Measurement reporting in a wireless access network for MU-MIMO operation
阅读说明：本技术 用于mu-mimo操作的无线接入网络中的测量报告 (Measurement reporting in a wireless access network for MU-MIMO operation ) 是由 F·阿特莱 A·尼尔松 S·法克斯埃尔 于 2017-06-16 设计创作，主要内容包括：公开了一种操作无线接入网络中的通知无线电节点(10、100)的方法。该方法包括发送波束接收信息,该波束接收信息是基于对波束集中的波束执行的测量。波束接收信息指示波束集中的一个或多个波束属于波束集的第一子集,第一子集包括弱接收的波束。本公开还涉及相关的设备和方法。(A method of operating a notification radio node (10, 100) in a wireless access network is disclosed . the method includes transmitting beam reception information that is based on measurements performed on beams in a beam set. the beam reception information indicates that or more beams in the beam set belong to a subset of the beam set, the subset including weakly received beams.)
A method of operating a notification radio node (10, 100) in a wireless access network, the method comprising transmitting beam reception information, the beam reception information being based on measurements performed on beams in a beam set, wherein the beam reception information indicates that or more beams in the beam set belong to a subset of the beam set, the subset comprising weakly received beams.
A notifying radio node (10, 100) for a wireless access network, the notifying radio node (10, 100) being adapted to transmit beam reception information, the beam reception information being based on measurements performed on a set of beams, wherein the beam reception information indicates that or more beams of the set of beams belong to a subset of the set of beams, the subset comprising weakly received beams.
3, a method of operating a configured radio node (10, 100) in a wireless access network, the method comprising configuring a second radio node for transmitting beam reception information, the beam reception information relating to a beam set, wherein the beam reception information indicates or more beams of the beam set belong to a subset of the beam set, the subset comprising weakly received beams.
A configuring radio node (10, 100) for a wireless access network, the configuring radio node (10, 100) being adapted to configure a second radio node (10, 100) for transmitting beam reception information, the beam reception information relating to a beam set, wherein the beam reception information indicates that or more beams of the beam set belong to a subset of the beam set, the subset comprising weakly received beams.
5. The method or apparatus of any of the preceding claims, wherein a beam is indicated as belonging to the subset based on reception strength and/or quality.
6. The method or apparatus of any of the preceding claims, wherein the subset includes or more beams.
7. The method or apparatus of any of the preceding claims, wherein beams are transmitted using different antenna arrangements.
8. The method or apparatus of any of the preceding claims, wherein the beam reception information indicates that or more beams of the set belong to a second subset of strongly received beams, the second subset including or more beams.
9. The method or device of any of the preceding claims, wherein the beam is indicated as belonging to the subset and/or a second subset based on a threshold.
10. The method or apparatus of any of the preceding claims, wherein the beam is identified or identifiable by a beam identity indication, in particular by reference signaling and/or a signaling pattern.
11. The method or device of any of the preceding claims, wherein the beam reception information indicates that N beams belong to the subset, and optionally indicates that M beams belong to a second subset.
12. The method or apparatus of any of the preceding claims, wherein the beam set is configured.
13. The method or apparatus of any of the preceding claims, wherein the beam reception information is provided in a measurement report.
Program product of , comprising instructions to cause a processing circuit to control and/or perform a method according to any of claims 1, 3 or 5 to 13.
15, carrier medium means carrying and/or storing the program product of claim 14.
Technical Field
The present disclosure relates to wireless communication technology, in particular to wireless communication technology in a Radio Access Network (RAN), for example in the context of multi-antenna technology and/or MU-MIMO (multi-user multiple input multiple output).
Background
In modern wireless communication technology, beam forming is an increasingly important method of providing efficient communication even in systems with a large number of devices communicating simultaneously, in order to perform beam forming, a number of antenna elements (or radiators) in an antenna arrangement are used to provide a radiation beam, e.g. within a desired angle or range of angles, instead of providing radiation that is (substantially) emitted isotropically.
With current approaches, management of beams in a radio access network (beam management) can be inefficient, particularly in terms of interference between beams.
Disclosure of Invention
It is an object of the present disclosure to provide a method that facilitates improved beam management, in particular improved information signaling. These methods are particularly advantageously implemented in fifth generation (5G) communication networks or 5G radio access technologies or networks (RAT/RAN), in particular according to 3GPP (third generation partnership project, standardization organization). A suitable RAN may in particular be a RAN according to NR, e.g. release 15 or higher, or LTE evolution.
Accordingly, methods of operating a notification radio node in a wireless access network are disclosed.A method includes transmitting beam reception information, the beam reception information being based on measurements performed on beams in a beam set.the beam reception information indicates or more beams in the beam set belong to a subset of the beam set, the subset including weakly received beams.
Additionally, informing radio nodes for a wireless access network are described, the informing radio nodes being adapted to transmit beam reception information, the beam reception information being based on measurements performed on a set of beams, the beam reception information indicating that or more beams of the set of beams belong to the th subset of the set of beams, the th subset comprising weakly received beams.
The informing radio node may be a radio node as described herein, in particular a User Equipment (UE) or a terminal however, in embodiments, the radio node may be a network node.
