Information feedback method and apparatus

Abstract

The present application provides an information feedback method and apparatus, relating to the field of communications, and capable of implementing feedback of channel state information (CSI) respectively corresponding to a plurality of analog beams. The method comprises: a terminal device receiving Ks reference signals from an access network device; determining, on the basis of the Ks parameter signals, a CSI report corresponding to M reference signals among the Ks parameter signals; and then sending the CSI report to the access network device, wherein the CSI report indicates one or more of the following: resource indications of M resources corresponding to the M reference signals, M first-type parameters corresponding to the M resources, M second-type parameters corresponding to the M resources, and a priority order of the M resources, and in the CSI report, the M first-type parameters are arranged in the order of the resource indications of the M resources, the M second-type parameters are arranged in the priority order of the M resources, and Ks and M are both positive integers greater than 1.

Description

Information feedback method and device

[0001] The present application claims priority to the Chinese patent application No. 202410891320.4, filed on July 3, 2024, and entitled "Information feedback method and device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication, in particular to an information feedback method and device. BACKGROUND

[0003] In a high frequency communication system, the energy of a transmission signal can be limited in a specific beam direction by a hybrid beamforming (HBF) technology, so as to achieve higher antenna array gain. The HBF technology needs to ensure that the analog beams are aligned with the communication target through beam scanning.

[0004] A process of beam scanning is as follows: a base station sends a reference signal to a terminal through different analog beams, and the terminal measures the reference signal to determine channel state information (CSI) of a channel corresponding to the reference signal. The CSI can reflect the beam quality of the analog beam corresponding to the reference signal, and a matched analog beam can be determined for the terminal according to the CSI, so as to achieve beam alignment.

[0005] However, when the number of analog beams increases, the terminal needs to report the CSI corresponding to each analog beam, and therefore, how to feed back the CSI corresponding to multiple analog beams is a technical problem to be solved. SUMMARY

[0006] The information feedback method and device provided by the embodiments of the present application can feed back the CSI corresponding to multiple analog beams.

[0007] In a first aspect, a method for information feedback is provided, which can be performed by a terminal device. The method comprises: receiving Ks reference signals from an access network device; determining, according to the Ks reference signals, channel state information (CSI) reports corresponding to M reference signals in the Ks reference signals; and sending the CSI reports to the access network device. The CSI reports indicate one or more of the following: resource indications of M resources corresponding to the M reference signals, M first-type parameters corresponding to the M resources, M second-type parameters corresponding to the M resources, and an order of the M resources. In the CSI reports, the M first-type parameters are arranged in the order of the resource indications of the M resources, and the M second-type parameters are arranged in the order of priorities of the M resources. Ks and M are positive integers greater than 1.

[0008] Based on the scheme, the terminal device can determine channel state information (including M first-type parameters and / or M second-type parameters corresponding to M resources corresponding to the M reference signals) corresponding to part of the reference signals (M reference signals) in the multiple reference signals (Ks reference signals) according to the multiple reference signals, and report the multiple channel state information to the access network device (such as reporting through CSI reports).

[0009] In the M first-type parameters, the arrangement rule of each CSI parameter can be different from the arrangement rule of each precoding matrix indicator (PMI) in the M second-type parameters. For example, each parameter in the M first-type parameters can be arranged in the order of the resource indications of the M resources, and each parameter in the M second-type parameters can be arranged in the order of the priorities of the M resources. For example, the M second-type parameters can be arranged in the order of the priorities of the M resources from high to low. Thus, when the M first-type parameters are arranged before the M second-type parameters, and the uplink resources are limited, the reporting of the parameters corresponding to the resources with higher priorities can be guaranteed first. That is, when the uplink resources are limited, the terminal device can still report the channel state information of the resources with higher priorities.

[0010] In a possible design, before determining, according to the Ks reference signals, the CSI reports corresponding to the M reference signals in the Ks reference signals, the method further comprises: receiving first indication information, the first indication information being used to indicate the M resources, the M resources including M R resources, and M R resources, and M RM is a positive integer less than or equal to M; the CSI report indicates resource indication of the M resources, including: the CSI report includes M channel state information reference signal resource identifiers (CRIs), and the M CRIs correspond to the M resources respectively;

[0011] When the M R resources are the first M R resources with the highest priority among the M resources, in the CSI report, the M R CRIs corresponding to the M R resources are located before the M-M R CRIs corresponding to the M-M R resources, and the M-M R resources are resources other than the M R resources among the M resources.

[0012] When the M R resources are not the first M R resources with the highest priority among the M resources, in the CSI report, the M CRIs are arranged according to the priority order of the M resources.

[0013] Based on the possible design, when the M R resources among the M resources are indicated by the access network device, the terminal device can flexibly select the way of reporting the CRIs of the M resources based on the rule of the access network device selecting the M R resources (i.e., the relationship between the M R resources and the Ks resources). For example, when the M R resources are the first M R resources with the highest priority among the M resources, the terminal device can preferentially report the CRIs of the M R resources, and then report the CRIs of the resources other than the M R resources among the M resources (i.e., the M R CRIs corresponding to the M R resources are located before the M-M R CRIs corresponding to the M-M R resources). Or, when the M R resources are not the first M R resources with the highest priority among the M resources, the terminal device can report the CRIs of the M resources according to the priority order of the M resources (i.e., in the CSI report, the M CRIs are arranged according to the priority order of the M resources). Thus, the flexibility of the terminal device reporting the CRIs of the M resources is improved.

[0014] In a possible design, before determining the CSI report corresponding to the M reference signals in the Ks parameter signals, the information feedback method further includes: receiving first indication information, the first indication information being used to indicate M R resources, the M resources including M R resources, and M R being a positive integer less than or equal to M; and the CSI report indicating resource indication of the M resources, including: the CSI report including a bit bitmap of Ks-M R bits and M R CRIs corresponding to the M resources, one bit in the bit bitmap corresponding to one CRI, the one CRI corresponding to one resource in the Ks-M R resources, and a value of the one bit being used to indicate whether the M resources include the resource corresponding to the one bit, the Ks-M R resources being resources other than the M R resources in the Ks resources.

[0015] Based on the possible design, when the access network device indicates reporting of the CRIs corresponding to part of the M resources (i.e., M R resources), the terminal device does not need to indicate the part of the resources in the bit bitmap, i.e., the size of the bit bitmap can be Ks-M R bits, thereby reducing the bit number of the bit bitmap and saving resources.

[0016] In a second aspect, an information feedback method is provided, which can be performed by an access network device. In the absence of special description, the access network device in the present application can refer to the access network device itself (for example, a network device), a component (for example, a communication module, a processor, a circuit, a chip, or a chip system) in the access network device, or a logic module or software capable of realizing all or part of the functions of the access network device. The method includes: sending Ks reference signals to a terminal device; receiving a CSI report from the terminal device, the CSI report being determined according to the Ks reference signals; wherein the CSI report indicates one or more of the following: resource indication of M resources corresponding to M reference signals in the Ks reference signals, M first-type parameters corresponding to the M resources, M second-type parameters corresponding to the M resources, and priority order of the M resources; in the CSI report, the M first-type parameters are arranged in the order of the resource indication of the M resources, and the M second-type parameters are arranged in the priority order of the M resources, Ks and M being positive integers greater than or equal to 2.

[0017] Based on this scheme, the access network device can receive CSI reports corresponding to M reference signals from the terminal device; wherein, the terminal device can determine the channel state information (including M first-type parameters and / or M second-type parameters corresponding to M resources (i.e., resources corresponding to M reference signals) among the multiple parameter signals (i.e., Ks reference signals) based on the multiple reference signals (i.e., Ks reference signals), and report the multiple channel state information to the access network device (e.g., through CSI reports).

[0018] The arrangement rule of each CSI parameter in the M first-type parameters can differ from the arrangement rule of each PMI parameter in the M second-type parameters. For example, the parameters in the M first-type parameters can be arranged according to the resource indication order of the M resources, while the M second-type parameters can be arranged according to the priority order of the M resources. For instance, the M second-type parameters can be arranged in descending order of priority among the M resources. Therefore, when the M first-type parameters precede the M second-type parameters, and uplink resources are limited, priority can be given to reporting parameters corresponding to higher-priority resources; that is, even when uplink resources are limited, the terminal device can still report channel state information of higher-priority resources.

[0019] In one possible design, before receiving a Channel State Information (CSI) report from the terminal device, the information feedback method further includes: sending first indication information, the first indication information being used to indicate M. R There are M resources, including M... R One resource, and M R A positive integer less than or equal to M; the CSI report indicates the resource indications of M resources, including: the CSI report includes M Channel State Information Reference Signal Resource Identifiers (CRIs), and the M CRIs correspond to the M resources respectively;

[0020] Where, when M R The resource is the top M resources with the highest priority among the M resources. R When a resource is mentioned, in the CSI report, M R M corresponding to each resource R CRI is located in MM R MM corresponding to each resource R Before one CRI, MM R The resources are M resources excluding M. R Resources other than those resources; when M R The resource is not the highest priority among the M resources. R When there are M resources, in the CSI report, the M CRIs are arranged in order of priority of the M resources.

[0021] In a possible design, before receiving the CSI report from the terminal device, the information feedback method further includes: sending first indication information, the first indication information being used to indicate M R resources, the M R resources being resources in the Ks resources corresponding to the Ks reference signals, and M R being a positive integer less than or equal to M; and the CSI report indicating resource indication of the M resources, including: the CSI report including a bit bitmap of Ks-M R bits and CRIs corresponding to the M R resources respectively, one bit in the bit bitmap corresponding to one CRI, the one CRI corresponding to one resource in the Ks-M R resources, a value of the one bit being used to indicate whether the M resources include the resource corresponding to the one bit, the Ks-M R resources being resources in the Ks resources other than the M R resources.

[0022] The technical effects brought by any design in the second aspect can be referred to the technical effects brought by the corresponding design in the first aspect, which will not be repeated here.

[0023] In combination with the first aspect and the second aspect, in a possible design, the codebook type includes Type I and Type II; in Type I, Ks is a positive integer greater than 1 and less than or equal to 8, and M is a positive integer greater than or equal to 1 and less than or equal to 4; in Type II, Ks is a positive integer greater than 1 and less than or equal to 4, and M is equal to any one of 1 or 2.

[0024] In combination with the first aspect and the second aspect, in a possible design, the codebook type includes Type I and Type II; in Type I, M R is equal to 1 or 2; in Type II, M R is equal to 1 or 2, and the M resources include the M R resources.

[0025] In combination with the first aspect and the second aspect, in a possible design, M is a positive integer less than or equal to Ks, and M R is a positive integer less than M; when Ks is equal to 8, M is equal to any one of 1, 2, 3, 4, 5, 6, or 7; correspondingly, M R is equal to any one of 1, 2, 3, 4, 5, or 6 less than M; when Ks is equal to 4, M is equal to any one of 1, 2, or 3; correspondingly, M R is equal to any one of 1 or 2 less than M.

[0026] With the first aspect and the second aspect, in a possible design, when the value of Ks is 8, the value of M is 4; correspondingly, the value of M R is 1 or 2; when the value of Ks is 4, the value of M is 2; correspondingly, the value of M R is 1.

[0027] With the first aspect and the second aspect, in a possible design, the CSI report indicates the resource indication of the M resources, including: the CSI report includes a first set of index values, and the first set of index values are associated with the CRIs corresponding to the M resources.

[0028] With the first aspect and the second aspect, in a possible design, the first set of index values are associated with the M resources, including: the M resources are a group of CRIs corresponding to the first set of index values in a correspondence relationship between a plurality of sets of index values and a plurality of groups of CRIs.

[0029] Based on the above two possible designs, the access network device can group the CRIs corresponding to the Ks resources to obtain a plurality of groups of CRIs, so that when the CRIs corresponding to the M resources are located in the same group, the terminal device can indicate the index of the group to indicate the CRIs corresponding to the M resources. Generally, in the case of a certain number of CRIs, the number of bits required to indicate the index of the group is much smaller than the number of bits required to individually indicate the CRIs of each resource, thereby saving resources.

[0030] With the first aspect and the second aspect, in a possible design, when the order of the resource indication of the M resources includes the priority order of the M resources, the CSI report indicates one or more of the following: the resource indication of the M resources, the M first-type parameters, or the M second-type parameters.

[0031] With the first aspect and the second aspect, in a possible design, the CSI report indicates the resource indication of the M resources, including: the CSI report includes a bit bitmap of Ks bits, one bit in the bit bitmap corresponds to one CRI, the one CRI corresponds to one resource in the Ks resources, and the value of the one bit is used to indicate whether the M resources include the resource corresponding to the one bit, and the Ks resources are resources corresponding to Ks reference signals.

[0032] Based on this possible design, the terminal device can indicate the resource indication of the M resources it reports by setting a bit bitmap of Ks bits, providing a possible implementation for the implementation of reporting the resource indication of the M resources in this application.

[0033] With reference to the first aspect and the second aspect, in a possible design, when the CSI report includes M resource indications and / or M first-type parameters, part or all of the M resource indications are located in the first part, and part or all of the M first-type parameters are located in the first part; and / or, when the CSI report includes M second-type parameters and / or priority orders of the M resources, the M second-type parameters are located in a second part, and the priority orders of the M resources are located in the second part, where the second part is located after the first part.

[0034] With reference to the first aspect and the second aspect, in a possible design, when part of the M resource indications are located in the first part, another part of the M resource indications are located in the second part; and / or, when part of the M first-type parameters are located in the first part, another part of the M first-type parameters are located in the second part.

[0035] With reference to the first aspect and the second aspect, in a possible design, when part of the M resource indications are located in the first part, another part of the M resource indications are located before the second part and after the first part; and / or, when part of the M first-type parameters are located in the first part, another part of the M first-type parameters are located before the second part and after the first part.

[0036] With reference to the first aspect and the second aspect, in a possible design, the CSI report indicates M second-type parameters, including: the CSI report includes one or more precoding matrix indicator (PMI) parameters; where the M second-type parameters include one or more PMI parameters, each of the one or more PMI parameters includes one or more values, and each of the one or more values corresponds to a CRI, which is a CRI corresponding to one of the M resources.

[0037] When one of the one or more PMI parameters includes multiple values, the M second-type parameters are arranged according to priority orders of the M resources, including: the multiple values included in the one PMI parameter are arranged according to priority orders of part or all of the M resources, and the CRIs corresponding to the multiple values are CRIs corresponding to the part or all of the M resources.

[0038] With reference to the first aspect and the second aspect, in a possible design, the CSI report further includes priority orders of part or all of the M resources; where the priority orders of the part or all of the M resources are located before the one or more PMI parameters.

[0039] Alternatively, the priority order of the partial or all resources comprises priority indications corresponding to the partial or all resources respectively, wherein the priority indication of the first resource is located before the value of the PMI parameter corresponding to the CRI of the first resource, and the value of the PMI parameter corresponding to the CRI of the first resource is located before the priority indication of the second resource; wherein the first resource and the second resource are resources in the partial or all resources, and the value of the PMI parameter corresponding to the CRI of the first resource is a value corresponding to the CRI of the first resource in the multiple values in each PMI parameter.

[0040] Based on the above two possible designs, the multiple values included in any one PMI parameter are arranged according to the priority order of the partial or all resources, for example, the multiple values are arranged according to the priority order of the partial or all resources from high to low, so that in the case of uplink resource limitation, the parameters of the resources with higher priority can be preferentially guaranteed.

[0041] In combination with the first aspect and the second aspect, in a possible design, the one or more PMI parameters comprise one or more of: a group 0 corresponding to the PMI, a group 1 corresponding to the PMI, or a group 2 corresponding to the PMI, the group 1 corresponding to the PMI being related to the number of spatial bases; wherein the value of the PMI parameter corresponding to the first resource comprises: a value corresponding to the first CRI in one or more values of the group 0 corresponding to the PMI, a value corresponding to the first CRI in one or more values of the group 1 corresponding to the PMI, and / or a value corresponding to the first CRI in one or more values of the group 2 corresponding to the PMI; wherein the first CRI is a CRI corresponding to the first resource.

[0042] The value corresponding to the first CRI in one or more values of the group 0 corresponding to the PMI is located before the value corresponding to the first CRI in one or more values of the group 1 corresponding to the PMI; and the value corresponding to the first CRI in one or more values of the group 1 corresponding to the PMI is located before the value corresponding to the first CRI in one or more values of the group 2 corresponding to the PMI, the first CRI being a CRI corresponding to the first resource.

[0043] In combination with the first aspect and the second aspect, in a possible design, the CSI report indicates M first-type parameters, comprising: the CSI report comprises one or more CSI parameters; wherein the M first-type parameters comprise one or more CSI parameters, each of the one or more CSI parameters comprises M values, and each of the M values corresponds to one CRI, the one CRI being a CRI corresponding to M resources.

[0044] At this time, the M first-type parameters are arranged according to the resource indication order of the M resources, comprising: the M values included in each parameter are arranged according to the resource indication order of the M resources.

[0045] Based on the possible design, the terminal device can report the CRIs of the M selected resources in sequence, and further, can report the CSI parameters corresponding to each CRI in the M first type parameters in sequence according to the reporting sequence of the CRIs of the M resources, so that the access network device can learn the relationship between each parameter in the M first type parameters and the CRI of the M resources when receiving the CSI report, thereby determining the information of the CSI parameter corresponding to each resource respectively, and realizing information feedback.

[0046] In a possible design in combination with the first aspect and the second aspect, the one or more CSI parameters include one or more of the following: a rank indicator (RI), a wideband channel quality indication (CQI) of a first transport block (TB), a subband differential CQI of the first TB, a number of selected spatial domain bases, or an indicator K of a sum of non-zero coefficients of all layers. NZ .

[0047] In a possible design in combination with the first aspect and the second aspect, the CSI report further includes resource indications of the M resources; the resource indications of the M resources are located before the one or more CSI parameters; or,

[0048] The resource indications of the M resources include CRIs corresponding to the M resources respectively, where the CRI of the third resource is located before a value of the CSI parameter corresponding to the CRI of the third resource, and the value of the CSI parameter corresponding to the CRI of the third resource is located before the CRI of the fourth resource, the M resources include the third resource and the fourth resource, and the value of the CSI parameter corresponding to the CRI of the third resource is a value corresponding to the CRI of the third resource in a plurality of values in each CSI parameter.

[0049] In a possible design in combination with the first aspect and the second aspect, when the one or more CSI parameters include the number of selected spatial domain bases, the CSI report includes M values of the number of selected spatial domain bases; or the CSI report includes a second group of index values, the second group of index values are associated with the M values of the number of selected spatial domain bases; or the CSI report includes a first numerical value, and the M values of the number of selected spatial domain bases are all the first numerical value.

[0050] With reference to the first aspect and the second aspect, in a possible design, when the CSI report includes the second group of index values or the first number, and the CRI corresponding to the third resource is located before the value of the CSI parameter corresponding to the third resource, the CSI parameter corresponding to one of the M resources includes one or more of the second group of index values or the first number, the value of the CRI corresponding to the one of the M resources in the M values of the RI, the value of the CRI corresponding to the one of the M resources in the M values of the CQI in the first TB, the value of the CRI corresponding to the one of the M resources in the M values of the subband differential CQI of the first TB, or the value of the CRI corresponding to the one of the M resources in the M values of K NZ .

[0051] The value of the CSI parameter corresponding to the CRI of any one of the M resources other than the one of the M resources includes one or more of the value of the CRI corresponding to the any one of the M resources in the M values of the RI, the value of the CRI corresponding to the any one of the M resources in the M values of the CQI in the first TB, the value of the CRI corresponding to the any one of the M resources in the M values of the subband differential CQI of the first TB, or the value of the CRI corresponding to the any one of the M resources in the M values of K NZ .

[0052] With reference to the first aspect and the second aspect, in a possible design, when the CSI report includes the second group of index values or the first number, and the CRI corresponding to the third resource is located before the value of the CSI parameter corresponding to the third resource, the second group of index values is located after the value of the CSI parameter corresponding to the M resources; or the first number is located after the value of the CSI parameter corresponding to the M resources.

[0053] With reference to the first aspect and the second aspect, in a possible design, when one or more CSI parameters contain K NZ , the CSI report includes a third group of index values, the third group of index values is associated with the M values of K NZ ; or the CSI report includes a second number, the second number is a sum of the M values of K NZ .

[0054] Combining the first and second aspects, in one possible design, when the CSI report includes a third set of index values ​​or a second value, and the CRI corresponding to the third resource is located before the value of the CSI parameter corresponding to the third resource, the CSI parameter corresponding to one of the M resources includes one or more of the following: the third set of index values ​​or a second value, the CRI corresponding to the resource among the M values ​​of RI, the CRI corresponding to the resource among the M values ​​of CQI in the first TB, the CRI corresponding to the resource among the M values ​​of sub-band differential CQI in the first TB, or the CRI corresponding to the resource among the M values ​​of the number of selected spatial bases.

[0055] The CSI parameter value corresponding to the CRI of any resource other than the specified resource among the M resources includes one or more of the following: the CRI value of the specified resource among the M values ​​of RI; the CRI value of the specified resource among the M values ​​of CQI in the first TB; the CRI value of the specified resource among the M values ​​of sub-band differential CQI in the first TB; or the CRI value of the specified resource among the M values ​​of the number of selected spatial bases.

[0056] Combining the first and second aspects, in one possible design, when the CSI report includes a third set of index values ​​or a second value, and the CRI corresponding to the third resource is located before the value of the CSI parameter corresponding to the third resource, the third set of index values ​​is located after the value of the CSI parameter corresponding to the M resources; or, the second value is located after the value of the CSI parameter corresponding to the M resources.

[0057] Combining the four possible designs mentioned above, when the M first-type parameters include K NZ When considering the number of selected airspace bases, the terminal device can choose to use a combination of indicated schemes (such as a second set of index values ​​and / or a third set of index values), common values ​​(such as a second numerical value), or sum values ​​(such as K). NZ K is reported in the form of the sum of M values. NZ Or the number of selected airspace bases, compared to reporting K alone. NZ The M values ​​can be selected, and / or the number of selected spatial bases can be reported individually. The number of bits required to report this parameter is smaller, thus saving resources.

[0058] Combining the first and second aspects, in one possible design, when the M second-type parameters include group 1 corresponding to PMI and group 2 corresponding to PMI, the M values ​​of group 1 corresponding to PMI and the M values ​​of group 2 corresponding to PMI can be arranged in the order of the parameter priority function.

[0059] With reference to the first aspect and the second aspect, in a possible design, the parameter priority function includes the following content:

[0060] wherein, denotes the m th priority in the priority order of the M resources, denotes the number of selected spatial bases corresponding to the resource with the m th priority in the M resources, N 3 denotes the number of subbands corresponding to the bandwidth of a single resource, M v denotes the number of selected subbands.

[0061] In a third aspect, a communication apparatus is provided for implementing various methods. The communication apparatus can be a terminal device in the first aspect, or an access network device in the second aspect, or a chip or chip system included in the terminal device or the access network device. The communication apparatus includes modules, units, or means corresponding to the methods, which can be implemented by hardware, by software, or by a combination of hardware and software. The hardware or software includes one or more modules or units corresponding to the functions.

[0062] In some possible designs, the communication apparatus can include a processing module and a transceiver module. The processing module can be configured to implement the processing functions in any of the above aspects and any possible implementation manners. The transceiver module can include a receiving module and a sending module, which are configured to implement the receiving functions and the sending functions in any of the above aspects and any possible implementation manners.

[0063] In some possible designs, the transceiver module can be composed of a transceiver circuit, a transceiver, a transceiver, or a communication interface.

[0064] In a fourth aspect, a communication apparatus is provided, including a processor and a memory. The memory is configured to store computer instructions, and when the processor executes the instructions, the communication apparatus is caused to perform the method in any of the above aspects. The communication apparatus can be a terminal device in the first aspect, or an access network device in the second aspect, or a chip or chip system included in the terminal device or the access network device. The communication apparatus includes modules, units, or means corresponding to the methods, which can be implemented by hardware, by software, or by a combination of hardware and software. The hardware or software includes one or more modules or units corresponding to the functions.

[0065] In a fifth aspect, a communication apparatus is provided, which comprises: a processor and a communication interface; the communication interface is configured to communicate with modules outside the communication apparatus; the processor is configured to execute computer programs or instructions to enable the communication apparatus to perform the method in any of the aspects. The communication apparatus can be the terminal device in the first aspect, or the access network device in the second aspect, or a device included in the terminal device or the access network device, such as a chip or a chip system. The communication apparatus comprises modules, units or means corresponding to the method, which can be implemented by hardware, software or by hardware executing corresponding software. The hardware or software comprises one or more modules or units corresponding to the functions.

[0066] In a sixth aspect, a communication apparatus is provided, which comprises: at least one processor; the processor is configured to execute computer programs or instructions to enable the communication apparatus to perform the method in any of the aspects. The communication apparatus can be the terminal device in the first aspect, or the access network device in the second aspect, or a device included in the terminal device or the access network device, such as a chip or a chip system. The communication apparatus comprises modules, units or means corresponding to the method, which can be implemented by hardware, software or by hardware executing corresponding software. The hardware or software comprises one or more modules or units corresponding to the functions.

[0067] In some possible designs, the communication apparatus comprises a memory, which is configured to store necessary programs instructions and data. The memory can be coupled with the processor, or can be independent of the processor.

[0068] In some possible designs, when the apparatus is a chip system, the apparatus can be composed of a chip, or can comprise a chip and other discrete devices.

[0069] It can be understood that, when the communication apparatus in any of the third aspect to the sixth aspect is a chip, the transmitting action / function of the communication apparatus can be understood as outputting information, and the receiving action / function of the communication apparatus can be understood as inputting information.

[0070] The communication apparatus can be a terminal device, or a communication module in the terminal device, or a chip responsible for communication functions in the terminal device, such as a Modem chip (also known as a baseband chip), or a system on chip (SoC) chip or a system in a package (SIP) chip comprising a modem module.

[0071] And / or, the communication device can be an access network device, or a communication module in the access network device, or a circuit or chip responsible for communication functions in the access network device, or a functional module capable of invoking and executing programs in the access network device.

[0072] In a seventh aspect, a computer-readable storage medium is provided, which stores a computer program or instructions, when running on a communication device, causes the communication device to perform the method of any one of the aspects.

[0073] In an eighth aspect, a computer program product containing instructions is provided, when running on a communication device, causes the communication device to perform the method of any one of the aspects.

[0074] In a ninth aspect, a communication system is provided, which includes the terminal device (or the device included in the terminal device, such as a chip or chip system) in the first aspect and the access network device (or the device included in the access network device, such as a chip or chip system) in the second aspect.

[0075] The technical effects brought by any one of the third to ninth aspects can be referred to the technical effects brought by different design manners in the first or second aspects, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0076] FIG. 1 is a schematic diagram of an architecture of a wireless communication system suitable for embodiments of the present application;

[0077] FIG. 2 is another schematic diagram of an architecture of a wireless communication system suitable for embodiments of the present application;

[0078] FIG. 3 is still another schematic diagram of an architecture of a wireless communication system suitable for embodiments of the present application;

[0079] FIG. 4 is a schematic diagram of a communication network element structure between an access network device and a terminal device according to the present application;

[0080] FIG. 5 is a schematic diagram of a beamforming working principle according to the present application;

[0081] FIG. 6 is a schematic diagram of a working principle of a spatial domain basis and a frequency domain basis according to the present application;

[0082] FIG. 7 is a flowchart of a method of information feedback according to the present application;

[0083] FIG. 8 is a flowchart of another method of information feedback according to the present application;

[0084] FIG. 9 is a flowchart of still another method of information feedback according to the present application;

[0085] FIG. 10 is a structural schematic diagram of a communication apparatus provided by the present application;

[0086] FIG. 11 is a structural schematic diagram of another communication apparatus provided by the present application;

[0087] FIG. 12 is a structural schematic diagram of still another communication apparatus provided by the present application. DETAILED DESCRIPTION

[0088] In the description of the present application, unless otherwise specified, “ / ” represents that the objects before and after the “ / ” are in an “or” relationship, for example, A / B can represent A or B; “and / or” in the present application is only a description of the relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural.

[0089] In the description of the present application, unless otherwise specified, “multiple” means two or more than two. “At least one of the following” or the like means any combination of the items, including any combination of single item or multiple items. For example, at least one of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, and c can be single or multiple.

[0090] In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the same items or similar items with basically the same functions and effects are distinguished by using “first”, “second”, etc. The skilled in the art can understand that “first”, “second”, etc. do not limit the quantity and execution order, and “first”, “second”, etc. also do not necessarily mean different.

[0091] In the embodiments of the present application, the words “exemplary” or “for example” are used to mean serving as an example, instance, or illustration. Any embodiment or design presented as “exemplary” or “for example” in the embodiments of the present application should not be interpreted as being more preferred or advantageous than other embodiments or design solutions. Rather, the use of “exemplary” or “for example” is intended to present concepts in a specific way, which is convenient for understanding.

[0092] It can be understood that the "embodiments" mentioned in the specification throughout mean that the specific features, structures or characteristics related to the embodiments are included in at least one embodiment of the present application. Therefore, the various embodiments throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It can be understood that in various embodiments of the present application, the size of the sequence number of each process does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0093] It can be understood that in the present application, "…", "if" and "when" refer to the corresponding processing under certain objective conditions, not the time limit, and do not require judgment action when implementing, nor mean that there are other limitations.

[0094] It can be understood that some optional features in the embodiments of the present application can be implemented independently in some scenarios without relying on other features, such as the scheme currently based on, to solve the corresponding technical problems and achieve the corresponding effects. Also, in some scenarios, it can be combined with other features according to demand. Correspondingly, the device given in the embodiments of the present application can also realize these features or functions, which will not be described here.

