Multi-sending-receiving-point (TRP) cooperative communication method and related equipment

Abstract

The invention discloses a multi-sending-receiving-point TRP cooperative communication method and related equipment, and belongs to the technical field of communication. The method is applied to a service TRP, and comprises the following steps: sending a plurality of candidate calibration weight groups to a cooperative TRP; sending first channel state information reference signals corresponding to the plurality of candidate weight groups to a target terminal; determining a target calibration weight group in the plurality of candidate calibration weight groups according to RSRP resource indication information fed back by the target terminal based on the first channel state information reference signal; and sending the target calibration weight group to the cooperative TRP to enable the cooperative TRP to calibrate a second antenna of the cooperative TRP according to the target calibration weight group. Therefore, the influence of time delay or phase deviation of signals transmitted by the cooperative TRP and the service TRP on the downlink channel quality of the target terminal can be reduced, and the performance gain effect of multi-TRP cooperative communication is improved.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of communication technologies, and in particular, to a method and related devices for multi-Transmission Reception Point (TRP) coordinated communication. Background Art

[0002] Cellular mobile communication systems usually center around base stations, and each base station only serves its own affiliated users, resulting in users at the cell edge being interfered by multiple neighboring cells, with poor system performance and user perception.

[0003] Currently, the main technology to solve the perception of edge users is the Coordinated Multiple Points (CoMP) technology. In CoMP technology, instead of a single Transmission Reception Point (TRP) serving a target terminal, multiple TRPs jointly serve the same target terminal centered around the target terminal. For example, multiple TRPs send the same data stream to the same target terminal to improve the reliability of data transmission. Summary of the Invention

[0004] Embodiments of the present application provide a method and related devices for multi-TRP coordinated communication to solve the problem that in the process of multi-TRP coordinated communication, there are time delay and phase deviation in the signals transmitted by different TRPs, and the performance gain effect is not ideal.

[0005] In a first aspect, embodiments of the present application provide a method for multi-TRP coordinated communication, which is applied to a serving TRP and includes:

[0006] Sending multiple candidate calibration weight groups to a cooperating TRP, so that the cooperating TRP coordinates with the serving TRP to send first channel state information reference signals corresponding to the multiple candidate calibration weight groups to a target terminal;

[0007] Sending first channel state information reference signals corresponding to the multiple candidate weight groups to the target terminal;

[0008] Determining a target calibration weight group among the multiple candidate calibration weight groups according to the RSRP resource indication information fed back by the target terminal based on the first channel state information reference signals;

[0009] Sending the target calibration weight group to the cooperating TRP, so that the cooperating TRP calibrates the second antenna of the cooperating TRP according to the target calibration weight group.

[0010] In a second aspect, embodiments of the present application provide a method for multi-TRP coordinated communication, which is applied to a cooperating TRP and includes:

[0011] Receive multiple candidate calibration weight groups sent by the serving TRP;

[0012] Send first channel state information reference signals corresponding to the multiple candidate calibration weight groups to the target terminal;

[0013] Receive the target candidate calibration weight group among the multiple candidate calibration weight groups sent by the serving TRP; wherein, the target candidate calibration weight group is determined by the serving TRP according to the RSRP resource indication information fed back by the target terminal;

[0014] Calibrate the second antenna of the cooperative TRP according to the target candidate calibration weight group.

[0015] In a third aspect, an embodiment of the present application provides a method for multi-transmit receive point (TRP) cooperative communication, which is applied to a target terminal and includes:

[0016] Receive multiple groups of first channel state information reference signals sent by the serving TRP and the cooperative TRP; wherein, each group of the first channel state information reference signals corresponds to a candidate calibration weight group, and the candidate calibration weight group is any one of the multiple candidate calibration weight groups;

[0017] Measure the RSRP of the resources corresponding to the multiple groups of first channel state information reference signals, determine the RSRP resource indication information corresponding to the target RSRP among the multiple RSRPs; send the RSRP resource indication information to the serving TRP, so that the serving TRP determines the target calibration weight group among the multiple candidate calibration weight groups according to the RSRP resource indication information.

[0018] In a fourth aspect, an embodiment of the present application provides a TRP device, including:

[0019] A first sending module, configured to send multiple candidate calibration weight groups to the cooperative TRP, so that the cooperative TRP cooperates with the serving TRP to send first channel state information reference signals corresponding to the multiple candidate calibration weight groups to the target terminal;

[0020] A second sending module, configured to send first channel state information reference signals corresponding to the multiple candidate weight groups to the target terminal;

[0021] A determining module, configured to determine the target calibration weight group among the multiple candidate calibration weight groups according to the RSRP resource indication information fed back by the target terminal based on the first channel state information reference signals;

[0022] A third transmission module, configured to transmit the target calibration weight group to the cooperating TRP, so that the cooperating TRP calibrates the second antenna of the cooperating TRP according to the target calibration weight group.

[0023] In a fifth aspect, an embodiment of the present application provides a TRP device, including:

[0024] A first transceiver module, configured to receive multiple candidate calibration weight groups sent by a serving TRP;

[0025] Send first channel state information reference signals corresponding to the multiple candidate calibration weight groups to a target terminal;

[0026] Receive a target candidate calibration weight group among the multiple candidate calibration weight groups sent by the serving TRP; wherein, the target candidate calibration weight group is determined by the serving TRP according to RSRP resource indication information fed back by the target terminal;

[0027] A calibration module, configured to calibrate the second antenna of the cooperating TRP according to the target candidate calibration weight group.

[0028] In a sixth aspect, an embodiment of the present application provides a terminal, including:

[0029] A second transceiver module, configured to receive multiple groups of first channel state information reference signals sent by a serving TRP and a cooperating TRP; wherein, each group of the first channel state information reference signals corresponds to a candidate calibration weight group, and the candidate calibration weight group is any one of the multiple candidate calibration weight groups;

[0030] Send the RSRP resource indication information to the serving TRP, so that the serving TRP determines a target calibration weight group among the multiple candidate calibration weight groups according to the RSRP resource indication information;

[0031] A measurement module, configured to measure the RSRP of the resources corresponding to the multiple groups of first channel state information reference signals, and determine the RSRP resource indication information corresponding to the target RSRP among the multiple RSRPs.

