Communication methods, devices, and storage media

Abstract

This disclosure relates to a communication method, apparatus, device and storage medium, and includes the step of receiving first information, the first information being used to determine that a CMR (Channel Measurement Resource) contains N NZP CSI-RS (Non-Zero Power Channel State Information Reference Signal) resources, where N is a positive integer, and, if N is greater than 1, the step of determining whether a terminal selects M NZP CSI-RS resources from the N NZP CSI-RS resources to feed back, where M is less than or equal to N. By determining whether to select M NZP CSI-RS resources from the N NZP CSI-RS resources to feed back using the first information, the feasibility of coherent joint transmission communication is improved.

Description

[Technical Field]

[0001] This disclosure relates to the field of telecommunications technology, and more particularly to communication methods, apparatus, devices, and storage media. [Background technology]

[0002] Currently, a system based on coherent joint transmission (CJT) for physical downlink shared channels (PDSCH) is being considered. It is possible to support up to four transmission and receiving points (TRPs) simultaneously providing services to the same terminal. [Overview of the project] [Problems that the invention aims to solve]

[0003] To solve problems in related technologies, this publication provides communication methods, apparatus, devices, and storage media. [Means for solving the problem]

[0004] According to a first aspect of the embodiments disclosed herein, a communication method is provided which is performed by a terminal, comprising the steps of: receiving first information, which is used to determine that a channel measurement resource (CMR) contains N non-zero power channel state information reference signal (NZP CSI-RS) resources, where N is a positive integer; and, if N is greater than 1, determining whether the terminal selects and feeds back M NZP CSI-RS resources from the N NZP CSI-RS resources, where M is less than or equal to N.

[0005] In some embodiments, the first information is also used to determine at least one first beamnumber combination, where each beamnumber in the first beamnumber combination is associated with one NZP CSI-RS resource.

[0006] In some embodiments, the first information is also used to determine at least one first parameter combination, the first parameter combination being a frequency domain basis combination parameter P V It includes a non-zero coefficient parameter β.

[0007] In some embodiments, a second beam number combination and P V If the combination with β is not supported, the terminal decides not to select or provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, and the second beam count combination is a subset of the first beam count combination.

[0008] In some embodiments, a second beam number combination and P V If the combination with β is not supported, the protocol will use a second beam number combination and P V In cases where it is specified that the combination with β is not supported, and the terminal has a second beam number combination and P V If the combination with β is not supported, the terminal will use the second beam number combination and P V , supports combination with β, and when the terminal does not support dynamic switching between the specified method and the S-TRP (single transmission / reception point) communication method, the specified method employs M-TRP (multiple transmission / reception point) communication, and the second beam count combination includes at least one of the following:

[0009] In some embodiments, a third beam number combination and P VWhen the combination with β is supported, the terminal selects M NZP CSI-RS resources from N NZP CSI-RS resources for feedback, and the third beam number combination is a subset of the first beam number combination.

[0010] In some embodiments, the third beam number combination and P V When the combination with β is supported, if the protocol stipulates that the third beam number combination and P V When the combination with β is supported, and when the terminal supports the combination of the third beam number combination and P V At least one of the cases where the combination with β is supported is included.

[0011] In some embodiments, the specified method is CJT (Coherent Joint Transmission).

[0012] In some embodiments, CJT includes at least one of the following: one CMR configured by a network device includes L NZP CSI-RS resources, where L is a positive integer, and one NZP CSI-RS resource corresponds to one TRP or one TRP group; for each NZP CSI-RS resource in the plurality of NZP CSI-RS resources, independently feedback the spatial domain basis vector; for each NZP CSI-RS resource in the plurality of NZP CSI-RS resources, independently feedback the frequency domain basis vector; for each NZP CSI-RS resource in the plurality of NZP CSI-RS resources, feedback the same frequency domain basis vector.

[0013] In some embodiments, the first information is used to instruct the terminal not to select or provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, or the first information is used to instruct the terminal to select and provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources.

[0014] In some embodiments, the step further includes transmitting second information, the second information being the ability of the terminal to support dynamic switching between a designated scheme and an S-TRP communication scheme, a second beam number combination that the terminal does not support, and P V , the combination with β, the third beam number combination supported by the terminal, and P V It includes at least one of the following: a combination with β, and .

[0015] According to a second aspect of the embodiments of the present disclosure, a communication method is provided which is performed by a network device, comprising the step of transmitting first information, the first information being used to determine that a channel measurement resource (CMR) contains N non-zero power channel state information reference signal (NZP CSI-RS) resources, where N is a positive integer.

[0016] In some embodiments, the first information is also used to determine at least one first beamnumber combination, where each beamnumber in the first beamnumber combination is associated with one NZP CSI-RS resource.

[0017] In some embodiments, the first information is also used to determine at least one first parameter combination, the first parameter combination being a frequency domain basis combination parameter P VIt includes a non-zero coefficient parameter β.

[0018] In some embodiments, the first information is used to instruct the terminal not to select or provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, or the first information is used to instruct the terminal to select and provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources.

[0019] In some embodiments, the method further includes the step of receiving second information, the second information being the ability of the terminal to support dynamic switching between a designated scheme and an S-TRP communication scheme, a second beam number combination that the terminal does not support, and P V , the combination with β, the third beam number combination supported by the terminal, and P V It includes at least one of the following: a combination with β, and .

[0020] In some embodiments, the terminal has a second beam number combination and P V If the combination with β is not supported, the protocol will use a second beam number combination and P V , in cases where it is specified that combinations with β are not supported, and the terminal is a second beam number combination, P V , if the combination with β is not supported, and the terminal has a second beam number combination, P V , supports combinations with β, and when the terminal does not support dynamic switching between the specified method and the S-TRP (single transmit / receive point) communication method, the specified method employs M-TRP (multiple transmit / receive point) communication, and the second beam count combination includes at least one of the following:

[0021] In some embodiments, the terminal has a third beam number combination and P V If supporting combinations with β, the protocol supports a third beam number combination and P VWhen defining a combination with β, and when the terminal specifies a third beam number combination, P V This includes at least one of the following: , , and ,

[0022] In some embodiments, the specified method is CJT (coherent joint transmission).

[0023] In some embodiments, the CJT includes at least one of the following: the CMRs formed by the network device include L NZP CSI-RS resources, where L is a positive integer, and each NZP CSI-RS resource corresponds to one TRP or one TRP group; independently feeding back a pace domain basis vector to each NZP CSI-RS resource in the multiple NZP CSI-RS resources; independently feeding back a frequency domain basis vector to each NZP CSI-RS resource in the multiple NZP CSI-RS resources; and feeding back the same frequency domain basis vector to each NZP CSI-RS resource in the multiple NZP CSI-RS resources.

[0024] According to a third aspect of the embodiments of the present disclosure, a communication device is provided, which is configured to receive first information, which is used to determine that a channel measurement resource (CMR) contains N non-zero power channel state information reference signal (NZP CSI-RS) resources, where N is a positive integer, and a processing module is configured, if N is greater than 1, to determine whether a terminal selects and feeds back M NZP CSI-RS resources from the N NZP CSI-RS resources, where M is less than or equal to N.

[0025] In some embodiments, the first information is also used to determine at least one first beamnumber combination, where each beamnumber in the first beamnumber combination is associated with one NZP CSI-RS resource.

[0026] In some embodiments, the first information is also used to determine at least one first parameter combination, the first parameter combination being a frequency domain basis combination parameter P V It includes a non-zero coefficient parameter β.

[0027] In some embodiments, the processing module further includes a second beam number combination and P V If the combination with β is not supported, the terminal is configured to decide not to select or provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, and the second beam count combination is a subset of the first beam count combination.

[0028] In some embodiments, a second beam number combination and P V If the combination with β is not supported, the protocol will use a second beam number combination and P V In cases where it is specified that the combination with β is not supported, and the terminal has a second beam number combination and P V If the combination with β is not supported, the terminal will use the second beam number combination and P V , supports combination with β, and when the terminal does not support dynamic switching between the specified method and the S-TRP (single transmission / reception point) communication method, the specified method employs M-TRP (multiple transmission / reception point) communication, and the second beam count combination includes at least one of the following:

[0029] In some embodiments, the processing module further includes a third beam number combination and P VWhen the combination with β is supported, the terminal is configured to select and feed back M NZP CSI-RS resources from N NZP CSI-RS resources, and the third beam number combination is a subset of the first beam number combination.

[0030] In some embodiments, a third beam number combination and P V If the combination with β is supported, the protocol will be a third beam number combination and P V When specifying that it supports combinations with β, and when the terminal has a third beam number combination, P V This includes at least one of the following: , , and ,

[0031] In some embodiments, the specified method is CJT (coherent joint transmission).

[0032] In some embodiments, the CJT includes at least one of the following: a CMR comprising a network device includes L NZP CSI-RS resources, where L is a positive integer, and each NZP CSI-RS resource corresponds to a TRP or a group of TRPs; independently feeding back a space domain basis vector to each NZP CSI-RS resource in the multiple NZP CSI-RS resources; independently feeding back a frequency domain basis vector to each NZP CSI-RS resource in the multiple NZP CSI-RS resources; and feeding back the same frequency domain basis vector to each NZP CSI-RS resource in the multiple NZP CSI-RS resources.

[0033] In some embodiments, the first information is used to instruct the terminal not to select or provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, or the first information is used to instruct the terminal to select and provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources.

[0034] In some embodiments, the device further includes a transmitting module configured to transmit second information, the second information being whether the terminal supports dynamic switching between a designated scheme and an S-TRP communication scheme, a second beam number combination that the terminal does not support, and P V , the combination with β, the third beam number combination supported by the terminal, and P V It includes at least one of the following: a combination with β, and .

[0035] According to a fourth aspect of the embodiments of the present disclosure, a communication device is provided, comprising a transmitting module configured to transmit first information, which is used to determine that a channel measurement resource (CMR) contains N non-zero power channel state information reference signal (NZP CSI-RS) resources, where N is a positive integer.

[0036] In some embodiments, the first information is also used to determine at least one first beamnumber combination, where each beamnumber in the first beamnumber combination is associated with one NZP CSI-RS resource.

