阅读说明：本技术 一种干扰控制方法及装置 (Interference control method and device ) 是由 廖敏 高帅 张忠皓 李福昌 于 2021-08-27 设计创作，主要内容包括：本发明提供一种干扰控制方法及装置,涉及通信技术领域,用于检测并降低基站间的交叉时隙内的波束干扰,提高通信效率。该干扰控制方法应用于干扰基站,干扰基站归属于包括干扰基站和被干扰基站的通信系统；干扰控制方法包括：向被干扰基站发送第一信道状态信息参考信号,以获取目标干扰波束；目标干扰波束为参考信号接收功率大于预设阈值的波束；接收被干扰基站响应于第一信道状态信息参考信号发送的第一信令消息；第一信令消息包括目标干扰波束的标识；根据预先设定好的波束调整策略,调整目标干扰波束的波束参数。(The invention provides an interference control method and device, relates to the technical field of communication, and is used for detecting and reducing beam interference in cross time slots between base stations and improving communication efficiency. The interference control method is applied to an interference base station, wherein the interference base station belongs to a communication system comprising the interference base station and an interfered base station; the interference control method comprises the following steps: sending a first channel state information reference signal to an interfered base station to acquire a target interference wave beam; the target interference wave beam is a wave beam with reference signal receiving power larger than a preset threshold value; receiving a first signaling message sent by an interfered base station in response to a first channel state information reference signal; the first signaling message includes an identification of the target interference beam; and adjusting the beam parameters of the target interference beam according to a preset beam adjustment strategy.)

1. An interference control method is applied to an interference base station, and is characterized in that the interference base station belongs to a communication system comprising the interference base station and an interfered base station; the interference control method comprises the following steps:

sending a first channel state information reference signal to the interfered base station to acquire a target interference beam; the target interference wave beam is a wave beam with reference signal receiving power larger than a preset threshold value;

receiving a first signaling message sent by the interfered base station in response to the first channel state information reference signal; the first signaling message includes an identification of the target interfering beam;

and adjusting the beam parameters of the target interference beam according to a preset beam adjustment strategy.

2. The interference control method according to claim 1, wherein after adjusting the beam parameter of the target interference beam according to a preset beam adjustment policy, the method further comprises:

sending a second channel state information reference signal to the interfered base station to acquire the reference signal receiving power of the target interference beam;

receiving a second signaling message sent by the interfered base station in response to the second channel state information reference signal; the second signaling message comprises a reference signal received power of the target interfering beam;

and if the reference signal receiving power of the target interference wave beam is smaller than or equal to a preset threshold value, outputting an interference elimination prompt message.

3. An interference control method is applied to an interfered base station, and is characterized in that the interfered base station belongs to a communication system comprising an interfering base station and the interfered base station; the interference control method comprises the following steps:

receiving a first channel state information reference signal sent by the interference base station;

responding to the first channel state information reference signal, and acquiring the reference signal receiving power of each interference beam in all the interference beams;

acquiring beams with reference signal receiving power larger than a preset threshold value from all the interference beams, and determining the acquired beams as target interference beams;

sending a first signaling message to the interference base station, so that the interference base station adjusts the beam parameter of the target interference beam according to a preset beam adjustment strategy; the first signaling message includes an identification of the target interfering beam.

4. The interference control method according to claim 3, wherein after the sending the first signaling message to the interfering base station, further comprising:

receiving a second channel state information reference signal sent by the interference base station;

responding to the second channel state information reference signal, and acquiring the reference signal receiving power of the target interference wave beam;

and if the reference signal receiving power of the target interference wave beam is smaller than or equal to the preset threshold, sending a second signaling message to the interference base station so that the interference base station outputs an interference elimination prompting message.

5. An interference control device is applied to an interference base station, and is characterized in that the interference base station belongs to a communication system comprising the interference base station and an interfered base station; the interference control apparatus includes: a transmitting unit, a receiving unit and a processing unit;

a sending unit, configured to send a first channel state information reference signal to the interfered base station to obtain a target interference beam; the target interference wave beam is a wave beam with reference signal receiving power larger than a preset threshold value;

a receiving unit, configured to receive a first signaling message sent by the interfered base station in response to the first channel state information reference signal; the first signaling message includes an identification of the target interfering beam;

and the processing unit is used for adjusting the beam parameters of the target interference beam according to a preset beam adjustment strategy.

6. The interference control apparatus according to claim 5,

the sending unit is further configured to send a second channel state information reference signal to the interfered base station to obtain reference signal receiving power of the target interference beam;

the receiving unit is further configured to receive a second signaling message sent by the interfered base station in response to the second channel state information reference signal; the second signaling message comprises a reference signal received power of the target interfering beam;

the processing unit is further configured to output an interference cancellation prompting message if the reference signal received power of the target interference beam is less than or equal to a preset threshold.