Generally, the transmission of beam reception information indicating the th subset may depend on the size of the th subset whether to transmit the beam reception information may depend on the number of beams in the th subset, for example, particularly if a beam is associated with the th subset, which th subset is based on whether the reception strength of the beam reaches a threshold.
It may be considered methods of operating a configured radio node in a wireless access network the method comprises configuring a second radio node for transmitting beam reception information, the beam reception information relating to a beam set the beam reception information indicates that or more beams of the beam set belong to a subset of the beam set, the subset comprising weakly received beams.
The beam reception information relates to a beam set, wherein the beam reception information indicates that or more beams of the beam set belong to a th subset of the beam set, the th subset comprising weakly received beams.
The configuring radio node may be a radio node, in particular a network node, as described herein however, in embodiments, the configuring radio node may be a user equipment or a terminal.
The method may comprise beam scheduling for transmissions to a group of radio nodes based on beam reception information, wherein the beam reception information may be as disclosed herein, additionally, scheduling radio nodes for a wireless access network may be considered, scheduling radio nodes may be adapted to beam schedule for transmissions to the group of radio nodes based on the beam reception information, wherein the beam reception information may be as disclosed herein, beam scheduling may be based in particular on beam reception information received from or more radio nodes in the group, in particular received from all radio nodes in the group, scheduling radio nodes may be configured as described herein, and/or the method may comprise configuring radio nodes as described herein, the group of radio nodes may comprise and/or be comprised of notifying radio nodes as described herein, and/or may be scheduled with a transceiver module(s) in a second radio node, which may be adapted to transmit and/or receive a beam in a second radio node group, which may be scheduled with a second radio node, which may be scheduled with a beam, which may be scheduled with a second radio node, or may be scheduled with a second radio node, which may be scheduled, and/or may be scheduled with a second radio node, which may be scheduled with a second radio node, and/or may be scheduled with a second radio node, which may be scheduled with a different radio node, which may be scheduled, or may be scheduled, which may be scheduled, or may be scheduled, which may be scheduled with a second radio node, which may be scheduled, and/or may be scheduled, or may be scheduled with a second radio node, and/or may be scheduled with a second radio node, which may be scheduled, or may be scheduled with a transmission time, which may be scheduled, in a second radio node, or.
The beam reception information may be seen as indicating a reception strength of a beam received by the informing radio node providing the information, wherein the strength may be represented e.g. by a power and/or an energy and/or a corresponding density and/or amplitude of the received signal. It can be considered that due to the directionality of the beams, the interference between the beams can be estimated based on their respective reception strengths for different notification nodes.
It should be noted that a beam typically does not follow an ideal spatial distribution and may even be received out of the beam due to spillover and/or successive drop off, as its edges (in the spatial distribution) may be smeared out (smearout), but it is assumed that a beam structure containing a major part of the energy or power of the beam is still useful.
The transmission of the beam may comprise beamforming, which may depend on the digital scheme (numerology) used. The digital scheme may be configured or configurable to the notifying radio node.
The radio node configured for transmitting the beam reception information may comprise transmitting control signaling indicating the configuration, e.g. physical layer control signaling, such as downlink or sidechain control signaling, in particular DCI or SCI, and/or higher layer signaling, e.g. RRC (radio resource control) signaling or MAC (medium access control) signaling.
An antenna arrangement may include or multiple antenna elements (radiating elements) which may be combined in an antenna array the antenna array or sub-array may include antenna elements or multiple antenna elements which may be arranged, for example, in two dimensions (e.g., planar) or three dimensions it may be considered that each antenna array or sub-array or element is individually controllable, respectively the different antenna arrays may be controlled independently of each other a single antenna element/radiator may be considered a minimum example of a sub-array examples of an antenna array include or multiple multi-antenna panels or or multiple individually controllable antenna elements an antenna arrangement may include multiple antenna arrays an antenna arrangement may be considered to be associated with a (specific and/or single) radio node (e.g., configuring a radio node, or informing a radio node, or scheduling radio node) to be controlled or controllable, for example by a radio node, an antenna arrangement associated with a UE or terminal may be considered to be smaller (e.g., in size and/or number of antenna elements or array) than an antenna arrangement associated with a network node, may be considered to be a separate antenna arrangement or may be a configurable to be a digital beam forming, or may be considered to be a separate antenna arrangement, or a digital beam forming, may be considered to be a digital beam forming, or a signal may be a signal, may be considered to be a separate antenna arrangement, or a transmit a digital beam forming, or a signal, may be considered to be a separate beam forming, a signal, or a signal, may be considered to be a signal, a signal forming, or a signal forming, a signal forming, a signal forming, a.
In variations, the beam reception information may indicate that or more beams in the set belong to a second subset of strong reception beams, which may include or more beams.
It may be considered to indicate that the beam belongs to the th subset and/or the second subset based on a threshold.
In general, a weakly received beam may be considered weakly received compared to or more other beams in the set, and/or compared to a () threshold, which may be predefined or configured or configurable.similarly, a strongly received beam may be considered strongly received compared to or more other beams in the set, and/or compared to a (second) threshold, which may be predefined or configured or configurable.a second threshold may be the same as the threshold.