[0037] In some embodiments, the first information is also used to determine at least one first parameter combination, the first parameter combination being a frequency domain basis combination parameter P VIt includes a non-zero coefficient parameter β.

[0038] In some embodiments, the first information is used to instruct the terminal not to select or provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, or the first information is used to instruct the terminal to select and provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources.

[0039] In some embodiments, the device further includes a receiving module configured to receive second information, the second information being whether the terminal supports dynamic switching between a designated scheme and an S-TRP communication scheme, a second beam number combination that the terminal does not support, and P V , the combination with β, the third beam number combination supported by the terminal, and P V It includes at least one of the following: a combination with β, and .

[0040] In some embodiments, the terminal has a second beam number combination and P V If the combination with β is not supported, the protocol will use a second beam number combination and P V , in cases where it is specified that combinations with β are not supported, and the terminal is a second beam number combination, P V , if the combination with β is not supported, and the terminal has a second beam number combination, P V , supports combinations with β, and when the terminal does not support dynamic switching between the specified method and the S-TRP (single transmit / receive point) communication method, the specified method employs M-TRP (multiple transmit / receive point) communication, and the second beam count combination includes at least one of the following:

[0041] In some embodiments, the terminal has a third beam number combination and P V If supporting combinations with β, the protocol supports a third beam number combination and PV When defining a combination with β, and when the terminal specifies a third beam number combination, P V This includes at least one of the following: , , and ,

[0042] In some embodiments, the specified method is CJT (coherent joint transmission).

[0043] In some embodiments, the CJT includes at least one of the following: the CMRs formed by the network device include L NZP CSI-RS resources, where L is a positive integer, and each NZP CSI-RS resource corresponds to one TRP or one TRP group; independently feeding back a pace domain basis vector to each NZP CSI-RS resource in the multiple NZP CSI-RS resources; independently feeding back a frequency domain basis vector to each NZP CSI-RS resource in the multiple NZP CSI-RS resources; and feeding back the same frequency domain basis vector to each NZP CSI-RS resource in the multiple NZP CSI-RS resources.

[0044] According to a fifth aspect of the embodiments of the present disclosure, a communication device is provided, comprising a processor and a memory for storing instructions executable by the processor, wherein the processor is configured to carry out the method of the first aspect and any one of the first aspects.

[0045] According to a sixth aspect of the embodiments of the present disclosure, a communication device is provided, comprising a processor and a memory for storing instructions executable by the processor, wherein the processor is configured to carry out the method of the second aspect and any one of the second aspects.

[0046] According to a seventh aspect of the embodiments of the present disclosure, a non-temporary computer-readable storage medium is provided, which enables a terminal to perform the method of the first aspect and any one of the first aspects when instructions in the storage medium are executed by the terminal's processor.

[0047] According to an eighth aspect of the embodiments of the present disclosure, a non-temporary computer-readable storage medium is provided, enabling a network device to perform the method of the second aspect and any one of the second aspects when instructions in the storage medium are executed by a terminal processor.

[0048] The technical solution provided in this disclosed embodiment may have the following beneficial effects: By using first information to determine whether or not to select and feed back M NZP CSI-RS resources from among N NZP CSI-RS resources, feasibility based on CJT communication is improved.

[0049] It should be understood that the general explanation above and the detailed explanation below are illustrative and explanatory only, and do not restrict this publication. [Brief explanation of the drawing]

[0050] The attached drawings are incorporated into the specification and constitute part of the specification, illustrating embodiments of the disclosure and illustrating the principles of the disclosure together with the specification.

[0051] [Figure 1] A schematic diagram of a wireless communication system based on one embodiment is shown. [Figure 2] A flowchart of a communication method based on one embodiment is shown. [Figure 3] A flowchart of another communication method based on one embodiment is shown. [Figure 4] A flowchart of another communication method based on one embodiment is shown. [Figure 5] A flowchart of yet another communication method based on one embodiment is shown. [Figure 6]This is a schematic diagram of a communication device based on one embodiment. [Figure 7] This is a schematic diagram of another communication device based on one embodiment. [Figure 8] This is a schematic diagram of a communication device based on one embodiment. [Figure 9] This is a schematic diagram of another communication device based on one embodiment. [Modes for carrying out the invention]

[0052] Exemplary embodiments are described in detail in this disclosure, examples of which are shown in the accompanying drawings. Where the following description relates to the accompanying drawings, the same figures in different accompanying drawings indicate identical or similar elements unless otherwise noted. The embodiments described below in the exemplary embodiments do not represent all embodiments consistent with this disclosure.

[0053] The communication method relating to this disclosure is applicable to the wireless communication system 100 shown in Figure 1. This network system may include network devices 110 and terminals 120. The wireless communication system shown in Figure 1 is for illustrative purposes only, and it should be understood that the wireless communication system may include other network devices not shown in Figure 1, such as core network devices, wireless relay devices, and wireless backhaul devices. Embodiments of this disclosure do not limit the number of network devices or terminals included in this wireless communication system.

[0054] Furthermore, the wireless communication system in the embodiments of this disclosure can be understood as a network that provides wireless communication functionality. Wireless communication systems can use various communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA®), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier FDMA (SC-FDMA), and carrier sense multiple access with collision avoidance. Different networks can be classified into future evolutionary networks such as 2G (2G generation) networks, 3G networks, 4G networks, or 5G (the 5th generation wireless communication system) networks based on factors such as capacity, rate, and latency, and 5G networks are sometimes referred to as NR. For the sake of clarity, in this disclosure, wireless communication networks may be abbreviated as "networks."

[0055] Furthermore, the network device 110 referred to in this disclosure is also called a wireless access network device. This wireless access network device may be a base station, an evolved node B (eNB), a home base station, an access point (AP) in a WIFI (wireless fidelity) system, a wireless relay node, a wireless backhaul node, a transmission point (TP) or TRP, or a gNB in ​​an NR system, or a component or part of a base station. In the case of a V2X (Vehicle to Everything) system, the network device may be an in-vehicle device. It should be understood that the specific technologies and specific device forms employed in the network device in the embodiments of this disclosure are not limited.

[0056] Furthermore, the terminal 120 referred to in this disclosure may also be called a terminal device, user equipment (UE), mobile station (MS), mobile terminal (MT), etc., and is a device that provides voice and / or data connectivity to a user. For example, a terminal is a portable device with wireless connectivity, an in-vehicle device, etc. Currently, examples of terminals include smartphones (mobilephones), pocket personal computers (PPCs), handheld computers, personal digital assistants (PDAs), laptops, tablets, wearable devices, or in-vehicle devices. Furthermore, in the case of a V2X (Vehicle to Everything) communication system, the terminal device may also be an in-vehicle device. It should be understood that the embodiments of this disclosure do not limit the specific technologies or specific device forms employed in the terminal.

[0057] In the embodiments disclosed herein, the network device 110 and the terminal 120 may employ any practical wireless communication technology to transmit data to each other. Here, the transmission channel through which the network device 110 transmits data to the terminal 120 is called the downlink (DL) channel, and the transmission channel through which the terminal 120 transmits data to the network device 110 is called the uplink (UL) channel. As can be understood, the network device in this embodiment may be a base station. Of course, the network device may be any other possible network device, and the terminal may be any possible terminal, and this disclosure is not limited thereto.

[0058] Currently, a CJT-based approach for PDSCH is being considered. It can support up to four TRPs simultaneously providing services to the same terminal. The specific number of TRPs used to communicate PDSCH and / or the corresponding demodulation reference signal (DMRS) to the terminal can be determined by the network device or the terminal.

[0059] Here, the method used by the network device to make the decision is as follows: Network devices constitute channel measurement resources (CMRs) for terminals. If a CMR contains only one non-zeropower channel state information reference signal (NZP CSI-RS) resource, then one NZP CSI-RS resource corresponds to one TRP or one TRP group. Therefore, PDSCH and / or DMRS communication corresponding to the PDSCH is performed to the terminal based on one TRP or one TRP group. The terminal does not need to select an NZP CSI-RS resource. The terminal can directly provide channel state information (CSI) feedback to the NZP CSI-RS resource. Examples include space domain basis (SD basis) selection instructions, frequency domain basis (FD basis) selection instructions, non-zero coefficient reports, and rank reports. A network device configures one CMR for a terminal. If a single CMR contains K NZP CSI-RS resources (where K is a positive integer greater than 1), and the network device instructs the terminal that it does not need to re-select from the K NZP CSI-RS resources, the terminal can directly provide CSI feedback to the K NZP CSI-RS resources. The network device then communicates with the terminal via PDSCH and / or the corresponding DMRS based on these K NZP CSI-RS resources.

[0060] The terminal selection method is as follows: A network device configures a single CMR for a terminal. If a single CMR contains K NZP CSI-RS resources, and the network device has not instructed the terminal that it does not need to re-select from the K NZP CSI-RS resources, the terminal can select X resources from the K NZP CSI-RS resources, where X is less than or equal to K. The terminal can also further notify the network device of the X NZP CSI-RS resources it has selected. For example, if Y bits are used, each NZP CSI-RS resource corresponds to one bit. In one embodiment, a bit value of 1 indicates that the NZP CSI-RS resource corresponding to that bit has been selected, and a bit value of 0 indicates that the NZP CSI-RS resource corresponding to that bit has not been selected. In another embodiment, a bit value of 0 indicates that the NZP CSI-RS resource corresponding to that bit has been selected, and a bit value of 1 indicates that the NZP CSI-RS resource corresponding to that bit has not been selected. Of course, the bit value may be any other numerical value that can indicate, and / or that the NZP CSI-RS resource corresponding to the bit has been selected, and / or that the NZP CSI-RS resource corresponding to the bit has not been selected, respectively, and this disclosure is not limited thereto. In this case, the terminal reports CSI feedback for the X NZP CSI-RS resources.

[0061] However, there is currently no established theory as to how terminals select NZP CSI-RS resources and provide CSI feedback.

[0062] Accordingly, this disclosure provides a communication method, apparatus, device, and storage medium that, based on first information, selects and determines whether or not to feed back M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving feasibility based on CJT communication.

[0063] Figure 2 shows a flowchart of a communication method based on an exemplary embodiment. As shown in Figure 2, this method is performed by a terminal and includes the following steps: In step S11, the first piece of information is received.

