A communication method, apparatus, device, and storage medium

Abstract

The present disclosure relates to a communication method, device, equipment and storage medium, comprising: receiving first information, the first information being used to determine that N non-zero power channel state information reference signal (NZP CSI-RS) resources are included in a channel measurement resource (CMR), wherein N is a positive integer; in the case that N is greater than 1, determining whether a terminal selects and feeds back M NZP CSI-RS resources from the N NZP CSI-RS resources, wherein M is less than or equal to N. Through the first information, it is determined whether M NZP CSI-RS resources are selected and fed back from the N NZP CSI-RS resources, thereby improving the feasibility of coherent joint transmission communication.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a communication method, apparatus, device and storage medium. Background Technology

[0002] Currently, a scheme based on coherent joint transmission (CJT) for the physical downlink shared channel (PDSCH) is under discussion. For a single terminal, up to four transmission and receiving points (TRPs) can simultaneously provide services to that terminal. Summary of the Invention

[0003] To overcome the problems existing in related technologies, this disclosure provides a communication method, apparatus, device and storage medium.

[0004] According to a first aspect of the present disclosure, a communication method is provided, the method being executed by a terminal, comprising: receiving first information, the first information being used to determine that the channel measurement resources (CMR) include N non-zero power channel state information reference signals (NZP CSI-RS) resources, wherein 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 N NZP CSI-RS resources, wherein M is less than or equal to N.

[0005] In some implementations, the first information is also used to determine at least one first beam number combination, wherein the number of each beam in the first beam number combination is associated with an NZP CSI-RS resource.

[0006] In some implementations, the first information is further used to determine at least one first parameter combination, wherein the first parameter combination includes frequency domain basis vector combination parameters P. v The non-zero coefficient parameter β.

[0007] In some implementations, the second beam number combination is combined with P v If the combination of β is not supported, it is determined that the terminal does not select or feed back 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.

[0008] In some implementations, the second beam number combination is related to P v The combination of β and P is not supported in cases including at least one of the following: the protocol specifies that the combination of the second beam number and P is not supported. vThe combination of β and β; the terminal does not support the second beam number combination with P. v Combinations of β and β; the terminal supports second beam number combinations with P. v The combination of β and β, and the terminal does not support dynamic switching between the specified scheme and the single transmit / receive point S-TRP communication scheme. The specified scheme adopts multi-transmit / receive point M-TRP communication, and the second beam number combination includes one beam number.

[0009] In some implementations, the third beam number combination and P v When the combination of β is supported, the terminal selects and feeds 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.

[0010] In some implementations, the third beam number combination is related to P v The combination of β and P is supported in cases where at least one of the following is true: the protocol specifies that the third beam number combination is supported in combination with P. v The combination of β and β; the combination of the third beam number supported by the terminal and P v Combinations of β and β.

[0011] In some implementations, the scheme is designated as Coherent Joint Transmission (CJT).

[0012] In some implementations, CJT includes at least one of the following: a CMR configured by the 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; independently feeding back spatial basis vectors for each of the multiple NZP CSI-RS resources; independently feeding back frequency domain basis vectors for each of the multiple NZP CSI-RS resources; and feeding back the same frequency domain basis vectors for each of the multiple NZP CSI-RS resources.

[0013] In some implementations, the first information is used to instruct the terminal not to select or return M NZP CSI-RS resources from N NZP CSI-RS resources; or, the first information is used to instruct the terminal to select and return M NZP CSI-RS resources from N NZP CSI-RS resources.

[0014] In some embodiments, the method further includes: sending second information; the second information includes at least one of the following: whether the terminal supports the ability to dynamically switch between a specified scheme and an S-TRP communication scheme; whether the terminal does not support a second beam number combination and P v The combination of β and β; the combination of the third beam number supported by the terminal and P vCombinations of β and β.

[0015] According to a second aspect of the present disclosure, a communication method is provided, the method being executed by a network device, comprising: sending first information, the first information being used to determine that a channel measurement resource (CMR) includes N non-zero power channel state information reference signals (NZP CSI-RS) resources, wherein N is a positive integer.

[0016] In some implementations, the first information is also used to determine at least one first beam number combination, wherein the number of each beam in the first beam number combination is associated with an NZP CSI-RS resource.

[0017] In some implementations, the first information is further used to determine at least one first parameter combination, wherein the first parameter combination includes frequency domain basis vector combination parameters P. v The non-zero coefficient parameter β.

[0018] In some implementations, the first information is used to instruct the terminal not to select or return M NZP CSI-RS resources from N NZP CSI-RS resources; or, the first information is used to instruct the terminal to select and return M NZP CSI-RS resources from N NZP CSI-RS resources.

[0019] In some embodiments, the method further includes: receiving second information; the second information includes at least one of the following: whether the terminal supports the ability to dynamically switch between a specified scheme and an S-TRP communication scheme; a second beam number combination that the terminal does not support and P v The combination of β and β; the combination of the third beam number supported by the terminal and P v Combinations of β and β.

[0020] In some implementations, the second beam number combination is related to P v The combination of β and P is not supported by the terminal in the following cases: the protocol specifies that it does not support the combination of the second beam number and P. v The combination of β and β; the terminal does not support the second beam number combination with P. v Combinations of β and β; the terminal supports second beam number combinations with P. v The combination of β and β, and the terminal does not support dynamic switching between the specified scheme and the single transmit / receive point S-TRP communication scheme. The specified scheme adopts multi-transmit / receive point M-TRP communication, and the second beam number combination includes one beam number.

[0021] In some implementations, the third beam number combination is related to P v The combination of β and P is supported by the terminal in the following cases: the third beam number combination supported by the protocol and P. v The combination of β and β; the combination of the third beam number supported by the terminal and Pv Combinations of β and β.

[0022] In some implementations, the scheme is designated as Coherent Joint Transmission (CJT).

[0023] In some implementations, CJT includes at least one of the following: a CMR configured by the 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; independently feeding back spatial basis vectors for each of the multiple NZP CSI-RS resources; independently feeding back frequency domain basis vectors for each of the multiple NZP CSI-RS resources; and feeding back the same frequency domain basis vectors for each of the multiple NZP CSI-RS resources.

[0024] According to a third aspect of the present disclosure, a communication apparatus is provided, the apparatus comprising: a receiving module, configured to receive first information, the first information being configured to determine that a CMR includes N NZP CSI-RS resources, wherein N is a positive integer; and a processing module, configured to determine, if N is greater than 1, whether a terminal selects and feeds back M NZP CSI-RS resources from the N NZP CSI-RS resources, wherein M is less than or equal to N.

[0025] In some implementations, the first information is also used to determine at least one first beam number combination, wherein the number of each beam in the first beam number combination is associated with an NZP CSI-RS resource.

[0026] In some implementations, the first information is further used to determine at least one first parameter combination, wherein the first parameter combination includes frequency domain basis vector combination parameters P. v The non-zero coefficient parameter β.

[0027] In some implementations, the processing module is further configured to: combine the second beam number with P v If the combination of β is not supported, it is determined that the terminal does not select or feed back 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.

[0028] In some implementations, the second beam number combination is related to P v The combination of β and P is not supported in cases including at least one of the following: the protocol specifies that the combination of the second beam number and P is not supported. v The combination of β and β; the terminal does not support the second beam number combination with P. v Combinations of β and β; the terminal supports second beam number combinations with P. vThe combination of β and β, and the terminal does not support dynamic switching between the specified scheme and the single transmit / receive point S-TRP communication scheme. The specified scheme adopts multi-transmit / receive point M-TRP communication, and the second beam number combination includes one beam number.

[0029] In some implementations, the processing module is also used to: combine the third beam number with P v When the combination of β is supported, the terminal selects and feeds 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.

[0030] In some implementations, the third beam number combination is related to P v The combination of β and P is supported in cases where at least one of the following is true: the protocol specifies that the third beam number combination is supported in combination with P. v The combination of β and β; the combination of the third beam number supported by the terminal and P v Combinations of β and β.

[0031] In some implementations, the scheme is designated as Coherent Joint Transmission (CJT).

[0032] In some implementations, CJT includes at least one of the following: a CMR configured by the 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; independently feeding back spatial basis vectors for each of the multiple NZP CSI-RS resources; independently feeding back frequency domain basis vectors for each of the multiple NZP CSI-RS resources; and feeding back the same frequency domain basis vectors for each of the multiple NZP CSI-RS resources.

[0033] In some implementations, the first information is used to instruct the terminal not to select or return M NZP CSI-RS resources from N NZP CSI-RS resources; or, the first information is used to instruct the terminal to select and return M NZP CSI-RS resources from N NZP CSI-RS resources.

[0034] In some embodiments, the apparatus further includes: a transmitting module for transmitting second information; the second information includes at least one of the following: whether the terminal supports the ability to dynamically switch between a specified scheme and an S-TRP communication scheme; a second beam number combination that the terminal does not support and P v The combination of β and β; the combination of the third beam number supported by the terminal and P v Combinations of β and β.