It can be considered that a beam is identified or identifiable by a beam identity indication, in particular a reference signaling and/or a signaling pattern (pattern). The reference signaling may be, for example, beam and/or receiver (e.g., UE) specific. Examples of the reference signaling may include CSI-RS (channel state information reference signaling) or phase reference signaling or beam reference signaling. The signaling pattern may be a resource and/or modulation pattern, e.g., a time/frequency or code pattern.
The beam reception information may indicate that the N beams belong to the th subset, and optionally that the M beams belong to the second subset.
The beam sets may be transmitted in specific resources, e.g., time/frequency resources. The sets of beams may be on the same resource or on different resources, in particular at different times or different frequency ranges. The beam may be beam-shaped, for example, with an antenna arrangement such as an array or a plurality of sub-arrays. In general, a beam may be associated with and/or configured for an antenna port. Different beams may be associated with different antenna ports. A beam, in particular a beam scheduled by a scheduling radio node, may be a beam in a beam pair link, which may comprise the beam and a beam provided or formed by a receiving node (e.g. a notification radio node), which may be a transmit beam (e.g. to enable bidirectional communication) or a receive beam (formed to improve/focus reception of the incident beam/scheduling beam). It should be noted that the beam in the beam set on which the informing radio node measures may be a scheduling beam, which may be scheduled based on an earlier transmitted beam.
The beam set may be configured, for example, by configuring the radio node. Alternatively or additionally, the measurements to be performed may be configured, for example by configuring the radio node.
The measurements may include sampling received signaling (e.g., from beams or multiple beams) and/or processing based on such sampling, e.g., to distinguish between different beams, particularly beam identification indications.
The beam reception information may be provided in a measurement report or in a measurement reporting (reporting), and/or based on or more measurement reports such reports or reports may indicate the subset and/or represent beams in the subset, and optionally represent beams in the second subset.
Generally, beam scheduling may include selecting a beam (respectively, form thereof) from a beam set for a receiver (e.g., a notifying radio node) to make a further transmission, e.g., based on beam reception information related to earlier transmissions of the beam set.
A beam may be considered to be characterized by its transmission angle (e.g., solid or spatial angle) and/or direction and/or beamwidth (in or two dimensions), and/or phase and/or amplitude and/or gain (e.g., for controlling an associated antenna array), and/or antenna array or sub-array and/or spatial distribution of transmitted radiation (or radiation distribution selected for reception for a receive beam) and/or lobe arrangement (in space), and/or precoder and/or port.
The radio nodes, e.g. the configuring radio node or the scheduling radio node, may transmit beams in a set of beams and may configure the set and/or associated measurements to or more notifying radio nodes the notifying radio nodes may indicate a subset (it should be noted that the set may be different or the same for different notifying radio nodes) and/or a second subset, respectively, of the set.
The beam reception information indicating the th subset may for example sequentially indicate or more of the weakest received beams in the beam set and/or indicate those beams below ( th) threshold the beam reception information may alternatively or additionally indicate received power or energy, e.g. SSI and/or RSSI and/or RSRP and/or CRI (CSI-RS resource indicator), and/or channel quality, e.g. ratio (e.g. SINR, SNR, SIR) and/or channel quality information like CQI or CSI (channel state information) like .
The beam reception information for the th subset may be configured to be transmitted simultaneously with the beam reception information for the second subset and/or at the same report and/or same transmission timing structure, or differently, for example, the beam reception information for the th subset may be configured to be transmitted less frequently than the beam reception information for the second subset.
Furthermore, program products comprising instructions for causing a processing circuit to control and/or perform the methods described herein are disclosed.
Also discussed is a carrier medium device carrying and/or storing the program product as described herein.
The approach described herein allows for improved information usage, particularly in beamforming, which may enable, for example, scheduling of multiple beams with less interference.
Drawings
The drawings are provided to illustrate the concepts and methods described herein and are not intended to limit their scope.
The drawings comprise:
fig. 1, which shows an exemplary antenna sub-array in the form of a panel;
fig. 2, which shows a set of beams provided by a radio node, which may be measured by a UE;
fig. 3, which illustrates an exemplary beam set and UE arranged at different locations, and exemplary beam reception information provided by the UE for the beam set;
figure 4, which shows an exemplary radio node implemented as a user equipment or terminal; and
fig. 5, which shows an exemplary radio node, e.g. a gbb or eNB, implemented as a network node.
Detailed Description
In the following, exemplary scenarios are discussed in which a network node such as a gNB may operate as a configuring and/or scheduling radio node, and or more UEs may be considered as notifying radio nodes.
The widely varying requirements of the next generation mobile communication system (5G) mean that frequency bands at many different carrier frequencies will be required, for example, low frequency bands will be required to achieve adequate coverage, and higher frequency bands (e.g., mmW, i.e., around and above 30 GHz) will be required to achieve the required capacity.
Different implementations of beamforming can be considered at both the gNB and the UE: analog beamforming, digital beamforming, and hybrid beamforming. Each implementation has its advantages and disadvantages. Digital beamforming is the most flexible solution, but is also the most expensive solution due to the large number of radio and baseband chains (and/or ADCs) required. Analog beamforming is the least flexible but cheaper to manufacture due to the reduced number of radios and baseband chains (which may be considered as radio and/or antenna circuits).
