阅读说明：本技术 用于无线通信的电子设备和方法、计算机可读存储介质 (Electronic device and method for wireless communication, computer-readable storage medium ) 是由 刘福良 王昭诚 曹建飞 于 2020-03-27 设计创作，主要内容包括：提供了用于无线通信的电子设备和方法、计算机可读存储介质。电子设备包括处理电路,该处理电路被配置为：生成干扰测量配置信息,所述干扰测量配置信息指示D2D接收机所在小区内与D2D接收机复用无线通信资源的待测设备要发送的参考信号的配置；以及向D2D接收机发送干扰测量配置信息；从D2D接收机接收干扰测量报告,所述干扰测量报告是根据干扰测量配置信息测量待测设备所发送的参考信号在D2D接收机处的接收信号以作为对D2D接收机的干扰而获得的。根据本公开的实施例,针对D2D设备复用蜂窝网络资源的情况,能够测量D2D接收机所受到的干扰,由此提供了通过调度或功率控制降低该干扰的可能性。(Electronic devices and methods, computer-readable storage media, are provided for wireless communication. The electronic device includes processing circuitry configured to: generating interference measurement configuration information indicating a configuration of a reference signal to be transmitted by a device under test in which a D2D receiver is located and the D2D receiver multiplexes wireless communication resources; and sending interference measurement configuration information to the D2D receiver; and receiving an interference measurement report from the D2D receiver, wherein the interference measurement report is obtained by measuring a received signal of a reference signal transmitted by the device under test at the D2D receiver according to the interference measurement configuration information to serve as interference to the D2D receiver. According to embodiments of the present disclosure, the interference experienced by the D2D receiver can be measured for the case where the D2D device multiplexes cellular network resources, thereby providing the possibility to reduce this interference through scheduling or power control.)

1. An electronic device, comprising:

a processing circuit configured to:

generating interference measurement configuration information indicating a configuration of a reference signal to be transmitted by a device under test in which a D2D receiver is located and the D2D receiver multiplexes wireless communication resources; and

sending interference measurement configuration information to a D2D receiver;

and receiving an interference measurement report from the D2D receiver, wherein the interference measurement report is obtained by measuring a received signal of a reference signal transmitted by the device under test at the D2D receiver according to the interference measurement configuration information to serve as interference to the D2D receiver.

2. The electronic device of claim 1, wherein the wireless communication resources that the D2D receiver multiplexes with the device under test include upstream communication resources.

3. The electronic device of claim 2, wherein the device under test comprises an uplink cellular user equipment.

4. The electronic device of claim 3, wherein the device under test further comprises a D2D transmitter other than the D2D transmitter corresponding to the current D2D receiver.

5. The electronic device of any one of claims 1-4, wherein the D2D receiver and the device under test each communicate using a particular beam.

6. The electronic device of any of claims 1-4, wherein the processing circuitry is further configured to: and pre-configuring the reference signal for each device to be tested in the cell.

7. The electronic device of claim 1, wherein the processing circuit is further configured to: the reference signals of at least a portion of the devices under test within a cell are preconfigured to occupy contiguous or concentrated time and frequency resources.

8. The electronic device of claim 7, wherein the reference signal comprises a sounding reference signal.

9. The electronic device of claim 7, wherein the interference measurement configuration information comprises:

specific measurement configuration information for indicating time and frequency resources of the reference signal of an expected high-interference device under test; and

and overall measurement configuration information used for indicating the union set of time and frequency resources of the reference signals of all the devices to be tested.

10. The electronic device of claim 9, wherein the specific configuration information further indicates sequence information of the reference signal of an expected high interference device under test.

Technical Field

The present application relates to the field of wireless communication technologies, and more particularly, to an electronic device and method for wireless communication, a non-transitory computer-readable storage medium, capable of measuring interference suffered by a D2D receiver in a scenario where a D2D device multiplexes wireless communication resources.

Background

Device-to-Device (D2D) communication is considered one of the key technologies of 5G wireless communication systems due to its huge application prospects and potential performance gains. Resource reuse between the D2D link and the cellular user link may improve the spectral efficiency of the system. In the related art, one method for multiplexing cellular network resources by D2D devices is to multiplex the same transmission resources by D2D devices and cellular user equipment, so as to improve resource utilization. However, such multiplexing may introduce inter-link interference, which may affect system performance. Therefore, it is desirable to be able to effectively measure the inter-link interference.

Disclosure of Invention

The following presents a simplified summary of the disclosure in order to provide a basic understanding of some aspects of the disclosure. However, it should be understood that this summary is not an exhaustive overview of the disclosure. It is not intended to identify key or critical elements of the disclosure or to delineate the scope of the disclosure. Its sole purpose is to present some concepts of the disclosure in a simplified form as a prelude to the more detailed description that is presented later.

In view of the above, it is an object of at least one aspect of the present disclosure to provide an electronic device and method, a non-transitory computer-readable storage medium for wireless communication, which enables measuring interference experienced by a D2D receiver for a case where a D2D device multiplexes cellular network resources.

According to an aspect of the disclosure, there is provided an electronic device comprising processing circuitry configured to: generating interference measurement configuration information indicating a configuration of a reference signal to be transmitted by a device under test in which a D2D receiver is located and the D2D receiver multiplexes wireless communication resources; sending interference measurement configuration information to a D2D receiver; and receiving an interference measurement report from the D2D receiver, the interference measurement report being obtained by measuring a received signal of a reference signal transmitted by the device under test at the D2D receiver as interference to the D2D receiver according to the interference measurement configuration information.

According to another aspect of the present disclosure, there is also provided an electronic device comprising processing circuitry configured to: receiving interference measurement configuration information from a base station, wherein the interference measurement configuration information indicates the configuration of a reference signal to be transmitted by a device to be tested in a cell in which a D2D receiver is located and which multiplexes wireless communication resources with the D2D receiver; according to the received interference measurement configuration information, measuring a received signal of a reference signal sent by the device to be measured at the D2D receiver as interference to the D2D receiver to obtain an interference measurement report; and sending an interference measurement report to the base station.

According to yet another aspect of the present disclosure, there is also provided a method for wireless communication, the method comprising: generating interference measurement configuration information indicating a configuration of a reference signal to be transmitted by a device under test in which a D2D receiver is located and the D2D receiver multiplexes wireless communication resources; sending interference measurement configuration information to a D2D receiver; and receiving an interference measurement report from the D2D receiver, the interference measurement report being obtained by measuring a received signal of a reference signal transmitted by the device under test at the D2D receiver as interference to the D2D receiver according to the interference measurement configuration information.

According to yet another aspect of the present disclosure, there is also provided a method for wireless communication, the method comprising: receiving interference measurement configuration information from a base station, wherein the interference measurement configuration information indicates the configuration of a reference signal to be transmitted by a device to be tested in a cell in which a D2D receiver is located and which multiplexes wireless communication resources with the D2D receiver; according to the received interference measurement configuration information, measuring a received signal of a reference signal sent by the device to be measured at the D2D receiver as interference to the D2D receiver to obtain an interference measurement report; and sending an interference measurement report to the base station.

According to another aspect of the present disclosure, there is also provided a non-transitory computer readable storage medium storing executable instructions that, when executed by a processor, cause the processor to perform the respective functions of the above-described method for wireless communication or electronic device.

According to other aspects of the present disclosure, there is also provided computer program code and a computer program product for implementing the above-described method according to the present disclosure.

According to at least one aspect of embodiments of the present disclosure, for the case where the D2D device multiplexes cellular network resources, the interference experienced by the D2D receiver can be measured, thereby providing the possibility of reducing the interference experienced by the D2D receiver through scheduling or power control.

Additional aspects of the disclosed embodiments are set forth in the description section that follows, wherein the detailed description is presented to fully disclose the preferred embodiments of the disclosed embodiments without imposing limitations thereon.

Drawings

The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure. In the drawings:

fig. 1 illustrates a schematic diagram of interference in an example scenario where D2D communications multiplex uplink communications resources;

fig. 2 is a block diagram showing a first configuration example of an electronic device on the base station side according to an embodiment of the present disclosure;

fig. 3 is a block diagram showing a second configuration example of an electronic device on the base station side according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram illustrating an example of a reference signal pre-configured for a device under test by a configuration unit in the electronic device of FIG. 3;

fig. 5 is a block diagram showing a third configuration example of an electronic device on the base station side according to an embodiment of the present disclosure;

FIG. 6 is a diagram illustrating interference in an example scenario suitable for application of the electronic device shown in FIG. 5;

FIG. 7 is a diagram illustrating an example of a determining unit in the electronic device shown in FIG. 5 determining an expected high interference device under test;

fig. 8 is a schematic diagram illustrating the signaling overhead of an interference measurement configuration generated by the generation unit in the electronic device shown in fig. 5;

fig. 9 is a block diagram showing a fourth configuration example of an electronic device on the base station side according to an embodiment of the present disclosure;

fig. 10 is a block diagram showing one configuration example of an electronic device on the D2D receiver side according to an embodiment of the present disclosure;

FIG. 11 is a flow chart illustrating a first example of an information interaction process according to an embodiment of the present disclosure;

FIG. 12 is a flow chart illustrating a second example of an information interaction process according to an embodiment of the present disclosure;

FIG. 13 is a flow chart illustrating a third example of an information interaction process according to an embodiment of the present disclosure;

FIG. 14 is a flow chart illustrating a fourth example of an information interaction process according to an embodiment of the present disclosure;

FIG. 15 is a flow chart illustrating a fifth example of an information interaction process according to an embodiment of the present disclosure;

fig. 16 is a flowchart showing an example of a procedure for a wireless communication method on the base station side according to an embodiment of the present disclosure;

fig. 17 is a flowchart illustrating a process example for a wireless communication method at the D2D receiver side according to an embodiment of the present disclosure;

fig. 18 is a block diagram illustrating a first example of a schematic configuration of an eNB to which the techniques of this disclosure may be applied;

fig. 19 is a block diagram illustrating a second example of a schematic configuration of an eNB to which the techniques of this disclosure may be applied;

fig. 20 is a block diagram showing an example of a schematic configuration of a smartphone to which the technique of the present disclosure may be applied;

fig. 21 is a block diagram showing an example of a schematic configuration of a car navigation device to which the technique of the present disclosure can be applied.

While the disclosure is susceptible to various modifications and alternative forms, specific embodiments thereof have been shown by way of example in the drawings and are herein described in detail. It should be understood, however, that the description herein of specific embodiments is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the disclosure. It is noted that throughout the several views, corresponding reference numerals indicate corresponding parts.

Detailed Description

Examples of the present disclosure will now be described more fully with reference to the accompanying drawings. The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses.

Example embodiments are provided so that this disclosure will be thorough, and will fully convey the scope to those skilled in the art. Numerous specific details are set forth such as examples of specific components, devices, and methods to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms, and that neither should be construed to limit the scope of the disclosure. In certain example embodiments, well-known processes, well-known structures, and well-known technologies are not described in detail.

The description will be made in the following order:

1. a description of the problem;

2. a configuration example of an electronic device on the base station side;

configuration examples of electronic devices on the D2D receiver side;

4. examples of information interaction processes;

5. a method embodiment;

6. application examples.

<1. description of the problems >

Multiplexing the cellular network resources for D2D communication may improve the efficiency of resource utilization. In particular, having the D2D device reuse the same wireless communication resources as the cellular user equipment is an efficient way to further improve resource utilization. However, such multiplexing may introduce inter-link interference, which may affect system performance.

More specifically, on the one hand, when the D2D communication multiplexes downlink communication resources, the D2D transmitter may cause interference to downlink cellular user equipment, and the D2D receiver may also be interfered by downlink transmission of the base station; on the other hand, when the D2D communication multiplexes uplink communication resources, the D2D transmitter may cause interference to the uplink transmissions of the cellular users at the base station, and the D2D receiver may also be subject to interference by the uplink cellular users. As an example, reference may be made to fig. 1, which illustrates an interference scenario when D2D communications multiplex uplink communications resources, where interference is indicated by dashed lines with arrows.

Therefore, in order to reduce the interference received by the D2D receiver by various means such as scheduling and power control, it is desirable to be able to measure the interference received by the D2D receiver when the D2D device multiplexes wireless communication resources.

The present disclosure proposes an electronic device on the base station side, an electronic device on the D2D receiver side, a method for wireless communication, and a computer-readable storage medium for such a scenario that enables the electronic device on the D2D receiver side to measure the interference experienced by the D2D receiver according to interference measurement configuration information from the electronic device on the base station side, thereby providing a possibility of reducing the interference experienced by the D2D receiver through scheduling, power control, or the like.

The electronic device on the base station side according to the present disclosure may be a base station device itself, for example, an eNB (evolved node B) or a gNB. In addition, the electronic device on the base station side according to the present disclosure may also include an electronic device on the network side other than the base station device, which may be theoretically any type of TRP (Transmit and Receive Port). The TRP may have a transmitting and receiving function, and may receive information from or transmit information to, for example, a user equipment and a base station apparatus. In one example, the TRP may provide a service to the user equipment and be controlled by the base station equipment. That is, the base station apparatus provides a service to the user equipment through the TRP. In some specific embodiments or examples below, a description is made directly with a base station apparatus as an example of an electronic apparatus on a base station side, but the present disclosure is not limited thereto, and may be suitably applied to the case of the above-described electronic apparatus on a network side.

The electronic device on the D2D receiver side according to the present disclosure may be various user devices operating in the D2D mode, for example, a mobile terminal such as a smartphone, a tablet Personal Computer (PC), a notebook PC, a portable game terminal, a portable/cryptographic dog-type mobile router, and a digital camera, or an in-vehicle terminal such as a car navigation device. The user equipment described above may also be implemented as a terminal (also referred to as a Machine Type Communication (MTC) terminal) that performs machine-to-machine (M2M) communication. Further, the user equipment may be a wireless communication module (such as an integrated circuit module including a single chip) mounted on each of the above-described terminals.

<2. example of configuration of electronic device on base station side >

[2.1 first configuration example of electronic device on base station side ]

Fig. 2 is a block diagram showing a first configuration example of an electronic device on the base station side according to an embodiment of the present disclosure.

As shown in fig. 2, the electronic device 200 may include a generation unit 210 and a communication unit 220.

Here, each unit of the electronic device 200 may be included in the processing circuit. The electronic device 200 may include one processing circuit or may include a plurality of processing circuits. Further, the processing circuitry may include various discrete functional units to perform various different functions and/or operations. It should be noted that these functional units may be physical entities or logical entities, and that units called differently may be implemented by the same physical entity.

According to an embodiment of the present disclosure, the generation unit 210 may generate interference measurement configuration information to be transmitted to the D2D receiver, the interference measurement configuration information indicating a configuration of a reference signal to be transmitted by a device under test that multiplexes wireless communication resources with the D2D receiver within a cell in which the D2D receiver is located. Here, the cell in which the D2D receiver is located may be a service range of a base station corresponding to the electronic device 200, for example, the D2D receiver may be geographically located within a coverage range of the base station, or be close to the base station. When the electronic apparatus 200 itself is a base station apparatus, "a base station corresponding to the electronic apparatus 200" means a base station apparatus of the electronic apparatus 200 itself. Further, in the case where the electronic apparatus 200 communicates with a base station apparatus and realizes a part of the functions of the base station apparatus, "a base station corresponding to the electronic apparatus 200" means the base station apparatus.