[0035] According to a fourth aspect of the present disclosure, a communication apparatus is provided, the apparatus comprising: a transmitting module configured to transmit first information, the first information being configured to determine that a CMR includes N NZP CSI-RS resources, wherein N is a positive integer.

[0036] In some implementations, the first information is also used to determine at least one first beam number combination, wherein the number of each beam in the first beam number combination is associated with an NZP CSI-RS resource.

[0037] In some implementations, the first information is further used to determine at least one first parameter combination, wherein the first parameter combination includes frequency domain basis vector combination parameters P. v The non-zero coefficient parameter β.

[0038] In some implementations, the first information is used to instruct the terminal not to select or return M NZP CSI-RS resources from N NZP CSI-RS resources; or, the first information is used to instruct the terminal to select and return M NZP CSI-RS resources from N NZP CSI-RS resources.

[0039] In some embodiments, the apparatus further includes: a receiving module for receiving second information; the second information includes at least one of the following: whether the terminal supports the ability to dynamically switch between a specified scheme and an S-TRP communication scheme; and whether the terminal does not support a second beam number combination with P. v The combination of β and β; the combination of the third beam number supported by the terminal and P v Combinations of β and β.

[0040] In some implementations, the second beam number combination is related to P v The combination of β and P is not supported by the terminal in the following cases: the protocol specifies that it does not support the combination of the second beam number and P. v The combination of β and β; the terminal does not support the second beam number combination with P. v Combinations of β and β; the terminal supports second beam number combinations with P. v The combination of β and β, and the terminal does not support dynamic switching between the specified scheme and the single transmit / receive point S-TRP communication scheme. The specified scheme adopts multi-transmit / receive point M-TRP communication, and the second beam number combination includes one beam number.

[0041] In some implementations, the third beam number combination is related to P v The combination of β and P is supported by the terminal in the following cases: the third beam number combination supported by the protocol and P. v The combination of β and β; the combination of the third beam number supported by the terminal and P v Combinations of β and β.

[0042] In some implementations, the scheme is designated as Coherent Joint Transmission (CJT).

[0043] In some implementations, CJT includes at least one of the following: a CMR configured by the 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; independently feeding back spatial basis vectors for each of the multiple NZP CSI-RS resources; independently feeding back frequency domain basis vectors for each of the multiple NZP CSI-RS resources; and feeding back the same frequency domain basis vectors for each of the multiple NZP CSI-RS resources.

[0044] According to a fifth aspect of the present disclosure, a communication device is provided, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: perform the first aspect and any one of the methods in the first aspect.

[0045] According to a sixth aspect of the present disclosure, a communication device is provided, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: perform the second aspect and any one of the methods in the second aspect.

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

[0047] According to an eighth aspect of the present disclosure, a non-transitory computer-readable storage medium is provided, which, when instructions in the storage medium are executed by a processor of a network device, enables the network device to perform the second aspect and any one of the methods in the second aspect.

[0048] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: determining whether to select and return M NZP CSI-RS resources from N NZP CSI-RS resources through first information improves the feasibility of CJT-based communication.

[0049] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0050] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0051] Figure 1 This is a schematic diagram of a wireless communication system according to an exemplary embodiment.

[0052] Figure 2 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0053] Figure 3 This is a flowchart illustrating another communication method according to an exemplary embodiment.

[0054] Figure 4 This is a flowchart illustrating yet another communication method according to an exemplary embodiment.

[0055] Figure 5 This is a flowchart illustrating another communication method according to an exemplary embodiment.

[0056] Figure 6 This is a schematic diagram of a communication device according to an exemplary embodiment.

[0057] Figure 7 This is a schematic diagram of another communication device according to an exemplary embodiment.

[0058] Figure 8 This is a schematic diagram of a communication device according to an exemplary embodiment.

[0059] Figure 9 This is a schematic diagram of another communication device according to an exemplary embodiment. Detailed Implementation

[0060] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure.

[0061] The communication methods disclosed herein can be applied to Figure 1 The wireless communication system 100 shown may include network device 110 and terminal 120. It is understood that... Figure 1 The wireless communication system shown is for illustrative purposes only. A wireless communication system may also include other network devices, such as core network equipment, wireless relay equipment, and wireless backhaul equipment. Figure 1 Not shown in the diagram. This disclosure does not limit the number of network devices and terminals included in the wireless communication system.

[0062] It is further understood that the wireless communication system of this disclosure is a network providing wireless communication functionality. The wireless communication system can employ different 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-frequency division multiple access (SC-FDMA), and carrier sense multiple access with collision avoidance. Based on factors such as capacity, speed, and latency, networks can be categorized as 2G, 3G, 4G, or future evolution networks, such as the 5th generation wireless communication system (5G) network, which can also be referred to as NR. For ease of description, this disclosure may sometimes simply refer to the wireless communication network as a network.

[0063] Furthermore, the network device 110 involved in this disclosure can also be referred to as a wireless access network device. This wireless access network device can be: a base station, an evolved Node B (eNB), a home base station, an access point (AP) in a wireless fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP), or a TRP, etc. It can also be a gNB in ​​an NR system, or it can be a component or part of a base station. When it is a vehicle-to-everything (V2X) communication system, the network device can also be an in-vehicle device. It should be understood that the specific technologies and specific device forms used in the embodiments of this disclosure are not limited.

[0064] Furthermore, the terminal 120 involved in this disclosure can also be referred to as a terminal device, user equipment (UE), mobile station (MS), mobile terminal (MT), etc., which is a device that provides voice and / or data connectivity to a user. For example, the terminal can be a handheld device with wireless connectivity, an in-vehicle device, etc. Currently, some examples of terminals include: smartphones, pocket personal computers (PPCs), handheld computers, personal digital assistants (PDAs), laptops, tablets, wearable devices, or in-vehicle devices, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device can also be an in-vehicle device. It should be understood that the embodiments of this disclosure do not limit the specific technology or specific device form adopted by the terminal.

[0065] In this embodiment, network device 110 and terminal 120 can employ any feasible wireless communication technology to transmit data to each other. The transmission channel corresponding to network device 110 sending data to terminal 120 is called the downlink channel (DL), and the transmission channel corresponding to terminal 120 sending data to network device 110 is called the uplink channel (UL). It is understood that the network device involved in this embodiment can be a base station. Of course, the network device can also be any other possible network device, and the terminal can be any possible terminal; this disclosure does not impose any limitations.

[0066] Currently, a CJT-based solution for PDSCH is under discussion. For a single terminal, up to four TRPs can simultaneously provide services to that terminal. The specific number of TRPs used for PDSCH and / or the corresponding demodulation reference signal (DMRS) communication can be determined by the network equipment or the terminal.

[0067] The network equipment is determined in the following way:

[0068] The network device configures a channel measurement resource (CMR) for the terminal. If a CMR only includes a non-zero power channel state information reference signal (NZP CSI-RS) resource, since one NZP CSI-RS resource corresponds to one TRP or one TRP group, then the terminal performs PDSCH and / or DMRS communication corresponding to the PDSCH based on one TRP or one TRP group. The terminal does not need to select the NZP CSI-RS resource. The terminal can directly provide channel state information (CSI) feedback for this NZP CSI-RS resource. This includes spatial domain basis (SD) selection indication, frequency domain basis (FD) selection indication, non-zero coefficient reporting, rank reporting, etc.

[0069] The network device configures a CMR for the terminal. If a CMR includes K NZP CSI-RS resources, where K is a positive integer greater than 1, and the network device indicates that the terminal does not need to select from the K NZP CSI-RS resources, then the terminal can directly perform CSI feedback for the K NZP CSI-RS resources. The network device then performs PDSCH and / or the corresponding DMRS communication with the terminal based on these K NZP CSI-RS resources.

[0070] The terminal is determined in the following way:

[0071] The network device configures a CMR for the terminal. If a CMR includes K NZP CSI-RS resources, and the network device does not instruct the terminal not to further select from the K NZP CSI-RS resources, then 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 inform the network device which X NZP CSI-RS resources are selected, for example, using Y bits. Each NZP CSI-RS resource corresponds to 1 bit. In one embodiment, a bit value of 1 indicates that the NZP CSI-RS resource corresponding to that bit is selected, and a bit value of 0 indicates that the NZP CSI-RS resource corresponding to that bit is not selected. In other embodiments, a bit value of 0 indicates that the NZP CSI-RS resource corresponding to that bit is selected, and a bit value of 1 indicates that the NZP CSI-RS resource corresponding to that bit is not selected. Of course, the bit value can also be any other value to indicate that the NZP CSI-RS resource corresponding to that bit is selected, and / or that the NZP CSI-RS resource corresponding to that bit is not selected; this disclosure does not limit this. In this case, the terminal reports CSI feedback for the X NZP CSI-RS resources.