[0095] It can be understood that, in this application, "for indicating" can include direct indication and indirect indication, and can also include explicit indication and implicit indication. When describing "the indication information for indicating A" or "the indication information of A", it can include that the indication information directly indicates A or indirectly indicates A, and it does not mean that A is carried in the indication information. The information indicated by certain information is called to be indicated information, and there are many ways to indicate the to-be-indicated information in the specific implementation process, for example, but not limited to, the to-be-indicated information can be directly indicated, such as the to-be-indicated information itself or the index of the to-be-indicated information. The to-be-indicated information can also be indirectly indicated by indicating other information, where the other information and the to-be-indicated information have an association relationship. The to-be-indicated information can also be only indicated a part, and the other part of the to-be-indicated information is known or agreed in advance. For example, the indication of a specific information can be achieved by means of the arrangement order of various information agreed in advance (for example, the protocol stipulates), thereby reducing the indication overhead to a certain extent. At the same time, the common part of each information can be identified and uniformly indicated, so as to reduce the indication overhead caused by separately indicating the same information. In addition, the specific indication method can also be various existing indication methods, for example, but not limited to, the above-mentioned indication methods and various combinations thereof. As can be seen from the above, for example, when multiple information of the same type needs to be indicated, the indication methods of different information can be different. In the specific implementation process, the required indication method can be selected according to the specific needs, and the selected indication method is not limited by the embodiments of the application. In this way, the indication method involved in the embodiments of the application should be understood as covering various methods that can enable the to-be-indicated party to know the to-be-indicated information. The to-be-indicated information can be sent as a whole, or can be sent separately in multiple sub-information, and the sending period or sending time of the sub-information can be the same or different. The specific sending method is not limited in the application. The sending period or sending time of the sub-information can be pre-defined, for example, pre-defined according to the protocol, or configured by the transmitting end device by sending configuration information to the receiving end device.

[0096] In this application, the same or similar parts between various embodiments can be mutually referred to, unless otherwise specified. In this application, the terms and / or descriptions of different embodiments are consistent and can be mutually referred to, unless otherwise specified and logically conflicted. Different embodiments can be combined to form new embodiments according to their inherent logical relationship. The implementation modes of the application described below do not constitute a limitation on the protection scope of the application.

[0097] The technical solutions provided in the present application can be used in various communication systems, which can be a third generation partnership project (3rd generation partnership project, 3GPP) related cellular system, for example, a fourth generation (4th generation, 4G) long term evolution (long term evolution, LTE) system, an evolved LTE system (LTE-Advanced, LTE-A) system, an LTE frequency division duplex (frequency division duplex, FDD) system, an LTE time division duplex (time division duplex, TDD), a universal mobile communication system (universal mobile telecommunication system, UMTS), a 5G new radio (new radio, NR) system, a vehicle to everything (vehicle to everything, V2X) system, a system of LTE and NR hybrid networking, or a device-to-device (device-to-device, D2D) system, a machine to machine (machine to machine, M2M) communication system, an internet of things (internet of things, IoT), a narrowband internet of things (narrow band-internet of things, NB-IoT), and a future communication system.

[0098] Alternatively, the communication system can also be a non-3GPP communication system, for example, an open radio access network (open radio access network, O-RAN or ORAN), a cloud radio access network (cloud radio access network, CRAN), a wireless fidelity (wireless fidelity, WiFi) system, or a communication system fused by multiple communication systems described above, which is not limited in the present application.

[0099] Figure 1 is a schematic diagram of the architecture of a communication system to which embodiments of the present application are applied. Figure 1 shows a schematic diagram of a possible, non-limiting, architecture of a system. As shown in Figure 1, the communication system includes a radio access network (RAN) 100 and a core network (CN) 200. The RAN 100 includes at least one RAN node (e.g. 110a and 110b in Figure 1, collectively referred to as 110) and at least one terminal device (e.g. 120a-120j in Figure 1, collectively referred to as 120). Other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 1), etc., can also be included in the RAN 100. The terminal devices 120 are connected to the RAN nodes 110 wirelessly. The RAN nodes 110 are connected to the core network 200 through wireless or wired means. The core network devices in the CN 200 and the RAN nodes 110 in the RAN 100 can be different physical devices respectively, or can be the same physical device integrating the core network logical functions and the radio access network logical functions.

[0100] The RAN 100 can be a 3GPP related cellular system, such as a 4G, 5G mobile communication system, or a future-oriented evolved system. The RAN 100 can also be an open radio access network (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (Wi-Fi) system. The RAN 100 can also be a communication system integrating two or more of the above systems.

[0101] The RAN nodes 110, which can also be referred to as access network devices, RAN entities, or access nodes, etc., are part of the communication system to help terminal devices to access wirelessly. Multiple RAN nodes 110 in the communication system can be the same type of nodes or different types of nodes. In some scenarios, the roles of the RAN nodes 110 and the terminal devices 120 are relative, e.g. the network element 120i in Figure 1 can be a helicopter or a drone, which can be configured as a mobile base station. For those terminal devices 120j accessing the RAN 100 through the network element 120i, the network element 120i is a base station; but for the base station 110a, the network element 120i is a terminal device. The RAN nodes 110 and the terminal devices 120 are sometimes collectively referred to as communication apparatuses, e.g. the network elements 110a and 110b in Figure 1 can be understood as communication apparatuses with base station functions, and the network elements 120a-120j can be understood as communication apparatuses with terminal functions.

[0102] Terminal device, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), fixed wireless access (FWA), customer premise equipment (CPE), etc. The terminal device is a device including a wireless communication function (providing voice / data connectivity to users). For example, handheld devices with wireless connection functions, vehicle-mounted devices, machine type communication (MTC) terminals, etc. At present, the terminal device can include: mobile phone, tablet computer, notebook computer, palm computer, mobile internet device (MID), wearable device, virtual reality (VR) device, augmented reality (AR) device, wireless terminal in industrial control, wireless terminal in self driving (e.g. drone, vehicle), wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, or wireless terminal in smart home, etc. For example, the wireless terminal in self driving can be a drone, helicopter, or airplane, etc. For example, the wireless terminal in Internet of Vehicles can be a vehicle-mounted device, whole vehicle device, vehicle-mounted module, vehicle, or ship, etc. The wireless terminal in industrial control can be a camera, robot, or mechanical arm, etc. The wireless terminal in smart home can be a television, air conditioner, sweeping machine, sound box, or set-top box, etc. The terminal device can also be a device or module with corresponding communication function accessing the above-mentioned communication system. The terminal device is usually provided with a communication module, circuit or chip for executing corresponding communication functions, and is also configured with program instructions for executing corresponding communication functions.

[0103] It should be noted that the terminal device can be a device or apparatus with a chip, or a device or apparatus integrated with a circuit, or a chip, chip system, module or control unit in the above-mentioned devices or apparatus, which is not limited in the present application. It should be noted that in the present application, when referring to the terminal device, it can refer to the terminal device itself, or the chip, functional module or integrated circuit in the terminal device that completes the method provided in the present application, which is not limited in the present application.

[0104] The RAN is a device deployed in a wireless access network to provide wireless communication functions for terminal devices. The RAN can also be referred to as a RAN entity, an access node, a network node, an access network device, or a communication apparatus, etc.

[0105] Specifically, the RAN can be an access network device of a 3GPP related cellular system. For example, a 4G mobile communication system, a 5G mobile communication system, or a future communication system. The RAN can also be an access network device in an open access network (open RAN, O-RAN or ORAN) or a cloud radio access network (CRAN). Alternatively, the RAN can also be an access network device in a communication system obtained by fusing two or more of the above communication systems.

[0106] The RAN includes, but is not limited to, an evolved Node B (eNB), a radio network controller (RNC), a Node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (for example, home evolved NodeB, or home NodeB, HNB), a baseband unit (BBU), an access point (AP) in a wireless fidelity (WiFi) system, a macro base station, a micro base station, a wireless relay node, a donor node, a radio controller in a CRAN scenario, a wireless backhaul node, a transmission point (TP), or a transmission and receiving point (TRP). The RAN can also be an access network device in a 5G mobile communication system. For example, a next generation NodeB (gNB) in an NR system, a transmission and reception point (TRP), a TP, or one or a group (including multiple antenna panels) of antenna panels of a base station in a 5G mobile communication system. Or, the RAN can also be a network node constituting a gNB or a transmission point. For example, a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and the DU can be separately provided or included in the same network element. For example, a BBU. The RU can be included in a radio frequency device or a radio frequency unit. For example, in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH). Or, the RAN can also be a server, a wearable device, a vehicle or a vehicle-mounted device, etc. For example, in V2X technology, the RAN can be a road side unit (RSU).

[0107] It should be noted that in different systems, the CU (or CU-CP and CU-UP), DU or RU can also have different names, but those skilled in the art can understand their meanings. For example, in an open radio access network (O-RAN or ORAN) system, the CU can also be referred to as an open centralized unit (O-CU) or an open CU, the DU can also be referred to as an open distributed unit (O-DU), the centralized unit control plane (CU-CP) can also be referred to as an open centralized unit control plane (O-CU-CP) or an open CU-CP, the centralized unit user plane (CU-UP) can also be referred to as an open centralized unit user plane (O-CU-UP) or an open CU-UP, and the RU can also be referred to as an open radio unit (O-RU). The specific application is not limited. Any one of the CU, CU-CP, CU-UP, DU and RU in the present application can be realized by a software module, a hardware module, or a combination of a software module and a hardware module.

[0108] As shown in (a) of FIG. 2, the ORAN system includes a core network, an access network device and a UE. Optionally, the ORAN system can also include other components in addition to the components shown in (a) of FIG. 2, and the specific application is not limited.

[0109] The access network device can communicate with the core network (CN) through a backhaul (BH) link. The access network device can communicate with the UE through an air interface. Specifically, the BBU in the access network device communicates with the core network through the backhaul link. The RU in the access network device communicates with at least one UE through the air interface. The BBU communicates with at least one RU through a fronthaul link, and the BBU and the RU can be co-located or not co-located. The BBU includes at least one CU and at least one DU, and the CU and the DU can communicate through at least one midhaul link.

[0110] In a possible implementation, as shown in (b) of FIG. 2, the CU is a logical node carrying radio resource control (RRC), a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, and other control functions of the access network device. The CU can be connected to network nodes such as a core network through some interfaces. For example, an E2 interface. Optionally, the CU can have part of the functions of the core network. The CU (for example, the PDCP layer and / or higher layer of the CU) is connected to the DU (for example, the radio link control (RLC) layer and lower layer of the DU) through some interfaces. For example, an F1 interface. Optionally, the F1 interface can provide control plane (C-Plane) and user plane (U-Plane) functions (for example, interface management, system information management, UE context management, RRC message transmission, and the like). F1AP is an application protocol of the F1 interface, which defines signaling procedures of the F1 in some examples. The F1 interface supports control plane F1-C and user plane F1-U.

[0111] Optionally, as shown in (b) of FIG. 2, the CU can be split into a CU-CP and a CU-UP, where the CU-CP is a logical node carrying the control plane part of PDCP (PDCP-C) layer of RRC layer and packet data convergence protocol layer, used to implement the control plane function of the CU. The CU-CP can interact with a network element in the core network for implementing the control plane function. The network element in the core network for implementing the control plane function can be an access and mobility function network element, such as an access and mobility management (AMF) in a 5G system. The AMF network element is used to be responsible for mobility management in a mobile network, such as location update of a terminal device, registration network of the terminal device, handover of the terminal device, and the like. The CU-UP is a logical node carrying the user plane part of PDCP (PDCP-U) layer of SDAP layer and packet data convergence protocol layer, used to implement the user plane function of the CU. The CU-UP can interact with a network element in the core network for implementing the user plane function. The network element in the core network for implementing the user plane function, for example, a user plane function (UPF) in a 5G system, is used to be responsible for forwarding and receiving data in a terminal device. The above configuration of the CU and the DU is only an example, and in actual application, the CU and the DU can also be configured to have functions according to needs. For example, the CU or the DU can be configured to have more functions of protocol layers, or the CU or the DU can be configured to have partial processing functions of protocol layers. For example, partial functions of the RLC layer and functions of protocol layers above the RLC layer are arranged in the CU, and the remaining functions of the RLC layer and functions of protocol layers below the RLC layer are arranged in the DU. For another example, the functions of the CU or the DU can be divided according to service types or other system requirements, for example, functions that need to meet a relatively short delay requirement in processing time are arranged in the DU, and functions that do not need to meet the delay requirement are arranged in the CU.

[0112] In a possible implementation manner, as shown in (b) of FIG. 2, the DU is a logical node carrying the RLC layer, the medium access control (MAC) layer, the higher physical (Higher PHY) layer, and other functions. In some examples, the DU can control at least one RU. The DU is connected to the RU through some interfaces, which can be a front-haul interface. In some examples, the Higher PHY layer includes part of the PHY layer processing, such as forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, and the like.

[0113] In a possible implementation, as shown in (b) of FIG. 2, the RU is a logical node that carries lower physical layer (Lower PHY) and radio frequency (RF) processing. In some examples, the RU can be a 3GPP transmission reception point (TRP) or a remote radio head (RRH) or other similar functional entity. In some examples, the Low-PHY includes parts of PHY processing, such as fast fourier transform (FFT), inverse fast fourier transformation (IFFT), digital beamforming and filtering, and other processing functions. The RU communicates with one or more UEs over a wireless link.

[0114] The DU and the RU can be co-located or not. The DU and the RU exchange control plane information and user plane information via a lower-layer split-control, user and synchronization (Lower-Layer Split CUS-Plane, LLS-CUS) interface over a fronthaul link. The LLS-CUS can include a lower-layer split control (LLS-C) interface and a lower-layer split user (LLS-U) interface that provide a control plane (C-Plane) and a user plane (U-Plane), respectively. In some examples, the control plane (C-Plane) refers to real-time control between the DU and the RU. The DU and the RU have a lower-layer split management (LLS-M) interface of the fronthaul link to exchange management information, and the management plane (M-Plane) refers to non-real-time management operations between the DU and the RU. In addition, the LLS-M interface can also interact with a management system to exchange information.

[0115] The DU and the RU can cooperate to jointly implement the functions of the PHY layer. One DU can be connected with one or more RUs. The functions of the DU and the RU can be configured in multiple ways according to design. For example, the DU is configured to implement baseband functions, and the RU is configured to implement radio frequency functions. For another example, the DU is configured to implement high-layer functions in the PHY layer, and the RU is configured to implement low-layer functions in the PHY layer or implement the low-layer functions and radio frequency functions. The high-layer functions in the PHY layer can include a part of functions of the PHY layer that are closer to the MAC layer, and the low-layer functions in the PHY layer can include another part of functions of the PHY layer that are closer to the radio frequency side.

[0116] In different systems, the CU (or CU-CP and CU-UP), the DU, or the RU can also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, the CU can also be referred to as an O-CU (open CU), the DU can also be referred to as an O-DU, the CU-CP can also be referred to as an O-CU-CP, the CU-UP can also be referred to as an O-CU-UP, and the RU can also be referred to as an O-RU. For the convenience of description, the CU, the CU-CP, the CU-UP, the DU, and the RU are taken as examples for description in this application.

[0117] It should be noted that the access network device can be a device or apparatus with a chip, or a device or apparatus integrated with a circuit, or a chip, a chip system, a module, or a control unit in the above-mentioned devices or apparatuses, and the specific embodiments are not limited in the present application. It should be noted that in the present application, when referring to the access network device, it can refer to the access network device itself, or refer to the chip, functional module, or integrated circuit in the access network device that completes the method provided in the present application, and the specific embodiments are not limited in the present application.

[0118] Referring to FIG. 3, it is a structure schematic diagram of a communication network element between a terminal device and an access network device in the embodiments of the present application. As shown in FIG. 3(a), the terminal device 10 includes a processor 101, a memory 102, and a transceiver 103, and the transceiver 103 includes a transmitter 1031, a receiver 1032, and an antenna 1033. As shown in FIG. 3(b), the access network device 20 includes a processor 201, a memory 202, and a transceiver 203, and the transceiver 203 includes a transmitter 2031, a receiver 2032, and an antenna 2033. The receiver 1032 can be used to receive the transmission control information through the antenna 1033, and the transmitter 1031 can be used to send the transmission feedback information to the access network device 20 through the antenna 1033. The transmitter 2031 can be used to send the transmission control information to the terminal device 10 through the antenna 2033, and the receiver 2032 can be used to receive the transmission feedback information sent by the terminal device 10 through the antenna 2033. The memory 102 and the memory 202 store computer program codes.

[0119] For the convenience of understanding the technical solutions of the embodiments of the present application, first, a brief introduction of the related technologies of the present application is given as follows.

[0120] 1. Antenna port:

[0121] An antenna port is a logical concept, and one antenna port does not have a direct correspondence with one physical antenna. An antenna port is usually associated with a reference signal, and its meaning can be understood as a transceiving interface on the channel experienced by the reference signal. For a low-frequency system, one antenna port can correspond to one or more antenna elements, and these elements jointly transmit the reference signal, and the receiving end can treat them as a whole and does not need to distinguish these elements. For a high-frequency system, an antenna port can correspond to a beam, and similarly, the receiving end only needs to regard this beam as an interface and does not need to distinguish each element.

[0122] In the embodiments of the present application, the antenna port for transmitting an analog beam can be referred to as an analog antenna port, or simply an antenna port.

[0123] The port group mentioned in the embodiments of the present application can be a plurality of digital ports corresponding to the same analog beam, or the port group can be a plurality of digital port sets corresponding to a plurality of analog beams, or the plurality of digital ports corresponding to the same analog beam are divided into a plurality of subsets, and each subset is a port group. The port group can also be referred to as a digital-analog port group, etc.

[0124] 2. Beam:

[0125] A beam is a kind of communication resource. A beam can be a wide beam, or a narrow beam, or other types of beams. The technology for forming a beam can be referred to as beamforming technology. Beamforming technology refers to adjusting the amplitude and / or phase of a signal so that the radiated signal through an antenna array has a certain directivity, which can achieve higher antenna array gain. Among them, the main lobe of the radiation pattern of the antenna array can be referred to as a beam.

[0126] In the beamforming technology, the amplitude and / or phase adjustment is realized after the signal is filtered by a spatial domain transmission filter. Different spatial domain transmission filters use different spatial domain filter parameters to realize beams in different directions. In the embodiments of the present application, the spatial domain filter parameter can be replaced by a beam, or the spatial domain filter parameter can be replaced by a spatial domain transmission filter. The spatial domain transmission filter can also be referred to as a spatial filter.

[0127] Specifically, the beamforming technology includes a digital beamforming (DBF) technology, an analog beamforming (ABF) technology, and a hybrid digital-analog beamforming (HBF) technology. As shown in (a) of FIG. 4, the DBF technology has multiple digital processing channels, and the phase (or amplitude and phase) of a signal is adjusted in the digital domain by each digital processing channel (for example, the phase is adjusted by a digital to analog converter (DAC)), so that the radiation signal radiated by the antenna has directivity. Therefore, for the DBF technology, the function of the above-mentioned spatial domain transmission filter can be realized by multiple digital processing channels. As shown in (b) of FIG. 4, the ABF technology can simultaneously send signals through an antenna array composed of multiple antenna elements, each antenna element corresponds to a phase shifter, and the phase of the phase shifter corresponding to each antenna element is adjusted to realize that the radiation signal radiated by the antenna array has directivity. Therefore, for the ABF technology, the function of the above-mentioned spatial domain transmission filter can be realized by multiple phase shifters corresponding to multiple antenna elements in the antenna array. As shown in (c) of FIG. 4, the HBF technology is a combination of the ABF technology and the DBF technology, and has multiple digital processing channels and multiple analog phase shifters. Therefore, for the hybrid beamforming technology, the function of the above-mentioned spatial domain transmission filter can be realized by multiple phase shifters corresponding to multiple antenna elements in the antenna array and multiple digital processing channels. However, the present application is not limited thereto, and the above-mentioned spatial domain transmission filter can also be realized by other technologies.

[0128] It can be understood that one or more antenna ports forming a beam can be regarded as an antenna port set or an antenna port group. For ease of description, it is uniformly described below that one beam is formed by one antenna port, and one or more digital ports forming a beam are referred to as a port group.

[0129] 3. Reference signal (RS):

[0130] The reference signal can also be referred to as a pilot, a reference sequence, a reference signal, etc. For ease of description, it is uniformly described below that the reference signal is described. The reference signal can be used for measurement, such as channel measurement or channel estimation.

[0131] The channel measurement involved in this application also includes beam measurement, that is, obtaining beam quality information by measuring reference signals. As an example, the parameters for measuring beam quality include at least one of the following: reference signal received power (RSRP), reference signal received quality (RSRQ), signal-to-noise ratio (SNR), signal-to-interference-plus-noise ratio (SINR) (or can be simply referred to as signal-to-interference ratio). In the embodiments of this application, for the convenience of description, the channel measurement involved can be regarded as beam measurement unless otherwise specified.

[0132] According to LTE or NR protocols, uplink reference signals can include, for example, sounding reference signals (SRS), physical uplink control channel de-modulation reference signals (PUCCH-DMRS), physical uplink shared channel de-modulation reference signals (PUSCH-DMRS), phase tracking reference signals (PTRS), uplink positioning reference signals (UL-PRS), etc. Downlink reference signals can include, for example, synchronization signal blocks (SSB), physical downlink control channel de-modulation reference signals (PDCCH-DMRS), physical downlink shared channel de-modulation reference signals (PDSCH-DMRS), PTRS, channel state information reference signals (CSI-RS), cell reference signals (CRS) in LTE, time / frequency domain tracking reference signals (TRS) in NR, positioning reference signals (PRS), etc.

[0133] It should be understood that the reference signals listed above are only examples and should not constitute any limitation to the present application. The present application does not exclude the possibility of defining other reference signals in future protocols to achieve the same or similar functions.

[0134] 4. Precoding and codebook:

[0135] In a multiple input multiple output (MIMO) communication system, the communication mathematical expression is y = Hx + n, where y is a received signal, H is a MIMO channel, x is a transmitted signal, and n is noise. In a communication system with multiple antennas, the signals of multiple transmitting antennas are superimposed on any receiving antenna, so the method of transmitting signals at the transmitting end affects the performance of the system, and the recovery of the transmitted signal at the receiving end is often complex. In this context, precoding is used to reduce system overhead and maximize the system capacity of MIMO, and to reduce the complexity of the implementation of the receiver to eliminate the influence of the channel. At this time, the mathematical expression is y = HPx + n, and P is a precoding matrix (or vector). In order to simplify the implementation complexity, P can be selected from a predefined matrix (or vector) set, which is called a codebook, and this method is also called a codebook-based transmission method.

[0136] The codebook includes PMI indexes and precoding matrices, each PMI and precoding matrix corresponds to each other, and the corresponding precoding matrix can be determined according to the PMI fed back by the CSI. For the "Release 15" protocol proposed by 3GPP, the precoding matrix to be fed back corresponding to one transmission layer and one subband in the codebook-based feedback can be expressed as W: W = W1W2, the dimension of W is P CSI-RS ×N3, W1 is a wideband precoding matrix, the dimension of which is P CSI-RS ×2L, and W2 is a subband precoding matrix, the dimension of which is 2L × N3. P CSI-RS represents the number of CSI-RS ports, N3 represents the number of subbands or PMIs, and L represents the number of data streams of transmission. The PMI can specifically include feedback of precoding matrices for different transmission layers and different subbands.

[0137] When the number of CSI-RS ports is greater than 2, since the precoding matrix of the codebook, that is, the number of weights, increases in a geometric progression with the number of CSI-RS ports and the number of layers, the codebook is no longer suitable for being listed in an enumerated form, but is generated according to certain rules according to the related parameter configuration, that is, the codebook can be determined according to the related parameter configuration.

[0138] Specifically, the codebook can be determined according to the following three steps: 1. determining a spatial beam set, that is, a set of all weights in a codebook; 2. selecting a wideband beam group, that is, determining a wideband precoding matrix W1; and 3. beam selection and phase quantization adjustment, that is, determining a subband precoding matrix W2.

[0139] For example, the spatial domain beam set can be determined by (N1, N2) and (O1, O2). Wherein, N1 represents the number of logical antenna ports in a certain direction of the same polarization, generally referring to the horizontal direction; N2 represents the number of logical antenna ports in another direction of the same polarization, generally referring to the vertical direction; O1 represents the DFT oversampling multiple in the direction (horizontal direction) where N1 is located; and O2 represents the DFT oversampling multiple in the direction (vertical direction) where N2 is located.

[0140] Take P CSI-RS = 16 as an example, for the same polarization of the logical antenna port number, the combination form in the horizontal direction and the vertical direction can only exist two cases of (4, 2) and (8, 1) as shown in the above table. When N1 takes the value of 4 and N2 takes the value of 2, it means that when beamforming is performed, a total of N1 x N2 weight vectors can be formed in the horizontal dimension of 4 and the vertical dimension of 2. The weight vectors are orthogonal to each other, that is, the beams formed by weighting the weight vectors do not interfere with each other.

[0141] The physical meaning of O1 and O2 is that the number of weight vectors is increased in the horizontal direction and the vertical direction through DFT oversampling, so that more weight vectors can be generated. The values of O1 and O2 also determine the beam density in the horizontal direction and the vertical direction when the antenna form is certain, that is, when N1 and N2 are determined. The greater the values of O1 and O2, the smaller the step size of the beam when beam scanning is performed, and the higher the accuracy, but the cost is that the weight vectors are no longer orthogonal, that is, there is interference between the beams formed by weighting the weight vectors.

[0142] Take 16 CSI-RS ports as an example, as shown in FIG. 5, (N1, N2) takes the value of (4, 2), so the spatial domain beam formed in the horizontal dimension is 4 and the vertical dimension is 2. (O1, O2) takes the value of (4, 4), and each circle point corresponds to a DFT oversampled weight vector. Since different weight vectors can form beams in different directions, each circle point in FIG. 5 corresponds to different DFT beams. Among them, the weight vectors corresponding to the black circle points are orthogonal to each other, that is, the DFT beams corresponding to the black circle points do not interfere with each other; and the weight vectors corresponding to the black circle points and the shaded circle points are no longer orthogonal, that is, there is a certain interference between the DFT beams corresponding to the black circle points and the shaded circle points.

[0143] As shown in FIG. 5, according to the position of each dot in the horizontal direction and the vertical direction, the oversampling DFT beam index can be determined. l represents the DFT beam index in the horizontal direction, and m represents the DFT beam index in the vertical direction, for example, (l, m) = (0, 0) is used to indicate the DFT beam corresponding to the dot marked with "1" in the spatial domain beam shown in FIG. 5.

[0144] 4. Reference signal resource:

[0145] The reference signal resource can be used to configure the transmission attribute of the reference signal, for example, the time-frequency resource position, the port mapping relationship, the power factor, and the scrambling code, etc. The sending end device can send the reference signal based on the reference signal resource, and the receiving end device can receive the reference signal based on the reference signal resource.

[0146] In order to distinguish different reference signal resources, each reference signal resource can correspond to a reference signal resource identifier, for example, a CSI-RS resource indicator (CRI), an SSB resource indicator (SSBRI), and an SRS resource indicator (SRI).

[0147] In the embodiments of the present application, the reference signal quality and the reference signal resource quality are sometimes used alternately, and those skilled in the art should understand their meanings. The reference signal resource quality can be understood as the quality of the reference signal received based on the reference signal resource, or the signal quality measured based on the reference signal resource received.

[0148] 5. Channel information:

[0149] The channel information represents information that can reflect the channel characteristics and the channel quality. As an example, the channel information is at least one of the following: channel state information (CSI), channel time variation information, or channel frequency offset information, etc. In the following, the channel information is mainly taken as an example of CSI, and it can be understood that information that can reflect the channel characteristics and the channel quality are all applicable to the embodiments of the present application.

[0150] Taking the network side obtaining the downlink CSI through the terminal device for uplink feedback as an example, specifically, the network side sends a downlink reference signal to the terminal device, and the terminal device receives the downlink reference signal; since the terminal device knows the transmission information of the downlink reference signal, the terminal device can estimate (or measure) the downlink channel experienced by the downlink reference signal based on the received downlink reference signal, and then the terminal device can generate the CSI based on the measurement, and feed back the CSI to the network side.

[0151] As an example, the CSI includes at least one of a channel quality indicator (CQI), a precoding matrix indicator (PMI), a rank indicator (RI), a CRI, a layer indicator (LI), an RSRP, or a SINR, etc. The signal-to-interference-plus-noise ratio can also be referred to as a signal-to-noise ratio.

[0152] 6, a spatial domain basis and a frequency domain basis:

[0153] In the NR system, the uplink and downlink communication is transmitted using an orthogonal frequency division multiplexing (OFDM) waveform, and the information of a user is modulated onto a plurality of OFDM subcarriers. The channel on each subcarrier can be regarded as a flat channel, and therefore a precoding matrix can be fed back according to the above model on each subcarrier. Generally, the transmission of one user occupies hundreds or even thousands of subcarriers, and in principle, a precoding matrix needs to be fed back for each subcarrier. In the actual system, it is assumed that the channels of adjacent subcarriers are almost the same, and therefore a plurality of subcarriers form a subband (a subband composed of one or more resource blocks) to feed back a precoding together.

[0154] As shown in (a) of FIG. 6, under normal circumstances, the UE needs to feed back a total of F (i.e., port #1~port #F) * R (e.g., R is 2, and the stream number R can include layer 1, layer 2) * N (i.e., subband #1~subband #N) precoding values. Considering a certain quantization accuracy requirement, it is assumed that each precoding value is a quantized complex number using G bits, and the UE needs to feed back F * R * N * G bits at a time. Since precoding codebook feedback needs to be performed every time the channel changes, such a large amount of feedback brings huge overhead to the system, which seriously affects the system performance. Therefore, the 3GPP standard release 15 (R15) and release 16 (R16) have designed codebook feedback compression. In R15, the spatial domain correlation is used to compress the port dimension; in R16, the frequency domain dimension is considered to compress the codebook in the frequency domain. The principle diagram of spatial domain and frequency domain compression is shown in (b) of FIG. 6.

[0155] A vector in spatial or frequency domain is projected into the space composed of DFT basis, and the UE only needs to feed back the index of several main projection directions and the projection amplitude and phase in the direction to the base station. Taking (b) in FIG. 6 as an example, the UE only needs to feed back the DFT basis indexes A and B and the amplitude and phase of the projection (such as projection a and projection b). Wherein, the DFT basis indexes A and B represent the spatial basis and the frequency basis respectively, and the DFT basis C is a non-main projection direction, which can be ignored in the compression process and does not need to be fed back (such as projection c does not need to be fed back). In a low frequency system, the channel usually has sparsity (that is, only a few main projection directions in tens of bases), at this time, the efficiency of this compressed feedback is higher.

[0156] 7. Reference signal configuration

[0157] The reference signal configuration can include two parts of reference signal resource configuration and reference signal reporting configuration. The following takes the channel state information-reference signal (CSI-RS) configuration as an example for introduction.

[0158] The two important parts of the CSI-RS configuration are "CSI-ReportConfig" and "CSI-ResourceConfig". It can be understood that "CSI-ReportConfig" and "CSI-ResourceConfig" are only names adopted for convenience of description, and other names can also be used for naming, and the present application does not limit this.