Further, there may be multiple pairs of D2D transmitters and D2D receivers performing D2D communication in the cell where the D2D receiver is located, so that the generating unit 210 sequentially sends interference measurement configuration information to the multiple D2D receivers, for example, in a certain time sequence, so that each D2D receiver sequentially performs interference measurement according to the received interference measurement configuration information. Here and in the following, the processing for one of the D2D receivers will be mainly described, and those skilled in the art will understand that the overall processing for a plurality of D2D receivers can be realized by repeatedly performing such processing.

According to an embodiment of the present disclosure, the communication unit 220 may transmit the interference measurement configuration information generated by the generation unit 210 to the D2D receiver, and receive an interference measurement report from the D2D receiver, the interference measurement report being obtained by measuring a received signal of a reference signal transmitted by a device under test at the D2D receiver as interference to the D2D receiver according to the interference measurement configuration information. That is, the D2D receiver can measure the received signal of the reference signal transmitted by the device under test at the D2D receiver as interference to the D2D receiver according to the interference measurement configuration information, thereby obtaining an interference measurement report and transmitting the report to the electronic device 200.

It can be seen that according to the electronic device 200 on the base station side of the embodiment of the present disclosure, the electronic device on the D2D receiver side can be provided with the interference measurement configuration information, so that the electronic device on the D2D receiver side can measure the interference suffered by the D2D receiver according to the interference measurement configuration information, thereby providing a possibility of reducing the interference suffered by the D2D receiver through scheduling or power control.

Preferably, the wireless communication resources multiplexed by the D2D receiver and the device under test include uplink communication resources. Benefits of preferring the uplink communication resources include that the utilization of the uplink communication resources is lower than the utilization of the downlink communication resources, and that the multiplexing of the uplink communication resources by the D2D device does not cause interference to existing downlink cellular users. In addition, the interference of the multiplexing to the base station can be measured and eliminated by the base station.

In the case where the D2D communication multiplexes uplink communication resources, a device under test (i.e., a device that may cause interference to the D2D receiver) in the cell in which the D2D receiver is located that multiplexes wireless communication resources with the D2D receiver may include an uplink cellular user equipment. In addition, when more than one pair of D2D devices exist in the cell where the D2D receiver is located, the device under test in which the D2D receiver and the D2D receiver reuse wireless communication resources in the cell may further include a D2D transmitter (hereinafter, may also be simply referred to as "other D2D transmitter") in addition to the D2D transmitter corresponding to the current D2D receiver. Hereinafter, when there is no need to particularly distinguish between the cellular user equipment and other D2D transmitters in the device under test, both will be collectively referred to as the device under test.

The electronic device 200 according to the embodiment of the present disclosure may be applied to a scenario where beamforming is used on both the network side (e.g., a base station) and the user equipment side (e.g., a cellular user equipment and a D2D device) of a millimeter wave cellular network, for example. Thus, optionally, in embodiments of the present disclosure, the D2D receiver and the device under test may each communicate using a particular beam (i.e., a directional beam rather than an omni-directional beam).

[2.2 second configuration example of electronic device on base station side ]

Fig. 3 is a block diagram showing a second configuration example of an electronic device on the base station side according to an embodiment of the present disclosure. The third configuration example shown in fig. 3 is a further modified example on the basis of the first configuration example shown in fig. 2, and therefore, the following description will be made on the basis of the above first configuration example shown in fig. 2.

As shown in fig. 3, the electronic device 300 may include a generation unit 310 and a communication unit 320, which are similar to the generation unit 210 and the communication unit 220, respectively, in the electronic device 200 shown in fig. 2. In addition, the electronic device 300 further includes a configuration unit 310, configured to pre-configure a reference signal to be transmitted for each device under test in the cell.

As an example, when the device to be tested is a cellular user equipment of a cell in which the D2D receiver is located, the reference signal pre-configured by the configuration unit 310 may be an uplink reference signal used in the communication process between the cellular user equipment itself and the base station. In other words, the reference signal to be transmitted by the cellular user equipment for interference measurement by the D2D receiver is not configured by the electronic device 300 on the base station side exclusively for interference measurement by the D2D receiver, but borrows a pre-configured uplink reference signal used by the cellular user equipment as a device under test in communication with the base station.

On the other hand, when the device under test is the other D2D transmitter of the cell in which the D2D receiver is located, the reference signal configured for it by the configuration unit 310 may be the same type of reference signal as the reference signal pre-configured for the cellular user equipment.

Preferably, the configuration unit 310 may pre-configure the reference signals of at least a part, even all, of the devices under test within the cell to occupy continuous or concentrated time and frequency resources. Herein, occupying "contiguous or concentrated" time/frequency resources may for example mean that the occupied time/frequency resources are contiguous or concentrated within a certain time/frequency range. When the reference signal thus configured is used, signaling overhead for interference measurement configuration information can be reduced in an appropriate scenario. For example, as a simplified processing manner, if only the overall interference of each device under test to the D2D receiver is desired to be considered, in the case that a plurality of reference signals occupying continuous or concentrated time and frequency resources are configured in advance for these devices under test, the interference measurement configuration information generated by the generation unit 310 of the electronic device 300 may indicate only the union set of time and frequency resources of the reference signals of all the devices under test, and such interference measurement configuration information is transmitted by the communication unit 320, which is sufficient for the D2D receiver to measure the overall interference.

As an example, the reference signals occupying continuous or concentrated time and frequency resources pre-configured by the configuration unit 310 for each device under test in the cell may include Sounding Reference Signals (SRS). The sounding reference signal takes the form of a ZC (Zadoff-Chu) sequence with constant modulus characteristics and good autocorrelation characteristics, and the definition of such a ZC sequence depends on the sequence length (usually a prime number), root index, and cyclic shift. The two ZC sequences with different cyclic shifts are quasi-orthogonal such that two users configuring different cyclic shift ZC sequences are distinguishable at the receiver.

For an SRS reference signal in the form of, for example, a ZC sequence, which may be used for interference measurement, the configuration thereof is mainly divided into three aspects, time resources, frequency resources, and sequences. According to the specification of 3GPP TS 38.211, the configuration of the time resource may include a slot number and an OFDM symbol number occupied by the SRS. The periodic or aperiodic SRS can start with an OFDM symbol numbered 8-13 and last for 1, 2, or 4 consecutive symbols. The configuration of the frequency resource includes a frequency domain starting position, a comb number (comb number) and a specific comb offset (comb offset) which determine the subcarrier spacing, and the number of resource blocks occupied by the frequency domain. The configuration of the sequence includes root indexes and cyclic shifts of the ZC sequence, wherein a short sequence supports 30 root indexes, a long sequence supports 60 root indexes, and supports 8 or 12 cyclic shifts according to different numbers of combs.

Fig. 4 is a schematic diagram illustrating an example of a reference signal pre-configured for a device under test by the configuration unit 310 in the electronic device 300 of fig. 3. Fig. 4 shows an example of the SRS reference signals of the above form pre-configured by the configuration unit 330 for the multiple devices under test 1 to 8 in the cell, and more specifically shows time and frequency resources in one resource block occupied by the SRS reference signals of the devices under test 1 to 8. In this example, the device under test 1 and the device under test 2 are regarded as a group, and the SRS reference signals of the two devices under test occupy the same time and frequency resources: the time domain starting position is an OFDM symbol with the number of 12, the number of the continuous OFDM symbols is 1, the frequency domain starting position is a subcarrier with the number of 0, the number of the teeth combs is equal to 2, and the offset of the teeth combs is 0. Note that the configuration unit 310 sets the root index and the cyclic shift of the ZC sequence of the SRS reference signal of each of the device under test 1 and the device under test 2 to be different from each other so that the SRS reference signals of the two devices still have different sequence configurations and are thus distinguishable at the receiver. Similarly, the device under test 3 and the device under test 4, the device under test 5 and the device under test 6, and the device under test 7 and the device under test 8 are grouped in pairs, and the configuration unit 310 configures SRS reference signals of the two devices under test in each group to occupy the same time and frequency resources, but use different ZC sequences.

As shown in fig. 4, the SRS reference signals of the devices to be tested 1 to 8 continuously or intensively occupy time and frequency resources with a time domain start position of 12, a continuous OFDM symbol number of 2, a frequency domain start position of 0, and a resource block number of 1, where the time and frequency resources are a union of the time and frequency resources occupied by the reference signals of the devices to be tested 1 to 8. Under such a configuration, the interference measurement configuration information generated by the generation unit 310 of the electronic device 300 and transmitted by the communication unit 320 may indicate only the above-mentioned union of time and frequency resources of the reference signals of the devices under test 1 to 8, which is sufficient for the D2D receiver to measure the overall interference of the devices under test 1 to 8. As an example, the devices under test 1 to 8 may all be cellular user equipment, or may be partially cellular user equipment, and partially other D2D transmitters, which are determined according to a scenario in which the electronic device 300 according to the embodiment of the present disclosure is applied, and are not described herein again.

The ideal case that the reference signals of each device under test in the cell are pre-configured to occupy continuous or concentrated time and frequency resources is described above with reference to fig. 4, taking SRS reference signals as an example. The above configuration is preferably performed for all devices under test in the cell. However, in practice there is the following possibility: the configuration unit 310 can only pre-configure reference signals occupying continuous or concentrated time and frequency resources for a part of devices under test (e.g. all or part of cellular user equipment) within a cell, and pre-configure reference signals occupying other time and frequency resources for other devices under test (e.g. a D2D transmitter that may cause interference) within the cell. It should be appreciated that this possibility can still reduce the signaling overhead for interference measurement configuration information to some extent in appropriate scenarios. In addition, the configuration unit 310 may also configure other reference signals besides the SRS reference signal for the device under test, which will be described in further detail in the following embodiments.

The second configuration example of the electronic device on the base station side of the embodiment of the present disclosure is described above. As described above, in the second configuration example, the configuration unit of the electronic device configures the reference signal to be transmitted by the device under test to occupy continuous or concentrated time and frequency resources as much as possible, so that the generation unit can generate the interference measurement configuration information indicating only the union set of the above time and frequency resources under an appropriate scenario, thereby being capable of reducing the signaling overhead of the communication unit transmitting such interference measurement configuration information.

[2.3 third configuration example of electronic device on base station side ]

Fig. 5 shows a block diagram of a third configuration example of the electronic device on the base station side. The third configuration example shown in fig. 5 is a further modified example on the basis of the second configuration example shown in fig. 3, and therefore, the following description will be made on the basis of the second configuration example shown in fig. 3 above.

As shown in fig. 5, the electronic device 500 may comprise a generating unit 510, a communication unit 520, a configuration unit 530, which are similar to the units 310 to 330, respectively, of the electronic device 300 shown in fig. 3. Furthermore, the electronic device 500 further comprises a determining unit 540 for determining an expected high interference device under test based on the position information of the D2D receiver and the position information of the devices under test within the cell.

The electronic device 500 of the present embodiment is particularly suitable for the following scenarios: for the D2D receiver in the service range of the electronic device, the interference from one part of the devices under test is larger and the interference from another part of the devices under test is smaller due to relative position relationship and the like. Accordingly, the generation unit 510 of the electronic device 500 may generate interference measurement configuration information with an appropriate degree of detail as will be described further later, according to the expected high interference device determined in this way, thereby reducing signaling overhead when the communication unit 520 transmits the information.

Examples of such scenarios in which the electronic device 500 of the present embodiment is suitable for use include situations in which these devices operate in a millimeter wave cellular network. The interference situation in the mmwave cellular network is very different from that in the LTE network. In an LTE network, the use of omni-directional antennas by user equipment results in interference having a random nature, i.e., there may be interference between any two links. In the mm-wave cellular network, due to the high link loss in the mm-wave frequency band, the user equipment generally uses multiple antennas to form a specific directional beam to increase the received signal power. Thus, the interference has a sparse nature and exists only between a few links.

Fig. 6 is a diagram illustrating interference in an example scenario suitable for application of the electronic device 500 shown in fig. 5. Fig. 6 shows an example scenario of sparse interference in a mmwave cellular network, where beams at various devices, base station BS, device under test UE, D2D transmitter D2D Tx, and D2D receiver D2D Rx, etc., are represented in a sector and interference is indicated by dashed lines with arrows. As shown in fig. 6, the D2D receiver D2D Rx receives interference from only one device under test, i.e., the UE shown on the right side of the figure (i.e., only the UE shown on the right side of the figure). Therefore, when the electronic device of the present embodiment is applied to such a scenario, for other devices under test except for the high-interference devices under test involving such a few links, the D2D receiver may not need its specific interference measurement configuration information to perform interference measurement for each device under test. Note that although some of the contents of the present preferred embodiment and subsequent embodiments are described below in conjunction with a millimeter wave cellular network, it will be understood by those skilled in the art that the contents of the related embodiments may be equally applied to a case of multiplexing other wireless communication resources as appropriate.

As an example, the respective location information of the D2D receiver and the device under test, on which the determination unit 540 is based when making the determination of the expected high-interference device under test, may respectively indicate their respective locations, such that the determination unit 540 may e.g. indicate thatAnd determining the distance between the D2D receiver and the device to be tested according to the position information of the two receivers. Accordingly, the determining unit 540 may, for example, determine that the distance between the D2D receiver and the device under test is smaller than a predetermined threshold D_thThe device under test is determined to be an expected high interference device under test. The above-described distance-based determination criterion is also referred to hereinafter simply as the first distance-based criterion.

As another example, in addition to the D2D receiver and the location information of the device under test, additional information may be obtained to otherwise determine an expected high interference device under test.

For example, in the case of a millimeter wave cellular network such as that described above, i.e., in the case where the D2D receiver and the device under test each use a specific beam (directional beam instead of omnidirectional beam) for communication, the determination unit 540 may determine the device under test as an expected high-interference device under test in the case where the transmission beam of the device under test covers the position of the D2D receiver and/or the reception beam of the D2D receiver covers the position of the device under test. Hereinafter, the above-mentioned "the transmission beam of the device under test covers the position of the D2D receiver" and the standard of the device under test expected to have high interference is simply referred to as the second standard based on beam coverage, and the "the reception beam of the D2D receiver covers the position of the device under test" and the standard of the device under test expected to have high interference is simply referred to as the third standard based on beam coverage.

