Configuration Method, Apparatus, Device, and Medium for CSI-RS Resources

Abstract

The present application discloses a method, apparatus, device, and medium for configuring CSI-RS resources, belonging to the field of communication technologies. The method is executed by a terminal, and the method includes: receiving first information, where the first indication information is used to indicate the number N of port groups corresponding to a CSI-RS resource. By indicating the number of port groups through the first information, different TRPs or TRP groups correspond to different port groups, realizing the configuration of CSI measurement resources for TRPs and / or TRP groups in different quantity situations, while reducing signaling overhead and improving transmission performance.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a method, apparatus, device, and medium for configuring Channel State Information-Reference Signal (CSI-RS) resources. Background Art

[0002] In New Radio (NR), Coherent Joint Transmission (CJT) based on Multi Transmission Reception Point (M-TRP) is introduced. A base station can receive or transmit beams through Transmission Reception Points (TRPs) to provide services to a terminal.

[0003] In related technologies, when a base station uses two TRPs to provide services to a terminal, the base station configures Channel State Information (CSI) measurement resources for the two TRPs. Among them, CSI measurement resources include Channel Measurement Resource (CMR) and Interference Measurement Resource (IMR).

[0004] In a scenario of transmission based on a TRP, the transmission mode switches between Single Transmission Reception Point (S-TRP) and M-TRP. How to configure CSI measurement resources while reducing signaling overhead in the case of different numbers of TRPs is an urgent problem to be solved. Summary of the Invention

[0005] Embodiments of this application provide a method, apparatus, device, and medium for configuring CSI-RS resources, which can configure the number of port groups corresponding to CSI-RS resources during S-TRP or M-TRP transmission. Each TRP corresponds to a port group, so as to reduce signaling overhead while indicating the number of TRPs used for transmission and improving the performance of TRP-based transmission. The technical solution is as follows:

[0006] According to one aspect of this application, a method for configuring CSI-RS resources is provided. This method is executed by a terminal and includes:

[0007] Receive first information, where the first information is used to indicate the number N of port groups corresponding to a CSI-RS resource.

[0008] According to one aspect of the present application, there is provided a method for configuring a CSI-RS resource, which is executed by an access network device, and the method includes:

[0009] Send first information, where the first information is used to indicate the number N of port groups corresponding to a CSI-RS resource.

[0010] According to one aspect of the present application, there is provided a device for configuring a CSI-RS resource, and the device includes:

[0011] A first receiving module, configured to receive first information, where the first information is used to indicate the number N of port groups corresponding to a CSI-RS resource.

[0012] According to one aspect of the present application, there is provided a device for configuring a CSI-RS resource, and the device includes:

[0013] A first sending module, configured to send first information, where the first information is used to indicate the number N of port groups corresponding to a CSI-RS resource.

[0014] According to another aspect of the embodiments of the present application, there is provided a terminal, and the terminal includes:

[0015] A processor;

[0016] A transceiver connected to the processor;

[0017] A memory for storing executable instructions executable by the processor;

[0018] Wherein, the processor is configured to load and execute the executable instructions so that the terminal implements the method for configuring a CSI-RS resource described in any one of the above.

[0019] According to another aspect of the embodiments of the present application, there is provided an access network device, and the access network device includes:

[0020] A processor;

[0021] A transceiver connected to the processor;

[0022] A memory for storing executable instructions executable by the processor;

[0023] Wherein, the processor is configured to load and execute the executable instructions so that the access network device implements the method for configuring a CSI-RS resource described in any one of the above.

[0024] According to another aspect of the embodiments of the present application, a chip is provided, and a communication device installed with the chip is used to implement the CSI-RS resource configuration method described above.

[0025] According to one aspect of the present application, a computer-readable storage medium is provided. At least one instruction, at least one program, a code set, or an instruction set is stored in the computer-readable storage medium. The at least one instruction, the at least one program, the code set, or the instruction set is loaded and executed by a processor so that a communication device implements the CSI-RS resource configuration method as described above.

[0026] The beneficial effects brought by the technical solutions provided by the embodiments of the present application at least include:

[0027] In this solution, during the process of TRP transmission, the number of port groups corresponding to a CSI-RS resource can be indicated by the first information, and each TRP or TRP group corresponds to a port group, so as to implement CSI measurement configuration for different numbers of TRPs and / or TRP groups, achieving the improvement of the transmission performance based on TRPs while reducing signaling overhead. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 is a schematic diagram of a communication system provided according to an exemplary embodiment;

[0030] Figure 2 is a flowchart of a method for configuring CSI-RS resources provided according to an exemplary embodiment;

[0031] Figure 3 is a flowchart of a method for configuring CSI-RS resources provided according to an exemplary embodiment;

[0032] Figure 4 is a flowchart of a method for configuring CSI-RS resources provided according to an exemplary embodiment;

[0033] Figure 5 is a flowchart of a method for configuring CSI-RS resources provided according to an exemplary embodiment;

[0034] Figure 6 is a flowchart of a method for configuring CSI-RS resources provided according to an exemplary embodiment;

[0035] Figure 7 is a block diagram of a configuration device for a CSI-RS resource shown according to an exemplary embodiment;

[0036] Figure 8 is a block diagram of a configuration device for a CSI-RS resource shown according to an exemplary embodiment;

[0037] Figure 9 is a schematic structural diagram of a terminal shown according to an exemplary embodiment;

[0038] Figure 10 is a schematic structural diagram of a network device shown according to an exemplary embodiment. Detailed implementation manners

[0039] Here, the exemplary embodiments will be described in detail, and the examples 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.

[0040] The network architecture and service scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those of ordinary skill in the art know that with the evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

[0041] Figure 1 shows a schematic diagram of a communication system provided by an embodiment of the present application. The communication system may include: a terminal 10 and an access network device 20.

[0042] The number of terminals 10 is usually multiple, and one or more terminals 10 may be distributed in each cell managed by an access network device 20. The terminal 10 may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem with wireless communication functions, as well as various forms of user equipment (UE), mobile station (MS), and so on. For the sake of convenience of description, in the embodiments of the present application, the above-mentioned devices are collectively referred to as terminals.

[0043] The access network device 20 is a device deployed in the access network to provide wireless communication functions for the terminal 10. The access network device 20 may include various forms of macro base stations, micro base stations, relay stations, and access points. In systems adopting different radio access technologies, the names of the devices with the functions of the access network device may be different. For example, in the 5G NR system, it is called gNodeB or gNB. With the evolution of communication technologies, the name of the "access network device" may change. For the convenience of description, in the embodiments of the present application, the above-mentioned device that provides wireless communication functions for the terminal 10 is collectively referred to as the access network device. A connection can be established between the access network device 20 and the terminal 10 through the air interface, so as to communicate through this connection, including the interaction of signaling and data. The number of access network devices 20 can be multiple, and two adjacent access network devices 20 can also communicate with each other in a wired or wireless manner. The terminal 10 can switch between different access network devices 20, that is, establish connections with different access network devices 20.

[0044] The TRP is a device deployed in the access network to provide wireless communication functions for the terminal 10. There can be multiple TRPs, for example, TRP1, TPR2,..., TRPn. In NR, the TRP can be used in Frequency Range 1 (FR1) or Frequency Range 2 (FR2). Especially when the communication frequency band is in FR2, due to the relatively fast attenuation of high-frequency channels, in order to ensure the coverage range, beam-based transmission and reception need to be used. Optionally, the terminal 10 communicates with at least two TRPs through receiving beams and / or transmitting beams. Multiple TRPs can belong to the same access network device 20 or different access network devices 20.

[0045] The "5G NR system" in the embodiments of the present application can also be referred to as the 5G system or the NR system, but those skilled in the art can understand its meaning. The technical solutions described in the embodiments of the present application can be applied to the 5G NR system or the subsequent evolved systems of the 5GNR system.

[0046] In order to enable the data transmitted by different TRPs to coherently superpose at the receiving end, the terminal 10 needs to report the CSI of different TRPs or different combinations of TRPs based on the transmission assumptions of CJT.

[0047] The CSI reported by the terminal 10 is obtained based on the CMR measurements configured by the access network device 20. For example, the access network device 20 configures CMR for each TRP, and the terminal 10 performs CSI measurements based on these CMRs and reports the corresponding CSI.