[0159] Among them, "CSI-ReportConfig" can be used to configure parameters related to CSI reporting, such as "report configuration identifier (ReportConfigId)", "report configuration type (reportConfigType)", "report quantity (reportQuantity)" and the like. "reportConfigId" can be used to mark "CSI-ReportConfig", that is, one "reportConfigId" can correspond to one "CSI-ReportConfig". "reportConfigType" is used to configure the type of reporting, which can be divided into: periodic reporting, semi-persistent reporting and aperiodic reporting. "reportQuantity" can be used to configure the information of reporting, for example, including: CRI, PMI, RI, LI, CQI, RSRP, RSRQ, SNR, SINR and the like. Through different configurations, different information can be reported.

[0160] The "CSI-ResourceConfig" can be used to configure CSI-RS resource related information, such as "CSI resource configuration identifier (CSI-ResourceConfigId)", and the CSI-RS resource used for measurement. Among them, "CSI-ResourceConfigId" is the identifier of "CSI-ResourceConfig", which is used to mark the "CSI-ResourceConfig", and through which the "CSI-ReportConfig" can be associated.

[0161] Exemplarily, through the three high-level parameters "CSI-ResourceConfig"-"CSI-RS resource set (CSI-RS-ResourceSet)"-"CSI-RS-Resource", the access network device can configure one or more CSI-RS resource sets for each terminal device, and each CSI-RS resource set includes one or more CSI-RS resources.

[0162] Each CSI-RS resource can be identified by a "CSI-RS resource identifier (CSI-RS-ResourceId)". Among them, the numbering of the identifiers of the CSI-RS resources in the CSI-RS resource set is not necessarily sequential, such as the identifiers (such as CSI-RS-ResourceId) of the resources in the CSI-RS resource set sorted in the order of beam index include {2 (bit value=010), 4 (bit value=100), 8 (bit value=111), 3 (bit value=011), 5 (bit value=101)}, CSI-RS-ResourceId=2 can correspond to resource index 0, CSI-RS-ResourceId=4 corresponds to resource index 1, CSI-RS-ResourceId=8 corresponds to resource index 2, CSI-RS-ResourceId=3 corresponds to resource index 3, and CSI-RS-ResourceId=5 corresponds to resource index 4. The resource index is used to represent the transmission order of the CSI-RS resource, and it should be understood that the resource index is only an exemplary naming.

[0163] When the terminal device performs measurement reporting based on the above configuration, the CRI in the CSI is used to indicate the resource in the current measurement CSI-RS resource set. For example, if Ks>1 CSI-RS resources are configured in the CSI-RS resource set, CRI k (k is greater than or equal to 0) corresponds to the k+1th CSI-RS resource in the CSI-RS resource set for channel measurement, where k can be the value of CRI, or in other words, k can be the index of the resource indicated by CRI. Specifically, the format of part of the fields in the measurement reporting information can include the contents shown in Table 1 as follows:

[0164] Table 1

[0165] As shown in Table 1, the CRI field is used to carry the CRI for indicating the CSI-RS resource to be reported, and the length thereof is indicates the number of CSI-RS resources in the resource set, indicates the number of SSB resources in the resource set. The terminal device can report one or more of the CRI or the SSBRI. indicates the number of SSB resources in the resource set. The terminal device can report one or more of the CRI or the SSBRI.

[0166] The RSRP can be reported in a differential manner. For the maximum value of the RSRP, 7 bits can be used to quantize and report the absolute value thereof, as indicated by the RSRP field in Table 1. The RSRP indicated by the field corresponds to the reference signal resource corresponding to the reference signal with the maximum received power. Other RSRPs can be quantized by 4 bits to report the differential value between the RSRP and the maximum value, as indicated by the differential RSRP field in the table.

[0167] The above takes the reporting quantities such as PMI, CRI, SSBRI, and RSRP as examples to briefly describe the measurement results, but this should not constitute any limitation on the present application. The present application does not limit the specific content contained in the measurement results and the indication manner thereof.

[0168] In the embodiments of the present application, the CSI can be carried in the uplink control information (UCI) and transmitted through the physical uplink control channel (PUCCH) or the physical uplink shared channel (PUSCH).

[0169] Currently, using more spectrum resources is an important means to improve the capability of wireless channels, and the 6G frequency band has become the next spectrum resource available for wireless communication. Since the higher the frequency band, the greater the signal energy transmission loss under the same transmission distance. In order to overcome this problem, a larger antenna array is usually used on the access network device side to perform weighting processing on the transmitted signal to obtain higher array gain and thus improve the transmission energy of the signal. In order to reduce the implementation cost, the large-scale antenna array on the access network device side usually adopts the HBF architecture, that is, one digital channel drives multiple antenna elements through multiple phase shifters, and the downlink signal transmission of the access network device side usually adopts two-stage weights in the analog and digital domains.

[0170] Under the HBF architecture, one analog beam corresponds to one or more reference signal resources (such as CSI-RS resources), and one reference signal resource is used to send one reference signal. Only when the analog beam is aligned with the communication target, the quality of the communication signal is better. The process of selecting an analog beam from multiple different analog beams is called beam scanning or beam training. Considering that the access network device can adjust the beam direction by adjusting the weighting vector, an exemplary beam scanning method is as follows: the access network device sends multiple reference signals to the terminal device through analog beams in different directions, the terminal device measures multiple reference signal resources (such as CSI-RS resources), and performs CSI reporting corresponding to the resources. According to the CSI fed back by the terminal device, the analog beam with the highest performance adaptation degree can be determined from multiple analog beams.

[0171] Referring to FIG. 7, FIG. 7 is a flow diagram of a CSI measurement reporting method provided by an embodiment of the present application. The method shown in FIG. 7 can include the following steps.

[0172] S701, the access network device sends CSI reporting configuration information to the terminal device. Correspondingly, the terminal device receives the CSI reporting configuration information.

[0173] The CSI reporting configuration information is used to configure the terminal device with the measurement information that needs to be reported and the reference signal resource that needs to be measured by the terminal device.

[0174] In one possible implementation, the access network device can send at least one CSI reporting configuration information to the terminal device through one or more of RRC signaling, medium access control-control element (MAC-CE) signaling, and down control information (DCI) signaling.

[0175] Specifically, the CSI reporting configuration information includes CSI reporting configuration (CSI-ReportConfig) and CSI resource configuration (CSI-ResourceConfig).

[0176] CSI reporting configuration (CSI-ReportConfig) and CSI resource configuration (CSI-ResourceConfig) can refer to the foregoing description, and will not be described herein. As an example, the CSI reporting configuration information includes at least one CSI reporting configuration (CSI-ReportConfig). Each CSI reporting configuration is associated with one or more reference signal resource sets (csi-rs-resourceSet), and each reference signal resource set includes one or more reference signal resources, which can be used for channel measurement or interference measurement. Each reference signal resource includes one or more reference signal ports.

[0177] As an example, the reference signal resource can be a non-zero power channel state information-reference signal resource (NZP CSI-RS resource), a zero power channel state information-reference signal resource (ZP CSI-RS resource), a channel state information-interference measurement resource (CSI-IM resource), or a synchronization signal block resource (SSB resource). Embodiments of the present application are not limited in this regard.

[0178] In a possible implementation, the CSI reporting configuration (CSI-ReportConfig) is associated with a reference signal resource set (CSI-ResourceConfigId) for channel measurement, and the reference signal resource set includes Ks reference signal resources (Ks>1).

[0179] S702, the terminal device performs CSI measurement.

[0180] The terminal device performs receiving measurement on the relevant reference signal resources based on the CSI reporting configuration information, in other words, the terminal device performs measurement through the reference signals received on the relevant reference signal resources to obtain the CSI measurement results (or, also referred to as channel state information) corresponding to each reference signal resource respectively. That is, step S702 can be replaced by: the terminal device receives reference signals on the reference signal resources and performs measurement on the reference signals to obtain the CSI measurement results.

[0181] The reference signal is a downlink reference signal. For example, the reference signal is a CSI-RS, and correspondingly, the reference signal resource is a CSI-RS resource.

[0182] As an example, the CSI reporting configuration configured by the access network device is associated with Ks resources for channel measurement. Ks is a positive integer greater than or equal to 2. The terminal device can select M reference signal resources from the Ks resources for channel state information measurement. M is a positive integer less than or equal to Ks. At this time, the terminal device can obtain the CSI measurement results corresponding to the M reference signal resources respectively (i.e., the signal state information corresponding to the M reference signal resources respectively). The CSI measurement results can include one or more CSI parameters and / or one or more PMI parameters.

[0183] The CSI parameters include one or more of the following parameters: RI, wideband CQI of a first transport block (TB) (or, also referred to as wideband CQI of a first TB), subband differential CQI of the first TB (or, also referred to as subband differential CQI of the first TB), number of selected spatial bases, indicator K of sum of non-zero coefficients of all layers NZ .

[0184] The PMI parameters include one or more of the following parameters: group 0 corresponding to the PMI, group 1 corresponding to the PMI, or group 2 corresponding to the PMI.

[0185] Specifically, the number of selected spatial bases can be a selected L m value, or also can be a selected L value. Wherein m represents the resource indication of the mth reference signal resource in the M reference signal resources, that is, the value of the selected L m value is the number of selected spatial bases corresponding to the mth reference signal resource. For example, the selected L1 value is the number of selected spatial bases corresponding to the first reference signal resource in the M reference signal resources. The selected L value indicates that the number of selected spatial bases corresponding to the M reference signal resources is the same, and is the value of the selected L value.

[0186] When the number of selected spatial domain bases is a selected L value, the selected L value can be indicated by the access network device. At this time, the CSI parameter can not contain the selected L value, that is, at this time, the CSI parameter includes RI, wideband CQI of the first TB, subband difference of the first TB, K NZ one or more of the above.

[0187] Specifically, the group 0 corresponding to the PMI can be understood as: the group 0 contains the PMI field X1, and specifically contains one or more of the following fields: i 1,1 , i 1,2 , i 1,8,l , l = 1, …, v. Wherein, i 1,1 is used to indicate the oversampling offset q1, q2 of the L vectors, i 1,2 is used to indicate the first dimension index n1 and the second dimension index n2 of the L vectors, i 1,8,l is the strongest coefficient indication of the l stream (or layer, rank), or i 1,8,l is the strongest spatial domain base index indication of the l stream (or layer, rank).

[0188] The group 1 corresponding to the PMI can be understood as: the group 1 contains part of the PMI field X2, and specifically contains one or more of the following fields: i 2,3,l , i 1,5 , i 1,6,l , i 2,4,l l＝1,…,v , i 2,5,l l＝1,…,v , i 1,7,l l＝1,…,v , l = 1, …, v.

[0189] The group 2 corresponding to the PMI can be understood as: the group 2 contains another part of the PMI field X2, and specifically contains one or more of the following fields: i 2,4,l l＝1,…,υ , i 2,5,l l＝1,…,v , i 1,7,l l＝1,…,υ , l = 1, …, v.

[0190] Wherein, q1 can be the value of O1, q2 can be the value of O2, n1 can be the value of N1, and n2 can be the value of N2. For specific implementation, please refer to the related description in the foregoing related technology, which will not be repeated here. In addition, i 2,3,l is the amplitude coefficient indication, used to indicate the amplitude coefficients corresponding to the polarization direction 0 and the polarization direction 1, i 1,5 is used to indicate the initial value M initial of the frequency domain base when N3>19, i 1,6,l ​​​​​​to indicate the position of the frequency domain basis,{i 2,4,l} l＝1,…,υ to indicate the amplitude coefficients of the position of nonzero elements,{i 2,5,l} l＝1,…,υ to indicate the phase coefficients of the position of nonzero elements,{i 1,7,l} l＝1,…,υ to indicate the position of the nonzero elements.

[0191] For example, the channel state information of the reference signal resource #1 in the M reference signal resources is one or more of the following: RI = RI#1, wideband CQI of the first TB = wbCQI#1_0, subband differential CQI of the first TB = sbCQI#1_0, selected L m value = L1, K NZ = K NZ #1, PMI field X1 = X1#1, PMI field X2 (group 1) = X2#1 (group 1), PMI field X2 (group 2) = X2#1 (group 2); similarly, the channel state information of the reference signal resource #2 in the M reference signal resources is one or more of the following: RI = RI#2, wideband CQI of the first TB = wbCQI#2_0, subband differential CQI of the first TB = sbCQI#2_0, selected L m value = L2, K N2 = K NZ #2, PMI field X1 = X1#2, PMI field X2 (group 1) = X2#2 (group 1), PMI field X2 (group 3) = X2#2 (group 3).

[0192] S703, the terminal device sends the CSI measurement result to the access network device, and correspondingly, the access network device receives the CSI measurement result from the terminal device.

[0193] The terminal device reports at least one of the following channel state information to the access network device based on the CSI measurement result of S702: M pieces of CSI measurement results corresponding to M reference signal resources selected from Ks configured reference signal resources for channel measurement are reported to the access network device.

[0194] Specifically, the terminal device can report the M CSI measurement results separately, for example, the terminal device reports M times to realize the reporting of the M measurement results. Alternatively, the terminal device can combine the M measurement results in one report, that is, the terminal device only needs to report once, that is, the reporting of M pieces of CSI measurement results can be realized.

[0195] In the scheme that the terminal device reports M CSI measurement results through one report, the report can be divided into part 1 and part 2, and part 1 and part 2 are separately coded (or part 1 and part 2 are separately coded). Part 1 includes M CRIs corresponding to M reference signal resources, and the values of one or more CSI parameters corresponding to the M reference signals respectively. M reference signal resources correspond to M CRIs respectively; part 2 includes the values of one or more PMI parameters corresponding to the M reference signal resources respectively.

[0196] For example, the terminal device can report the CRIk corresponding to the reference signal resource through the CRIk m CRIk represents the CRI corresponding to one of the M reference signal resources. Wherein, k m is a positive integer greater than or equal to 0 and less than or equal to Ks-1; m is a positive integer greater than or equal to 0 and less than or equal to M-1.

[0197] For example, the access network device configures 8 reference signal resources for channel measurement (i.e. CRI#0~CRI#7). The terminal device can select the channel state information of 4 reference signal resources (such as CRI#1, CRI#3, CRI#4, CRI#6) for reporting. At this time, part 1 can include CRIk0~CRIk3, wherein CRIk0~CRIk3 correspond to the 4 reference signal resources (i.e. CRI#1, CRI#3, CRI#4, CRI#6) respectively. For example, CRIk0 can correspond to CRI#1, CRIk1 corresponds to CRI#3, CRIk2 corresponds to CRI#4, and CRIk3 corresponds to CRI#6.

[0198] In one possible implementation, the M CRIs can be represented by a bit bitmap of size Ks bits. That is, each bit in the bit bitmap corresponds to one of the Ks reference signal resources. Wherein, when there is a bit with a value of 1 in the Ks bits, it means that the M CRIs include the CRI corresponding to the reference signal resource corresponding to the bit, that is, the terminal device reports the channel state information (such as one or more CSI parameters and / or one or more PMI parameters) of the reference signal resource.

[0199] For example, when the M CRIs include CRIk0~CRIk3, part 1 can also include the values of the CSI parameters corresponding to CRIk0~CRIk3 respectively. For example, part 1 can include: the RI corresponding to CRIk0, the first TB wideband CQI, the first TB subband difference, the selected L0 value (i.e. the number of selected spatial bases corresponding to CRIk0), K NZone or more of the following: RI corresponding to CRI k0, wideband CQI of the first TB, subband difference of the first TB, selected L0 value (i.e., number of selected spatial bases corresponding to CRI k0), K NZ one or more of the following: RI corresponding to CRI k2, wideband CQI of the first TB, subband difference of the first TB, selected L2 value, K NZ one or more of the following: RI corresponding to CRI k3, wideband CQI of the first TB, subband difference of the first TB, selected L3 value (i.e., number of selected spatial bases corresponding to CRI k3), K NZ one or more of the following.

[0200] In addition, part 2 can include: one or more of the following: group 0, group 1, group 2 corresponding to CRI k0, one or more of the following: group 0, group 1, group 2 corresponding to CRI k1, one or more of the following: group 0, group 1, group 2 corresponding to CRI k2, one or more of the following: group 0, group 1, group 2 corresponding to CRI k3.

[0201] Generally, the arrangement order of the parameters in part 1 is as follows: CRI k0~CRI k3 (such as a bitmap of Ks bits), one or more of the following: RI corresponding to CRI k0, wideband CQI of the first TB, subband difference of the first TB, selected L0 value, K NZ one or more of the following corresponding to CRI k1, one or more of the following: RI corresponding to CRI k1, wideband CQI of the first TB, subband difference of the first TB, selected L1 value, K NZ one or more of the following corresponding to CRI k2, one or more of the following: RI corresponding to CRI k2, wideband CQI of the first TB, subband difference of the first TB, selected L2 value, K NZ one or more of the following corresponding to CRI k3, one or more of the following: RI corresponding to CRI k3, wideband CQI of the first TB, subband difference of the first TB, selected L3 value, K NZ one or more of the following).

[0202] The arrangement order of each parameter in part 2 is: the value of one or more PMI parameters corresponding to CRI k0 (i.e., one or more of group 0, group 1, and group 2 corresponding to CRI k0), the value of one or more PMI parameters corresponding to CRI k1 (i.e., one or more of group 0, group 1, and group 2 corresponding to CRI k1), the value of one or more PMI parameters corresponding to CRI k2 (i.e., one or more of group 0, group 1, and group 2 corresponding to CRI k2), and the value of one or more PMI parameters corresponding to CRI k3 (i.e., one or more of group 0, group 1, and group 2 corresponding to CRI k3). And part 1 is before part 2.

[0203] Therefore, whether the CSI parameters corresponding to the M reference signal resources or the PMI parameters corresponding to the M reference signal resources are arranged in the arrangement order of the M CRIs; so that when the uplink resource is limited, the parameters arranged at the later position are usually considered to be discarded; therefore, in the above example, when the uplink resource is limited, the parameters corresponding to CRI k3 (such as one or more of group 0, group 1, or group 2 corresponding to CRI k3) are preferentially discarded.

[0204] However, if the priority of the reference signal resource corresponding to CRI k3 is high; the parameters corresponding to the high-priority reference signal resource are preferentially discarded; and the parameters corresponding to the low-priority reference signal resource are retained. Therefore, it is necessary to redesign a reporting method of CSI measurement results corresponding to multiple analog beams.

[0205] Therefore, the terminal device can determine channel state information (including M first type parameters and / or M second type parameters corresponding to M resources (i.e., resources corresponding to M reference signals)) corresponding to part of reference signals (M reference signals) in multiple parameter signals according to multiple reference signals (i.e., Ks reference signals), and report the multiple channel state information to the access network device (such as reporting through a CSI report).

[0206] The arrangement rule of each CSI parameter in the M first type parameters can be different from the arrangement rule of each PMI in the M second type parameters. For example, each parameter in the M first type parameters can be arranged in the order of resource indication of the M resources, and the M second type parameters can be arranged in the order of priority of the M resources. For example, the M second type parameters can be arranged in the order of priority from high to low. Therefore, when the M first type parameters are located before the M second type parameters, and the uplink resource is limited, the reporting of the parameters corresponding to the resources with high priority can be preferentially guaranteed; that is, when the uplink resource is limited, the terminal device can still report the channel state information of the resources with high priority.

[0207] The method provided by the embodiments of the present application will be described in detail below with reference to the drawings. The embodiments provided by the present application can be applied to the communication system shown in FIG. 1, without limitation.

[0208] In the following embodiments, terminal devices and access network devices are exemplarily described. The terminal devices can be replaced by constituent components (for example, chips or chip systems or circuits) of the terminal devices, and the access network devices can be replaced by constituent components (for example, chips or chip systems or circuits) of the access network devices.

[0209] Referring to FIG. 8, FIG. 8 is a flow diagram of an information feedback method according to an embodiment of the present application. The method shown in FIG. 8 can include the following steps.

[0210] S801, the access network device sends Ks reference signals to the terminal device; correspondingly, the terminal device receives the Ks reference signals from the access network device. Wherein, Ks is a positive integer greater than 1, or in other words, Ks is a positive integer greater than or equal to 2.

[0211] Exemplarily, under the HBF architecture, the access network device sends Ks analog beams in different directions to the terminal device, each analog beam corresponds to one or more resources (it should be understood that the resources described in the following embodiments all refer to reference signal resources, which are uniformly described here and will not be repeated), and the present application takes each analog beam corresponding to one resource as an example. Correspondingly, the access network device configures Ks resources in the resource set, and sends reference signals through the Ks resources, and the reference signals correspond one by one to the resources.

[0212] The type of the above Ks reference signals may, for example, be CSI-RS, and may also be SSB, PDCCH-DMRS, PDSCH-DMRS, PTRS, CRS in LTE, TRS in NR, downlink positioning signals, etc. The type of the reference signal is not limited by the present application.

[0213] Exemplarily, when the reference signal is CSI-RS, correspondingly, the resource corresponding to the reference signal is CSI-RS resource. For ease of understanding, the following is an exemplary description taking CSI-RS as the reference signal and CSI-RS resource as the resource corresponding to the reference signal.

[0214] In a possible implementation, the above Ks reference signals can be sent in a time-division manner, that is, Ks reference signals are sent on different time domain resources (OFDM symbols), and different reference signals correspond to different antenna ports. Wherein, the antenna port can be an analog antenna port, or a reference signal port group, etc.

[0215] Exemplarily, the implementation of S801 can be that the DU corresponding to the access network device transmits the Ks reference signals through the RU. In the O-RAN system, the implementation of S801 can be that the O-DU corresponding to the access network device transmits the Ks reference signals through the O-RU.

[0216] S802, the terminal device determines a CSI report corresponding to M reference signals in the Ks parameter signals according to the Ks parameter signals. Wherein, M and Ks are positive integers greater than 1.

[0217] Wherein, the CSI report indicates one or more of the following: resource indication of M resources corresponding to the M reference signals, M first type parameters corresponding to the M resources, M second type parameters corresponding to the M resources, and priority order of the M resources; in the CSI report, the M first type parameters are arranged in the order of the resource indication of the M resources, and the M second type parameters are arranged in the priority order of the M resources.

[0218] S803, the terminal device transmits the CSI report to the access network device, and correspondingly, the terminal device receives the CSI report from the access network device.

[0219] Exemplarily, the CSI report can be carried in at least one of the following: physical uplink control channel (PUCCH), physical uplink shared channel (PUSCH).

[0220] Exemplarily, the CSI report is contained in a CSI field, which can be carried in UCI and transmitted through PUCCH or PUSCH.

[0221] In the following embodiments, the CSI field can be understood as: a field for carrying the CSI report. Therefore, the arrangement order of the M first type parameters in the CSI report can also be understood as: the order of the M first type parameters in the CSI field; similarly, the arrangement order of the M second type parameters in the CSI report can also be understood as: the order of the M second type parameters in the CSI field.

[0222] Optionally, the resource indication of the M resources can be M CRIs. Wherein, the M CRIs correspond to the M resources respectively. Therefore, it can also be considered that each of the M resources can be represented by a CRI.

[0223] It should be understood that, unless otherwise specified, "corresponding" in the present application means "one-to-one corresponding"; for example, M CRIs correspond to M resources respectively; that is, each CRI corresponds to one resource; this is uniformly stated here, and will not be repeated.

[0224] To pass CRIk m Taking the CRI corresponding to one of the M resources as an example, that is, the M CRIs include CRIk0 to CRIk M-1 Among them, k m is a positive integer greater than or equal to 0 and less than or equal to Ks-1; m is a positive integer greater than or equal to 0 and less than or equal to M-1.

[0225] Specifically, CRIk0~CRIk M-1 The M resources can be assigned to the Ks resources according to their order of arrangement. For example, the Ks resources include CRI#0 to CRI#7, and the M resources include CRI#1, CRI#3, CRI#4, and CRI#6. In this case, CRIk0 can correspond to CRI#1, CRIk1 to CRI#3, CRIk2 to CRI#4, and CRIk3 to CRI#6.

[0226] Or, CRIk0~CRIk M-1 The M resources can be assigned to each other according to their priority order. For example, Ks resources include CRI#0 to CRI#7, and M resources include CRI#1, CRI#3, CRI#4, and CRI#6. If the priorities of the M resources from highest to lowest are CRI#3, CRI#6, CRI#4, and CRI#1; when assigned according to priority from highest to lowest, CRIk0 can correspond to CRI#3, CRIk1 to CRI#6, CRIk2 to CRI#4, and CRIk3 to CRI#1. When assigned according to priority from lowest to highest, CRIk0 can correspond to CRI#1, CRIk1 to CRI#4, CRIk2 to CRI#6, and CRIk3 to CRI#3.

[0227] For ease of understanding, the following text will use CRIk0 to CRIk. M-1 When assigning M resources according to their priority order, they are respectively assigned in descending order of priority as CRIk0 to CRIk. M-1 An exemplary description of the correspondence between M resources. It should be understood that when CRIk0~CRIk M-1 When M resources are assigned priority and correspond to each other, the order of the M resource indications (i.e., CRIk0~CRIk) is as follows: M-1 The order of arrangement of the M resources is the priority order of the M resources; at this time, the CSI report indicates one or more of the following: resource indications for the M resources, M first-class parameters, or M second-class parameters.

[0228] Optionally, the M first-class parameters corresponding to the M resources can be understood as follows: the M first-class parameters include one or more CSI parameters, wherein each of the one or more CSI parameters includes M values, and each of the M values ​​corresponds to a CRI, and the CRI is the CRI corresponding to the M resources.

[0229] For example, CSI parameters may include one or more of the following: RI, the broadband CQI of the first TB, the subband differential CQI of the first TB, the number of selected spatial bases, or K. NZ .

[0230] Optionally, the CSI parameters corresponding to the CRI of any one of the M resources include: the RI corresponding to the CRI of that resource (or, the CRI of that resource can also be simply referred to as the first CRI), the broadband CQI of the first TB corresponding to the CRI of that resource, the sub-band differential CQI of the first TB corresponding to the CRI of that resource, the number of selected spatial bases corresponding to the CRI of that resource, or the K corresponding to the CRI of that resource. NZ One or more of them.

[0231] Alternatively, the CSI parameter corresponding to the CRI of any one of the M resources includes: the value of the CRI corresponding to that resource among the M values ​​of RI, the value of the CRI corresponding to that resource among the M values ​​of the first TB of broadband CQI, the value of the CRI corresponding to that resource among the M values ​​of the first TB of subband differential CQI, the value of the CRI corresponding to that resource among the M values ​​of the number of selected spatial bases, or K NZ One or more of the values ​​corresponding to the CRI of a resource from the M possible values.

[0232] Specifically, the M values ​​of RI are CRIk0 to CRIk. M-1 The corresponding RIs are as follows: The M possible values ​​of RI include: the RI corresponding to CRIk0 (or the RI associated with the resource indicated by CRIk0), the RI corresponding to CRIk1 (or the RI associated with the resource indicated by CRIk1), ..., CRIk... --1 The corresponding RI (or, in other words, CRIk) --1 The resource is associated with the indicated resource (RI). Similarly, the M values ​​of the first TB of broadband CQI are CRIk0 to CRIk. M-1 The corresponding bandwidth CQI for the first TB; that is, the M values ​​of the bandwidth CQI for the first TB include: the bandwidth CQI for the first TB corresponding to CRIk0, the bandwidth CQI for the first TB corresponding to CRIk1, ..., CRIk M-1The corresponding first TB of broadband CQI. The M values ​​of the first TB of subband differential CQI are CRIk0 to CRIk. M-1 The corresponding subband differential CQIs of the first TB; that is, the M values ​​of the subband differential CQI of the first TB include: the subband differential CQI of the first TB corresponding to CRIk0, the subband differential CQI of the first TB corresponding to CRIk1, ..., CRIk M-1 The corresponding first TB sub-band differential CQI. The M values ​​of the number of selected spatial basis layers are CRIk0 to CRIk. M-1 The number of selected spatial bases corresponding to each; that is, the M values ​​for the number of selected spatial bases include: the number of selected spatial bases corresponding to CRIk0, the number of selected spatial bases corresponding to CRIk1, ..., CRIk M-1 The number of corresponding selected spatial bases. K NZ The M values ​​are CRIk0 to CRIk. M-1 The corresponding K NZ That is, K NZ The M possible values ​​include: K corresponding to CRIk0 NZ K corresponding to CRIk1 NZ ..., CRIk M-1 Corresponding K NZ In other words, CRIk0~CRIk M-1 CRIk in m Corresponding RI, the first TB of broadband CQI, the first TB of subband differential CQI, the number of selected spatial bases, or K NZ One or more of them.

[0233] For example, the implementation of the spatial basis can be referred to the description in the related technologies mentioned above, and will not be repeated here. Optionally, the M second-type parameters corresponding to the M resources can be understood as follows: the M second-type parameters include one or more PMI parameters, wherein each of the one or more PMI parameters includes one or more values, and each of the one or more values ​​corresponds to one of the M resources, and each of the one or more values ​​corresponds to a CRI, and the CRI is the CRI corresponding to one of the M resources.

[0234] For example, the number of the one or more values ​​is a positive integer less than or equal to M; when one of the PMI parameters includes M values, the M values ​​correspond one-to-one with the M resources.

[0235] For example, the PMI parameter includes one or more of the following: group 0 corresponding to PMI, group 1 corresponding to PMI, or group 2 corresponding to PMI, where group 1 corresponding to PMI is related to the number of selected spatial bases.

[0236] wherein, the group 0 corresponding to the PMI can be understood as: the group 0 contains the PMI field X1, and the PMI field X1 contains one or more of the following fields:i 1,1 , i 1,2 , i 1,8,l , l = 1, …, v. The group 1 corresponding to the PMI can be understood as: the group 1 contains a part of the PMI field X2, and the part of the PMI field X2 contains one or more of the following fields:i 2,3,l , i 1,5 , i 1,6,l , i 1,9 , i 2,4,l , i l＝1,…,v , i 2,5,l , i l＝l,…,υ , i 1,7,l , i l＝1,…,v , l = 1, …, v. The group 2 corresponding to the PMI can be understood as: the group 2 contains another part of the PMI field X2, and the another part of the PMI field X2 contains one or more of the following fields:i 2,4,l , i l＝1,…,v , i 2,5,l , i l＝1,…,υ , i 1,7,l , i l＝1,…,v , l = 1, …, v.i 1,9 is used to indicate whether a plurality of beams (i.e., beams carried by M resources respectively) share a frequency domain basis, or can also indicate an offset value of the frequency domain basis of the beam relative to the frequency domain basis of the reference beam.

[0237] Specifically, the implementation of each parameter contained in the PMI field X1 and the PMI field X2 can refer to the related description in the related technology described above, and will not be repeated here.