Next, specific determination examples of the above-described first to third criteria will be described with reference to fig. 7. Fig. 7 is a schematic diagram illustrating an example of determining the unit to determine the expected high interference device under test in the electronic device shown in fig. 5. In fig. 7, an example scenario is shown in which the D2D receiver and the device under test each communicate using a specific beam, and the determination unit 540 determines the expected high-interference device under test based on the first to third criteria described above. More specifically, in the example of fig. 7, a pair of D2D devices, i.e. a D2D transmitter D2D Tx and a D2D receiver D2D Rx, within the coverage of the base station BS is shown; for simplicity, only two cellular user equipments UE1 and UE2 are exemplarily shown as examples of the device under test. Note that although two cellular user equipments UE1 and UE2 are taken as examples of devices under test here, the present example may be suitably applied to a case where the devices under test also include more cellular user equipments and/or other D2D transmitters.

The determination unit 540 may make the determination of the first criterion based on distance for the example scenario of fig. 7. For example, the determining unit 540 may first determine the distance between each of the UE1 and UE2 and D2D Rx, and determine whether the distance is less than a predetermined distance threshold D_th. In this example, the distance between the UE1 and D2D Rx is less than the distance threshold D_thThe distance between the UE2 and D2D Rx is greater than or equal to a distance threshold D_thTherefore, the determining unit 540 determines that the UE1 satisfies the first criterion but the UE2 does not.

The determining unit 540 may also make a determination based on the second criterion of beam coverage, i.e. determine whether the transmit beams of the cellular user equipments UE1 and UE2 cover the location of D2D Rx. As a specific example of the second standard, the determining unit 540 may calculate a first angle with the cellular user equipment as a vertex, which is composed of the position of D2D Rx, the position of the cellular user equipment (UE1 or UE2), and the position of the base station BS, and determine the position where the transmission beam of the cellular user equipment covers D2D Rx when the first angle is smaller than the width of the transmission beam of the cellular user equipment. The first angle defined in the above manner has the property of pointing from the cellular user equipment towards the base station BS and towards D2D Rx according to its definition; further, when the base station and the cellular user equipment communicate with each other by using the beamforming technique, the transmission beam of the cellular user equipment is considered to have a characteristic of being directed to the base station BS. Therefore, with the above-described first angle and such directivity characteristics of the transmission beam of the cellular user equipment, it is possible to determine whether D2D Rx is covered by the transmission beam of the cellular user equipment simply by determining whether the first angle is smaller than the width of the transmission beam of the cellular user equipment without additionally precisely determining the direction of the transmission beam of the cellular user equipment.

For example, the determining unit 540 may calculate a first angle (i.e., the angle θ in fig. 7) formed by the D2D Rx, the cellular user equipment UE1 and the base station BS with the UE1 as a vertex based on the D2D Rx and the location information of the cellular user equipment UE1 and the location of the base station BS (which may be known from the base station BS), and determine that the first angle is smaller than the width of the transmission beam of the UE1 (the width of the transmission beam may be known from the base station BS, for example), so as to determine the location where the transmission beam of the UE1 covers the D2D Rx. The determining unit 540 may calculate a first angle (i.e., an angle formed by D2D Rx, UE2 and BS) with the UE2 as a vertex in a similar manner for the cellular user equipment UE2, and judge that the first angle is larger than the width of the transmission beam of the UE 2. In this way, in the present example, the determining unit 540 determines that the UE1 satisfies the second criterion but that the UE2 does not.

The determining unit 540 may also make a determination based on a third criterion of beam coverage, i.e. determine whether the reception beam of D2D Rx covers the locations of cellular user equipments UE1 and UE 2. As a specific example of the third criterion, the determining unit 540 may calculate a second angle having D2D Rx as a vertex, which is composed of the location of the cellular user equipment (UE1 or UE2), the location of D2D Rx, and the location of D2D Tx, and determine that the reception beam of D2D Rx covers the location of the cellular user equipment when the second angle is smaller than the width of the reception beam of D2D Rx. The second angle defined in the above manner has the characteristics of pointing from D2D Rx to cellular user equipment and pointing to D2D Tx according to its definition; further, when communication is performed between D2D Rx and D2D Tx using beams, it is considered that the reception beam of D2D Rx has a characteristic of being directed to D2D Tx. Therefore, with the above-mentioned second angle and such directivity characteristics of the reception beam of D2D Rx, it is possible to determine whether the cellular user equipment is covered by the reception beam of D2D Rx simply by determining whether the second angle is smaller than the width of the reception beam of D2D Rx, without additionally precisely determining the direction of the reception beam of D2D Rx.

As an example, the determining unit 540 may calculate a second angle (not labeled in the figure) formed by the UE1, D2D Rx and D2D Tx and having the D2D Rx as a vertex, based on the location information of the cellular user equipment UE1, D2D Rx and D2D Tx, and judge that the second angle is smaller than the width of the receiving beam of the D2D Rx (the width of the receiving beam of the D2D Rx may be known from the base station BS, for example). Similarly, the determining unit 540 may calculate a second angle (consisting of UE2, D2D Rx and D2D Tx) with D2D Rx as a vertex in a similar manner for the cellular user equipment UE2 and determine the width of the receive beam for which the second angle is greater than D2D Rx. In this way, in the present example, the determining unit 540 determines that the UE1 satisfies the third criterion but that the UE2 does not.

After obtaining the determination results of the first to third criteria, the determining unit 540 may determine the device under test satisfying one or more of the criteria as an expected high-interference device under test. For example, the determination unit 540 may employ a relatively strict final criterion or may employ a relatively loose criterion. As an example of a relatively strict final criterion, it may be considered that a device under test that has to satisfy both the first and second criterion, both the first and third criterion, or even both the first to third criterion, is a high-interference device under test. In the example scenario of fig. 7, under these strict criteria, the determining unit 540 only determines the UE1 as a high interference device under test. Alternatively, the determination unit 540 may employ a relatively loose final criterion. For example, a device under test that meets any one of the first to third standards may be determined as a high-interference device under test. As another example, the determining unit 540 may also employ a larger distance threshold D 'in the first distance-based criterion'_thSo that, except for the UE1, the distance to D2D Tx is slightly greater but still less than the distance threshold D'_thUE2 of (a) is also determined to be a high interference device under test.

In the example described above with reference to fig. 7, the determination unit 540 makes the determination of the first to third criteria based on the position information of the D2D receiver and the respective devices under test, and optionally the beam information (beam width) and the position information of the base station. Next, an example manner of obtaining the position information of the D2D receiver and each device under test by estimation will be briefly described.

By way of example only, in the exemplary case of a millimeter wave cellular network such as that shown in fig. 7, estimated positions of the respective devices may be obtained by estimation based on three-dimensional beamforming by the base station BS as position information. When the base station BS performs three-dimensional beamforming, a Uniform Rectangular Array (URA) is configured to provide beamforming in two spatial dimensions of azimuth and elevation simultaneously. In practice, base station antennas tend to be placed at higher locations, so it can be assumed that the location of individual user equipment, including D2D devices and cellular user equipment, can be determined by downlink three-dimensional beamforming at the base station. That is, the coverage area of the three-dimensional beam in which the user equipment is located may be determined based on the three-dimensional beam used by the base station, and the center position of the corresponding coverage area may be taken as the estimated position for the user equipment, for example. In the example shown in fig. 7, circles of different grey scale schematically indicate the estimated positions of the individual user equipments to indicate that each user equipment is in the coverage of a different three-dimensional beam of the base station BS (these beams are indicated in fig. 7 by sectors of different grey scale).

Note that the above case where the correlation information is obtained based on three-dimensional beamforming by the base station BS is merely one example. The determination unit 540 may obtain various information for making the judgment of the first to third criteria, such as the above-described information, in various ways, and the present disclosure is not limited in this respect.

After the determination unit 540 of the electronic device 500 determines the expected high-interference device under test by, for example, the above-mentioned manner, the generation unit 510 of the electronic device 500 may accordingly generate appropriate interference measurement configuration information with respect to the reference signal of each device under test in different degrees of detail according to the determination result of the determination unit 540, so as to reduce the signaling overhead of the communication unit 530 when subsequently transmitting the information. Here, the preferred configuration of the reference signals for the respective signals under test with the configuration unit in the second configuration example described above with reference to fig. 3 is followed, i.e. reference signals occupying continuous or concentrated time and frequency resources have been pre-configured in advance for at least a part, even all, of the devices under test (including the cellular user equipment and the D2D transmitter).

In a preferred embodiment, the interference measurement configuration information generated by the generation unit 510 may include: specific measurement configuration information for indicating time and frequency resources of the reference signal of an expected high-interference device under test; and overall measurement configuration information indicating a union of time and frequency resources of the reference signals of all devices under test. Optionally, the specific configuration information may also indicate sequence information of the reference signal of the expected high-interference device under test.

Referring back to the example of the specific configuration of the time and frequency resources of the SRS reference signal shown in fig. 4, further details of the interference measurement configuration information generated by the generating unit 510 in the preferred embodiment will be described in conjunction with the example. For the users 1 to 8 under test, which are configured with SRS reference signals occupying consecutive time and frequency resources in the example shown in fig. 4, it is assumed that only the device under test 1 is determined as the expected high-interference device under test through the determination process of the determination unit 540. Accordingly, a set K of all devices under test 1 to 8 may be grouped, wherein the first group K_AFor expected high interference devices under test, K in this example_AIncluding only the device under test 1, the second group K_B＝K-K_AFor devices under test other than the intended high interference device under test, K in this example_BSpecifically including devices under test 2-8.

In this case, the specific configuration information generated by the generation unit 510 may indicate the expected first group K_AAnd optionally may further indicate sequence information for each reference signal. In the case of the example of fig. 4, the specific configuration information generated by the generating unit 510 may indicate that the time domain starting position of the SRS reference signal of the device under test 1 is the OFDM symbol numbered 12, the number of the persistent OFDM symbols is 1, the frequency domain starting position is the subcarrier numbered 0, the number of the tooth combs is equal to 2, the offset of the tooth combs is 0, and the number of occupied resource blocks is 1. Optionally, the specific configuration information may also indicate a root index and a cyclic shift of the ZC sequence of the SRS reference signal of the device under test 1.

On the other hand, the overall configuration information generated by the generation unit 510 may indicate a union of time and frequency resources of reference signals of all the devices under test K. In the example of fig. 4, the union of time and frequency resources of SRS reference signals of all devices under test K, i.e. devices under test 1 to 8, is: the time domain starting position is an OFDM symbol with the number of 12, the number of the continuous OFDM symbols is 2, the frequency domain starting position is a subcarrier with the number of 0, and the number of resource blocks is 1. For except the expected high stemSet K of devices to be tested other than the device to be tested_BDoes not indicate its specific measurement configuration information individually, but covers the set K entirely with the above union set for all the devices under test K_BOf such a device under test.

When the communication unit 530 transmits the interference measurement configuration information including the specific measurement configuration information and the overall measurement configuration information generated in the above-described manner, it is possible to reduce signaling overhead for transmitting the interference measurement configuration information. Signalling overhead OH of all measurement configuration information under the assumption that specific measurement configuration information is sent for all devices under test₁M, where M is the total number of devices under test. In contrast, for the form of the interference measurement configuration information adopted in the preferred embodiment, the signaling overhead OH of all measurement configuration information₂1+ MP, where P is the ratio of expected high interference devices under test to total devices under test. Thus, the ratio of the two signaling overheads is OH₂/OH₁1/M + P. It can be seen that when M is large and P is small, the signaling overhead can be greatly reduced. Fig. 8 is a schematic diagram for explaining the signaling overhead of interference measurement configuration information generated by the generation unit in the third configuration example of the electronic device, in which the comparison of two types of signaling overhead calculated in the above manner with respect to the present exemplary scenario is shown, that is, in the case where M is 8 and P is 1/8, the signaling overhead of transmitting specific measurement configuration information of all devices under test is OH₁While the signaling overhead for generating the interference measurement configuration information comprising the specific measurement configuration information and the overall measurement configuration information in the manner of the preferred embodiment will be greatly reduced to 8

As described later in detail in a configuration example regarding the electronic device on the D2D receiver side, the electronic device on the D2D receiver side, after receiving the above-described interference measurement configuration information including the specific and overall measurement configuration information, may measure the interference of the high-interference device under test to the D2D receiver according to the received specific measurement configuration information, and measure the overall interference of all the devices under test to the D2D receiver according to the received overall measurement configuration information, thereby determining the interference received from (i.e., the interference received from) other devices under test than the expected high-interference device under test. The electronic device on the D2D receiver side may provide an interference measurement report based on the determined interference situation and send the interference measurement report to the electronic device 500 on the base station side.

In one example, the interference measurement report received by the communication unit 520 of the electronic device 500 may include at least: a first part to indicate whether the D2D receiver receives interference from an expected high interference device under test; and a second part to indicate whether the D2D receiver receives interference from devices under test other than the expected high interference device under test. Here (and in the context of this application), the expression that the D2D receiver "receives interference" from a device under test means that the D2D receiver experiences interference from the device under test. As an example, the interference measurement report received by the communication unit 520 may be in the form of a bit sequence, wherein the length of the first part is the expected number k of high interference devices under test_a(i.e., K)_ANumber of total interference devices under test), each bit indicating whether the D2D receiver receives interference from a corresponding expected high interference device under test, and the second portion having a length of 1 indicating whether interference is received from devices under test other than the expected high interference device under test. For example, for the present example, the interference measurement report it receives may be {1,0}, where a first bit of a 1 indicates that interference is received from only one expected high interference device under test 1, and a second bit of a 0 indicates that no interference is received from other devices under test 2 to 8 other than the expected high interference device under test.

Optionally, in a variant embodiment, when the second part of the interference measurement report received by the communication unit 520 of the electronic device 500 indicates that the D2D receiver has received interference from other devices under test than the expected high interference device under test (e.g. the example sequence above is {1,1 }), the determination unit 540 of the electronic device 500 may further determine the expected second highest interference device under test, except the expected high interference device under test. Here, the determining unit 540 may determine the next highest-interference device using a more relaxed standard than a strict standard used when the highest-interference device under test is first determined. For example, the determining unit 540 may consider that the device under test 1 which must satisfy both the first and second criteria described above, or both the first and third criteria, is the high-interference device under test when determining the expected high-interference device under test for the first time; when determining the second highest-interference device under test, for example, a device under test conforming to any one of the first to third standards, such as the device under test 2, other than the expected high-interference device under test may also be determined as the second highest-interference device under test.

For the next highest interference device under test determined by the determining unit 540, the generating unit 510 may send additional specific measurement configuration information to the D2D receiver, the additional specific measurement configuration information indicating a specific measurement configuration of a reference signal of an expected next highest interference device under test, except for the expected highest interference device under test. The details of the additional specific measurement configuration information may refer to the above description of the specific measurement configuration information, and are not described herein again.

Accordingly, after receiving the additional specific measurement configuration information, the electronic device on the receiver side of D2D may additionally measure the interference of the expected next highest interference device under test on the D2D receiver according to the received additional specific measurement configuration information, and generate and send an additional interference measurement report to the electronic device 500 on the base station side in combination with the interference situation that has been obtained before.