[0072] However, there is currently no consensus on how terminals should select NZP CSI-RS resource feedback CSI.

[0073] Therefore, this disclosure provides a communication method, apparatus, device, and storage medium that determines whether to select and feed back M NZP CSI-RS resources from N NZP CSI-RS resources through first information, thereby improving the feasibility of CJT-based communication.

[0074] Figure 2 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 2 As shown, the method is executed by the terminal and may include the following steps:

[0075] In step S11, the first information is received.

[0076] In some embodiments, the terminal receives first information. This first information can be used to determine that the CMR includes N NZPCSI-RS resources, where N is a positive integer.

[0077] For example, the terminal receives first information sent by the network device. This first information is used to determine that the CMR includes one NZPCSI-RS resource.

[0078] For example, the terminal receives first information sent by the network device. This first information is used to determine that the CMR includes multiple NZP CSI-RS resources.

[0079] In step S12, if N is greater than 1, it is determined whether the terminal selects and returns M NZP CSI-RS resources from N NZP CSI-RS resources.

[0080] In some embodiments, when N is greater than 1, the terminal can determine whether to select and return M NZP CSI-RS resources from N NZP CSI-RS resources. Here, M is less than or equal to N.

[0081] It is clear that the case where N is greater than 1 means that the CMR includes multiple NZP CSI-RS resources.

[0082] For example, when a CMR includes multiple NZP CSI-RS resources, the terminal can determine whether to select and return M NZP CSI-RS resources based on the first information.

[0083] For example, the first information indicates whether the terminal selects and returns M NZP CSI-RS resources from N NZP CSI-RS resources.

[0084] For example, upon receiving the first information, the terminal determines, based on preset rules, whether to select and return M NZP CSI-RS resources from N NZP CSI-RS resources. It is clear that the preset rules predefine whether the terminal selects and returns M NZP CSI-RS resources from N N ZZP CSI-RS resources.

[0085] This disclosure improves the feasibility of CJT-based communication by determining whether to select M NZP CSI-RS resources from N NZP CSI-RS resources and providing feedback through first information.

[0086] In the communication method provided in this embodiment, the first information is further used to determine at least one first beam number combination, wherein the number of each beam in the first beam number combination is associated with an NZP CSI-RS resource.

[0087] In some embodiments, the first information can also be used to determine at least one first beam number combination. It will be understood that the beam number combination can be an SD basis number combination. The first beam number combination includes one or more beam numbers. Each beam number in the first beam number combination can be associated with an NZP CSI-RS resource.

[0088] For example, each beam in the first beam combination can be associated with one of the N NZP CSI-RS resources. Of course, different beam numbers 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 in the beam combination corresponds to one TRP or one TRP group. Therefore, different beam numbers will be associated with different NZP CSI-RS resources.

[0089] In some embodiments, a combination configuration table of beam number combination and first parameter combination is provided. As shown in Table 1,

[0090]

[0091] Table 1

[0092] Here, "w / restriction" means that only a rank of 2 can be supported at most. "N / A" can be understood as not applicable.

[0093] For example, N in the first column of Table 1 TRP This refers to the number of NZP CSI-RS resources included in a CMR configured on a network device. In other words, it represents the number of TRPs configured on the network device. The second column in Table 1 expresses the beam number combinations. It's clear that the beam number combinations in the second column include the first beam number combination. It can be seen that when N... TRP At different times, the corresponding beam number combination is also different. For example, when N TRP When the value is 1, each beam number combination only needs to include the beam number corresponding to one TRP. Of course, this beam number can be the target beam number determined from a larger pool of beams. Assume this beam number is A, and the total number of beams is N1*N2. Then, beam number 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. It is clear that the total number of beams can also be configured by the network device; this disclosure does not limit this. When N... TRP When the number is greater than 1, the number of beams included in each beam combination is the same as the number of TRPs. That is, each beam corresponds to one TRP, or it can be considered that each beam corresponds to one NZP CSI-RS resource in one CMR.

[0094] It is clear that "x" in Table 1 indicates the combination that is supported by the protocol. For example, when the number of TRPs is 1, and the beam number combination of that TRP is 2, {P vThe value of} can only be {1 / 4, 1 / 4, 1 / 8, 1 / 8}, and β can be 1 / 2 or 1 / 4.

[0095] It is understood that each element in Table 1 exists independently. These elements are listed in the same table as an example, but this does not mean that all elements in the table must exist simultaneously as shown in the table. The value of each element is independent of the values ​​of any other elements in Table 1. Therefore, those skilled in the art will understand that the value of each element in Table 1 is an independent embodiment.

[0096] The first information disclosed herein can also determine the beam number combination so as to determine whether to select and feed back M NZP CSI-RS resources from N NZPCSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0097] In the communication method provided in this embodiment, the first information is further used to determine at least one first parameter combination, wherein the first parameter combination includes frequency domain basis vector combination parameters P. v The non-zero coefficient parameter β.

[0098] In some embodiments, the first information can also be used to determine at least one first parameter combination. The first parameter combination includes frequency domain basis vector combination parameters P. v The non-zero coefficient parameter β.

[0099] Among them, at least one combination of first parameters may correspond to a combination of first beam numbers.

[0100] For example, as shown in the second row of Table 1, the frequency domain basis vector combination parameter P v It can include 4 values, that is, 4 P values. v This means the maximum rank is 4. With a rank of 4, there are 4 layers, each corresponding to a P. v P on different layers v This is used to determine the number of frequency domain basis vectors to be selected on the corresponding layer. The number of frequency domain basis vectors to be selected can be calculated by multiplying the total number of frequency domain basis vectors by P. v Sure.

[0101] For example, a larger β indicates more non-zero coefficients. The terminal needs to report the specific value of each non-zero coefficient, which increases signaling overhead. In this case, network devices can obtain more information, thus improving the performance of communication between PDSCH and / or the corresponding DMRS.

[0102] The first information disclosed herein can also determine a first parameter combination so as to determine whether to select and feed back M NZP CSI-RS resources from N NZPCSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0103] In the communication method provided in this embodiment of the present disclosure, the second beam number combination and P v If the combination of β is not supported, it is determined that the terminal does not select or feed back 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.

[0104] In some embodiments, in the second beam number combination and P v If the combination of β and β is not supported, the terminal can determine not to select or return 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.

[0105] For example, in the second beam number combination with P v If the combination of β and β is not supported, the terminal, based on the first information, can determine whether to select or return M NZP CSI-RS resources from the N NZP CSI-RS resources. The second beam number combination is a subset of the first beam number combination.

[0106] For example, the second beam combination is one or more beam combinations corresponding to M NZP CSI-RS resources.

[0107] For example, in the second beam number combination with P v If the combination of β and β is not supported, the terminal, based on the first information, can determine that it will not select M NZP CSI-RS resources from the N N NZP CSI-RS resources. It is clear that in this example, since the terminal did not select M NZP CSI-RS resources, it will not necessarily provide information on M NZP CSI-RS resources.

[0108] For example, in the second beam number combination and P v If the combination of β and β is not supported, the terminal, based on the first information, can determine that it will not return M NZP CSI-RS resources from the N NZP CSI-RS resources. It can be understood that in this example, the terminal could have selected M NZP CSI-RS resources but not returned any of them. Alternatively, the terminal could have not selected M NZP CSI-RS resources and therefore not returned any of them.

[0109] It is clear that in the examples above, the terminal did not provide M NZP CSI-RS resources. Therefore, the network device will not perform PDSCH and / or the corresponding DMRS communication based on the M NZP CSI-RS resources. The network device will perform PDSCH and / or the corresponding DMRS communication based on the N NZP CSI-RS resources. This situation can also be considered as the terminal not selecting M NZP CSI-RS resources.

[0110] This disclosure provides a scenario where the terminal does not select or return M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0111] In the communication method provided in this embodiment, the second beam number combination and P v The combination of β and P is not supported in cases including at least one of the following: the protocol specifies that the combination of the second beam number and P is not supported. v The combination of β and β; the terminal does not support the second beam number combination with P. v Combinations of β and β; the terminal supports second beam number combinations with P. v The combination of β and β, and the terminal does not support dynamic switching between the specified scheme and the single (S)TRP communication scheme, wherein the specified scheme adopts multiple (M)TRP communication, and the second beam number combination includes one beam number.

[0112] In some embodiments, the second beam number combination and P v The combination of β and P is not supported in the following cases: the protocol specifies that the combination of the second beam number and P is not supported. v Combinations of β and β.

[0113] For example, the protocol can specify the second beam number combination and P in advance. v If the combination of β and β is not supported, the terminal will be unable to select CSI feedback for the unsupported combination. Consequently, the terminal will also be unable to select the NZP CSI-RS resource corresponding to the second beam number combination.

