WO2022083532A1

WO2022083532A1 - Csi computation method, user terminal and computer-readable storage medium

Info

Publication number: WO2022083532A1
Application number: PCT/CN2021/124347
Authority: WO
Inventors: 王化磊
Original assignee: 北京紫光展锐通信技术有限公司
Priority date: 2020-10-23
Filing date: 2021-10-18
Publication date: 2022-04-28
Also published as: CN114501519A

Abstract

The embodiments of the present application provide a CSI computation method, a user terminal and a computer-readable storage medium. The method comprises: receiving network configuration information issued by a network side; determining a CSI computation behavior according to the network configuration information; and when the CSI computation behavior is to perform CSI computation on the basis of non-coherent joint transmission, computing CSI corresponding to each transmission and reception point (TRP) in a plurality of TRPs, wherein the plurality of TRPs correspond to a codeword. By means of the solution, CSI computation can be performed on a non-coherent joint transmission scheme.

Description

CSI calculation method, user terminal and computer-readable storage medium

This application claims the priority of the invention application with the application number "202011148729.5" and the invention title "CSI calculation method, user terminal and computer-readable storage medium" filed on October 23, 2020. The content of the above-mentioned earlier application is approved by Reference is incorporated in this application.

technical field

The present application relates to the field of wireless communication, and in particular, to a CSI calculation method, a user terminal, and a computer-readable storage medium.

Background technique

The Channel State Information (CSI) protocol framework has been clarified in New Radio (NR) R15, that is, the user terminal learns the report content to be measured based on the CSI-ReportConfig (CSI-ReportConfig) information configured on the network side. Thereby, it is known which transmission scheme the CSI calculation is based on, and the CSI calculation is performed based on the CSI resource configuration (CSI-ResourceConfig) associated with the CSI report configuration information.

In the current NR CSI protocol framework, the NR protocol only supports closed-loop transmission schemes and open-loop/semi-open-loop transmission schemes. For the non-coherent joint transmission scheme, the existing NR protocol is not involved.

SUMMARY OF THE INVENTION

The embodiments of the present application solve how to perform CSI calculation for the non-coherent joint transmission scheme.

A first aspect of the embodiments of the present application provides a CSI calculation method, the method comprising:

Receive the network configuration information delivered by the network side;

determining the CSI calculation behavior according to the network configuration information;

When the CSI calculation behavior is to perform CSI calculation based on non-coherent joint transmission, the CSI corresponding to each TRP in the multiple transmission and reception point TRPs is calculated, and the multiple TRPs correspond to one codeword.

With reference to the first aspect, in a possible implementation manner, the determining the CSI calculation behavior according to the network configuration information includes:

According to the network configuration information, obtain CSI report configuration information; According to the CSI report configuration information, determine the CSI calculation behavior;

Or, obtain CSI resource configuration information for channel measurement according to the network configuration information; determine a CSI calculation behavior according to the CSI resource configuration information for channel measurement;

Or, according to the network configuration information, obtain indication information for indicating the CSI calculation behavior; and determine the CSI calculation behavior according to the indication information for indicating the CSI calculation behavior.

With reference to the first aspect, in a possible implementation manner, the acquiring CSI report configuration information according to the network configuration information includes any of the following:

obtaining the CSI report configuration information from the network configuration information;

Or, obtain the information indicated by the downlink control information from the network configuration information, where the information indicated by the downlink control information includes the CSI aperiodic trigger state selected by the CSI request trigger; Report configuration information, and determine to report configuration information for the CSI.

With reference to the first aspect, in a possible implementation manner, the determining the CSI calculation behavior according to the CSI reporting configuration information includes:

obtaining rank information from the CSI report configuration information, where the rank information is used to indicate the number of ranks included in the CSI report, or the rank information is used to indicate the maximum number of ranks included in the CSI report;

When the rank information indicates that the number of ranks included in the CSI report is 2, or indicates that the maximum number of ranks included in the CSI report is 2, it is determined that the CSI calculation behavior is to perform CSI calculation based on non-coherent joint transmission.