7. An interference control device is applied to an interfered base station, and is characterized in that the interfered base station belongs to a communication system comprising an interfering base station and the interfered base station; the interference control apparatus includes: the device comprises a receiving unit, an acquiring unit and a sending unit;

the receiving unit is configured to receive a first channel state information reference signal sent by the interfering base station;

the obtaining unit is configured to obtain, in response to the first channel state information reference signal, reference signal received power of each interference beam among all interference beams;

the obtaining unit is further configured to obtain, from among all the interference beams, a beam whose reference signal received power is greater than a preset threshold, and determine the obtained beam as a target interference beam;

the processing unit is configured to send a first signaling message to the interfering base station, so that the interfering base station adjusts a beam parameter of the target interfering beam according to a preset beam adjustment policy; the first signaling message includes an identification of the target interfering beam.

8. The interference control apparatus according to claim 7,

the receiving unit is further configured to receive a second channel state information reference signal sent by the interfering base station;

the obtaining unit is further configured to obtain a reference signal received power of the target interference beam in response to the second channel state information reference signal;

the sending unit is further configured to send a second signaling message to the interfering base station if the reference signal received power of the target interfering beam is less than or equal to the preset threshold, so that the interfering base station outputs an interference cancellation prompting message.

9. An interference control apparatus comprising a memory and a processor; the memory is used for storing computer execution instructions, and the processor is connected with the memory through a bus; the processor executes the computer-executable instructions stored by the memory to cause the interference control device to perform the interference control method of any one of claims 1-2 or 3-4 when the interference control device is operating.

10. A computer-readable storage medium comprising computer-executable instructions that, when executed on a computer, cause the computer to perform the interference control method of any one of claims 1-2 or 3-4.

Technical Field

The present invention relates to the field of communications, and in particular, to an interference control method and apparatus.

Background

A millimeter wave large-scale multi-antenna (Massive MIMO) system is a technical scheme which can effectively improve the spectrum efficiency and the utilization rate and can meet the requirement of a plurality of user terminals on a large amount of data at the same time. Due to the antenna size and propagation condition limitations, the high band applies massive beamforming techniques to compensate for path propagation losses. And analog or hybrid (analog + digital) beamforming is the main technical approach for cost and power consumption considerations.

For a high frequency band using a digital-analog hybrid array, an analog shaping mode can be determined according to a beam management method, and then a numerical control analog phase shifter is adjusted to form an analog beam.

However, when the edge users of the base stations with different frame structures are located close to each other, strong inter-base-station cross slot interference may be generated when the transmitting/receiving beams of the two base stations are aligned, and thus the communication efficiency is reduced.

Disclosure of Invention

The invention provides an interference control method and device, which are used for detecting and reducing beam interference in cross time slots between base stations and improving communication efficiency.

In order to achieve the purpose, the technical scheme is as follows:

in a first aspect, an interference control method is provided, which is applied to an interfering base station, where the interfering base station belongs to a communication system including the interfering base station and an interfered base station; the interference control method comprises the following steps: sending a first channel state information reference signal to an interfered base station to acquire a target interference wave beam; the target interference wave beam is a wave beam with reference signal receiving power larger than a preset threshold value; receiving a first signaling message sent by an interfered base station in response to a first channel state information reference signal; the first signaling message includes an identification of the target interference beam; and adjusting the beam parameters of the target interference beam according to a preset beam adjustment strategy.

It can be seen that, in the present application, when the interfering base station generates interference, the interfering base station may send the first channel state information reference signal to the interfered base station, so as to obtain a target interference beam whose reference signal received power is greater than a preset threshold. Subsequently, after receiving a first signaling message including a target interference beam sent by the interfered base station, adjusting a beam parameter of the target interference beam according to a preset beam adjustment strategy. Thus, the interference base station can detect and reduce the beam interference in the cross time slot between the base stations, and the communication efficiency is improved.

Optionally, after adjusting the beam parameter of the target interference beam according to a preset beam adjustment policy, the method further includes: sending a second channel state information reference signal to the interfered base station to acquire reference signal receiving power of a target interference wave beam; receiving a second signaling message sent by the interfered base station in response to the second channel state information reference signal; the second signaling message comprises reference signal received power of the target interference beam; and if the reference signal receiving power of the target interference wave beam is less than or equal to a preset threshold value, outputting an interference elimination prompt message.

In a second aspect, an interference control method is provided, which is applied to an interfered base station, where the interfered base station belongs to a communication system including an interfering base station and an interfered base station; the interference control method comprises the following steps: receiving a first channel state information reference signal sent by an interference base station; responding to the first channel state information reference signal, and acquiring the reference signal receiving power of each interference beam in all the interference beams; acquiring beams with reference signal receiving power larger than a preset threshold value from all interference beams, and determining the acquired beams as target interference beams; sending a first signaling message to an interference base station so that the interference base station adjusts beam parameters of a target interference beam according to a preset beam adjustment strategy; the first signaling message includes an identification of the target interfering beam.

Optionally, after sending the first signaling message to the interfering base station, the method further includes: receiving a second channel state information reference signal sent by the interference base station; responding to the second channel state information reference signal, and acquiring the reference signal receiving power of the target interference wave beam; and if the reference signal receiving power of the target interference wave beam is less than or equal to the preset threshold, sending a second signaling message to the interference base station so that the interference base station outputs an interference elimination prompt message.