Hybrid beamforming is a compromise between analog and digital beamforming. type of hybrid beamforming antenna architecture is an antenna panel.A panel is a rectangular antenna array of dual polarized elements (radiators or antenna elements) that may include transmit/receive units (TXRUs) on each polarization, which may be independently controllable.an analog distribution network with phase shifters may be used to steer (stee) the beams of each panel.multiple panels may be stacked adjacent to each other and digital precoding may be performed across the panels.FIG. 1 shows two examples (a left two-dimensional panel and a right -dimensional panel) each with two panels, where each panel is connected to TXRUs on each polarization.
The objective of beam management is to discover and maintain Beam Pair Links (BPLs). in the example of fig. 2, BPLs have been discovered and maintained by the network.
The gNB may configure the UE to measure a set of beamformed CSI-RSs transmitted by the gNB. The UE measures Reference Signal Received Power (RSRP) and indicates a preferred gNBTX beam by reporting CSI-RS resource indicator (CRI) and/or its RSRP related to the gNB. The UE may report M optimal CRIs and RSRPs, where M ≧ 1, which may be considered an element in the second subset of strongly received beams. Furthermore, CSI-RS transmissions with a given gNB beam may be repeated to allow the UE to evaluate the appropriate UE rx beam. SS blocks may be used for beam management because they may be beamformed and may be considered for use as beam identification indications.
Multi-user MIMO (MU-MIMO) is expected to become a key technology component of 5G the purpose of MU-MIMO is to serve multiple UEs simultaneously on the same time, frequency and code resources, thereby increasing the capacity of the system if the gNB has multiple panels, it can perform MU-MIMO transmission, for example, by transmitting from each panel to UEs or by applying different precoders across the panels to different UEs.
In order to achieve significant capacity gains with MU-MIMO, it is important to ensure low interference between co-scheduled UEs (beams for UEs, respectively.) this can be achieved by making accurate CSI (channel state information, as a form of beam reception information) available at the transmitter to facilitate interference nulling in precoding, and/or by co-scheduling UEs that are already close to orthogonal channels-an example of the latter is if two UEs are in line of sight and their angular separation is greater than the beam width of a panel.
When MU-MIMO is used in conjunction with beam management for the antenna panel, the CRI and RSRP reports of the M optimal gNB TX beams provide only information on how times to select a gNB TX beam for a single UE.
It can be said that the UE should also report the N (where N ≧ 1) CRI with the lowest RSRP to the gNB to indicate a subset of weak receive beams, e.g., because it is configured accordingly. Optionally, it may also report the corresponding RSRP value. This would provide useful information for the gNB to make cooperative scheduling decisions in MU-MIMO transmissions.
The methods described herein provide increased capacity due to reduced inter-user interference in MU-MIMO transmissions. This may be facilitated by providing more information to the gbb to make collaborative scheduling decisions.
It should also be considered to configure with configuration messages from the gNB, for example, so that the UE should also report to the gNB the N CRIs with the lowest RSRP (where N ≧ 1). Thus, a subset of the weak receive beams (in this case, the weakest receive beam) is indicated. Alternatively or additionally, it may be configured to report a CRI with a received signal strength (e.g. as indicated by RSRP) below a threshold, where the threshold may be determined by the network or the UE, and/or may be configured or configurable or predefined. Optionally, the P lowest RSRP values may also be reported, where P ≦ N. Thus, in these examples, the beam reception information may be represented by CRI and/or RSRP, which may be sent in a measurement report.
The CSI report settings may then be dynamically triggered in the DCI for aperiodic CSI reporting or it may be configured periodically by RRC.
The proposed report is very valuable for the gNB, especially for the gNB used for user pairing in MU-MIMO scheduling fig. 3 shows very simple examples it can be assumed that there are four UEs, i.e. UE1, … …, UE4, and that the gNB wants to schedule two UE. in coordination for MU-MIMO transmission-furthermore, the gNB has four TX beams (forming a set of beams), denoted B1, … …, B4 in the figure, with corresponding CRI: CRI1, … …,
The table shows the best and worst reported CRI for each UE, where best means the highest CSI-RSRP, which indicates the strongest reception strength, and worst means the lowest CSI-RSRP, which indicates the weakest reception strength. It should be noted that not all UEs may have to receive or be able to detect all beams.
For example, the gNB may schedule UE1 and UE2 in coordination and transmit with beams B1 and B2. however, B2 will produce high interference to UE1 and vice versa in accordance with the proposed reports, the gNB may instead schedule UE1 and UE4 by also considering worst reported beams, since UE4 will only receive weak interference from beam B1 and vice versa, depending on the proposed reports.
More generally, the gNB can prioritize the co-scheduling hypothesis using the proposed reporting, for which the CRIs of of the UEs lie in a "bad" CRI set of other UEs, etc.
For example, the RSRP threshold may be relative to the RSRP of the optimal reporting/receiving beam, so if the RSRP of the optimal beam is x dB and the threshold is y dB, the UE should report all beams using RSRP less than x-y dB.