[0048] Figure 2The figure shows a flowchart of a method for configuring CSI-RS resources provided by an embodiment of the present application. This method can be applied to Figure 1 a terminal in the communication system shown. The method includes the following steps:

[0049] In step 220, receive first information.

[0050] The terminal receives the first information sent by the access network device.

[0051] The first information is used to indicate the number N of port groups corresponding to a CSI-RS resource.

[0052] Optionally, the first information is further used to indicate the number P of ports corresponding to the CSI-RS resource; or, the terminal receives second information, and the second information is used to indicate the number P of ports corresponding to the CSI-RS resource. That is, the number P of ports included in the CSI-RS resource may be included in the first information and sent to the terminal together with the number N of port groups, or may be sent to the terminal separately in another second information.

[0053] Optionally, the number of ports in each port group is the same. That is, the P ports are evenly divided into N port groups.

[0054] Optionally, the number N of port groups is equal to the number of TRPs and / or TRP groups. That is, the N port groups corresponding to the P ports are used for M-TRP transmission based on N TRPs and / or TRP groups, and each port group corresponds to one TRP or TRP group. Among them, a TRP group may include at least one TRP, for example, two TRPs in the same location. The present application does not limit this.

[0055] Optionally, the CSI-RS resource is a non-zero power CSI-RS resource.

[0056] Optionally, the first information is carried in at least one of the following: Radio Resource Control (RRC); Medium Access Control Control Element (MACCE); Downlink Control Information (DCI).

[0057] In some embodiments, for a CSI-RS resource with the number of ports being P, the first information indicates the following different numbers of port groups:

[0058] · When the number of ports P corresponding to the CSI-RS resource is 4, the first piece of information is used to indicate that the number of port groups N is 1 or 2. That is, when the CSI-RS resource contains 4 ports, the number of port groups is 1 or 2; that is, the number of TRPs and / or TRP groups for transmission is 1 or 2, and the terminal and the access network device are transmitted through S-TRP or a single TRP group, or, based on the M-TRP transmission method of 2 TRPs and / or TRP groups. In this case, there are 2 possible cases for the number of port groups N, so the number of bits in the first piece of information used to indicate the number of port groups N is 1. For example, when the bit for indicating the number of port groups is 0, it represents that the number of port groups N is 1, and when the bit for indicating the number of port groups is 1, it represents that the number of port groups N is 2.

[0059] · When the number of ports P corresponding to the CSI-RS resource is 8, the first piece of information is used to indicate that the number of port groups N is 1 or 2 or 4. That is, when the CSI-RS resource contains 8 ports, the number of port groups is 1 or 2 or 4; that is, the number of TRPs and / or TRP groups for transmission is 1 or 2 or 4, and the terminal and the access network device are transmitted through S-TRP or a single TRP group, or, based on the M-TRP of 2 TRPs and / or TRP groups, or, based on the M-TRP transmission method of 4 TRPs and / or TRP groups. In this case, there are 3 possible cases for the number of port groups N, so the number of bits in the first piece of information used to indicate the number of port groups N is 2. For example, when the bits for indicating the number of port groups are 00, it represents that the number of port groups N is 1, when the bits for indicating the number of port groups are 01, it represents that the number of port groups N is 2, and when the bits for indicating the number of port groups are 10, it represents that the number of port groups N is 4.

[0060] · When the number of ports P corresponding to the CSI-RS resource is 12, the first piece of information is used to indicate that the number of port groups N is 1 or 3. That is, when the CSI-RS resource contains 12 ports, the number of port groups is 1 or 3; that is, the number of TRPs and / or TRP groups for transmission is 1 or 3, and the terminal and the access network device are transmitted through S-TRP or a single TRP group, or, based on the M-TRP transmission method of 3 TRPs and / or TRP groups. In this case, there are 2 possible cases for the number of port groups N, so the number of bits in the first piece of information used to indicate the number of port groups N is 1. For example, when the bit for indicating the number of port groups is 0, it represents that the number of port groups N is 1, and when the bit for indicating the number of port groups is 1, it represents that the number of port groups N is 3.

[0061] · When the number of ports P corresponding to the CSI-RS resource is 16, the first information is used to indicate that the number of port groups N is 1 or 2 or 4. That is, when the CSI-RS resource contains 16 ports, the number of port groups is 1 or 2 or 4; that is, the number of TRPs and / or TRP groups for transmission is 1 or 2 or 4, and the terminal and the access network device are transmitted through S-TRP or a single TRP group, or, M-TRP based on 2 TRPs and / or TRP groups, or, M-TRP transmission mode based on 4 TRPs and / or TRP groups. In this case, there are 3 possible cases for the number of port groups N, so the number of bits in the first information used to indicate the number of port groups N is 2. For example, when the bit position used to indicate the number of port groups is 00, it represents that the number of port groups N is 1, when the bit position used to indicate the number of port groups is 01, it represents that the number of port groups N is 2, and when the bit position used to indicate the number of port groups is 10, it represents that the number of port groups N is 4.

[0062] · When the number of ports P corresponding to the CSI-RS resource is 24, the first information is used to indicate that the number of port groups N is 1 or 2 or 3. That is, when the CSI-RS resource contains 24 ports, the number of port groups is 1 or 2 or 3; that is, the number of TRPs and / or TRP groups for transmission is 1 or 2 or 3, and the terminal and the access network device are transmitted through S-TRP or a single TRP group, or, M-TRP based on 2 TRPs and / or TRP groups, or, M-TRP transmission mode based on 3 TRPs and / or TRP groups. In this case, there are 3 possible cases for the number of port groups N, so the number of bits in the first information used to indicate the number of port groups N is 2. For example, when the bit position used to indicate the number of port groups is 00, it represents that the number of port groups N is 1, when the bit position used to indicate the number of port groups is 01, it represents that the number of port groups N is 2, and when the bit position used to indicate the number of port groups is 10, it represents that the number of port groups N is 3.

[0063] · When the number of ports P corresponding to the CSI-RS resource is 32, the first information is used to indicate that the number of port groups N is 1, 2, or 4. That is, when the CSI-RS resource contains 32 ports, the number of port groups is 1, 2, or 4; that is, the number of TRPs and / or TRP groups for transmission is 1, 2, or 4, and the terminal and the access network device transmit through the S-TRP or single TRP group, or, the M-TRP based on 2 TRPs and / or TRP groups, or, the M-TRP based on 4 TRPs and / or TRP groups. In this case, there are 3 possible cases for the number of port groups N, so the number of bits in the first information used to indicate the number of port groups N is 2. For example, when the bit position used to indicate the number of port groups is 00, it represents that the number of port groups N is 1; when the bit position used to indicate the number of port groups is 01, it represents that the number of port groups N is 2; when the bit position used to indicate the number of port groups is 10, it represents that the number of port groups N is 4.

[0064] In addition, for illustrative purposes, when the number of ports P corresponding to the CSI-RS resource is 2, the first information does not explicitly indicate the number of port groups N, and / or, the first information is used to implicitly indicate that the number of port groups N is 1. That is, when the CSI-RS resource contains only two ports, the number of port groups is 1; that is, the number of TRPs or TRP groups for transmission is one, and the terminal and the access network device transmit based on the single transmission reception point (S-TRP) or single TRP group transmission mode. In this case, there is only 1 possible case for the number of port groups N, and the first information does not need to additionally indicate the number of port groups.

[0065] Optionally, each port group may contain one or more ports. When the number of ports in each port group is multiple, these ports may be consecutive ports; or, these ports may be non-consecutive ports. That is, the multiple ports in the port group may be consecutive ports or non-consecutive ports.

[0066] Optionally, the correspondence rule between the port group and at least one port included in the port group is configured by the access network device; or, the correspondence rule between the port group and at least one port included in the port group is determined by a default rule (such as a communication protocol). That is, the correspondence rule between the port group and the multiple ports in the port group can be configured by the access network device or determined based on a pre-set rule (such as a communication protocol). For example, after receiving the capability information of the terminal supporting non-consecutive multiple ports, the access network device configures non-consecutive multiple ports for each port group; for another example, the default rule is to configure 8 consecutive ports as 1 port group, and so on. This application does not limit the correspondence rule between the port group and at least one port.