[0032] In a seventh aspect, an embodiment of the present application provides an electronic device, including a processor and a memory, where the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect or the second aspect or the third aspect above are implemented.

[0033] In an eighth aspect, an embodiment of the present application provides a readable storage medium, where a program or instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect or the second aspect or the third aspect above are implemented.

[0034] In an embodiment of the present application, the serving TRP sends multiple candidate calibration weight groups to the cooperating TRP, so that the cooperating TRP cooperates with the serving TRP to send first channel state information reference signals corresponding to the multiple candidate calibration weight groups to the target terminal; the serving TRP sends first channel state information reference signals corresponding to the multiple candidate weight groups to the target terminal; determines a target calibration weight group among the multiple candidate calibration weight groups according to the RSRP resource indication information fed back by the target terminal based on the first channel state information reference signal; and sends the target calibration weight group to the cooperating TRP, so that the cooperating TRP calibrates the second antenna of the cooperating TRP according to the target calibration weight group. In this way, the serving TRP can obtain a target calibration weight group that better matches the downlink channel quality of the target terminal from the multiple candidate calibration weight groups. Furthermore, the cooperating TRP calibrates the second antenna of the cooperating TRP according to the target calibration weight group, which can reduce the impact of the time delay or phase deviation of the signals transmitted by the cooperating TRP and the serving TRP on the downlink channel quality of the target terminal, and improve the performance gain effect of multi-TRP cooperative communication.

[0035] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0037] Figure 1 Shows a schematic flowchart of a method for multi-transmitter and receiver point (TRP) cooperative communication provided by an embodiment of the present application;

[0038] Figure 2 Shows a schematic diagram of a multi-TRP cooperative communication scenario provided by an embodiment of the present application;

[0039] Figure 3 Shows a schematic diagram of calibrating the second antenna of the cooperating TRP provided by an embodiment of the present application;

[0040] Figure 4 Shows a schematic diagram of coherent shaping transmission provided by an embodiment of the present application;

[0041] Figure 5 Shows a schematic flowchart of another method for multi-TRP cooperative communication provided by an embodiment of the present application;

[0042] Figure 6 Shows a schematic flowchart of yet another method for multi-TRP cooperative communication provided by an embodiment of the present application;

[0043] Figure 7 The figure shows a schematic structural diagram of a TRP device provided by an embodiment of the present application;

[0044] Figure 8 The figure shows a schematic structural diagram of another TRP device provided by an embodiment of the present application;

[0045] Figure 9 The figure shows a schematic structural diagram of a terminal provided by an embodiment of the present application;

[0046] Figure 10 The figure shows a schematic structural diagram of a multi-transmit receive point (TRP) coordinated communication system provided by an embodiment of the present application;

[0047] Figure 11 The figure shows a schematic structural diagram of an electronic device provided by an embodiment of the present application. Detailed implementation manners

[0048] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0049] In wireless communication, the Coordinated Multiple Points (CoMP) technology can be used to improve the quality of service of cell-edge users and increase the cell-edge throughput by jointly scheduling the interaction of measurement and data information between adjacent cells. In the CoMP technology, multiple TRPs (such as serving TRP and cooperating TRP) jointly provide services for the same target terminal. Among them, the TRP corresponding to the serving cell where the target terminal is located is called the serving TRP, and those other than the serving TRP that also provide services for the target terminal are called cooperating TRPs. When the target terminal is at the cell edge, the serving TRP and the cooperating TRP respectively send downlink data to the target terminal to improve the signal quality of the target terminal at the cell edge.

[0050] However, the distances between different TRPs and the target terminal are different, and there are time delays or phase deviations in the signals transmitted by the serving TRP and the cooperating TRP, resulting in an unsatisfactory performance gain effect of multi-TRP coordinated communication.

[0051] In view of the problems existing in the above multi-transmit receive point (TRP) cooperative communication process, an embodiment of the present application provides a method for multi-TRP cooperative communication. The serving TRP and the cooperating TRP jointly send a first channel state information reference signal to the target terminal. The serving TRP selects a target calibration weight group that better matches the downlink channel quality of the target terminal from multiple candidate calibration weight groups according to the RSRP resource indication information fed back by the target terminal. Then, the cooperating TRP calibrates the second antenna according to the target calibration weight group, so as to reduce the influence of the time delay or phase deviation of the signals transmitted by the cooperating TRP and the serving TRP on the downlink channel quality of the target terminal, and improve the performance gain effect of multi-TRP cooperative communication.

[0052] Please refer to Figure 1 , Figure 1 which shows a schematic flowchart of a method for multi-TRP cooperative communication provided by an embodiment of the present application. This method 100 is applied to the serving TRP and may include the following steps:

[0053] S101: Send multiple candidate calibration weight groups to the cooperating TRP, so that the cooperating TRP cooperates with the serving TRP to send the first channel state information reference signals corresponding to the multiple candidate calibration weight groups to the target terminal;

[0054] S102: Send the first channel state information reference signals corresponding to the multiple candidate weight groups to the target terminal;

[0055] S103: Determine the target calibration weight group among the multiple candidate calibration weight groups according to the RSRP resource indication information fed back by the target terminal based on the first channel state information reference signals;

[0056] S104: Send the target calibration weight group to the cooperating TRP, so that the cooperating TRP calibrates the second antenna of the cooperating TRP according to the target calibration weight group.

[0057] In an embodiment of the present application, the serving TRP and the cooperating TRP may be distributed in the base stations of the same cell, may be distributed in the same base station of different cells, or may be distributed in different base stations of different cells. In the above S101, the manner in which the serving TRP sends multiple candidate calibration weight groups to the cooperating TRP may include the following situations:

[0058] In a possible situation, when the serving TRP and the cooperating TRP belong to the same cell, multiple candidate calibration weight groups may be sent through the air interface between the serving TRP and the cooperating TRP;

[0059] In a possible scenario, when the serving TRP belongs to cell 1, the cooperating TRP belongs to cell 2, and cell 1 and cell 2 belong to the same base station, the serving TRP and the cooperating TRP can send multiple candidate calibration weight groups through the interface between cell 1 and cell 2 (e.g., the Xn interface);

[0060] In another possible scenario, when the serving TRP belongs to cell 1, the cooperating TRP belongs to cell 2, cell 1 belongs to base station 1, and cell 2 belongs to base station 2, the serving TRP and the cooperating TRP can send multiple candidate calibration weight groups through the interface between base station 1 and base station 2.