[0064] In some embodiments, the terminal receives first information, which is used to determine that the CMR contains N NZP CSI-RS resources, where N is a positive integer.

[0065] For example, a terminal receives a first piece of information sent from a network device. This first piece of information is used to determine that the CMR contains one NZP CSI-RS resource.

[0066] For example, the terminal receives a first piece of information transmitted from the network device. This first piece of information is used to determine that the CMR contains multiple NZP CSI-RS resources.

[0067] In step S12, if N is greater than 1, the terminal decides whether to select M NZP CSI-RS resources from N NZP CSI-RS resources to provide feedback.

[0068] In some embodiments, if N is greater than 1, the terminal can decide whether or not to select and provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, where M is less than or equal to N.

[0069] It can be understood that N is greater than 1, meaning that the CMR contains multiple NZP CSI-RS resources.

[0070] For example, if the CMR contains multiple NZP CSI-RS resources, the terminal can use the first piece of information to decide whether or not to select and provide feedback on M NZP CSI-RS resources from the N available NZP CSI-RS resources.

[0071] For example, the first piece of information indicates whether the terminal selects and provides feedback on M NZP CSI-RS resources from N NZP CSI-RS resources.

[0072] For example, when a terminal receives the first piece of information, it decides, based on pre-configured rules, whether or not to select M NZP CSI-RS resources from N NZP CSI-RS resources to provide feedback. It can be understood that the pre-configured rules predefine whether or not the terminal selects M NZP CSI-RS resources from N NZP CSI-RS resources to provide feedback.

[0073] This release improves feasibility based on CJT communication by determining whether or not to select and feed back M NZP CSI-RS resources from N NZP CSI-RS resources based on the first piece of information.

[0074] In the communication method provided by the embodiment disclosed herein, the first information is also used to determine at least one first beam count combination, where each beam count in the first beam count combination is associated with one NZP CSI-RS resource.

[0075] In some embodiments, the first information can also be used to determine at least one first beamnumber combination. It can be understood that the beamnumber combination is an SD basis combination, where the first beamnumber combination includes one or more beamnumbers. Each beamnumber in the first beamnumber combination can be associated with one NZP CSI-RS resource.

[0076] For example, each beam count in the first beam count combination can be associated with one NZP CSI-RS resource in N NZP CSI-RS resources. Naturally, different beam counts will be associated with different NZP CSI-RS resources. This is because one NZP CSI-RS resource is associated with one TRP or one TRP group, and each beam count in the beam count combination corresponds to one TRP or one TRP group. Therefore, different beam counts will be associated with different NZP CSI-RS resources.

[0077] In some embodiments, a combination setting table of beam number combinations and first parameter combinations is provided. As shown in Table 1,

[0078] [Table 1]

[0079] "w / restriction" indicates that only up to rank 2 can be supported. "N / A" can be understood as not applicable.

[0080] For example, the NTRP in the first column of Table 1 refers to the number of NZP CSI-RS resources included in one CMR configured by a network device. In other words, it is the number of TRPs configured by the network device. The second column of Table 1 represents the beam count combinations. It can be seen that the beam count combinations in the second column include the first beam count combination. It can be confirmed that if the NTRP is different, the corresponding beam count combination is also different. For example, if the NTRP is 1, each beam count combination only needs to include the number of beams corresponding to one TRP. Of course, this beam count may also be the number of target beams determined from more beams. Let's call this beam count A, and assume the total number of beam counts is N1*N2. In this case, beam count A is the number of target beams selected from N1*N2. Here, N1 represents the number of ports in the first dimension, and N2 represents the number of ports in the second dimension. Of course, the total number of beam counts can also be configured by network devices, so this disclosure does not limit it. If the NTRP is greater than 1, the number of beams included in each beam count combination is the same as the number of TRPs. In other words, each beam count can be considered to correspond to one TRP, and each beam count can be considered to correspond to one NZP CSI-RS resource in the CMR.

[0081] In Table 1, "x" indicates that the corresponding combination is a supported combination as defined by the protocol. For example, if the number of TRPs is 1 and the number of beam combinations for this one TRP is 2, then {P V} can only be {1 / 4, 1 / 4, 1 / 8, 1 / 8}, and β may be 1 / 2 or 1 / 4.

[0082] Each element in Table 1 exists independently, and although these elements are listed in the same table exemplarily, it should be understood that this does not mean that all elements in the table must exist simultaneously as shown in the table. The value of each element does not depend on the values ​​of other elements in Table 1. Therefore, engineers in the art should understand that the values ​​of each element in Table 1 are independent embodiments.

[0083] The first information in this disclosure is also used to determine the number of beam combinations, and the first information allows for the selection of M NZP CSI-RS resources from N NZP CSI-RS resources to feed back, thereby improving feasibility based on CJT communication.

[0084] In a communication method provided by embodiments of the present disclosure, the first information is also used to determine at least one first parameter combination, where the first parameter combination includes a frequency domain basis combination parameter and a non-zero coefficient parameter β.

[0085] In some embodiments, the first information can also be used to determine at least one first parameter combination, where the first parameter combination is the frequency domain basis combination parameter P V It includes a non-zero coefficient parameter β.

[0086] Here, at least one first parameter combination may correspond to a first beam number combination.

[0087] For example, as shown in the second row of Table 1, the frequency domain basis combination parameter P V These are four values, namely four P V It can include, that is, it indicates that the rank is at most 4. If the rank is 4, there are 4 layers, and each layer has 1 P V Corresponds to different layers of P V This is used to determine the number of frequency domain basis to be selected in the corresponding layer. Here, the number of frequency domain basis to be selected is the total number of frequency domain basis plus P. V It can be determined by multiplying by .

[0088] For example, a larger β results in more non-zero coefficients. If the terminal needs to report the specific value of each non-zero coefficient, the signaling overhead will be greater. In this case, network devices can obtain more information, which also improves the communication performance of PDSCH and / or DMRS that supports PDSCH.

[0089] The first information in this disclosure can also determine a first parameter combination, thereby enabling a decision to select and feed back M NZP CSI-RS resources from N NZP CSI-RS resources through the first information, thereby improving feasibility based on CJT communication.

[0090] In the communication method provided by this embodiment, the second beam number combination and P V If the combination with β is not supported, the terminal decides not to select or provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources. Here, the second beam number combination is a subset of the first beam number combination.

[0091] In some embodiments, the second beam number combination and P V If the combination with β is not supported, the terminal can decide not to select or provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources. Here, the second beam number combination is a subset of the first beam number combination.

[0092] For example, the second beam number combination and P V If the combination with β is not supported, the terminal can decide, based on the first information, to select or not feed back M NZP CSI-RS resources from N NZP CSI-RS resources. Here, the second beam number combination is a subset of the first beam number combination.

[0093] For example, the second beam combination is one or more beam combinations corresponding to M NZP CSI-RS resources.

[0094] For example, the second beam number combination and P V If the combination with β is not supported, the terminal can decide, based on the first information, not to select M NZP CSI-RS resources from N NZP CSI-RS resources. In this example, since the terminal has not selected M NZP CSI-RS resources, it can be understood that the terminal will not feed back M NZP CSI-RS resources.

[0095] Also, for example, the second beam number combination and P V If the combination with β is not supported, the terminal can decide, based on the first information, not to feed back M NZP CSI-RS resources from N NZP CSI-RS resources. In this example, it can be seen that the terminal has selected M NZP CSI-RS resources but can choose not to feed back M NZP CSI-RS resources. The terminal has not selected M NZP CSI-RS resources and can therefore choose not to feed back M NZP CSI-RS resources.

[0096] In each of the above examples, since none of the terminals have provided feedback on M NZP CSI-RS resources, the network device does not perform PDSCH and / or corresponding DMRS communication based on M NZP CSI-RS resources. The network device performs PDSCH and / or corresponding DMRS communication based on N NZP CSI-RS resources. This situation can also be considered as the terminal not having selected M NZP CSI-RS resources.

[0097] This disclosure provides a scenario in which the terminal does not select or provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving feasibility based on CJT communication.

[0098] In the communication method provided by the embodiments of this disclosure, the second beam number combination and P V The situations in which the combination with β is not supported include at least one of the following: the protocol is a second beam number combination and P V , if it is specified that combinations with β are not supported; the terminal is the second beam number combination and P V , if the combination with β is not supported; the terminal has a second beam number combination and P V , supports combination with β, and if the terminal does not support dynamic switching between the specified scheme and the single (S)TRP communication scheme, where the specified scheme employs multiple (M)TRP communication and the second beam count combination includes one beam count.

[0099] In some embodiments, the second beam number combination and P V In situations where the combination with β is not supported, the protocol uses a second beam number combination and P V This includes cases where it is specified that combinations with β are not supported.

[0100] For example, in the protocol specification, the second beam number combination and P V In some cases, it may be pre-configured that combinations with β are not supported. In this case, the terminal cannot select CSI feedback for unsupported combinations. Similarly, the terminal cannot select NZP CSI-RS resources corresponding to the second beam count combination.

[0101] Taking Table 1 as an example, combinations not marked with an "x" in Table 1 can be considered combinations not supported by the protocol specification. For the terminal, there is no need to select these types of combinations and provide CSI feedback. For combinations marked with an "x" in Table 1, the second beam number combination set by the network device and P VWhen the combination with β is such as "{2,2}, {1 / 8,1 / 8,1 / 16,1 / 16},1 / 4", "{2,4}, {1 / 8,1 / 8,1 / 16,1 / 16},1 / 4", "{4,2}, {1 / 8,1 / 8,1 / 16,1 / 16},1 / 4", "{4,4}, {1 / 8,1 / 8,1 / 16,1 / 16},1 / 2", or "{4,4}, {1 / 2,1 / 2,1 / 2,1 / 2},1 / 2", the terminal does not need to select the NZP CSI-RS resource.

[0102] The second beam number combination and P mentioned above V The reason why the combination with β does not require selection is that when the terminal selects an NZP CSI-RS resource, it is equivalent to selecting one TRP. However, in the above combinations, if the first parameter combination is the same, beam number combinations where the corresponding TRP is 1 are not supported by the protocol. Therefore, the terminal does not need to select an NZP CSI-RS resource.