In a third aspect, an interference control apparatus is provided, which is applied to an interfering base station, where the interfering base station belongs to a communication system including the interfering base station and an interfered base station; the interference control device includes: a transmitting unit, a receiving unit and a processing unit; a sending unit, configured to send a first channel state information reference signal to an interfered base station to obtain a target interference beam; the target interference wave beam is a wave beam with reference signal receiving power larger than a preset threshold value; a receiving unit, configured to receive a first signaling message sent by an interfered base station in response to a first channel state information reference signal; the first signaling message includes an identification of the target interference beam; and the processing unit is used for adjusting the beam parameters of the target interference beam according to a preset beam adjustment strategy.

Optionally, the sending unit is further configured to send a second channel state information reference signal to the interfered base station, so as to obtain reference signal receiving power of the target interference beam; the receiving unit is further used for receiving a second signaling message sent by the interfered base station in response to the second channel state information reference signal; the second signaling message comprises reference signal received power of the target interference beam; and the processing unit is further used for outputting an interference elimination prompting message if the reference signal receiving power of the target interference beam is smaller than or equal to a preset threshold value.

In a fourth aspect, an interference control apparatus is provided, which is applied to an interfered base station belonging to a communication system including an interfering base station and an interfered base station; the interference control device includes: the device comprises a receiving unit, an acquiring unit and a sending unit; a receiving unit, configured to receive a first channel state information reference signal sent by an interfering base station; an obtaining unit, configured to obtain, in response to the first channel state information reference signal, reference signal received power of each interference beam among all interference beams; the acquisition unit is further used for acquiring beams with reference signal receiving power larger than a preset threshold value from all interference beams and determining the acquired beams as target interference beams; the processing unit is used for sending a first signaling message to the interference base station so that the interference base station adjusts the beam parameters of the target interference beam according to a preset beam adjustment strategy; the first signaling message includes an identification of the target interfering beam.

Optionally, the receiving unit is further configured to receive a second channel state information reference signal sent by the interfering base station; the acquisition unit is further used for responding to the second channel state information reference signal and acquiring the reference signal receiving power of the target interference wave beam; and the sending unit is further configured to send a second signaling message to the interfering base station if the reference signal receiving power of the target interfering beam is less than or equal to a preset threshold, so that the interfering base station outputs an interference cancellation prompting message.

In a fifth aspect, an interference control apparatus is provided, comprising a memory and a processor; the memory is used for storing computer execution instructions, and the processor is connected with the memory through a bus; when the interference control device is running, the processor executes computer-executable instructions stored in the memory to cause the interference control device to perform the interference control method of the first aspect.

The interference control device may be a network device, or may be a part of a device in the network device, for example, a system on chip in the network device. The system on chip is configured to support the network device to implement the functions involved in the first aspect and any one of the possible implementations thereof, for example, to receive, determine, and shunt data and/or information involved in the interference control method. The chip system includes a chip and may also include other discrete devices or circuit structures.

In a sixth aspect, a computer-readable storage medium is provided, which comprises computer-executable instructions, which, when executed on a computer, cause the computer to perform the interference control method according to the first and second aspects.

In a seventh aspect, there is also provided a computer program product comprising computer instructions which, when run on an interference control apparatus, cause the interference control apparatus to perform the interference control method according to the first and second aspects.

It should be noted that all or part of the above computer instructions may be stored on the first computer readable storage medium. The first computer readable storage medium may be packaged together with or separately from a processor of the interference control apparatus, which is not limited in this application.

For a description of the third, fourth, fifth, sixth and seventh aspects of the present application, reference may be made to the detailed description of the first and second aspects; in addition, for the beneficial effects of the third aspect, the fourth aspect, the fifth aspect, the sixth aspect and the seventh aspect, reference may be made to the beneficial effect analysis of the first aspect and the second aspect, and details are not repeated here.

In the present application, the names of the above-mentioned interference control means do not limit the devices or functional modules themselves, which may appear by other names in actual implementations. Insofar as the functions of the respective devices or functional modules are similar to those of the present application, they fall within the scope of the claims of the present application and their equivalents.

These and other aspects of the present application will be more readily apparent from the following description.

Drawings

Fig. 1A is a schematic structural diagram of a beam pair provided in the present application;

fig. 1B is a schematic structural diagram of a communication system provided in the present application;

fig. 2A is a schematic diagram of a hardware structure of a communication device provided in the present application;

fig. 2B is a schematic diagram of another hardware structure of the communication device provided in the present application;

fig. 3 is a first flowchart illustrating an interference control method according to the present application;

fig. 4 is a second flowchart illustrating an interference control method according to the present application;

fig. 5 is a first schematic structural diagram of an interference control apparatus provided in the present application;

fig. 6 is a schematic structural diagram of an interference control apparatus according to the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

For the convenience of clearly describing the technical solutions of the embodiments of the present application, in the embodiments of the present application, the terms "first" and "second" are used to distinguish the same items or similar items with basically the same functions and actions, and those skilled in the art can understand that the terms "first" and "second" are not used to limit the quantity and execution order.

To facilitate an understanding of the present application, the relevant elements referred to in the present application will now be described.