[0114] Taking Table 1 as an example, combinations not marked with "x" in Table 1 can be considered as combinations not supported by the protocol. For the terminal, there is no need to select such combinations for CSI feedback. For the combinations marked with "x" in Table 1, if the second beam number combination configured by the network device matches P... vIn cases where the combination of β is “{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”, and “{4,4}、{1 / 2,1 / 2,1 / 2,1 / 2}、1 / 2”, the terminal does not need to select NZPCSI-RS resources.

[0115] It is clear that the second beam number combination mentioned above is related to P v The reason why the combination of β does not need to be selected is that if the terminal selects NZP CSI-RS resources, it is equivalent to selecting one TRP. However, in the above combinations, when the first parameter combination is the same, the beam number combination corresponding to TRP 1 is not supported by the protocol. Therefore, the terminal does not need to select NZP CSI-RS resources.

[0116] Of course, for the aforementioned cases where the terminal does not need to select NZP CSI-RS resources, this could be because the network device configures the terminal not to select them through certain information, or the terminal determines itself not to select them based on predetermined rules; this disclosure does not limit this.

[0117] In some embodiments, the second beam number combination and P v Cases where the combination of β and P is not supported include: the terminal does not support the second beam number combination and P. v Combinations of β and β.

[0118] For example, the terminal can determine the second beam number combination and P itself. v Combinations of β and P are not supported. For example, the terminal determines the second beam number combination with P based on any possible factors, such as its own measurement results, its own hardware support, and operator support. v The combination of β and β is not supported by the terminal. Therefore, the terminal will be unable to select CSI feedback for unsupported combinations. Correspondingly, the terminal will also be unable to select the NZP CSI-RS resource corresponding to the second beam number combination.

[0119] For example, the terminal can send an indication that it does not support a second beam number combination with P. v The terminal can also send information about the combination of β and P to inform network devices. For example, the terminal can also send information indicating the second beam number combination supported by the terminal, along with P. v The information of the combination of β is used to inform network devices, thereby implicitly indicating combinations that the terminal does not support.

[0120] Taking Table 1 as an example, among the combinations marked "x" in Table 1, the terminal can set any one or more combinations to be combinations not supported by the terminal. For the terminal, there is no need to select such combinations for CSI feedback. It can be assumed that the second beam number combination and P... v The combinations of β and β, such as "{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 not supported by the terminal. Therefore, when the network device configures the terminal with a TRP count of 3, the second beam number combination and P... v When the combination of β is "{4,4,4}, {1 / 4,1 / 4,1 / 8,1 / 8}, 1 / 4", the terminal cannot select NZP CSI-RS resources. This is because the protocol does not support combinations with two TRPs under the same first parameter combination. Furthermore, the terminal does not support combinations with one TRP under the same first parameter combination. Therefore, the terminal does not need to select NZP CSI-RS resources.

[0121] Of course, for the aforementioned cases where the terminal does not need to select NZP CSI-RS resources, this could be because the network device configures the terminal not to select them through certain information, or the terminal determines itself not to select them based on predetermined rules; this disclosure does not limit this.

[0122] In some embodiments, the second beam number combination and P v Cases where the combination of β and P is not supported include: the terminal supports the second beam number combination and P. v The combination of β and M-TRP, and the terminal's lack of support for dynamic switching between the specified scheme and the S-TRP communication scheme. The specified scheme uses M-TRP communication, and the second beam number combination includes one beam number.

[0123] For example, the terminal can support a second beam number combination with P v The combination of β and β. However, the terminal does not support dynamic switching between the specified scheme and the S-TRP communication scheme. The second beam number combination includes one beam number. Therefore, the terminal will not be able to select the supported second beam number combination and P. v Choose from combinations of β and β.

[0124] Taking Table 1 as an example, we can assume that the second beam number combination and P v The combinations of β and β are “{2}, {1 / 4, 1 / 4, 1 / 8, 1 / 8}, 1 / 4” and “{4}, {1 / 4, 1 / 4, 1 / 8, 1 / 8}, 1 / 4”, which are the combinations supported by the terminal. Simultaneously, the terminal also supports the second beam number combination and P. vThe combinations of β and β are "{4,4,4}, {1 / 4,1 / 4,1 / 8,1 / 8}, 1 / 4". However, the terminal does not support dynamic switching between the specified scheme and the S-TRP communication scheme. Therefore, when the network device configures the terminal with a specified scheme, such as CJT, and the network device is configured with a TRP number of 3, the second beam combination and P... v When the combination of 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, PDSCH and / or the corresponding DMRS communication based on the three NZPCSI-RS resources.

[0125] It should be noted that in this case, the network device can still be directly configured with a TRP number of 1, that is, directly configure the second beam number combination with P. v The combinations of β are "{2}, {1 / 4, 1 / 4, 1 / 8, 1 / 8}, 1 / 4" and "{4}, {1 / 4, 1 / 4, 1 / 8, 1 / 8}, 1 / 4". It can be understood that for combinations of "{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, 1 / 4}, 3 / 4", "{2, 2, 4, 4}, {1 / 4, 1 / 4, 1 / 8, 1 / 8}, 1 / 2", "{2, 2, 4, 4", The cases of {4}, {1 / 4,1 / 4,1 / 4,1 / 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 cases of {4,4,4}, {1 / 4,1 / 4,1 / 8,1 / 8}, 1 / 4, and will not be described in detail here.

[0126] Of course, in the above embodiments, the reason why the terminal does not select the supported combination is that although the protocol specifies that the combination with a TRP number of 1 is supported, and the terminal can also support this combination, the terminal does not support dynamic switching between the specified scheme and the S-TRP communication scheme. When the specified scheme uses M-TRP communication, the terminal cannot switch and must select multiple TRPs. Therefore, the terminal cannot select the combination with a TRP number of 1.

[0127] It's understandable that different terminal capabilities may lead to different supported CMR configurations. For example, some terminals can support dynamic switching between S-TRP and CJT communication schemes, while others do not. In such cases, CMR needs to be restricted.

[0128] This disclosure provides a scenario where the terminal does not select or return M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0129] In the communication method provided in this embodiment, the third beam number combination and P v When the combination of β is supported, the terminal selects and feeds back M NZP CSI-RS resources from N NZP CSI-RS resources based on the first information, wherein the third beam number combination is a subset of the first beam number combination.

[0130] In some embodiments, in the third beam number combination and P v When the combination of β and β is supported, the terminal, based on the first information, can determine and select M NZP CSI-RS resources from N NZP CSI-RS resources and return them. The third beam number combination is a subset of the first beam number combination.

[0131] For example, the third beam combination is one or more beam combinations corresponding to M NZP CSI-RS resources.

[0132] For example, in the third beam number combination and P v When the combination of β and β is supported, the terminal, based on the first information, can determine to select M NZP CSI-RS resources from N NZP CSI-RS resources. The terminal can also provide feedback on its selected M NZP CSI-RS resources.

[0133] It is clear that since the terminal selects and provides feedback on M NZP CSI-RS resources, the network device can perform PDSCH and / or DMRS communication corresponding to the PDSCH based on the M NZPCSI-RS resources.

[0134] This disclosure provides a scenario where a terminal selects and returns M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0135] In the communication method provided in this embodiment, the third beam number combination and P v The combination of β and P is supported in cases where at least one of the following is true: the protocol specifies that the third beam number combination is supported in combination with P. vThe combination of β and β; the combination of the third beam number supported by the terminal and P v Combinations of β and β.

[0136] In some embodiments, the third beam number combination and P v The combination of β and P is supported in cases where the protocol specifies the support for the third beam number combination. v Combinations of β and β.

[0137] For example, the protocol can specify the pre-defined combination of the third beam number and P. v Combinations of β and β are supported. The terminal can then select to provide CSI feedback for the supported combinations. Correspondingly, the terminal can also select the NZP CSI-RS resource corresponding to the third beam number combination.

[0138] Taking Table 1 as an example, for the third beam number combination and P v The combination of β is "{2,2,2,2}, {1 / 8,1 / 8,1 / 16,1 / 16}, 1 / 4". Since the protocol does not support combinations with the same first parameter and a TRP of 1, the terminal cannot select only one NZP CSI-RS resource from the four available resources. However, the terminal can select two or three NZP CSI-RS resources from the four available resources. Of course, if the terminal itself does not support combinations with a TRP of 2, it also cannot select only two NZP CSI-RS resources from the four available resources.

[0139] In some embodiments, the third beam number combination and P v The combination of β and P is supported in cases where the terminal supports the third beam number combination. v Combinations of β and β.

[0140] For example, the terminal can determine the third beam number combination and P itself. v Combinations of β and P are supported. For example, the terminal determines the third beam number combination with P based on any possible factors, such as its own measurement results, its own hardware support, and operator support. v The combination of β and β is supported by the terminal. The terminal can choose to provide CSI feedback for the supported combinations. Correspondingly, the terminal can also select the NZP CSI-RS resource corresponding to the third beam number combination.