[0103] Of course, in the above situations where the terminal does not require NZP CSI-RS resource selection, the network device may configure the terminal to not require selection through specific information. The terminal may also decide for itself whether or not to require selection based on pre-configured rules, and this disclosure does not limit this.

[0104] In some embodiments, the second beam number combination and P V In situations where the combination with β is not supported, the terminal uses a second beam number combination and P V This includes cases where combinations with β are not supported.

[0105] For example, the terminal itself has a second beam number combination and P V It can be determined that the combination with β is not supported. For example, the terminal determines the second beam number combination and P based on all possible circumstances, such as its own measurement results, the terminal's own hardware support status, and the carrier's support status. VThe terminal determines that the combination with β is not supported. In this case, the terminal cannot select CSI feedback for the unsupported combination. Similarly, the terminal cannot select the NZP CSI-RS resource corresponding to the second beam number combination.

[0106] For example, the terminal has a second beam number combination that the terminal does not support and P V By transmitting information indicating the combination with β, network devices can be notified. Also, for example, a terminal can notify the network device of the second beam number combination and P that the terminal supports. V By sending information indicating the combination with β, it is also possible to notify network devices and implicitly indicate the situation of a combination that the terminal does not support.

[0107] Taking Table 1 as an example, among the combinations marked "x" in Table 1, the terminal can set any one or more combinations as combinations that the terminal does not support. For the terminal, there is no need to select this type of combination and perform CSI feedback. Second beam number combination and P V The combinations with β, "{2}, {1 / 4,1 / 4,1 / 8,1 / 8},1 / 4" and "{4}, {1 / 4,1 / 4,1 / 8,1 / 8},1 / 4", can be assumed to be combinations that the terminal does not support. Therefore, if the network device configures the terminal to have a TRP count of 3, the second beam count and P V If the combination with β is "{4,4,4}, {1 / 4,1 / 4,1 / 8,1 / 8}, 1 / 4", the terminal cannot select an NZP CSI-RS resource. This is because the protocol specifies that combinations with a TRP count of 2 for the same first parameter combination are not supported. On the other hand, if the TRP count is 1, the terminal does not support any combinations for the same first parameter combination. Therefore, the terminal does not need to select an NZP CSI-RS resource.

[0108] Of course, in the above situations where the terminal does not require NZP CSI-RS resource selection, the network device may configure the terminal to not require selection through specific information. The terminal may also decide for itself whether or not to require selection based on pre-configured rules, and this disclosure does not limit this.

[0109] In some embodiments, the second beam number combination and P V In situations where the combination with β is not supported, the terminal uses a second beam number combination and P V This includes situations where the combination with β is supported, and where the terminal does not support dynamic switching between the specified method and the S-TRP communication method. Here, the specified method employs M-TRP communication, and the second beam count combination includes one beam count.

[0110] For example, the terminal has a second beam number combination and P V It can support combinations with β. However, the terminal does not support dynamic switching between the specified method and the S-TRP communication method. Here, the second beam number combination includes one beam number. In this case, the terminal supports the second beam number combination and P V It is not possible to make a selection for combinations with β.

[0111] Taking Table 1 as an example, the second beam number combination and P V As combinations with β, we can assume that "{2}, {1 / 4,1 / 4,1 / 8,1 / 8},1 / 4" and "{4}, {1 / 4,1 / 4,1 / 8,1 / 8},1 / 4" are combinations supported by the terminal. At the same time, the terminal is the second beam number combination and P V It also supports combinations with β such as "{4,4,4}, {1 / 4,1 / 4,1 / 8,1 / 8}, 1 / 4". However, the terminal does not support dynamic switching between the specified method and the S-TRP communication method. In this case, the network device configures a specified method such as CJT for the terminal. The network device also configures the number of TRPs to 3, and the second beam number and P VIf the combination with β is "{4,4,4}, {1 / 4,1 / 4,1 / 8,1 / 8}, 1 / 4", the terminal cannot select one NZP CSI-RS resource from the three NZP CSI-RS resources. The terminal can only perform CSI feedback based on the three NZP CSI-RS resources and perform PDSCH and / or DMRS communication corresponding to PDSCH.

[0112] Even in this case, the network device can directly configure a combination where the TRP number is 1, that is, the second beam number combination and P V Note that the combinations with β can be directly constructed as the combinations "{2}, {1 / 4,1 / 4,1 / 8,1 / 8},1 / 4", "{4}, {1 / 4,1 / 4,1 / 8,1 / 8},1 / 4". The combinations are "{4,4}, {1 / 4,1 / 4,1 / 8,1 / 8},1 / 2", "{4,4,4}, {1 / 4,1 / 4,1 / 8,1 / 8},1 / 2", "{4,4,4}, {1 / 4,1 / 4,1 / 4,1 / 4},3 / 4", "{2,2,4,4}, {1 / 4,1 / 4,1 / 8,1 / 8},1 / 2", "{2,2,4,4}, {1 / 4,1 / 4,1 / 4,1 Since the cases of " / 4}, 3 / 4", "{4,4,4,4}, {1 / 4,1 / 4,1 / 8,1 / 8}, 1 / 2", and "{4,4,4,4}, {1 / 4,1 / 4,1 / 4,1 / 4}, 3 / 4" are similar to the case of the combination "{4,4,4}, {1 / 4,1 / 4,1 / 8,1 / 8}, 1 / 4", this disclosure does not provide further details.

[0113] Of course, the reason the terminal does not select a combination supported by the above embodiment is that the protocol specification supports combinations where the number of TRPs is 1, and the terminal can also support this combination. However, the terminal does not support dynamic switching between the specified method and the S-TRP communication method, and if the specified method employs M-TRP communication, the terminal cannot switch and is forced to select multi-TRP. Therefore, the terminal cannot select a combination where the number of TRPs is 1.

[0114] It is understood that different terminal capabilities will result in different supported CMR configurations. For example, some terminals can support dynamic switching between S-TRP and CJT communication methods, while others do not. In such situations, it is necessary to impose restrictions on the CMR.

[0115] This release provides a scenario where the terminal does not select or provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving feasibility based on CJT communication.

[0116] The communication method provided in this disclosed embodiment involves a third beam number combination and P V If the combination with β is supported, based on the first information, the terminal decides to select and feed back M NZP CSI-RS resources from N NZP CSI-RS resources. Here, the third beam number combination is a subset of the first beam number combination.

[0117] In some embodiments, a third beam number combination and P V If the combination with β is supported, the terminal can decide, based on the first information, to select and feed back M NZP CSI-RS resources from N NZP CSI-RS resources, where the third beam number combination is a subset of the first beam number combination.

[0118] For example, a third beam combination is a combination of one or more beams corresponding to M NZP CSI-RS resources.

[0119] For example, the third beam number combination and P VWhen the combination with β is supported, the terminal can determine to select M NZP CSI-RS resources from N NZP CSI-RS resources based on the first information. The terminal can also feedback the selected M NZP CSI-RS resources.

[0120] It can be understood that since the terminal selects and feedbacks M NZP CSI-RS resources, the network device can perform PDSCH and / or DMRS communication corresponding to PDSCH based on the M NZP CSI-RS resources.

[0121] The present disclosure provides a situation where the terminal selects and feedbacks M NZP CSI-RS resources from N NZP CSI-RS resources, improving the feasibility based on CJT communication.

[0122] In the communication method provided by the embodiment of the present disclosure, the third beam number combination and P V The situation where the combination with β is supported includes at least one of the following: the third beam number combination and P V supported by the protocol specification and the combination with β; the third beam number combination supported by the terminal and P V and the combination with β.

[0123] In some embodiments, the situation where the third beam number combination and the combination with P V and β are supported can include the third beam number combination supported by the protocol specification and the combination with P V and β.

[0124] For example, in the protocol specification, it may be preset that the combination of the third beam number combination and P V and β is supported. The terminal can choose to perform CSI feedback for the supported combination. Correspondingly, the terminal can also select the NZP CSI-RS resources corresponding to the third beam number combination.

[0125] Taking Table 1 as an example, the third beam number combination and P V The combinations with β are "{2,2,2,2}, {1 / 8,1 / 8,1 / 16,1 / 16}, 1 / 4". The protocol does not support combinations with a TRP count of 1 in the same first parameter combination. Therefore, a terminal cannot select only one NZP CSI-RS resource from four NZP CSI-RS resources. However, a terminal can select two NZP CSI-RS resources or three NZP CSI-RS resources from four NZP CSI-RS resources. Naturally, if the terminal itself does not support combinations with a TRP count of 2, the terminal cannot select only two NZP CSI-RS resources from four NZP CSI-RS resources.

[0126] In some embodiments, a third beam number combination and P V The situations in which the combination with β is supported include the third beam number combination supported by the terminal and P V This can include combinations with β.

[0127] For example, the terminal itself has a third beam number combination and P V , it can be determined that the combination with β is supported. For example, the terminal can determine the third beam number combination and P based on arbitrary possibilities such as its own measurement results, the terminal's own hardware support status, and the carrier's support status. V The terminal determines that the combination with β is supported. The terminal can choose to provide CSI feedback for the supported combinations. Correspondingly, the terminal can also select an NZP CSI-RS resource corresponding to the third beam number combination.

[0128] The third beam number combination supported by the terminal and P V It is understood that the combination with β must be one that is supported by the protocol specifications. This disclosure provides a scenario in which a terminal selects and provides feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving feasibility based on CJT communication.

[0129] In the communication method provided by the embodiments of this disclosure, the designated scheme is CJT.

[0130] In some embodiments, the PDSCH and / or the DMRS corresponding to the PDSCH may be configured to communicate using a specified scheme, or they may be configured to communicate using CJT.

[0131] Here, we can demonstrate that CJT uses multiple TRPs to conduct joint transmission.

[0132] This release provides a scenario in which, when communication is performed via CJT, the terminal selects and feeds back M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the feasibility of CJT communication.