[0067] Optionally, the terminal also reports capability information to the access network device. The capability information includes at least one of the following: the supported port group includes at least two consecutive ports; the supported port group includes at least two non-consecutive ports. That is, the terminal reports to the access network device whether it supports multiple consecutive / non-consecutive ports, and the access network device configures the multiple ports in each port group to be consecutive / non-consecutive according to the capability information reported by the terminal.

[0068] Optionally, the first information is carried in at least one of the following: RRC; MAC CE; DCI.

[0069] Optionally, the second information is carried in RRC.

[0070] That is, when the first information is used to simultaneously indicate the number of ports P and the number of port groups N, the first information of the number of ports P and the number of port groups N is carried in at least one of RRC, MAC CE, and DCI; when the first information is used to indicate the number of port groups N and the second information is used to indicate the number of ports P, the first information including the number of port groups N is carried in at least one of MAC CE and DCI, and the second information including the number of ports P is carried in RRC.

[0071] In summary, the terminal receives the first information for indicating the number of port groups, and then configures the CSI-RS resource in combination with the number of ports included in the CSI-RS resource, so that the configured CSI-RS resource satisfies the CSI measurement of different numbers of TRPs and / or TRP groups. Since there is no need to configure each TRP or TRP group separately and the number of bits used to indicate the number of port groups in the first information does not exceed two, the signaling overhead is reduced, and at the same time, the transmission performance based on the TRP transmission mode is improved.

[0072] As can be seen from the foregoing embodiments, the number of ports P may be carried in the first information or may be carried in an additional second information. The following takes the case where the number of ports P is carried in the second information as an example for illustration.

[0073] Figure 3 The flowchart of the configuration method of the CSI-RS resource provided by an embodiment of the present application is shown. This method can be applied to Figure 1 the terminal in the communication system shown. This method includes the following steps:

[0074] In step 320, receive the first information.

[0075] The terminal receives the first information sent by the access network device.

[0076] The first information is used to indicate the number of port groups N corresponding to a CSI-RS resource.

[0077] Optionally, the CSI-RS resource is a non-zero power CSI-RS resource.

[0078] Optionally, each of the N port groups contains the same number of ports. That is, all the ports in the CSI-RS resource are evenly divided into N port groups.

[0079] Optionally, the number of port groups N is equal to the number of TRPs and / or TRP groups. That is, the N port groups in the CSI-RS resource are used for M-TRP transmission based on N TRPs and / or TRP groups, and each port group corresponds to one TRP or TRP group.

[0080] In step 340, receive second information.

[0081] The terminal receives the second information sent by the access network device.

[0082] The second information is used to indicate the number of ports P corresponding to a CSI-RS resource.

[0083] In some embodiments, for the number of ports P indicated in the second information, the first information indicates the following different numbers of port groups N:

[0084] · When the number of ports P corresponding to the CSI-RS resource is 4, the first information is used to indicate that the number of port groups N is 1 or 2. That is, when the CSI-RS resource contains 4 ports, the number of port groups is 1 or 2; that is, the number of TRPs and / or TRP groups for transmission is 1 or 2, and the terminal and the access network device perform transmission through S-TRP or a single TRP group, or, M-TRP transmission based on 2 TRPs and / or TRP groups. In this case, there are 2 possible cases for the number of port groups N, and the number of bits in the first information used to indicate the number of port groups N is 1. For example, when the bit for indicating the number of port groups is 0, it represents that the number of port groups N is 1, and when the bit for indicating the number of port groups is 1, it represents that the number of port groups N is 2.

[0085] · When the number of ports P corresponding to the CSI-RS resource is 8, the first piece of information is used to indicate that the number of port groups N is 1, 2, or 4. That is, when the CSI-RS resource contains 8 ports, the number of port groups is 1, 2, or 4; that is, the number of TRPs and / or TRP groups for transmission is 1, 2, or 4. The terminal and the access network device transmit through S-TRP or a single TRP group, or, M-TRP based on 2 TRPs and / or TRP groups, or, M-TRP based on 4 TRPs and / or TRP groups. In this case, there are 3 possible cases for the number of port groups N, so the number of bits in the first piece of information used to indicate the number of port groups N is 2. For example, when the bit position used to indicate the number of port groups is 00, it represents that the number of port groups N is 1; when the bit position used to indicate the number of port groups is 01, it represents that the number of port groups N is 2; when the bit position used to indicate the number of port groups is 10, it represents that the number of port groups N is 4.

[0086] · When the number of ports P corresponding to the CSI-RS resource is 12, the first piece of information is used to indicate that the number of port groups N is 1 or 3. That is, when the CSI-RS resource contains 12 ports, the number of port groups is 1 or 3; that is, the number of TRPs and / or TRP groups for transmission is 1 or 3. The terminal and the access network device transmit through S-TRP or a single TRP group, or, M-TRP based on 3 TRPs and / or TRP groups. In this case, there are 2 possible cases for the number of port groups N, so the number of bits in the first piece of information used to indicate the number of port groups N is 1. For example, when the bit position used to indicate the number of port groups is 0, it represents that the number of port groups N is 1; when the bit position used to indicate the number of port groups is 1, it represents that the number of port groups N is 3.

[0087] · When the number of ports P corresponding to the CSI-RS resource is 16, the first piece of information is used to indicate that the number of port groups N is 1, 2, or 4. That is, when the CSI-RS resource contains 16 ports, the number of port groups is 1, 2, or 4; that is, the number of TRPs and / or TRP groups for transmission is 1, 2, or 4. The terminal and the access network device transmit through S-TRP or a single TRP group, or, M-TRP based on 2 TRPs and / or TRP groups, or, M-TRP based on 4 TRPs and / or TRP groups. In this case, there are 3 possible cases for the number of port groups N, so the number of bits in the first piece of information used to indicate the number of port groups N is 2. For example, when the bit position used to indicate the number of port groups is 00, it represents that the number of port groups N is 1; when the bit position used to indicate the number of port groups is 01, it represents that the number of port groups N is 2; when the bit position used to indicate the number of port groups is 10, it represents that the number of port groups N is 4.

[0088] · When the number of ports P corresponding to the CSI-RS resource is 24, the first piece of information is used to indicate that the number of port groups N is 1, 2, or 3. That is, when the CSI-RS resource contains 24 ports, the number of port groups is 1, 2, or 3; that is, the number of TRPs and / or TRP groups for transmission is 1, 2, or 3. The terminal and the access network device transmit through the S-TRP or a single TRP group, or the M-TRP based on 2 TRPs and / or TRP groups, or the M-TRP based on 3 TRPs and / or TRP groups. In this case, there are 3 possible cases for the number of port groups N, so the number of bits in the first piece of information used to indicate the number of port groups N is 2. For example, when the bit position used to indicate the number of port groups is 00, it represents that the number of port groups N is 1; when the bit position used to indicate the number of port groups is 01, it represents that the number of port groups N is 2; when the bit position used to indicate the number of port groups is 10, it represents that the number of port groups N is 3.

[0089] · When the number of ports P corresponding to the CSI-RS resource is 32, the first piece of information is used to indicate that the number of port groups N is 1, 2, or 4. That is, when the CSI-RS resource contains 32 ports, the number of port groups is 1, 2, or 4; that is, the number of TRPs and / or TRP groups for transmission is 1, 2, or 4. The terminal and the access network device transmit through the S-TRP or a single TRP group, or the M-TRP based on 2 TRPs and / or TRP groups, or the M-TRP based on 4 TRPs and / or TRP groups. In this case, there are 3 possible cases for the number of port groups N, so the number of bits in the first piece of information used to indicate the number of port groups N is 2. For example, when the bit position used to indicate the number of port groups is 00, it represents that the number of port groups N is 1; when the bit position used to indicate the number of port groups is 01, it represents that the number of port groups N is 2; when the bit position used to indicate the number of port groups is 10, it represents that the number of port groups N is 4.

[0090] In addition, for illustrative purposes, when the number of ports P corresponding to the CSI-RS resource is 2, the first piece of information does not explicitly indicate the number of port groups N, and / or the first piece of information is used to implicitly indicate that the number of port groups N is 1. That is, when the CSI-RS resource contains only two ports, the number of port groups is 1; that is, the number of TRPs or TRP groups for transmission is one. The terminal and the access network device transmit based on the single transmission reception point (S-TRP) or a single TRP group transmission mode. In this case, there is only 1 possible case for the number of port groups N, and the first piece of information does not need to additionally indicate the number of port groups.