Beamforming in millimeter wave frequency band

Due to the antenna size and propagation condition limitations, the high band applies massive beamforming techniques to compensate for path propagation losses. And analog or hybrid (analog + digital) beamforming is the main technical approach for cost and power consumption considerations. A beam management mechanism is designed for the 5G base station, so that the base station and the terminal can align to transmit and receive beams, and the beam management mechanism comprises a beam measurement and reporting mechanism, a beam indication mechanism and the like.

After the base station selects one transmitting beam, the signal propagates along a specific direction, and the terminal needs to receive the signal by using a receiving beam corresponding to the transmitting beam of the base station, otherwise, the quality of the signal received by the terminal is reduced, and even a useful signal cannot be received. Therefore, there is a certain correspondence between the transmit beam and the receive beam, which we refer to as a beam pair. As shown in fig. 1A, the beam t6 of the base station and the r2 beam of user 2 are a beam pair. The beam t4 of the base station and the r3 beam of user 1 are a beam pair.

To achieve alignment of the transmit and receive beam pairs, the base station transmits reference signals (e.g., CSI-RS) in a beam scanning manner. If a base station is capable of transmitting M analog beams, each beam may be configured with a reference signal for beam measurement, and each reference signal is shaped with the corresponding analog beam. The M reference signals are transmitted on different time or frequency domain resources so that the base station can adjust the configuration of the phase shifter for each beam direction to implement analog beamforming.

Millimeter wave beam management

In the millimeter wave communication process, beam scanning and beam tracking are key technologies and bases of millimeter waves, and downlink beam tracking mainly depends on SSB beam scanning (initial access state) and CSI-RS reference signal beam scanning (service connection state). The beam management specifically includes beam scanning, beam measurement, beam identification, beam reporting, beam failure recovery, and the like.

Beam scanning

Beam scanning refers to transmitting and/or receiving a beam in a predetermined manner in a specific period or time period to cover a specific spatial region. In order to increase the beamforming gain, a high-gain directional antenna is generally used to form a narrow beam width, which tends to cause a problem of insufficient coverage. To avoid this problem, multiple narrow beams may be used in the time domain to scan within the coverage area to meet the coverage requirements within the area. With the beam scanning technique, beams are transmitted in a predefined direction with a fixed period.

Beam measurement

Beam measurement refers to the process of measuring the quality and characteristics of the received shaped signal by a base station or a terminal. In the beam management process, the terminal or the base station identifies the best beam through correlation measurement. In the downlink direction, 3GPP defines a beam measurement reporting procedure based on L1-RSRP to support beam selection and reselection, which may be based on SSB or CSI-RS allocated to the terminal. The rapid beam information measurement and reporting can be carried out through L1-RSRP, and the measurement is carried out based on L1 without a filtering process of L3. The traditional L3 RSRP is reported by a high layer, and the L1 RSRP in 5G is reported directly at a physical layer, so that the reliability and the channel capacity are important.

Beam determination

The base station or the terminal selects the Tx/Rx beam it uses. The downlink beam is determined by the terminal with the decision criterion that the maximum received signal strength of the beam should be greater than a certain threshold. In the uplink direction, the mobile terminal transmits the SRS according to the direction of the base station, and the base station measures the SRS to determine the best uplink beam. If the base station side can determine the uplink reception beam according to the downlink beam measurement result of the terminal or the base station side can determine the downlink transmission beam according to the measurement result of the uplink reception beam, the base station side may consider the Tx/Rx beams to be identical. Also, if the terminal side can determine an uplink transmission beam according to the downlink beam measurement result of the terminal or the terminal can determine a downlink reception beam of the terminal according to the uplink beam measurement result of the terminal and the base station supports the characteristic indication information related to beam uniformity of the terminal, the terminal side may consider the Tx/Rx beams to be uniform.

Beam reporting

After determining the best beam, the terminal or the base station notifies the opposite terminal of the selected beam information. In addition, the base station and the terminal side also need to perform related operations such as beam failure recovery. With multi-beam operation, beam failures can easily cause link outages between the network and the terminals due to the relatively narrow beam width. When the channel quality of the terminal is poor, the bottom layer will send a beam failure notification. The terminal will indicate a new SS block or CSI-RS and perform beam recovery through a new RACH procedure. The base station will transmit downlink setup or UL grant information on the PDCCH to end the beam recovery procedure.

Flexible frame structure of millimeter wave frequency band

In order to meet differentiated industry requirements, particularly for monitoring, acquisition and broadcasting, medical and other video return services with clear uplink requirements, improve the technical advantages of millimeter waves in uplink, and increase the flexibility of millimeter waves in deployment, the embodiment of the application can utilize a matching scheme based on uplink enhancement except a conventional millimeter wave frame structure (downlink).

Millimeter wave common frame structure

DDDSU (Option 1): the frame structure mainly comprises the following behaviors, is suitable for scenes with high downlink traffic flow and low uplink traffic flow requirement, has large downlink occupation ratio, can cover by using more beams, and has good downlink coverage.

DSUUU (Option 2): the frame structure mainly based on the uplink action is suitable for scenes mainly based on video return and upload services, and has more resources required for uplink processing of the base station and higher implementation difficulty. The downlink ratio is small, the SSB can place limited beams, and the coverage is relatively small.