[0133] In a communication method provided by an embodiment of the present disclosure, the CJT includes at least one of the following: a CMR comprising a network device includes L NZP CSI-RS resources, where L is a positive integer and each NZP CSI-RS resource corresponds to a TRP or a group of TRPs; independently feeds back a space domain basis vector to each NZP CSI-RS resource in the plurality of NZP CSI-RS resources; independently feeds back a frequency domain basis vector to each NZP CSI-RS resource in the plurality of NZP CSI-RS resources; and feeds back the same frequency domain basis vector to each NZP CSI-RS resource in the plurality of NZP CSI-RS resources.

[0134] In some embodiments, the designation scheme includes the fact that one CMR configured by a network device contains L NZP CSI-RS resources, where L is a positive integer and one NZP CSI-RS resource corresponds to one TRP or one TRP group.

[0135] If L is 1, it means that one CMR contains only one NZP CSI-RS resource, i.e., it corresponds to only one TRP or one TRP group. In this case, the designation method is S-TRP. If L is greater than 1, it means that one CMR contains multiple NZP CSI-RS resources, i.e., it corresponds to multiple TRPs or multiple TRP groups. In this case, the designation method is M-TRP.

[0136] Of course, in other embodiments, the designation method includes at least one of the multiple CMRs that make up the network device containing L NZP CSI-RS resources.

[0137] For example, L can typically take the values ​​of 1, 2, 3, or 4. This means that one CMR usually contains 1 to 4 NZP CSI-RS resources.

[0138] For example, if L is equal to 1, the terminal does not need to select an NZP CSI-RS resource. The network device can use the channel corresponding to this single NZP CSI-RS resource directly to communicate with the terminal via PDSCH and / or DMRS corresponding to PDSCH. The terminal also only needs to provide CSI feedback to this single NZP CSI-RS resource.

[0139] For example, if L is greater than 1, the network device sets a corresponding limit. For instance, the network device is configured to indicate that the terminal does not need to make a selection. In this case, the terminal also does not need to select one or more NZP CSI-RS resources from multiple NZP CSI-RS resources. The network device uses channels corresponding to these L NZP CSI-RS resources to communicate with the terminal via PDSCH and / or DMRS corresponding to PDSCH. The terminal only needs to provide CSI feedback to these L NZP CSI-RS resources.

[0140] Furthermore, if L is greater than 1, no restrictions are set on the network device. In this case, the terminal can select one or more NZP CSI-RS resources from L NZP CSI-RS resources. For example, the terminal selects K NZP CSI-RS resources from L NZP CSI-RS resources. It can be understood that K is a positive integer and that K is less than or equal to L. The terminal needs to send instruction information to the network device to notify it of which K NZP CSI-RS resources it has selected. The network device can then communicate with the terminal via PDSCH and / or DMRS corresponding to PDSCH based on the channels corresponding to these K NZP CSI-RS resources. The terminal only needs to provide CSI feedback for these K NZP CSI-RS resources.

[0141] In some embodiments, the designation scheme includes independently feeding back a space domain basis vector to each NZP CSI-RS resource.

[0142] For example, a terminal independently feeds back a space domain basis vector to each NZP CSI-RS resource. That is, the terminal selects a specified number of H beams from the total number of CSI-RS ports N1*N2, where H is a positive integer. N1 represents the number of ports in the first dimension, and N2 represents the number of ports in the second dimension.

[0143] In some embodiments, the designation scheme includes independently feeding back frequency domain basis vectors to each NZP CSI-RS resource.

[0144] For example, the terminal independently feeds back frequency domain basis vectors to each NZP CSI-RS resource. That is, for each NZP CSI-RS resource, the terminal selects v frequency domain basis vectors from N3 frequency domain basis vectors. Here, v is a positive integer, and N3 represents the product of the number of channel quality indicator (CQI) subbands and the number of precoding matrix indicator (PMI) subbands.

[0145] In some embodiments, the designation scheme includes feeding back the same frequency domain basis vector to each NZP CSI-RS resource.

[0146] For example, the terminal feeds back the same frequency domain basis vector to each NZP CSI-RS resource. That is, for each NZP CSI-RS resource, the terminal selects the same v frequency domain basis vectors from N3 frequency domain basis vectors.

[0147] In some embodiments, the designation scheme includes a network device configuring multiple TRPs. It is found that each TRP corresponds to one NZP CSI-RS resource.

[0148] This disclosure provides several possible scenarios for the specified scheme. This allows for the selection of M NZP CSI-RS resources from N NZP CSI-RS resources based on first information to be fed back, thereby improving feasibility based on CJT communication.

[0149] In a communication method provided by an embodiment of the present disclosure, the first information is used to instruct the terminal not to select or provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources. Alternatively, the first information is used to instruct the terminal to select and provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources.

[0150] In some embodiments, the first information can be used to instruct the terminal not to select or provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources.

[0151] For example, the first piece of information transmitted by a network device may instruct the terminal to select or not provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources. Based on the instructions in the first piece of information, the terminal decides to select or not provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources.

[0152] In some embodiments, the first information is used to instruct the terminal to select and provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources.

[0153] For example, the first information transmitted by a network device can instruct the terminal to select and feedback M NZP CSI-RS resources from N NZP CSI-RS resources. The terminal determines to select and feedback M NZP CSI-RS resources from N NZP CSI-RS resources based on the instruction of the first information.

[0154] The first information of the present disclosure can directly instruct whether the terminal selects and feedbacks M NZP CSI-RS resources from N NZP CSI-RS resources, improving the feasibility based on CJT communication.

[0155] In the communication method provided by the embodiment of the present disclosure, FIG. 3 shows a flowchart of another communication method based on an embodiment. As shown in FIG. 3, the method can further include the following steps: In step S21, transmit the second information.

[0156] In some embodiments, the terminal can transmit the second information.

[0157] For example, the terminal can transmit the second information to the network device.

[0158] In some embodiments, the second information includes at least one of the following: the ability of the terminal to support dynamic switching between the specified mode and the S-TRP communication mode; the combination of the second beam number combination supported by the terminal and P V and β; the combination of the third beam number combination not supported by the terminal and P V and β.

[0159] In some embodiments, the second information includes the ability of the terminal to support dynamic switching between the specified mode and the S-TRP communication mode.

[0160] For example, the terminal transmits second information to the network device indicating whether or not the terminal supports dynamic switching between the specified method and the S-TRP communication method, and notifies the network device that the terminal is capable of supporting dynamic switching between the specified method and the S-TRP communication method.

[0161] In some embodiments, the second information is a second beam number combination and P that the terminal does not support. V This includes combinations with β.

[0162] For example, the terminal has a second beam number combination that the terminal does not support and P V , second information including combinations with β is sent to the network device, and the second beam number combination and P that the terminal does not support V The combination with β is notified to the network device.

[0163] In some embodiments, the second information is the third beam number combination supported by the terminal and P V This includes combinations with β.

[0164] For example, the terminal supports a third beam number combination and P V The terminal transmits a second piece of information, including combinations with β, to the network device, along with a third beam number combination supported by the terminal and P. V The combination with β is notified to the network device.

[0165] The terminal of this disclosure can further report second information to a network device and, through the first information, decide whether or not to select and feed back M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving feasibility based on CJT communication.

[0166] Based on a similar concept, this disclosure also provides a communication method that is executed on the network device side.

[0167] Figure 4 shows a flowchart of another communication method based on one embodiment. As shown in Figure 4, this method is performed by a network device and can include the following steps: In step S31, the first piece of information is transmitted.

[0168] In some embodiments, the network device transmits first information, which can be used to determine that the CMR contains N NZP CSI-RS resources, where N is a positive integer.

[0169] For example, a network device sends a piece of information to a terminal. This piece of information is used to determine that the CMR contains one NZP CSI-RS resource.

[0170] For example, a network device sends a first piece of information to a terminal. This first piece of information is used to determine that the CMR contains multiple NZP CSI-RS resources.

[0171] In some embodiments, if N is greater than 1, the first information is also used to determine whether the terminal selects and feeds back M NZP CSI-RS resources from N NZP CSI-RS resources.

[0172] In some embodiments, if N is greater than 1, the first information is used to determine whether the terminal selects and feeds back M NZP CSI-RS resources from N NZP CSI-RS resources, where M is less than or equal to N.

[0173] It can be understood that N is greater than 1, meaning that the CMR contains multiple NZP CSI-RS resources.

[0174] For example, if the CMR contains multiple NZP CSI-RS resources, the first piece of information can be used to determine whether the terminal selects M NZP CSI-RS resources from N NZP CSI-RS resources to provide feedback.

[0175] For example, the first piece of information indicates whether the terminal selects and provides feedback on M NZP CSI-RS resources from N NZP CSI-RS resources.

[0176] For example, when a terminal receives the first piece of information, it decides, based on a preconfiguration rule, whether to select and feed back M NZP CSI-RS resources from N NZP CSI-RS resources. It can be understood that the preconfiguration rule predefines whether the terminal selects and feeds back M NZP CSI-RS resources from N NZP CSI-RS resources.

[0177] This release improves the flexibility of communications based on the unified TCI state by determining whether or not to select and feed back M NZP CSI-RS resources from N NZP CSI-RS resources based on the first piece of information.

[0178] In the communication method provided by the embodiment disclosed herein, the first information is also used to determine at least one first beam count combination, where each beam count in this first beam count combination is associated with one NZP CSI-RS resource.

[0179] For each embodiment in which the first information determines at least one first beam number combination, it can be understood that one can refer to the corresponding embodiment on the terminal side and the description of the related embodiment, which will not be further detailed in this disclosure.

[0180] The first information in this disclosure can also determine beam number combinations, thereby improving the flexibility of communication based on a unified TCI state by determining whether or not to select and feed back M NZP CSI-RS resources from N NZP CSI-RS resources based on the first information.

[0181] In a communication method provided by an embodiment of the present disclosure, the first information is also used to determine at least one first parameter combination, where the first parameter combination is a frequency domain basis combination parameter P V This includes a parameter β with non-zero coefficients.

[0182] The second piece of information is used to determine each embodiment of at least one first parameter combination, and it is understood that the corresponding embodiment on the terminal side and the description of the related embodiment can be referenced, which are not described further in this disclosure.

[0183] The first information in this disclosure is used to determine a first parameter combination, which makes it possible to determine whether or not to select and feed back M NZP CSI-RS resources from N NZP CSI-RS resources through the first information, thereby improving the flexibility of communication based on a unified TCI state.