With reference to the first aspect, in a possible implementation manner, the calculating CSI corresponding to each TRP in the multiple sending and receiving point TRPs includes:

When the resource set includes multiple NZP CSI-RS resources, the multiple NZP CSI-RS resources correspond to the multiple TRPs;

Taking the measurement and calculation results of the NZP CSI-RS resources corresponding to other TRPs as the interference information corresponding to the first TRP, and calculating the CSI corresponding to the first TRP according to the interference information corresponding to the first TRP, until the calculated Describe the CSI corresponding to each TRP;

When the resource set includes one NZP CSI-RS resource, and the NZP CSI-RS resource includes port groups with different QCL information, the measurement and calculation results of the port groups corresponding to other TRPs are used as the interference corresponding to the first TRP information, and calculate the CSI corresponding to the first TRP according to the interference information corresponding to the first TRP, until the CSI corresponding to each TRP is calculated;

The first TRP is any one of the multiple TRPs, and the other TRPs are TRPs other than the first TRP among the multiple TRPs.

With reference to the first aspect, in a possible implementation manner, the obtaining CSI resource configuration information for channel measurement according to the network configuration information includes:

obtaining the CSI resource configuration information for channel measurement from the network configuration information;

Or, obtain the information indicated by the downlink control information from the network configuration information, where the information indicated by the downlink control information includes the CSI aperiodic trigger state selected by the CSI request trigger; associate the selected CSI aperiodic trigger state with The CSI resource configuration information used for channel measurement is determined as the CSI resource configuration information used for channel measurement.

With reference to the first aspect, in a possible implementation manner, determining the CSI calculation behavior according to the CSI resource configuration information used for channel measurement includes:

When a resource set in the CSI resource configuration information for channel measurement includes at least two NZP CSI-RS resources, it is determined that the CSI calculation behavior is to perform CSI calculation based on non-coherent joint transmission.

Taking the measurement and calculation results of the NZP CSI-RS resources corresponding to other TRPs as the interference information corresponding to the first TRP, and calculating the CSI corresponding to the first TRP according to the interference information corresponding to the first TRP, until the calculated The CSI corresponding to each TRP, wherein the first TRP is any one of the multiple TRPs, and the other TRPs are TRPs other than the first TRP among the multiple TRPs.

When there are at least two port groups in one NZP CSI-RS resource in the CSI resource configuration information for channel measurement, and the QCL information corresponding to different port groups is different, it is determined that the CSI calculation behavior is to perform CSI based on non-coherent joint transmission calculate.

Taking the measurement and calculation results of the port groups corresponding to other TRPs as the interference information corresponding to the first TRP, and calculating the CSI corresponding to the first TRP according to the interference information corresponding to the first TRP, until each of the CSI corresponding to a TRP, wherein the first TRP is any one of the multiple TRPs, and the other TRPs are TRPs other than the first TRP among the multiple TRPs.

With reference to the first aspect, in a possible implementation manner, the obtaining, according to the network configuration information, the indication information for indicating the CSI calculation behavior includes:

From the network configuration information, obtain the information indicated by the downlink control information;

According to the information indicated by the downlink control information, the indication information included in the CSI aperiodic trigger state and used to indicate the CSI calculation behavior is acquired.

With reference to the first aspect, in a possible implementation manner, the indication information for indicating the CSI calculation behavior is rank joint information, and the rank joint information is that the reported different values satisfy candidate RI pairs.

Taking the measurement and calculation results corresponding to other TRPs in the same CSI aperiodic trigger state as the interference information corresponding to the first TRP, and calculating the CSI corresponding to the first TRP according to the interference information corresponding to the first TRP, Until the CSI corresponding to each TRP is calculated, wherein the first TRP is any one of the multiple TRPs, and the other TRPs are TRPs other than the first TRP among the multiple TRPs , the measurement calculation result corresponding to the other TRP is: in the configuration information related to the other TRP, the measurement calculation result of the NZP CSI-RS resource in the resource set used for channel measurement.