DDSUU (Option 3): the frame structure with balanced uplink and downlink throughput rates is suitable for scenes with certain requirements on uplink and downlink service flow.

For the 3 millimeter wave common frame structures, prediction adjustment can be performed according to long-time service conditions of a coverage area, and rapid adjustment of uplink and downlink frame structures can also be performed according to sudden conditions applied in the 5G industry. The millimeter wave common frame structure can effectively meet the sudden demand of a concert, a stadium and the like on the uplink bandwidth.

Inter-station interference of cross time slots

As shown in fig. 1B, there is beam interference in the cross time slot between base stations with different frame structures (DtoU: interference on downlink transmission of base stations in neighboring cells and uplink reception of the cell). A typical scenario is that when edge users of two base stations are located close to each other, strong inter-base station DtoU interference is generated when transmitting/receiving beams of the two base stations are aligned.

As can be seen from the above, when the edge users of the base stations with different frame structures are located close to each other, strong inter-base-station cross slot interference may be generated when the transmitting/receiving beams of the two base stations are aligned, and further, the communication efficiency may be reduced.

In view of the foregoing problems, an embodiment of the present application provides an interference control method, where an interfering base station may send a first channel state information reference signal to an interfered base station when interference occurs, so as to obtain a target interference beam whose reference signal received power is greater than a preset threshold. Subsequently, after receiving a first signaling message including a target interference beam sent by the interfered base station, adjusting a beam parameter of the target interference beam according to a preset beam adjustment strategy. Thus, the interference base station can detect and reduce the beam interference in the cross time slot between the base stations, and the communication efficiency is improved.

The interference control method is suitable for a communication system. Fig. 1B shows a structure of the communication system. As shown in fig. 1B, the communication system includes: a terminal, an interfering base station and an interfered base station.

The terminal in fig. 1B may refer to a device that provides voice and/or data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem. A wireless terminal may communicate with one or more core networks via a Radio Access Network (RAN). The wireless terminals may be mobile terminals such as mobile phones (or "cellular" phones) and computers with mobile terminals, as well as portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices that exchange language and/or data with a wireless access network, such as cell phones, tablets, laptops, netbooks, Personal Digital Assistants (PDAs).

The interfering base station and the interfered base station in fig. 1B may be base stations or base station controllers of wireless communication, etc. In this embodiment, the base station may be a base station (BTS) in a global system for mobile communication (GSM), Code Division Multiple Access (CDMA), a base station (node B) in a Wideband Code Division Multiple Access (WCDMA), a base station (eNB) in an internet of things (IoT) or a narrowband internet of things (NB-IoT), a base station in a future 5G mobile communication network or a future evolved Public Land Mobile Network (PLMN), which is not limited in this embodiment.

The basic hardware structures of the terminal, the interfering base station and the interfered base station in the communication system are similar, and all include the elements included in the communication apparatus shown in fig. 2A or fig. 2B. The following describes hardware configurations of a terminal, an interfering base station, and an interfered base station, by taking the communication apparatus shown in fig. 2A and 2B as an example.

Fig. 2A is a schematic diagram of a hardware structure of a communication device according to an embodiment of the present disclosure. The communication device comprises a processor 21, a memory 22, a communication interface 23, a bus 24. The processor 21, the memory 22 and the communication interface 23 may be connected by a bus 24.

The processor 21 is a control center of the communication apparatus, and may be a single processor or a collective term for a plurality of processing elements. For example, the processor 21 may be a Central Processing Unit (CPU), other general-purpose processors, or the like. Wherein a general purpose processor may be a microprocessor or any conventional processor or the like.

For one embodiment, processor 21 may include one or more CPUs, such as CPU 0 and CPU 1 shown in FIG. 2A.

The memory 22 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that may store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that may store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

In a possible implementation, the memory 22 may exist separately from the processor 21, and the memory 22 may be connected to the processor 21 via a bus 24 for storing instructions or program codes. The processor 21, when calling and executing instructions or program code stored in the memory 22, is able to implement the interference control method provided by the following embodiments of the present invention.

In the embodiment of the present application, the software programs stored in the memory 22 are different for the terminal, the interfering base station, and the interfered base station, so that the functions implemented by the terminal, the interfering base station, and the interfered base station are different. The functions performed by the devices will be described in connection with the following flow charts.

In another possible implementation, the memory 22 may also be integrated with the processor 21.

The communication interface 23 is used for connecting the communication device with other devices through a communication network, which may be an ethernet, a radio access network, a Wireless Local Area Network (WLAN), or the like. The communication interface 23 may include a receiving unit for receiving data, and a transmitting unit for transmitting data.

The bus 24 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an extended ISA (enhanced industry standard architecture) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 2A, but it is not intended that there be only one bus or one type of bus.

It is noted that the configuration shown in fig. 2A does not constitute a limitation of the communication apparatus, which may include more or less components than those shown in fig. 2A, or some components in combination, or a different arrangement of components, in addition to those shown in fig. 2A.

Fig. 2B shows another hardware configuration of the communication apparatus in the embodiment of the present invention. As shown in fig. 2B, the communication device may include a processor 31 and a communication interface 32. The processor 31 is coupled to a communication interface 32.