[0184] In a communication method provided by an embodiment of the present disclosure, the first information is used to instruct the terminal not to select or provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, or the first information is used to instruct the terminal to select and provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources.

[0185] Each embodiment of the configuration of the first information can be understood by referring to the corresponding embodiment on the terminal side and the description of related embodiments, and will not be described in further detail in this disclosure.

[0186] The first piece of information in this disclosure allows a terminal to directly instruct whether or not to select and feed back M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the flexibility of communication based on a unified TCI state.

[0187] In the communication method provided by the embodiments of this disclosure, Figure 5 shows a flowchart of another communication method based on one embodiment. As shown in Figure 5, the method may further include the following steps: In step S41, the second piece of information is received.

[0188] In some embodiments, the network device can receive second information.

[0189] For example, a network device can receive second information transmitted from a terminal.

[0190] In some embodiments, the second information includes at least one of the following: whether the terminal supports dynamic switching between the specified method and the S-TRP communication method; and the second beam number combinations and P that the terminal supports. V , combination with β; third beam number combination and P not supported by the terminal V , in combination with β.

[0191] Regarding each embodiment of the second information configuration, it can be understood that one can refer to the descriptions of the corresponding embodiments and related embodiments on the terminal side, and no further details are provided in this disclosure.

[0192] The terminal of this disclosure can also report second information to a network device, which, through the first information, decides whether or not to select and feed back M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the flexibility of communication based on the unified TCI state.

[0193] In the communication method provided by the embodiments of this disclosure, the second beam number combination and P VIf the combination with β is not supported by the terminal, the first information is used to determine that the terminal will not select or provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, where the second beam number combination is a subset of the first beam number combination.

[0194] In some embodiments, the second beam number combination and P V If the combination with β is not supported, the first information can be used to determine that the terminal does not select or provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources. Here, the second beam number combination is a subset of the first beam number combination.

[0195] The second beam number combination and P V In cases where the combination with β is not supported, it is understood that each embodiment of the first information can refer to the corresponding embodiment on the terminal side and the description of the related embodiment, which will not be further detailed in this disclosure.

[0196] This disclosure provides a scenario in which a terminal does not select or provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the flexibility of communications based on a unified TCI state.

[0197] In the communication method provided by the embodiments of this disclosure, the second beam number combination and P V Situations in which the combination with β is not supported by the terminal include at least one of the following: the protocol is a second beam number combination and P V It is specified that it does not support combinations with β; the terminal is the second beam number combination and P V , does not support combinations with β; terminals with second beam number combination and P VIt does not support combinations with β, and the terminal does not support dynamic switching between the specified method and the S-TRP communication method. Here, the specified method employs M-TRP communication, and the second beam count combination includes one beam count.

[0198] The second beam number combination and P V For each embodiment that is not supported in combination with β, it is understood that you can refer to the corresponding embodiment on the terminal side and the description of the related embodiment, and this disclosure will not provide further details.

[0199] This disclosure provides a scenario in which a terminal does not select or provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the flexibility of communications based on a unified TCI state.

[0200] In the communication method provided by the embodiments of this disclosure, a third beam number combination and P V If the combination with β is supported by the terminal, the first information is used to determine which M NZP CSI-RS resources the terminal selects from N NZP CSI-RS resources and provides feedback, where the third beam number combination is a subset of the first beam number combination.

[0201] In some embodiments, a third beam number combination and P V If the combination with β is supported, the first information can be used to determine which NZP CSI-RS resources the terminal selects and feeds back from N NZP CSI-RS resources. Here, the third beam number combination is a subset of the first beam number combination.

[0202] The third beam number combination and P V If a combination with β is supported, it can be understood that for each embodiment of the first information, one can refer to the corresponding embodiment on the terminal side and the description of the related embodiment, which will not be described further in this disclosure.

[0203] This disclosure provides a scenario in which a terminal selects and feeds back M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the flexibility of communication based on a unified TCI state.

[0204] In the communication method provided by the embodiments of this disclosure, a third beam number combination and P V The situations in which the combination with β is supported by the terminal include at least one of the following: a third beam number combination supported by the protocol, and P V , in combination with β; the third beam number combination supported by the terminal, and P V , in combination with β.

[0205] The third beam number combination and P V For each embodiment that supports combinations with β, it is understood that you can refer to the descriptions of the corresponding embodiments and related embodiments on the terminal side, and this disclosure will not provide further details.

[0206] This disclosure provides a scenario in which a terminal selects and feeds back M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the flexibility of communication based on a unified TCI state.

[0207] In the communication method provided by the embodiments of this disclosure, the designated scheme is CJT.

[0208] For each embodiment in which the designation method is CJT, it is understood that one can refer to the descriptions of each embodiment in which the terminal side designation method is CJT and related embodiments, and this disclosure will not provide further details.

[0209] This release provides a scenario in which, when communicating via CJT, a terminal selects and provides feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the feasibility of CJT communication.

[0210] In a communication method provided by embodiments of the present disclosure, the CJT includes at least one of the following: a CMR comprising a network device includes L NZP CSI-RS resources, where L is a positive integer and each NZP CSI-RS resource corresponds to a TRP or a group of TRPs; independently feeds back a space domain basis vector to each NZP CSI-RS resource in the plurality of NZP CSI-RS resources; independently feeds back a frequency domain basis vector to each NZP CSI-RS resource in the plurality of NZP CSI-RS resources; and feeds back the same frequency domain basis vector to each NZP CSI-RS resource in the plurality of NZP CSI-RS resources.

[0211] Each embodiment included in the specified method can be understood by referring to the descriptions of the corresponding embodiments and related embodiments on the terminal side, and will not be described in further detail in this disclosure.

[0212] This disclosure provides multiple possible scenarios for a specified scheme. This allows for the selection of M NZP CSI-RS resources from N NZP CSI-RS resources to be fed back through first information, thereby improving the flexibility of communication based on a unified TCI state.

[0213] It should be noted that the various embodiments / examples involved in the embodiments of this disclosure may be used in combination with the embodiments described above or independently, as can be seen by those skilled in the art. Whether used alone or in combination with the embodiments described above, the principles of implementation are similar. Some embodiments of this disclosure are described in combination embodiments. Of course, those skilled in the art will understand that such examples do not limit the embodiments of this disclosure.

[0214] Based on the same idea, embodiments of this disclosure also provide communication devices.

[0215] To implement the functions described above, it should be understood that the communication device provided in the embodiments of this disclosure consists of hardware structures and / or software modules corresponding to the execution of each function. In combination with the various example units and algorithmic steps disclosed in the embodiments of this disclosure, the embodiments of this disclosure can be implemented in hardware form or in combination with hardware and computer software. Whether a particular function is executed as hardware or as computer software driving the hardware depends on the specific application and design constraints of the technical solution. A person skilled in the art may implement the described functions using different methods for each specific application, but such implementations should not be considered outside the scope of the technical solutions of the embodiments of this disclosure.

[0216] Figure 6 shows a schematic diagram of a communication device according to one embodiment. Referring to Figure 6, the device 200 includes a receiving module 201 and a processing module 202, the receiving module 201 receiving first information which is used to determine that the CMR contains N NZP CSI-RS resources, where N is a positive integer, and the processing module 202 is used to determine whether the terminal selects and feeds back M NZP CSI-RS resources from the N NZP CSI-RS resources if N is greater than 1, where M is less than or equal to N.

[0217] This disclosure improves feasibility based on CJT communication by determining whether or not to select and feed back M NZP CSI-RS resources from N NZP CSI-RS resources based on first information.

[0218] In some embodiments, the first information is also used to determine at least one first beamnumber combination, where each beamnumber in the first beamnumber combination is associated with one NZP CSI-RS resource.

[0219] The first information in this disclosure is also used to determine beam number combinations, thereby determining whether or not to select and feed back M NZP CSI-RS resources from N NZP CSI-RS resources through the first information, thereby improving feasibility based on CJT communication.

[0220] In some embodiments, the first information is also used to determine at least one first parameter combination, where the first parameter combination is a frequency domain basis combination parameter P V This includes a parameter β with non-zero coefficients.

[0221] The first information in this disclosure is further used to determine a first parameter combination, thereby enabling a decision to select and feed back M NZP CSI-RS resources from N NZP CSI-RS resources through the first information, thereby improving feasibility based on CJT communication.

[0222] In some embodiments, the processing module 202 further includes a second beam number combination and P V In situations where the combination with β is not supported, the terminal is configured to decide not to select or provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, where the second beam count combination is a subset of the first beam count combination.

[0223] This disclosure provides a scenario in which the terminal does not select or provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving feasibility based on CJT communication.

[0224] In some embodiments, the second beam number combination and P V The situations in which the combination with β is not supported include at least one of the following: the protocol is a second beam number combination and P VIt is specified that it does not support combinations with β; the terminal is the second beam number combination and P V , does not support combinations with β; terminals with second beam number combination and P V It supports combinations with β, and the terminal does not support dynamic switching between the specified method and the single transmit / receive point S-TRP communication method. Here, the specified method employs multi-transmit / receive point M-TRP communication, and the second beam count combination includes one beam count.

[0225] This release provides a scenario where the terminal does not select or provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving feasibility based on CJT communication.

[0226] In some embodiments, the processing module 202 further includes a third beam number combination and P V If the combination with β is supported, it is used to determine which M NZP CSI-RS resources the terminal selects from N NZP CSI-RS resources and provides feedback, where the third beam number combination is a subset of the first beam number combination.

[0227] This disclosure provides a scenario in which a terminal selects and provides feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving feasibility based on CJT communication.

[0228] In some embodiments, a third beam number combination and P V The conditions under which the combination with β is supported include at least one of the following: a third beam number combination supported as defined in the protocol and P V , combination with β, third beam number combination supported by the terminal and P V , in combination with β.

[0229] This release provides a scenario in which a terminal selects and provides feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, improving feasibility based on CJT communication.

[0230] In some embodiments, the specified method is coherent joint transmission (CJT).

[0231] This disclosure provides a scenario in which, when communication is performed via CJT, the terminal selects and feeds back M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the feasibility of CJT communication.