With reference to the first aspect, in a possible implementation manner, when the network configuration information includes information indicated by a plurality of downlink control information, the values corresponding to the CSI requests in each downlink control information are equal.

With reference to the first aspect, in a possible implementation manner, after the calculating the CSI corresponding to each TRP in the multiple sending and receiving point TRPs, the method further includes:

The CSI corresponding to each TRP is reported to the network side.

With reference to the first aspect, in a possible implementation manner, the reporting of the CSI corresponding to each TRP to the network side includes:

The CSI corresponding to each TRP and the validity indication information corresponding to each CSI are reported to the network side.

With reference to the first aspect, in a possible implementation manner, the length of the validity indication information is 1 bit or 2 bits.

When it is detected that the validity indication information corresponding to the CSI corresponding to the second TRP in the plurality of TRPs is invalid, obtain the interference information corresponding to the first TRP, and calculate the corresponding information of the first TRP according to the interference information until the CSI corresponding to each TRP is calculated, wherein the interference information includes: measurement results corresponding to TRPs other than the second TRP among the multiple TRPs, wherein the first TRP is any one of the multiple TRPs.

With reference to the first aspect, in a possible implementation manner, the CSI corresponding to each TRP is reported to the network side in any of the following manners:

reporting a CSI report to the network side, and the CSI report corresponding to each TRP is carried in the CSI report;

Multiple CSI reports are reported to the network side, and each CSI report carries CSI corresponding to one TRP.

In combination with the first aspect, in a possible implementation, when each CSI report carries CSI corresponding to one TRP, the priority of the CSI report corresponding to each TRP is the same, and any one of the CSI reports corresponding to each TRP has the same priority. The priority of the even-numbered subband CSI is higher than the priority of any odd-numbered subband CSI in the CSI reports corresponding to all TRPs.

When the CSI corresponding to the first TRP is the same as the CSI corresponding to the second TRP among the multiple TRPs, and the CSI corresponding to the first TRP includes at least one of CRI, RI, PMI, and CQI, obtain the first TRP The interference information corresponding to the TRP, the CSI corresponding to the first TRP is calculated according to the interference information until the CSI corresponding to each TRP is calculated, and the interference information includes dividing the second TRP among the multiple TRPs A measurement and calculation result of a TRP other than , wherein the first TRP is any one of the multiple TRPs.

When it is detected that the RI corresponding to the CSI corresponding to the second TRP in the multiple TRPs is greater than 4, the interference information corresponding to the first TRP is obtained, and the CSI corresponding to the first TRP is calculated according to the interference information, until the calculated The CSI corresponding to each TRP, and the interference information includes measurement and calculation results of TRPs in the multiple TRPs except the second TRP, where the first TRP is any one of the multiple TRPs. one.

A second aspect of the embodiments of the present application provides a user terminal, including:

a receiving unit, configured to receive the network configuration information delivered by the network side;

a determining unit, configured to determine the CSI calculation behavior according to the network configuration information;

A calculation unit, configured to calculate CSI corresponding to each TRP in the multiple transmission and reception point TRPs when the CSI calculation behavior is based on non-coherent joint transmission for CSI calculation, and the multiple TRPs correspond to one codeword.

With reference to the second aspect, in a possible implementation manner, the determining unit is configured to determine the CSI calculation behavior according to the network configuration information in any of the following manners: obtain CSI report configuration information according to the network configuration information ; According to the CSI report configuration information, determine the CSI calculation behavior; Or, according to the network configuration information, obtain the CSI resource configuration information for channel measurement; According to the CSI resource configuration information for channel measurement, determine the CSI calculation or, according to the network configuration information, obtain indication information used to indicate the CSI calculation behavior; and determine the CSI calculation behavior according to the indication information used to indicate the CSI calculation behavior.