The function of the processor 31 may refer to the description of the processor 21 above. The processor 31 also has a memory function and can function as the memory 22.

The communication interface 32 is used to provide data to the processor 31. The communication interface 32 may be an internal interface of the communication device, or may be an external interface (corresponding to the communication interface 23) of the communication device.

It is noted that the configuration shown in fig. 2A (or fig. 2B) does not constitute a limitation of the communication apparatus, which may include more or less components than those shown in fig. 2A (or fig. 2B), or combine some components, or a different arrangement of components, in addition to the components shown in fig. 2A (or fig. 2B).

Fig. 3 is a schematic flow chart of an interference control method according to an embodiment of the present application. The embodiment of the present application is applied to the communication system shown in fig. 1B, and includes: S301-S307.

S301, the interference base station sends a first channel state information reference signal to the interfered base station to acquire a target interference beam.

The target interference beam is a beam whose Reference Signal Receiving Power (RSRP) is greater than a preset threshold.

Specifically, the interfered base station may be subjected to cross slot interference generated by the adjacent interfering base stations with different frame structures by applying a frame structure of the uplink enhanced ratio. In this case, the interfering base station transmits a first channel state information reference signal to the interfered base station to acquire a target interference beam.

For example, when the interfered base station performs prediction adjustment according to the long-time service condition of the coverage area, the interfered base station may be subjected to adjacent interference base stations with different frame structures to generate cross-slot interference. In this case, the interfering base station measures the interference of downlink timeslot transmission to uplink timeslot reception between the interfering base station and the interfered base station by using the channel state information reference signal.

Optionally, in order not to affect the service of the online user, the interfering base station may send the first channel state information reference signal to the interfered base station at an idle time without service (for example, once a day in the morning for several minutes each time).

After the interfering base station sends the first channel state information reference signal to the interfered base station at the corresponding time, the interfered base station receives the first channel state information reference signal at the corresponding time for interference detection. The time-frequency domain position of the first channel state information reference signal can be flexibly configured by an Operation Administration and Maintenance (Operation Administration and Maintenance) device

In practical application, when the interfered base station applies the frame structure of the uplink enhancement ratio, the frame structure adjusted by the interfering base station can be notified through an NG-RAN NODE CONFIGURATION UPDATE flow, and carries TDD UL-DL CONFIGURATION Common NR IE.

And the interference base station compares the frame structure difference and configures channel state information reference signal resources (CSI-RS) in the crossed time slot. Wherein, the number of the configuration resources is equal to the number of the service beams. And then, the interference base station informs the channel state information reference signal resource configured by the interference base station through an NG-RAN NODE CONFIGURATION UPDATE flow and measures a preset threshold value of the reported reference signal receiving power.

Table 1 shows detailed information of parameters related to the embodiments of the present application.

TABLE 1

S302, the interfered base station receives a first channel state information reference signal sent by the interfering base station.

The interfering base station sends a first channel state information reference signal to the interfered base station so as to obtain the first channel state information reference signal sent by the interfering base station after the target interference wave beam is obtained.

And S303, the interfered base station responds to the first channel state information reference signal to acquire the reference signal receiving power of each interference beam in all the interference beams.

Specifically, after receiving a first channel state information reference signal sent by the interfering base station, the interfered base station obtains the reference signal receiving power of each interfering beam among all the interfering beams in response to the first channel state information reference signal.

Illustratively, after receiving the first channel state information reference signal sent by the interfering base station, the interfered base station traverses beams of the interfering base station and the interfered base station to obtain the reference signal received power of each of all the interfering beams. Assuming that the number of beams of the interfering base station and the interfered base station is N, the number of interference measurement amounts required to traverse the beams of the interfering base station and the interfered base station is N × N.

S304, the interfered base station acquires the beams with the reference signal receiving power larger than the preset threshold value from all the interference beams, and determines the acquired beams as target interference beams.

Specifically, after acquiring the reference signal receiving power of each interference beam among all interference beams in response to the first channel state information reference signal, the interfered base station acquires a beam of which the reference signal receiving power is greater than a preset threshold value from all interference beams, and determines the acquired beam as a target interference beam.

The preset threshold may be a threshold of a preset reference signal received power.

In practical application, the interfered base station traverses the configured CSI-RS according to the receiving wave beam of the interfered base station. And informing the interference base station of the detected strong interference wave BEAM through a newly added flow CLI BEAM detection.

The parameters of the add interface message are shown in table 2.

TABLE 2

And after receiving the message, the interference base station records the beam ID corresponding to the CSI-RS and stops sending the CSI-RS signal. And returning the CLI BEAM detection CONFIRM message to the interfered base station.

S305, the interfered base station sends a first signaling message to the interfering base station, so that the interfering base station adjusts the beam parameter of the target interference beam according to a preset beam adjustment strategy.

Wherein the first signaling message includes an identification of the target interfering beam.

Specifically, after acquiring a beam with reference signal received power greater than a preset threshold and determining the acquired beam as a target interference beam, the interfered base station sends a first signaling message to the interfering base station, so that the interfering base station adjusts a beam parameter of the target interference beam according to a preset beam adjustment strategy.