[0061] Taking the serving TRP and the cooperation being distributed in different base stations of different cells as an example, as Figure 2 shown, the serving TRP is distributed in base station A of the serving cell, and the cooperating TRP can be distributed in base station B of neighboring cell 1, base station C of neighboring cell 2, and base station D of neighboring cell 3. The serving TRP and the cooperating TRP can send multiple candidate calibration weight groups through the interface between the base stations.

[0062] In a possible implementation manner, the base station A of the serving cell can select the cooperating cell according to the A3 measurement report reported by the target terminal. Specifically, the base station A of the serving cell obtains the A3 measurement report sent by the target terminal. The A3 measurement report includes the configuration information of multiple neighboring cells corresponding to the serving cell and the reference signal receiving power (RSRP) of each neighboring cell; according to the A3 measurement report, select the neighboring cell whose configuration information and RSRP intensity meet the preset conditions from multiple neighboring cells as the cooperating cell, and the TRP corresponding to the cooperating cell is the cooperating TRP. Among them, the preset condition can be to use the neighboring cell with the same configuration information as the serving cell and the RSRP intensity exceeding the preset intensity threshold as the cooperating cell, or the preset condition can be to use the neighboring cell with the same configuration information as the serving cell and the maximum RSRP intensity among multiple neighboring cells as the cooperating cell. Here, the configuration information can be information such as the transceiver mode, frequency point, bandwidth, and time slot resources.

[0063] Furthermore, after determining the cooperating TRP, the serving TRP sends multiple candidate calibration weight groups to the cooperating TRP, so that the cooperating TRP cooperates with the serving TRP to send the first channel state information reference signal (Channel state information reference signal, CSI-RS) corresponding to the multiple candidate calibration weight groups to the target terminal; the serving TRP sends the first CSI-RS corresponding to the multiple candidate calibration weight groups to the target terminal. In this way, the serving TRP and the cooperating TRP respectively send the first CSI-RS corresponding to the multiple candidate calibration weight groups to the same target terminal.

[0064] The target terminal measures the RSRP of the resources corresponding to multiple groups of first CSI-RS received from the serving TRP and the cooperating TRP, obtains the RSRP resource indication information corresponding to the target RSRP among the multiple RSRP values, and sends the RSRP resource indication information to the serving TRP.

[0065] The serving TRP determines a target calibration weight group among multiple candidate calibration weight groups according to the RSRP resource indication information fed back by the target terminal based on the first CSI-RS; the target calibration weight group is the candidate calibration weight group indicated by the RSRP resource indication information. Furthermore, the serving TRP sends the target calibration weight group to the cooperating TRP, so that the cooperating TRP calibrates the second antenna of the cooperating TRP according to the target calibration weight group.

[0066] In this way, the serving TRP can obtain a target calibration weight group that better matches the downlink channel quality of the target terminal from multiple candidate calibration weight groups. Furthermore, the cooperating TRP calibrates the second antenna of the cooperating TRP according to the target calibration weight group, which can reduce the impact of the time delay or phase deviation of the signals transmitted by the cooperating TRP and the serving TRP on the downlink channel quality of the target terminal, and improve the performance gain effect of multi-TRP collaborative communication.

[0067] In a possible implementation manner, before the step S101 of sending multiple candidate calibration weight groups to the cooperating TRP, it further includes:

[0068] Sending first CSI-RS resource configuration information and first CSI feedback configuration information for RSRP (such as layer one reference signal received power L1-RSRP) reporting that match the capabilities of the target terminal to the target terminal, where the first CSI-RS resource configuration information is used to indicate the target terminal to receive CSI-RS resources, and the first CSI feedback configuration information is used to indicate the target terminal to feed back RSRP resource indication information after measuring the received CSI-RS resources.

[0069] In this way, when the serving TRP and the cooperating TRP send the first CSI-RS to the target terminal, the target terminal can measure the RSRP of the resources corresponding to the first CSI-RS and feed back the RSRP resource indication information to the serving TRP.

[0070] Among them, the multiple candidate calibration weight groups include a target calibration weight group, and the target calibration weight group is used to calibrate the time delay or phase deviation existing in the signals transmitted by the serving TRP and the cooperating TRP. In specific applications, the time delay or phase deviation of the transmitted signal can be converted into the phase difference of the corresponding downlink data in the frequency domain. In a possible implementation manner, the above-mentioned candidate calibration weight group includes a second calibration weight;

[0071] The second calibration weight is the calibration weight corresponding to the second antenna of the cooperative TRP; wherein, the second calibration weight is determined according to the first calibration weight corresponding to the first antenna of the serving TRP and the target phase difference, and the target phase difference is the phase difference between the second antenna and the first antenna.

[0072] In the embodiments of the present application, the serving TRP first designs T sets of candidate calibration weight groups for single-port, where T is a positive integer and can be selected according to actual needs. In each candidate calibration weight group, the first calibration weight corresponding to the first antenna of the serving TRP can be set to an initial value, here the initial value is defaulted to 1. Then, according to the initial value and the target phase difference, the second calibration weight corresponding to the second antenna of the cooperative TRP is determined, where the target phase difference is the phase difference between the second antenna and the first antenna. The candidate calibration weight group can be expressed as where x = 0 to T - 1. The first CSI-RS corresponding to the candidate calibration weight group is sent to the target terminal by shaping the first antenna of the serving TRP and the second antenna of the cooperative TRP with the candidate calibration weight. The target terminal feeds back the RSRP resource indication information cri-RSRP according to the channel measurement, where the target calibration weight group corresponding to cri is the aligned phase of the second antenna of the current cooperative TRP relative to the first antenna of the serving TRP.