Since the weaker direction of the channel is expected to change on a slower basis, the reporting of the beam with the weakest reception strength (e.g. with the lowest RSRP), indicated as the beam belonging to the th subset, may in some variants be triggered with a lower periodicity than the reporting of the strongest reception/CRI with the highest RSRP, and/or the th subset and the second subset may be reported independently of each other, e.g. in different messages and/or in different times or periods.
In another variation, only the number of CRIs with an RSRP lower than a threshold relative to a preferred CRI is fed back in the CSI report this information may give the gNB an indication of whether MU-MIMO scheduling would likely be beneficial.
It is contemplated that the UE should be configured with a configuration message from the gNB, for example, that N CRIs with the lowest RSRP in the gNB TX beam sweep should be reported, where N ≧ 1. Optionally, the UE should also report the corresponding CSI-RSRP value. Alternatively, the UE should report a CRI with an RSRP value below a threshold.
Alternatively or additionally, if the number of CRIs with RSRP below a threshold relative to a preferred CRI is greater than a preconfigured number M, then the number may be considered to be reported in the CSI report, otherwise the CRI itself is reported. CSI reports may be seen as examples of indicating beam reception information, in particular as measurement reports of separate control signaling.
Fig. 4 schematically illustrates a radio node, in particular a terminal or a
Fig. 5 schematically illustrates a
The transmission timing structure may represent time intervals which may cover or more symbols the examples of transmission timing structures are subframes, slots and minislots the slots may comprise a predetermined, e.g. a predefined and/or configured or configurable number of symbols, e.g. 6 or 7, or 12 or 14 the minislots may comprise a number of symbols which is smaller than the number of symbols of a slot (which may be configurable or configured, among others), in particular 1, 2, 3 or 4 symbols the transmission timing structure may cover a time interval of a certain length which may depend on the symbol time length and/or the cyclic prefix used.
Generally program products are contemplated that include instructions adapted to cause processing and/or control circuitry to perform and/or control any of the methods described herein, particularly when executed on processing and/or control circuitry carrier medium means that carry and/or store a program product as described herein are also contemplated.
The carrier medium means may comprise or more carrier media generally, the carrier media may be accessible and/or readable and/or receivable by a processing or control circuit the stored data and/or program product and/or code may be viewed as portions that carry the data and/or program product and/or code the carrier media may generally comprise a guide/transmission medium and/or storage medium the guide/transmission medium may be adapted to carry and/or store signals, particularly electromagnetic and/or electrical and/or magnetic and/or optical signals, the carrier media, particularly guide/transmission medium, may be adapted to guide such signals to carry them, the carrier media, particularly guide/transmission medium, may comprise an electromagnetic field, such as radio or microwave, and/or optically transparent material, such as glass fiber and/or cable the storage media may comprise at least of the following, memories that may be volatile or non-volatile, buffers, high speed, optical disks, magnetic memories, flash memories, etc.
In general, the number scheme and/or subcarrier spacing may indicate the bandwidth of the subcarriers of a carrier (in the frequency domain), and/or the number of subcarriers in a carrier.
The signaling may generally include or more symbols and/or signals and/or messages.A signal may include or more bits.an indication may represent signaling and/or may be implemented as or more signals. or more signals may be included in and/or represented by a message.signaling, particularly control signaling, may include multiple signals and/or messages that may be transmitted on different carriers and/or associated with different signaling processes, such as representing and/or relating to or more such processes and/or corresponding information.
The downlink signaling may be, inter alia, OFDMA (orthogonal frequency division multiple access) signaling or SC-FDMA (single carrier frequency division multiple access) signaling, however, the signaling is not so limited (filterbank-based signaling may be considered alternatives).
A radio node may generally be considered to be a device or node adapted for wireless and/or radio (and/or microwave) frequency communication according to a communication standard and/or communication using an air interface.
The radio node may be a network node, or a user equipment or a terminal. The network node may be any radio node of a wireless communication network, such as a radio base station and/or a gsdeb (gnb) and/or an enodeb (enb) and/or a relay node and/or a micro/femto/pico/femto node and/or other nodes, in particular for a RAN as described herein.
In the context of the present disclosure, the terms wireless device, User Equipment (UE) and terminal may be considered interchangeable. A wireless device, user equipment or terminal may represent a terminal device for communicating with a wireless communication network and/or implemented as user equipment according to a standard. Examples of user equipment may include a phone, e.g. a smartphone, a personal communication device, a mobile phone or terminal, a computer, in particular a laptop, a sensor or a machine with radio functionality (and/or adapted for an air interface), in particular for MTC (machine type communication, sometimes also referred to as M2M, machine to machine) or a vehicle adapted for wireless communication. The user equipment or terminal may be mobile or fixed.