In one example, the communication unit 520 of the electronic device 500 may receive an additional interference measurement report from the D2D receiver, wherein the additional interference measurement report includes: a first part for indicating whether interference is received from an expected next highest interference device under test; and a second part for indicating whether interference is received from other devices under test than the expected high interference and next-high interference devices under test. As an example, additional interference measurement reports received by the communication unit 520 may be taken similarly to the interference measurement reportsIn the form of a bit sequence, wherein the length of the first part is the expected number k of devices under test with next highest interference_a2Each bit indicates whether the D2D receiver receives interference from a corresponding expected next highest interference device under test, and the second portion has a length of 1, which indicates whether interference is received from devices under test other than the expected highest interference and next highest interference devices under test.

As can be understood from the description of the present modified embodiment, if the determining unit 540 misses a device under test that actually causes interference when determining an expected high-interference device under test for the first time, it is necessary to repeat the determination of the expected second high-interference device under test, the transmission of additional specific measurement configuration information, and the reception of additional measurement reports in a manner similar to iteration. Therefore, in order to avoid missing the actual interference-causing device to be tested when the expected high-interference device to be tested is determined for the first time, a relatively loose standard can be adopted when the expected high-interference device to be tested is determined for the first time, for example, the device to be tested which meets any one of the first to third standards can be determined as the expected high-interference device to be tested; alternatively, a relatively large distance threshold may be used in the first distance-based criterion.

The above describes an example case where the measurement configuration information generated by the generation unit 510 includes specific measurement configuration information about high-interference devices under test and overall measurement configuration information about all devices under test. In this case, as discussed above, it is preferable that each device under test (including the cellular user equipment and the D2D transmitter) is pre-configured with a reference signal (e.g., the SRS reference signal described with reference to fig. 4) occupying continuous time and frequency resources, so that the signaling overhead of the measurement configuration information can be effectively reduced.

On the other hand, as described above, there is a possibility that in practical use: reference signals occupying continuous or concentrated time and frequency resources can only be preconfigured for a part of the devices under test within the cell, e.g. all cellular user equipment, while reference signals occupying other time and frequency resources can be preconfigured for other devices under test within the cell, e.g. a D2D transmitter, which may cause interference.

In this case, in a variant embodiment, the determining unit 540 may optionally first determine the D2D transmitters in all devices under test. It is to be understood that the determining unit 540 may confirm the D2D transmitter in the device under test based on the knowledge of the electronic device 500 at the base station side about the respective cellular user equipment and D2D devices within the coverage of the base station, and the present disclosure does not limit the specific manner thereof.

In this variant embodiment, the interference measurement configuration information generated by the generating unit 510 and transmitted by the communication unit may include, for example: D2D measurement configuration information indicating time and frequency resources of a reference signal of a D2D transmitter in a device under test; and overall measurement configuration information for indicating a union of time and frequency resources of reference signals of all cellular user equipments in the device under test. At this time, the D2D measurement configuration information is similar to the specific measurement configuration information described above for the high interference device under test, except that it corresponds to the D2D transmitter in the device under test rather than the high interference device under test. In addition, the overall measurement configuration information in this embodiment is also similar to the overall measurement configuration information described above, and the only difference is that the overall measurement configuration information in this embodiment corresponds to all cellular user equipment in the devices under test, not all devices under test. After understanding these differences, those skilled in the art can appropriately apply various aspects of the above-described embodiments to the present embodiment, and thus, detailed description thereof is omitted here.

In an example application of this variant embodiment, the reference signal of the D2D transmitter in the device under test may include a channel state information reference signal (CSI-RS) or a demodulation reference signal (DM-RS), and the reference signal of the cellular user equipment in the device under test includes a sounding reference signal. In other words, the configuration unit 530 may pre-configure SRS reference signals occupying continuous or concentrated time and frequency resources for all cellular user equipments among the devices to be tested, while pre-configuring CSI-RS or DM-RS that it can adopt as reference signals it adopts for the D2D transmitter.

Optionally, in this modified embodiment, a high-interference device under test in the cellular user equipment under test may also be considered. That is, in the present variant embodiment, optionally, the determining unit 540 may further determine an expected high-interference cellular user equipment among the devices under test. Accordingly, the interference measurement configuration information generated by the generating unit 510 and transmitted by the communication unit 520 may further include: specific measurement configuration information for indicating time and frequency resources of a reference signal of an intended high interference cellular user equipment. This specific measurement configuration information differs from the specific measurement configuration information of the previously described preferred embodiment only in that the specific measurement configuration information in the variant embodiment corresponds to the intended high interference cellular user equipment of the devices under test, rather than the intended full high interference devices under test. After understanding these differences, those skilled in the art can appropriately apply various aspects of the specific measurement configuration information of the basic embodiment described above to this modified embodiment, and therefore, the details are not described here.

The third configuration example of the electronic device on the base station side of the embodiment of the present disclosure is described above. As described above, in the third configuration example, based on the expected high-interference device under test determined by the determination unit, the generation unit may generate the interference measurement configuration information with an appropriate degree of detail, thereby reducing the signaling overhead for transmitting the interference measurement configuration information. Note that although the expected high-interference device under test is known based on the determination made by the determination unit here, in practical applications, the electronic device may know the expected high-interference device under test from other approaches (for example, receiving a prediction result about the high-interference device under test obtained in any appropriate manner from an external device having a function of the determination unit), and the disclosure is not limited in this respect.

2.4 fourth configuration example of electronic device on base station side

Fig. 9 is a block diagram showing a fourth configuration example of an electronic device on the base station side according to an embodiment of the present disclosure. The fourth configuration example shown in fig. 9 is an improvement on the basis of the first, second, or third configuration example, and therefore the following description is given in conjunction with the first to third configuration examples, and is not repeated here.

As shown in fig. 9, the electronic device 900 may include a generating unit 910, a communication unit 920, a configuration unit 930, and a determining unit 940, which are respectively similar to the respective units 510 to 540 in the electronic device 500 shown in fig. 5. It is to be emphasized here that the configuration unit 930, the determination unit 940, which is shown in dashed boxes, is an optional unit and may be omitted from the functional architecture of the electronic device 900 of fig. 9. The electronic device 900 further comprises a control unit 950 configured to schedule or power control for the D2D receiver and/or the device under test to reduce interference to the D2D receiver by the device under test according to interference measurement reports received from the D2D receiver. The control unit 950 may perform the scheduling or power control in various suitable manners, including but not limited to scheduling the device under test causing interference to communicate on different time-frequency resources, reducing the transmission power of the device under test, and the like. The present disclosure is not limited in this respect and will not be further described herein.

The above describes a configuration example of an electronic device on the base station side according to an embodiment of the present disclosure. As described above, the electronic device on the base station side according to the embodiment of the present disclosure can provide the D2D receiver with appropriate interference measurement configuration information for the D2D receiver to perform corresponding interference measurement based on the received interference measurement configuration information, and can obtain an interference measurement report from the D2D receiver. Therefore, the electronic device on the base station side according to the embodiments of the present disclosure is able to know the interference experienced by the D2D receiver, thereby providing a possibility of reducing the interference experienced by the D2D receiver through scheduling or power control.

<3. configuration example of electronic apparatus on D2D receiver side >

Corresponding to the configuration example of the electronic apparatus on the base station side described above, the configuration example of the electronic device on the D2D receiver side according to the embodiment of the present disclosure will be described in detail below. Fig. 10 is a block diagram illustrating one configuration example of an electronic device on the D2D receiver side according to an embodiment of the present disclosure.

As shown in fig. 10, the electronic device 1000 may include a communication unit 1010 and an interference measurement unit 1020.

Here, the units of the electronic device 1000 may be included in a processing circuit. The electronic device 1000 may include one processing circuit or may include a plurality of processing circuits. Further, the processing circuitry may include various discrete functional units to perform various different functions and/or operations. It should be noted that these functional units may be physical entities or logical entities, and that units called differently may be implemented by the same physical entity. Further, the electronic device 1000 may comprise, for example, the D2D receiver itself, or may be implemented as a further electronic device attached to the D2D receiver.

According to an embodiment of the present disclosure, the communication unit 1010 may receive, from the base station, interference measurement configuration information indicating a configuration of a reference signal to be transmitted by a device under test that multiplexes wireless communication resources with a D2D receiver within a cell in which the D2D receiver is located. The cell in which the D2D receiver is located may indicate, for example, the service range of a base station, e.g., the coverage area of a base station. The interference measurement unit 1020 may measure a received signal of the reference signal sent by the device under test at the D2D receiver as interference to the D2D receiver according to the received interference measurement configuration information to obtain an interference measurement report. The communication unit 1010 may send an interference measurement report to the base station.

According to the embodiment of the present disclosure, the electronic device 1000 may measure, according to the interference measurement configuration information received from the base station, a received signal of the reference signal sent by the device under test at the D2D receiver as interference to the D2D receiver to obtain an interference measurement report and send it to the base station.

Preferably, the wireless communication resource multiplexed by the D2D receiver and the device under test is an uplink communication resource.

In the case of multiplexing uplink communication resources for D2D communication, the device under test in the cell where the D2D receiver is located and the D2D receiver multiplexes wireless communication resources may include an uplink cellular user equipment. In addition, when more than one pair of D2D devices exist in the cell where the D2D receiver is located, the device under test may further include other D2D transmitters besides the D2D transmitter corresponding to the current D2D receiver. Hereinafter, when there is no need to particularly distinguish between the cellular user equipment and other D2D transmitters in the device under test, both will be collectively referred to as the device under test.

The electronic device 1000 according to the embodiment of the present disclosure may be applied to a scenario where beamforming is used on both the network side (e.g., a base station) and the user equipment side (e.g., a cellular user equipment and a D2D device) of a millimeter wave cellular network, for example. Thus, optionally, in embodiments of the present disclosure, the D2D receiver and the device under test may each communicate using a particular beam (i.e., a directional beam rather than an omni-directional beam).

In an example embodiment, the reference signals to be transmitted by the respective devices under test that the D2D receiver is in the cell where the D2D receiver multiplexes wireless communication resources may include sounding reference signals.

Various preferred embodiments of the electronic device 1000 are described further below.

In a preferred embodiment, such as in the configuration example of the electronic device 500 on the base station side described above with reference to fig. 5, the base station has pre-configured reference signals occupying continuous or concentrated time and frequency resources for each device under test (including cellular user equipment and D2D transmitter) in advance, and determines the expected high-interference device under test, and generates interference measurement configuration information with the appropriate level of detail accordingly.

In this case, the interference measurement configuration information received by the communication unit 1010 of the electronic device 1000 on the D2D receiver side may include: specific measurement configuration information for indicating time and frequency resources of a reference signal of an expected high-interference device under test; and overall measurement configuration information for indicating a union of time and frequency resources of reference signals of all devices under test. Optionally, the specific configuration information may also indicate sequence information of a reference signal of an expected high-interference device under test.

Accordingly, the interference measurement unit 1020 of the electronic device 1000 may be configured to: measuring a received signal of a reference signal of the high-interference device to be tested at the D2D receiver according to the received specific measurement configuration information, wherein the received signal is used as the interference of the high-interference device to be tested on the D2D receiver; and measuring the received signals of the reference signals of all the devices to be tested at the D2D receiver according to the received overall measurement configuration information, wherein the received signals are taken as the overall interference of all the devices to be tested on the D2D receiver.

For example, the interference measurement unit 1020 may measure the received power of the received signal of the reference signal of the device under test at the D2D receiver according to the received measurement configuration information, as an indicator of the interference of the device under test on the D2D receiver. More specifically, in an example of the preferred embodiment, the interference measurement unit 1020 may measure the received power of the received signal of the reference signal of each expected high-interference device under test at the D2D receiver according to the received specific measurement configuration information as an indicator of its interference to the D2D receiver. In addition, the interference measurement unit 1020 may measure the sum of the received powers of the received signals of the reference signals of all the devices under test at the D2D receiver as an indicator of the interference of all the devices under test on the D2D receiver according to the received overall measurement configuration information.

Further details of specific examples of such measurements by interference measurement unit 1020 will be described below. In this example, all L devices under test are represented by a set K, where the reference signal of each device under test takes the form of an SRS reference signal. The specific measurement configuration information received by the communication unit indicates the expected high-interference device under test from the set K, i.e. the first group of devices under test K_AAnd additionally indicates sequence information of the reference signal of each device under test. Furthermore, the overall measurement configuration information that has been received by the communication unit indicates the union of the time and frequency resources of the reference signals of all devices under test in the set K. The communication unit does not receive data for devices under test other than the expected high interference device under test, i.e. the second group K_B＝K-K_AOf the reference signal of each device under test.

On the one hand, for K_AThe ith expected high-interference device under test (hereinafter also simply referred to as "high-interference device under test") (ii)Device under test i), since the specific measurement configuration information that the communication unit has received indicates the time and frequency resources and preferred sequence information of its reference signal, the received power of this reference signal can be calculated according to the following equations (1) to (2) as an indicator of the interference of its i-th expected high-interference device under test to the D2D receiver.

Equation (1) is used to change the received signal of the device under test i into the time domain, where r_f,iRepresenting the received signal, s, extracted from the corresponding time-frequency location according to the time and frequency resources of the reference signal of the device under test indicated in the received specific measurement configuration information_iIndicating that the length of the device under test obtained according to the time and frequency resources and the sequence information of the reference signal of the device under test indicated in the specific measurement configuration information is N_zcThe SRS sequence of (a) is determined,represents N_zcIDFT matrix of points by which corresponding signals are transformed into time-domain signals r_t,i。

Equation (2) for a signal r based on a transformation into the time domain_t,iCalculating the received power of the received signal of the reference signal of the device i under test, wherein W represents a rectangular window function and W represents a window length, and considering the power leakage of the IDFT, it is practically possible to set W to [1,1, …,1,0, …,0,1]^T，Represents the total noise power at the receiver, which may be measured by interference measurement unit 1020 in various suitable ways. In this way, can be directed to K_AEach of which is expectedDetermining interference I caused by high-interference equipment I to be tested_i。

As an alternative to K_AIf the specific measurement configuration information received by the communication unit 1010 only indicates the time and frequency resources of its reference signal and does not indicate the sequence information thereof, the interference measurement unit 1020 may directly measure the received signal r extracted from the corresponding time-frequency location_f,iReceive power of I'_iAs the interference of the device under test i to the D2D receiver.

On the other hand, for all the devices under test in K, since the overall measurement configuration information received by the communication unit 1010 indicates the union of time and frequency resources of its reference signal, the interference measurement unit 1020 may directly extract the overall received signal r from the time-frequency location corresponding to the union_fAnd measuring the received signal r_fReceived power I of_sumAs an index representing the total interference caused by each reference signal to the receiver. Here, since it is not necessary to separately calculate the reception power of the reception signal of each device under test from the time and frequency resources of the SRS reference signal, the processing is simplified.

Alternatively, if the noise at the receiver can be obtained in advance by measurement or the like, the reception power I can be measured from the above_sumAnd l'_iThe corresponding noise is subtracted to obtain a more accurate measurement. In addition, preferably, in order to reduce the influence of noise at the receiver, the base station side may enable each device under test to use a longer SRS sequence as a reference signal to increase the power of the reference signal so as to improve the measurement performance.