[0073] It should be noted that in specific applications, there may be multiple first antennas of the serving TRP and second antennas of the cooperative TRP. Assuming that both the serving TRP and the cooperative TRP have M antennas, it is necessary to poll all the antennas of the serving TRP and the cooperative TRP to obtain the aligned phase, that is, for each antenna of the cooperative TRP, the corresponding target calibration weight group is obtained respectively. The target calibration weight group can be expressed as:

[0074]

[0075] Exemplarily, as Figure 3 shown, taking the scenario of a single cell with 4 antennas as an example, the first first antenna of the serving TRP and the first second antenna of the cooperative TRP send the first CSI-RS corresponding to T sets of candidate calibration weight groups to the target terminal, and the aligned phase of the first second antenna of the cooperative TRP is determined according to the cri-RSRP fed back by the target terminal; the second first antenna of the serving TRP and the second second antenna of the cooperative TRP send the first CSI-RS corresponding to T sets of candidate calibration weight groups to the target terminal, and the aligned phase of the second second antenna of the cooperative TRP is determined according to the cri-RSRP fed back by the target terminal. Repeating this process, polling all antennas, the aligned phases of all the second antennas of the cooperative TRP are obtained.

[0076] Furthermore, the first calibration weight corresponding to each first antenna of the serving TRP is 1, and the second calibration weight corresponding to each second antenna of the cooperating TRP is: The serving TRP may send the second calibration weight corresponding to the cooperating TRP in the target calibration weight to the cooperating TRP, so that the cooperating TRP calibrates the second antenna of the cooperating TRP according to the second calibration weight.

[0077] In a possible implementation manner, after the step S104 of sending the target calibration weight group to the cooperating TRP, so that the cooperating TRP calibrates the second antenna of the cooperating TRP according to the target calibration weight group, it further includes:

[0078] S105: Send the second channel state information reference signal corresponding to the target calibration weight group to the target terminal;

[0079] S106: Receive the precoding matrix indicator fed back by the target terminal based on the second channel state information reference signal;

[0080] S107: Perform precoding on the service channel data to be transmitted according to the target calibration weight group and the precoding matrix indicator.

[0081] In the embodiment of the present application, after the serving TRP sends the target calibration weight group to the cooperating TRP, the serving TRP and the cooperating TRP respectively compensate the target calibration weight group to the corresponding resources of the CSI-RS to obtain the second CSI-RS corresponding to the target calibration weight group, and send the second CSI-RS to the target terminal.

[0082] In a specific application, the second CSI-RS sent by the serving TRP and the cooperating TRP is at the same time-frequency position and uses the same port and scrambling code sequence to ensure the consistency of other parameters of the two groups of second CSI-RS except the target calibration weight group.

[0083] The target terminal measures the resources corresponding to the second CSI-RS and reports the optimal cri-RI-PMI-CQI to the serving TRP, where the cri-RI-PMI-CQI includes a precoding matrix indicator (Precoding Matrix Indicator, PMI), and the PMI is the coherent beamforming weight between cells.

[0084] The serving TRP multiplies the target calibration weight group and the precoding matrix indicator PMI to obtain the beamforming weight, performs weighting processing on the service channel data to be transmitted according to the beamforming weight, and sends the weighted service channel data to the target terminal to improve the effectiveness of data transmission.

[0085] In a possible implementation manner, before sending the second channel state information reference signal corresponding to the target calibration weight group to the target terminal in step S105 above, it further includes:

[0086] Sending second CSI-RS resource configuration information and second CSI feedback configuration information for PMI reporting that match the capabilities of the target terminal to the target terminal, where the second CSI-RS resource configuration information is used to instruct the target terminal to receive CSI-RS resources, and the second CSI feedback configuration information is used to instruct the target terminal to feed back a precoding matrix indicator PMI after measuring the received CSI-RS resources.

[0087] In this way, when the serving TRP and the cooperating TRP respectively send the second CSI-RS to the target terminal, the target terminal can feed back the precoding matrix indicator after receiving the second CSI-RS and measuring the resources corresponding to the second CSI-RS.

[0088] In a possible implementation manner, after precoding the service channel data to be transmitted according to the target calibration weight group and the precoding matrix indicator in step S107 above, it further includes:

[0089] Sending the precoding matrix indicator and the service channel data to the cooperating TRP, so that the cooperating TRP precodes the service channel data according to the target calibration weight group and the precoding matrix indicator.

[0090] In the embodiments of the present application, as Figure 4 shown, taking the base station B in neighboring area 1 where the cooperating TRP is distributed as an example, the base station A sends the target calibration weight group, the precoding matrix indicator PMI, and the TB data of the service channel PDSCH to be transmitted to the base station B. The cooperating TRP corresponding to the base station B multiplies the target calibration weight group and the PMI to obtain the beamforming weight; the service channel data to be transmitted is weighted according to the beamforming weight, and the weighted service channel data is sent to the target terminal, which can improve the spectral efficiency and perception rate of edge users.

[0091] Please refer to Figure 5 , Figure 5 which shows a schematic flowchart of another method for multi-transmitter and receiver point TRP cooperative communication provided by the embodiments of the present application. This method 500 is applied to the cooperating TRP and may include the following steps:

[0092] S501: Receiving multiple candidate calibration weight groups sent by the serving TRP;

[0093] S502: Sending first channel state information reference signals corresponding to the multiple candidate calibration weight groups to the target terminal;

[0094] S503: Receive the target candidate calibration weight group among the multiple candidate calibration weight groups sent by the serving TRP; wherein, the target candidate calibration weight group is determined by the serving TRP according to the RSRP resource indication information fed back by the target terminal;

[0095] S504: Calibrate the second antenna of the cooperative TRP according to the target candidate calibration weight group.

[0096] In the embodiment of the present application, the cooperative TRP first receives the multiple candidate calibration weight groups sent by the serving TRP. The candidate calibration weight group can be expressed as where x = 0 to T - 1. Then, use the multiple candidate calibration weight groups to perform beamforming on the second antenna, and the cooperative serving TRP sends the first channel state information reference signal CSI-RS corresponding to each candidate calibration weight group to the target terminal.

[0097] The target terminal measures the RSRP of the resources corresponding to the multiple groups of first CSI-RS by receiving the multiple groups of first CSI-RS sent by the serving TRP and the cooperative TRP, obtains the RSRP resource indication information corresponding to the target RSRP among the multiple RSRPs, and sends the RSRP resource indication information to the serving TRP.