[0238] For example, the group 1 corresponding to the PMI and the number of selected spatial domain bases can be understood as: the implementation of the group 1 corresponding to the PMI is different under different implementations of the number of the selected spatial domain bases. Since there are three implementations of the number of the selected spatial domain bases, accordingly, the group 1 corresponding to the PMI has the following three implementations. Specifically, the implementation of the group 1 corresponding to the PMI can refer to the related description in the following Tables 22-30, and will not be repeated here.

[0239] Optionally, the value of the PMI parameter corresponding to the first resource includes: a value corresponding to the CRI of the first resource in one or more values of the group 0 corresponding to the PMI, a value corresponding to the CRI of the first resource in one or more values of the group 1 corresponding to the PMI, and / or a value corresponding to the CRI of the first resource in one or more values of the group 2 corresponding to the PMI.

[0240] Specifically, one or more values ​​for group 0 of the PMI include: group 0 of the PMI corresponding to CRIk0, group 0 of the PMI corresponding to CRIk1, ..., CRIk M-1 One or more values ​​from group 0 of the corresponding PMI. Similarly, one or more values ​​from group 1 of the corresponding PMI include: group 1 of the PMI corresponding to CRIk0, group 1 of the PMI corresponding to CRIk1, ..., CRIk M-1 One or more values ​​from group 1 of the corresponding PMI. One or more values ​​from group 2 of the corresponding PMI include: group 2 of the PMI corresponding to CRIk0, group 2 of the PMI corresponding to CRIk1, ..., CRIk M-1 One or more items from group 2 of the corresponding PMI. That is, CRIk0 to CRIk. M-1 CRIk in m It corresponds to one or more of the following groups: Group 0, Group 1, or Group 2 of the PMI.

[0241] Optionally, the value of the CRI corresponding to the first resource in one or more values ​​of group 0 corresponding to PMI is located before the value of the CRI corresponding to the first resource in one or more values ​​of group 1 corresponding to PMI; and the value of the CRI corresponding to the first resource in one or more values ​​of group 1 corresponding to PMI is located before the value of the CRI corresponding to the first resource in one or more values ​​of group 2 corresponding to PMI.

[0242] For example, the order of the PMI parameters among the M second-class parameters can be found in the relevant descriptions in Tables 22A to 34B below, and will not be repeated here.

[0243] Optionally, the order of the resource indicators for the M resources refers to: CRIk0~CRIk M-1 The order of arrangement is as follows: CRIk0, CRIk1, ..., CRIk M-2 、CRIk M-1 .

[0244] Therefore, the M Type I parameters, arranged in the order of the resource indications of the M resources, can be understood as follows: one or more CSI parameters (including the M values ​​of each CSI parameter) among the M Type I parameters are arranged in the CSI field according to CRIk0 to CRIk. M-1 The items are arranged in the order listed.

[0245] For example, a resource indicator may be called a resource identifier, a resource index, or other names, which are not limited in this application.

[0246] Similarly, the M second-type parameters are arranged in the priority order of the M resources, which can be understood as that one or more PMI parameters (including one or more values of each PMI parameter) in the M second-type parameters are arranged in the priority order of part or all of the M resources in the CSI field. For example, when the priority order of the M resources is the priority order of the M resources from high to low, correspondingly, one or more PMI parameters in the M second-type parameters are arranged in the priority order of the M resources from high to low in the CSI field. Or, when the priority order of the M resources is the priority order of the M resources from low to high, correspondingly, one or more PMI parameters in the M second-type parameters are arranged in the priority order of the M resources from low to high in the CSI field.

[0247] Based on the foregoing related art, it can be understood that one or more CSI parameters and / or one or more PMI parameters corresponding to a resource (or a CRI corresponding to the resource, such as CRIk m ) are channel state information corresponding to the resource (or the CRI corresponding to the resource); therefore, the M first-type parameters and / or the M second-type parameters can also be considered as channel state information corresponding to the M resources.

[0248] For example, the CRI corresponding to the resource can also be referred to as the CRI of the resource, or the CRI associated with the resource, or the CRI having a mapping relationship with the resource, or other names, which are not limited in the present application. Taking CRIk m as an example, the resource corresponding to CRIk m can also be understood as a resource having a mapping relationship with CRIk m , or a resource of which the CRI is CRIk m .

[0249] It should be understood that in the present application, sometimes "CRI corresponding to a resource" and "CRI of a resource" are used interchangeably, and in the absence of special instructions, the meanings of "CRI corresponding to a resource" and "CRI of a resource" are the same, that is, the CRI having a mapping relationship with the resource, which is uniformly described here and will not be repeated.

[0250] For example, the channel state information corresponding to the M resources can be implemented based on the following two cases:

[0251] Case 1: the value of Ks is greater than or equal to the value of M. Or, Ks resources are greater than or equal to M resources. That is, the M resources are part or all of the Ks resources.

[0252] Optionally, in the case, the terminal device determines the CSI report corresponding to the M reference signals in the Ks parameter signals according to the Ks parameter signals, including: the terminal device determines the CSI report according to the M reference signals.

[0253] For example, since the M resources are part or all of the Ks resources, each of the M reference signals is carried on one of the M resources (or also referred to as a reference signal resource); that is, each of the M reference signals corresponds to one of the M resources. Thus, the terminal device can determine the channel state information (which can include one or more CSI parameters and / or one or more PMI parameters) corresponding to each of the M reference signals based on the reference signal; thereby obtaining the channel state information corresponding to the M resources (i.e., M first type parameters and / or M second type parameters).

[0254] In the second case, the value of Ks is less than the value of M. Or, Ks resources are less than M resources. That is, the Ks resources are part of the M resources.

[0255] Optionally, in the second case, step S802 can be replaced by: the terminal device determines the CSI report corresponding to the M resources according to the Ks parameter signals. Wherein, the CSI report includes the channel state information of the Ks reference signals.

[0256] For example, the terminal device can determine the channel state information of the Ks reference signals (which can include one or more CSI parameters and / or one or more PMI parameters, each CSI parameter (and / or PMI parameter) includes Ks values corresponding to the Ks reference signals) according to the Ks reference signals; further, according to the channel state information of the Ks reference signals and the weight of the beam corresponding to the M resources, determine the channel state information corresponding to the M resources (i.e., M first type parameters and / or M second type parameters).

[0257] Taking the channel state information of the Ks reference signals (or the Ks channel state information corresponding to the Ks resources) as A0, A1,…,A Ks-1 , and the weight of the beam corresponding to the M resources as m =[σ m,0 ,σ m,1 ,…,σ m,Ks-1 , for example, at this time, the mth channel state information in the M channel state information corresponding to the M resources and the Ks channel state information satisfy the following relationship (1):

[0258] Wherein, H mrepresents the mth channel state information (i.e., the value of one or more CSI parameters corresponding to the mth resource, and / or, the value of one or more PMI parameters corresponding to the mth resource); wherein, m=0, 1, …, M-1; k=0, 1, …, Ks-1.

[0259] Optionally, the weight of the beam corresponding to the M resources (i.e., σ m ) can be indicated by the access network device. For example, the access network device can send σ m to the terminal device through any one of RRC signaling, MAC-CE signaling, and DCI signaling. For example, σ m may be carried in the same or different signaling as the CSI reporting configuration information, which is not limited in the embodiments of the present application. Specifically, the implementation of the CSI reporting configuration information can refer to the related description of the following embodiments, which will not be described here.

[0260] For the convenience of understanding, in the following, an exemplary description is given by taking part or all of the Ks resources as the M resources (i.e., the Ks resources include the M resources).

[0261] The information feedback method provided by the embodiments of the present application can be used for the terminal device to determine the channel state information (including the M first type parameters and / or the M second type parameters corresponding to the M resources (i.e., the resources corresponding to the M reference signals)) corresponding to part of the reference signals (i.e., the M reference signals) in the plurality of parameter signals according to the plurality of reference signals (i.e., the Ks reference signals), and report the plurality of channel state information to the access network device (e.g., through the CSI report).

[0262] The arrangement rule of each CSI parameter in the M first type parameters can be different from the arrangement rule of each PMI in the M second type parameters. For example, each parameter in the M first type parameters can be arranged in the order of the resource indication of the M resources, and the M second type parameters can be arranged in the order of the priority of the M resources. For example, the M second type parameters can be arranged in the order of the priority from high to low. Thus, when the M first type parameters are located before the M second type parameters, and the uplink resource is limited, the reporting of the parameters corresponding to the resources with higher priority can be guaranteed first; that is, when the uplink resource is limited, the terminal device can still report the channel state information of the resources with higher priority.

[0263] The above is the overall description of the information feedback method provided by the present application, and the following will introduce the “M resources” involved in the above embodiments in detail.

[0264] As an example, the value of M can be indicated by the access network device; therefore, the terminal device can determine the M resources according to the value of M and the Ks resources.

[0265] Exemplarily, the access network device can send the value of M to the terminal device through any one of RRC signaling, MAC-CE signaling, and DCI signaling.

[0266] For example, the value of M can be carried in the same or different signaling as the CSI reporting configuration information, which is not limited by the embodiments of the present application. Specifically, the implementation of the CSI reporting configuration information can refer to the related description of the following embodiments, which will not be described here.

[0267] Specifically, the value of Ks can be any positive integer greater than 1; for example, Ks can be any one of 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16, 24. In a communication system, CSI reporting can be implemented under multiple codebook types. The codebook types include Type I (Type I) and Type II (Type II). Type I can include but is not limited to DFT codebook Type I (Type I codebook), single antenna array codebook Type I (Type I single-panel codebook), etc.; Type II can include but is not limited to DFT codebook Type II, enhanced codebook Type II (Enhanced Type II Codebook), enhanced port selection codebook Type II (Enhanced Type II Port Selection Codebook), etc. Therefore, it can also be considered that under different codebook types, the value of Ks can be any positive integer greater than 1, for example, Ks can be any one of 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16, 24.

[0268] For example, in Type I, Ks can be any one of 2, 3, 4, 5, 6, 7, 8, that is, Ks is a positive integer greater than 1 and less than or equal to 8; for another example, in Type II, Ks can be any one of 2, 3, 4, that is, Ks is a positive integer greater than 1 and less than or equal to 4. At this time, it can also be considered that when the codebook type is set to Type I (such as Type I single-panel codebook), 1 < Ks ≤ 8; when the codebook type is set to Type II, 1 < Ks ≤ 4.

[0269] In addition, based on the foregoing, the value of Ks can be greater than or equal to the value of M (see case one above for details), or the value of Ks can be less than the value of M (see case two above for details), therefore, the value of M can be any positive integer. That is, under different codebook types, the value of M can be any positive integer.

[0270] For example, in Type I, M can be any one of 1, 2, 3, 4, i.e., M ∈ {1, 2, 3, 4}; in Type II, M can be any one of 1, 2, i.e., M ∈ {1, 2}. At this time, it can also be considered that when the codebook type is set to Type I (such as Type I single-panel codebook), M ∈ {1, 2, 3, 4}; when the codebook type is set to Type II (such as Enhanced Type II Codebook, or Enhanced Type II Port Selection Codebook), M ∈ {1, 2}.

[0271] In combination with the above two examples, it can be known that in Type I (such as Type I single-panel codebook), 1 < Ks≤ 8, and M ∈ {1, 2, 3, 4}; in Type II, 1 < Ks≤ 4, and M ∈ {1, 2}. Therefore, it can also be considered that when the codebook type is set to Type I, M ∈ {1, 2, 3, 4}, and 1 < Ks≤ 8; when the codebook type is set to Type II (such as Enhanced Type II Codebook, or Enhanced Type II Port Selection Codebook), M ∈ {1, 2}, and 1 < Ks≤ 4.

[0272] For another example, in the case where the value of Ks is greater than or equal to the value of M, when the value of Ks is 8, the value of M can be any one of 1, 2, 3, 4, 5, 6, 7, 8. Or, when the value of Ks is 4, the value of M can be any one of 1, 2, 3, 4.

[0273] Generally, the value of Ks supported in Type I is greater than or equal to the value of Ks supported in Type II; similarly, the value of M supported in Type I is greater than or equal to the value of M supported in Type II. For example, in Type I, the value of Ks can be 8, at this time, the value of M can be any one of 1, 2, 3, 4, 5, 6, 7, 8; such as the value of M can be 4. In Type II, the value of Ks can be 8 or 4, wherein when the value of Ks is 8, the value of M can be any one of 1, 2, 3, 4, 5, 6, 7, 8; such as the value of M can be less than or equal to 4; when the value of Ks is 4, the value of M can be any one of 1, 2, 3, 4, such as the value of M can be 2.

[0274] It should be understood that, in the embodiments of the present application, some values of Ks are exemplarily listed, and the values of Ks do not only include the values exemplarily listed in the embodiments of the present application. In fact, the values of Ks can also be any positive integer greater than 1, which is not limited in the present application.

[0275] As another example, the access network device can indicate a value Y. Thus, the terminal can determine the value of M according to Y. Wherein, Y is a positive integer greater than M. That is, the terminal device can select any positive integer less than Y as the value of M. For example, the value of Y can be 8, and the value of M can be any of 1, 2, 3, 4, 5, 6, 7.

[0276] Specifically, in this example, some values of Y and M are exemplarily listed, and the values of Y and M can also be other values except the above examples, which is not limited in the present application. It is only required that the value of Y is greater than the value of M, and Y and M are both positive integers.

[0277] In combination with the above two examples, optionally, the terminal device can determine the M resources in the following two possible implementation manners:

[0278] In the first possible implementation manner, the M resources are determined by the terminal device autonomously.

[0279] Optionally, the terminal device can randomly select M resources from the Ks resources, or can select the M resources with the highest priority in the Ks resources according to the priority order of the Ks resources. Or, the terminal device can also select the M resources by any other possible manner, which is not limited in the present application.

[0280] In the second possible implementation manner, the terminal device can determine the M resources according to the M resources indicated by the access network device. R Wherein, M R is a positive integer less than or equal to M.

[0281] Specifically, as shown in FIG. 9, before step S802, the information feedback method can further include step S800:

[0282] S800, the access network device sends first indication information to the terminal device, and correspondingly, the terminal device receives the first indication information from the access network device. Wherein, the first indication information indicates M R resources.

[0283] Exemplarily, the first indication information can include resource indication of the M R resources, or the first indication information can include group index of a group composed of the M R resources, or the first indication information can also indicate the M RAny parameter that exists a corresponding relationship between the resources is not limited in the present application.

[0284] For example, M R may be a positive integer greater than or equal to 1 and less than or equal to M; that is, M R = 1, 2, …, M. Taking M R = 4 as an example, M R may be any value in the set {1, 2, 3, 4}, {1, 2, 3}, {1, 2}, {1}, or an empty set. That is, under different codebook types, M R may be any value in the set {1, 2, 3, 4}, {1, 2, 3}, {1, 2}, {1}, or an empty set.

[0285] For example, in Type I, M R may be any value in the set {1, 2}; at this time, it can also be considered that M R ∈ {1, 2}. For another example, in Type II, M R may be a value in the set {1}; at this time, it can also be considered that M R ∈ {1}.

[0286] For another example, in DFT codebook Type I (or single antenna array codebook Type I), M R may be any value in the set {1, 2, 3, 4}, {1, 2, 3}, {1, 2}, {1}, or an empty set. In DFT codebook Type II (or single antenna array codebook Type II), M R may be any value in the set {1, 2}, {1}, or an empty set. When M R is an empty set, it means that the access network device does not indicate M R resources to the terminal device.

[0287] It should be understood that the above taking M R as an example with a value of 4 exemplarily introduces the value of M R ; when the value of M is other values (i.e., the value of M shown above), the implementation of the value of M R is similar to the implementation of the value of M R when the value of M is 4; for example, when the value of M is 8, the value of M R may be any value in the set {1, 2, …, 8}. Details are not described herein.

[0288] Optionally, when M R is equal to M, MR There are M resources, therefore, after receiving the first instruction information, the terminal device will assign the indicated M resources. R The number of resources can be determined to be M. When M R When the value is less than M, after receiving the first indication information, the terminal device still needs to divide the value by M from the Ks resources. R Ks-M outside of resources R Select MM from the resources R One resource, thus making M R One resource and the MM R The resource is determined to be M resources.

[0289] For example, when M R When the value is less than M, the terminal device can operate within the range of Ks-M. R Randomly select MM from the resources R One resource, or you can follow Ks-M R Prioritize the resources and select Ks-M. R The highest priority MM among all resources R One resource. Alternatively, the terminal device can select MM in any other possible way. R This application does not restrict the use of any resources.

[0290] Optional, M R The resource can be randomly selected by the access network device from Ks resources, or M R One resource can be M, which is the highest priority among Ks resources. R One resource, or M R The resource can be determined by the access network device in any other possible way, and the embodiments of this application are not limited thereto.

[0291] For example, the first indication information may include M R A resource indication for a resource. Alternatively, the first indication information can be carried in the DCI, in which case the first indication information indicates M. R The resource can be understood as: the first indication information is used to trigger M. R One resource; that is, access network devices can be pre-configured with M. R One resource; when the access network device sends the first indication information, it indicates that the M R One resource was activated.

[0292] Specifically, access network devices can be pre-configured with multiple sets of resources, each set including M R One resource; therefore, the first indication information may include a group index of one of the multiple groups of resources, and thus, the M corresponding to that group index RThe M resources are indicated by the access network device to the terminal device R The specific implementation of the multiple groups of resources is similar to the implementation of the Ks groups of resources, and details can be referred to related descriptions in the following embodiments.

[0293] Optionally, the first indication information can be carried in the CSI reporting configuration information; or, it can also be considered that the CSI reporting configuration information includes the M R resources; at this time, the step S800 is executed before the step S801. Further, it can also be considered that the first indication information and the CSI reporting configuration information are carried in the same signaling. In addition, the CSI reporting configuration information can also include reference signal resource configuration information and reference signal reporting configuration information.

[0294] Exemplarily, the implementation of the reference signal resource configuration information and the reference signal reporting configuration information can be referred to the descriptions in the related technologies above, and details are not described herein again.

[0295] Specifically, the first indication information can be located in the reference signal resource configuration information, that is, the access network device can indicate the first indication information through the reference signal resource configuration information. It can be understood that the reference signal resource configuration information is usually used to indicate resources (that is, Ks resources) for carrying Ks reference signals, that is, the reference signal resource configuration information is used to indicate the Ks resources. Therefore, it can also be considered that the reference signal resource configuration information is used to indicate the Ks resources and the M R resources.

[0296] Optionally, the first indication information and the CSI reporting configuration information can also be located in different signaling; at this time, before the step S801, the access network device can also send the CSI reporting configuration information to the terminal device. Specifically, the implementation of the CSI reporting configuration information can be referred to the related descriptions above, and details are not described herein again.

[0297] In some implementation manners, before the step S800, the terminal device reports capability information to the access network device, and through the capability information, the value of M supported by the terminal device can be implicitly indicated. Exemplarily, the terminal device can report RI in the historical CSI report, and the RI reflects the maximum number of data streams allowed to be transmitted under the current channel condition, and the value of the RI is negatively related to the value of M supported by the terminal device, for example: the terminal device reports RI≤4 in the historical CSI, which is equivalent to implicitly indicating that the value of M supported by the terminal device is 6, and the terminal device reports 4<RI≤8 in the historical CSI report, which is equivalent to indicating that the value of M supported by the terminal device is 4.

[0298] Combining the two possible implementation methods described above, after identifying M resources, the terminal device can report the resource indications (i.e., M CRIs) of those M resources to the access network device. Specifically, the terminal device can report the M CRIs to the access network device in the following three ways, i.e., the CSI report indicating the resource indications of M resources includes the following three implementation methods:

[0299] Method 1: The terminal device reports the CRI corresponding to each of the M resources.

[0300] Optionally, the M CRIs may include CRIk0 to CRIk. M-1 That is, the CSI report includes CRIk0 to CRIk. M-1 In other words, the CSI report indicates resource indications for M resources, including: the CSI report includes CRIk0 to CRIk. M-1 .

[0301] Optionally, in mode one, the M resources can be determined autonomously by the terminal device; or, they can be indicated by the access network device (i.e., the M resources indicated by the first indication information). R There are M resources, where M is the number of resources. R (equal to M); or, it may also include M as indicated by the access network device. R MM allows for independent selection of resources and terminal devices. R One resource, at this time, M R Less than M.

[0302] Specifically, a CSI report may include the content shown in Table 2 below; that is, the CSI fields may include the content shown in Table 2 below:

[0303] Table 2

[0304] For example, when M resources are determined autonomously by the terminal device or M resources are indicated by the access network device (i.e., the first indication information indicates M...) R One resource, and M R When M equals M); or, when M out of M resources R Each resource is indicated by the access network device, and CRIk0~CRIk M-1 The M resources are arranged in the Ks resources according to their order, and each M resource corresponds to a specific resource, CRIk0~CRIk. M-1 The implementation can be referred to the relevant descriptions in the above embodiments, and will not be repeated here.

[0305] When M out of M resources R Each resource is indicated by the access network device, and CRIk0~CRIk M-1When the terminal device is assigned a priority order to each of the M resources, it can assign the M resources accordingly. R One resource and its selected MM R The resources are sorted according to priority, thus setting CRIk0 to CRIk... M-1 These correspond to the M resources respectively. The M resources are: CRI#0~CRI#4, M... R Taking resources CRI#1 and CRI#3 as examples; if the M R The resource is randomly assigned by the access network device. For example, the priorities of CRI#0 to CRI#4, from high to low, are: CRI#0, CRI#3, CRI#4, CRI#1. In this case, CRIk0 can correspond to CRI#0, CRIk1 can correspond to CRI#3, CRIk2 can correspond to CRI#4, and CRIk3 can correspond to CRI#1. If this M R The first M resources are the highest priority resources selected by the access network device from Ks resources. R Resources, such as CRI#0 to CRI#4, have the following priorities from highest to lowest: CRI#1, CRI#3, CRI#0, and CRI#4. CRIk0 can correspond to CRI#1, CRIk1 can correspond to CRI#3, CRIk2 can correspond to CRI#0, and CRIk3 can correspond to CRI#4. In this case, M can also be considered... R M corresponding to each resource R CRI (i.e.) ) Located in MM R MM corresponding to each resource R CRI (i.e.) )Before.

[0306] Or, when M out of M resources R When a resource is indicated by the access network device, CRIk0~CRIk M-1 In Can be used with M R Each resource corresponds to a CRI; With MM R Each resource corresponds to a specific CRI. In other words, in the CSI report, M... R M corresponding to each resource R CRI (i.e.) ) Located in MM R MM corresponding to each resource R CRI (i.e.) )Before.

[0307] Based on this method one, the terminal device can make its own decision, or it can make a decision based on the M indicated by the access network device. RM resources (e.g., M R equal to M, the M R resources are the M resources; and R less than M, the M resources include the M R resources and M-M R resources autonomously selected by the terminal device). Further, the M resources can be indicated by resource indication (e.g., M CRIs) in the CSI report to the access network device; that is, whether the M R resources are indicated by the access network device to the terminal device, the terminal device can report the CRIs corresponding to the M resources to the access network device, so that the access network device can obtain the M resources selected by the terminal device when receiving the CSI report, and the complexity of the access network device obtaining the M resources selected by the terminal device is reduced.

[0308] Mode two, the terminal device can report the M resources selected by the terminal device through a bitmap. That is, the CSI report indicates the CRIs corresponding to the M resources through the bitmap; that is, the CSI report indicating the M resources includes that the CSI report includes the bitmap.

[0309] Exemplarily, the bitmap can include the following two possible implementation manners:

[0310] Implementation manner one: the size of the bitmap is Ks bits; each bit in the Ks bits corresponds to one CRI in the M CRIs. The CRI corresponds to one resource in the Ks resources; and the value of the bit is used to indicate whether the resource corresponding to the bit is included in the M resources; or in other words, the value of the bit is used to indicate whether the CRI corresponding to the bit is reported by the terminal device.

[0311] For convenience of description, in the following embodiments, the bitmap with the size of Ks bits can be referred to as Ks bitmap, which is uniformly described here and will not be repeated. In addition, in this implementation manner one, the bitmap used to indicate the M resources is the Ks bitmap.

[0312] Exemplarily, in this implementation manner one, the M resources can be autonomously determined by the terminal device; or can be indicated by the access network device (i.e., the M R resources indicated by the first indication information are the M resources, and M R equals M); or can include the M R resources indicated by the access network device and the M-M R resources autonomously selected by the terminal device, and M R is less than M.

[0313] Specifically, in the implementation manner one, the CSI report can include the content shown in Table 3, or in other words, the CSI field can include the content shown in Table 3.

[0314] Table 3

[0315] The bit length of the field where the Ks bitmap is located is For details, please refer to the related description of the CRI field, which will not be repeated here. At this time, the Ks resources are CRI#0-CRI#Ks-1. Taking an example in which the Ks resources are CRI#0-CRI#9 respectively, the M resources are CRI#1, CRI#2, CRI#7, and CRI#9 respectively, and the Ks bits correspond to CRI#0-CRI#9 from high bit to low bit in turn, the size of the Ks bitmap is 10 bits, and the 10 bits correspond to CRI#0-CRI#9 from high bit to low bit in turn. When the value of any bit in the Ks bitmap is 1, it indicates that the M resources include the resource corresponding to the bit. The bit bitmap can be 0110000101. When the value of any bit in the Ks bitmap is 0, it indicates that the M resources include the resource corresponding to the bit. The Ks bitmap can be 1001111010. At this time, the M resources corresponding to the CRI: CRIk0-CRIk3, the resource associated with CRIk0 (or the resource corresponding to CRIk0) is the resource corresponding to CRI#1, the resource associated with CRIk1 (or the resource corresponding to CRIk1) is the resource corresponding to CRI#2, the resource associated with CRIk2 (or the resource corresponding to CRIk2) is the resource corresponding to CRI#7, and the resource associated with CRIk3 (or the resource corresponding to CRIk3) is the resource corresponding to CRI#9.

[0316] Based on the implementation manner one, the terminal device can indicate the CRI corresponding to the M resources it reports by setting a bit bitmap with a size of Ks bits (i.e., a Ks bitmap), which provides a possible implementation for the terminal device to report the CRI corresponding to the M resources in the application.

[0317] Implementation manner two: when the access network device indicates M R resources to the terminal device, and M R is less than M, the size of the bit bitmap is Ks-M R bits; wherein each bit in the Ks-M R bits corresponds to a CRI, the CRI corresponds to one of the Ks-M R resources, the value of the bit is used to indicate whether the resource corresponding to the bit is included in the M resources, or in other words, the value of the bit is used to indicate whether the terminal device reports the resource corresponding to the bit. Ks-M RThe resource is one of the Ks resources excluding M. R Resources beyond those resources.

[0318] For ease of description, in the following embodiments, the size can be Ks-M R A bitmap of 100 bits is abbreviated as Ks-M. R Bitmaps will be explained uniformly here and will not be repeated. Furthermore, in this second implementation method, MM is used to indicate the M resources. R The bitmap of each resource is Ks-M R Bitmap.

[0319] Optionally, in this second embodiment, the terminal device can report the M R The CRI corresponding to each resource, or alternatively, the M may not be reported. R The CRI corresponding to each resource.

[0320] For example, when the terminal device reports the M R When there are M CRIs corresponding to a resource, the resource indications for the CSI report indicating M resources may include: CSI report indications M R Resource indicators for each resource, and MM R Resource indications for individual resources; for example, a CSI report may include resource indications for individual resources. and Ks-M R Bitmap. Among them, Corresponding to M respectively R One of the resources. When the terminal device does not report this M. R When indicating the resource of M resources, the CSI report indicating the resource of M resources may include: CSI report indicating M M. R Resource indications for each resource; that is, CSI reports include Ks-M R Bitmap.

[0321] Specifically, when the terminal device reports the M R When indicating a resource, the CSI report may include the content shown in Table 4A below, or in other words, the CSI fields may include the content shown in Table 4A below:

[0322] Table 4A

[0323] Or, when the terminal device does not report the M R When indicating a resource, the CSI report may include the content shown in Table 4B below, or in other words, the CSI fields may include the content shown in Table 4B below:

[0324] Table 4B

[0325] In the above Table 4A and Table 4B, the bit length of the field where Ks-M R is located is Specifically, the implementation of the related parameters can refer to the related description of Table 3 above, which will not be repeated here.

[0326] Taking Ks resources as CRI#0~CRI#9, M R resources as CRI#1~CRI#2, M resources as CRI#1, CRI#2, CRI#7, CRI#9 for example, at this time, the size of the Ks-M R bitmap is 8 bits, and the 8 bits correspond to CRI#0, CRI#3~CRI#9 from high to low. Wherein, when the value of any bit in the Ks-M R bitmap is 1, it means that the M resources include the resource corresponding to the bit, and the Ks-M R bitmap can be 00000101, when the value of any bit in the Ks-M R bitmap is 0, it means that the M resources do not include the resource corresponding to the bit, and the Ks-M R bitmap can be 11111010; so as to realize that the terminal device indicates M-M R resources through the Ks-M R resources. At this time, the CRIs corresponding to the M resources: CRIk0~CRIk3, the resource associated with CRIk0 (or the resource corresponding to CRIk0) is the resource corresponding to CRI#1, the resource associated with CRIk1 (or the resource corresponding to CRIk1) is the resource corresponding to CRI#2, the resource associated with CRIk2 (or the resource corresponding to CRIk2) is the resource corresponding to CRI#7, and the resource associated with CRIk3 (or the resource corresponding to CRIk3) is the resource corresponding to CRI#9. Specifically, when the terminal device reports the CRIs corresponding to the M R resources (that is, CRIk0~CRIk1), the CSI report can include the contents shown in the following Table 4C, or in other words, the CSI field can include the contents shown in the following Table 4C; that is, the above Table 4A can be replaced by the following Table 4C:

[0327] Table 4C

[0328] When the terminal device does not report the CRIs corresponding to the M R resources (that is, CRIk0~CRIk1), the CSI report can include the contents shown in the following Table 4D, or in other words, the CSI field can include the contents shown in the following Table 4D; that is, the above Table 4B can be replaced by the following Table 4D:

[0329] Table 4D

[0330] Based on the second implementation mode, when the access network device indicates M R resources, the terminal device sets the CRIs of M-M R resources other than the M R resources by using a bitmap of Ks-M R bits (i.e., a Ks-M R bitmap), and the terminal device can report the CRIs of the M R resources separately. Alternatively, the terminal device can not report the CRIs of the M R resources, thereby reducing the number of bits required for reporting the CRIs of the M R resources and saving resources.