With reference to the second aspect, in a possible implementation manner, the determining unit is configured to obtain the CSI report configuration information according to the network configuration information in any of the following manners: from the network configuration information, obtain the CSI report configuration information; or, obtain the information indicated by the downlink control information from the network configuration information, where the information indicated by the downlink control information includes the CSI aperiodic trigger state selected by the CSI request trigger; The CSI report configuration information associated with the state is determined to be the CSI report configuration information.

With reference to the second aspect, in a possible implementation manner, the determining unit is configured to obtain rank information from the CSI report configuration information, where the rank information is used to indicate the number of ranks included in the CSI report, or the The rank information is used to indicate the maximum number of ranks included in the CSI report; when the rank information indicates that the number of ranks included in the CSI report is 2, or indicates that the maximum number of ranks included in the CSI report is 2, it is determined that the CSI calculation behavior is based on non-coherent joint The transmission performs CSI calculations.

With reference to the second aspect, in a possible implementation manner, the computing unit is configured to, when the resource set includes multiple NZP CSI-RS resources, the multiple NZP CSI-RS resources correspond to the multiple TRPs; Taking the measurement and calculation results of the NZP CSI-RS resources corresponding to other TRPs as the interference information corresponding to the first TRP, and calculating the CSI corresponding to the first TRP according to the interference information corresponding to the first TRP, until the calculated Describe the CSI corresponding to each TRP; when the resource set includes an NZP CSI-RS resource, and the NZP CSI-RS resource includes port groups with different QCL information, the measurement and calculation results of the port groups corresponding to other TRPs are used as interference information corresponding to the first TRP, and calculate the CSI corresponding to the first TRP according to the interference information corresponding to the first TRP, until the CSI corresponding to each TRP is calculated; wherein, the first TRP is any one of the multiple TRPs, and the other TRPs are TRPs other than the first TRP among the multiple TRPs.

With reference to the second aspect, in a possible implementation manner, the determining unit is configured to acquire, according to the network configuration information, the CSI resource configuration information used for channel measurement in any of the following manners: from the network configuration information , obtain the CSI resource configuration information used for channel measurement; or, obtain the information indicated by the downlink control information from the network configuration information, where the information indicated by the downlink control information includes the CSI non-signal selected by the CSI request trigger Periodic trigger state; determine the CSI resource configuration information for channel measurement associated with the selected CSI aperiodic trigger state as the CSI resource configuration information for channel measurement.

With reference to the second aspect, in a possible implementation manner, the determining unit is configured to determine the CSI when a resource set in the CSI resource configuration information for channel measurement includes at least two NZP CSI-RS resources The calculation behavior is based on non-coherent joint transmission for CSI calculation.

With reference to the second aspect, in a possible implementation manner, the calculation unit is configured to use the measurement and calculation results of the NZP CSI-RS resources corresponding to other TRPs as the interference information corresponding to the first TRP, and use the calculation results according to the first TRP. The interference information corresponding to a TRP calculates the CSI corresponding to the first TRP until the CSI corresponding to each TRP is calculated, wherein the first TRP is any one of the multiple TRPs, and the other TRPs is a TRP other than the first TRP among the plurality of TRPs.

With reference to the second aspect, in a possible implementation, the determining unit is configured to, when there are at least two port groups in one NZP CSI-RS resource in the CSI resource configuration information for channel measurement, and different ports When the QCL information corresponding to the groups is different, it is determined that the CSI calculation behavior is to perform CSI calculation based on non-coherent joint transmission.

With reference to the second aspect, in a possible implementation manner, the calculation unit is used to use the measurement and calculation results of the port groups corresponding to other TRPs as the interference information corresponding to the first TRP, and according to the corresponding interference information of the first TRP Calculate the CSI corresponding to the first TRP until the CSI corresponding to each TRP is calculated, wherein the first TRP is any one of the multiple TRPs, and the other TRPs are the TRPs other than the first TRP among the plurality of TRPs.