[0232] In some embodiments, the CJT includes at least one of the following: a CMR comprising a network device includes L NZP CSI-RS resources, where L is a positive integer and each NZP CSI-RS resource corresponds to a TRP or a group of TRPs; independently feeding back a space domain basis vector to each NZP CSI-RS resource in the multiple NZP CSI-RS resources; independently feeding back a frequency domain basis vector to each NZP CSI-RS resource in the multiple NZP CSI-RS resources; and feeding back the same frequency domain basis vector to each NZP CSI-RS resource in the multiple NZP CSI-RS resources.

[0233] This disclosure provides multiple possible scenarios for the specified method. This allows for the selection of M NZP CSI-RS resources from N NZP CSI-RS resources to be fed back through the first piece of information, thereby improving feasibility based on CJT communication.

[0234] In some embodiments, the first information is used to instruct the terminal not to select or feedback M NZP CSI-RS resources from N NZP CSI-RS resources, or the first information is used to instruct the terminal to select and feedback M NZP CSI-RS resources from N NZP CSI-RS resources.

[0235] The first information of the present disclosure can directly instruct whether the terminal selects and feedbacks M NZP CSI-RS resources from N NZP CSI-RS resources, improving the feasibility based on CJT communication.

[0236] In some embodiments, the apparatus 200 further includes a transmission module 203 for transmitting the second information, and the second information includes at least one of the following: the ability of the terminal to support dynamic switching between the specified mode and the S-TRP communication mode, the second number of beams not supported by the terminal, and the combination of P V , β, the third number of beams supported by the terminal, and the combination of P V , β.

[0237] The terminal of the present disclosure reports the second information to the network device and can also determine whether to select and feedback M NZP CSI-RS resources from N NZP CSI-RS resources based on the first information, improving the feasibility based on CJT communication.

[0238] FIG. 7 is a schematic diagram of another communication device based on an embodiment. Referring to FIG. 7, the device 300 includes a transmission module 301, and the transmission module 301 is configured to transmit the first information, and the first information is used to determine that the CMR includes N NZP CSI-RS resources, where N is a positive integer.

[0239] The present disclosure improves the feasibility based on CJT communication by determining whether to select and feedback M NZP CSI-RS resources from N NZP CSI-RS resources according to first information.

[0240] In some embodiments, the first information is also used to determine at least one first beam number combination, where each beam number in the first beam number combination is associated with one NZP CSI-RS resource respectively.

[0241] The first information of the present disclosure can also be used to determine a beam number combination, whereby the feasibility based on CJT communication is improved by determining whether to select and feedback M NZP CSI-RS resources from N NZP CSI-RS resources according to the first information.

[0242] In some embodiments, the first information is also used to determine at least one first parameter combination, where the first parameter combination includes a frequency domain basis combination parameter P V and a non-zero coefficient parameter β.

[0243] The first information of the present disclosure can also be used to determine a first parameter combination, whereby the feasibility based on CJT communication is improved by determining whether to select and feedback M NZP CSI-RS resources from N NZP CSI-RS resources according to the first information.

[0244] In some embodiments, the first information is used to instruct the terminal not to select or feedback M NZP CSI-RS resources from N NZP CSI-RS resources, or the first information is used to instruct the terminal to select and feedback M NZP CSI-RS resources from N NZP CSI-RS resources.

[0245] The first piece of information in this disclosure allows a terminal to directly instruct whether or not to select and feed back M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving feasibility based on CJT communication.

[0246] In some embodiments, the device 300 further includes a receiving module 302 that receives second information, the second information including at least one of the following: whether the terminal supports dynamic switching between a specified method and an S-TRP communication method, the second number of beams that the terminal does not support, and P V , in combination with β, the third beam number supported by the terminal, and P V , in combination with β.

[0247] The terminal of this disclosure can further report second information to a network device and, based on the first information, decide whether or not to select and feed back M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving feasibility based on CJT communication.

[0248] In some embodiments, the second beam number combination and P V The situation in which the combination with β is not supported by the terminal includes at least one of the following: the protocol is a second beam number combination and P V It is specified that it does not support combinations with β; the terminal is the second beam number combination and P V , does not support combinations with β; terminals with second beam number combination and P V It supports combinations with β, and the terminal does not support dynamic switching between the specified method and the single transmit / receive point S-TRP communication method, where the specified method employs multi transmit / receive point M-TRP communication, and the second beam count combination includes one beam count.

[0249] This release provides a scenario where the terminal does not select or provide feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving feasibility based on CJT communication.

[0250] In some embodiments, a third beam number combination and P V The situations in which the combination with β is supported by the terminal include at least one of the following: a third beam number combination and P supported by the protocol specification. V , combination with β; third beam number combination and P supported by the terminal V , in combination with β.

[0251] This release provides a scenario in which a terminal selects and provides feedback on M NZP CSI-RS resources from N NZP CSI-RS resources, improving feasibility based on CJT communication.

[0252] In some embodiments, the designated method is coherent joint transmission (CJT).

[0253] This disclosure provides a scenario in which, when communication is performed via CJT, the terminal selects and feeds back M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the feasibility of CJT communication.

[0254] In some embodiments, the CJT includes at least one of the following: a CMR comprising a network device includes L NZP CSI-RS resources, where L is a positive integer and each NZP CSI-RS resource corresponds to a TRP or a group of TRPs; independently feeding back a space domain basis vector to each NZP CSI-RS resource in the multiple NZP CSI-RS resources; independently feeding back a frequency domain basis vector to each NZP CSI-RS resource in the multiple NZP CSI-RS resources; and feeding back the same frequency domain basis vector to each NZP CSI-RS resource in the multiple NZP CSI-RS resources.

[0255] This disclosure provides several possible scenarios in the specified scheme. This allows for a decision to select and feed back M NZP CSI-RS resources from N NZP CSI-RS resources through first information, thereby improving feasibility based on CJT communication.

[0256] It can be understood that the above-described apparatus 300 may also include any possible modules, such as processing modules, and the disclosure is not limited thereto.

[0257] The specific manner in which each module performs its operation in the apparatus of the above embodiment has been described in detail in the method embodiment, so it will not be described in detail here.

[0258] Figure 8 is a schematic diagram of a communication device according to an exemplary embodiment. For example, device 400 may be any terminal such as a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness device, or personal digital assistant.

[0259] Referring to FIG. 8, the device 400 can include one or more components such as a processing component 402, a memory 404, a power component 406, a multimedia component 408, an audio component 410, an input / output (I / O) interface 412, a sensor component 414, and a communication component 416.

[0260] The processing component 402 typically controls the overall operation of the device 400 related to, for example, display, telephone calls, data communication, camera operation, recording operations, etc. The processing component 402 can include one or more processors 420 that execute instructions for completing all or some of the steps of the above-described methods. Further, the processing component 402 can include one or more modules that facilitate interaction between the processing component 402 and other components. For example, the processing component 402 can include a multimedia module that facilitates interaction between the multimedia component  408 and the processing component 402.

[0261] The memory 404 is configured to store various types of data to support operation on the device 400. Examples of such data include instructions for any application or method operating on the device 400, contact data, phone book data, messages, images, videos, etc. The memory 404 can be implemented by any type of volatile or non-volatile storage device such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, optical disk, or a combination thereof.

[0262] The power supply component 406 supplies power to various components of device 400. The power supply component 406 may include a power management system, one or more power supplies, and other components related to the generation, management, and distribution of power for device 400.

[0263] The multimedia component 408 includes a screen that provides an output interface between the device 400 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen is implemented as a touch screen and can receive input signals from the user. The touch panel includes one or more touch sensors for sensing touches, slides, and gestures on the touch panel. The touch sensors can not only sense the boundary of a touch or slide operation but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 408 includes a front camera and / or a rear camera. When the device 400 is in an operating mode such as shooting mode or video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or may have a focal length and optical zoom capability.

[0264] The audio component 410 is configured to output and / or input audio signals. For example, the audio component 410 includes a microphone (MIC) configured to receive external audio signals when the device 400 is in an operating mode such as call mode, recording mode, or voice recognition mode. The received audio signals may be further stored in memory 404 or transmitted via communication component 416. In some embodiments, the audio component 410 further includes a speaker for outputting audio signals.

[0265] The I / O interface 412 provides an interface between the processing component 402 and peripheral interface modules, which may include a keyboard, click wheel, buttons, etc. These buttons include, but are not limited to, a homepage button, volume buttons, a start button, and a lock button.

[0266] The sensor component 414 includes one or more sensors to provide the device 400 with various forms of state evaluation. For example, the sensor component 414 may detect the on / off state of the device 400, the relative position of components (e.g., the display and keypad of the device 400), changes in the position of the device 400 or one of its components, the presence or absence of user contact with the device 400, the orientation or acceleration / deceleration of the device 400, and changes in the temperature of the device 400. The sensor component 414 may include proximity sensors configured to detect the presence of nearby objects when there is no physical contact. The sensor component 414 may also include optical sensors, such as CMOS or CCD image sensors, for use in imaging applications. In some embodiments, the sensor component 414 may also include acceleration sensors, gyroscopes, magnetic sensors, pressure sensors, or temperature sensors.

[0267] The communication component 416 is configured to facilitate wired or wireless communication between device 400 and other devices. Device 400 can access wireless networks based on communication standards such as WiFi, 2G or 4G, or a combination thereof. In an exemplary embodiment, the communication component 416 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 416 further includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth® (BT) technology, and other technologies.

[0268] In exemplary embodiments, the device 400 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing units (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0269] In exemplary embodiments, a non-temporary computer-readable storage medium containing instructions is also provided, such as a memory 404 containing instructions, the instructions being executable by the processor 420 of device 400 to accomplish the method. For example, the non-temporary computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

[0270] Figure 9 is a schematic diagram of a communication device according to an exemplary embodiment. For example, device 500 may be provided as a base station or a server. Referring to Figure 9, device 500 includes a processing component 522 further comprising one or more processors, and memory resources represented by memory 532 for storing instructions, such as applications, that can be executed by the processing component 522. The application program stored in memory 532 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processing component 522 is configured to execute instructions for performing the method described above.