Some details of a specific example in which the interference measurement unit 1020 measures the received power of the received signal of the reference signal of the device under test at the D2D receiver as an index of the interference of the device under test on the D2D receiver based on the obtained interference measurement configuration information are described above. Note that as long as the interference measurement configuration information obtained by the communication unit 1010 includes the specific measurement configuration information and the overall measurement configuration information as described above, the interference measurement unit 1020 can obtain the received power of the reference signal of each expected high-interference device under test and the total received power of the reference signals of all devices under test in various appropriate manners based on such information, and is not limited to the details of the above specific example, and is not described here again.

The interference measurement unit 1020 may determine interference of the device under test other than the high-interference device under test on the D2D receiver based on the interference of the high-interference device under test and the overall interference of all the devices under test measured, for example, in the manner described above. Still taking the case of calculating the received power as an index of interference as an example, the interference measurement unit 1020 may calculate the received power I of the reference signal of the device under test at the D2D receiver of the device under test other than the high-interference device under test according to the following formula (3)_othersAs indicators of the corresponding interference:

based on the determined various interferences (indicators of interferences), the interference measurement unit 1020 may make the following determinations: interference I of each high-interference device under test_iIs greater than a first threshold value I_th1And interference I of other devices under test except for high-interference devices under test_othersIs greater than a second threshold value I_th2。

Here, optionally, in the case of taking the received power as an indicator of interference, the interference measurement unit 1020 may be further configured to: appropriately configuring respective power thresholds, e.g., the first threshold I above, based on the received power of the D2D receiver for the D2D signal and the noise power at the D2D receiver_th1And a second threshold value I_th2. For example, when the reception power of the D2D receiver for the D2D signal is large, the first threshold I may be set to be relatively large_th1And a second threshold value I_th2. When the noise power at the D2D receiver is relatively large, a relatively large first threshold I may also be set_th1And a second threshold value I_th2。

When measured interference I of high interference device under test_iGreater than a first threshold value I_th1In this case, the interference measurement unit 1020 may determine that the D2D receiver receives interference from the high-interference device under test and determine interference I of other devices under test other than the high-interference device under test_othersGreater than a second threshold value I_th2The interference measurement unit may determine that the D2D receiver receives interference from devices under test other than the high interference device under test.

The interference measurement unit 1020 may generate an interference measurement report, for example based on a determination of such first and second thresholds, which includes at least: a first part to indicate whether the D2D receiver receives interference from an expected high interference device under test; and a second part to indicate whether the D2D receiver receives interference from devices under test other than the expected high interference device under test.

As an example, the interference measurement report generated by the interference measurement unit 1020 may be in the form of a bit sequence, wherein the length of the first portion is the expected number k of high interference devices under test_aEach bit indicating whether the D2D receiver received interference from a corresponding expected high interference device under test, the second portion having a length of 1 indicating whether interference was received from a device under test other than the expected high interference device under test. Compared with the case that whether interference is received or not is respectively indicated for all the devices under test (the sequence length is the number L of all the devices under test), the interference measurement report generated by the interference measurement unit 1020 can reduce the corresponding signaling overhead.

Optionally, in one variant of the above-described preferred embodiment, when the second part of the interference measurement report generated by the interference measurement unit 1020 indicates that the D2D receiver has received interference from other devices under test than the expected high-interference device under test, the communication unit 1010 of the electronic device 1000 may further receive additional specific measurement configuration information from the base station, the additional specific measurement configuration information indicating time and frequency resources of the reference signal of the expected next-highest-interference device under test except for the expected high-interference device under test.

In this case, the interference measurement unit 1020 may be further configured to: measuring a received signal of the reference signal of the secondary high-interference device under test at the D2D receiver according to the received additional specific measurement configuration information, and taking the received signal as the interference of the secondary high-interference device under test on the D2D receiver; and determining the interference of the devices to be tested except the high-interference and second-highest-interference devices to be tested on the D2D receiver based on the measured interference of the high-interference devices to be tested, the interference of the second-highest-interference devices to be tested and the overall interference of all the devices to be tested.

Here, the interference measurement unit 1020 may determine the interference of the expected secondary interference device under test to the D2D receiver, and accordingly determine the interference of other devices under test other than the high interference and secondary high interference device under test to the D2D receiver, in a similar manner as described above when determining interference for the expected high interference device under test. As an example, the interference measurement unit 1020 obtains the interference I of each secondary high interference device under test j_j(j∈K′_A，K′_AIs a set of expected secondary interference devices under test) and obtains interference I 'of other devices under test to the D2D receiver except for high interference and secondary high interference devices under test'_others：

Accordingly, the interference measurement unit 1020 may make the following determination based on the determined various interferences (indicators of interferences): interference I of each secondary high interference device under test_jIs greater than a first threshold value I_th1And interference I 'of other equipment to be tested except high-interference and secondary high-interference equipment to be tested'_othersIs greater than a second threshold value I_th2。

When the measured interference of the next highest-interference device under test is greater than the first threshold, the interference measurement unit 1020 may determine that the D2D receiver receives interference from the next highest-interference device under test, and when the determined interference of other devices under test other than the high-interference and next highest-interference device under test is greater than the second threshold, the interference measurement unit 1020 may determine that the D2D receiver receives interference from other devices under test other than the high-interference and next highest-interference device under test.

Accordingly, in this variant embodiment, the interference measurement unit 1020 may be further configured to transmit an additional interference measurement report to the base station, the additional interference measurement report comprising: a first part for indicating whether interference is received from an expected next highest interference device under test; and a second part for indicating whether interference is received from other devices under test than the expected high interference and next-high interference devices under test.

As an example, the additional interference measurement report generated by the interference measurement unit 1020 may also be in the form of a bit sequence, where the length of the first part is the expected number k of devices under test with second highest interference_a2Each bit indicates whether the D2D receiver receives interference from a corresponding expected next highest interference device under test, and the second portion has a length of 1, which indicates whether interference is received from devices under test other than the expected highest interference and next highest interference devices under test.

The above describes an example case where the measurement configuration information received by the communication unit includes specific measurement configuration information on the high-interference device under test and overall measurement configuration information on all the devices under test. In this case, as discussed above, the base station side has previously configured reference signals occupying continuous time and frequency resources (such as the case of the SRS reference signal described with reference to fig. 4) for each device under test (including the cellular user equipment and the D2D transmitter), so that it is possible to effectively reduce the signaling overhead of measuring configuration information and to simplify the process of determining interference and reduce the amount of computation in the electronic device 1000 on the D2D receiver side.

On the other hand, in practical applications, the following possibilities exist: the base station side can only pre-configure reference signals occupying continuous or concentrated time and frequency resources for a part of devices to be tested in the cell, such as all cellular user equipment, and pre-configure reference signals occupying other time and frequency resources for other devices to be tested in the cell, such as a D2D transmitter which may cause interference.

In this case, in another modified embodiment of the preferred embodiment described above, the interference measurement configuration information received by the communication unit 1010 in the electronic device 1000 on the D2D receiver side may include, for example: D2D measurement configuration information indicating time and frequency resources of the reference signal of a D2D transmitter in a device under test; and overall measurement configuration information indicating a union of time and frequency resources of the reference signals of all cellular user equipments in the device under test.

Accordingly, the interference measurement unit 1020 of the electronic device 1000 may be further configured to: measuring a received signal of a reference signal of a D2D transmitter in the device under test at the current D2D receiver according to the received D2D measurement configuration information, wherein the received signal is used as interference of the D2D transmitter in the device under test on the current D2D receiver; and measuring the received signals of the reference signals of all the cellular user equipment in the device to be tested at the current D2D receiver according to the received overall measurement configuration information, wherein the received signals are taken as the overall interference of all the cellular user equipment in the device to be tested on the current D2D receiver.

Here, the determination of interference by the interference measurement unit for the D2D transmitter is similar to the determination of interference for the high-interference device under test described above, except that here it is the D2D transmitter in the device under test and not the high-interference device under test; and the determination of the overall interference of the interference measurement unit for all cellular user equipments is similar to the above described determination of the overall interference for all devices under test, except that here all cellular user equipments in the devices under test are targeted and not all devices under test. Those skilled in the art can appropriately apply the various aspects of the preferred embodiments described above to the present variant embodiment, after understanding these differences, and therefore will not be described here again.

In one example of this variant embodiment, the reference signal of the D2D transmitter in the device under test may comprise a channel state information reference signal (CSI-RS) or a demodulation reference signal (DM-RS), and the reference signal of the cellular user equipment in the device under test comprises a sounding reference signal. In other words, the base station side may pre-configure SRS reference signals occupying continuous or concentrated time and frequency resources for all cellular user equipments among the devices to be tested, and pre-configure CSI-RS or DM-RS that the D2D transmitter can adopt as reference signals it adopts.

Optionally, in this modified embodiment, a high-interference device under test in the cellular user equipment under test may also be considered. That is, in this variant embodiment, optionally, the communication unit 1010 in the electronic device 1000 on the D2D receiver side may be further configured to receive specific measurement configuration information from the base station for indicating time and frequency resources of a reference signal of an intended high interference cellular user equipment, and the interference measurement unit 1020 may determine the interference of the intended high interference cellular user equipment based on this information. Those skilled in the art can appropriately apply the related processing related to the specific measurement configuration in the above-described preferred embodiment to this modified embodiment, and therefore, the description thereof is omitted here.

The preferred embodiment and the modified embodiment of the electronic device on the D2D receiver side of the embodiment of the present disclosure are described above, and correspond to the respective configuration examples of the electronic device on the base station side described above with reference to fig. 2, fig. 3, fig. 5, and fig. 7, in particular, the third configuration example shown in fig. 5. As described above, in these preferred embodiments, the electronic device on the D2D receiver side can perform corresponding interference measurement and generate a corresponding measurement report based on the interference measurement configuration information with an appropriate level of detail received through the communication unit, thereby reducing the processing amount of interference measurement and the signaling overhead for sending the interference measurement report. For various details not described here, reference may be made to the above-described respective configuration examples of the electronic device on the base station side.

<4. example of information interaction Process >

[4-1. first example of information interaction Process ]

Fig. 11 is a flowchart illustrating a first example of an information interaction process according to an embodiment of the present disclosure. This example may be implemented by the electronic device 200 on the base station side described above with reference to fig. 2 operating as a base station BS, and by the electronic device 1000 on the D2D receiver side described above with reference to fig. 10 operating as a D2D receiver (D2D Rx).

As shown in fig. 11, in step S1101, the base station BS generates interference measurement configuration information indicating a configuration of a reference signal to be transmitted by a device under test that multiplexes wireless communication resources with D2D Rx within a cell in which D2D Rx is located. After that, the base station BS transmits interference measurement configuration information to D2D Rx in step S1102. Next, in step S1103, the D2D Rx measures, as interference to the D2D Rx, a received signal of the reference signal at the D2D Rx sent by the device under test according to the interference measurement configuration information, and generates an interference measurement report. Subsequently, in step S1104, D2D Rx transmits the interference measurement report to the base station BS.

[4-2. second example of information interaction Process ]

Fig. 12 is a flowchart illustrating a second example of an information interaction process according to an embodiment of the present disclosure. This example may be implemented by the electronic device 300 on the base station side described above with reference to fig. 3 operating as a base station BS, and by the electronic device 1000 on the D2D receiver side described above with reference to fig. 10 operating as a D2D receiver (D2D Rx).

The difference between the exemplary flow of fig. 12 and the exemplary flow of fig. 11 is that a step S1201 in which the base station side configures a reference signal of a signal to be measured in advance is additionally included. Otherwise, steps S1202 to S1205 in the exemplary flow of fig. 12 are similar to steps S1101 to S1104 in the exemplary flow of fig. 11, respectively, and are not repeated.

As shown in fig. 12, in step S1101, the base station BS configures a reference signal of the signal to be measured in advance. Preferably, the base station BS may pre-configure a reference signal occupying continuous or centralized time and frequency resources for at least a part of the devices under test in the cell. For example, a sounding reference signal occupying continuous or concentrated time and frequency resources may be configured as the reference signal.

[4-3. third example of information interaction Process ]

Fig. 13 is a flowchart illustrating a third example of an information interaction process according to an embodiment of the present disclosure. This example may be implemented by the electronic device 500 on the base station side described above with reference to fig. 5 operating as a base station BS, and by the electronic device 1000 on the D2D receiver side described above with reference to fig. 10 operating as a D2D receiver (D2D Rx).

The difference between the exemplary flow of fig. 13 and the exemplary flow of fig. 12 is that a step S1302 of determining an expected high-interference device under test on the base station side is additionally included. Otherwise, S1301, and steps S1303 to 1306 in the example flow of fig. 12 are substantially similar to steps S1201 to S1105, respectively, in the example flow of fig. 12, and only differences of these steps will be described below.

As shown in fig. 13, in step S1302, the base station BS determines an expected high-interference device under test. Next, in step S1303, the base station BS may generate interference measurement configuration information with an appropriate level of detail based on the determination result of step S1302, and transmit the information to D2D Rx in the next step S1304. The interference measurement configuration information herein may include: specific measurement configuration information for indicating time and frequency resources of a reference signal of an expected high-interference device under test; and overall measurement configuration information for indicating a union of time and frequency resources of reference signals of all devices under test.

Next, in step S1305, D2D Rx may perform measurement based on the received measurement configuration information. Specifically, D2D Rx may measure the expected interference of the high interference device under test to D2D Rx based on the received specific measurement configuration information, and measure the overall interference of all devices under test to the D2D receiver based on the received overall measurement configuration information. D2D Rx may generate an interference measurement report based on its measurements and send the report to the base station BS in step S1306. Here, the measurement report includes, by way of example: a first part to indicate whether the D2D receiver receives interference from an expected high interference device under test; and a second part to indicate whether the D2D receiver receives interference from devices under test other than the expected high interference device under test.

Note that the above example flow is equally applicable to the following modified embodiment: in the processing from S1302 to S1306, the high-interference device under test is replaced with "D2D receiver in device under test" and all the devices under test are replaced with "all the cellular user equipments in device under test", respectively. Such variant embodiments have been described in detail in the above configuration examples with respect to the apparatus, and are not described here again.

[4-4. fourth example of information interaction procedure ]

Fig. 14 is a flowchart illustrating a fourth example of an information interaction process according to an embodiment of the present disclosure. This example may be implemented by the electronic device 500 on the base station side described above with reference to fig. 5 operating as a base station BS, and by the electronic device 1000 on the D2D receiver side described above with reference to fig. 10 operating as a D2D receiver (D2D Rx).

Steps S1401 to S1405 in the example flow of fig. 14 are similar to steps S1301 to S1305 in the example flow of fig. 13, and thus the description of these steps is omitted.

The difference of the example flow of fig. 14 compared to the example flow of fig. 13 begins at step S1406, where the second part defining the transmitted interference measurement report indicates a positive result. In other words, the interference measurement report transmitted from D2D Rx to the base station BS in step S1406 indicates that interference is received from other devices under test other than the expected high-interference device under test.