[0141] It is clear that the terminal supports the third beam number combination and P v The combination of β must be a combination supported by the protocol.

[0142] This disclosure provides a scenario where a terminal selects and returns M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0143] In the communication method provided in this embodiment, the specified scheme is CJT.

[0144] In some embodiments, the PDSCH and / or the DMRS corresponding to the PDSCH are configured to communicate using a specified scheme, such as being configured to communicate using CJT.

[0145] CJT can represent the use of multiple TRPs for joint transmission.

[0146] This disclosure provides a scenario where a terminal selects and returns M NZP CSI-RS resources from N NZP CSI-RS resources for communication via CJT, thereby improving the feasibility of CJT-based communication.

[0147] In the communication method provided in this disclosure, CJT includes at least one of the following: a CMR configured by the 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; a spatial basis vector is independently fed back for each of the multiple NZP CSI-RS resources; a frequency domain basis vector is independently fed back for each of the multiple NZP CSI-RS resources; and the same frequency domain basis vector is fed back for each of the multiple NZP CSI-RS resources.

[0148] In some embodiments, the specified scheme includes a CMR configured by the network device comprising L NZP CSI-RS resources. Here, L is a positive integer, and one NZP CSI-RS resource corresponds to one TRP or one TRP group.

[0149] It's clear that when L is 1, it means that a CMR includes only one NZP CSI-RS resource, which corresponds to only one TRP or one TRP group. In this case, the specified scheme is S-TRP. When L is greater than 1, it means that a CMR includes only multiple NZP CSI-RS resources, which corresponds to multiple TRPs or multiple TRP groups. In this case, the specified scheme is M-TRP.

[0150] Of course, in other embodiments, the specified scheme includes at least one of a plurality of CMRs configured by the network device, which includes L NZP CSI-RS resources.

[0151] For example, L can typically be 1, 2, 3, or 4. That is, a CMR usually includes 1-4 NZP CSI-RS resources.

[0152] For example, when L equals 1, the terminal does not need to select an NZP CSI-RS resource. The network device can directly use the channel corresponding to one NZP CSI-RS resource to perform PDSCH and / or DMRS communication with the terminal. The terminal only needs to perform CSI feedback for that one NZP CSI-RS resource.

[0153] For example, when L is greater than 1, the network device is configured with corresponding restrictions. For instance, the network device might be configured to instruct the terminal not to make a selection. In this case, the terminal does not need to select one or more NZP CSI-RS resources from multiple NZP CSI-RS resources. The network device will use the channels corresponding to these L NZP CSI-RS resources to perform PDSCH and / or DMRS communication with the terminal. The terminal only needs to perform CSI feedback for these L NZP CSI-RS resources.

[0154] For example, when L is greater than 1, the network device has no configuration restrictions. The terminal can then select one or more NZP CSI-RS resources from the L available resources. For instance, the terminal can select K NZP CSI-RS resources from the L available resources. It's clear that K is a positive integer, and K is less than or equal to L. The terminal needs to send an indication message to the network device to inform it which K NZP CSI-RS resources the terminal has selected. The network device can then communicate with the terminal via PDSCH and / or DMRS 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.

[0155] In some embodiments, the specified scheme includes independent feedback spatial basis vectors for each NZP CSI-RS resource.

[0156] For example, the terminal independently feeds back a spatial basis vector for 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. Here, 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.

[0157] In some embodiments, the specified scheme includes independent feedback frequency domain basis vectors for each NZP CSI-RS resource.

[0158] For example, the terminal independently feeds back frequency domain basis vectors for 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.

[0159] In some embodiments, the specified scheme includes feeding back the same frequency domain basis vector for each NZP CSI-RS resource.

[0160] For example, the terminal selects the same frequency domain basis vectors for 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.

[0161] In some embodiments, the specified scheme includes configuring multiple TRPs on the network device. It is understood that each TRP corresponds to one NZP CSI-RS resource.

[0162] This disclosure provides several possible scenarios for the specified scheme. This allows for the determination, based on first information, of whether to select and provide feedback on M NZP CSI-RS resources from N NZPCSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0163] In the communication method provided in this embodiment, the first information is used to instruct the terminal not to select or return M NZP CSI-RS resources from N NZP CSI-RS resources; or, the first information is used to instruct the terminal to select and return M NZP CSI-RS resources from N NZP CSI-RS resources.

[0164] In some embodiments, the first information may be used to instruct the terminal not to select or return M NZP CSI-RS resources from N NZP CSI-RS resources.

[0165] For example, the first message sent by the network device may instruct the terminal not to select or report M NZP CSI-RS resources from N NZP CSI-RS resources. Based on the instruction of the first message, the terminal then determines not to select or report M NZP CSI-RS resources from N NZP CSI-RS resources.

[0166] In some embodiments, the first information may be used to instruct the terminal to select and return M NZP CSI-RS resources from N NZP CSI-RS resources.

[0167] For example, the first information sent by the network device may instruct the terminal to select and return M NZP CSI-RS resources from N NZP CSI-RS resources. Based on the instruction of the first information, the terminal then determines to select and return M NZP CSI-RS resources from the N N NZP CSI-RS resources.

[0168] The first information disclosed herein can directly instruct the terminal whether to select and return M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0169] In the communication method provided in the embodiments of this disclosure Figure 3 This is a flowchart illustrating another communication method according to an exemplary embodiment. For example... Figure 3 As shown, the method may also include the following steps:

[0170] In step S21, the second information is sent.

[0171] In some embodiments, the terminal may send a second message.

[0172] For example, a terminal can send a second message to a network device.

[0173] In some embodiments, the second information includes at least one of the following: whether the terminal supports the ability to dynamically switch between a specified scheme and an S-TRP communication scheme; the second beam number combination supported by the terminal and P. v Combinations of β and P; third beam number combinations not supported by the terminal. v Combinations of β and β.

[0174] In some embodiments, the second information includes whether the terminal supports the ability to dynamically switch between a specified scheme and the S-TRP communication scheme.

[0175] For example, the terminal sends a second message to the network device indicating whether the terminal supports the ability to dynamically switch between the specified scheme and the S-TRP communication scheme, in order to inform the network device that the terminal supports the ability to dynamically switch between the specified scheme and the S-TRP communication scheme.

[0176] In some embodiments, the second information includes a second beam number combination not supported by the terminal and P v Combinations of β and β.

[0177] For example, the terminal sends a second beam number combination that it does not support and P to the network device. v The second information of the combination of β is used to inform the network device terminal of the second beam number combination that is not supported by P. v Combinations of β and β.

[0178] In some embodiments, the second information includes the third beam number combination supported by the terminal and P v Combinations of β and β.

[0179] For example, the terminal sends to the network device a combination of third beam numbers supported by the terminal and P v The second information, β, is used to inform the network device terminal of the third beam number combination supported by P. v Combinations of β and β.

[0180] This publicly disclosed terminal can also report second information to the network device, and determine whether to select and return M NZP CSI-RS resources from N NZPCSI-RS resources based on the first information, thereby improving the feasibility of CJT-based communication.

[0181] Based on the same concept, this disclosure also provides a communication method performed on the network device side.

[0182] Figure 4 This is a flowchart illustrating yet another communication method according to an exemplary embodiment, such as... Figure 4 As shown, the method is executed by a network device and may include the following steps:

[0183] In step S31, the first message is sent.

[0184] In some embodiments, the network device sends first information. This first information can be used to determine that the CMR includes N NZP CSI-RS resources, where N is a positive integer.

[0185] For example, the network device sends first information to the terminal. This first information is used to determine that the CMR includes one NZPCSI-RS resource.

[0186] For example, the network device sends first information to the terminal. This first information is used to determine that the CMR includes multiple NZPCSI-RS resources.

[0187] In some embodiments, when N is greater than 1, the first information is further used to determine whether the terminal selects and returns M NZP CSI-RS resources from N NZPCSI-RS resources.

[0188] In some embodiments, when N is greater than 1, the first information can be used by the terminal to determine whether to select and return M NZP CSI-RS resources from N NZPCSI-RS resources. Here, M is less than or equal to N.

[0189] It is clear that the case where N is greater than 1 means that the CMR includes multiple NZP CSI-RS resources.

[0190] For example, in the case where CMR includes multiple NZP CSI-RS resources, the first information can be used by the terminal to determine whether to select and return M NZP CSI-RS resources from the N NZP CSI-RS resources.

[0191] For example, the first information indicates whether the terminal selects and returns M NZP CSI-RS resources from N NZP CSI-RS resources.

[0192] For example, upon receiving the first information, the terminal determines, based on preset rules, whether to select and return M NZP CSI-RS resources from N NZP CSI-RS resources. It is clear that the preset rules predefine whether the terminal selects and returns M NZP CSI-RS resources from N N ZZP CSI-RS resources.