[0271] Device 500 may also include a power supply component 526 configured to perform power management for device 500, a wired or wireless network interface 550 configured to connect device 500 to a network, and an input / output (I / O) interface 558. Device 500 can be operated by an operating system stored in memory 532, such as Windows Server®, Mac OS X®, Unix®, Linux®, or FreeBSD®.

[0272] This disclosure provides a method for restricting the CMR configuration when the terminal does not support dynamic selection of STRP and CJT during PDSCH CJT transmission, as well as a method for selecting and restricting the number of NZP CSI-RS, thereby improving feasibility based on CJT communication.

[0273] Furthermore, it should be understood that “plural” as used in this disclosure refers to two or more, and the same applies to other quantifiers. The term “and / or” indicates a relation between related objects; for example, A and / or B indicates that there may be three types of relationships: A existing alone, A and B existing together, or B existing alone. The letter “ / ” generally indicates that the preceding and following related objects are in an “or” relationship. It should be further understood that in this disclosure, the singular forms of “one kind,” “the said,” and “the said” are intended to include the plural form unless the context clearly indicates otherwise.

[0274] Terms such as "first" and "second" may be used to describe various types of information, but it should be understood that this information should not be limited to these terms. These terms are used only to distinguish information of the same kind from one another and do not indicate an order or importance of decisions. In fact, expressions such as "first" and "second" can be used interchangeably. For example, without departing from the scope of this disclosure, the first information can also be called the second information, and similarly, the second information can also be called the first information.

[0275] The meanings of terms such as “respond” and “if” as used in this disclosure depend on the context and actual usage. For example, the term “respond” as used herein may be interpreted as “when…” or “in the case of…” or “if” or “hypothetically.”

[0276] Although the operations in embodiments of this disclosure are described in the order of decisions in the drawings, it should be understood that these operations should not be understood as requiring that they be performed in the order of decisions shown, or in a serial order, or as requiring that all operations shown be performed to obtain the desired result. In decision-making situations, multitasking and parallel processing may be advantageous.

[0277] Other embodiments of the Disclosure will be apparent to those skilled in the art from the description and consideration of the embodiments disclosed herein. The Disclosure is intended to cover any variations, uses, or adaptations of the Disclosure, which, in accordance with the general principles of the Disclosure, include prior art or common means in the art not disclosed herein.

[0278] This disclosure is not limited to the exact structures described above and illustrated in the accompanying drawings, and it should be understood that various modifications and changes may be made without departing from its scope. The scope of this disclosure is limited only by the attached claims.

Claims

1. A communication method, wherein the method is performed by a terminal. A step of receiving first information, the first information being used to determine that the CMR (channel measurement resource) contains N NZP CSI-RS (non-zero power channel state information reference signal) resources, wherein N is a positive integer, If N is greater than 1, the step of determining whether the terminal selects and provides feedback on M NZP CSI-RS resources from the N NZP CSI-RS resources, wherein M is less than or equal to N. A communication method characterized by the following features.

2. The first information is also used to determine at least one first beam count combination, where each beam count in the first beam count combination is associated with one NZP CSI-RS resource. The communication method according to feature 1.

3. The first information is also used to determine at least one first parameter combination, the first parameter combination being the frequency domain basis combination parameter P V and a non-zero coefficient parameter β The communication method according to feature 2.

4. The second beam number combination and P V If the combination with β is not supported, the terminal decides not to select or provide feedback on M NZP CSI-RS resources from the N NZP CSI-RS resources, and the second beam number combination is a subset of the first beam number combination. The communication method according to feature 2 or 3.

5. The second beam number combination and the P V If the combination with β is not supported, The protocol is the second beam number combination and the P V , in cases where it is specified that the combination with β is not supported, The terminal has the second beam number combination and the P V , in cases where the combination with β is not supported, The terminal has the second beam number combination and the P V , supports combination with β, and the terminal does not support dynamic switching between the designated method and the S-TRP (single transmission and receiving point) communication method, and the designated method employs M-TRP (multiple transmission and receiving point) communication, and the second beam count combination includes at least one of the following: The communication method according to feature 4.

6. The third beam number combination and P V If the combination with β is supported, the terminal decides to select and feed back M NZP CSI-RS resources from the N NZP CSI-RS resources, and the third beam number combination is a subset of the first beam number combination. The communication method according to feature 2 or 3.

7. The third beam number combination and the P V If the combination with β is supported, The third beam number combination supported by the protocol and the P V , when defining the combination with the β, The terminal has the third beam number combination and the P V The case includes at least one of the following: , a case that supports a combination with β, and The communication method described in feature 6.

8. The aforementioned designation method is CJT (coherent joint transmission). The communication method according to feature 5.

9. The aforementioned CJT is A single CMR configured by a network device contains L NZP CSI-RS resources, where L is a positive integer, and each NZP CSI-RS resource corresponds to one TRP or one TRP group. The space domain basis vector is independently fed back to each NZP CSI-RS resource in multiple NZP CSI-RS resources, The frequency domain basis vector is independently fed back to each NZP CSI-RS resource in multiple NZP CSI-RS resources, This includes at least one of the following: feeding back the same frequency domain basis vector to each NZP CSI-RS resource in multiple NZP CSI-RS resources. The communication method according to feature 8.

10. The first information is used to instruct the terminal not to select or provide feedback on M NZP CSI-RS resources from the N NZP CSI-RS resources, or The first information described above is used to instruct the terminal to select and provide feedback on M NZP CSI-RS resources from the N NZP CSI-RS resources. The communication method according to any one of claims 1 to 9.

11. The aforementioned method, The process further includes the step of transmitting a second piece of information, The second piece of information mentioned above is: The ability of the aforementioned terminal to support dynamic switching between the specified method and the S-TRP communication method, The aforementioned terminal does not support a second beam number combination, and P V , in combination with β, The third beam number combination supported by the terminal, and the P V , a combination with β, and at least one of the above The communication method according to feature 1.

12. A communication method, wherein the method is performed by a network device. The step of transmitting first information, the first information being used to determine that a CMR (channel measurement resource) contains N NZP CSI-RS (non-zero power channel state information reference signal) resources, where N is a positive integer. A communication method characterized by the following features.

13. The first information is also used to determine at least one first beam count combination, where each beam count in the first beam count combination is associated with one NZP CSI-RS resource. The communication method according to feature 12.

14. The first information is also used to determine at least one first parameter combination, the first parameter combination being the frequency domain basis combination parameter P V and a non-zero coefficient parameter β The communication method according to feature 13.

15. The first information described above is used to instruct the terminal not to select or provide feedback on M NZP CSI-RS resources from the N NZP CSI-RS resources, where M is less than or equal to N, or The first information described above is used to instruct the terminal to select and provide feedback on M NZP CSI-RS resources from the N NZP CSI-RS resources. The communication method according to any one of claims 12 to 14.

16. The aforementioned method, The process further includes the step of receiving a second piece of information, The second piece of information mentioned above is: The ability of the terminal to support dynamic switching between the specified method and the S-TRP communication method, The aforementioned terminal does not support a second beam number combination, and P V , in combination with β, The third beam number combination supported by the terminal, and the P V , a combination with β, and at least one of the above The communication method according to any one of claims 12 to 15.

17. The terminal has the second beam number combination and the P V If the combination with β is not supported, The protocol is the second beam number combination and the P V , in cases where it is specified that the combination with β is not supported, The aforementioned terminal has a second beam number combination and the P V , in cases where the combination with β is not supported, The aforementioned terminal has a second beam number combination and the P V , supporting a combination with β, and the terminal does not support dynamic switching between the designated method and the S-TRP (single transmission / reception point) communication method, wherein the designated method employs M-TRP (multiple transmission / reception point) communication, and the second beam count combination includes at least one of the following: The communication method described in feature 16.

18. The terminal has the third beam number combination and the P V If the combination with β is supported, The protocol supports the third beam number combination, and P V , when specifying a combination with the aforementioned β, The terminal has the third beam number combination and the P V The case includes at least one of the following: , a case that supports a combination with β, and The communication method described in feature 16.

19. The aforementioned designation method is CJT (coherent joint transmission). The communication method according to feature 17.

20. The aforementioned CJT is The CMR configured by the network device includes L NZP CSI-RS resources, where L is a positive integer, and each NZP CSI-RS resource corresponds to one TRP or one TRP group. The process involves independently feeding back the pace domain basis vector to each NZP CSI-RS resource in multiple NZP CSI-RS resources, The frequency domain basis vector is independently fed back to each NZP CSI-RS resource in multiple NZP CSI-RS resources, This includes at least one of the following: feeding back the same frequency domain basis vector to each NZP CSI-RS resource in multiple NZP CSI-RS resources. The communication method according to feature 19.

21. A communication device, A receiving module configured to receive first information, the first information being used to determine that a CMR (channel measurement resource) contains N NZP CSI-RS (non-zero power channel state information reference signal) resources, where N is a positive integer, and the receiving module, A processing module configured to determine whether the terminal selects and provides feedback on M NZP CSI-RS resources from the N NZP CSI-RS resources when N is greater than 1, wherein M is less than or equal to N, and includes a processing module. A communication device characterized by the following features.

22. A communication device, A transmitting module configured to transmit first information, the first information being used to determine that a CMR (channel measurement resource) contains N NZP CSI-RS (non-zero power channel state information reference signal) resources, where N is a positive integer, includes a transmitting module. A communication device characterized by the following features.

23. A communication device, Processor and It includes memory for storing instructions that can be executed by the processor, The processor is configured to carry out the method described in any one of claims 1 to 11. A communication device characterized by the following features.

24. A communication device, Processor and It includes memory for storing instructions that can be executed by the processor, The processor is configured to carry out the method described in any one of claims 12 to 20. A communication device characterized by the following features.

25. A non-temporary computer-readable storage medium, wherein when an instruction in the storage medium is executed by the processor of a terminal, the terminal can perform the method according to any one of claims 1 to 11. A non-temporary computer-readable storage medium characterized by the following features.

26. A non-temporary computer-readable recording medium, wherein when instructions on the recording medium are executed by a processor of a network device, the network device enables the network device to perform the method according to any one of claims 12 to 20. A non-temporary computer-readable storage medium characterized by the following features.

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