In this case, in step S1407, the base station BS determines the expected next highest-interference device under test except the expected high-interference device under test, and transmits additional specific measurement configuration information indicating the specific measurement configuration of the reference signal of the expected next highest-interference device under test to the D2D Rx in step S1408.

Accordingly, in step S1409, the D2D Rx performs additional interference measurement based on the additional specific measurement configuration information to generate an additional interference measurement report, and transmits the additional interference measurement report to the base station BS in step S14010. The additional interference measurement report herein may include: a first part for indicating whether interference is received from an expected next highest interference device under test; and a second part for indicating whether interference is received from other devices under test than the expected high interference and next-high interference devices under test.

[4-5. fifth example of information interaction procedure ]

Fig. 15 is a flowchart illustrating a fifth example of an information interaction process according to an embodiment of the present disclosure. This example may be implemented by the electronic device 900 on the base station side described above with reference to fig. 9 operating as a base station BS, and by the electronic device 1000 on the D2D receiver side described above with reference to fig. 10 operating as a D2D receiver (D2D Rx).

Steps S1501 to S1503 in the exemplary flow of fig. 15 are similar to steps S1101 to S1103 in the exemplary flow of fig. 11, respectively, and the description of these steps will be omitted below. The flow in the fifth example of fig. 15 differs from the example flow of fig. 11 in that a step S1504 of controlling by the base station side according to the interference measurement report to reduce interference is additionally included. In this step, the base station BS performs scheduling or power control for the D2D receiver and/or the device under test according to the interference measurement report received from the D2D receiver to reduce the interference of the device under test on the D2D receiver.

It should be noted that the information interaction processes shown in fig. 11 to 15 are only examples, and those skilled in the art may make appropriate modifications thereof in light of the principles and practices of the present disclosure, and such modifications should be clearly considered as falling within the scope of the present disclosure.

<5. method example >

In correspondence with the above-described apparatus embodiments, the present disclosure provides the following method embodiments.

A method for wireless communication performed by an electronic apparatus on a base station side (i.e., the electronic apparatus 200, the electronic apparatus 300, the electronic apparatus 500, or the electronic apparatus 900) according to an embodiment of the present disclosure is described first.

Fig. 16 is a flowchart showing an example of a procedure for a wireless communication method on the base station side according to an embodiment of the present disclosure.

As shown in fig. 16, in step S1601, interference measurement configuration information is generated, which indicates a configuration of a reference signal to be transmitted by a device under test that multiplexes wireless communication resources with the D2D receiver within a cell in which the D2D receiver is located.

Next, in step S1602, interference measurement configuration information is transmitted to the D2D receiver.

Next, in step S1603, an interference measurement report is received from the D2D receiver, the interference measurement report being obtained by measuring a received signal of a reference signal transmitted by the device under test at the D2D receiver as interference to the D2D receiver according to the interference measurement configuration information.

Optionally, the wireless communication resource that the D2D receiver multiplexes with the device under test includes an uplink communication resource. Optionally, the device under test may include an uplink cellular user equipment, and optionally further include a D2D transmitter other than the D2D transmitter corresponding to the current D2D receiver. Preferably, the D2D receiver and the device under test each communicate using a particular beam.

Optionally, the method for wireless communication may further include: and pre-configuring the reference signal for each device to be tested in the cell. Preferably, the reference signals of at least a part of the devices under test within a cell are pre-configured to occupy contiguous or concentrated time and frequency resources. Preferably, such reference signals comprise sounding reference signals.

Optionally, the interference measurement configuration information generated in step S1601 may include: specific measurement configuration information for indicating time and frequency resources of the reference signal of an expected high-interference device under test; and overall measurement configuration information indicating a union of time and frequency resources of the reference signals of all devices under test. Optionally, the specific configuration information further indicates sequence information of the reference signal of an expected high-interference device under test.

Optionally, the interference measurement report received in step S1603 at least includes: a first part to indicate whether the D2D receiver receives interference from an expected high interference device under test; and a second part to indicate whether the D2D receiver receives interference from devices under test other than the expected high interference device under test.

Optionally, the method for wireless communication may further include: in the event that the second part of the received interference measurement report indicates that the D2D receiver receives interference from other devices under test than the expected high interference device under test, sending additional specific measurement configuration information to the D2D receiver indicating a specific measurement configuration of the reference signal of the expected next highest interference device under test other than the expected high interference device under test. Further, optionally, the method for wireless communication may further include: receiving an additional interference measurement report from the D2D receiver, the additional interference measurement report comprising: a first part for indicating whether interference is received from an expected next highest interference device under test; and a second part for indicating whether interference is received from other devices under test than the expected high interference and next-high interference devices under test.

Optionally, the method for wireless communication may further include: and determining the expected high-interference device to be tested based on the position information of the D2D receiver and the position information of the device to be tested in the cell. As an example, the device under test may be determined to be an expected high interference device under test if the distance between the D2D receiver and the device under test is less than a predetermined threshold. Further, if the D2D receiver and the device under test respectively use specific beams for communication, the device under test may be determined to be an expected high-interference device under test in a case where the reception beam of the D2D receiver covers the location of the device under test and/or the transmission beam of the device under test covers the location of the D2D receiver.

Further, optionally, the interference measurement configuration information generated in step S1601 may include: D2D measurement configuration information indicating time and frequency resources of the reference signal of a D2D transmitter in a device under test; and overall measurement configuration information indicating a union of time and frequency resources of the reference signals of all cellular user equipments in the device under test. Optionally, in this case, the interference measurement configuration information may further include: specific measurement configuration information for indicating time and frequency resources of said reference signal of an intended high interference cellular user equipment. As an example, the reference signal of the D2D transmitter in the device under test comprises a channel state information reference signal or a demodulation reference signal, and the reference signal of the cellular user equipment in the device under test comprises a sounding reference signal.

Optionally, the method for wireless communication may further include: and scheduling or power control is carried out on the D2D receiver and/or the device under test according to the interference measurement report received from the D2D receiver so as to reduce the interference of the device under test on the D2D receiver.

According to an embodiment of the present disclosure, a main body performing the above method may be the electronic apparatus 200, the electronic apparatus 300, the electronic apparatus 500, or the electronic apparatus 900 on the base station side according to an embodiment of the present disclosure, and thus all the embodiments described above with respect to the electronic apparatus 200, the electronic apparatus 300, the electronic apparatus 500, and the electronic apparatus 900 are applicable thereto.

A method for wireless communication performed by an electronic device on the D2D receiver side (i.e., the electronic device 1000) according to an embodiment of the present disclosure will be described in detail next.

Fig. 17 is a flowchart illustrating a process example for a wireless communication method at the D2D receiver side according to an embodiment of the present disclosure.

As shown in fig. 17, in step S1701, interference measurement configuration information indicating a configuration of a reference signal to be transmitted by a device under test that multiplexes wireless communication resources with a D2D receiver within a cell in which the D2D receiver is located is received from a base station.

Next, in step S1702, according to the received interference measurement configuration information, a received signal of a reference signal sent by the device under test at the D2D receiver is measured as interference to the D2D receiver to obtain an interference measurement report.

Next, in step S1703, an interference measurement report is transmitted to the base station.

Optionally, the wireless communication resource that the D2D receiver multiplexes with the device under test includes an uplink communication resource. Optionally, the device under test may include an uplink cellular user equipment, and optionally further include a D2D transmitter other than the D2D transmitter corresponding to the current D2D receiver. Preferably, the D2D receiver and the device under test each communicate using a particular beam. Preferably, the reference signal comprises a sounding reference signal.

Optionally, the interference measurement configuration information received in step S1701 includes: specific measurement configuration information for indicating time and frequency resources of the reference signal of an expected high-interference device under test; and overall measurement configuration information indicating a union of time and frequency resources of the reference signals of all devices under test. Optionally, the specific configuration information further indicates sequence information of the reference signal of the expected high-interference device under test.

Optionally, the performing interference measurement in step S1702 may include: measuring a received signal of the reference signal of the high-interference device to be tested at the D2D receiver according to the received specific measurement configuration information, wherein the received signal is used as the interference of the high-interference device to be tested on the D2D receiver; and measuring the received signals of the reference signals of all the devices under test at the D2D receiver according to the received overall measurement configuration information, wherein the received signals are taken as the overall interference of all the devices under test on the D2D receiver. Alternatively, the interference of the devices under test other than the high-interference device under test on the D2D receiver may be determined based on the measured interference of the high-interference device under test and the overall interference of all the devices under test.

Optionally, the performing interference measurement in step S1702 may further include: when the measured interference of the high-interference device to be tested is larger than a first threshold value, determining that the D2D receiver receives the interference from the high-interference device to be tested; and when the determined interference of the other devices to be tested except the high-interference device to be tested is larger than the second threshold value, determining that the D2D receiver receives the interference from the other devices to be tested except the high-interference device to be tested. Accordingly, the interference measurement report generated in step S1702 may include at least: a first part to indicate whether the D2D receiver receives interference from an expected high interference device under test; and a second part to indicate whether the D2D receiver receives interference from devices under test other than the expected high interference device under test.

Optionally, the method for wireless communication further comprises: in case the second part of the above interference measurement report indicates that the D2D receiver receives interference from other devices under test than the expected high interference device under test, additional specific measurement configuration information is received from the base station indicating time and frequency resources of the reference signal of the expected next highest interference device under test, except the expected high interference device under test.

Optionally, the method for wireless communication may further include: measuring a received signal of the reference signal of the secondary high-interference device under test at the D2D receiver according to the received additional specific measurement configuration information, as the interference of the secondary high-interference device under test on the D2D receiver; and determining the interference of the devices to be tested except the high-interference and second-highest-interference devices to be tested on the D2D receiver based on the measured interference of the high-interference devices to be tested, the interference of the second-highest-interference devices to be tested and the overall interference of all the devices to be tested. At this time, optionally, when the measured interference of the second highest-interference device under test is greater than the first threshold, it may be determined that the D2D receiver receives interference from the second highest-interference device under test; and when the determined interference of the other devices to be tested except for the high-interference and second-highest-interference devices to be tested is larger than the second threshold, it may be determined that the D2D receiver receives interference from the other devices to be tested except for the high-interference and second-highest-interference devices to be tested.

Optionally, the method for wireless communication may further comprise transmitting an additional interference measurement report to the base station, the additional interference measurement report comprising: a first part for indicating whether interference is received from an expected next highest interference device under test; and a second part for indicating whether interference is received from other devices under test than the expected high interference and next-high interference devices under test.

Further, optionally, the interference measurement configuration information received in step S1701 may include: D2D measurement configuration information indicating time and frequency resources of the reference signal of a D2D transmitter in a device under test; and overall measurement configuration information indicating a union of time and frequency resources of the reference signals of all cellular user equipments in the device under test.

In this case, optionally, the performing of the interference measurement in step S1702 may include: measuring a received signal of the reference signal of the D2D transmitter in the device under test at the current D2D receiver according to the received D2D measurement configuration information as interference of the D2D transmitter in the device under test on the current D2D receiver; and measuring the received signals of the reference signals of all the cellular user equipment in the device to be tested at the current D2D receiver according to the received overall measurement configuration information, wherein the received signals are taken as the overall interference of all the cellular user equipment in the device to be tested on the current D2D receiver. As an example, the reference signal of the D2D transmitter in the device under test comprises a channel state information reference signal or a demodulation reference signal, and the reference signal of the cellular user equipment in the device under test comprises a sounding reference signal.

Optionally, the method for wireless communication may further include: and measuring the receiving power of the reference signal of the device to be measured at the D2D receiver according to the received measurement configuration information, wherein the receiving power is used as an index of the interference of the device to be measured on the D2D receiver. Preferably, it is determined that the D2D receiver receives interference from the corresponding device under test when the measured received power of the received signal of the reference signal is greater than the power threshold. Further, optionally, the method for wireless communication may further include: the power threshold is configured based on the received power of the D2D receiver for the D2D signal and the noise power at the D2D receiver.

According to an embodiment of the present disclosure, the subject performing the above method may be the electronic device 1000 according to an embodiment of the present disclosure, and thus various aspects of the foregoing regarding the embodiment of the electronic device 1000 are applicable thereto.

<6. application example >

The techniques of this disclosure can be applied to a variety of products.

For example, the electronic devices 200, 300, 500, and 900 on the base station side may be implemented as any type of base station device, such as a macro eNB and a small eNB, and may also be implemented as any type of gNB (base station in a 5G system). The small eNB may be an eNB that covers a cell smaller than a macro cell, such as a pico eNB, a micro eNB, and a home (femto) eNB. Alternatively, the base station may be implemented as any other type of base station, such as a NodeB and a Base Transceiver Station (BTS). The base station may include: a main body (also referred to as a base station apparatus) configured to control wireless communication; and one or more Remote Radio Heads (RRHs) disposed at a different place from the main body.

In addition, the electronic devices 200, 300, 500, and 900 on the base station side may also be implemented as any type of TRP. The TRP may have a transmitting and receiving function, and may receive information from or transmit information to, for example, a user equipment and a base station apparatus. In a typical example, the TRP may provide a service to the user equipment and be controlled by the base station apparatus. Further, the TRP may have a structure similar to that of the base station apparatus, or may have only a structure related to transmission and reception of information in the base station apparatus.

The electronic apparatus 1000 on the D2D receiver side may be various user apparatuses, which may be implemented as a mobile terminal such as a smart phone, a tablet Personal Computer (PC), a notebook PC, a portable game terminal, a portable/cryptographic dog-type mobile router, and a digital camera, or a vehicle-mounted terminal such as a car navigation apparatus. The user equipment may also be implemented as a terminal (also referred to as a Machine Type Communication (MTC) terminal) that performs machine-to-machine (M2M) communication. Further, the user equipment may be a wireless communication module (such as an integrated circuit module including a single die) mounted on each of the user equipments described above.

[ application example with respect to base station ]

(first application example)

Fig. 18 is a block diagram illustrating a first example of a schematic configuration of an eNB to which the technology of the present disclosure may be applied. The eNB 1800 includes one or more antennas 1810 and base station equipment 1820. The base station device 1820 and each antenna 1810 may be connected to each other via an RF cable.

Each of the antennas 1810 includes a single or multiple antenna elements, such as multiple antenna elements included in a multiple-input multiple-output (MIMO) antenna, and is used for the base station apparatus 1820 to transmit and receive wireless signals. As shown in fig. 18, the eNB 1800 may include multiple antennas 1810. For example, the multiple antennas 1810 may be compatible with multiple frequency bands used by the eNB 1800. Although fig. 18 shows an example in which the eNB 1800 includes multiple antennas 1810, the eNB 1800 may also include a single antenna 1810.

The base station device 1820 includes a controller 1821, memory 1822, a network interface 1823, and a wireless communication interface 1825.