[0331] In the third mode, the terminal device can report a combination value of the CRIs (M CRIs) of the M resources. For example, the terminal device can report a group index value of a group to which the M CRIs belong. The CSI report indicates the M resources, including: the CSI report includes a first group index value; and the first group index value is associated with the M resources.

[0332] For example, the first group index value is associated with the M resources, which means that the first group index value corresponds to a group including the M CRIs, and the M CRIs correspond to the M resources respectively, thereby realizing that the first group index value is associated with the M resources.

[0333] For example, the first group index value can also be referred to as the index of the first group, or other names such as the index value of the first resource group, the index value of the first resource index group, etc. The present application is not limited. It should be understood that in the present application, sometimes "index value" and "index" are used interchangeably, and the meanings of "index value" and "index" are the same, i.e., index number (value). Here, it is uniformly stated and will not be repeated.

[0334] For example, in this mode, the M resources can be determined by the terminal device autonomously; or can be indicated by the access network device (i.e., the M R resources indicated by the first indication information are the M resources, and M R equals M); or can include the M R resources indicated by the access network device and the M-M R resources selected by the terminal device autonomously, and M R is less than M.

[0335] Optionally, the first group of index values is associated with the M resources, which can be understood as: in the correspondence between the index values of the multiple groups and the multiple groups of resources, the first group of index values corresponds to a group of resources. At this time, the CSI report can include the content shown in Table 5, that is, the CSI field can include the content shown in Table 5:

[0336] Table 5

[0337] For example, the access network device can pre-group the Ks resources and number each resource group, thereby obtaining the correspondence between the index values of the multiple groups and the multiple resource groups; and then the access network device can inform the terminal device of the correspondence. Alternatively, the terminal device and the access network device can pre-agree the grouping rule (i.e., the correspondence) of the Ks resources, such as predefining through a protocol.

[0338] For example, the access network device can group the Ks resources according to the correlation between the beams (i.e., analog beams) transmitted on the Ks resources, such as grouping the resources on which the beams with strong correlation (such as correlation greater than or equal to a preset threshold) are located into the same resource group. Alternatively, the access network device can also group the Ks resources in a uniform and adjacent manner, i.e., each group includes the same number of resources.

[0339] For example, when the value of Ks is 12 (i.e., the CRIs corresponding to the Ks resources are CRI k0-CRI k 11 , the access network device can also group them in a uniform and adjacent manner; that is, the 12 CRIs can be uniformly divided into two groups, each group including 6 CRIs, i.e., the first group can include CRI k0-CRI k5, and the second group can include CRI k6-CRI k 11 . Alternatively, the 12 CRIs can be uniformly divided into three groups, each group including 4 CRIs, i.e., the first group can include CRI k0-CRI k3, the second group can include CRI k4-CRI k7, and the third group can include CRI k8-CRI k 11 . Alternatively, the 12 CRIs can be uniformly divided into four groups, each group including 3 CRIs, i.e., the first group can include CRI k0-CRI k2, the second group can include CRI k3-CRI k5, the third group can include CRI k6-CRI k8, and the fourth group can include CRI k9-CRI k 11 .

[0340] As another example, the access network device can group the Ks CRIs in a manner of uniform grouping combined with priority order of resources. In adjacent two groups among the multiple groups, the lowest priority of the resources corresponding to the CRIs in the former group is higher than the highest priority of the resources corresponding to the CRIs in the latter group. Alternatively, the highest priority of the resources corresponding to the CRIs in the former group is lower than the lowest priority of the resources corresponding to the CRIs in the latter group.

[0341] For example, the number of each group can be numbered in ascending order of the number of groups, or the number of each group can follow the number of the Ks resources (i.e., the Ks CRIs corresponding to the Ks resources), or the number of each group can be in any other possible form, which is not limited by the embodiments of the present application.

[0342] Specifically, taking the Ks CRIs corresponding to the Ks resources as an example, when each group is numbered in ascending order of the number of groups, the numbers of the two groups can be CSI-RS resource group indicator (GCRI) #0 and GCRI #0 respectively; when the number of each group follows the number of the Ks CRIs, if the Ks CRIs corresponding to the Ks resources are CRI k0 ~ CRI k7 in turn, the numbers of the two groups can be CRI k0 and CRI k7 respectively. Ks-1 Ks Ks+1

[0343] For example, taking the grouping rule of the Ks CRIs as: in a manner of uniform grouping combined with priority order of resources, and taking each group as being numbered in ascending order of the number of groups, if the Ks CRIs corresponding to the Ks resources (CRI #0 ~ CRI #7) are CRI k0 ~ CRI k7 in turn, and the priorities of the Ks resources are CRI #0, CRI #1, CRI #5, CRI #7, CRI #2, CRI #3, CRI #4, CRI #6 in turn from high to low, if the Ks CRIs are uniformly divided into two groups, and each group includes 4 CRIs; at this time, one of the two groups includes CRI k0, CRI k1, CRI k5, CRI k7, and the other group includes CRI k2, CRI k3, CRI k4, CRI k6; thus, the correspondence between the group index values of the multiple groups and the multiple CRIs can include the contents shown in Table 6 as follows:

[0344] Table 6

[0345] ​​​As shown in Table 6, when the M resources correspond to CRIs CRI k0, CRI k1, CRI k5, and CRI k7, the first group index value is GCRI#0, that is, the CSI report can include GCRI#0; when the M resources correspond to CRIs CRI k2, CRI k3, CRI k4, and CRI k6, the first group index value is GCRI#1, that is, the CSI report includes GCRI#1.

[0346] It should be noted that the above Table 6 exemplarily describes the grouping of the Ks CRIs with the value of Ks being 8 and the Ks CRIs being divided into two groups. Actually, when the value of Ks is greater than 8 or less than 8, the Ks CRIs can also be divided into two groups or more than two groups (for example, 3 groups, 4 groups, 5 groups, 6 groups, etc., which are not limited by the embodiments of the present application), at this time, the implementation of the grouping of the Ks CRIs is similar to the implementation of the grouping of the Ks CRIs shown in the above Table 6, and specific reference can be made to the related description of the above Table 6, which is not described herein again.

[0347] Based on the possible implementation, the access network device can group the Ks CRIs corresponding to the Ks resources to obtain multiple groups of CRIs, so that when the CRIs corresponding to the M resources are located in the same group, the terminal device can indicate the CRIs (that is, the M CRIs) corresponding to the M resources by indicating the group index value (that is, the first group index value) of the group. This provides a possible implementation for the terminal device to report the CRIs corresponding to the M resources. Exemplarily, the multiple groups can be individually numbered, for example, the group index values of the multiple groups can be 0, 1, …; it can be understood that, generally, in the case of a certain number of resources, the number of bits required to indicate the group index value is much smaller than the number of bits required to individually indicate the CRIs corresponding to each resource, thereby saving resources.

[0348] The above is the description of the "resource indication of the M resources", and the "priority order of the M resources" involved in the above embodiments is described in detail below.

[0349] As an example, when the CRIs CRIk0-CRIk M-1 According to the arrangement order of the M resources in the Ks resources and the CRIs CRIk0-CRIk M-1 corresponding to the M resources, the arrangement order is the priority order (mapping order) of the M resources.

[0350] Optionally, in this example, the CSI report indicates one or more of the following: the resource indication (such as the CRIs CRIk0-CRIk M-1 of the M resources, the M first-type parameters, or the M second-type parameters. Specifically, the CRIs CRIk0-CRIk M-1The implementation of the CSI report can refer to the related description of the above embodiments, which will not be repeated here.

[0351] As another example, when the grouping rule of the group in which the first group index value is located is grouping according to the priority of the resources (i.e., the M resources corresponding to the M CRIs in the group in which the first group index value is located are sorted according to the priority), the arrangement order of the M CRIs in the first group index value is the priority order of the M resources.

[0352] Optionally, the CSI report indicates one or more of the following: resource indication of the M resources (such as the first group index value), the M first-type parameters, or the M second-type parameters. Specifically, the implementation of the first group index value can refer to the related description of the above embodiments, which will not be repeated here.

[0353] As a third example, when the resource indication of the M resources is represented by a bit map (such as a Ks bit map or a Ks-M R bit map), or the CRlk0~CRlk M-1 M resources do not correspond to the arrangement order of the M resources in the Ks resources, or when the grouping rule of the group in which the first group index value is located is not grouping according to the priority of the resources; the priority order of the M resources can be represented by , where corresponding to the priority of the resource corresponding to CRlk0 in the M resources in the M resources, corresponding to the priority of the resource corresponding to CRlk M-1 in the M resources. The value of m = 0, 1,..., M-1.

[0354] Taking the index values of the M resources as CRlk0~CRlk3 and the value of M as 4 as an example, if the priority of the M resources from high to low is CRlk2, CRlk1, CRlk3, CRlk0 in turn, the CSI report can include , where

[0355] Optionally, under this example, the CSI report indicates one or more of the following: resource indication of the M resources, M first-type parameters, priority order of the M resources, or M second-type parameters.

[0356] In some embodiments, the terminal device can determine the priority of the M resources based on the following three ways:

[0357] In a first mode, the terminal device can determine the priority of the M resources based on the content of the M channel qualities corresponding to the M resources.

[0358] In a possible implementation, the priority of the M resources is determined based on at least one of the following parameters: CRI, RI, PMI, and CQI. In other words, the priority of the M resources is determined based on the content of the M channel quality information, and the parameters in the above implementation modes are only exemplary, and the M channel quality information can also include other measurement parameters, which are not limited in the embodiments of the present application.

[0359] The content of the M channel quality information corresponding to the M resources includes at least one of the following parameters: CRI, RI, PMI, CQI, and the like.

[0360] As an example, the priority of the M resources is determined based on RI and CQI. For example, the channel capacity can be determined based on RI and CQI, and the priority of the M resources can be determined based on the channel capacity, wherein the greater the channel capacity in the channel quality information corresponding to the resource, the higher the priority of the resource.

[0361] Optionally, when the channel capacities of two resources are equal, the priority of the two resources can be determined based on the size of CRI. For example, the smaller the CRI in the channel quality information corresponding to the resource, the higher the priority of the resource; or the greater the CRI in the channel quality information corresponding to the resource, the higher the priority of the resource.

[0362] As another example, the priority of the M resources is determined based on RI. For example, the greater the RI corresponding to the resource, the higher the priority of the resource.

[0363] Optionally, when the values of the RIs of two resources are equal, the priority of the two resources can also be determined based on the size of CQI and / or CRI.

[0364] For example, when the priority of the two resources is determined based on CRI, the smaller the CRI in the channel quality information corresponding to the resource, the higher the priority of the resource; or the greater the CRI in the channel quality information corresponding to the resource, the higher the priority of the resource. When the priority of the two resources is determined based on CQI, the greater the CQI corresponding to the resource, the higher the priority of the resource; for example, the CQI can include the CQI of the first transport block.

[0365] As another example, the priority of the M resources is determined based on CQI. For example, the greater the CQI corresponding to the resource, the higher the priority of the resource.

[0366] Optionally, when the CQI values ​​of two resources are equal, the priority of the two resources can also be determined based on the values ​​of RI and / or CRI.

[0367] For example, when the priority of the two resources is determined based on RI, the higher the RI value of the resource, the higher the priority of the resource. When the priority of the two resources is determined based on CRI, the lower the CRI value in the channel quality information of the resource, the higher the priority of the resource; or, the higher the CRI value in the channel quality information of the resource, the higher the priority of the resource.

[0368] As another example, the priority of M resources is determined based on PMI.

[0369] Optionally, the priority of the M resources can be determined based on PMI quantization precision or PMI quantization bit count. The higher the PMI quantization precision of a resource, the higher its priority. Conversely, the lower the PMI quantization bit count of a resource, the higher its priority.

[0370] Method 2: The terminal device can determine the priority of M resources based on the classification of M resources.

[0371] Optionally, the categories of the M resources are based on whether the resource is indicated by the access network device. R The resources are determined among the M resources. Of these, M are indicated by the access network device. R Any one of the resources has a higher priority than MM. R The priority of any one of the resources.

[0372] Optional, M R The priority of resources within a resource can be determined according to the method described in Method 1 above. Similarly, MM R The priority of a resource within a resource can also be determined according to the method described in Method 1 above, and this application embodiment does not impose any restrictions.

[0373] Or, M R The priority of resources within a resource can be determined autonomously by the terminal device; similarly, MM... R The priority of resources within a resource can also be determined autonomously by the terminal device.

[0374] For example, the implementation of the terminal device's autonomous decision-making on resource priorities can be referred to the relevant description in Method 3 below, which will not be repeated here.

[0375] Method 3: The terminal device can autonomously decide the priority of M resources.

[0376] As an example, the terminal device can evaluate the signal quality based on the M channel quality information corresponding to the M resources, for example, evaluate the signal quality based on indicators such as signal-to-noise ratio (SNR), bit error rate (BER), signal strength, etc., so as to determine the priority of the M channel quality information.

[0377] As another example, a priority decision algorithm can be built-in on the terminal device, which can assign a priority to each reference signal based on the results of the signal quality evaluation and other possible factors (such as service demand, user preference, network condition, etc.).

[0378] Among them, the algorithm can use various strategies such as weighted scoring, machine learning model, fuzzy logic, etc. to produce a better priority assignment, and the embodiments of the present application are not limited thereto.

[0379] The above is a description of the "priority order of the M resources", and the following will introduce in detail the "M values of the number of selected spatial bases" and "M values of the number of selected spatial bases" involved in the above embodiments. NZ

[0380] For the M values of the number of selected spatial bases:

[0381] In a possible implementation, the number of selected spatial bases can be the selected L m value. That is, the M values of the number of selected spatial bases include the selected L0value to the selected L M-1 value. Among them, m represents the resource corresponding to CRI k m , that is, the selected L m value is the number of selected spatial bases corresponding to the resource corresponding to CRI k m .

[0382] For example, there are M fields in the CSI field, and the M fields correspond to the selected L0value to the selected L M-1 value. That is, at this time, there are M fields in the CSI field, and each field in the M fields indicates one of the M values of the number of selected spatial bases.

[0383] Specifically, the selected L0value, …, the selected L M-1 value can be one or more values in the multiple values agreed between the terminal device and the access network device, such as one or more values can be predefined through a protocol, so that the terminal device can determine the selected L0value, …, the selected L M-1 value from the predefined one or more values.

[0384] In another possible implementation, the M values of the number of selected spatial bases can be represented by the index value of the set where the M values are located.​

[0385] At this time, there is a field in the CSI field, which indicates an index value corresponding to a combination of M values of the number of selected spatial domain bases (such as the number of selected L m The indication of the value combination, or also can be called a group index value corresponding to the combination of the number of selected spatial domain bases). That is, there is a field in the CSI field, which indicates an index value corresponding to a combination of M values of the number of selected spatial domain bases. Specifically, taking any one of 1, 2, 3 as the value of M of the number of selected spatial domain bases as an example, the value and combination of L m are shown in the following table 7:

[0386] Table 7

[0387] Wherein, the first list in table 7 indicates the number of resources reported by the terminal device (that is, the value of M in M resources), the second list indicates an index value corresponding to a combination of M values of the number of selected spatial domain bases, and the third list indicates a specific implementation of M values of the number of selected spatial domain bases. Therefore, the CSI report can include a second group index value, wherein the second group index value is associated with M values of the number of selected spatial domain bases. For example, taking the value of M as 2 as an example, if the second group index value is 3, the M values of the number of selected spatial domain bases are {4, 2}. Since the M first type parameters are arranged in the order of resource indication of the M resources, in the CRI (that is, CRI k0, CRI k1) of the 2 resources indicated by the CSI report, the value of the number of selected spatial domain bases corresponding to CRI k0 is 4; the value of the number of selected spatial domain bases corresponding to CRI k1 is 2.

[0388] In yet another possible implementation, the M values of the number of selected spatial domain bases can be the same, that is, the M values of the number of selected spatial domain bases can be represented by the selected L value.

[0389] For example, the selected L value can be determined by the terminal device; or also can be indicated by the access network device. When the selected L value is indicated by the access network device, the terminal device can select to report the selected L value, or also can not report the selected L value.

[0390] Specifically, when the terminal device reports the selected L value, one or more CSI parameters include the selected L value, and further can include one or more of RI, wideband CQI of the first TB, subband difference of the first TB, K NZ When the terminal device does not report the selected L value, one or more CSI parameters can include one or more of RI, wideband CQI of the first TB, subband difference of the first TB, K NZ .

[0391] For K NZ M values of M:

[0392] In a possible implementation, the CSI report can include M values of K NZ M values of M.

[0393] For example, there are M fields in the CSI field, each of the M fields indicates one of the M values of K NZ M values of M. For example, the CSI report can include M values of K NZ M values of M, such as K NZ #0,..., K NZ #M-1. That is, there are M fields in the CSI field, each of the M fields indicates one of the M values of K NZ M values of M.

[0394] In another possible implementation, the M values of K NZ M values of M can be represented by an index value of a set in which the M values of K

[0395] For example, there is one field in the CSI field, which indicates an index value corresponding to a combination of the M values of K NZ M values of M. That is, there is one field in the CSI field, which indicates an index value corresponding to a combination of the M values of K NZ M values of M. For example, the CSI report can include a third group of index values, which are associated with the M values of K NZ .

[0396] For example, the implementation of the third group of index values is similar to the implementation of the second group of index values described above, and details can be referred to the description of the second group of index values, which will not be repeated here.

[0397] In yet another possible implementation, the M values of K NZ M values of K NZ M values of K.

[0398] For example, there is one field in the CSI field, which indicates a sum of the M values of K NZ M values of K. For example, the field includes a second value. The second value is the sum of the M values of K NZ M values of K.

[0399] The "CSI report" involved in the above embodiments will be described in detail below. For example, the CSI report can include one or more of resource indications of M resources, M first-type parameters, priority orders of the M resources, or M second-type parameters.

[0400] Optionally, the CSI report can be divided into a first part (part 1) and a second part (part 2). In the first part, part or all of the resource indications of the M resources and part or all of the CSI parameters of the M first-type parameters are generally located; in the second part, the priority order of the M resources and the M second-type parameters are generally located.

[0401] In addition, the first part is located before the second part. Therefore, in the CSI report, the parameters in the first part (such as the resource indications of the M resources, and / or, the M first-type parameters) can be arranged first, and then the parameters in the second part (such as the priority order of the M resources, and / or, the M second-type parameters) are arranged. Thus, when the uplink resource is limited, the parameters arranged in the CSI report later can be discarded preferentially. For example, when the CSI report includes the resource indications of the M resources and / or the M first-type parameters, part or all of the resource indications of the M resources are located in the first part of the CSI report, and part or all of the CSI parameters of the M first-type parameters are located in the first part; and / or, when the CSI report includes the M second-type parameters and / or the priority order of the M resources, the M second-type parameters are located in the second part of the CSI report, and the priority order of the M resources is located in the second part.

[0402] Specifically, the CSI report can be implemented based on the following three cases:

[0403] Case one: all of the resource indications of the M resources and / or all of the CSI parameters of the M first-type parameters are located in the first part, and the priority order of the M resources and the M second-type parameters are located in the second part.

[0404] For example, when part of the resource indications of the M resources are located in the first part, another part of the resource indications of the M resources are located in the second part; and / or, when part of the CSI parameters of the M first-type parameters are located in the first part, another part of the CSI parameters of the M first-type parameters are located in the second part.

[0405] Case two: part of the resource indications of the M resources and / or part of the CSI parameters of the M first-type parameters are located in the first part, and the priority order of the M resources and the M second-type parameters are located in the second part.

[0406] Exemplarily, when part of the resource indications of the M resources is located in the first part, another part of the resource indications of the M resources is located before the second part, and the another part of the resource indications of the M resources is located after the first part; and / or when part of the M CSI parameters of the first type is located in the first part, another part of the M CSI parameters of the first type is located before the second part, and the another part of the M CSI parameters of the first type is located after the first part.

[0407] In the following, the arrangement order of the parameters in the first part in the CSI report is introduced based on different implementations of the resource indications of the M resources when the first part includes the resource indications of the M resources and / or the M CSI parameters of the first type.

[0408] Optionally, the M CSI parameters of the first type are arranged in the order of the resource indications of the M resources, including that the M values included in each parameter are arranged in the order of the resource indications of the M resources.

[0409] Specifically, the arrangement order of the parameters can be the order from top to bottom in any one of the following Tables 8A to 21H. When the uplink resource is limited, the terminal device can discard the parameters in the order from bottom to top in the table, i.e., the parameters in the last row in the table are discarded first.

[0410] Exemplarily, the parameters included in the first part and the arrangement order of the parameters can be implemented based on the following seven scenarios:

[0411] Scenario one, the first part in the CSI report includes one or more of the resource indications of the M resources, the M values of the RI, the M values of the wideband CQI of the first TB, the M values of the subband differential CQI of the first TB, the M values of the number of the selected spatial bases, or the M values of the K NZ .

[0412] In a possible implementation, the M values of each parameter of the M CSI parameters of the first type are arranged in the order of the resource indications of the M resources, and the M values of the same CSI parameter are arranged together, i.e., the M values of the same CSI parameter are adjacent in the first part. The resource indications of the M resources can be located before the M CSI parameters of the first type, i.e., one or more of the M values of the RI, the M values of the wideband CQI of the first TB, the M values of the subband differential CQI of the first TB, the M values of the number of the selected spatial bases, or the M values of the K NZ .

[0413] For example, when the resource indication of the M resources is indicated by the bitmap or the group index value (e.g., the first group index value) of the resource group where the M resources are located, taking the Ks-bit bitmap (i.e., the bitmap with a size of Ks bits) as an example, the terminal device can arrange, in a sequential order, the Ks-bit bitmap or the group index value of the resource group where the M resources are located, the M values of the RI, the M values of the wideband CQI of the first TB, the M values of the subband differential CQI of the first TB, the M values of the number of the selected spatial domain bases (i.e., the indication of the selected L0 value ~ the indication of the selected L M-1 value), and the M values of the K NZ .

[0414] Specifically, taking the M resources including M CSI-RS resources as an example, the part 1 in the CSI report (or the CSI field) can include one or more rows of parameters shown in Table 8A:

[0415] Table 8A

[0416] When the resource indication of the M resources is reported respectively, i.e., the resource indication of the M resources is indicated by CRI k0~CRI k M-1 , CRI k0~CRI k M-1 may be located before one or more CSI parameters included in the M first type parameters.

[0417] Specifically, the terminal device can arrange, in a sequential order, CRI k0~CRI k M-1 , the M values of the RI, the M values of the wideband CQI of the first TB, the M values of the subband differential CQI of the first TB, the M values of the number of the selected spatial domain bases (i.e., the indication of the selected L0 value ~ the indication of the selected L M-1 value), and the M values of the K NZ .

[0418] For example, taking the M resources including M CSI-RS resources as an example, the part 1 in the CSI report (or the CSI field) can include one or more rows of parameters shown in Table 8B:

[0419] Table 8B

[0420] In the above Table 8A and / or 8B, the selected L0 value ~ the selected L M-1 value are the M values of the number of the selected spatial domain bases, wherein the selected L0 value is the value corresponding to CRI k0 (or the value of the number of the selected spatial domain bases associated with CRI k0), and the selected L M-1 value is the value corresponding to CRI k M-1 (or the value of the number of the selected spatial domain bases associated with CRI k M-1The value is the value taken by the number of selected airspace bases associated with CRI k M-1 (.

[0421] In addition, CRI k0 to CRI k M-1 are respectively the CRIs corresponding to the M resources. That is to say, CRI k m is the CRI corresponding to one of the M resources. That is to say, the resource indication of the M resources (such as the Ks bitmap or group index value in Table 8A, or CRI k0 to CRI k shown in Table 8B M-1 ) is used to indicate CRI k0 to CRI k M-1 .

[0422] Specifically, the M resources corresponding to CRI k0 to CRI k M-1 can be determined by the terminal device's independent decision; or, they can also be determined by the terminal device based on the M R resources indicated by the access network device (for example, when M R = M, the M R resources are the M resources, and when M R < M, in addition to the M R resources, the terminal device can also independently determine M - M R resources).

[0423] Among them, when the terminal device indicates the resource indication of the M resources through CRI k0 to CRI k M-1 (that is, part 1 includes CRI k0 to CRI k M-1 ), the correspondence (or mapping relationship) between CRI k0 to CRI k M-1 and the M resources (such as the terminal device independently selects the M resources, or the M resources are indicated by the access network device (that is, M R = M), or M R of the M resources are indicated by the access network device (that is, M R < M)) can refer to the relevant descriptions in the above embodiments and will not be elaborated here.

[0424] In addition, when M R = M, the terminal device may also not report the resource indication of the M resources (that is, part 1 does not include the Ks bitmap or group index value shown in Table 8A, or CRI k0 to CRI k in Table 8B M-1 ); at this time, part 1 may include one or more other rows of parameters in Table 8A except for the field where the Ks bitmap or group index value is located; or part 1 may include Table 8B except for CRI k0 to CRI k M-1One or more lines of parameters other than the field where it is located.

[0425] When M R <When M is less than M, the terminal device can also report the CRI corresponding to this M R resource individually (that is Among them, each CRI in R corresponds to one of the M R resources. In addition, the CRI corresponding to the M - M R resources other than this M Among them, each CRI in R corresponds to one of the M - M R resources) can be represented by a Ks - M bitmap. That is to say, the resource indication of the M resources is represented by R and the Ks - M bitmap. At this time, part 1 in the CSI report (or rather, the CSI field) can include one or more lines of parameters as shown in Table 8C below. That is to say, Table 8A and / or 8B can be replaced by Table 8C below: Table 8C [[ID=Q34]]

[0427] Among them, in the above Table 8C, the implementation of the Ks - M R bitmap can refer to the relevant description in the above embodiment. In addition, the implementation of other parameters in Table 8C is the same as that in the above Table 8A and / or Table 8B. For details, please refer to the relevant description in the above Table 8A and / or Table 8B, which will not be elaborated here.

[0428] Or, when M R <is less than M, the terminal device can also not report the CRI corresponding to this M R resource (that is ), that is to say, part 1 does not include In addition, the CRI corresponding to the M - M R resources other than this M R resource (that is Among them, each CRI in R corresponds to one of the M - M R resources) can be represented by a Ks - M R bitmap; that is to say, among the resource indications of the M resources, the M - M R resources (that is, the M - M RThe resource indication of the M resources can be represented by Ks-M R The resource indication of the M resources can be represented by a bitmap. R The resource indication of the M resources can be represented by a bitmap. The part 1 in the CSI report (or CSI field) can include one or more rows of parameters in Table 8C except for the row of parameters.

[0429] Alternatively, when M R <M, and the terminal device does not report the CRI corresponding to the M R resources, the CRI corresponding to the M-M resources can be reported separately. R The CRI corresponding to the M-M resources can be reported separately. The CRI corresponding to the M-M R resources can be reported separately. R The resource indication of the M resources can be represented by Ks-M R resources, and the resource indication of the M-M R resources can be represented by Ks-M The resource indication of the M resources can be represented by a bitmap. R The resource indication of the M resources can be represented by a bitmap.

[0430] Table 8D

[0431] The implementation of each parameter in Table 8D is the same as that in Table 8A and / or Table 8B, and details can be referred to the related description of Table 8A and / or Table 8B, which will not be repeated here.

[0432] In addition, in Table 8C and Table 8D, the CRI k0 is used to represent the CRI of the M R resources indicated by the access network device (wherein M R <M). R The M R resources can be randomly selected from the Ks resources, or can be the top M R resources in priority in the Ks resources, or can be selected from the Ks resources by any other possible way, which is not limited by the embodiments of the present application. R For example, when the M Rthe CRI corresponding to the resource with the highest priority among the Ks-M It can be considered that the M R th resource according to the CRI corresponding to the resource with the lowest priority among the Ks-M R th resource according to the CRI corresponding to the resource with the lowest priority among the Ks-M

[0433] Furthermore, in the above Table 8C and Table 8D, CRI used to represent the M-M R resources among the M R resources (wherein M R resources can be selected from the Ks-M R resources among the Ks resources except for the M R resources, or can also be the first M-M R resources with the highest priority among the Ks-M R resources, or can also be selected from the Ks-M R resources in any other possible way, and the embodiments of the present application are not limited thereto. R

[0434] Exemplarily, in the above Table 8A-Table 8D, the CRI k m associated with wherein, υ represents the number of layers or the number of streams, β represents the proportion of non-zero elements, M1 represents the number of frequency domain bases of layer 1, and m = 1, 2, …, M-1.

[0435] Exemplarily, in Release 16, when the DFT codebook Type II Codebook is used, the corresponding codebook parameter combination is configured as shown in the following Table 8E:

[0436] Table 8E

[0437] In the above Table 8E, L is the number of bases selected for each polarization, p υ is the proportion of selection of each inverse discrete fourier transform (IDFT) base, β is the proportion of non-zero elements, and υ is the rank (i.e., the number of layers or the number of streams).

[0438] In a possible implementation, when the access network device indicates M R resources (wherein M R ​When <M), for the M first-type parameters, the terminal device can also first report the CSI parameters corresponding to the CRI of these M R resources (or rather, among the values of the CSI parameters, the values corresponding to the CRI of these M R resources), and then report the CSI parameters corresponding to the CRI of M - M R resources (or rather, among the values of the CSI parameters, the values corresponding to the CRI of these M - M R resources).

[0439] That is to say, for the M first-type parameters, the terminal device can first report the CSI parameters associated (or corresponding) with the CRI of these M R resources (that is, the values of the CSI parameters among the M first-type parameters that are associated (or corresponding) with the CRI of these M R resources), and then report the CSI parameters associated (or corresponding) with the CRI of M - M R resources (that is, the values of the CSI parameters among the M first-type parameters that are associated (or corresponding) with the CRI of these M - M R resources).

[0440] At this time, the arrangement order of the M first-type parameters in part 1 is as follows: the M R values among the M values of RI that correspond to the M R resources, the M R values among the M values of the wideband CQI of the first TB that correspond to the M R resources, the M R values among the M values of the sub-band differential CQI of the first TB that correspond to the M R resources, the M M-1 values among the M values of the number of selected spatial domain bases (that is, the indication of the selected L0 value to the indication of the selected L R value) that correspond to the M R resources, the M NZ values among the M values of K R that correspond to the M R resources, the M R values among the M values of RI that correspond to M - M R resources, the M R values among the M values of the wideband CQI of the first TB that correspond to M - M R resources, the M R values among the M values of the sub-band differential CQI of the first TB that correspond to M - M R resources, the M R ​R K values, K NZ M values of M-M R resources correspond to M-M R values.