[0193] This disclosure improves the communication flexibility based on the unified TCI status by determining whether to select M NZP CSI-RS resources from N NZP CSI-RS resources through first information.

[0194] In the communication method provided in this embodiment, the first information is further used to determine at least one first beam number combination, wherein the number of each beam in the first beam number combination is associated with an NZP CSI-RS resource.

[0195] It is understood that the first information is used to determine the embodiments of at least one first beam number combination. For the description of the corresponding embodiments and their associated embodiments on the terminal side, please refer to the description of the terminal side, which will not be repeated here.

[0196] The first information disclosed herein can also determine the beam number combination so as to determine whether to select and feed back M NZP CSI-RS resources from N NZPCSI-RS resources, thereby improving the communication flexibility based on the unified TCI status.

[0197] In the communication method provided in this embodiment, the first information is further used to determine at least one first parameter combination, wherein the first parameter combination includes frequency domain basis vector combination parameters P. v The non-zero coefficient parameter β.

[0198] It is understood that the second information is used to determine at least one embodiment of the first parameter combination. For the description of the corresponding embodiment and its associated embodiment on the terminal side, please refer to the description. This disclosure will not repeat it here.

[0199] The first information disclosed herein can also determine a first parameter combination so as to determine whether to select and feed back M NZP CSI-RS resources from N NZPCSI-RS resources, thereby improving the communication flexibility based on the unified TCI status.

[0200] In the communication method provided in this embodiment, the first information is used to instruct the terminal not to select or return M NZP CSI-RS resources from N NZP CSI-RS resources; or, the first information is used to instruct the terminal to select and return M NZP CSI-RS resources from N NZP CSI-RS resources.

[0201] It is understood that for the various embodiments of the first information configuration, please refer to the description of the corresponding embodiments on the terminal side and their associated embodiments, which will not be repeated here.

[0202] The first information disclosed herein can directly instruct the terminal whether to select and return M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the communication flexibility based on the unified TCI status.

[0203] In the communication method provided in the embodiments of this disclosure Figure 5 This is a flowchart illustrating another communication method according to an exemplary embodiment. For example... Figure 5 As shown, the method may also include the following steps:

[0204] In step S41, the second information is received.

[0205] In some embodiments, the network device may receive second information.

[0206] For example, a network device can receive a second message sent by a terminal.

[0207] In some embodiments, the second information includes at least one of the following: whether the terminal supports the ability to dynamically switch between a specified scheme and an S-TRP communication scheme; the second beam number combination supported by the terminal and P. v Combinations of β and P; third beam number combinations not supported by the terminal. v Combinations of β and β.

[0208] It is understood that for the various embodiments of the second information configuration, please refer to the description of the corresponding embodiments on the terminal side and their associated embodiments, which will not be repeated here.

[0209] This publicly disclosed terminal can also report second information to the network device, and determine whether to select and return M NZP CSI-RS resources from N NZPCSI-RS resources based on the first information, thereby improving the communication flexibility based on the unified TCI status.

[0210] In the communication method provided in this embodiment of the present disclosure, the second beam number combination and P vIf the combination of β is not supported by the terminal, the first information is used to determine that the terminal does not select or feed back M NZP CSI-RS resources from N NZP CSI-RS resources, wherein the second beam number combination is a subset of the first beam number combination.

[0211] In some embodiments, in the second beam number combination and P v If the combination of β and β is not supported, the first information can be used by the terminal to determine whether to select or report M NZP CSI-RS resources from N NZP CSI-RS resources. The second beam number combination is a subset of the first beam number combination.

[0212] It can be understood that in the second beam number combination and P v If the combination of β is not supported, the various embodiments of the first information can be referred to the description of the corresponding embodiments and their associated embodiments on the terminal side, which will not be repeated here.

[0213] This disclosure provides a scenario where the terminal does not select or respond to M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving communication flexibility based on a unified TCI state.

[0214] In the communication method provided in this embodiment, the second beam number combination and P v The combination of β and P is not supported by the terminal in the following cases: the protocol specifies that it does not support the combination of the second beam number and P. v The combination of β and β; the terminal does not support the second beam number combination with P. v Combinations of β and β; the terminal supports second beam number combinations with P. v The combination of β and β, and the terminal does not support dynamic switching between the specified scheme and the S-TRP communication scheme. The specified scheme uses M-TRP communication, and the second beam number combination includes one beam number.

[0215] It is clear that the second beam number combination and P v For embodiments where the combination of β is not supported, please refer to the description of the corresponding embodiments and their associated embodiments on the terminal side, which will not be repeated here.

[0216] This disclosure provides a scenario where the terminal does not select or respond to M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving communication flexibility based on a unified TCI state.

[0217] In the communication method provided in this embodiment, the third beam number combination and P vWhen the combination of β is supported by the terminal, the first information is used to determine the terminal to select and return M NZP CSI-RS resources from N NZP CSI-RS resources, wherein the third beam number combination is a subset of the first beam number combination.

[0218] In some embodiments, in the third beam number combination and P v When the combination of β and β is supported, the first information can be used by the terminal to determine and return M NZP CSI-RS resources from N NZP CSI-RS resources. The third beam combination is a subset of the first beam combination.

[0219] It is clear that in the third beam number combination and P v When the combination of β is supported, the various embodiments of the first information can be referred to the description of the corresponding embodiments and their associated embodiments on the terminal side, which will not be repeated here.

[0220] This disclosure provides a scenario where a terminal selects and returns M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving communication flexibility based on a unified TCI state.

[0221] In the communication method provided in this embodiment, the third beam number combination and P v The combination of β and P is supported by the terminal in the following cases: the third beam number combination supported by the protocol and P. v The combination of β and β; the combination of the third beam number supported by the terminal and P v Combinations of β and β.

[0222] It is clear that the third beam number combination and P v For the various embodiments in which the combination of β is supported, please refer to the description of the corresponding embodiments and their associated embodiments on the terminal side, which will not be repeated here.

[0223] This disclosure provides a scenario where a terminal selects and returns M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving communication flexibility based on a unified TCI state.

[0224] In the communication method provided in this embodiment, the specified scheme is CJT.

[0225] It is understood that for the various embodiments of the specified scheme CJT, the descriptions of the various embodiments of the specified scheme CJT on the terminal side and their related embodiments can be referred to, and will not be repeated here.

[0226] This disclosure provides a scenario where a terminal selects and returns M NZP CSI-RS resources from N NZP CSI-RS resources for communication via CJT, thereby improving the feasibility of CJT-based communication.

[0227] In the communication method provided in this disclosure, CJT includes at least one of the following: a CMR configured by the 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; a spatial basis vector is independently fed back for each of the multiple NZP CSI-RS resources; a frequency domain basis vector is independently fed back for each of the multiple NZP CSI-RS resources; and the same frequency domain basis vector is fed back for each of the multiple NZP CSI-RS resources.

[0228] It is understood that the various embodiments included in the specified scheme can be referred to the description of the corresponding embodiments and their associated embodiments on the terminal side, which will not be repeated here.

[0229] This disclosure provides several possible scenarios for the specified scheme. This allows for the determination, based on first information, of whether to select and provide feedback on M NZP CSI-RS resources from N NZPCSI-RS resources, improving communication flexibility based on a unified TCI state.

[0230] It should be noted that those skilled in the art will understand that the various implementation methods / embodiments described above in this disclosure can be used in conjunction with the foregoing embodiments, or they can be used independently. Whether used alone or in conjunction with the foregoing embodiments, the implementation principle is similar. In this disclosure, some embodiments are described as implementations used together. Of course, those skilled in the art will understand that such illustrative examples are not intended to limit the embodiments of this disclosure.

[0231] Based on the same concept, embodiments of this disclosure also provide a communication device or apparatus.

[0232] It is understood that the communication apparatus and devices provided in this disclosure, in order to achieve the above-mentioned functions, include hardware structures and / or software modules corresponding to the execution of each function. In conjunction with the units and algorithm steps of the various examples disclosed in this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of this disclosure.

[0233] Figure 6 This is a schematic diagram of a communication device according to an exemplary embodiment. (Refer to...) Figure 6 The device 200 includes: a receiving module 201, configured to receive first information, the first information being configured to determine that the CMR includes N NZP CSI-RS resources, where N is a positive integer; and a processing module 202, configured to determine whether the terminal selects and returns M NZP CSI-RS resources from the N N NZP CSI-RS resources when N is greater than 1, where M is less than or equal to N.

[0234] This disclosure improves the feasibility of CJT-based communication by determining whether to select M NZP CSI-RS resources from N NZP CSI-RS resources and providing feedback through first information.

[0235] In some implementations, the first information is also used to determine at least one first beam number combination, wherein the number of each beam in the first beam number combination is associated with an NZP CSI-RS resource.