The controller 1821 may be, for example, a CPU or a DSP, and operates various functions of higher layers of the base station apparatus 1820. For example, the controller 1821 generates data packets from data in signals processed by the wireless communication interface 1825 and communicates the generated packets via the network interface 1823. The controller 1821 may bundle data from the plurality of baseband processors to generate a bundle packet, and communicate the generated bundle packet. The controller 1821 may have logic functions to perform the following controls: such as radio resource control, radio bearer control, mobility management, admission control and scheduling. The control may be performed in connection with a nearby eNB or core network node. The memory 1822 includes a RAM and a ROM, and stores programs executed by the controller 1821 and various types of control data (such as a terminal list, transmission power data, and scheduling data).

The network interface 1823 is a communication interface for connecting the base station apparatus 1820 to the core network 1824. The controller 1821 may communicate with a core network node or another eNB via a network interface 1823. In this case, the eNB 1800 and a core network node or other enbs may be connected to each other through a logical interface, such as an S1 interface and an X2 interface. The network interface 1823 may also be a wired communication interface or a wireless communication interface for a wireless backhaul. If network interface 1823 is a wireless communication interface, network interface 1823 may use a higher frequency band for wireless communications than the frequency band used by wireless communication interface 1825.

The wireless communication interface 1825 supports any cellular communication scheme, such as Long Term Evolution (LTE) and LTE-advanced, and provides wireless connectivity via an antenna 1810 to terminals located in the cell of the eNB 1800. The wireless communication interface 1825 may generally include, for example, a baseband (BB) processor 1826 and RF circuitry 1827. The BB processor 1826 may perform various types of signal processing of layers such as L1, Medium Access Control (MAC), Radio Link Control (RLC), and Packet Data Convergence Protocol (PDCP), for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing. The BB processor 1826 may have a part or all of the above-described logic functions in place of the controller 1821. The BB processor 1826 may be a memory storing a communication control program, or a module comprising a processor and associated circuitry configured to execute a program. The update program may cause the function of the BB processor 1826 to change. The module may be a card or blade that is inserted into a slot of the base station device 1820. Alternatively, the module may be a chip mounted on a card or blade. Meanwhile, the RF circuit 1827 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive a wireless signal via the antenna 1810.

As shown in fig. 18, wireless communication interface 1825 may include a plurality of BB processors 1826. For example, the plurality of BB processors 1826 may be compatible with a plurality of frequency bands used by the eNB 1800. As shown in fig. 18, wireless communication interface 1825 may include a plurality of RF circuits 1827. For example, the plurality of RF circuits 1827 may be compatible with a plurality of antenna elements. Although fig. 18 shows an example in which the wireless communication interface 1825 includes a plurality of BB processors 1826 and a plurality of RF circuits 1827, the wireless communication interface 1825 may also include a single BB processor 1826 or a single RF circuit 1827.

In the eNB 1800 shown in fig. 18, the communication units 220, 320, 520, 920 in the electronic devices 200, 300, 500, 900 described hereinbefore with reference to fig. 2, 3, 5, 9 may be implemented by a wireless communication interface 1825. At least a part of the functions of the generating unit 210, 310, 510, 910 in the electronic device 200, 300, 500, 900 may be implemented by the controller 1821. For example, the controller 1821 may execute the functions of the generating unit 210, 310, 510, or 910 by executing instructions stored in the memory 1822 to generate interference measurement configuration information indicating a configuration of reference signals to be transmitted by a device under test that multiplexes wireless communication resources with the D2D receiver within a cell in which the D2D receiver is located. Similarly, at least a part of functions of the configuration unit 330, 530 in the electronic device 300, 500, at least a part of functions of the determination unit 540 in the electronic device 500, and at least a part of functions of the control unit 950 in the electronic device 900 may also be implemented by the controller 1821, which is not described herein again.

(second application example)

Fig. 19 is a block diagram illustrating a second example of a schematic configuration of an eNB to which the technology of the present disclosure may be applied. eNB 1930 includes one or more antennas 1940, base station apparatus 1950, and RRHs 1960. The RRH1960 and each antenna 1940 may be connected to each other via an RF cable. The base station apparatus 1950 and RRH1960 may be connected to each other via a high-speed line such as a fiber optic cable.

Each of the antennas 1940 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for the RRH1960 to transmit and receive wireless signals. As shown in fig. 19, eNB 1930 may include multiple antennas 1940. For example, the plurality of antennas 1940 may be compatible with a plurality of frequency bands used by eNB 1930. Although fig. 19 shows an example in which eNB 1930 includes multiple antennas 1940, eNB 1930 may also include a single antenna 1940.

The base station device 1950 includes a controller 1951, a memory 1952, a network interface 1953, a wireless communication interface 1955, and a connection interface 1957. The controller 1951, memory 1952, and network interface 1953 are the same as the controller 1821, memory 1822, and network interface 1823 described with reference to fig. 19.

Wireless communication interface 1955 supports any cellular communication scheme (such as LTE and LTE-advanced) and provides wireless communication via RRH1960 and antenna 1940 to terminals located in a sector corresponding to RRH 1960. Wireless communication interface 1955 may generally include a BB processor 1956, for example. The BB processor 1956 is the same as the BB processor 1826 described with reference to fig. 18, except that the BB processor 1956 is connected to the RF circuitry 1964 of the RRH1960 via a connection interface 1957. As shown in fig. 19, wireless communication interface 1955 may include a plurality of BB processors 1956. For example, the plurality of BB processors 1956 may be compatible with the plurality of frequency bands used by eNB 1930. Although fig. 19 shows an example in which the wireless communication interface 1955 includes a plurality of BB processors 1956, the wireless communication interface 1955 may include a single BB processor 1956.

Connection interface 1957 is an interface used to connect base station device 1950 (wireless communication interface 1955) to RRHs 1960. The connection interface 1957 may also be a communication module for communication in the above-described high speed lines connecting the base station device 1950 (wireless communication interface 1955) to the RRH 1960.

RRH1960 includes connection interface 1961 and wireless communication interface 1963.

Connection interface 1961 is an interface for connecting RRH1960 (wireless communication interface 1963) to base station apparatus 1950. The connection interface 1961 may also be a communication module for communication in the above-described high-speed line.

Wireless communication interface 1963 transmits and receives wireless signals via antenna 1940. Wireless communication interface 1963 may generally include, for example, RF circuitry 1964. The RF circuit 1964 may include, for example, mixers, filters, and amplifiers, and transmits and receives wireless signals via the antenna 1940. As shown in fig. 19, wireless communication interface 1963 may include a plurality of RF circuits 1964. For example, multiple RF circuits 1964 may support multiple antenna elements. Although fig. 19 shows an example in which wireless communication interface 1963 includes multiple RF circuits 1964, wireless communication interface 1963 may also include a single RF circuit 1964.

In the eNB 1930 shown in fig. 19, the communication units 220, 320, 520, 920 in the electronic devices 200, 300, 500, 900 described hereinbefore with reference to fig. 2, 3, 5, 9 may be implemented by a wireless communication interface 1963. At least a part of the functions of the generation units 210, 310, 510, 910 in the electronic devices 200, 300, 500, 900 may be implemented by the controller 1951. For example, the controller 1951 may execute the functions of the generation units 210, 310, 510, or 910 by executing instructions stored in the memory 1952 to generate interference measurement configuration information indicating a configuration of reference signals to be transmitted by a device under test within a cell in which the D2D receiver is located that multiplexes wireless communication resources with the D2D receiver. At least a part of the functions of the configuration unit 330, 530 in the electronic device 300, 500, at least a part of the functions of the determination unit 540 in the electronic device 500, and at least a part of the functions of the control unit 950 in the electronic device 900 may also be implemented by the controller 1951, which is not described herein again.

[ application example with respect to user Equipment ]

(first application example)

Fig. 20 is a block diagram showing an example of a schematic configuration of a smartphone 2000 to which the technique of the present disclosure can be applied. The smartphone 2000 includes a processor 2001, a memory 2002, a storage device 2003, an external connection interface 2004, a camera device 2006, sensors 2007, a microphone 2008, an input device 2009, a display device 2010, a speaker 2011, a wireless communication interface 2012, one or more antenna switches 2015, one or more antennas 2016, a bus 2017, a battery 2018, and an auxiliary controller 2019.

The processor 2001 may be, for example, a CPU or a system on a chip (SoC), and controls functions of an application layer and another layer of the smartphone 2000. The memory 2002 includes a RAM and a ROM, and stores data and programs executed by the processor 2001. The storage device 2003 may include a storage medium such as a semiconductor memory and a hard disk. The external connection interface 2004 is an interface for connecting an external device such as a memory card and a Universal Serial Bus (USB) device to the smartphone 2000.

The image pickup device 2006 includes an image sensor such as a Charge Coupled Device (CCD) and a Complementary Metal Oxide Semiconductor (CMOS), and generates a captured image. The sensors 2007 may include a set of sensors such as a measurement sensor, a gyro sensor, a geomagnetic sensor, and an acceleration sensor. The microphone 2008 converts sound input to the smartphone 2000 into an audio signal. The input device 2009 includes, for example, a touch sensor, a keypad, a keyboard, a button, or a switch configured to detect a touch on the screen of the display device 2010, and receives an operation or information input from a user. The display device 2010 includes a screen, such as a Liquid Crystal Display (LCD) and an Organic Light Emitting Diode (OLED) display, and displays an output image of the smartphone 2000. The speaker 2011 converts an audio signal output from the smartphone 2000 into sound.

The wireless communication interface 2012 supports any cellular communication scheme (such as LTE and LTE-advanced) and performs wireless communication. The wireless communication interface 2012 may generally include, for example, a BB processor 2013 and RF circuitry 2014. The BB processor 2013 can perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and perform various types of signal processing for wireless communication. Meanwhile, the RF circuit 2014 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive a wireless signal via the antenna 2016. The wireless communication interface 2012 may be a chip module on which the BB processor 2013 and the RF circuit 2014 are integrated. As shown in fig. 20, the wireless communication interface 2012 may include a plurality of BB processors 2013 and a plurality of RF circuits 2014. Although fig. 20 shows an example in which the wireless communication interface 2012 includes multiple BB processors 2013 and multiple RF circuits 2014, the wireless communication interface 2012 may also include a single BB processor 2013 or a single RF circuit 2014.

Further, the wireless communication interface 2012 may support another type of wireless communication scheme, such as a short-range wireless communication scheme, a near field communication scheme, and a wireless Local Area Network (LAN) scheme, in addition to the cellular communication scheme. In this case, the wireless communication interface 2012 may include the BB processor 2013 and the RF circuit 2014 for each wireless communication scheme.

Each of the antenna switches 2015 switches the connection destination of the antenna 916 among a plurality of circuits (e.g., circuits for different wireless communication schemes) included in the wireless communication interface 2012.

Each of the antennas 2016 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for transmitting and receiving wireless signals by the wireless communication interface 2012. As shown in fig. 20, the smartphone 2000 may include multiple antennas 2016. Although fig. 20 shows an example in which the smartphone 2000 includes multiple antennas 2016, the smartphone 2000 may also include a single antenna 2016.

Further, the smartphone 2000 may include an antenna 2016 for each wireless communication scheme. In this case, the antenna switch 2015 may be omitted from the configuration of the smartphone 2000.

The bus 2017 connects the processor 2001, the memory 2002, the storage device 2003, the external connection interface 2004, the image pickup device 2006, the sensor 2007, the microphone 2008, the input device 2009, the display device 2010, the speaker 2011, the wireless communication interface 2012, and the auxiliary controller 2019 to each other. The battery 2018 supplies power to the various blocks of the smartphone 2000 shown in fig. 21 via a feed line, which is partially shown in the figure as a dashed line. The supplementary controller 2019 operates the minimum necessary functions of the smartphone 2000 in, for example, a sleep mode.

In the smartphone 2000 shown in fig. 20, the communication unit 1010 in the electronic apparatus 1000 described hereinbefore with reference to fig. 10 may be implemented by a wireless communication interface 2012. At least a part of the functions of the interference measurement unit 1010 in the electronic device 1000 may be implemented by the processor 2001 or the auxiliary controller 2019. For example, the processor 2001 or the auxiliary controller 2019 may perform at least a part of the functions of the interference measurement unit 1010, such as generating an interference measurement report, by executing instructions stored in the memory 2002 or the storage 2003, the interference measurement report being obtained in the following manner: and measuring a received signal of the reference signal transmitted by the device to be tested at the D2D receiver according to the received interference measurement configuration information as interference to the D2D receiver.

(second application example)

Fig. 21 is a block diagram showing an example of a schematic configuration of a car navigation device 2120 to which the technique of the present disclosure can be applied. Car navigation device 2120 includes a processor 2121, memory 2122, a Global Positioning System (GPS) module 2124, sensors 2125, a data interface 2126, a content player 2127, a storage medium interface 2128, an input device 2129, a display device 2130, speakers 2131, a wireless communication interface 2133, one or more antenna switches 2136, one or more antennas 2137, and a battery 2138.

The processor 2121 may be, for example, a CPU or an SoC, and controls a navigation function and another function of the car navigation device 2120. The memory 2122 includes a RAM and a ROM, and stores data and programs executed by the processor 2121.

The GPS module 2124 measures the position (such as latitude, longitude, and altitude) of the car navigation device 2120 using GPS signals received from GPS satellites. The sensors 2125 may include a set of sensors, such as a gyro sensor, a geomagnetic sensor, and an air pressure sensor. The data interface 2126 is connected to, for example, the in-vehicle network 2141 via a terminal not shown, and acquires data generated by the vehicle (such as vehicle speed data).

The content player 2127 reproduces content stored in a storage medium (such as a CD and a DVD) inserted into the storage medium interface 2128. The input device 2129 includes, for example, a touch sensor, a button, or a switch configured to detect a touch on the screen of the display device 2130, and receives an operation or information input from a user. The display device 2130 includes a screen such as an LCD or OLED display, and displays an image of a navigation function or reproduced content. The speaker 2131 outputs the sound of the navigation function or the reproduced content.

The wireless communication interface 2133 supports any cellular communication schemes (such as LTE and LTE-advanced) and performs wireless communication. The wireless communication interface 2133 may generally include, for example, a BB processor 2134 and RF circuitry 2135. The BB processor 2134 may perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and perform various types of signal processing for wireless communication. Meanwhile, the RF circuit 2135 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives a wireless signal via the antenna 2137. The wireless communication interface 2133 may also be one chip module on which the BB processor 2134 and the RF circuit 2135 are integrated. As shown in fig. 21, the wireless communication interface 2133 may include a plurality of BB processors 2134 and a plurality of RF circuits 2135. Although fig. 21 shows an example in which the wireless communication interface 2133 includes a plurality of BB processors 2134 and a plurality of RF circuits 2135, the wireless communication interface 2133 may also include a single BB processor 2134 or a single RF circuit 2135.

Further, the wireless communication interface 2133 may support another type of wireless communication scheme, such as a short-range wireless communication scheme, a near field communication scheme, and a wireless LAN scheme, in addition to the cellular communication scheme. In this case, the wireless communication interface 2133 may include a BB processor 2134 and RF circuitry 2135 for each wireless communication scheme.