[0091] Optionally, each port group may include one or more ports. When the number of ports in each port group is more than one, these ports may be consecutive ports; or, these ports may be non-consecutive ports. That is, the multiple ports in a port group may be consecutive ports or non-consecutive ports.

[0092] Optionally, the correspondence rule between a port group and at least one port included in the port group is configured by the access network device; or, the correspondence rule between a port group and at least one port included in the port group is determined by a default rule (such as a communication protocol). That is, the correspondence rule between a port group and multiple ports in the port group may be configured by the access network device or determined based on a pre-set rule (such as a communication protocol). For example, after receiving the capability information of the terminal supporting multiple non-consecutive ports, the access network device configures multiple non-consecutive ports in each port group; for another example, the default rule is to configure 8 consecutive ports as one port group, and so on. This application does not limit the correspondence rule between a port group and at least one port.

[0093] Optionally, the terminal also reports capability information to the access network device. The capability information includes at least one of the following: supporting that a port group includes at least two consecutive ports; supporting that a port group includes at least two non-consecutive ports. That is, the terminal reports to the access network device whether it supports multiple consecutive / non-consecutive ports, and the access network device configures multiple ports in each port group to be consecutive / non-consecutive according to the capability information reported by the terminal.

[0094] Optionally, the first information is carried in at least one of the following: RRC; MAC CE; DCI. The second information is carried in RRC. That is, in some embodiments, RRC is used to configure CSI-RS resources and indicate the port number P, and the information indicating the port group number N is carried in MAC CE or DCI.

[0095] It should be noted that this application does not limit the execution order of step 320 and step 340. Step 320 may be executed first, and then step 340; or, step 340 may be executed first, and then step 320; or, step 320 and step 340 may be executed simultaneously.

[0096] In summary, the terminal receives the first information for indicating the port group number and the second information for indicating the port number, realizes the configuration of CSI-RS resources, and enables the configured CSI-RS resources to meet the CSI measurement of TRP and / or TRP groups in different quantity situations. Since there is no need to configure each TRP or TRP group separately and the number of bits for indicating the port group number in the first information does not exceed two, the signaling overhead is reduced, and at the same time, the transmission performance based on the TRP transmission mode is improved.

[0097] Figure 4 The flowchart of the configuration method of the CSI-RS resource provided by an embodiment of the present application is shown. This method can be applied to Figure 1 the access network device in the communication system shown. This method includes the following steps:

[0098] In step 420, send the first information.

[0099] The access network device sends configuration information to the terminal.

[0100] The first information is used to indicate the number N of port groups corresponding to a CSI-RS resource.

[0101] Optionally, the first information is further used to indicate the number P of ports corresponding to the CSI-RS resource; or, the access network device sends the second information, and the second information is used to indicate the number P of ports corresponding to the CSI-RS resource. That is, the number P of ports included in the CSI-RS resource may be included in the first information and sent to the terminal together with the number N of port groups, or may be sent to the terminal separately in the other second information.

[0102] Optionally, the number of ports in each port group is the same. That is, the P ports are evenly divided into N port groups.

[0103] Optionally, the number N of port groups is equal to the number of TRPs and / or TRP groups. That is, the N port groups corresponding to the P ports are used for M-TRP transmission based on N TRPs and / or TRP groups, and each port group corresponds to one TRP or TRP group. Among them, the TRP group may include at least one TRP, such as two TRPs in the same location. The present application does not limit this.

[0104] Optionally, the CSI-RS resource is a non-zero power CSI-RS resource.

[0105] Optionally, the first information is carried in at least one of the following: Radio Resource Control (RRC); Medium Access Control Control Element (MACCE); Downlink Control Information (DCI).

[0106] In some embodiments, for the CSI-RS resource with the number of ports being P, the first information indicates the following different numbers of port groups:

[0107] · When the number of ports P corresponding to the CSI-RS resource is 4, the first piece of information is used to indicate that the number of port groups N is 1 or 2. That is, when the CSI-RS resource contains 4 ports, the number of port groups is 1 or 2; that is, the number of TRPs and / or TRP groups for transmission is 1 or 2, and the terminal and the access network device communicate through S-TRP or a single TRP group, or, an M-TRP transmission method based on 2 TRPs and / or TRP groups for transmission. In this case, there are 2 possible cases for the number of port groups N, so the number of bits in the first piece of information used to indicate the number of port groups N is 1. For example, when the bit for indicating the number of port groups is 0, it represents that the number of port groups N is 1, and when the bit for indicating the number of port groups is 1, it represents that the number of port groups N is 2.

[0108] · When the number of ports P corresponding to the CSI-RS resource is 8, the first piece of information is used to indicate that the number of port groups N is 1 or 2 or 4. That is, when the CSI-RS resource contains 8 ports, the number of port groups is 1 or 2 or 4; that is, the number of TRPs and / or TRP groups for transmission is 1 or 2 or 4, and the terminal and the access network device communicate through S-TRP or a single TRP group, or, an M-TRP based on 2 TRPs and / or TRP groups, or, an M-TRP transmission method based on 4 TRPs and / or TRP groups for transmission. In this case, there are 3 possible cases for the number of port groups N, so the number of bits in the first piece of information used to indicate the number of port groups N is 2. For example, when the bits for indicating the number of port groups are 00, it represents that the number of port groups N is 1, when the bits for indicating the number of port groups are 01, it represents that the number of port groups N is 2, and when the bits for indicating the number of port groups are 10, it represents that the number of port groups N is 4.

[0109] · When the number of ports P corresponding to the CSI-RS resource is 12, the first piece of information is used to indicate that the number of port groups N is 1 or 3. That is, when the CSI-RS resource contains 12 ports, the number of port groups is 1 or 3; that is, the number of TRPs and / or TRP groups for transmission is 1 or 3, and the terminal and the access network device communicate through S-TRP or a single TRP group, or, an M-TRP transmission method based on 3 TRPs and / or TRP groups for transmission. In this case, there are 2 possible cases for the number of port groups N, so the number of bits in the first piece of information used to indicate the number of port groups N is 1. For example, when the bit for indicating the number of port groups is 0, it represents that the number of port groups N is 1, and when the bit for indicating the number of port groups is 1, it represents that the number of port groups N is 3.

[0110] · When the number of ports P corresponding to the CSI-RS resource is 16, the first information is used to indicate that the number of port groups N is 1 or 2 or 4. That is, when the CSI-RS resource contains 16 ports, the number of port groups is 1 or 2 or 4; that is, the number of TRPs and / or TRP groups for transmission is 1 or 2 or 4, and the terminal and the access network device are transmitted through S-TRP or a single TRP group, or, M-TRP based on 2 TRPs and / or TRP groups, or, M-TRP transmission mode based on 4 TRPs and / or TRP groups. In this case, there are 3 possible cases for the number of port groups N, so the number of bits in the first information used to indicate the number of port groups N is 2. For example, when the bit position used to indicate the number of port groups is 00, it represents that the number of port groups N is 1, when the bit position used to indicate the number of port groups is 01, it represents that the number of port groups N is 2, and when the bit position used to indicate the number of port groups is 10, it represents that the number of port groups N is 4.

[0111] · When the number of ports P corresponding to the CSI-RS resource is 24, the first information is used to indicate that the number of port groups N is 1 or 2 or 3. That is, when the CSI-RS resource contains 24 ports, the number of port groups is 1 or 2 or 3; that is, the number of TRPs and / or TRP groups for transmission is 1 or 2 or 3, and the terminal and the access network device are transmitted through S-TRP or a single TRP group, or, M-TRP based on 2 TRPs and / or TRP groups, or, M-TRP transmission mode based on 3 TRPs and / or TRP groups. In this case, there are 3 possible cases for the number of port groups N, so the number of bits in the first information used to indicate the number of port groups N is 2. For example, when the bit position used to indicate the number of port groups is 00, it represents that the number of port groups N is 1, when the bit position used to indicate the number of port groups is 01, it represents that the number of port groups N is 2, and when the bit position used to indicate the number of port groups is 10, it represents that the number of port groups N is 3.