Optionally, the interfered base station reports the target interference beams higher than the preset threshold in the N × N measurement quantities to the interfering base station through a backhaul interface (Xn or Ng interface) of the base station based on the preset threshold.

Alternatively, the target interfering beam may be a beam pair. For example: a transmission beam 3 of the interfering base station and a reception beam 6 and a reception beam 7 of the interfered base station.

S306, the interfering base station receives a first signaling message sent by the interfered base station in response to the first channel state information reference signal.

Wherein the first signaling message includes an identification of the target interfering beam.

Specifically, after the interfered base station sends the first signaling message to the interfering base station, the interfering base station receives the first signaling message sent by the interfered base station in response to the first channel state information reference signal.

And S307, the interference base station adjusts the beam parameters of the target interference beam according to a preset beam adjustment strategy.

Specifically, after receiving a first signaling message sent by the interfered base station in response to the first channel state information reference signal, the interfering base station adjusts a beam parameter of the target interference beam according to a preset beam adjustment strategy.

Optionally, the beam parameter may be a beam direction, a transmission power corresponding to the beam, and the like. The preset beam adjustment strategy may be to adjust the beam direction of the beam, or to reduce the transmission power corresponding to the beam.

Optionally, with reference to fig. 3, as shown in fig. 4, after the interfering base station adjusts the beam parameter of the target interfering beam according to a preset beam adjustment policy, the method further includes:

s401, the interference base station sends a second channel state information reference signal to the interfered base station to obtain the reference signal receiving power of the target interference beam.

Specifically, after the interfering base station adjusts the beam parameter of the target interfering beam according to a preset beam adjustment strategy, the adjusted target interfering beam generates interference again, and the interfering base station sends a second channel state information reference signal to the interfered base station to obtain the reference signal receiving power of the target interfering beam.

S402, the interfered base station receives a second channel state information reference signal sent by the interfering base station.

After the interfering base station sends the second channel state information reference signal to the interfered base station to obtain the reference signal receiving power of the target interfering beam, the interfered base station correspondingly receives the second channel state information reference signal sent by the interfering base station.

And S403, the interfered base station responds to the second channel state information reference signal to acquire the reference signal receiving power of the target interference beam.

Specifically, after the interfered base station receives the second channel state information reference signal sent by the interfering base station, the interfered base station responds to the second channel state information reference signal to obtain the reference signal receiving power of the target interference beam.

Illustratively, the interfered base station scans the strong interference beam pair again, and the number of interference measurements to be maintained is a × B. A is the number of strong interference transmitting beam pairs indicated by the interfered base station through the backhaul interface, and B is the number of matched receiving beams recorded by the interfered base station.

Illustratively, if the target interfering beam is a beam pair, for example: the transmission beam 3 of the interfering base station and the reception beam 6 and the reception beam 7 of the interfered base station are a-1 and B-2.

In practical application, the interfered base station receives the CLI BEAM detection configuration message and scans the reported strong interference BEAM pair again. An empty CLI BEAM detect message is sent to inform the interfering base station that there is no strong interfering BEAM.

S404, if the reference signal receiving power of the target interference wave beam is smaller than or equal to a preset threshold value, the interfered base station sends a second signaling message to the interference base station, so that the interference base station outputs an interference elimination prompt message.

Specifically, after the interfered base station responds to the second channel state information reference signal and acquires the reference signal receiving power of the target interference beam, if the reference signal receiving power of the target interference beam is less than or equal to a preset threshold, the interfered base station sends a second signaling message to the interfering base station, so that the interfering base station outputs an interference elimination prompt message.

Optionally, after the interfering base station adjusts the beam parameter of the target interfering beam according to a preset beam adjustment policy, if the interfered base station does not detect the strong interference transmitting/receiving beam pair, the interfered base station indicates the interfering base station through a signaling message of a backhaul interface (Xn or Ng interface) of the base station, and the interference is eliminated.

In practical application, the interfered base station stores the detected strong interference beam ID, and avoids the beam ID direction during the subsequent cross time slot scheduling. And deleting the CSI-RS CONFIGURATION for CLI measurement, informing the interference base station that the CSI-RS CONFIGURATION configured by the interference base station is deleted through an NG-RAN NODE CONFIGURATION UPDATE flow, and stopping a scanning flow.

S405, the interfering base station receives a second signaling message sent by the interfered base station in response to the second channel state information reference signal.

Wherein the second signaling message includes the reference signal received power of the target interference beam.

And the interfered base station sends a second signaling message to the interfering base station, so that the interfering base station receives the second signaling message sent by the interfered base station in response to the second channel state information reference signal correspondingly after outputting the interference elimination prompting message.

S406, if the reference signal receiving power of the target interference wave beam is smaller than or equal to a preset threshold, the interference base station outputs an interference elimination prompt message.

Specifically, after receiving a second signaling message sent by the interfered base station in response to the second channel state information reference signal, the interfering base station analyzes the second signaling message to obtain the reference signal receiving power of the target interference beam. And if the reference signal receiving power of the target interference wave beam is less than or equal to the preset threshold, the interference base station outputs an interference elimination prompt message.