[0098] The cooperative TRP receives the target candidate calibration weight group among the multiple candidate calibration weight groups sent by the serving TRP; calibrate the second antenna of the cooperative TRP according to the target candidate calibration weight group.

[0099] In a possible implementation manner, in the above step S504, after calibrating the second antenna of the cooperative TRP according to the target candidate calibration weight group, it further includes:

[0100] S505: Send the second channel state information reference signal corresponding to the target calibration weight group to the target terminal;

[0101] S506: Receive the precoding matrix indicator and the traffic channel data sent by the serving TRP; wherein, the precoding matrix indicator is fed back by the target terminal for the received second channel state information reference signal,

[0102] S507: Perform precoding on the traffic channel data according to the target calibration weight group and the precoding matrix indicator.

[0103] In the embodiment of the present application, the cooperative TRP compensates the target calibration weight group to the resources corresponding to the CSI-RS, obtains the second CSI-RS corresponding to the target calibration weight group, and sends the second CSI-RS to the target terminal.

[0104] The target terminal measures the resources corresponding to the second CSI-RS and reports the optimal cri-RI-PMI-CQI to the serving TRP, where the cri-RI-PMI-CQI includes a precoding matrix indicator (PMI), and the PMI is the coherent beamforming weight between cells.

[0105] The cooperating TRP receives the precoding matrix indicator and traffic channel data sent by the serving TRP; precodes the traffic channel data according to the target calibration weight group and the precoding matrix indicator. Specifically, the cooperating TRP can multiply the target calibration weight group by the precoding matrix indicator PMI to obtain the beamforming weight, perform weighted processing on the traffic channel data to be transmitted according to the beamforming weight, and send the weighted traffic channel data to the target terminal to improve the effectiveness of data transmission.

[0106] In a possible implementation manner, in the above step S505, sending the second channel state information reference signal corresponding to the target calibration weight group to the target terminal includes:

[0107] Shape the second antenna of the cooperating TRP according to the target calibration weight group, and send the second channel state information reference signal to the target terminal through the shaped second antenna.

[0108] In the embodiment of the present application, the cooperating TRP can shape the second antenna according to the target calibration weight group, and send the second CSI-RS to the target terminal through the shaped second antenna, so that the target terminal measures the resources corresponding to the second CSI-RS according to the second CSI-RS sent by the serving TRP and the cooperating TRP, and then feeds back the coherent beamforming weight PMI between cells.

[0109] In this way, the serving TRP can obtain a target calibration weight group that better matches the downlink channel quality of the target terminal from multiple candidate calibration weight groups. The cooperating TRP calibrates the second antenna of the cooperating TRP according to the target calibration weight group sent by the serving TRP, which can reduce the impact of the time delay or phase deviation of the signals transmitted by the cooperating TRP and the serving TRP on the downlink channel quality of the target terminal, and improve the performance gain effect of multi-TRP cooperative communication.

[0110] Please refer to Figure 6 , Figure 6 which shows a schematic flowchart of another method for multi-transmit and receive point (TRP) cooperative communication provided by the embodiment of the present application. This method 600 is applied to a target terminal and may include the following steps:

[0111] S601: Receive multiple groups of first channel state information reference signals sent by a serving TRP and a cooperating TRP; wherein, each group of the first channel state information reference signals corresponds to a candidate calibration weight group, and the candidate calibration weight group is any one of multiple candidate calibration weight groups;

[0112] S602: Measure the RSRP of the resources corresponding to the multiple groups of first channel state information reference signals, and determine the RSRP resource indication information corresponding to the target RSRP among the multiple RSRPs; send the RSRP resource indication information to the serving TRP, so that the serving TRP determines the target calibration weight group among the multiple candidate calibration weight groups according to the RSRP resource indication information.

[0113] In the embodiment of the present application, the target terminal receives multiple groups of first CSI-RSs sent by the serving TRP and the cooperating TRP; measures the RSRP of the resources corresponding to the multiple groups of first CSI-RSs, and determines the RSRP resource indication information corresponding to the target RSRP among the multiple RSRPs; sends the RSRP resource indication information to the serving TRP. Here, the target terminal can measure and determine the first CSI-RS with the strongest RSRP of the resources corresponding to the multiple groups of first CSI-RSs, and feedback the RSRP resource indication information corresponding to the first CSI-RS with the strongest RSRP to the cooperating TRP.

[0114] In a possible implementation manner, before step S601 of receiving multiple groups of first channel state information reference signals sent by the serving TRP and the cooperating TRP, it further includes:

[0115] Receive the first CSI-RS resource configuration information and the first CSI feedback configuration information sent by the serving TRP for RSRP (such as layer 1 reference signal received power L1-RSRP) reporting, wherein the first CSI-RS resource configuration information is used to indicate the target terminal to receive the CSI-RS resource, and the first CSI feedback configuration information is used to indicate the target terminal to feedback the RSRP resource indication information after measuring the received CSI-RS resource. So that when the target terminal receives the first CSI-RS sent by the serving TRP and the cooperating TRP, it measures the RSRP of the resources corresponding to the first CSI-RS and feedbacks the RSRP resource indication information to the serving TRP.

[0116] In this way, the target calibration weight group for calibrating the second antenna of the cooperative TRP is selected from multiple candidate calibration weight groups according to the RSRP resource indication information fed back by the target terminal, without calibrating the second antenna of the cooperative TRP through a hardware device, which can reduce the hardware cost. Moreover, the serving TRP can obtain a target calibration weight group that better matches the downlink channel quality of the target terminal from multiple candidate calibration weight groups, and then calibrate the second antenna of the cooperative TRP according to the target calibration weight group, which can reduce the impact of the time delay or phase deviation of the signals transmitted by the cooperative TRP and the serving TRP on the downlink channel quality of the target terminal, and improve the performance gain effect of multi-TRP cooperative communication.

[0117] In a possible implementation manner, the above method 600 further includes:

[0118] Receiving second channel state information reference signals sent by the serving TRP and the cooperative TRP;

[0119] Measuring the resources corresponding to the second channel state information reference signals to determine a precoding matrix indicator;

[0120] Sending the precoding matrix indicator to the serving TRP, so that the serving TRP precodes the service channel data to be transmitted according to the precoding matrix indicator.