[0112] · When the number of ports P corresponding to the CSI-RS resource is 32, the first piece of information is used to indicate that the number of port groups N is 1, 2, or 4. That is, when the CSI-RS resource contains 32 ports, the number of port groups is 1, 2, or 4; that is, the number of TRPs and / or TRP groups for transmission is 1, 2, or 4. The terminal and the access network device transmit through the S-TRP or a single TRP group, or, the M-TRP based on 2 TRPs and / or TRP groups, or, the M-TRP based on 4 TRPs and / or TRP groups. In this case, there are 3 possible cases for the number of port groups N, so the number of bits in the first piece of information used to indicate the number of port groups N is 2. For example, when the bit position used to indicate the number of port groups is 00, it represents that the number of port groups N is 1; when the bit position used to indicate the number of port groups is 01, it represents that the number of port groups N is 2; when the bit position used to indicate the number of port groups is 10, it represents that the number of port groups N is 4.

[0113] In addition, for illustrative purposes, when the number of ports P corresponding to the CSI-RS resource is 2, the first piece of information does not explicitly indicate the number of port groups N, and / or, the first piece of information is used to implicitly indicate that the number of port groups N is 1. That is, when the CSI-RS resource contains only two ports, the number of port groups is 1; that is, the number of TRPs or TRP groups for transmission is one, and the terminal and the access network device transmit based on the single transmission reception point (S-TRP) or a single TRP group transmission mode. In this case, there is only 1 possible case for the number of port groups N, and the first piece of information does not need to additionally indicate the number of port groups.

[0114] Optionally, each port group may contain one or more ports. When the number of ports in each port group is multiple, these ports may be consecutive ports; or, these ports may be non-consecutive ports. That is, the multiple ports in a port group may be consecutive ports or non-consecutive ports.

[0115] Optionally, the correspondence rule between the port group and at least one port included in the port group is configured by the access network device; or, the correspondence rule between the port group and at least one port included in the port group is determined by a default rule (such as a communication protocol). That is, the correspondence rule between the port group and the multiple ports in the port group can be configured by the access network device or determined based on a pre-set rule (such as a communication protocol). For example, after receiving the capability information of the terminal supporting non-consecutive multiple ports, the access network device configures non-consecutive multiple ports for each port group; for another example, the default rule is to configure 8 consecutive ports as 1 port group, and so on. This application does not limit the correspondence rule between the port group and at least one port.

[0116] Optionally, the terminal also reports capability information to the access network device. The capability information includes at least one of the following: the supported port group includes at least two consecutive ports; the supported port group includes at least two non-consecutive ports. That is, the terminal reports to the access network device whether it supports multiple consecutive / non-consecutive ports, and the access network device configures the multiple ports in each port group as consecutive / non-consecutive according to the capability information reported by the terminal.

[0117] Optionally, the first information is carried in at least one of the following: RRC; MAC CE; DCI.

[0118] Optionally, the second information is carried in RRC.

[0119] That is, when the first information is used to simultaneously indicate the number of ports P and the number of port groups N, the information of the number of ports P and the number of port groups N is carried in at least one of RRC, MAC CE, and DCI; when the first information is used to indicate the number of port groups N and the second information is used to indicate the number of ports P, the information of the number of port groups N is carried in at least one of MAC CE and DCI, and the information of the number of ports P is carried in RRC.

[0120] In summary, the access network device sends the first information for indicating the number of port groups, enabling the terminal to configure the CSI-RS resources in combination with the number of ports included in the CSI-RS resources, so that the configured CSI-RS resources meet the CSI measurements of different numbers of TRPs and / or TRP groups. Since there is no need to configure each TRP or TRP group separately and the number of bits for indicating the number of port groups in the first information sent by the access network device does not exceed two, the signaling overhead is reduced and the transmission performance based on the TRP transmission mode is also improved.

[0121] As can be seen from the foregoing embodiments, the number of ports P may be carried in the first information or may be carried in the additional second information. The following takes the case where the number of ports P is carried in the second information as an example for illustration.

[0122] Figure 5 The flowchart of the configuration method of the CSI-RS resources provided by an embodiment of the present application is shown. This method can be applied to Figure 1 the access network device in the communication system shown. This method includes the following steps:

[0123] In step 520, send the first information.

[0124] The access network device sends the first information to the terminal.

[0125] The first information is used to indicate the number of port groups N corresponding to a CSI-RS resource.

[0126] Optionally, the CSI-RS resource is a non-zero power CSI-RS resource.

[0127] Optionally, each port group in the N port groups contains the same number of ports. That is, all ports in the CSI-RS resource are evenly divided into N port groups.

[0128] Optionally, the number of port groups N is equal to the number of TRPs and / or TRP groups. That is, the N port groups in the CSI-RS resource are used for M-TRP transmission based on N TRPs and / or TRP groups, and each port group corresponds to one TRP or TRP group.

[0129] In step 540, the second information is sent.

[0130] The access network device sends the second information to the terminal.

[0131] The second information is used to indicate the number of ports P corresponding to a CSI-RS resource.

[0132] In some embodiments, for the number of ports P indicated in the second information, the first information indicates the following different numbers of port groups N:

[0133] · When the number of ports P corresponding to the CSI-RS resource is 4, the first information is used to indicate that the number of port groups N is 1 or 2. That is, when the CSI-RS resource contains 4 ports, the number of port groups is 1 or 2; that is, the number of TRPs and / or TRP groups for transmission is 1 or 2, and the terminal and the access network device perform transmission through S-TRP or a TRP group, or, an M-TRP transmission method based on 2 TRPs and / or TRP groups. In this case, there are 2 possible cases for the number of port groups N, and the number of bits in the first information used to indicate the number of port groups N is 1. For example, when the bit for indicating the number of port groups is 0, it represents that the number of port groups N is 1, and when the bit for indicating the number of port groups is 1, it represents that the number of port groups N is 2.

[0134] · When the number of ports P corresponding to the CSI-RS resource is 8, the first piece of information is used to indicate that the number of port groups N is 1, 2, or 4. That is, when the CSI-RS resource contains 8 ports, the number of port groups is 1, 2, or 4; that is, the number of TRPs and / or TRP groups for transmission is 1, 2, or 4. The terminal and the access network device transmit through S-TRP or a single TRP group, or, M-TRP based on 2 TRPs and / or TRP groups, or, M-TRP based on 4 TRPs and / or TRP groups. In this case, there are 3 possible cases for the number of port groups N, so the number of bits in the first piece of information used to indicate the number of port groups N is 2. For example, when the bit position used to indicate the number of port groups is 00, it represents that the number of port groups N is 1; when the bit position used to indicate the number of port groups is 01, it represents that the number of port groups N is 2; when the bit position used to indicate the number of port groups is 10, it represents that the number of port groups N is 4.

[0135] · When the number of ports P corresponding to the CSI-RS resource is 12, the first piece of information is used to indicate that the number of port groups N is 1 or 3. That is, when the CSI-RS resource contains 12 ports, the number of port groups is 1 or 3; that is, the number of TRPs and / or TRP groups for transmission is 1 or 3. The terminal and the access network device transmit through S-TRP or a single TRP group, or, M-TRP based on 3 TRPs and / or TRP groups. In this case, there are 2 possible cases for the number of port groups N, so the number of bits in the first piece of information used to indicate the number of port groups N is 1. For example, when the bit position used to indicate the number of port groups is 0, it represents that the number of port groups N is 1; when the bit position used to indicate the number of port groups is 1, it represents that the number of port groups N is 3.

[0136] · When the number of ports P corresponding to the CSI-RS resource is 16, the first piece of information is used to indicate that the number of port groups N is 1, 2, or 4. That is, when the CSI-RS resource contains 16 ports, the number of port groups is 1, 2, or 4; that is, the number of TRPs and / or TRP groups for transmission is 1, 2, or 4. The terminal and the access network device transmit through S-TRP or a single TRP group, or, M-TRP based on 2 TRPs and / or TRP groups, or, M-TRP based on 4 TRPs and / or TRP groups. In this case, there are 3 possible cases for the number of port groups N, so the number of bits in the first piece of information used to indicate the number of port groups N is 2. For example, when the bit position used to indicate the number of port groups is 00, it represents that the number of port groups N is 1; when the bit position used to indicate the number of port groups is 01, it represents that the number of port groups N is 2; when the bit position used to indicate the number of port groups is 10, it represents that the number of port groups N is 4.