[0236] The first information disclosed herein can also determine the beam number combination so as to determine whether to select and feed back M NZP CSI-RS resources from N NZPCSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0237] In some implementations, the first information is further used to determine at least one first parameter combination, wherein the first parameter combination includes frequency domain basis vector combination parameters P. v The non-zero coefficient parameter β.

[0238] The first information disclosed herein can also determine a first parameter combination so as to determine whether to select and feed back M NZP CSI-RS resources from N NZPCSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0239] In some embodiments, the processing module 202 is further configured to: in the second beam number combination with P v If the combination of β is not supported, it is determined that the terminal does not select or feed back 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.

[0240] This disclosure provides a scenario where the terminal does not select or return M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0241] In some implementations, the second beam number combination is related to P vThe combination of β and P is not supported in cases including at least one of the following: the protocol specifies that the combination of the second beam number and P is not supported. v The combination of β and β; the terminal does not support the second beam number combination with P. v Combinations of β and β; the terminal supports second beam number combinations with P. v The combination of β and β, and the terminal does not support dynamic switching between the specified scheme and the single transmit / receive point S-TRP communication scheme. The specified scheme adopts multi-transmit / receive point M-TRP communication, and the second beam number combination includes one beam number.

[0242] This disclosure provides a scenario where the terminal does not select or return M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0243] In some embodiments, the processing module 202 is further configured to: combine the third beam number with P v When the combination of β is supported, the terminal selects and feeds 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.

[0244] This disclosure provides a scenario where a terminal selects and returns M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0245] In some implementations, the third beam number combination is related to P v The combination of β and P is supported in cases where at least one of the following is true: the protocol specifies that the third beam number combination is supported in combination with P. v The combination of β and β; the combination of the third beam number supported by the terminal and P v Combinations of β and β.

[0246] This disclosure provides a scenario where a terminal selects and returns M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0247] In some implementations, the scheme is designated as Coherent Joint Transmission (CJT).

[0248] This disclosure provides a scenario where a terminal selects and returns M NZP CSI-RS resources from N NZP CSI-RS resources for communication via CJT, thereby improving the feasibility of CJT-based communication.

[0249] In some implementations, CJT includes at least one of the following: a CMR configured by the 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; independently feeding back spatial basis vectors for each of the multiple NZP CSI-RS resources; independently feeding back frequency domain basis vectors for each of the multiple NZP CSI-RS resources; and feeding back the same frequency domain basis vectors for each of the multiple NZP CSI-RS resources.

[0250] This disclosure provides several possible scenarios for the specified scheme. This allows for the determination, based on first information, of whether to select and provide feedback on M NZP CSI-RS resources from N NZPCSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0251] In some implementations, the first information is used to instruct the terminal not to select or return M NZP CSI-RS resources from N NZP CSI-RS resources; or, the first information is used to instruct the terminal to select and return M NZP CSI-RS resources from N NZP CSI-RS resources.

[0252] The first information disclosed herein can directly instruct the terminal whether to select and return M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0253] In some embodiments, the device 200 further includes: a transmitting module 203, configured to transmit second information; the second information includes at least one of the following: whether the terminal supports the ability to dynamically switch between a specified scheme and an S-TRP communication scheme; whether the terminal does not support a second beam number combination and P v The combination of β and β; the combination of the third beam number supported by the terminal and P v Combinations of β and β.

[0254] This publicly disclosed terminal can also report second information to the network device, and determine whether to select and return M NZP CSI-RS resources from N NZPCSI-RS resources based on the first information, thereby improving the feasibility of CJT-based communication.

[0255] Figure 7 This is a schematic diagram of another communication device according to an exemplary embodiment. (Refer to...) Figure 7 The device 300 includes: a transmitting module 301, used to transmit first information, the first information being used to determine that the CMR includes N NZP CSI-RS resources, where N is a positive integer.

[0256] This disclosure improves the feasibility of CJT-based communication by determining whether to select M NZP CSI-RS resources from N NZP CSI-RS resources and providing feedback through first information.

[0257] In some implementations, the first information is also used to determine at least one first beam number combination, wherein the number of each beam in the first beam number combination is associated with an NZP CSI-RS resource.

[0258] The first information disclosed herein can also determine the beam number combination so as to determine whether to select and feed back M NZP CSI-RS resources from N NZPCSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0259] In some implementations, the first information is further used to determine at least one first parameter combination, wherein the first parameter combination includes frequency domain basis vector combination parameters P. v The non-zero coefficient parameter β.

[0260] The first information disclosed herein can also determine a first parameter combination so as to determine whether to select and feed back M NZP CSI-RS resources from N NZPCSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0261] In some implementations, the first information is used to instruct the terminal not to select or return M NZP CSI-RS resources from N NZP CSI-RS resources; or, the first information is used to instruct the terminal to select and return M NZP CSI-RS resources from N NZP CSI-RS resources.

[0262] The first information disclosed herein can directly instruct the terminal whether to select and return M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0263] In some embodiments, the device 300 further includes: a receiving module 302, configured to receive second information; the second information includes at least one of the following: whether the terminal supports the ability to dynamically switch between a specified scheme and an S-TRP communication scheme; whether the terminal does not support a second beam number combination and P v The combination of β and β; the combination of the third beam number supported by the terminal and P v Combinations of β and β.

[0264] This publicly disclosed terminal can also report second information to the network device, and determine whether to select and return M NZP CSI-RS resources from N NZPCSI-RS resources based on the first information, thereby improving the feasibility of CJT-based communication.

[0265] In some implementations, the second beam number combination is related to P v The combination of β and P is not supported by the terminal in the following cases: the protocol specifies that it does not support the combination of the second beam number and P. v The combination of β and β; the terminal does not support the second beam number combination with P. v Combinations of β and β; the terminal supports second beam number combinations with P. v The combination of β and β, and the terminal does not support dynamic switching between the specified scheme and the single transmit / receive point S-TRP communication scheme. The specified scheme adopts multi-transmit / receive point M-TRP communication, and the second beam number combination includes one beam number.

[0266] This disclosure provides a scenario where the terminal does not select or return M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0267] In some implementations, the third beam number combination is related to P v The combination of β and P is supported by the terminal in the following cases: the third beam number combination supported by the protocol and P. v The combination of β and β; the combination of the third beam number supported by the terminal and P v Combinations of β and β.

[0268] This disclosure provides a scenario where a terminal selects and returns M NZP CSI-RS resources from N NZP CSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0269] In some implementations, the scheme is designated as Coherent Joint Transmission (CJT).

[0270] This disclosure provides a scenario where a terminal selects and returns M NZP CSI-RS resources from N NZP CSI-RS resources for communication via CJT, thereby improving the feasibility of CJT-based communication.

[0271] In some implementations, CJT includes at least one of the following: a CMR configured by the 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; independently feeding back spatial basis vectors for each of the multiple NZP CSI-RS resources; independently feeding back frequency domain basis vectors for each of the multiple NZP CSI-RS resources; and feeding back the same frequency domain basis vectors for each of the multiple NZP CSI-RS resources.

[0272] This disclosure provides several possible scenarios for the specified scheme. This allows for the determination, based on first information, of whether to select and provide feedback on M NZP CSI-RS resources from N NZPCSI-RS resources, thereby improving the feasibility of CJT-based communication.

[0273] It is understood that the aforementioned device 300 may also include any possible modules such as a processing module, which are not limited herein.

[0274] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0275] Figure 8 This is a schematic diagram illustrating a communication device according to an exemplary embodiment. For example, device 400 can be any terminal such as a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0276] Reference Figure 8 The device 400 may include one or more of the following components: processing component 402, memory 404, power component 406, multimedia component 408, audio component 410, input / output (I / O) interface 412, sensor component 414, and communication component 416.

[0277] Processing component 402 typically controls the overall operation of device 400, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 402 may include one or more processors 420 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 402 may include one or more modules to facilitate interaction between processing component 402 and other components. For example, processing component 402 may include a multimedia module to facilitate interaction between multimedia component 408 and processing component 402.

[0278] Memory 404 is configured to store various types of data to support the operation of device 400. Examples of this data include instructions for any application or method operating on device 400, contact data, phonebook data, messages, pictures, videos, etc. Memory 404 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, 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 storage, flash memory, magnetic disk, or optical disk.

[0279] The power supply component 406 provides power to the various components of the device 400. The power supply component 406 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power to the device 400.

[0280] 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 may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 408 includes a front-facing camera and / or a rear-facing camera. When the device 400 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0281] Audio component 410 is configured to output and / or input audio signals. For example, audio component 410 includes a microphone (MIC) configured to receive external audio signals when device 400 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 404 or transmitted via communication component 416. In some embodiments, audio component 410 also includes a speaker for outputting audio signals.