Each of the antenna switches 2136 switches a connection destination of the antenna 2137 among a plurality of circuits (such as circuits for different wireless communication schemes) included in the wireless communication interface 2133.

Each of the antennas 2137 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna), and is used for the wireless communication interface 2133 to transmit and receive wireless signals. As shown in fig. 21, the car navigation device 2120 may include a plurality of antennas 2137. Although fig. 21 shows an example in which the car navigation device 2120 includes the plurality of antennas 2137, the car navigation device 2120 may include a single antenna 2137.

Further, the car navigation device 2120 may include an antenna 2137 for each wireless communication scheme. In this case, the antenna switch 2136 may be omitted from the configuration of the car navigation device 2120.

The battery 2138 supplies power to the respective blocks of the car navigation device 2120 shown in fig. 21 via a feeder line, which is partially shown as a broken line in the drawing. The battery 2138 accumulates electric power supplied from the vehicle.

In the car navigation device 2120 shown in fig. 21, the communication unit 1010 in the electronic device 1000 described hereinbefore with reference to fig. 10 may be implemented by the wireless communication interface 2133. At least a portion of the functionality of the interference measurement unit 1010 in the electronic device 1000 may be implemented by the processor 2121. For example, the processor 2121 may perform at least a portion of the functions of the interference measurement unit 1010 by executing instructions stored in the memory 2122, such as generating an interference measurement report that is obtained in the following manner: and measuring a received signal of the reference signal transmitted by the device to be tested at the D2D receiver according to the received interference measurement configuration information as interference to the D2D receiver.

The techniques of this disclosure may also be implemented as an in-vehicle system (or vehicle) 2140 that includes one or more blocks of a car navigation device 2120, an in-vehicle network 2141, and a vehicle module 2142. The vehicle module 2142 generates vehicle data (such as vehicle speed, engine speed, and fault information) and outputs the generated data to the on-board network 2141.

The preferred embodiments of the present disclosure are described above with reference to the drawings, but the present disclosure is of course not limited to the above examples. Various changes and modifications within the scope of the appended claims may be made by those skilled in the art, and it should be understood that these changes and modifications naturally will fall within the technical scope of the present disclosure.

For example, the units shown in the functional block diagrams in the figures as dashed boxes each indicate that the functional unit is optional in the corresponding apparatus, and the respective optional functional units may be combined in an appropriate manner to implement the required functions.

For example, a plurality of functions included in one unit may be implemented by separate devices in the above embodiments. Alternatively, a plurality of functions implemented by a plurality of units in the above embodiments may be implemented by separate devices, respectively. In addition, one of the above functions may be implemented by a plurality of units. Needless to say, such a configuration is included in the technical scope of the present disclosure.

In this specification, the steps described in the flowcharts include not only the processing performed in time series in the described order but also the processing performed in parallel or individually without necessarily being performed in time series. Further, even in the steps processed in time series, needless to say, the order can be changed as appropriate.

Further, the present disclosure may have a configuration as described below.

(1) An electronic device, comprising:

a processing circuit configured to:

generating interference measurement configuration information indicating a configuration of a reference signal to be transmitted by a device under test in which a D2D receiver is located and the D2D receiver multiplexes wireless communication resources; and

sending interference measurement configuration information to a D2D receiver;

and receiving an interference measurement report from the D2D receiver, wherein the interference measurement report is obtained by measuring a received signal of a reference signal transmitted by the device under test at the D2D receiver according to the interference measurement configuration information to serve as interference to the D2D receiver.

(2) The electronic device according to (1) above, wherein the wireless communication resource that the D2D receiver multiplexes with the device under test includes an uplink communication resource.

(3) The electronic device according to (2) above, wherein the device under test includes an uplink cellular user equipment.

(4) The electronic device of (3) above, wherein the device under test further includes a D2D transmitter other than the D2D transmitter corresponding to the current D2D receiver.

(5) The electronic device of any of (1) to (4) above, wherein the D2D receiver and the device under test each communicate using a particular beam.

(6) The electronic device of any of (1) through (4) above, wherein the processing circuitry is further configured to: and pre-configuring the reference signal for each device to be tested in the cell.

(7) The electronic device of (1) above, wherein the processing circuitry is further configured to: the reference signals of at least a portion of the devices under test within a cell are preconfigured to occupy contiguous or concentrated time and frequency resources.

(8) The electronic device of (7) above, wherein the reference signal comprises a sounding reference signal.

(9) The electronic device according to the above (7), wherein the interference measurement configuration information includes:

specific measurement configuration information for indicating time and frequency resources of the reference signal of an expected high-interference device under test; and

and overall measurement configuration information used for indicating the union set of time and frequency resources of the reference signals of all the devices to be tested.

(10) The electronic device of (9) above, wherein the specific configuration information further indicates sequence information of the reference signal of an expected high-interference device under test.

(11) The electronic device of (9) above, wherein the received interference measurement report includes at least:

a first part to indicate whether the D2D receiver receives interference from an expected high interference device under test; and

a second part to indicate whether the D2D receiver receives interference from other devices under test than the expected high interference device under test.

(12) The electronic device of (11) above, wherein the processing circuitry is further configured to:

in the event that the second part of the received interference measurement report indicates that the D2D receiver receives interference from other devices under test than the expected high interference device under test, generating and sending to the D2D receiver additional specific measurement configuration information indicating a specific measurement configuration of the reference signal of the expected next highest interference device under test, other than the expected high interference device under test.

(13) The electronic device of (12) above, wherein the processing circuit is further configured to receive an additional interference measurement report from the D2D receiver,

wherein the additional interference measurement report comprises:

a first part for indicating whether interference is received from an expected next highest interference device under test; and

a second part for indicating whether interference is received from other devices under test than the expected high interference and next-high interference devices under test.

(14) The electronic device of (9) above, wherein the processing circuitry is further configured to: and determining the expected high-interference device to be tested based on the position information of the D2D receiver and the position information of the device to be tested in the cell.

(15) The electronic device of (14) above, wherein the processing circuitry is further configured to: and in the case that the distance between the D2D receiver and the device under test is less than a preset threshold value, determining the device under test as an expected high-interference device under test.

(16) The electronic device of (14) above, wherein the D2D receiver and the device under test each communicate using a particular beam, and wherein the processing circuitry is further configured to:

and under the condition that the receiving wave beam of the D2D receiver covers the position of the device to be tested and/or the transmitting wave beam of the device to be tested covers the position of the D2D receiver, determining the device to be tested as the expected high-interference device to be tested.

(17) The electronic device according to the above (4), wherein the interference measurement configuration information includes:

D2D measurement configuration information indicating time and frequency resources of the reference signal of a D2D transmitter in a device under test; and

overall measurement configuration information indicating a union of time and frequency resources of the reference signals of all cellular user equipments in a device under test.

(18) The electronic device according to the above (17), wherein the interference measurement configuration information further includes:

specific measurement configuration information for indicating time and frequency resources of said reference signal of an intended high interference cellular user equipment.

(19) The electronic device of (18) above, wherein the reference signal of the D2D transmitter in the device under test comprises a channel state information reference signal or a demodulation reference signal, and the reference signal of the cellular user equipment in the device under test comprises a sounding reference signal.

(20) The electronic device of (1) above, wherein the processing circuitry is further configured to:

and scheduling or power control is carried out on the D2D receiver and/or the device under test according to the interference measurement report received from the D2D receiver so as to reduce the interference of the device under test on the D2D receiver.

(21) An electronic device, comprising:

a processing circuit configured to:

receiving interference measurement configuration information from a base station, wherein the interference measurement configuration information indicates the configuration of a reference signal to be transmitted by a device to be tested in a cell in which a D2D receiver is located and which multiplexes wireless communication resources with the D2D receiver;

according to the received interference measurement configuration information, measuring a received signal of a reference signal sent by the device to be measured at the D2D receiver as interference to the D2D receiver to obtain an interference measurement report; and

an interference measurement report is sent to the base station.

(22) The electronic device of (21) above, wherein the D2D receiver multiplexes uplink communication resources with the device under test.

(23) The electronic device of (22) above, wherein the device under test comprises an uplink cellular user equipment.

(24) The electronic device of (23) above, wherein the device under test further comprises a D2D transmitter in addition to the D2D transmitter corresponding to the current D2D receiver.

(25) The electronic device of any of (21) to (24) above, wherein the D2D receiver and the device under test each communicate using a particular beam.

(26) The electronic device of any of (21) to (24) above, wherein the reference signal comprises a sounding reference signal.

(27) The electronic device of any of (21) to (24) above, wherein the received interference measurement configuration information includes:

specific measurement configuration information for indicating time and frequency resources of the reference signal of an expected high-interference device under test; and

and overall measurement configuration information used for indicating the union set of time and frequency resources of the reference signals of all the devices to be tested.

(28) The electronic device of (27) above, wherein the specific configuration information further indicates sequence information of the reference signal of the expected high-interference device under test.

(29) The electronic device of (27) above, wherein the processing circuitry is further configured to:

measuring a received signal of the reference signal of the high-interference device to be tested at the D2D receiver according to the received specific measurement configuration information, wherein the received signal is used as the interference of the high-interference device to be tested on the D2D receiver; and

and measuring the received signals of the reference signals of all the devices to be tested at the D2D receiver according to the received overall measurement configuration information, wherein the received signals are taken as the overall interference of all the devices to be tested on the D2D receiver.

(30) The electronic device of (29) above, wherein the processing circuitry is further configured to:

and determining the interference of the devices to be tested except the high-interference devices to be tested on the D2D receiver based on the measured interference of the high-interference devices to be tested and the overall interference of all the devices to be tested.

(31) The electronic device of (30) above, wherein the processing circuitry is further configured to:

when the measured interference of the high-interference device to be tested is larger than a first threshold value, determining that the D2D receiver receives the interference from the high-interference device to be tested; and

when the determined interference of the other devices to be tested except the high-interference device to be tested is larger than the second threshold value, determining that the D2D receiver receives interference from the other devices to be tested except the high-interference device to be tested.

(32) The electronic device of (31) above, wherein the interference measurement report includes at least:

a first part to indicate whether the D2D receiver receives interference from an expected high interference device under test; and

a second part to indicate whether the D2D receiver receives interference from other devices under test than the expected high interference device under test.

(33) The electronic device of (32) above, wherein the processing circuitry is further configured to:

in the event that the second part of the interference measurement report indicates that the D2D receiver receives interference from other devices under test other than the expected high interference device under test, additional specific measurement configuration information is received from the base station indicating time and frequency resources of the reference signal of the expected next highest interference device under test other than the expected high interference device under test.

(34) The electronic device of (33) above, wherein the processing circuitry is further configured to:

measuring a received signal of the reference signal of the secondary high-interference device under test at the D2D receiver according to the received additional specific measurement configuration information, as the interference of the secondary high-interference device under test on the D2D receiver; and

and determining the interference of the devices to be tested except the high-interference and second-highest-interference devices to be tested on the D2D receiver based on the measured interference of the high-interference devices to be tested, the interference of the second-highest-interference devices to be tested and the overall interference of all the devices to be tested.

(35) The electronic device of (34) above, wherein the processing circuitry is further configured to:

when the measured interference of the device to be tested with the second highest interference is larger than the first threshold value, determining that the D2D receiver receives the interference from the device to be tested with the second highest interference; and

and when the determined interference of the other devices to be tested except the high-interference and second-highest-interference devices to be tested is larger than the second threshold value, determining that the D2D receiver receives interference from the other devices to be tested except the high-interference and second-highest-interference devices to be tested.

(36) The electronic device of (35) above, wherein the processing circuit is further configured to transmit an additional interference measurement report to the base station,

wherein the additional interference measurement report comprises:

a first part for indicating whether interference is received from an expected next highest interference device under test; and

a second part for indicating whether interference is received from other devices under test than the expected high interference and next-high interference devices under test.

(37) The electronic device of (24) above, wherein the received interference measurement configuration information includes:

D2D measurement configuration information indicating time and frequency resources of the reference signal of a D2D transmitter in a device under test; and

overall measurement configuration information indicating a union of time and frequency resources of the reference signals of all cellular user equipments in a device under test.

(38) The electronic device of (37) above, wherein the processing circuitry is further configured to:

measuring a received signal of the reference signal of the D2D transmitter in the device under test at the current D2D receiver according to the received D2D measurement configuration information as interference of the D2D transmitter in the device under test on the current D2D receiver; and

measuring, according to the received overall measurement configuration information, received signals of the reference signals of all cellular user equipments in the device under test at the current D2D receiver as an overall interference of all cellular user equipments in the device under test to the current D2D receiver.

(39) The electronic device of (37) above, wherein the reference signal of the D2D transmitter in the device under test comprises a channel state information reference signal or a demodulation reference signal, and the reference signal of the cellular user equipment in the device under test comprises a sounding reference signal.

(40) The electronic device of (21) above, wherein the processing circuitry is further configured to:

and measuring the receiving power of the reference signal of the device to be measured at the D2D receiver according to the received measurement configuration information, wherein the receiving power is used as an index of the interference of the device to be measured on the D2D receiver.

(41) The electronic device of (40) above, wherein the processing circuitry is further configured to:

when the measured received power of the received signal of the reference signal is greater than the power threshold, it is determined that the D2D receiver receives interference from the corresponding device under test.

(42) The electronic device of (41) above, wherein the processing circuitry is further configured to: the power threshold is configured based on the received power of the D2D receiver for the D2D signal and the noise power at the D2D receiver.

(43) A method for wireless communication, comprising:

sending interference measurement configuration information to a D2D receiver, wherein the interference measurement configuration information indicates the configuration of a reference signal to be sent by a device to be tested in a cell where the D2D receiver is located and the D2D receiver multiplexes wireless communication resources; and

and receiving an interference measurement report from the D2D receiver, wherein the interference measurement report is obtained by measuring a received signal of a reference signal transmitted by the device under test at the D2D receiver according to the interference measurement configuration information to serve as interference to the D2D receiver.

(44) A method for wireless communication, comprising:

receiving interference measurement configuration information from a base station, wherein the interference measurement configuration information indicates the configuration of a reference signal to be transmitted by a device to be tested in a cell in which a D2D receiver is located and which multiplexes wireless communication resources with the D2D receiver;

according to the received interference measurement configuration information, measuring a received signal of a reference signal sent by the device to be measured at the D2D receiver as interference to the D2D receiver to obtain an interference measurement report; and

an interference measurement report is sent to the base station.

(45) A non-transitory computer-readable storage medium storing a program which, when executed by a processor, causes the processor to perform the method according to (43) or (44) above.

Although the embodiments of the present disclosure have been described in detail with reference to the accompanying drawings, it should be understood that the above-described embodiments are merely illustrative of the present disclosure and do not constitute a limitation of the present disclosure. It will be apparent to those skilled in the art that various modifications and variations can be made in the above-described embodiments without departing from the spirit and scope of the disclosure. Accordingly, the scope of the disclosure is to be defined only by the claims appended hereto, and by their equivalents.