[0137] · When the number of ports P corresponding to the CSI-RS resource is 24, the first piece of information is used to indicate that the number of port groups N is 1, 2, or 3. That is, when the CSI-RS resource contains 24 ports, the number of port groups is 1, 2, or 3; that is, the number of TRPs and / or TRP groups for transmission is 1, 2, or 3. The terminal and the access network device are transmitted through S-TRP or a single TRP group, or M-TRP based on 2 TRPs and / or TRP groups, or M-TRP based on 3 TRPs and / or TRP groups. In this case, there are 3 possible cases for the number of port groups N, so the number of bits in the first piece of information used to indicate the number of port groups N is 2. For example, when the bit position used to indicate the number of port groups is 00, it represents that the number of port groups N is 1; when the bit position used to indicate the number of port groups is 01, it represents that the number of port groups N is 2; when the bit position used to indicate the number of port groups is 10, it represents that the number of port groups N is 3.

[0138] · When the number of ports P corresponding to the CSI-RS resource is 32, the first piece of information is used to indicate that the number of port groups N is 1, 2, or 4. That is, when the CSI-RS resource contains 32 ports, the number of port groups is 1, 2, or 4; that is, the number of TRPs and / or TRP groups for transmission is 1, 2, or 4. The terminal and the access network device are transmitted through S-TRP or a single TRP group, or M-TRP based on 2 TRPs and / or TRP groups, or M-TRP based on 4 TRPs and / or TRP groups. In this case, there are 3 possible cases for the number of port groups N, so the number of bits in the first piece of information used to indicate the number of port groups N is 2. For example, when the bit position used to indicate the number of port groups is 00, it represents that the number of port groups N is 1; when the bit position used to indicate the number of port groups is 01, it represents that the number of port groups N is 2; when the bit position used to indicate the number of port groups is 10, it represents that the number of port groups N is 4.

[0139] In addition, for illustrative purposes, when the number of ports P corresponding to the CSI-RS resource is 2, the first piece of information does not explicitly indicate the number of port groups N, and / or the first piece of information is used to implicitly indicate that the number of port groups N is 1. That is, when the CSI-RS resource contains only two ports, the number of port groups is 1; that is, the number of TRPs or TRP groups for transmission is one. The terminal and the access network device are transmitted based on the single transmission reception point (S-TRP) or single TRP group transmission mode. In this case, there is only 1 possible case for the number of port groups N, and the first piece of information does not need to additionally indicate the number of port groups.

[0140] Optionally, each port group may include one or more ports. When there are multiple ports in each port group, these ports may be consecutive ports; or, these ports may be non-consecutive ports. That is, the multiple ports in a port group may be consecutive ports or non-consecutive ports.

[0141] Optionally, the correspondence rule between a port group and at least one port included in the port group is configured by the access network device; or, the correspondence rule between a port group and at least one port included in the port group is determined by a default rule (such as a communication protocol). That is, the correspondence rule between a port group and the multiple ports in the port group may be configured by the access network device or determined based on a pre-set rule (such as a communication protocol). For example, after receiving the capability information of the terminal supporting multiple non-consecutive ports, the access network device configures multiple non-consecutive ports in each port group; for another example, the default rule is to configure 8 consecutive ports as one port group, and so on. This application does not limit the correspondence rule between a port group and at least one port.

[0142] Optionally, the terminal also reports capability information to the access network device. The capability information includes at least one of the following: supporting that a port group includes at least two consecutive ports; supporting that a port group includes at least two non-consecutive ports. That is, the terminal reports to the access network device whether it supports multiple consecutive / non-consecutive ports, and the access network device configures the multiple ports in each port group as consecutive / non-consecutive according to the capability information reported by the terminal.

[0143] Optionally, the first information is carried in at least one of the following: RRC; MAC CE; DCI. The second information is carried in RRC. That is, in some embodiments, RRC is used to configure CSI-RS resources and indicate the port number P, and the information indicating the port group number N is carried in MAC CE or DCI.

[0144] It should be noted that this application does not limit the execution order of step 520 and step 540. Step 520 may be executed first, and then step 540; or, step 540 may be executed first, and then step 520; or, step 520 and step 540 may be executed simultaneously.

[0145] In summary, the access network device sends the first information for indicating the port group number and the second information for indicating the port number to the terminal, realizes the configuration of CSI-RS resources, and enables the configured CSI-RS resources to meet the CSI measurement of different numbers of TRPs and / or TRP groups. Since there is no need to configure each TRP or TRP group separately and the number of bits for indicating the port group number in the first information does not exceed two, the signaling overhead is reduced and the transmission performance based on the TRP transmission mode is also improved.

[0146] Figure 6 shows a flowchart of a method for configuring CSI-RS resources provided by an embodiment of the present application. This method can be applied to Figure 1 the communication system shown. The method includes the following steps:

[0147] In step 601, the terminal reports capability information.

[0148] Exemplarily, the terminal reports capability information to the access network device. Among them, the capability information includes at least one of the following: the supported port group includes at least one continuous port; the supported port group includes at least one discontinuous port. That is, the terminal reports to the access network device whether it supports continuous / discontinuous multiple ports, and the access network device configures the multiple ports in each port group as continuous / discontinuous according to the capability information reported by the terminal.

[0149] In step 602, the access network device sends the first information.

[0150] The first information is used to indicate the number N of port groups corresponding to a CSI-RS resource.

[0151] Optionally, the CSI-RS resource is a non-zero power CSI-RS resource.

[0152] Optionally, the number N of port groups is equal to the number of TRPs and / or TRP groups. That is, the N port groups in the CSI-RS resource are used for M-TRP transmission based on N TRPs and / or TRP groups, and each port group corresponds to one TRP or TRP group. Among them, a TRP group may include at least one TRP, for example, two TRPs in the same location. The present application does not limit this.

[0153] Optionally, the first information is carried in at least one of the following: RRC; MAC CE; DCI.

[0154] In step 603, the access network device sends the second information.

[0155] The second information is carried in the RRC.

[0156] The second information is used to indicate the number P of ports corresponding to a CSI-RS resource.

[0157] Optionally, each port group in the N port groups contains the same number of ports. That is, the P ports included in the CSI-RS resource are evenly divided into N port groups.

[0158] For different numbers P of ports, the situation where the first information indicates different numbers N of port groups can be seen in the foregoing embodiments and will not be elaborated here.

[0159] It should be noted that there is no restriction on the execution order of step 602 and step 603 in this application. Step 602 can be executed first, and then step 603; or, step 603 can be executed first, and then step 602; or, step 602 and step 603 can be executed simultaneously.

[0160] It should be noted that in some embodiments, step 603 can be omitted; that is, the first information sent by the access network device in step 602 is used to indicate both the number N of port groups and the number P of ports at the same time.

[0161] Figure 7 is a structural block diagram of a CSI-RS resource configuration device provided by an exemplary embodiment of this application, as Figure 7 shown, the device includes:

[0162] A first receiving module 720, configured to receive first information, where the first information is used to indicate the number N of port groups corresponding to a CSI-RS resource.

[0163] In a possible design, the first information is further used to indicate the number P of ports corresponding to the CSI-RS resource; or, the device further includes a second receiving module 740, and the second receiving module 740 is configured to receive second information, where the second information is used to indicate the number P of ports corresponding to the CSI-RS resource.

[0164] In a possible design, when the number P of ports corresponding to the CSI-RS resource is 4, the first information is used to indicate that the number N of port groups is 1 or 2.

[0165] In a possible design, the number of bits in the first information used to indicate the number N of port groups is 1.

[0166] In a possible design, when the number P of ports corresponding to the CSI-RS resource is 8, the first information is used to indicate that the number N of port groups is 1 or 2 or 4.

[0167] In a possible design, the number of bits in the first information used to indicate the number N of port groups is 2.

[0168] In a possible design, when the number P of ports corresponding to the CSI-RS resource is 12, the first information is used to indicate that the number N of port groups is 1 or 3.

[0169] In a possible design, the number of bits in the first information used to indicate the number N of port groups is 1.

[0170] In a possible design, when the number of ports P corresponding to the CSI-RS resource is 16, the first information is used to indicate that the number of port groups N is 1, 2, or 4.

[0171] In a possible design, the number of bits in the first information used to indicate the number of port groups N is 2.