[0441] Thus, when the terminal device reports the CRI corresponding to the M R resources in part 1 (i.e., part 1 includes ), and the CRI corresponding to the M-M R resources is represented by , the part 1 in the CSI report can include one or more rows of parameters as shown in Table 8F below, that is, the above Table 8C can be replaced by the following Table 8F:

[0442] Table 8F

[0443] Wherein, the implementation of each parameter in Table 8F can refer to the related description in the above Table 8C, which will not be repeated here.

[0444] When the terminal device does not report the CRI corresponding to the M R resources in part 1 (i.e., part 1 does not include ), and the CRI corresponding to the M-M R resources is represented by , the part 1 in the CSI report can include one or more rows of parameters as shown in Table 8G below, that is, the above Table 8D can be replaced by the following Table 8G:

[0445] Table 8G

[0446] Wherein, the implementation of each parameter in Table 8G can refer to the related description in the above Table 8D, which will not be repeated here.

[0447] It should be understood that the above Tables 8A-8D, 8F-8G are only as an exemplary illustration, and should not be limited by the embodiments of the present application. The new table contents obtained by reasonable deformation or supplement of the contents in any one of Tables 8A-8D, 8F-8G belong to the protection scope of the embodiments of the present application.

[0448] In another possible implementation, the M values of each parameter in the M first type parameters are arranged in the order of resource indication of the M resources, and the values of the CSI parameters corresponding to the same CRI are arranged together, that is, the values of the CSI parameters corresponding to the same CRI are adjacent in the first part.

[0449] That is, the M first-type parameters are arranged in the order of resource indication of the M resources, including: CRI k m-1 The value of each CSI parameter corresponding to the value of CRI k m The value of each CSI parameter corresponding to the value of CRI k

[0450] The value of each CSI parameter corresponding to the value of CRI k

[0451] For example, the CRI of the third resource is located before the value of the CSI parameter corresponding to the CRI of the third resource, and the value of the CSI parameter corresponding to the CRI of the third resource is located before the CRI of the fourth resource, the M resources include the third resource and the fourth resource, and the value of the CSI parameter corresponding to the CRI of the third resource is a value corresponding to the CRI of the third resource in a plurality of values of each CSI parameter. NZ For example, the CRI of the third resource is located before the value of the CSI parameter corresponding to the CRI of the third resource, and the value of the CSI parameter corresponding to the CRI of the third resource is located before the CRI of the fourth resource, the M resources include the third resource and the fourth resource, and the value of the CSI parameter corresponding to the CRI of the third resource is a value corresponding to the CRI of the third resource in a plurality of values of each CSI parameter. NZ For example, the CRI of the third resource is located before the value of the CSI parameter corresponding to the CRI of the third resource, and the value of the CSI parameter corresponding to the CRI of the third resource is located before the CRI of the fourth resource, the M resources include the third resource and the fourth resource, and the value of the CSI parameter corresponding to the CRI of the third resource is a value corresponding to the CRI of the third resource in a plurality of values of each CSI parameter. NZ For example, the CRI of the third resource is located before the value of the CSI parameter corresponding to the CRI of the third resource, and the value of the CSI parameter corresponding to the CRI of the third resource is located before the CRI of the fourth resource, the M resources include the third resource and the fourth resource, and the value of the CSI parameter corresponding to the CRI of the third resource is a value corresponding to the CRI of the third resource in a plurality of values of each CSI parameter. M-1The corresponding RI value, CRI k M-1 The corresponding CQI value and CRI k for the first TB of broadband M-1 The corresponding values ​​of the subband differential CQI and CRI k for the first TB M-1 The corresponding selected L M-1 The value indication (i.e., with CRI k) M-1 The number of associated selected spatial bases), and CRI k M-1 Corresponding K NZ The value of .

[0452] Specifically, taking M resources, including M CSI-RS resources, as an example, part 1 of the CSI report (or CSI field) may include one or more rows of parameters as shown in Table 9A:

[0453] Table 9A

[0454] When the resource indications of M resources are reported separately, that is, when the resource indications of M resources are reported through CRI k0 to CRI k M-1 When represented, CRI k0~CRI k M-1 It can be located before one or more CSI parameters included in the M first-class parameters, or, CRI k m Located in CRI k m Before the values ​​of the corresponding CSI parameters.

[0455] Specifically, using CRI k m Located in CRI k m Taking the values ​​of the corresponding CSI parameters as an example, the terminal device can be arranged in the following order: CRI k0, the RI value corresponding to CRI k0, the broadband CQI value of the first TB corresponding to CRI k0, the sub-band differential CQI value of the first TB corresponding to CRI k0, the indication of the selected L0 value corresponding to CRI k0 (i.e., the number of selected spatial bases associated with CRI k0), and the K value corresponding to CRI k0. NZ The values ​​of CRI k1; the values ​​of RI corresponding to CRI k1, CRI k1, the broadband CQI of the first TB corresponding to CRI k1, the subband differential CQI of the first TB corresponding to CRI k1, the indication of the selected L1 value corresponding to CRI k1 (i.e., the number of corresponding selected spatial bases associated with CRI k1), and K corresponding to CRI k1. NZ The values ​​of CRI k are taken; and so on, finally arranged in order. M-1 CRI k M- The corresponding RI value and CRI k M-1Value of the wideband CQI of the corresponding first TB, CRI k M-1 Value of the subband differential CQI of the corresponding first TB, CRI k M-1 Corresponding selected L M-1 Indication of the value (i.e., the number of corresponding selected spatial domain bases associated with CRI k M-1 ), and CRI k M-1 Corresponding K NZ Value of

[0456] For example, taking M resources including M CSI-RS resources as an example, part 1 in the CSI report (or CSI field) may include one or more rows of parameters shown in Table 9B:

[0457] Table 9B

[0458] The implementation of each parameter in the above Table 9A and / or 9B is similar to the implementation of the relevant parameters in the above Table 8A and / or 8B. For specific details, refer to the relevant descriptions in the above Table 8A and / or 8B, which will not be elaborated here.

[0459] In addition, CRI k0 to CRI k M-1 are the CRIs corresponding to the M resources respectively. That is to say, CRI k m is the CRI corresponding to one of the M resources. That is to say, the resource indication of the M resources (such as the Ks bitmap or group index value in Table 9A, or CRI k0 to CRI k M-1 shown in Table 9B) is used to indicate CRI k0 to CRI k M-1 .

[0460] Specifically, the M resources corresponding to CRI k0 to CRI k M-1 can be determined by the terminal device independently; or, they can also be determined by the terminal device based on the M R resources indicated by the access network device (for example, when M R = M, the M R resources are the M resources, when M R < M, in addition to the M R resources, the terminal device can also independently determine M - M R resources).

[0461] Among them, when the terminal device indicates the resource indication of the M resources through CRI k0 to CRI k M-1 (i.e., part 1 includes CRI k0 to CRI k M-1 ), CRI k0 to CRI k M-1The correspondence (or mapping relationship) between the M resources (for example, the terminal device autonomously decides to select the M resources, or the M resources are indicated by the access network device (i.e., M R = M), or M R of the M resources are indicated by the access network device (i.e., M R < M)) can refer to the relevant descriptions in the above embodiments and will not be elaborated here.

[0462] In addition, when M R = M, the terminal device may also not report the resource indication of the M resources (that is, part 1 does not include the Ks bitmap or group index value shown in Table 9A, or CRI k0 to CRI k M-1 shown in Table 9B); at this time, part 1 may include one or more other rows of parameters in Table 9A except for the field where the Ks bitmap or group index value is located; or part 1 may include one or more other rows of parameters in Table 9B except for the field where CRI k0 to CRI k M-1 is located.

[0463] When M R < M, the terminal device may separately report the CRI corresponding to the M R resources (that is, Among them, each CRI in R corresponds to one of the M R resources), in addition, the CRI corresponding to the M - M R resources other than the M resources (that is, each CRI in R corresponds to one of the M - M R resources) can be represented by the Ks - M bitmap. That is to say, the resource indication of the M resources is represented by R and the Ks - M

[0464] Table 9C

[0465] Among them, in the above Table 9C, Ks - M RThe implementation of the bitmap can refer to the relevant descriptions in the above embodiments. In addition, the implementation of other parameters in Table 9C is the same as that in Table 9A and / or Table 9B above. Specifically, reference can be made to the relevant descriptions in Table 9A and / or Table 9B above, which will not be elaborated here.

[0466] Alternatively, when M R < M, the terminal device may not report the CRI corresponding to the M R resources (i.e., ). That is to say, part 1 does not include In addition, the CRI corresponding to the M - M R resources other than the M R resources can be represented by the Ks - M bitmap; that is, the resource indication of the M - M R resources (i.e., the M - M R resources other than the M R resources among the M resources) in the resource indication of the M resources is represented by the Ks - M R bitmap, where the resource indication of the M R resources does not need to be represented. At this time, part 1 in the CSI report may include one or more lines of parameters in Table 9C other than R above.

[0467] Alternatively, when M R < M and the terminal device does not report the CRI corresponding to the M R resources (i.e., ), the CRI corresponding to the M - M R resources other than the M R resources (i.e., ) can be reported separately. That is to say, the resource indication of the M - M R resources (i.e., the M - M R resources other than the M R resources among the M resources) in the resource indication of the M resources is represented by . Among them, the resource indication of the M R resources does not need to be represented. At this time, part 1 in the CSI report (or, the CSI field) may include one or more lines of parameters as shown in Table 9D below. That is to say, Table 9A and / or 9B can be replaced by Table 9D below:

[0468] Table 9D

[0469] Wherein, the implementation of each parameter in Table 9D is the same as the implementation in Table 9A and / or Table 9B described above, and the relevant description can be referred to the description of Table 9A and / or Table 9B above, which will not be repeated here.

[0470] In addition, in Table 9C and Table 9D described above, CRI used to represent the M R resources indicated by the access network device (wherein, M R <M) resources. Wherein, the M R resources can be randomly selected from the Ks resources by the access network device, or can be the first M R resources with the highest priority in the Ks resources, or can be selected from the Ks resources in any other possible way, which is not limited by the embodiments of the present application. For example, when the M R resources are the first M R resources with the highest priority in the Ks resources, the CRI k0 can be considered as the CRI corresponding to the resource with the highest priority in the M R resources (or the CRI corresponding to the resource with the highest priority in the Ks resources), the CRI corresponding to the resource with the lowest priority in the M R resources (or the CRI corresponding to the resource with the M R priority in the Ks resources).

[0471] In addition, in Table 9C and Table 9D described above, CRI used to represent the M-M R resources in the M resources except the M R resources indicated by the access network device (wherein, M R <M) resources. Wherein, the M-M R resources can be selected from the Ks-M R resources in the Ks resources except the M R resources by the terminal device, or can be the first M-M R resources with the highest priority in the Ks-M R resources, or can be selected from the Ks-M R resources in any other possible way, which is not limited by the embodiments of the present application.

[0472] It should be understood that the above Table 9A-Table 9D are only exemplary and should not be limited by the embodiments of the present application. The new table content obtained by reasonable deformation or supplement of the content in any one of Table 9A-Table 9D belongs to the protection scope of the embodiments of the present application.

[0473] Scenario 2: The first part of the CSI report includes the index value corresponding to the combination of M values ​​of RI, M values ​​of the first TB of wideband CQI, M values ​​of the first TB of subband differential CQI, and M values ​​of the number of selected spatial bases (i.e., the selected L). m Indicators of value combinations, such as the second group of index values ​​mentioned above, and K NZ One or more of the M possible values.

[0474] In one possible implementation, the M values ​​of each of the M first-class parameters are arranged in the order of the resource indications of the M resources, and the M values ​​of the same CSI parameter are arranged together, that is, the M values ​​of the same CSI parameter are adjacent in the first part. The resource indications of the M resources can be located at the index value corresponding to the combination of the M first-class parameters (i.e., the M values ​​of RI, the M values ​​of the broadband CQI of the first TB, the M values ​​of the subband differential CQI of the first TB, the M values ​​of the number of selected spatial bases, or K). NZ (one or more of the M possible values) before.

[0475] For example, when the resource indication of M resources is represented by a bitmap or the group index value of the resource group containing M resources (such as the first group index value), taking the bitmap as a Ks bitmap (i.e., a bitmap of size Ks bits) as an example, the terminal device can arrange them in the following order: Ks bitmap or the group index value of the resource group containing M resources, M values ​​of RI, M values ​​of the broadband CQI of the first TB, M values ​​of the subband differential CQI of the first TB, and the selected L m Indicator of value combination, K NZ It has M possible values.

[0476] Specifically, taking M resources, including M CSI-RS resources, as an example, part 1 of the CSI report (or CSI field) may include one or more rows of parameters as shown in Table 10A:

[0477] Table 10A

[0478] When the resource indications of M resources are reported separately, that is, when the resource indications of M resources are reported through CRI k0 to CRI k M-1 When represented, CRI k0~CRI k M-1 It can be placed before one or more CSI parameters included in the M first-class parameters.

[0479] Specifically, the terminal devices can be arranged in chronological order: CRI k0 to CRI k M-1, M values of RI, M values of wideband CQI of the first TB, M values of subband differential CQI of the first TB, indication of selected L m values combination, M values of K NZ .

[0480] For example, taking M CSI-RS resources as an example, part 1 in the CSI report (or CSI field) can include one or more rows of parameters shown in Table 10B:

[0481] Table 10B

[0482] Wherein, in the above Table 10A and / or Table 10B, N L represents the number of spatial basis combinations {{L0,…,L M-1}}. The implementation of each parameter in Table 10A and / or Table 10B is similar to the implementation of the related parameters in Table 8A and / or 8B described above. For details, please refer to the related description of Table 8A and / or 8B described above, which will not be repeated here.

[0483] In addition, CRI k0~CRI k M-1 , that is, the CRI corresponding to the M resources, that is, CRI k m corresponding to one of the M resources. That is, the resource indication (such as the Ks bitmap or group index value in Table 10A, or CRI k0~CRI k M-1 indicated in Table 10B) of the M resources is used to indicate CRI k0~CRI k M-1 .

[0484] Specifically, CRI k0~CRI k M-1 corresponding to the M resources can be determined by the terminal device autonomously; or, it can also be determined by the terminal device based on the M R resources indicated by the access network device (for example, when M R =M, the M R resources are the M resources, and when M R <M, in addition to the M R resources, the terminal device can also autonomously determine M-M R resources.

[0485] Wherein, when the terminal device indicates the M resources through CRI k0~CRI k M-1 , that is, part 1 includes CRI k0~CRI k M-1 , CRI k0~CRI k M-1The correspondence (or mapping relationship) between the M resources (for example, the terminal device autonomously selects the M resources, or the M resources are indicated by the access network device (i.e., M R = M), or M R of the M resources are indicated by the access network device (i.e., M R < M)) can be referred to the relevant descriptions in the above embodiments and will not be elaborated here.

[0486] In addition, when M R = M, the terminal device may also not report the resource indication of the M resources (i.e., part 1 does not include the Ks bitmap or group index value in Table 10A, or CRI k0~CRI k M-1 in Table 10B); at this time, part 1 may include one or more other rows of parameters in Table 10A except for the field where the Ks bitmap or group index value is located; or part 1 may include one or more other rows of parameters in Table 10B except for the field where CRI k0~CRI k M-1 is located.

[0487] When M R < M, the terminal device may separately report the CRI corresponding to the M R resources (i.e., ), and the CRI corresponding to the M-M R resources other than the M R resources (i.e., ) can be indicated by the Ks-M R bitmap. That is to say, the resource indication of the M resources is represented by and the Ks-M R bitmap. At this time, part 1 in the CSI report (or the CSI field) may include one or more rows of parameters as shown in Table 10C below, that is, Table 10A and / or 10B may be replaced by Table 10C below:

[0488] Table 10C

[0489] Among them, in the above Table 10C, the implementation of the Ks-M R bitmap can refer to the relevant descriptions in the above embodiments. In addition, the implementation of other parameters in Table 10C is the same as that in the above Table 10A and / or Table 10B. For details, please refer to the relevant descriptions in the above Table 10A and / or Table 10B and will not be elaborated here.

[0490] When M R < M, the terminal device may also not report the CRI corresponding to the M R resources (i.e., ), that is, part 1 does not include In addition, the CRIs (i.e. R ) corresponding to the M-M R resources other than the M resources can be indicated by a Ks-M R bit bitmap; that is, the resource indication of the M-M R resources (i.e. the M-M R resources other than the M R resources) in the resource indication of the M resources is indicated by a Ks-M R bit bitmap, and the resource indication of the M R resources does not need to be indicated. At this time, part 1 in the CSI report can include one or more rows of parameters in Table 10C above except .

[0491] Alternatively, when M R <M, and the terminal device does not report the CRIs (i.e. ) corresponding to the M R resources, the CRIs (i.e. ) corresponding to the M-M R resources other than the M R resources can be reported separately. That is, the resource indication of the M-M R resources (i.e. the M-M R resources other than the M R resources) in the resource indication of the M resources is indicated by a Ks-M . bitmap, and the resource indication of the M R resources does not need to be indicated. At this time, part 1 in the CSI report (or CSI field) can include one or more rows of parameters as shown in Table 10D below, that is, Table 10A and / or 10B can be replaced by Table 10D below:

[0492] Table 10D

[0493] Wherein, the implementation of each parameter in Table 10D is the same as the implementation in Table 10A and / or Table 10B above, which can be referred to the related description of Table 10A and / or Table 10B above, and will not be repeated here.

[0494] In addition, in Table 10C and Table 10D above, is used to indicate the CRIs of the M R resources (wherein M R <M) indicated by the access network device. Wherein, the M RThe M resources can be randomly selected from the Ks resources by the access network device, or can be the first M resources with the highest priority from the Ks resources, or can be selected from the Ks resources in any other possible manner, and embodiments of the present application are not limited thereto. For example, when the M resources are the first M resources with the highest priority from the Ks resources, the CRI k0 can be considered as the CRI corresponding to the resource with the highest priority from the M resources (or the CRI corresponding to the resource with the highest priority from the Ks resources), and the CRI corresponding to the resource with the lowest priority from the M resources (or the CRI corresponding to the resource with the Mth priority from the Ks resources). R R R R R R

[0495] In addition, in the above Table 10C and Table 10D, the CRI of the M-M resources in the M resources except for the M resources indicated by the access network device (wherein M R R R The M-M resources can be selected from the Ks resources except for the M resources by the terminal device, or can be the first M-M resources with the highest priority from the Ks-M resources, or can be selected from the Ks-M resources in any other possible manner, and embodiments of the present application are not limited thereto. R R R R R R

[0496] In a possible implementation, when the access network device indicates the M resources (wherein M R R R For the M first type parameters, the terminal device can first report the CSI parameters corresponding to the CRI of the M resources (or the values of the CSI parameters, wherein the values corresponding to the CRI of the M resources), and then report the CSI parameters corresponding to the CRI of the M-M resources (or the values of the CSI parameters, wherein the values corresponding to the CRI of the M-M resources). R R R

[0497] That is, the terminal device first reports the CSI parameters corresponding to the CRI of the M resources, and then reports the CSI parameters corresponding to the CRI of the M-M resources. R ​​​​​​​​​​​​​​​​​​​​The CSI parameters associated with (or corresponding to) the CRI of a resource (i.e., among the M first-type parameters, the one that corresponds to the M resources) R The CRI associated with each resource (or, the corresponding CSI parameter value) is then reported to MM. R The CSI parameters associated with (or corresponding to) the CRI of a resource (i.e., among the M first-type parameters, those corresponding to the M M) R The CRI associated with (or, corresponding to) the value of the CSI parameter for each resource.

[0498] At this point, the order of the M first-type parameters in part 1 is as follows: among the M values ​​of RI, the order is the same as M... R M corresponding to each resource R Among the M values ​​of the first TB broadband CQI, M is the only one that can be considered. R M corresponding to each resource R Among the M values ​​of the first TB subband differential CQI, M... R M corresponding to each resource R Each value, the selected L m Indicator of value combination, K NZ Among the M values, M R M corresponding to each resource R Among the M values ​​of RI, MM R MM corresponding to each resource R Among the M values ​​of the first TB broadband CQI, and MM R MM corresponding to each resource R Among the M values ​​of the first TB subband differential CQI, and MM R MM corresponding to each resource R Each value, K NZ Among the M values, the one that matches MM R MM corresponding to each resource R Each value can be selected.

[0499] Therefore, when the terminal device reports the M individually R The CRI corresponding to each resource (i.e., part 1 includes) ), and MM R The CRI corresponding to each resource is... When presenting, part 1 of the CSI report may include one or more lines of parameters as shown in Table 10E below, that is, Table 10C above can be replaced with Table 10E below:

[0500] Table 10E

[0501] Wherein, the implementation of each parameter in Table 10E can refer to the related description in Table 10C above, which will not be repeated here.

[0502] When the terminal device does not report the CRI corresponding to the M R resources (i.e., part 1 does not include ) and the CRI corresponding to the M-M R resources is indicated by Table, the part 1 in the CSI report can include one or more rows of parameters as shown in Table 10F below, that is, the above Table 10D can be replaced by the following Table 10F:

[0503] Table 10F

[0504] Wherein, the implementation of the related parameters in Table 10F can refer to the implementation of the related parameters in Table 10D above, which will not be repeated here.

[0505] It should be understood that the above Tables 10A-10F are only exemplary and should not be construed as limiting the embodiments of the present application. The new table contents obtained by reasonable deformation or supplement of the contents in any one of Tables 10A-10F belong to the protection scope of the embodiments of the present application.

[0506] In another possible implementation, the M values of each parameter in the M first type parameters are arranged in the order of the resource indication of the M resources, and the values of the CSI parameters corresponding to the same CRI are arranged together, that is, the values of the CSI parameters corresponding to the same CRI are adjacent in the first part.

[0507] That is, the M first type parameters are arranged in the order of the resource indication of the M resources, including: the CRI k m-1 corresponding to each CSI parameter is located before the value of each CSI parameter corresponding to the CRI k m , m = 1, 2, …, M-1. For example, the CRI of the third resource is located before the CSI parameter value corresponding to the CRI of the third resource, and the CSI parameter value corresponding to the CRI of the third resource is located before the CRI of the fourth resource, the M resources include the third resource and the fourth resource, and the CSI parameter value corresponding to the CRI of the third resource is the value corresponding to the CRI of the third resource among the multiple values of each CSI parameter.

[0508] Optionally, the CSI parameter corresponding to one of the M resources includes one or more of the second group of index values, the value of CRI corresponding to the one of the M values of RI, the value of CRI corresponding to the one of the M values of CQI in the first TB, the value of CRI corresponding to the one of the M values of subband differential CQI of the first TB, or the value of CRI corresponding to the one of the M values of K NZ . The value of the CSI parameter corresponding to any one of the M resources other than the one resource includes one or more of the value of CRI corresponding to the any one of the M values of RI, the value of CRI corresponding to the any one of the M values of CQI in the first TB, the value of CRI corresponding to the any one of the M values of subband differential CQI of the first TB, or the value of CRI corresponding to the any one of the M values of K NZ . Alternatively, the second group of index values is located after the values of the CSI parameter corresponding to the M CRIs.

[0509] For example, the indication of the selected L m value combination is associated with CRI k0~CRI k M-1 . The terminal device and the network device can agree on the location of the indication of the selected L m value combination in advance. For example, the indication of the selected L m value combination can be arranged together with the CSI parameter corresponding to any one of CRI k0~CRI k M-1 . Taking the case where the indication of the selected L m value combination is arranged together with the CSI parameter corresponding to CRI k0as an example, the indication of the selected L m value combination can be located after the value of subband differential CQI of the first TB corresponding to CRI k0and before the value of K NZ . Alternatively, the indication of the selected L m value combination can also be located after the values of each of the CSI parameters other than the value of the number of selected spatial bases in the M first-type parameters (i.e., the value of RI, the value of wideband CQI of the first TB, the value of subband differential CQI of the first TB, and the value of K NZ .

[0510] Optionally, the resource indication of the M resources can be located before one or more CSI parameters; or, the CRI of the third resource is located before the value of the CSI parameter corresponding to the CRI of the third resource, and the value of the CSI parameter corresponding to the CRI of the third resource is located before the CRI of the fourth resource, the M resources include the third resource and the fourth resource, and the value of the CSI parameter corresponding to the CRI of the third resource is the value corresponding to the CRI of the third resource in the multiple values in each CSI parameter.

[0511] For example, when the CRIs corresponding to the M resources are represented by a bitmap or a group index value (such as a first group index value) of a resource group in which the M resources are located, taking a Ks-bit bitmap (i.e., a bitmap with a size of Ks bits) as an example, if the selected L m The indication of the value combination and the CSI parameter corresponding to the CRI k0 are arranged together, and the terminal device can arrange them in the following order: the Ks-bit bitmap or the group index value of the resource group in which the M resources are located, the value of the RI corresponding to the CRI k0, the value of the wideband CQI of the first TB corresponding to the CRI k0, the value of the subband differential CQI of the first TB corresponding to the CRI k0, the indication of the selected L m The indication of the value combination and the CSI parameter corresponding to the CRI k0 are arranged together, and the terminal device can arrange them in the following order: the Ks-bit bitmap or the group index value of the resource group in which the M resources are located, the value of the RI corresponding to the CRI k0, the value of the wideband CQI of the first TB corresponding to the CRI k0, the value of the subband differential CQI of the first TB corresponding to the CRI k0, the indication of the selected L NZ The indication of the value combination and the CSI parameter corresponding to the CRI k0 are arranged together, and the terminal device can arrange them in the following order: the Ks-bit bitmap or the group index value of the resource group in which the M resources are located, the value of the RI corresponding to the CRI k0, the value of the wideband CQI of the first TB corresponding to the CRI k0, the value of the subband differential CQI of the first TB corresponding to the CRI k0, the indication of the selected L NZ The indication of the value combination and the CSI parameter corresponding to the CRI k0 are arranged together, and the terminal device can arrange them in the following order: the Ks-bit bitmap or the group index value of the resource group in which the M resources are located, the value of the RI corresponding to the CRI k0, the value of the wideband CQI of the first TB corresponding to the CRI k0, the value of the subband differential CQI of the first TB corresponding to the CRI k0, the indication of the selected L M-1 The indication of the value combination and the CSI parameter corresponding to the CRI k0 are arranged together, and the terminal device can arrange them in the following order: the Ks-bit bitmap or the group index value of the resource group in which the M resources are located, the value of the RI corresponding to the CRI k0, the value of the wideband CQI of the first TB corresponding to the CRI k0, the value of the subband differential CQI of the first TB corresponding to the CRI k0, the indication of the selected L M-1 The indication of the value combination and the CSI parameter corresponding to the CRI k0 are arranged together, and the terminal device can arrange them in the following order: the Ks-bit bitmap or the group index value of the resource group in which the M resources are located, the value of the RI corresponding to the CRI k0, the value of the wideband CQI of the first TB corresponding to the CRI k0, the value of the subband differential CQI of the first TB corresponding to the CRI k0, the indication of the selected L M-1 The indication of the value combination and the CSI parameter corresponding to the CRI k0 are arranged together, and the terminal device can arrange them in the following order: the Ks-bit bitmap or the group index value of the resource group in which the M resources are located, the value of the RI corresponding to the CRI k0, the value of the wideband CQI of the first TB corresponding to the CRI k0, the value of the subband differential CQI of the first TB corresponding to the CRI k0, the indication of the selected L M-1 The indication of the value combination and the CSI parameter corresponding to the CRI k0 are arranged together, and the terminal device can arrange them in the following order: the Ks-bit bitmap or the group index value of the resource group in which the M resources are located, the value of the RI corresponding to the CRI k0, the value of the wideband CQI of the first TB corresponding to the CRI k0, the value of the subband differential CQI of the first TB corresponding to the CRI k0, the indication of the selected L NZ The indication of the value combination and the CSI parameter corresponding to the CRI k0 are arranged together, and the terminal device can arrange them in the following order: the Ks-bit bitmap or the group index value of the resource group in which the M resources are located, the value of the RI corresponding to the CRI k0, the value of the wideband CQI of the first TB corresponding to the CRI k0, the value of the subband differential CQI of the first TB corresponding to the CRI k0, the indication of the selected L

[0512] Specifically, taking an example in which the M resources include M CSI-RS resources, the part 1 in the CSI report (or CSI field) can include one or more parameters shown in Table 11A:

[0513] Table 11A

[0514] When the CRIs corresponding to the M resources are reported respectively, i.e., the resource indication of the M resources is represented by CRI k0-CRI k M-1 , the CRI k0-CRI k M-1 may be located before one or more CSI parameters included in the M first type parameters, or the CRI k mCRI k m The value of each CSI parameter corresponding to the selected L

[0515] For example, the value of each CSI parameter corresponding to the selected L m CRI k m For example, the value of each CSI parameter corresponding to the selected L m The terminal device can arrange the CSI parameters in the following order: CRI k0, the value of RI corresponding to CRI k0, the value of wideband CQI of the first TB corresponding to CRI k0, the value of subband differential CQI of the first TB corresponding to CRI k0, the indication of the selected L m value combination, and the value of K NZ RI corresponding to CRI k0, the value of wideband CQI of the first TB corresponding to CRI k0, the value of subband differential CQI of the first TB corresponding to CRI k0, the indication of the selected L NZ value combination, and the value of K M-1 RI corresponding to CRI k0, the value of wideband CQI of the first TB corresponding to CRI k0, the value of subband differential CQI of the first TB corresponding to CRI k0, the indication of the selected L M-1 value combination, and the value of K M-1 RI corresponding to CRI k0, the value of wideband CQI of the first TB corresponding to CRI k0, the value of subband differential CQI of the first TB corresponding to CRI k0, the indication of the selected L M-1 value combination, and the value of K M-1 RI corresponding to CRI k0. NZ

[0516] For example, the part 1 in the CSI report (or CSI field) can include one or more rows of parameters shown in Table 11B, when M resources include M CSI-RS resources.

[0517] Table 11B

[0518] For example, the implementation of each parameter in Table 11A and / or Table 11B is similar to the implementation of the related parameters in Table 10A and / or Table 10B, and the related description of Table 10A and / or Table 10B can be referred to.

[0519] In addition, CRI k0~CRI k M-1 That is, the CRI corresponding to the M resources, that is, CRI k m ​The CRI corresponding to one of the M resources. That is, the resource indication of the M resources (such as the Ks bitmap or group index value in Table 11A, or the CRI k0 to CRI k shown in Table 11B) is used to indicate CRI k0 to CRI k M-1 ) M-1 .