The radio node may generally comprise a processing circuit which may comprise or more processors and/or controllers (e.g. microcontrollers) and/or ASICs (application specific integrated circuits) and/or FPGAs (field programmable arrays), etc. the processing circuit may be considered to comprise and/or be (operatively) connected or connectable to or more memories or memory devices, the memory devices may comprise or more memories, the memories may be adapted to store digital information, examples of memories include volatile and non-volatile memories, and/or Random Access Memories (RAM), and/or Read Only Memories (ROM), and/or magnetic and/or optical memories, and/or flash memories, and/or hard disk memories, and/or EPROM or EEPROM (erasable programmable ROM or electrically erasable programmable ROM), the radio circuit may comprise or more transmitters and/or receivers and/or transceivers may operate as transmitters and/or receivers, and/or may comprise a plurality of antennas or transmitters and/or receivers, such as a transmitter and/or receiver, may comprise a transmitter and/or a receiver circuit which may comprise a plurality of antennas, for example, a transmitter and/or a receiver, may comprise a transmitter and/or a receiver, a transmitter and/or a receiver, may comprise a transmitter and/or a receiver, a transmitter and/or a separate circuit which may comprise, for example, a transmitter and/or a transmitter and.
The program product described herein may include modules related to a device on which the program product is intended to be executed (e.g., a user equipment or a network node), the execution of which may be performed on associated circuitry.
The radio access network may be a wireless communication network and/or a Radio Access Network (RAN), in particular according to a communication standard. The communication standard may in particular be a standard according to 3GPP and/or 5G, e.g. evolved according to NR or LTE, in particular LTE.
The methods described herein are particularly applicable to 5G networks, such as LTE evolution and/or NR (New radio) respectively successors thereof.
The transmissions in the downlink may relate to transmissions from the network or network node to the terminals, the transmissions in the uplink may relate to transmissions from the terminals to the network or network node, the transmissions in the sidelink may relate to (direct) transmissions from terminals to another terminal.
The signaling may typically comprise or more signals and/or or more symbols control information or control information messages or corresponding signaling (control signaling) may be sent on a control channel, e.g., a physical control channel, which may be a downlink channel or (or in some cases a sidelink channel, e.g., UEs scheduling another UEs.) for example, the control information/allocation information may be signaled by the network node on a PDCCH (physical downlink control channel) and/or PDSCH (physical downlink shared channel) and/or HARQ specific channel.
The transmission beam may comprise sending signalling, in particular control signalling, e.g. transmission signalling comprising or representing acknowledgement signalling and/or resource request information, which may comprise coding and/or modulation. The encoding and/or modulation may include error correction coding and/or forward error correction coding and/or scrambling. Receiving the control signaling may include corresponding decoding and/or demodulation. A beam may indicate the spatial and/or angular distribution of signaling or transmissions using the beam.
The transmitted beam reception information and/or signaling for configuring the node may be considered as a form of control signaling. The beam reception information transmitted by the UE or terminal may be considered, for example, as measurement reports and/or uplink control information, in particular UCI.
The explicit indication may be based, for example, on a parameterization having or more parameters, and/or or more indices, and/or or more bit patterns representing information.
The resource elements may generally describe the smallest individually available and/or encodable and/or decodable and/or modulatable and/or demodulated time-frequency resources, and/or may describe time-frequency resources that cover symbol time lengths in time and carriers in frequency.a signal may be allocable and/or allocated to a resource element.a subcarrier may be a subband of a carrier, e.g., as defined by a standard.a carrier may define a frequency and/or frequency band for transmission and/or reception.in some variations , a signal (joint encoding/modulation) may cover more than resource elements.
The resources may generally represent time-frequency and/or code resources on which signaling may be communicated, e.g., transmitted and/or received, and/or intended for transmission and/or reception, e.g., according to a particular format.
The boundary symbol may generally represent a start symbol for transmission or an end symbol for reception. The start symbol may particularly be a start symbol for uplink or sidelink signaling, e.g. control signaling or data signaling. Such signaling may be on a data channel or a control channel, e.g. a physical channel, in particular a physical uplink shared channel (e.g. PUSCH) or a sidelink data or shared channel, or a physical uplink control channel (e.g. PUCCH) or a sidelink control channel. If the starting symbol is associated with control signaling (e.g., on a control channel), the control signaling may be responsive to (e.g., in a sidelink or downlink) received signaling, e.g., indicating acknowledgement signaling associated therewith, which may be HARQ or ARQ signaling. The end symbol may represent an end symbol (in time) of a downlink or sidelink transmission or signaling, which may be intended or scheduled for a radio node or user equipment. Such downlink signaling may in particular be data signaling, e.g. on a physical downlink channel such as a shared channel, e.g. PDSCH (physical downlink shared channel). The start symbol may be determined based on and/or relative to such an end symbol.
Configuring a radio node, in particular a terminal or a user equipment, may refer to adapting or causing or setting the radio node to operate according to the configuration, the configuration may be done by another device, e.g. a network node (e.g. a radio node of a network such as a base station or eNodeB) or a network, in which case it may comprise sending configuration data to the radio node to be configured, such configuration data may represent the configuration to be configured and/or comprise or more instructions related to the configuration, e.g. a configuration for sending and/or receiving on allocated resources, in particular frequency resources.
In general, configuring may include determining configuration data representing the configuration and providing it (in parallel and/or sequentially) to one or more other nodes, which may send it to the radio node (or another node, which may be repeated until it reaches the wireless device) in alternatively or additionally, configuring the radio node, e.g. by a network node or other device, may include, e.g., receiving configuration data and/or data related to the configuration data from another node, such as a network node, and/or sending the received configuration data to the radio node, which other node may be a higher level node of the network.