[0282] I / O interface 412 provides an interface between processing component 402 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0283] Sensor assembly 414 includes one or more sensors for providing status assessments of various aspects of device 400. For example, sensor assembly 414 may detect the on / off state of device 400, the relative positioning of components such as the display and keypad of device 400, changes in the position of device 400 or a component of device 400, the presence or absence of user contact with device 400, the orientation or acceleration / deceleration of device 400, and temperature changes of device 400. Sensor assembly 414 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 414 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 414 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0284] 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 3G, or combinations thereof. In one exemplary embodiment, communication component 416 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 416 also 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.

[0285] In an exemplary embodiment, device 400 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0286] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 404 including instructions, which can be executed by a processor 420 of device 400 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0287] Figure 9 This is a schematic diagram of another communication device according to an exemplary embodiment. For example, device 500 may be provided as a base station or a server. (See also...) Figure 9The device 500 includes a processing component 522, which further includes one or more processors, and memory resources represented by memory 532 for storing instructions executable by the processing component 522, such as application programs. The application programs 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 to perform the methods described above.

[0288] Device 500 may also include a power supply component 526 configured to perform power management of 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 operate on an operating system stored in memory 532, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or similar.

[0289] This disclosure provides a configuration restriction method for CMR when the terminal does not support dynamic selection of STRP and CJT during PDSCH CJT transmission, as well as a configuration and restriction method for selecting the number of NZP CSI-RS, thereby improving the feasibility of CJT-based communication.

[0290] It can be further understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0291] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0292] It is further understood that the meaning of words such as “responding to” and “if” used in this disclosure depends on the context and the actual usage scenario. For example, the word “responding to” as used herein can be interpreted as “when” or “if” or “if”.

[0293] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0294] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein.

[0295] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A communication method, characterized in that, The method is executed by a terminal and includes: Receive first information, the first information being used to determine that the channel measurement resource (CMR) includes N non-zero power channel state information reference signals (NZP CSI-RS) resources, where N is a positive integer; If N is greater than 1, determine whether the terminal selects and returns M NZP CSI-RS resources from the N N NZP CSI-RS resources, wherein M is less than or equal to N; The first information is also used to determine at least one first beam number combination, wherein the number of each beam in the first beam number combination is associated with an NZP CSI-RS resource. The first information is used to instruct the terminal not to select or return M NZP CSI-RS resources from the N NZP CSI-RS resources; or, the first information is used to instruct the terminal to select and return M NZP CSI-RS resources from the N NZP CSI-RS resources.

2. The method according to claim 1, characterized in that, The first information is further used to determine at least one first parameter combination, wherein the first parameter combination includes frequency domain basis vector combination parameters. The non-zero coefficient parameter β.

3. The method according to claim 2, characterized in that, The second beam number combination and the If the combination of β is not supported, it is determined that the terminal does not select or return M NZP CSI-RS resources from the N N ZP CSI-RS resources, wherein the second beam number combination is a subset of the first beam number combination.

4. The method according to claim 3, characterized in that, The second beam number combination and the The combination of β is not supported in cases including at least one of the following: The protocol specifies that the second beam number combination is not supported with the aforementioned The combination of β; The terminal does not support the second beam number combination and the... The combination of β; The terminal supports the second beam number combination and the... The combination of β, and the fact that the terminal does not support dynamic switching between the specified scheme and the single transmit / receive point (S-TRP) communication scheme, wherein the specified scheme adopts multi-transmit / receive point (M-TRP) communication, and the second beam number combination includes one beam number.

5. The method according to claim 2, characterized in that, In the third beam number combination and the aforementioned If the combination of β is supported, the terminal selects and returns M NZP CSI-RS resources from the N N ZP CSI-RS resources, wherein the third beam number combination is a subset of the first beam number combination.

6. The method according to claim 5, characterized in that, The third beam number combination and the The combination of β is supported in at least one of the following cases: The protocol specifies the supported third beam number combination and the The combination of β; The third beam number combination supported by the terminal and the The combination of β.

7. The method according to claim 4, characterized in that, The specified scheme is Coherent Joint Transmission (CJT).

8. The method according to claim 7, characterized in that, The CJT includes at least one of the following: A CMR configured in a network device includes L NZP CSI-RS resources, where L is a positive integer, and one NZPCSI-RS resource corresponds to one TRP or one TRP group; Independently feed back spatial basis vectors for each of the multiple NZP CSI-RS resources; Independent feedback frequency domain basis vectors for each of the multiple NZP CSI-RS resources; The same frequency domain basis vector is fed back for each of the multiple NZP CSI-RS resources.

9. The method according to claim 2, characterized in that, The method further includes: Send a second message; The second information includes at least one of the following: Does the terminal support the ability to dynamically switch between a specified scheme and the S-TRP communication scheme? The second beam number combination not supported by the terminal and the The combination of β; The third beam number combination supported by the terminal and the The combination of β.

10. A communication method, characterized in that, The method is executed by a network device and includes: Send first information, the first information being used to determine that the channel measurement resource (CMR) includes N non-zero power channel state information reference signals (NZP CSI-RS) resources, where N is a positive integer; the first information is also used to determine at least one first beam number combination, wherein the number of each beam in the first beam number combination is associated with one NZP CSI-RS resource; The first information is used to instruct the terminal not to select or return M NZP CSI-RS resources from the N NZP CSI-RS resources, wherein M is less than or equal to N; or, the first information is used to instruct the terminal to select and return M NZP CSI-RS resources from the N NZP CSI-RS resources.

11. The method according to claim 10, characterized in that, The first information is further used to determine at least one first parameter combination, wherein the first parameter combination includes frequency domain basis vector combination parameters. The non-zero coefficient parameter β.

12. The method according to claim 11, characterized in that, The method further includes: Receive the second message; The second information includes at least one of the following: Does the terminal support the ability to dynamically switch between a specified scheme and the S-TRP communication scheme? The second beam number combination not supported by the terminal and the The combination of β; The third beam number combination supported by the terminal and the The combination of β.

13. The method according to claim 12, characterized in that, The second beam number combination and the The case where the combination of β is not supported by the terminal includes at least one of the following: The protocol specifies that the second beam number combination is not supported with the aforementioned The combination of β; The terminal does not support the second beam number combination and the... The combination of β; The terminal supports the second beam number combination and the... The combination of β, and the fact that the terminal does not support dynamic switching between the specified scheme and the single transmit / receive point (S-TRP) communication scheme, wherein the specified scheme adopts multi-transmit / receive point (M-TRP) communication, and the second beam number combination includes one beam number.

14. The method according to claim 12, characterized in that, The third beam number combination and the The combination of β is supported by the terminal, including at least one of the following: The protocol specifies the supported third beam number combination and the The combination of β; The third beam number combination supported by the terminal and the The combination of β.

15. The method according to claim 13, characterized in that, The specified scheme is Coherent Joint Transmission (CJT).

16. The method according to claim 15, characterized in that, The CJT includes at least one of the following: The network device is configured with a CMR including L NZP CSI-RS resources, where L is a positive integer, and one NZPCSI-RS resource corresponds to one TRP or one TRP group; Independently feed back spatial basis vectors for each of the multiple NZP CSI-RS resources; Independent feedback frequency domain basis vectors for each of the multiple NZP CSI-RS resources; The same frequency domain basis vector is fed back for each of the multiple NZP CSI-RS resources.

17. A communication device, characterized in that, The device includes: The receiving module is configured to receive first information, which is used to determine that the channel measurement resource (CMR) includes N non-zero power channel state information reference signals (NZP CSI-RS) resources, wherein N is a positive integer; The processing module is configured to determine, when N is greater than 1, whether the terminal selects and returns M NZP CSI-RS resources from the N N NZP CSI-RS resources, wherein M is less than or equal to N; The first information is used to determine at least one first beam number combination, wherein the number of each beam in the first beam number combination is associated with an NZP CSI-RS resource; The first information is used to instruct the terminal not to select or return M NZP CSI-RS resources from the N NZP CSI-RS resources; or, the first information is used to instruct the terminal to select and return M NZP CSI-RS resources from the N NZP CSI-RS resources.

18. A communication device, characterized in that, The device includes: The transmitting module is used to transmit first information, which is used to determine that the channel measurement resource (CMR) includes N non-zero power channel state information reference signals (NZP CSI-RS) resources, where N is a positive integer; The first information is used to determine at least one first beam number combination, wherein the number of each beam in the first beam number combination is associated with an NZP CSI-RS resource; The first information is used to instruct the terminal not to select or return M NZP CSI-RS resources from the N NZP CSI-RS resources, wherein M is less than or equal to N; or, the first information is used to instruct the terminal to select and return M NZP CSI-RS resources from the N NZP CSI-RS resources.

19. A communication device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to perform the method described in any one of claims 1 to 9.

20. A communication device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to perform the method according to any one of claims 10 to 16.

21. A non-transitory computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor of the terminal, the terminal is able to perform the method according to any one of claims 1 to 9.

22. A non-transitory computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor of the network device, the network device is able to perform the method of any one of claims 10 to 16.

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