[0520] Specifically, the M resources corresponding to CRI k0 to CRI k M-1 can be determined by the terminal device's independent decision; or, they can also be determined by the terminal device based on the M resources indicated by the access network device (for example, when M R = M, the M resources are the M resources, when M R < M, in addition to the M resources, the terminal device can also independently determine M - M R resources) R < M R resources) R

[0521] Among them, when the terminal device uses CRI k0 to CRI k M-1 to represent the resource indication of the M resources (that is, part 1 includes CRI k0 to CRI k M-1 ), the correspondence (or mapping relationship) between CRI k0 to CRI k M-1 and the M resources (such as the terminal device independently selects the M resources, or the M resources are indicated by the access network device (that is, M R = M), or M R of the M resources are indicated by the access network device (that is, M R < M)) can refer to the relevant descriptions in the above embodiments and will not be elaborated here.

[0522] In addition, when M R = M, the terminal device may also not report the CRI corresponding to the M resources (that is, part 1 does not include the Ks bitmap or group index value shown in Table 11A, or CRI k0 to CRI k shown in Table 11B M-1 ); at this time, part 1 may include one or more other rows of parameters in Table 11A except for the field where the Ks bitmap or group index value is located; or, part 1 may include one or more other rows of parameters in Table 11B except for the field where CRI k0 to CRI k M-1 is located.

[0523] When M R < M, the terminal device can separately report the CRI corresponding to the M R resources (that is, ), in addition, among the M resources, except for the M​R M - M resources other than R the CRI corresponding to a resource (i.e., ) can be represented by Ks - M R bitmap. That is, the resource indication of M resources is represented by and Ks - M R bitmap. At this time, part 1 in the CSI report (or, the CSI field) can include one or more rows of parameters as shown in Table 11C below. That is, Table 11A and / or Table 11B can be replaced by Table 11C below:

[0524] Table 11C

[0525] Among them, in Table 11C above, the implementation of Ks - M R bitmap can refer to the relevant description in the above embodiments. In addition, the implementation of other parameters in Table 11C is the same as that in Table 11A and / or Table 11B above. For details, please refer to the relevant description of Table 11A and / or Table 11B above, and will not be elaborated here.

[0526] Or, when M R < M, the terminal device may not report the CRI corresponding to these M R resources (i.e., ). That is, part 1 does not include In addition, the CRI corresponding to M - M R resources other than these M R resources (i.e., ) can be represented by Ks - M R bitmap; that is, among the resource indications of M resources, the resource indications of M - M R resources (i.e., M - M R resources other than these M R resources) are represented by Ks - M R bitmap, where the resource indications of M R resources do not need to be represented. At this time, part 1 can include one or more rows of parameters in Table 11C above except .

[0527] Or, when M R < M and the terminal device does not report the CRI corresponding to these M R resources (i.e., ), the CRI corresponding to M - M R resources other than these M R resources (i.e., ) can be reported separately. That is, the resource indication of M-M R resources (i.e., M-M R resources in the M resources except the M R resources indicated by the access network device) is represented by , where the resource indication of the M R resources does not need to be represented. At this time, the part 1 in the CSI report (or CSI field) can include one or more rows of parameters as shown in Table 11D, that is, Table 11A and / or Table 11B can be replaced by Table 11D as follows:

[0528] Table 11D

[0529] where the implementation of each parameter in Table 11D is the same as the implementation in Table 11A and / or Table 11B described above, and the specific implementation can be referred to the related description of Table 11A and / or Table 11B described above, which will not be repeated here.

[0530] In addition, in Table 11C and Table 11D described above, CRI is used to represent the M R resources indicated by the access network device (where M R <M). Wherein the M R resources can be randomly selected from the Ks resources by the access network device, or can be the top M R resources in priority in the Ks resources, or can be selected from the Ks resources in any other possible way, which is not limited by the embodiments of the present application. For example, when the M R resources are the top M R resources in priority in the Ks resources, CRI k0 can be considered as the CRI corresponding to the resource with the highest priority in the M R resources (or the CRI corresponding to the resource with the highest priority in the Ks resources), can be considered as the CRI corresponding to the resource with the lowest priority in the M R resources (or the CRI corresponding to the resource with the M R priority in the Ks resources).

[0531] In addition, in Table 11C and Table 11D described above, CRI is used to represent the M-M R resources in the M resources except the M R resources indicated by the access network device (where M R <M). Wherein the M-M RThe M resources can be selected from the Ks resources except the M resources R The M resources can be selected from the Ks resources except the M resources R The M resources can be selected from the Ks resources except the M resources R The M resources can be selected from the Ks resources except the M resources R The M resources can be selected from the Ks resources except the M resources R The M resources can be selected from the Ks resources except the M resources

[0532] It should be understood that the above Table 11A-Table 11D is only an example and should not be construed as limiting the embodiments of the present application. Any new table content obtained by reasonable deformation or supplement of the content in any of the Table 11A-Table 11D is within the protection scope of the embodiments of the present application.

[0533] In the third scenario, the first part in the CSI report includes one or more of the M values of the RI, the M values of the wideband CQI of the first TB, the M values of the subband differential CQI of the first TB, the common value of the number of selected spatial bases (i.e., the selected L value indication), and the M values of the K NZ .

[0534] In a possible implementation, the M values of each of the M first type parameters are arranged in the order of the resource indication of the M resources, and the M values of the same CSI parameter are arranged together, i.e., the M values of the same CSI parameter are adjacent in the first part. The resource indication of the M resources can be located before the M first type parameters (i.e., the combination of the M values of the RI, the M values of the wideband CQI of the first TB, the M values of the subband differential CQI of the first TB, the M values of the number of selected spatial bases, or one or more of the M values of the K NZ .

[0535] For example, when the resource indication of the M resources is represented by the bitmap or the group index value (e.g., the first group index value) of the resource group where the M resources are located, taking the Ks-bit bitmap (i.e., the bitmap with a size of Ks bits) as an example, the terminal device can arrange the Ks-bit bitmap or the group index value of the resource group where the M resources are located, the M values of the RI, the M values of the wideband CQI of the first TB, the M values of the subband differential CQI of the first TB, the selected L value indication, and the M values of the K NZ in the order of priority.

[0536] Specifically, taking the M resources including M CSI-RS resources as an example, the part 1 in the CSI report (or the CSI field) can include one or more rows of parameters shown in Table 12A:

[0537] Table 12A

[0538] For example, when the selected L value is determined by the terminal device, or indicated by the access network device, the terminal device can report the parameters in Table 12A in the order of the arrangement of the parameters in Table 12A (i.e., the order from top to bottom in the table), i.e., the terminal device can report the selected L value in Table 12A. Alternatively, when the selected L value is indicated by the access network device, the terminal device can also not report the selected L value. In this case, the terminal device can report the parameters in part 1 in the order of: the Ks bitmap or the group index value of the resource group in which the M resources are located, the M values of RI, the M values of wideband CQI of the first TB, the M values of subband differential CQI of the first TB, the M values of K NZ .

[0539] For example, taking the case where the M resources include M CSI-RS resources as an example, part 1 in the CSI report (or CSI field) can include one or more rows of parameters shown in Table 12B:

[0540] Table 12B

[0541] When the resource indications of the M resources are reported respectively, i.e., the resource indications of the M resources are represented by CRI k0~CRI k M-1 , CRI k0~CRI k M-1 may be located before one or more CSI parameters included in the M first type parameters.

[0542] Specifically, the terminal device can arrange in order: CRI k0~CRI k M-1 , the M values of RI, the M values of wideband CQI of the first TB, the M values of subband differential CQI of the first TB, the selected L value indication, the M values of K NZ .

[0543] For example, taking the case where the M resources include M CSI-RS resources as an example, part 1 in the CSI report (or CSI field) can include one or more rows of parameters shown in Table 12C:

[0544] Table 12C

[0545] Exemplarily, when the selected L value is determined by the terminal device or indicated by the access network device, the terminal device may report the parameters in Table 12C in the arrangement order of the parameters in Table 12C above (i.e., the order from top to bottom in the table), that is, in Table 12C, the terminal device may report the selected L value. Alternatively, when the selected L value is indicated by the access network device, the terminal device may also not report the selected L value. At this time, the parameters in part 1 reported by the terminal device may be arranged in sequence as follows: CRI k0 to CRI k M-1 , M values of RI, M values of wideband CQI of the first TB, M values of subband differential CQI of the first TB, K NZ M values of.

[0546] For example, taking the M resources including M CSI-RS resources as an example, part 1 in the CSI report (or, the CSI field) may include one or more rows of parameters shown in Table 12D:

[0547] Table 12D

[0548] Among them, the implementation of the parameters in Table 12A to Table 12D above is similar to the implementation of the relevant parameters in Table 10A and / or 10B above. Specifically, reference may be made to the relevant descriptions in Table 10A and / or 10B above, and details are not elaborated here.

[0549] In addition, CRI k0 to CRI k M-1 are the CRIs corresponding to the M resources respectively. That is to say, CRI k m is the CRI corresponding to one of the M resources. That is to say, the resource indication of the M resources (such as the Ks bitmap or group index value in Table 12A or Table 12B, or CRI k0 to CRI k shown in Table 12C or Table 12D M-1 ) is used to indicate CRI k0 to CRI k M-1 .

[0550] Specifically, the M resources corresponding to CRI k0 to CRI k M-1 may be determined by the terminal device's independent decision; or, they may also be determined by the terminal device based on the M R resources indicated by the access network device (for example, when M R = M, the M R resources are the M resources, and when M R < M, in addition to the M R resources, the terminal device may also independently determine M - M R resources).

[0551] Among them, when the terminal device passes CRI k0 to CRI k M-1 represents the resource indication of the M resources (that is, part 1 includes CRI k0 to CRI k M-1 ), the correspondence (or mapping relationship) between CRI k0 to CRI k M-1 and the M resources (such as the terminal device autonomously decides to select the M resources, or the M resources are indicated by the access network device (that is, M R = M), or M R of the M resources are indicated by the access network device (that is, M R < M)) can refer to the relevant descriptions in the above embodiments and will not be elaborated here.

[0552] In addition, when M R = M, the terminal device may also not report the resource indication of the M resources (that is, part 1 does not include the Ks bitmap or group index value in Table 12A or Table 12B, or CRI k0 to CRI k M-1 in Table 12C or Table 12D); at this time, part 1 may include one or more other rows of parameters in Table 12A and / or Table 12B except the fields where the Ks bitmap or group index value is located; or part 1 may include one or more other rows of parameters in Table 12C and / or Table 12D except the fields where CRI k0 to CRI k M-1 is located.

[0553] When M R = M, the terminal device may separately report the CRI corresponding to the M R resources (that is, ), and the CRI corresponding to the M - M R resources other than the M R resources (that is, ) can be represented by the Ks - M R bitmap. That is to say, the resource indication of the M resources is represented by and the Ks - M R bitmap. At this time, part 1 in the CSI report (or the CSI field) may include one or more rows of parameters shown in Table 12E below, that is, Table 12A or Table 12C can be replaced by Table 12E below:

[0554] Table 12E

[0555] The implementation of the selected L value in Table 12E is the same as that of the selected L value shown in the last one of Table 12A or Table 12C, and details can be referred to the related description of Table 12A or Table 12C, which will not be repeated here.

[0556] Alternatively, part 1 in the CSI report (or CSI field) can include one or more rows of parameters as shown in Table 12F, that is, Table 12B or Table 12D can be replaced by Table 12F as follows:

[0557] Table 12F

[0558] The implementation of the selected L value in Table 12F is the same as that of the selected L value shown in the last one of Table 12B or Table 12D, and details can be referred to the related description of Table 12B or Table 12D, which will not be repeated here.

[0559] In addition, in Table 12E and / or Table 12F, Ks-M R The implementation of the bitmap can refer to the related description in the above embodiments, and in addition, the implementation of other parameters in Table 12E and / or Table 12F is the same as that in Table 12A-Table 12D, and details can be referred to the related description of Table 12A-Table 12D, which will not be repeated here.

[0560] When M R The terminal device can also not report the CRI (i.e. ) corresponding to the M In addition, the CRI (i.e. R ) corresponding to the M-M R resources other than the M resources can be represented by a Ks-M R bitmap; that is, the resource indication of the M-M R resources (i.e. M-M R resources other than the M R resources) in the resource indication of the M R resources is represented by a Ks-M R bitmap, and the resource indication of the M R resources does not need to be represented. At this time, part 1 in the CSI report can include one or more rows of parameters in Table 12E or Table 12F except .

[0561] Alternatively, when M R , and the terminal device does not report the CRI (i.e. ) corresponding to the M R resources, the MR M-M other than the R CRI corresponding to the resources can be reported separately. That is, among the resource indications of the M resources, M-M R resources (that is, M-M R resources other than the R resources among the M resources) are indicated by , where the resource indication of the M R resources does not need to be indicated. At this time, part 1 in the CSI report (or, the CSI field) can include one or more rows of parameters as shown in Table 12G below. That is, Table 12A or Table 12C can be replaced by Table 12G below:

[0562] Table 12G

[0563] Among them, the implementation of the selected L value in Table 12G is the same as the implementation of the selected L value shown in the last of Table 12A or Table 12C above. Specifically, reference can be made to the relevant descriptions in Table 12A or Table 12C above, which will not be elaborated here.

[0564] Alternatively, part 1 in the CSI report (or, the CSI field) can include one or more rows of parameters as shown in Table 12H below. That is, Table 12B or Table 12D can be replaced by Table 12H below:

[0565] Table 12H

[0566] Among them, the implementation of the selected L value in Table 12H is the same as the implementation of the selected L value shown in the last of Table 12B or Table 12D above. Specifically, reference can be made to the relevant descriptions in Table 12B or Table 12D above, which will not be elaborated here.

[0567] Exemplarily, in Table 12G and / or Table 12H above, can be implemented by referring to the relevant descriptions in Table 12C and / or Table 12D above. In addition, the implementation of other parameters in Table 12G is the same as that in Table 12A to Table 12D above. Specifically, reference can be made to the relevant descriptions in Table 12A to Table 12D above, which will not be elaborated here.

[0568] In addition, in Table 12E to Table 12H above, is used to represent the CRI of the M R resources indicated by the access network device (where M R < M). Among them, the M RThe resource can be randomly selected by the access network device from the Ks resources, or it can be the top M resources with the highest priority among the Ks resources, or it can be selected from the Ks resources by any other possible means, which is not limited in the embodiments of this application. For example, when the M R resources are the top M resources with the highest priority among the Ks resources, the CRI k0 can be considered as the CRI corresponding to the resource with the highest priority among the M R resources (or, it is the CRI corresponding to the resource with the highest priority among the Ks resources), R and can be considered as the CRI corresponding to the resource with the lowest priority among the M R resources (or, it is the CRI corresponding to the M -th priority resource among the Ks resources). R Moreover, in the above Table 12E to Table 12H, R it is used to represent the CRI of the M - M

[0569] resources among the M resources excluding the M resources indicated by the access network device (where M R < M). Among them, the M - M R resources can be selected by the terminal device from the Ks - M R resources among the Ks resources excluding the M R resources, or it can be the top M - M R resources with the highest priority among the Ks - M R resources, or it can be selected from the Ks - M R resources by any other possible means, which is not limited in the embodiments of this application. R In a possible implementation, when the access network device indicates M R resources (where M

[0570] < M), for the M first - type parameters, the terminal device can also first report the CSI parameters corresponding to the CRI of the M R resources (or, among the values of the CSI parameters, the values corresponding to the CRI of the M R resources), and then report the CSI parameters corresponding to the CRI of the M - M R resources (or, among the values of the CSI parameters, the values corresponding to the CRI of the M - M R resources). R That is to say, the terminal device first reports the M R resources, and then reports the M - M

[0571] resources. RThe CSI parameters associated with (or corresponding to) the CRI of a resource (i.e., among the M first-type parameters, the one that corresponds to the M resources) R The CRI associated with each resource (or, the corresponding CSI parameter value) is then reported to MM. R The CSI parameters associated with (or corresponding to) the CRI of a resource (i.e., among the M first-type parameters, those corresponding to the M M) R The CRI associated with (or, corresponding to) the value of the CSI parameter for each resource.

[0572] At this point, the order of the M first-type parameters in part 1 is also as follows: among the M values ​​of RI, those corresponding to M... R M corresponding to each resource R Among the M values ​​of the first TB broadband CQI, M is the only one that can be considered. R M corresponding to each resource R Among the M values ​​of the first TB subband differential CQI, M... R M corresponding to each resource R Individual values, selected L value indication (or, the selected L value indication is not reported, i.e., the selected L value indication is not included in the CSI report), K NZ Among the M values, M R M corresponding to each resource R Among the M values ​​of RI, MM R MM corresponding to each resource R Among the M values ​​of the first TB broadband CQI, and MM R MM corresponding to each resource R Among the M values ​​of the first TB subband differential CQI, and MM R MM corresponding to each resource R Each value, K NZ Among the M values, the one that matches MM R MM corresponding to each resource R Each value can be selected.

[0573] Therefore, when the terminal device reports the M individually R The CRI corresponding to each resource (i.e., part 1 includes) ), and MM R The CRI corresponding to each resource is... When presenting, part 1 of the CSI report may include one or more lines of parameters as shown in Table 12I below, that is, Table 12E above can be replaced with Table 12I below:

[0574] Table 12I

[0575] Wherein, the implementation of each parameter in Table 12J can refer to the related description in Table 12F, which will not be repeated here.

[0576] Alternatively, the part 1 in the CSI report can include one or more parameters shown in the following Table 12J, i.e., the above Table 12F can be replaced by the following Table 12J:

[0577] Table 12J

[0578] Wherein, the implementation of each parameter in Table 12J can refer to the related description in Table 12F, which will not be repeated here.

[0579] When the terminal device does not report the CRI corresponding to the M R resources (i.e., the part 1 does not include ), and the CRI corresponding to the M-M R resources is indicated by Table, the part 1 in the CSI report can include one or more parameters shown in the following Table 12K, i.e., the above Table 12G can be replaced by the following Table 12K:

[0580] Table 12K

[0581] Wherein, the implementation of each parameter in Table 12K can refer to the related description in Table 12G, which will not be repeated here.

[0582] Alternatively, the part 1 in the CSI report can include one or more parameters shown in the following Table 12L, i.e., the above Table 12H can be replaced by the following Table 12L:

[0583] Table 12L

[0584] Wherein, the implementation of each parameter in Table 12L can refer to the related description in Table 12H, which will not be repeated here.

[0585] It should be understood that the above Tables 12A-12L are only exemplary and should not be limited to the embodiments of the present application. The new table content obtained by reasonable deformation or supplement of the content in any one of Tables 12A-12L belongs to the protection scope of the embodiments of the present application.

[0586] In another possible implementation, the M values of each parameter in the M first type parameters are arranged in the order of the resource indication of the M resources, and the values of the CSI parameters corresponding to the same CRI are arranged together, i.e., the values of the CSI parameters corresponding to the same CRI are adjacent in the first part.

[0587] In other words, the M first-class parameters are arranged in the order of the resource indications of the M resources, including: CRI k m-1 The value of each corresponding CSI parameter is located in CRI k. m Before the value of each corresponding CSI parameter, m = 1, 2, ..., M-1. For example, the CRI of the third resource is located before the value of the CSI parameter corresponding to the CRI of the third resource, and the value of the CSI parameter corresponding to the CRI of the third resource is located before the CRI of the fourth resource. The M resources include the third resource and the fourth resource. The value of the CSI parameter corresponding to the CRI of the third resource is the value of the CRI of the third resource among the multiple values ​​of each CSI parameter.

[0588] Optionally, the CSI parameter corresponding to one of the M resources includes a first value, and the CRI value corresponding to that resource among the M values ​​of RI, the CRI value corresponding to that resource among the M values ​​of CQI in the first TB, the CRI value corresponding to that resource among the M values ​​of subband differential CQI in the first TB, or K NZ The CRI value of a resource is one or more of the M possible values; the CSI parameter value corresponding to the CRI of any other resource among the M possible values ​​includes the CRI value of that resource among the M possible values ​​of RI, the CRI value of that resource among the M possible values ​​of CQI in the first TB, the CRI value of that resource among the M possible values ​​of CQI in the subband differential CQI of the first TB, or K NZ The first value is one or more of the values ​​corresponding to the CRI of any of the M resources. Alternatively, the first value is located after the CSI parameter values ​​corresponding to the CRI of the M resources.

[0589] For example, the selected L value indicates the relationship between CRI k0 and CRI k. M-1 Correlation; terminal devices and network devices can pre-determine the location of the selected L value indicator. For example, the selected L value indicator can be associated with CRI k0 to CRI k M-1 The CSI parameters corresponding to any CRI are arranged together (taking the selected L value indicator and the CSI parameters corresponding to CRI k0 as an example, in this case, the selected L value indicator can be located after the value of the subband differential CQI of the first TB corresponding to CRI k0, and located at the K corresponding to CRI k0). NZ (before the value of L); or, the selected L value can also be the value of each of the other CSI parameters among the M first-class parameters besides the value of the number of selected spatial bases (i.e., the value of RI, the value of the broadband CQI of the first TB, the value of the subband differential CQI of the first TB, and K). NZ (After the value of ).

[0590] Optionally, the resource indication of the M resources can be located before one or more CSI parameters; or, the CRI of the third resource is located before the value of the CSI parameter corresponding to the CRI of the third resource, and the value of the CSI parameter corresponding to the CRI of the third resource is located before the CRI of the fourth resource, the M resources include the third resource and the fourth resource, and the value of the CSI parameter corresponding to the CRI of the third resource is a value corresponding to the CRI of the third resource in multiple values in each CSI parameter.

[0591] For example, when the CRIs corresponding to the M resources are indicated by a bit map or a group index value (such as a first group index value) of a resource group in which the M resources are located, taking a Ks-bit map (i.e., a bit map with a size of Ks bits) as an example, if the selected L value indicates that the CSI parameters corresponding to the CRI k0 are arranged together, the terminal device can arrange, in the order: the Ks-bit map or the group index value of the resource group in which the M resources are located, the value of the RI corresponding to the CRI k0, the value of the wideband CQI of the first TB corresponding to the CRI k0, the value of the subband differential CQI of the first TB corresponding to the CRI k0, the selected L value indication, and the value of the K NZ corresponding to the CRI k0, the value of the RI corresponding to the CRI k1, the value of the wideband CQI of the first TB corresponding to the CRI k1, the value of the subband differential CQI of the first TB corresponding to the CRI k1, the value of the K NZ corresponding to the CRI k1; and so on, finally arranging the value of the RI corresponding to the CRI k M-1 , the value of the wideband CQI of the first TB corresponding to the CRI k M-1 , the value of the subband differential CQI of the first TB corresponding to the CRI k M- 1, and the value of the K M-1 corresponding to the CRI k NZ 1.

[0592] Specifically, taking an example in which the M resources include M CSI-RS resources, the part 1 in the CSI report (or CSI field) can include one or more parameters shown in Table 13A:

[0593] Table 13A

[0594] For example, when the selected L value is determined by the terminal device or indicated by the access network device, the terminal device can report the parameters in Table 13A in the order shown in the table above (i.e., from top to bottom). That is, in Table 13A, the terminal device can report the selected L value. Alternatively, when the selected L value is indicated by the access network device, the terminal device may not report the selected L value. In this case, the parameters reported by the terminal device in part 1 can be arranged as follows: the group index value of the resource group containing the Ks bitmap or M resources, the RI value corresponding to CRI k0, the broadband CQI value of the first TB corresponding to CRI k0, the subband differential CQI value of the first TB corresponding to CRI k0, and the K value corresponding to CRI k0. NZ The values ​​of , the values ​​of RI corresponding to CRI k1, the values ​​of broadband CQI for the first TB corresponding to CRI k1, the values ​​of subband differential CQI for the first TB corresponding to CRI k1, and the values ​​of K corresponding to CRI k1. NZ The values ​​of , ..., CRI k M-1 The corresponding RI value, CRI k M-1 The corresponding CQI value and CRI k for the first TB of broadband M-1 The corresponding subband differential CQI value for the first TB, and CRI k M-1 Corresponding K NZ The value of .

[0595] For example, taking M resources including M CSI-RS resources as an example, part 1 of the CSI report (or CSI field) may include one or more rows of parameters as shown in Table 13B:

[0596] Table 13B

[0597] When the resource indications of M resources are reported separately, that is, when the resource indications of M resources are reported through CRI k0 to CRI k M-1 When represented, CRI k0~CRI k M-1 It can be located in CRI k0 to CRI k M-1 It can be located before one or more CSI parameters included in the M first-class parameters, or, CRI k m Located in CRI k m Before the values ​​of the corresponding CSI parameters.

[0598] Specifically, using CRI k m Located in CRI k mThe values of the corresponding CSI parameters are taken as an example. If the selected L value indicates that the CSI parameters corresponding to CRI k0 are arranged together, the terminal device can arrange them in the following order: CRI k0, the value of the RI corresponding to CRI k0, the value of the wideband CQI of the first TB corresponding to CRI k0, the value of the subband differential CQI of the first TB corresponding to CRI k0, the selected L value, and the value of K NZ corresponding to CRI k0, CRI k1, the value of the RI corresponding to CRI k1, the value of the wideband CQI of the first TB corresponding to CRI k1, the value of the subband differential CQI of the first TB corresponding to CRI k1, the value of K NZ corresponding to CRI k1, …, and finally arrange CRI k M-1 , the value of the RI corresponding to CRI k M-1 , the value of the wideband CQI of the first TB corresponding to CRI k M-1 , the value of the subband differential CQI of the first TB corresponding to CRI k M-1 , and the value of the subband differential CQI of the first TB corresponding to CRI k M-1 , and the value of K NZ corresponding to CRI k0.

[0599] For example, taking M resources including M CSI-RS resources as an example, part 1 in the CSI report (or CSI field) can include one or more rows of parameters shown in Table 13C:

[0600] Table 13C

[0601] For example, when the selected L value is determined by the terminal device or indicated by the access network device, the terminal device can report the parameters in Table 12C by the arrangement mode of the parameters in Table 12C (i.e., the order from top to bottom in the table), i.e., in Table 12C, the terminal device can report the selected L value. Alternatively, when the selected L value is indicated by the access network device, the terminal device can also not report the selected L value. At this time, the terminal device can arrange the parameters in part 1 in the following order: CRI k0, the value of the RI corresponding to CRI k0, the value of the wideband CQI of the first TB corresponding to CRI k0, the value of the subband differential CQI of the first TB corresponding to CRI k0, and the value of K NZ corresponding to CRI k0, CRI k1, the value of the RI corresponding to CRI k1, the value of the wideband CQI of the first TB corresponding to CRI k1, the value of the subband differential CQI of the first TB corresponding to CRI k1, the value of K NZ corresponding to CRI k1; and finally arrange CRI kM-1 , CRI k M-1 The corresponding RI value, CRI k M-1 The corresponding wideband CQI value of the first TB, CRI k M-1 The corresponding sub-band differential CQI value of the first TB, and the corresponding sub-band differential CQI value of the first TB, and CRI k M-1 The corresponding K NZ value.

[0602] For example, taking M resources including M CSI-RS resources as an example, part 1 in the CSI report (or, the CSI field) may include one or more lines of parameters shown in Table 13D:

[0603] Table 13D

[0604] Among them, the implementation of each parameter in the above Table 13A to Table 13D is similar to the implementation of the relevant parameters in the above Table 12A to Table 12D. Specifically, it can refer to the relevant descriptions in the above Table 12A to Table 12D, which will not be elaborated here.

[0605] Exemplarily, CRI k0 to CRI k M-1 are the CRIs corresponding to the M resources respectively. That is to say, CRI k m is the CRI corresponding to one of the M resources. That is to say, the resource indication of the M resources (such as the Ks bitmap or group index value in Table 13A or Table 13B, or, CRI k0 to CRI k shown in Table 13C or Table 13D M-1 ) is used to indicate CRI k0 to CRI k M-1 .

[0606] Specifically, the M resources corresponding to CRI k0 to CRI k M-1 can be determined by the terminal device independently; or, it can also be determined by the terminal device based on the M resources indicated by the access network device (for example, when M R = M, the M R resources are the M resources. When M R < M, in addition to the M R resources, the terminal device can also independently determine M - M R resources) R

[0607] Among them, when the terminal device represents the resource indication of the M resources through CRI k0 to CRI k M-1 (that is, part 1 includes CRI k0 to CRI k M-1 ​), CRI k0~CRI k M-1 The corresponding relationship (or mapping relationship) between the M resources (e.g., the M resources are selected by the terminal device autonomously, or the M resources are indicated by the access network device (i.e., M R =M), or M R resources of the M resources are indicated by the access network device (i.e., M R <M) ) can be referred to the related description in the above embodiments, which will not be repeated here.

[0608] In addition, when M R =M, the terminal device can also not report the CRIs corresponding to the M resources (i.e., the Ks bitmap or group index value shown in Table 13A or Table 13B is not included in part 1, or the CRI k0~CRI k M-1 ) shown in Table 13C or Table 13D) ; at this time, part 1 can include one or more rows of parameters in Table 13A or Table 13B above except the field of Ks bitmap or group index value; or part 1 can include one or more rows of parameters in Table 13C or Table 13D above except the field of CRI k0~CRI k M-1 ).

[0609] When M R <M, the terminal device can report the CRIs corresponding to the M R resources (i.e. ) separately, in addition, the CRIs corresponding to the M-M R resources of the M resources except the M R resources (i.e. ) can be represented by Ks-M R bitmap. That is, the resource indication of the M resources is represented by and Ks-M R bitmap. At this time, part 1 in the CSI report (or CSI field) can include one or more rows of parameters as shown in Table 13E below, that is, Table 13A or Table 13C can be replaced by Table 13E as follows:

[0610] Table 13E

[0611] Wherein, the implementation of the selected L value in Table 13E is the same as the implementation of the selected L value shown in the last Table 13A or Table 13C, which can be referred to the related description of Table 13A or Table 13C above, which will not be repeated here.

[0612] Alternatively, the part 1 in the CSI report (or the CSI field) can include one or more rows of parameters as shown in Table 13F, that is, Table 13B or Table 13D can be replaced by Table 13F as follows:

[0613] Table 13F

[0614] wherein the implementation of the selected L value in Table 13F is the same as that of the selected L value shown in the last row of Table 13B or Table 13D, and specific implementation can be referred to the related description of Table 13B or Table 13D, which will not be repeated here.

[0615] In addition, in Table 13E and / or Table 13F, Ks-M R The implementation of the bitmap can be referred to the related description in the above embodiments, and in addition, the implementation of other parameters in Table 13E and / or Table 13F is the same as that in Table 13A-Table 13D, and specific implementation can be referred to the related description of Table 13A-Table 13D, which will not be repeated here.