[0121] In the embodiments of the present application, the target terminal measures the resources corresponding to the second CSI-RS, and reports the optimal cri-RI-PMI-CQI to the serving TRP, where the cri-RI-PMI-CQI includes a precoding matrix indicator (Precoding Matrix Index, PMI), and the PMI is the coherent beamforming weight between cells.

[0122] In a possible implementation manner, before receiving the second channel state information reference signals sent by the serving TRP and the cooperative TRP, it further includes:

[0123] Receiving second CSI-RS resource configuration information and second CSI feedback configuration information for PMI reporting sent by the serving TRP, where the second CSI-RS resource configuration information is used to indicate the target terminal to receive CSI-RS resources, and the second CSI feedback configuration information is used to indicate the target terminal to feedback the precoding matrix indicator PMI after measuring the received CSI-RS resources. So that after the target terminal receives the second CSI-RS sent by the serving TRP and the cooperative TRP and measures the resources corresponding to the second CSI-RS, it feeds back the precoding matrix indicator.

[0124] Please refer to Figure 7 , Figure 7The figure shows a schematic structural diagram of a TRP device provided by an embodiment of the present application. The TRP device 700 can implement all or part of the content in the embodiment as shown in Figure 1 The TRP device 700 includes:

[0125] A first sending module 710, configured to send multiple candidate calibration weight groups to a cooperating TRP, so that the cooperating TRP cooperates with the serving TRP to send first channel state information reference signals corresponding to the multiple candidate calibration weight groups to a target terminal;

[0126] A second sending module 720, configured to send first channel state information reference signals corresponding to the multiple candidate weight groups to the target terminal;

[0127] A determining module 730, configured to determine a target calibration weight group among the multiple candidate calibration weight groups according to RSRP resource indication information fed back by the target terminal based on the first channel state information reference signals;

[0128] A third sending module 740, configured to send the target calibration weight group to the cooperating TRP, so that the cooperating TRP calibrates a second antenna of the cooperating TRP according to the target calibration weight group.

[0129] Wherein, the candidate calibration weight group includes a second calibration weight;

[0130] The second calibration weight is a calibration weight corresponding to a second antenna of the cooperating TRP; wherein, the second calibration weight is determined according to a first calibration weight corresponding to a first antenna of the serving TRP and a target phase difference, and the target phase difference is a phase difference of the second antenna relative to the first antenna.

[0131] In a possible implementation manner, the above-mentioned TRP device 700 further includes:

[0132] A fifth sending module, configured to send a second channel state information reference signal corresponding to the target calibration weight group to the target terminal;

[0133] A receiving module, configured to receive a precoding matrix indicator fed back by the target terminal based on the second channel state information reference signal;

[0134] A first precoding module, configured to precode service channel data to be transmitted according to the target calibration weight group and the precoding matrix indicator.

[0135] In a possible implementation manner, the above-mentioned TRP device 700 further includes:

[0136] A sixth sending module, configured to send the precoding matrix indicator and the traffic channel data to a cooperating TRP, so that the cooperating TRP precodes the traffic channel data according to the target calibration weight group and the precoding matrix indicator.

[0137] Please refer to Figure 8 , Figure 8 which shows a schematic structural diagram of another TRP device provided by an embodiment of the present application; the TRP device 700 can implement all or part of the content in the Figure 5 shown embodiment. The TRP device 800 includes:

[0138] A first transceiver module 810, configured to receive multiple candidate calibration weight groups sent by a serving TRP;

[0139] Send first channel state information reference signals corresponding to the multiple candidate calibration weight groups to a target terminal;

[0140] Receive a target candidate calibration weight group among the multiple candidate calibration weight groups sent by the serving TRP; wherein, the target candidate calibration weight group is determined by the serving TRP according to RSRP resource indication information fed back by the target terminal;

[0141] A calibration module 820, configured to calibrate a second antenna of the cooperating TRP according to the target candidate calibration weight group.

[0142] In a possible implementation manner, the above-mentioned TRP device 800 further includes:

[0143] A third transceiver module, configured to send second channel state information reference signals corresponding to the target calibration weight group to the target terminal;

[0144] Receive a precoding matrix indicator and traffic channel data sent by the serving TRP; wherein, the precoding matrix indicator is fed back by the target terminal for the received second channel state information reference signal;

[0145] A second precoding module, configured to precode the traffic channel data according to the target calibration weight group and the precoding matrix indicator.

[0146] Wherein, when the third transceiver module is configured to send second channel state information reference signals corresponding to the target calibration weight group to the target terminal, it is specifically configured to:

[0147] Shape the second antenna of the cooperating TRP according to the multiple candidate calibration weight groups, and send the second channel state information reference signal to the target terminal through the shaped second antenna.

[0148] Please refer to Figure 9 , Figure 9 which shows a schematic structural diagram of a terminal provided by an embodiment of the present application; the terminal 900 can implement all or part of the content in the embodiment as Figure 6 shown. The terminal 900 includes:

[0149] A second transceiver module 910, configured to receive multiple groups of first channel state information reference signals sent by a serving TRP and a cooperating TRP; wherein, each group of the first channel state information reference signals corresponds to a candidate calibration weight group, and the candidate calibration weight group is any one of multiple candidate calibration weight groups;

[0150] Send the RSRP resource indication information to the serving TRP, so that the serving TRP determines a target calibration weight group among the multiple candidate calibration weight groups according to the RSRP resource indication information;

[0151] A measurement module 920, configured to measure the RSRP of the resources corresponding to the multiple groups of first channel state information reference signals, and determine the RSRP resource indication information corresponding to the target RSRP among the multiple RSRPs.