The resource structure may comprise and/or consist of resource elements, and/or the time intervals of the resource structure may comprise and/or consist of symbol time intervals, and/or the frequency intervals of the resource structure may comprise and/or consist of subcarriers.
A carrier may have allocated to it a center frequency or center frequency spacing, represented for example by or more subcarriers (a frequency bandwidth or spacing may typically be allocated to each subcarrier).
It should be noted that the term "radio" in this disclosure may be considered generally in relation to wireless communications, and may also include wireless communications utilizing microwaves and/or millimeters and/or other frequencies, particularly between 100MHz or 1GHz and 100GHz or 20 or 10 GHz.
A radio node, in particular a network node or a terminal, may generally be any device adapted to transmit and/or receive radio and/or wireless signals and/or data, in particular communication data, on at least carriers said at least carriers may comprise carriers accessed based on LBT procedures (may be referred to as LBT carriers), e.g. unlicensed carriers.
A cell may generally include or more carriers and/or be defined by or more carriers or for or more carriers, which may particularly be at least carriers for UL communications/transmissions (referred to as UL carriers) and at least carriers for DL communications/transmissions (referred to as DL carriers).
A channel may generally be a logical, transport, or physical channel, a channel may include and/or be disposed on or more carriers, particularly a plurality of subcarriers.
In general, a symbol may represent and/or be associated with a symbol time length, which may depend on the carrier and/or subcarrier spacing and/or the numerical scheme of the associated carrier. Thus, symbols may be considered for indicating time intervals having a symbol time length relative to the frequency domain. The symbol time length may depend on the carrier frequency and/or bandwidth and/or the numerology and/or subcarrier spacing of or associated with the symbol. Thus, different symbols may have different symbol time lengths.
In variants, the side link communication may be performed without interaction of the network node (e.g., network node), for example, over fixedly defined resources and/or over resources negotiated between participants.
Sidelink communications may also be referred to as device-to-device (D2D) communications, and/or in some cases as ProSe (proximity services) communications, for example in the context of LTE. Sidelinks may be implemented in the context of V2x communications (vehicle communications), e.g., V2V (vehicle-to-vehicle), V2I (vehicle-to-infrastructure), and/or V2P (vehicle-to-human). Any device suitable for sidelink communications may be considered a user equipment or terminal.
The sidelink communication channel (or structure) may include or more (e.g., physical or logical) channels, e.g., PSCCH (physical sidelink control channel, which may carry, for example, control information such as acknowledgement location indications) and/or PSCCH (physical sidelink shared channel, which may carry, for example, data and/or acknowledgement signaling) it may be considered that the sidelink communication channel (or structure) is related to and/or uses or more carriers and/or frequency ranges associated with and/or used by cellular communications according to a particular grant and/or standard.
A user equipment and/or its wireless circuitry and/or processing circuitry may be deemed suitable for sidelink communications if the user equipment and/or its wireless circuitry and/or processing circuitry is adapted to utilize sidelinks, e.g., on or more frequency ranges and/or carriers and/or in or more formats, particularly according to a particular standard.
Communicating or making a communication may generally include sending and/or receiving signaling. Communication on the sidelink (or sidelink signaling) may include utilizing sidelink for communication (respectively for signaling). Sidelink transmissions and/or transmissions on sidelinks may be considered to include transmissions utilizing sidelinks, e.g., associated resources and/or transmission formats and/or circuits and/or air interfaces. Sidelink reception and/or reception on a sidelink may be considered to include reception with a sidelink, e.g., associated resources and/or transport format and/or circuitry and/or air interface. Sidelink control information (e.g., SCI) may generally be considered to include control information transmitted using sidelink.
In general, Carrier Aggregation (CA) may refer to the concept of wireless connections and/or communication links between a wireless and/or cellular communication network and/or network node and a terminal or side link comprising multiple carriers for at least transmission directions (e.g., DL and/or UL), and aggregation of carriers.
Scheduled transmissions may not be received, or scheduled uplink transmissions may not be sent, e.g., due to power limitations or other effects (e.g., a channel on an unlicensed carrier is occupied), transmissions may be scheduled for a transmission timing sub-structure within a transmission timing structure such as a slot (e.g., a small slot, and/or covering only an portion of the transmission timing structure).
Predefined in the context of the present disclosure may refer to relevant information, e.g. defined in a standard, and/or available without a specific configuration from the network or network node, e.g. stored in a memory, e.g. independent of the configuration. The configured or configurable may be considered to relate to corresponding information set/configured, e.g. by the network or network node.
The mini-slots may be transmitted and/or received based on the configuration.
It should be noted that in contrast to higher layer signaling such as MAC (medium access control) signaling or RRC layer signaling, the downlink control information or specifically DCI signaling may be considered physical layer signaling, hi the higher the signaling layer, it takes into account less frequency/more time/resource consumption, at least in part because the information contained in such signaling must be passed through multiple layers, requiring processing and operation per layer .
The scheduled transmissions and/or mini-slots or beams may relate to specific channels, in particular physical uplink shared channels, physical uplink control channels, or physical downlink shared channels, such as PUSCH, PUCCH or PDSCH, and/or may relate to specific cells and/or carrier aggregation. Corresponding configurations, e.g., scheduling configurations or symbol configurations, may be related to such channel, cell and/or carrier aggregation.