[0172] In a possible design, when the number of ports P corresponding to the CSI-RS resource is 24, the first information is used to indicate that the number of port groups N is 1, 2, or 3.

[0173] In a possible design, the number of bits in the first information used to indicate the number of port groups N is 2.

[0174] In a possible design, when the number of ports P corresponding to the CSI-RS resource is 32, the first information is used to indicate that the number of port groups N is 1, 2, or 4.

[0175] In a possible design, the number of bits in the first information used to indicate the number of port groups N is 2.

[0176] In a possible design, each port group contains at least one consecutive port; or each port group contains at least one non-consecutive port.

[0177] In a possible design, the corresponding rule between the port group and the at least one port is configured by the access network device; or the corresponding rule between the port group and the at least one port is determined by a default rule.

[0178] In a possible design, the device further includes a reporting module 760, and the reporting module 760 is used to report capability information.

[0179] In a possible design, the capability information includes at least one of the following: supporting that the port group contains at least one consecutive port; supporting that the port group contains at least one non-consecutive port.

[0180] In a possible design, the number of ports in each port group is the same.

[0181] In a possible design, the number of port groups N is equal to the number of transmission and reception points TRP.

[0182] In a possible design, the CSI-RS resource is a non-zero power CSI-RS resource.

[0183] In a possible design, the first information is carried in at least one of the following: Radio Resource Control (RRC); Medium Access Control layer Control Element (MAC CE); Downlink Control Information (DCI).

[0184] In a possible design, the second information is carried in RRC.

[0185] Figure 8 is a structural block diagram of a configuration device for CSI-RS resources provided by an exemplary embodiment of this application, as Figure 8 shown, the device includes:

[0186] A first sending module 820, configured to send first information, where the first information is used to indicate the number of port groups N corresponding to a CSI-RS resource.

[0187] In a possible design, the first information is further used to indicate the number of ports P corresponding to the CSI-RS resource; or, the device includes a second sending module 840, and the second sending module 840 is configured to send second information, where the second information is used to indicate the number of ports P corresponding to the CSI-RS resource.

[0188] In a possible design, when the number of ports P corresponding to the CSI-RS resource is 4, the first information is used to indicate that the number of port groups N is 1 or 2.

[0189] In a possible design, the number of bits in the first information used to indicate the number of port groups N is 1.

[0190] In a possible design, when the number of ports P corresponding to the CSI-RS resource is 8, the first information is used to indicate that the number of port groups N is 1 or 2 or 4.

[0191] In a possible design, the number of bits in the first information used to indicate the number of port groups N is 2.

[0192] In a possible design, when the number of ports P corresponding to the CSI-RS resource is 12, the first information is used to indicate that the number of port groups N is 1 or 3.

[0193] In a possible design, the number of bits in the first information used to indicate the number of port groups N is 1.

[0194] In a possible design, when the number of ports P corresponding to the CSI-RS resource is 16, the first information is used to indicate that the number of port groups N is 1 or 2 or 4.

[0195] In a possible design, the number of bits used to indicate the number N of port groups in the first information is 2.

[0196] In a possible design, when the number P of ports corresponding to the CSI-RS resource is 24, the first information is used to indicate that the number N of port groups is 1 or 2 or 3.

[0197] In a possible design, the number of bits used to indicate the number N of port groups in the first information is 2.

[0198] In a possible design, when the number P of ports corresponding to the CSI-RS resource is 32, the first information is used to indicate that the number N of port groups is 1 or 2 or 4.

[0199] In a possible design, the number of bits used to indicate the number N of port groups in the first information is 2.

[0200] In a possible design, each port group contains at least one consecutive port; or each port group contains at least one non-consecutive port.

[0201] In a possible design, the corresponding rule between the port group and the at least one port is configured by the access network device; or the corresponding rule between the port group and the at least one port is determined by a default rule.

[0202] In a possible design, the device further includes a receiving module 860, and the receiving module 860 is configured to receive the capability information reported by the terminal.

[0203] In a possible design, the capability information includes at least one of the following: supporting that each port group contains at least one consecutive port; supporting that each port group contains at least one non-consecutive port.

[0204] In a possible design, the number of ports in each port group is the same.

[0205] In a possible design, the number N of port groups is equal to the number of transmission and reception points TRP.

[0206] In a possible design, the CSI-RS resource is a non-zero power CSI-RS resource.

[0207] In a possible design, the first information is carried in at least one of the following: Radio Resource Control RRC; Medium Access Control layer Control Element MAC CE; Downlink Control Information DCI.

[0208] In a possible design, the second information is carried in the RRC.

[0209] Please refer to Figure 9 , which shows a schematic structural diagram of a terminal 1600 provided in an embodiment of the present application. The terminal 1600 may include: a processor 1601, a transceiver 1602, and a memory 1603.

[0210] The processor 1601 includes one or more processing cores. The processor 1601 executes various functional applications and information processing by running software programs and modules.

[0211] The transceiver 1602 may include a receiver and a transmitter. For example, the receiver and the transmitter may be implemented as the same wireless communication component, and the wireless communication component may include a wireless communication chip and a radio frequency antenna.

[0212] The memory 1603 may be connected to the processor 1601 and the transceiver 1602.

[0213] The memory 1603 may be used to store a computer program executed by the processor. The processor 1601 is used to execute the computer program to implement each step performed by the terminal in the wireless communication system in the above method embodiment.

[0214] In addition, the memory 1603 may be implemented by any type of volatile or non-volatile storage device or a combination thereof. The volatile or non-volatile storage device includes but is not limited to: a magnetic disk or an optical disk, an electrically erasable programmable read-only memory, an erasable programmable read-only memory, a static random access memory, a read-only memory, a magnetic memory, a flash memory, a programmable read-only memory.

[0215] Among them, the process executed by the transceiver 1602 may refer to each step performed by the terminal in the above method.

[0216] Please refer to Figure 10 , which shows a schematic structural diagram of an access network device 1700 provided in an embodiment of the present application. The network device 1700 may include: a processor 1701, a transceiver 1702, and a memory 1703.

[0217] The processor 1701 includes one or more processing cores. The processor 1701 executes various functional applications and information processing by running software programs and modules.

[0218] The transceiver 1702 may include a receiver and a transmitter. For example, the transceiver 1702 may include a wired communication component, and the wired communication component may include a wired communication chip and a wired interface (such as an optical fiber interface). Optionally, the transceiver 1702 may further include a wireless communication component, and the wireless communication component may include a wireless communication chip and a radio frequency antenna.

[0219] The memory 1703 can be connected to the processor 1701 and the transceiver 1702.

[0220] The memory 1703 can be used to store a computer program executed by the processor 1701, and the processor 1701 is used to execute the computer program to implement the respective steps performed by the access network device in the wireless communication system in the above method embodiments.

[0221] In addition, the memory 1703 can be implemented by any type of volatile or non-volatile storage device or a combination thereof. The volatile or non-volatile storage devices include, but are not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memories, erasable programmable read-only memories, static random access memories, read-only memories, magnetic memories, flash memories, programmable read-only memories.

[0222] The embodiments of the present application further provide a computer-readable storage medium, in which at least one instruction, at least one segment of program, a code set or an instruction set is stored. The at least one instruction, the at least one segment of program, the code set or the instruction set is loaded and executed by a processor to enable a communication device to implement the method for configuring CSI-RS resources as described above.

[0223] The present application further provides a computer program product, which includes computer instructions stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to enable the computer program product to execute the respective steps performed by the terminal or the access network device in the method shown above.

[0224] The present application further provides a chip, which is used to run in a computer device to enable the computer device to execute the respective steps performed by the terminal or the access network device in the method shown above.

[0225] The present application further provides a computer program, which is executed by the processor of a computer device, and a network device installed with the computer program implements the respective steps performed by the terminal or the access network device in the method shown above.

[0226] Those skilled in the art should be able to realize that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented by hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. A computer-readable medium includes a computer storage medium and a communication medium, where the communication medium includes any medium that facilitates the transfer of a computer program from one place to another. The storage medium can be an available medium accessible by a general-purpose or special-purpose computer.

[0227] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present application. The singular forms "a" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0228] It should be understood that although the terms first, second, third, etc. may be used in the embodiments of the present application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the words "if" and "responsive to" as used herein can be interpreted as "when" or "upon" or "in response to determining".