[0152] Please refer to Figure 10 , Figure 10 which shows a schematic structural diagram of a multi-transmit receive point (TRP) cooperative communication system provided by an embodiment of the present application. The multi-transmit receive point (TRP) cooperative communication system includes a base station and a user terminal; wherein, the base station is distributed with a serving TRP corresponding to a serving cell and a cooperating TRP corresponding to a cooperating cell, and is configured to send CSI-RS resource configurations and CSI feedback configurations for L1-RSRP reporting and PMI reporting to the terminal; receive channel measurement feedbacks cri-RSRP and cri-RI-PMI-CQI from the terminal, and obtain a target calibration weight group between cells, and perform coherent beamforming transmission on traffic channel data; the terminal is configured to measure CSI-RS and feed back the measured CSI to the base station.

[0153] Wherein, the base station includes a resource allocation module, a third transceiver module, a decision module, and a cooperation module; the resource allocation module is configured to allocate CSI-RS resources for L1-RSRP reporting and PMI reporting to the terminal; the third transceiver module is configured to transmit CSI signals, downlink traffic channel data, and receive channel measurement feedbacks cri-RSRP and cri-RI-PMI-CQI from the terminal; the decision module is configured to obtain a target calibration weight group between cells based on the cri-RSRP reported by the terminal; the cooperation module is configured to perform coherent beamforming on the traffic channel based on the cri-RI-PMI-CQI reported by the terminal and the target calibration weight group.

[0154] The user terminal includes a fourth transceiver module and a second measurement module; the fourth transceiver module is used to receive the CSI-RS measurement and CSI feedback configuration and downlink service channel data sent by the base station, and transmit the channel measurements cri-RSRP and cri-RI-PMI-CQI to the base station; the second measurement module is used to measure the downlink channel quality.

[0155] In this way, the base station can obtain a target calibration weight group that better matches the downlink channel quality of the target terminal, and then calibrate the second antenna of the cooperative TRP according to the target calibration weight group, which can reduce the impact of the time delay or phase deviation of the signals transmitted by the cooperative TRP and the serving TRP on the downlink channel quality of the target terminal, and improve the performance gain effect of multi-TRP cooperative communication.

[0156] Figure 11 The figure shows a schematic hardware structure diagram of the electronic device provided by the embodiment of the present application. Referring to this figure, at the hardware level, the electronic device includes a processor, and optionally, an internal bus, a network interface, and a memory. Among them, the memory may include internal memory, such as high-speed random access memory (Random-Access Memory, RAM), and may also include non-volatile memory, such as at least one disk memory, etc. Of course, the electronic device may also include other hardware required for other services.

[0157] The processor, network interface, and memory can be interconnected through the internal bus. The internal bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of simplicity, only a bidirectional arrow is used in this figure to represent it, but it does not mean that there is only one bus or one type of bus.

[0158] The memory stores programs. Specifically, the program may include program code, and the program code includes computer operation instructions. The memory may include internal memory and non-volatile memory, and provide instructions and data to the processor.

[0159] The processor reads the corresponding computer program from the non-volatile memory into the internal memory and then runs it, forming a device for locating the target user at the logical level. The processor executes the program stored in the memory and specifically executes: Figure 1 or Figure 5 orFigure 6 The method disclosed in the illustrated embodiment realizes the functions and beneficial effects of the various methods described in the foregoing method embodiments, and will not be elaborated herein.

[0160] As described in this application Figure 1 or Figure 5 or Figure 6 The method disclosed in the illustrated embodiment can be applied to or implemented by a processor. The processor may be an integrated circuit chip with signal processing capabilities. During implementation, the steps of the foregoing method can be completed by the integrated logic circuit in the hardware of the processor or instructions in software form. The foregoing processor may be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc.; it may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. It can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in combination with the embodiments of this application can be directly implemented by the execution of the hardware decoding processor, or implemented by the combination of the hardware and software modules in the decoding processor. The software module may be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. This storage medium is located in the memory, and the processor reads the information in the memory and combines its hardware to complete the steps of the foregoing method.

[0161] This computer device can also execute the various methods described in the foregoing method embodiments and realize the functions and beneficial effects of the various methods described in the foregoing method embodiments, and will not be elaborated herein.

[0162] Of course, in addition to the software implementation, the electronic device of this application does not exclude other implementation manners, such as a logic device or a combination of software and hardware, etc. That is to say, the execution subject of the following processing flow is not limited to each logic unit, and may also be hardware or a logic device.

[0163] Embodiments of the present application also propose a computer-readable storage medium storing one or more programs, which when executed by an electronic device including multiple application programs, cause the electronic device to execute Figure 1 or Figure 5 or Figure 6 the methods disclosed in the illustrated embodiments and achieve the functions and beneficial effects of the various methods described in the foregoing method embodiments, which will not be elaborated herein.

[0164] Among them, the computer-readable storage medium includes a read-only memory (ROM), a random access memory (RAM), a magnetic disk, an optical disk, etc.

[0165] Furthermore, embodiments of the present application also provide a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions that, when executed by a computer, implement the following process: Figure 1 or Figure 5 or Figure 6 the methods disclosed in the illustrated embodiments and achieve the functions and beneficial effects of the various methods described in the foregoing method embodiments, which will not be elaborated herein.

[0166] Embodiments of the present application can be applied to various scenarios of electronic device collaboration or interconnection, including: collaboration and interconnection between a mobile phone and a laptop / tablet computer; collaboration and interconnection between a mobile terminal and a smart TV / display; collaboration and interconnection between a mobile phone or a tablet computer and an in-vehicle entertainment system; collaboration and interconnection between a mobile terminal and a smart conference system, etc. Thus, it can meet the diverse scenario requirements of users in smart home, smart office, smart travel, etc.

[0167] In summary, the above are only the preferred embodiments of the present application and do not limit the protection scope of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

[0168] The systems, devices, modules, or units illustrated in the above embodiments can be specifically implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer. Specifically, the computer can be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or any combination of these devices.

[0169] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0170] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0171] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

Claims

1. A method for multi-transmitter and receiver point (TRP) cooperative communication, applied to a serving TRP, characterized in that, it includes: Sending multiple candidate calibration weight groups to a cooperating TRP, so that the cooperating TRP cooperates with the serving TRP to send first channel state information reference signals corresponding to the multiple candidate calibration weight groups to a target terminal; Sending the first channel state information reference signals corresponding to the multiple candidate weight groups to the target terminal; Determining a target calibration weight group among the multiple candidate calibration weight groups according to the RSRP resource indication information fed back by the target terminal based on the first channel state information reference signals; Sending the target calibration weight group to the cooperating TRP, so that the cooperating TRP calibrates the second antenna of the cooperating TRP according to the target calibration weight group.