It can be seen that, in the embodiment of the present application, when the interfering base station generates interference, the interfering base station may send the first channel state information reference signal to the interfered base station, so as to obtain a target interference beam whose reference signal received power is greater than the preset threshold. Subsequently, after receiving a first signaling message including a target interference beam sent by the interfered base station, adjusting a beam parameter of the target interference beam according to a preset beam adjustment strategy. Thus, the interference base station can detect and reduce the beam interference in the cross time slot between the base stations, and the communication efficiency is improved.

The scheme provided by the embodiment of the application is mainly introduced from the perspective of a method. To implement the above functions, it includes hardware structures and/or software modules for performing the respective functions. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the terminal may be divided into the functional modules according to the method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. Optionally, the division of the modules in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

Fig. 5 is a schematic structural diagram of an interference control apparatus according to an embodiment of the present disclosure. The information processing apparatus may be configured to execute the interference control method shown in fig. 3 or 4. The interference control apparatus shown in fig. 5 is applied to an interfering base station belonging to a communication system including an interfering base station and an interfered base station; the interference control device includes: a transmitting unit 501, a receiving unit 502 and a processing unit 503.

A sending unit 501, configured to send a first channel state information reference signal to an interfered base station to obtain a target interference beam; the target interference beam is a beam with reference signal received power greater than a preset threshold. For example, in conjunction with fig. 3, the sending unit 501 is configured to execute S301.

A receiving unit 502, configured to receive a first signaling message sent by an interfered base station in response to a first channel state information reference signal; the first signaling message includes an identification of the target interfering beam. For example, in connection with fig. 3, the receiving unit 502 is configured to execute S306.

The processing unit 503 is configured to adjust a beam parameter of the target interference beam according to a preset beam adjustment policy. For example, in conjunction with fig. 3, the processing unit 503 is configured to execute S307.

Optionally, the sending unit 501 is further configured to send a second channel state information reference signal to the interfered base station, so as to obtain reference signal received power of the target interference beam. For example, in conjunction with fig. 4, the sending unit 501 is configured to execute S401.

A receiving unit 502, configured to receive a second signaling message sent by the interfered base station in response to the second channel state information reference signal; the second signaling message includes the reference signal received power of the target interfering beam. For example, in connection with fig. 4, the receiving unit 502 is configured to execute S405.

The processing unit 503 is further configured to output an interference cancellation prompting message if the reference signal received power of the target interference beam is less than or equal to a preset threshold. For example, in connection with fig. 4, the processing unit 503 is configured to execute S406.

Fig. 6 is a schematic structural diagram of another interference control apparatus according to an embodiment of the present application. The information processing apparatus may be configured to execute the interference control method shown in fig. 3 or 4. The interference control apparatus shown in fig. 6 is applied to an interfered base station belonging to a communication system including an interfering base station and an interfered base station; the interference control device includes: a receiving unit 601, an acquiring unit 602, and a transmitting unit 603.

A receiving unit 601, configured to receive a first channel state information reference signal sent by an interfering base station. For example, in conjunction with fig. 3, the receiving unit 601 is configured to perform S302.

An obtaining unit 602, configured to obtain, in response to the first channel state information reference signal, reference signal received power of each of all interference beams. For example, in conjunction with fig. 3, the obtaining unit 602 is configured to perform S303.

The obtaining unit 602 is further configured to obtain, from all interference beams, a beam whose reference signal received power is greater than a preset threshold, and determine the obtained beam as a target interference beam. For example, in conjunction with fig. 3, the obtaining unit 602 is configured to execute S304.

The processing unit is used for sending a first signaling message to the interference base station so that the interference base station adjusts the beam parameters of the target interference beam according to a preset beam adjustment strategy; the first signaling message includes an identification of the target interfering beam. For example, in conjunction with fig. 3, the processing unit is configured to execute S305.

Optionally, the receiving unit 601 is further configured to receive a second channel state information reference signal sent by the interfering base station. For example, in conjunction with fig. 4, the receiving unit 601 is configured to perform S402.

The obtaining unit 602 is further configured to obtain a reference signal received power of the target interference beam in response to the second channel state information reference signal. For example, in conjunction with fig. 4, the obtaining unit 602 is configured to execute S403.

The sending unit 603 is further configured to send a second signaling message to the interfering base station if the reference signal received power of the target interfering beam is less than or equal to a preset threshold, so that the interfering base station outputs an interference cancellation prompting message. For example, in conjunction with fig. 4, the transmitting unit 603 is configured to execute S404.

Embodiments of the present application further provide a computer-readable storage medium, where the computer-readable storage medium includes computer-executable instructions, and when the computer-executable instructions are executed on a computer, the computer is enabled to execute the information processing method provided in the foregoing embodiments.

The embodiment of the present application further provides a computer program, where the computer program may be directly loaded into the memory and contains a software code, and the computer program is loaded and executed by the computer to implement the information processing method provided in the foregoing embodiment.

Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in this invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer-readable storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules or units is only one logical function division, and there may be other division ways in actual implementation. For example, various elements or components may be combined or may be integrated into another device, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. Units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed to a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or partially contributed to by the prior art, or all or part of the technical solutions may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.