[0616] When M R The terminal device can also not report the CRI (i.e. R ) corresponding to the M resources, that is, the part 1 does not include In addition, the CRI (i.e. R ) corresponding to the M-M R resources other than the M resources can be represented by a Ks-M R bitmap; that is, the resource indication of the M-M R resources (i.e. the M-M R resources other than the M R resources) in the resource indication of the M resources is represented by a Ks-M R bitmap, wherein the resource indication of the M R resources does not need to be represented. At this time, the part 1 in the CSI report can include one or more rows of parameters in Table 13E or Table 13F except .

[0617] Alternatively, when M R <M, and the terminal device does not report the CRI (i.e. R ) corresponding to the M resources, the CRI (i.e. ) corresponding to the M-M R resources other than the M R resources can be reported separately. That is, the resource indication of the M-MR resources (i.e., M-M R resources of the M R resources) is not required to be indicated. In this case, part 1 in the CSI report (or CSI field) can include one or more rows of parameters as shown in Table 13G below, that is, Table 13A or Table 13C can be replaced by Table 13G below: Table 13G R

[0618] Table 13G

[0619] The implementation of the selected L value in Table 13G is the same as that of the selected L value shown in the last row of Table 13A or Table 13C, and details can be referred to the related description of Table 13A or Table 13C, which will not be repeated here.

[0620] Alternatively, part 1 in the CSI report (or CSI field) can include one or more rows of parameters as shown in Table 13H below, that is, Table 13B or Table 13D can be replaced by Table 13H below:

[0621] Table 13H

[0622] The implementation of the selected L value in Table 13H is the same as that of the selected L value shown in the last row of Table 13B or Table 13D, and details can be referred to the related description of Table 13B or Table 13D, which will not be repeated here.

[0623] For example, the implementation of each parameter in Table 13G and / or Table 13H is the same as that in Table 13A-Table 13D, and details can be referred to the related description of Table 13A-Table 13D, which will not be repeated here.

[0624] In addition, in Table 13E-Table 13H above, CRI is used to indicate the M R resources indicated by the access network device (wherein M R <M). The M R resources can be randomly selected from the Ks resources by the access network device, or can be the top M R resources in priority in the Ks resources, or can be selected from the Ks resources in any other possible way, which is not limited by the embodiments of the present application. For example, when the M R resources are the top M R ​When there are M resources, CRI k0 can be considered as the CRI corresponding to the resource with the highest priority among these M R resources (or, it is the CRI corresponding to the resource with the highest priority among Ks resources). It can be considered as the CRI corresponding to the M R resources in ascending order of the CRI corresponding to the resource with the lowest priority (or, it is the CRI corresponding to the resource with the Mth R priority among Ks resources).

[0625] Furthermore, in the above Table 13E to Table 13H, it is used to represent the CRI of the M-M R resources among the M resources excluding the M R resources indicated by the access network device (where M R <M). Among them, the M-M R resources can be selected by the terminal device from the Ks-M R resources among the Ks resources excluding these M R resources, or, they can also be the top M-M R resources with the highest priority among the Ks-M R resources, or, they can also be selected from the Ks-M R resources through any other possible means, which is not limited in the embodiments of the present application.

[0626] It should be understood that the above Table 13A to Table 13H are only for illustrative purposes and should not be used to limit the embodiments of the present application. The new table content obtained by reasonable deformation or supplementation of the content in any one of Table 13A to Table 13H belongs to the protection scope of the embodiments of the present application.

[0627] Scenario 4: The first part in the CSI report includes one or more of the M values of RI, the M values of the broadband CQI of the first TB, the M values of the subband differential CQI of the first TB, the M values of the number of selected spatial domain bases, and the index values corresponding to the combinations of the M values of K NZ (that is, the indication of the combination of K NZ , such as the third group of index values).

[0628] In a possible implementation, the M values of each parameter among the M first-type parameters are arranged in the order of the resource indication of the M resources, and the M values of the same CSI parameter are arranged together, that is, the M values of the same CSI parameter are adjacent in the first part. The resource indication of the M resources can be located among the M first-type parameters (that is, the M values of RI, the M values of the broadband CQI of the first TB, the M values of the subband differential CQI of the first TB, the index values corresponding to the combinations of the M values of the number of selected spatial domain bases, or KNZ before the M values of the first TB wideband CQI.

[0629] For example, when the resource indication of the M resources is indicated by the bitmap or the group index value (e.g., the first group index value) of the resource group where the M resources are located, and the bitmap is a Ks-bit bitmap (i.e., a bitmap with a size of Ks bits), the terminal device can arrange the following in the order of priority: the Ks-bit bitmap or the group index value of the resource group where the M resources are located, the M values of the RI, the M values of the first TB wideband CQI, the M values of the first TB subband differential CQI, the M values of the number of selected spatial domain bases (i.e., the indication of the selected L0 values ~ the indication of the selected L1 values), and the indication of the combination of Ks, K1, and K2. M-1 NZ

[0630] Specifically, taking an example in which the M resources include M CSI-RS resources, the part 1 in the CSI report (or CSI field) can include one or more rows of parameters shown in Table 14A:

[0631] Table 14A

[0632] When the resource indication of the M resources is reported separately, i.e., the resource indication of the M resources is indicated by CRI k0~CRI k M-1 , the CRI k0~CRI k M-1 may be located before one or more CSI parameters included in the M first type parameters.

[0633] Specifically, the terminal device can arrange the following in the order of priority: CRI k0~CRI k M-1 , the M values of the RI, the M values of the first TB wideband CQI, the M values of the first TB subband differential CQI, the M values of the number of selected spatial domain bases (i.e., the indication of the selected L0 values ~ the indication of the selected L1 values), and the indication of the combination of Ks, K1, and K2. M-1 NZ

[0634] For example, taking an example in which the M resources include M CSI-RS resources, the part 1 in the CSI report (or CSI field) can include one or more rows of parameters shown in Table 14B:

[0635] Table 14B

[0636] In the above Table 14A and / or Table 14B, the implementation of each parameter in Table 14A and / or Table 14B is similar to the implementation of the related parameter in the above Table 8A and / or Table 8B, and specific reference can be made to the related description of the above Table 8A and / or Table 8B, which will not be repeated here.​​​​

[0637] For example, CRI k0~CRI k M-1 , that is, CRI k m corresponding to the M resources. That is, the resource indication (such as the Ks bitmap or group index value in Table 14A, or CRI k0~CRI k M-1 ) of the M resources is used to indicate CRI k0~CRI k M-1 .

[0638] Specifically, CRI k0~CRI k M-1 correspond to the M resources, which can be determined by the terminal device autonomously; or, the M R resources can be determined by the terminal device based on the indication of the access network device (for example, when M R =M, the M R resources are the M resources, and when M R <M, the terminal device can autonomously determine M-M R resources in addition to the M R resources.

[0639] When the terminal device indicates the resource indication of the M resources (that is, part 1 includes CRI k0~CRI k M-1 ) by CRI k0~CRI k M-1 , the corresponding relationship (or mapping relationship) between CRI k0~CRI k M-1 and the M resources (for example, the M resources are selected by the terminal device autonomously, or the M R resources are indicated by the access network device (that is, M R =M), or M R resources in the M resources are indicated by the access network device (that is, M R <M)) can refer to the related description in the above embodiments, which will not be repeated here.

[0640] In addition, when M R =M, the terminal device can also not report the resource indication of the M resources (that is, part 1 does not include the Ks bitmap or group index value in Table 14A, or CRI k0~CRI k M-1 in Table 14B); at this time, part 1 can include one or more rows of parameters in Table 14A above except the field of Ks bitmap or group index value; or, part 1 can include one or more rows of parameters in Table 14B above except the field of CRI k0~CRI k M-1 .

[0641] When M R < M, the terminal device can report the CRI corresponding to this M resource alone (i.e., R ), and the CRI corresponding to the M - M resources other than this M resource among the M resources (i.e., ) can be indicated by the Ks - M R bitmap. That is to say, the resource indication of the M resources is represented by R and the Ks - M bitmap. At this time, part 1 in the CSI report (or rather, the CSI field) can include one or more rows of parameters as shown in Table 14C below. That is to say, Table 14A and / or 14B can be replaced by Table 14C below: ), and the Ks - M bitmap. That is to say, the resource indication of the M resources is represented by R and the Ks - M

[0642] bitmap. At this time, part 1 in the CSI report (or rather, the CSI field) can include one or more rows of parameters as shown in Table 14C below. That is to say, Table 14A and / or 14B can be replaced by Table 14C below:Table 14C

[0643] Among them, in the above Table 14C, the implementation of the Ks - M R bitmap can refer to the relevant description in the above embodiment. In addition, the implementation of other parameters in Table 14C is the same as that in the above Table 14A and / or Table 14B. For details, please refer to the relevant description in the above Table 14A and / or Table 14B, which will not be elaborated here.

[0644] When M R < M, the terminal device can also not report the CRI corresponding to this M resource (i.e., R ), that is to say, part 1 does not include . In addition, the CRI corresponding to the M - M resources other than this M resource among the M resources (i.e., ) can be represented by the Ks - M R bitmap; that is to say, the resource indication of the M - M R resources (i.e., the M - M resources other than this M resource among the M resources) in the resource indication of the M resources is represented by the Ks - M bitmap, where the resource indication of the M R resources does not need to be represented. At this time, part 1 in the CSI report can include one or more rows of parameters in the above Table 14C except R ). R resources) in the resource indication of the M resources is represented by the Ks - M R bitmap, where the resource indication of the M R resources does not need to be represented. At this time, part 1 in the CSI report can include one or more rows of parameters in the above Table 14C except R . ).

[0645] Or, when M R < M, and the terminal device does not report the CRI corresponding to this M resource (i.e., R ) ) can be reported separately. That is, the resource indication of the M-M R resources (i.e., the M-M R resources other than the M ) can be reported separately. That is, the resource indication of the M-M R resources (i.e., the M-M R resources other than the M R resources) in the resource indication of the M resources is represented by , where the resource indication of the M R resources does not need to be represented. At this time, the part 1 in the CSI report (or the CSI field) can include one or more rows of parameters as shown in Table 14D, that is, Table 14A and / or 14B can be replaced by Table 14D as follows:

[0646] Table 14D

[0647] wherein the implementation of each parameter in Table 14D is the same as the implementation in Table 14A and / or Table 14B described above, and the specific implementation can be referred to the related description of Table 14A and / or Table 14B described above, which will not be repeated here.

[0648] In addition, in Table 14C and Table 14D described above, CRI of the M R resources indicated by the access network device (wherein M R < M). Wherein the M R resources can be randomly selected from the Ks resources by the access network device, or can be the top M R resources in priority in the Ks resources, or can be selected from the Ks resources by any other possible way, which is not limited by the embodiments of the present application. For example, when the M R resources are the top M R resources in priority in the Ks resources, CRI k0 can be considered as the CRI corresponding to the resource with the highest priority in the M R resources (or the CRI corresponding to the resource with the highest priority in the Ks resources), can be considered as the CRI corresponding to the resource with the lowest priority in the M R resources (or the CRI corresponding to the resource with the M R priority in the Ks resources).

[0649] Furthermore, in Table 14C and Table 14D described above, CRI of the M R resources in the M resources other than the M R resources indicated by the access network device. Wherein the M R resources can be randomly selected from the Ks resources by the access network device, or can be the top M R resources in priority in the Ks resources, or can be selected from the Ks resources by any other possible way, which is not limited by the embodiments of the present application. For example, when the M R resources are the top M R resources in priority in the Ks resources, CRI k0 can be considered as the CRI corresponding to the resource with the highest priority in the M R resources (or the CRI corresponding to the resource with the highest priority in the Ks resources), can be considered as the CRI corresponding to the resource with the lowest priority in the M R resources (or the CRI corresponding to the resource with the M R priority in the Ks resources).R resources (where M R <M) except for the M - M R resources' CRI. Among them, the M - M R resources can be selected by the terminal device from the Ks resources except for the M R resources, that is, Ks - M R resources, or can also be the top M - M R resources with the highest priority among the Ks - M R resources, or can also be selected from the Ks - M R resources in any other possible way, which is not limited in the embodiments of this application.

[0650] In a possible implementation, when the access network device indicates M R resources (where M R <M), for M first - type parameters, the terminal device can also first report the CSI parameters corresponding to the CRI of the M R resources (or rather, among the values of the CSI parameters, the values corresponding to the CRI of the M R resources), and then report the CSI parameters corresponding to the CRI of the M - M R resources (or rather, among the values of the CSI parameters, the values corresponding to the CRI of the M - M R resources).

[0651] That is to say, the terminal device first reports the CSI parameters associated (or corresponding) with the CRI of the M R resources (that is, the values of the CSI parameters associated (or corresponding) with the CRI of the M R resources among the M first - type parameters), and then reports the CSI parameters associated (or corresponding) with the CRI of the M - M R resources (that is, the values of the CSI parameters associated (or corresponding) with the CRI of the M - M R resources among the M first - type parameters).

[0652] At this time, the arrangement order of the M first - type parameters in part 1 is as follows: the M R values corresponding to the M R resources among the M values of RI, the M R values corresponding to the M R resources among the M values of the wide - band CQI of the first TB, the M<000舍, R R values corresponding to the M M-1 It should be noted that there seems to be an incomplete or incorrect part in the original text at line 55 where "000舍" is present. This might need to be corrected in the original for a more accurate translation.The value indication) in M R M corresponding to each resource R Each value, K NZ The combination of the indication, ..., RI, and the M values ​​of MM R MM corresponding to each resource R Among the M values ​​of the first TB broadband CQI, and MM R MM corresponding to each resource R Among the M values ​​of the first TB subband differential CQI, and MM R MM corresponding to each resource R Among the M values ​​of the selected spatial basis and the M values ​​of the selected spatial basis, the one value is the same as the M value of the selected spatial basis. R MM corresponding to each resource R Each value can be selected.

[0653] Therefore, when the terminal device reports the M individually R The CRI corresponding to each resource (i.e., part 1 includes) ), and MM R The CRI corresponding to each resource is... When presenting, part 1 of the CSI report may include one or more lines of parameters as shown in Table 14E below, that is, Table 14C above can be replaced with Table 14E below:

[0654] Table 14E

[0655] The implementation of each parameter in Table 14E can be referred to the relevant description in Table 14C above, and will not be repeated here.

[0656] When the terminal device does not report this M R The CRI corresponding to each resource (i.e., part 1 excluding) ), and MM R The CRI corresponding to each resource is... When presenting, part 1 of the CSI report may include one or more lines of parameters as shown in Table 14F below, that is, Table 14D above can be replaced with Table 14F below:

[0657] Table 14F

[0658] The implementation of the relevant parameters in Table 14F can be referred to the implementation of the relevant parameters in Table 14D above, and will not be repeated here.

[0659] It should be understood that the above Tables 14A-14F are only illustrative and should not be construed as limiting the embodiments of the present application. Any new table content obtained by reasonable deformation or supplement of the content in any of the Tables 14A-14F is within the protection scope of the embodiments of the present application.

[0660] In another possible implementation, the M values of each of the M first type parameters are arranged in the order of the resource indications of the M resources, and the values of the CSI parameters corresponding to the same CRI are arranged together, i.e., the values of the CSI parameters corresponding to the same CRI are adjacent in the first part.

[0661] That is, the M first type parameters are arranged in the order of the resource indications of the M resources, including: the CRI k m-1 The value of the corresponding CSI parameter is located before the CRI k m The value of the corresponding CSI parameter is located before the CRI k

[0662] Optionally, the CSI parameter corresponding to one of the M resources includes one or more of a third group of index values, the value of the CR...

Claims

A method of information feedback, characterized in that The method is suitable for a terminal device, and the method comprises: receiving Ks reference signals from an access network device; determining, according to the Ks parameter signals, a channel state information (CSI) report corresponding to M reference signals in the Ks parameter signals; sending the CSI report to the access network device; wherein the CSI report indicates one or more of the following: resource indications of M resources corresponding to the M reference signals, M first-type parameters corresponding to the M resources, M second-type parameters corresponding to the M resources, and a priority order of the M resources; in the CSI report, the M first-type parameters are arranged in the order of the resource indications of the M resources, and the M second-type parameters are arranged in the priority order of the M resources, Ks and M being positive integers greater than 1. The method of claim 1, wherein Before the determining, according to the Ks parameter signals, the CSI report corresponding to M reference signals in the Ks parameter signals, the method further comprises: receive first indication information, the first indication information being used for indicating M R resources, the M R resources including the M R resources, and M R being a positive integer less than or equal to M. the CSI report indicates the resource indications of the M resources, comprising: the CSI report comprises M channel state information reference signal resource identifications (CRIs), and the M CRIs correspond to the M resources respectively; wherein, when the M R resources are the first M R resources with the highest priority among the M R resources, in the CSI report, M R CRIs corresponding to the M R resources are located before M-M R CRIs corresponding to the M-M R resources, the M-M R resources are resources other than the M resources among the M When the M R resources are not the top M R resources in priority among the M resources, in the CSI report, the M CRIs are arranged in the order of priority of the M resources. The method of claim 1, wherein Before the determining, according to the Ks parameter signals, the CSI report corresponding to M reference signals in the Ks parameter signals, the method further comprises: receive first indication information, the first indication information being used for indicating M R resources, the M R resources including the M R resources, and M R being a positive integer less than or equal to M. the CSI report indicates the resource indications of the M resources, comprising: The CSI report includes a bit bitmap of Ks-M R bits and a CRI corresponding to each of the M R resources, one bit in the bit bitmap corresponds to one CRI, the one CRI corresponds to one of the Ks-M R resources, a value of the one bit is used to indicate whether the M resources include the resource corresponding to the one bit, and the Ks-M R resources are resources in the Ks resources other than the M R resources. A method of information feedback, characterized in that The method is suitable for an access network device, and the method comprises: sending Ks reference signals to a terminal device; receiving a channel state information (CSI) report from the terminal device, the CSI report being determined according to the Ks reference signals; wherein the CSI report indicates one or more of the following: resource indications of M resources corresponding to M reference signals in the Ks reference signals, M first-type parameters corresponding to the M resources, M second-type parameters corresponding to the M resources, and a priority order of the M resources; in the CSI report, the M first-type parameters are arranged in the order of the resource indications of the M resources, and the M second-type parameters are arranged in the priority order of the M resources, Ks and M being positive integers greater than 1. The method according to claim 4, characterized in that Before the receiving the CSI report from the terminal device, the method further comprises: Send a first indication message, the first indication message being used to instruct M R M resources, the M resources include the M R One resource, and M R A positive integer less than or equal to M; the CSI report indicates the resource indications of the M resources, comprising: the CSI report comprises M channel state information reference signal resource identifications (CRIs), and the M CRIs correspond to the M resources respectively; Wherein, when the M R The M resources are the top M resources with the highest priority among the M resources. R When a resource is mentioned, in the CSI report, the M... R M corresponding to each resource R CRI is located in MM R MM corresponding to each resource R Before one CRI, the MM R The resource is the M resources excluding M. R Resources other than those resources; When the M R resources are not the top M R resources in priority among the M resources, in the CSI report, the M CRIs are arranged in the order of priority of the M resources. The method according to claim 4, characterized in that Before the receiving the CSI report from the terminal device, the method further comprises: transmit first indication information, where the first indication information is used to indicate M R resources, and M R resources are resources in the Ks resources corresponding to the Ks reference signals, and M R is a positive integer less than or equal to M. the CSI report indicates the resource indications of the M resources, comprising: The CSI report includes a bit bitmap of Ks-M R bits and CRIs corresponding to the M R resources respectively, one bit in the bit bitmap corresponds to one CRI, the one CRI corresponds to one resource in the Ks-M R resources, a value of the one bit is used to indicate whether the M resources include the resource corresponding to the one bit, the Ks-M R resources are resources in the Ks resources except the M R resources. The method according to claim 1 or 4, characterized in that the CSI report indicates the resource indications of the M resources, comprising: the CSI report comprises a first group of index values, and the first group of index values are associated with CRIs corresponding to the M resources respectively. The method according to any one of claims 1 to 7, characterized in that When the order of the resource indications of the M resources comprises the priority order of the M resources, the CSI report indicates one or more of: the resource indications of the M resources, the M first-type parameters, or the M second-type parameters. The method of claim 1, wherein The CSI report indicates the resource indications of the M resources, comprising: The CSI report comprises a bitmap of Ks bits, one bit in the bitmap corresponds to one CRI, the one CRI corresponds to one resource in the Ks resources, and the value of the one bit is used to indicate whether the M resources include the resource corresponding to the one bit. The method according to any one of claims 2-3, 5-6, characterized in that, M is a positive integer less than or equal to Ks, M R is a positive integer less than M; When the value of Ks is 8, the value of M is any one of 1, 2, 3, 4, 5, 6, 7; correspondingly, the value of M R is any one of 1, 2, 3, 4, 5, 6 less than M. When the value of Ks is 4, the value of M is any one of 1, 2, 3; correspondingly, the value of M R is any one of 1, 2, which is less than M. The method of claim 10, wherein, When the value of Ks is 8, the value of M is 4; correspondingly, the value of M R is 1 or 2; When the value of Ks is 4, the value of M is 2; correspondingly, the value of M R is 1. The method of any one of claims 1-11, wherein, When the CSI report comprises the resource indications of the M resources and / or the M first-type parameters, part or all of the resource indications of the M resources are located in a first part of the CSI report, and part or all of the channel state information (CSI) parameters in the M first-type parameters are located in the first part. and / or, When the CSI report comprises the M second-type parameters and / or the priority order of the M resources, the M second-type parameters are located in a second part of the CSI report, and the priority order of the M resources is located in the second part, wherein the second part is located after the first part. The method of claim 12, wherein When part of the resource indications of the M resources are located in the first part, another part of the resource indications of the M resources are located in the second part. and / or, When part of the CSI parameters in the M first-type parameters are located in the first part, another part of the CSI parameters in the M first-type parameters are located in the second part. The method of claim 12, wherein When part of the resource indications of the M resources are located in the first part, another part of the resource indications of the M resources are located before the second part and after the first part. and / or, When part of the CSI parameters in the M first-type parameters are located in the first part, another part of the CSI parameters in the M first-type parameters are located before the second part and after the first part. The method of any one of claims 1-14, wherein The CSI report indicates M second-type parameters, comprising: the CSI report comprises one or more precoding matrix indicator (PMI) parameters; wherein the M second-type parameters comprise the one or more PMI parameters, each PMI parameter in the one or more PMI parameters comprises one or more values, and each value in the one or more values corresponds to one CRI, the one CRI being a CRI corresponding to one resource in the M resources. When one PMI parameter in the one or more PMI parameters comprises multiple values, the M second-type parameters are arranged in the priority order of the M resources, comprising: The multiple values of the one PMI parameter are arranged in the priority order of part or all of the M resources, and the CRIs corresponding to the multiple values are the CRIs corresponding to the part or all of the M resources. The method of claim 15, wherein The CSI report further comprises the priority order of part or all of the M resources; wherein, The priority order of the part or all of the M resources is located before the one or more PMI parameters; Or, the priority order of the part or all of the M resources comprises priority indications corresponding to the part or all of the M resources respectively, wherein the priority indication of a first resource is located before the value of a PMI parameter corresponding to the CRI of the first resource, and the value of the PMI parameter corresponding to the CRI of the first resource is located before the priority indication of a second resource, the first resource and the second resource being resources in the part or all of the M resources, and the value of the PMI parameter corresponding to the CRI of the first resource being a value corresponding to the CRI of the first resource in the multiple values of each PMI parameter. The method of claim 15, wherein The PMI parameter comprises one or more of: a group 0 corresponding to the PMI, a group 1 corresponding to the PMI, or a group 2 corresponding to the PMI, and the group 1 corresponding to the PMI is related to the number of selected spatial bases; Wherein, the value of the PMI parameter corresponding to the first resource comprises one or more of: a value corresponding to a first CRI in one or more values of the group 0 corresponding to the PMI, a value corresponding to the first CRI in one or more values of the group 1 corresponding to the PMI, or a value corresponding to the first CRI in one or more values of the group 2 corresponding to the PMI, the first CRI being the CRI corresponding to the first resource; The value corresponding to the first CRI in one or more values of the group 0 corresponding to the PMI is located before the value corresponding to the first CRI in one or more values of the group 1 corresponding to the PMI; and the value corresponding to the first CRI in one or more values of the group 1 corresponding to the PMI is located before the value corresponding to the first CRI in one or more values of the group 2 corresponding to the PMI. The method according to any one of claims 1 to 17, characterized in that The M first-type parameters comprise one or more CSI parameters, each of the one or more CSI parameters comprising M values, each of the M values corresponding to a CRI corresponding to the M resources respectively; The CSI report indicates the M first-type parameters, comprising: the CSI report comprises one or more CSI parameters; wherein, the M first-type parameters comprise one or more CSI parameters, each of the one or more CSI parameters comprising M values, each of the M values corresponding to a CRI corresponding to one of the M resources; The M first-type parameters are arranged in the resource indication order of the M resources, comprising: The M values included in each parameter are arranged according to the resource indication order of the M resources. The method of claim 18, wherein The CSI parameters include one or more of a rank indication (RI), a wideband channel quality indication (CQI) in a first transport block (TB), a subband differential CQI for the first TB, a number of selected spatial bases, or an indicator of a sum of non-zero coefficients (K) for all layers NZ . The method according to claim 18 or 19, characterized in that The CSI report further includes resource indications of the M resources; wherein, The resource indications of the M resources are located before the one or more CSI parameters; or, The resource indications of the M resources include CRIs corresponding to the M resources respectively, wherein a CRI of a third resource is located before a value of a CSI parameter corresponding to the CRI of the third resource, and the value of the CSI parameter corresponding to the CRI of the third resource is located before a CRI of a fourth resource, the M resources include the third resource and the fourth resource, and the value of the CSI parameter corresponding to the CRI of the third resource is a value corresponding to the CRI of the third resource among the multiple values in each CSI parameter. The method of claim 20, wherein When the one or more CSI parameters contain the number of selected spatial domain bases, The CSI report includes M values of the number of selected spatial domain bases; or, The CSI report includes a second group of index values, which are associated with the M values of the number of selected spatial domain bases; Or, The CSI report includes a first value, and the M values of the number of selected spatial domain bases are all the first value. The method of claim 21, wherein When the CSI report includes the second group of index values or the first number value, and the CRI corresponding to the second resource is located before the value of the CSI parameter corresponding to the second resource, the CSI parameter corresponding to one of the M resources includes one or more of the second group of index values or the first number value, the value corresponding to the CRI of the one of the M values of the RI, the value corresponding to the CRI of the one of the M values of the CQI in the first TB, the value corresponding to the CRI of the one of the M values of the subband differential CQI of the first TB, or the value corresponding to the CRI of the one of the M values of K NZ ​ The value of the CSI parameter corresponding to the CRI of any one of the M resources other than the one resource includes one or more of a value of the RI corresponding to the CRI of the any one of the M resources, a value of the CQI in the first TB corresponding to the CRI of the any one of the M resources, a value of the subband differential CQI of the first TB corresponding to the CRI of the any one of the M resources, or a value of the K NZ of the M resources corresponding to the CRI of the any one of the M resources. The method of claim 21, wherein When the CSI report includes the second group of index values or the first value, and a CRI corresponding to the second resource is located before a value of a CSI parameter corresponding to the second resource, The second group of index values is located after the values of the CSI parameters corresponding to the CRIs of the M resources; or, The first value is located after the values of the CSI parameters corresponding to the CRIs of the M resources. The method according to any one of claims 18-23, characterized in that When the one or more CSI parameters include K NZ when the one or more CSI parameters include K The CSI report includes a third set of index values associated with the K NZ M values of M. Or, The CSI report includes a second value, which is a sum of M values of the K NZ values. The method of claim 24, wherein When the CSI report includes the third group of index values or the second value, and a CRI corresponding to the second resource is located before a value of a CSI parameter corresponding to the second resource, the CSI parameter corresponding to one of the M resources includes one or more of the third group of index values or the second value, a value of the RI corresponding to a CRI of the one resource, a value of the CQI in the first TB corresponding to the CRI of the one resource, a value of the subband differential CQI of the first TB corresponding to the CRI of the one resource, or a value of the number of selected spatial domain bases corresponding to the CRI of the one resource. The values of the CSI parameters corresponding to the CRIs of any one of the M resources other than the one resource include one or more of the value of the RI corresponding to the CRI of the any one resource, the value of the CQI in the first TB corresponding to the CRI of the any one resource, the value of the subband differential CQI of the first TB corresponding to the CRI of the any one resource, or the value of the number of selected spatial domain bases corresponding to the CRI of the any one resource. The method of claim 24, wherein when the CSI report comprises the third set of index values or the second numerical value, and the CRI corresponding to the second resource is located before the value of the CSI parameter corresponding to the second resource, the third set of index values is located after the value of the CSI parameter corresponding to the M resources; or the second numerical value is located after the value of the CSI parameter corresponding to the M resources. The method according to any one of claims 1 to 26, characterized in that The codebook type includes Type I and Type II; in the Type I, Ks is a positive integer greater than 1 and less than or equal to 8, and M is a positive integer greater than or equal to 1 and less than or equal to 4; in the Type II, Ks is a positive integer greater than 1 and less than or equal to 4, and M is equal to any one of 1 or 2. The method according to any one of claims 1 to 27, characterized in that The codebook type includes Type I and Type II; In the type I, M R has a value of 1 or 2, the M resources include M R resources. In said type II, M R has the value 1 or 2. A communication device, characterized by The communication device comprises a transceiver module and a processing module, the transceiver module is configured to perform the receiving or transmitting in the method of any one of claims 1-3, 7-28, or perform the receiving or transmitting in the method of any one of claims 4-28; and the processing module is configured to perform the processing in the method of any one of claims 1-3, 7-28, or perform the processing in the method of any one of claims 4-28. A communication device, characterized by The communication device comprises a processor; the processor is configured to run a computer program or instructions, so that the communication device performs the method of any one of claims 1-3, 7-28, or performs the method of any one of claims 4-28. A computer-readable storage medium, characterized by A computer readable storage medium stores computer instructions or programs, when the computer instructions or programs are run on a computer, so that the method of any one of claims 1-3, 7-28 is performed, so that the method of any one of claims 4-28 is performed. A computer program product, characterized in that The computer program product comprises computer instructions; when part or all of the computer instructions are run on a computer, so that the method of any one of claims 1-3, 7-28 is performed, so that the method of any one of claims 4-28 is performed.

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