2. The method according to claim 1, characterized in that, the candidate calibration weight group includes a second calibration weight; the second calibration weight is the calibration weight corresponding to the second antenna of the cooperating TRP; wherein, the second calibration weight is determined according to the first calibration weight corresponding to the first antenna of the serving TRP and a target phase difference, and the target phase difference is the phase difference of the second antenna relative to the first antenna.

3. The method according to claim 1, characterized in that, it further includes: Sending a second channel state information reference signal corresponding to the target calibration weight group to the target terminal; Receiving a precoding matrix indicator fed back by the target terminal based on the second channel state information reference signal; Precoding the service channel data to be transmitted according to the target calibration weight group and the precoding matrix indicator.

4. The method according to claim 3, characterized in that, it further includes: Sending the precoding matrix indicator and the service channel data to the cooperating TRP, so that the cooperating TRP precodes the service channel data according to the target calibration weight group and the precoding matrix indicator.

5. A method for multi-transmitter and receiver point (TRP) cooperative communication, applied to a cooperating TRP, characterized in that, it includes: Receiving multiple candidate calibration weight groups sent by a serving TRP; Sending first channel state information reference signals corresponding to the multiple candidate calibration weight groups to a target terminal; Receiving a target candidate calibration weight group among the multiple candidate calibration weight groups sent by the serving TRP; wherein, the target candidate calibration weight group is determined by the serving TRP according to the RSRP resource indication information fed back by the target terminal; Calibrating the second antenna of the cooperating TRP according to the target candidate calibration weight group.

6. The method according to claim 5, characterized in that, it further includes: Sending a second channel state information reference signal corresponding to the target calibration weight group to the target terminal; Receiving the precoding matrix indicator and the service channel data sent by the serving TRP; wherein, the precoding matrix indicator is fed back by the target terminal for the received second channel state information reference signal. Precoding the service channel data according to the target calibration weight group and the precoding matrix indicator.

7. The method according to claim 6, wherein, sending the second channel state information reference signal corresponding to the target calibration weight group to the target terminal includes: shaping the second antenna of the cooperative TRP according to the target calibration weight group, and sending the second channel state information reference signal to the target terminal through the shaped second antenna.

8. A method for multi-transmit receive point (TRP) cooperative communication, applied to a target terminal, wherein, it includes: receiving multiple groups of first channel state information reference signals sent by a serving TRP and a cooperative TRP; wherein, each group of the first channel state information reference signals corresponds to a candidate calibration weight group, and the candidate calibration weight group is any one of multiple candidate calibration weight groups; measuring the RSRP of the resources corresponding to the multiple groups of first channel state information reference signals, determining the RSRP resource indication information corresponding to the target RSRP among the multiple RSRPs; sending the RSRP resource indication information to the serving TRP, so that the serving TRP determines the target calibration weight group among the multiple candidate calibration weight groups according to the RSRP resource indication information.

9. The method according to claim 8, wherein, it further includes: receiving the second channel state information reference signal sent by the serving TRP and the cooperative TRP; measuring the resources corresponding to the second channel state information reference signal, determining a precoding matrix indicator; sending the precoding matrix indicator to the serving TRP, so that the serving TRP precodes the service channel data to be transmitted according to the precoding matrix indicator.

10. A TRP device, wherein, it includes: a first sending module, configured to send multiple candidate calibration weight groups to a cooperative TRP, so that the cooperative TRP cooperates with the serving TRP to send the first channel state information reference signal corresponding to the multiple candidate calibration weight groups to a target terminal; a second sending module, configured to send the first channel state information reference signal corresponding to the multiple candidate weight groups to the target terminal; a determining module, configured to determine the target calibration weight group among the multiple candidate calibration weight groups according to the RSRP resource indication information fed back by the target terminal based on the first channel state information reference signal; a third sending module, configured to send the target calibration weight group to the cooperative TRP, so that the cooperative TRP calibrates the second antenna of the cooperative TRP according to the target calibration weight group.

11. A TRP device, wherein, it includes: a first transceiver module, configured to receive multiple candidate calibration weight groups sent by a serving TRP; sending the first channel state information reference signal corresponding to the multiple candidate calibration weight groups to a target terminal; Receive the target candidate calibration weight group among the multiple candidate calibration weight groups sent by the serving TRP; wherein, the target candidate calibration weight group is determined by the serving TRP according to the RSRP resource indication information fed back by the target terminal. A calibration module, configured to calibrate the second antenna of the cooperating TRP according to the target candidate calibration weight group.

12. A terminal Characterized in that It includes: A second transceiver module, configured to receive multiple groups of first channel state information reference signals sent by a serving TRP and a cooperating TRP; wherein, each group of the first channel state information reference signals corresponds to a candidate calibration weight group, and the candidate calibration weight group is any one of the multiple candidate calibration weight groups. Send the RSRP resource indication information to the serving TRP, so that the serving TRP determines the target calibration weight group among the multiple candidate calibration weight groups according to the RSRP resource indication information. A measurement module, configured to measure the RSRP of the resources corresponding to the multiple groups of first channel state information reference signals, and determine the RSRP resource indication information corresponding to the target RSRP among the multiple RSRPs.

13. An electronic device Characterized in that The electronic device includes a processor and a memory, and the memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, it implements the steps of the method for multi-transmit receive point (TRP) cooperative communication according to any one of claims 1 to 4, or implements the steps of the method for multi-transmit receive point (TRP) cooperative communication according to any one of claims 5 to 7, or implements the steps of the method for multi-transmit receive point (TRP) cooperative communication according to any one of claims 8 to 9.

14. A readable storage medium Characterized in that The readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, it implements the steps of the method for multi-transmit receive point (TRP) cooperative communication according to any one of claims 1 to 4, or implements the steps of the method for multi-transmit receive point (TRP) cooperative communication according to any one of claims 5 to 7, or implements the steps of the method for multi-transmit receive point (TRP) cooperative communication according to any one of claims 8 to 9.

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