The configuration may be a configuration indicating timing and/or representing or being configured with corresponding configuration data. The configuration may be embedded and/or contained in a message or configuration or corresponding data, which may particularly indicate and/or schedule resources semi-persistently and/or semi-statically.
Scheduled transmissions may be considered to mean transmissions on a physical channel, in particular on a shared physical channel, such as a physical uplink shared channel or a physical downlink shared channel. For such channels, a semi-persistent configuration may be particularly suitable.
The control region of the transmission timing structure may be a time interval intended or scheduled or reserved for control signaling, in particular downlink control signaling, and/or for a specific control channel (e.g. a physical downlink control channel like PDCCH). The interval may comprise and/or consist of a plurality of symbols in time, which may be configured or configurable, e.g. by (UE-specific) dedicated signaling (which may be unicast, e.g. addressed to or intended for a specific UE), e.g. on PDCCH or RRC signaling, or on a multicast or broadcast channel.
The duration of the symbols of the transmission timing structure may generally depend on the digital scheme and/or the carrier, which may be configurable. The digital scheme may be a digital scheme for scheduled transmissions.
Scheduling a device, or scheduling for a device, and/or related transmissions or signaling may be considered to include or be in the form of configuring a device with resources, and/or indicating resources to a device, e.g., for communication.
In particular, a scheduled transmission may be considered to comprise a device that configures the scheduling with or more resources for the transmission and/or informs the device that the transmission is intended for certain resources and/or is scheduled for certain resources.A transmission may be scheduled to cover a time interval, in particular a contiguous number of symbols, which may form a contiguous time interval between a start symbol and an end symbol (including a start symbol and an end symbol.) A start symbol and an end symbol of a (e.g., scheduled) transmission may be within the same transmission timing structure, e.g., within the same time slot, however, in certain cases an end symbol may have a timing that is later than a start symbol of a transmission, in particular a scheduling symbol structure may be associated with a PUSCH transmission, e.g., a channel scheduling symbol structure, or a PUSCH transmission structure, may be considered to be associated with a particular channel scheduling symbol structure, such as a number of consecutive time intervals, in particular a PUSCH transmission timing structure, or variations.
The transmission timing structure may include a plurality of symbols and/or define intervals (respectively associated with time intervals) that include a plurality of symbols. In the context of the present disclosure, it should be noted that for ease of reference, references to symbols may be interpreted to refer to time domain projections or time intervals or time components or durations or lengths of time of the symbols, unless it is clear from the context that frequency domain components must also be considered. Examples of transmission timing structures include slots, subframes, minislots (which may also be considered as a substructure of slots), slot aggregations (which may include multiple slots and may be considered as an upper layer structure of slots), and their time domain components, respectively.
A timing structure (which may also be considered or implemented as a synchronization structure) may be defined by a series of such transmission timing structures, which may define, for example, a timing grid having symbols representing a minimum grid structure.
In the present disclosure, for purposes of explanation and not limitation, specific details are set forth, such as particular network functions, procedures, and signaling steps, in order to provide a thorough understanding of the techniques presented herein. It will be apparent to those skilled in the art that the concepts and aspects of the disclosure may be practiced with other variations and modifications that depart from these specific details.
For example, the concepts and variations are described in part in the context of Long Term Evolution (LTE) or LTE-advanced (LTE-a) or new wireless mobile or wireless communication technologies. However, this does not preclude the concepts and aspects of the present disclosure from being used in conjunction with additional or alternative mobile communication technologies, such as global system for mobile communications (GSM). Although the following variations will be described in part with respect to certain Technical Specifications (TSs) of the third generation partnership project (3GPP), it should be understood that the concepts and aspects of the present disclosure may also be implemented in connection with different Performance Management (PM) specifications.
Further, those skilled in the art will appreciate that the services, functions, and steps explained herein can be implemented using software that operates in conjunction with a programmed microprocessor or using an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a field programmable array (FPGA), or a general purpose computer.
It is believed that the advantages of the aspects and variations presented herein will be fully understood from the foregoing description, and it will be apparent that various changes may be made in the form, construction and arrangement of the exemplary aspects thereof without departing from the scope of the concepts and aspects described herein or without sacrificing all of its material advantages. The aspects presented herein may be varied in many ways.
some useful abbreviations include:
CSI-RS channel state information reference signaling
LTE Long term evolution, communication standard
NR New Wireless, communication Standard
SSI signal strength indicator/information
RSSI received signal strength indicator/information
RSRP reference signal (signaling) received power
RSRQ reference signal (signaling) reception quality
SINR signal-to-interference-and-noise ratio
SIR signal-to-interference ratio
SNR signal-to-noise ratio
CQI channel quality information
DCI downlink control information
OFDM orthogonal frequency division multiplexing
RRC radio resource control
UCI uplink control information
UE user equipment
These abbreviations may be explained according to 3GPP (third generation partnership project, standardization organization).
- 上一篇：一种医用注射器针头装配设备
- 下一篇：用于高多普勒条件的多天线传输协议