[0229] The above are only exemplary embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for configuring a Channel State Information Reference Signal (CSI-RS) resource, characterized in that, The method is executed by a terminal, and the method includes: Reporting capability information; Receiving first information, where the first information is used to indicate the number of port groups N corresponding to a CSI-RS resource, and the number of port groups N is equal to the number of transmission and reception points (TRPs); when the capability information indicates that each port group supports including at least one consecutive port, each port group includes at least one consecutive port, and when the capability information indicates that each port group supports including at least one non-consecutive port, each port group includes at least one non-consecutive port; Receiving second information, where the second information is used to indicate the number of ports P corresponding to the CSI-RS resource.

2. The method according to claim 1, characterized in that, The first information is further used to indicate the number of ports P corresponding to the CSI-RS resource.

3. The method according to claim 1 or 2, wherein When the number of ports P corresponding to the CSI-RS resource is 4, the first information is used to indicate that the number of port groups N is 1 or 2.

4. The method according to claim 3, wherein The number of bits in the first information used to indicate the number of port groups N is 1.

5. The method according to claim 1 or 2, wherein When the number of ports P corresponding to the CSI-RS resource is 8, the first information is used to indicate that the number of port groups N is 1 or 2 or 4.

6. The method according to claim 5, wherein The number of bits in the first information used to indicate the number of port groups N is 2.

7. The method according to claim 1 or 2, wherein When the number of ports P corresponding to the CSI-RS resource is 12, the first information is used to indicate that the number of port groups N is 1 or 3.

8. The method according to claim 7, wherein The number of bits in the first information used to indicate the number of port groups N is 1.

9. The method according to claim 1 or 2, wherein When the number of ports P corresponding to the CSI-RS resource is 16, the first information is used to indicate that the number of port groups N is 1 or 2 or 4.

10. The method according to claim 9, wherein The number of bits in the first information used to indicate the number of port groups N is 2.

11. The method according to claim 1 or 2, wherein When the number of ports P corresponding to the CSI-RS resource is 24, the first information is used to indicate that the number of port groups N is 1 or 2 or 3.

12. The method according to claim 11, wherein The number of bits in the first information used to indicate the number of port groups N is 2.

13. The method according to claim 1 or 2, wherein When the number of ports P corresponding to the CSI-RS resource is 32, the first information is used to indicate that the number of port groups N is 1 or 2 or 4.

14. The method according to claim 13, wherein The number of bits in the first information used to indicate the number of port groups N is 2.

15. The method according to claim 1 or 2, characterized in that the corresponding rule between the port group and the at least one port is configured by an access network device; or the corresponding rule between the port group and the at least one port is determined by a default rule.

16. The method according to claim 1 or 2, characterized in that, The number of ports in each port group is the same.

17. The method according to claim 1 or 2, characterized in that the CSI-RS resource is a non-zero power CSI-RS resource.

18. The method according to claim 1 or 2, characterized in that, The first information is carried in at least one of the following: Radio Resource Control (RRC); Medium Access Control layer Control Element (MAC CE); Downlink Control Information (DCI).

19. The method according to claim 1 or 2, characterized in that the second information is carried in RRC.

20. A method for configuring a channel state information reference signal (CSI-RS) resource, characterized in that, The method is executed by an access network device, and the method includes: receiving capability information reported by a terminal; sending first information, where the first information is used to indicate the number N of port groups corresponding to a CSI-RS resource, and the number N of port groups is equal to the number of Transmission and Reception Points (TRPs); when the capability information indicates support for the port group to include at least one consecutive port, each port group includes at least one consecutive port, and when the capability information indicates support for the port group to include at least one non-consecutive port, each port group includes at least one non-consecutive port; sending second information, where the second information is used to indicate the number P of ports corresponding to the CSI-RS resource.

21. The method according to claim 20, wherein The first information is further used to indicate the number P of ports corresponding to the CSI-RS resource.

22. The method according to claim 20 or 21, characterized in that when the number P of ports corresponding to the CSI-RS resource is 4, the first information is used to indicate that the number N of port groups is 1 or 2.

23. The method according to claim 22, characterized in that the number of bits in the first information used to indicate the number N of port groups is 1.

24. The method according to claim 20 or 21, characterized in that when the number P of ports corresponding to the CSI-RS resource is 8, the first information is used to indicate that the number N of port groups is 1 or 2 or 4.

25. The method according to claim 24, characterized in that the number of bits in the first information used to indicate the number N of port groups is 2.

26. The method according to claim 20 or 21, characterized in that when the number P of ports corresponding to the CSI-RS resource is 12, the first information is used to indicate that the number N of port groups is 1 or 3.

27. The method according to claim 26, characterized in that the number of bits in the first information used to indicate the number N of port groups is 1.

28. The method according to claim 20 or 21, characterized in that when the number P of ports corresponding to the CSI-RS resource is 16, the first information is used to indicate that the number N of port groups is 1 or 2 or 4.

29. The method according to claim 28, characterized in that the number of bits in the first information used to indicate the number N of port groups is 2.

30. The method according to claim 20 or 21, characterized in that: When the number of ports P corresponding to the CSI-RS resource is 24, the first information is used to indicate that the number of port groups N is 1, 2, or 3.

31. The method according to claim 30, characterized in that: The number of bits in the first information used to indicate the number of port groups N is 2.

32. The method according to claim 20 or 21, characterized in that: When the number of ports P corresponding to the CSI-RS resource is 32, the first information is used to indicate that the number of port groups N is 1, 2, or 4.

33. The method according to claim 32, characterized in that: The number of bits in the first information used to indicate the number of port groups N is 2.

34. The method according to claim 20 or 21, characterized in that: The corresponding rule between the port group and the at least one port is configured by the access network device; Or, The corresponding rule between the port group and the at least one port is determined by a default rule.

35. The method according to claim 20 or 21, characterized in that The number of ports in each port group is the same.

36. The method according to claim 20 or 21, characterized in that: The CSI-RS resource is a non-zero power CSI-RS resource.

37. The method according to claim 20 or 21, characterized in that, The first information is carried in at least one of the following: Radio Resource Control (RRC); Medium Access Control layer Control Element (MAC CE); Downlink Control Information (DCI).

38. The method according to claim 20 or 21, characterized in that: The second information is carried in RRC.

39. A configuration device for channel state information reference signal CSI-RS resources, characterized in that, The device includes: A reporting module, configured to report capability information; A first receiving module, configured to receive first information, where the first information is used to indicate the number of port groups N corresponding to a CSI-RS resource, and the number of port groups N is equal to the number of Transmission and Reception Points (TRPs); when the capability information indicates support for the port group including at least one continuous port, each port group includes at least one continuous port, and when the capability information indicates support for the port group including at least one discontinuous port, each port group includes at least one discontinuous port; The first receiving module, configured to receive second information, where the second information is used to indicate the number of ports P corresponding to the CSI-RS resource.

40. A configuration device for a channel state information reference signal (CSI-RS) resource, characterized in that, The device includes: A receiving module, configured to receive the capability information reported by the terminal; A first sending module, configured to send first information, where the first information is used to indicate the number of port groups N corresponding to a CSI-RS resource, and the number of port groups N is equal to the number of Transmission and Reception Points (TRPs); when the capability information indicates support for the port group including at least one continuous port, each port group includes at least one continuous port, and when the capability information indicates support for the port group including at least one discontinuous port, each port group includes at least one discontinuous port; The first sending module, configured to send second information, where the second information is used to indicate the number of ports P corresponding to the CSI-RS resource.

41. A terminal, characterized in that, The terminal includes: a processor; a transceiver connected to the processor; wherein, the processor is configured to load and execute executable instructions to implement the CSI-RS resource configuration method according to any one of claims 1 to 19.

42. An access network device, characterized in that, The access network device includes: a processor; a transceiver connected to the processor; wherein, the processor is configured to load and execute executable instructions to implement the CSI-RS resource configuration method according to any one of claims 20 to 38.

43. A computer-readable storage medium, characterized in that, At least one program is stored in the computer-readable storage medium, and the at least one program is loaded and executed by a processor to implement the CSI-RS resource configuration method according to any one of claims 1 to 19, or to implement the CSI-RS resource configuration method according to any one of claims 20 to 38.

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