With reference to the second aspect, in a possible implementation manner, the determining unit is configured to acquire the information indicated by the downlink control information from the network configuration information; acquire the CSI according to the information indicated by the downlink control information The indication information included in the aperiodic trigger state and used to indicate the CSI calculation behavior.

With reference to the second aspect, in a possible implementation manner, the indication information for indicating the CSI calculation behavior is rank joint information, and the rank joint information is that the reported different values satisfy candidate RI pairs.

With reference to the second aspect, in a possible implementation manner, the calculation unit is configured to use the measurement calculation results corresponding to other TRPs in the same CSI aperiodic trigger state as the interference information corresponding to the first TRP, and Calculate the CSI corresponding to the first TRP according to the interference information corresponding to the first TRP until the CSI corresponding to each TRP is calculated, wherein the first TRP is any one of the multiple TRPs, The other TRPs are TRPs other than the first TRP among the multiple TRPs, and the measurement calculation results corresponding to the other TRPs are: in the configuration information related to the other TRPs, the NZP in the resource set used for channel measurement Measurement and calculation results of CSI-RS resources.

In combination with the second aspect, in a possible implementation, when the network configuration information includes information indicated by multiple downlink control information, the values corresponding to the CSI requests in each downlink control information are equal.

With reference to the second aspect, in a possible implementation manner, the method further includes: a reporting unit, configured to report the CSI corresponding to each TRP to the network side.

With reference to the second aspect, in a possible implementation manner, the reporting unit is configured to report the CSI corresponding to each TRP and the validity indication information corresponding to each CSI to the network side.

With reference to the second aspect, in a possible implementation manner, the length of the validity indication information is 1 bit or 2 bits.

With reference to the second aspect, in a possible implementation manner, the reporting unit is configured to report the CSI corresponding to each TRP to the network side in any of the following manners:

In combination with the second aspect, in a possible implementation, when each CSI report carries CSI corresponding to one TRP, the CSI reports corresponding to each TRP have the same priority, and any one of the CSI reports corresponding to each TRP has the same priority. The priority of the even-numbered subband CSI is higher than the priority of any odd-numbered subband CSI in the CSI reports corresponding to all TRPs.

Embodiments of the present application further provide a computer-readable storage medium, on which computer instructions are stored, and when the computer instructions are run, the steps of any of the foregoing CSI calculation methods are executed.

An embodiment of the present application further provides another user terminal, including a memory and a processor, where the memory stores computer instructions that can be run on the processor, and the processor executes any of the above when running the computer instructions. A kind of steps of the CSI calculation method.

Compared with the prior art, the technical solutions of the embodiments of the present application have the following beneficial effects:

When it is determined according to the network configuration information delivered by the network side that the CSI calculation behavior is based on non-coherent joint transmission for CSI calculation, when multiple TRPs correspond to one TRP, the CSI corresponding to multiple TRPs can be calculated, so that incoherent joint transmission can be realized The relevant CSI calculation of .

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

FIG. 1 is a flowchart of a CSI calculation method in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a user terminal in an embodiment of the present application.

Detailed ways

In the current NR CSI protocol framework, the NR protocol only supports closed-loop transmission schemes and open-loop/semi-open-loop transmission schemes. Corresponding to the non-coherent joint transmission scheme, the existing NR protocol is not involved.

In the embodiment of the present application, when it is determined according to the network configuration information delivered by the network side that the CSI calculation behavior is based on non-coherent joint transmission for CSI calculation, when multiple TRPs correspond to one codeword, when calculating CSI corresponding to multiple TRPs , so that the relevant CSI calculation of non-coherent joint transmission can be realized.

In order to make the above objects, features and beneficial effects of the present application more clearly understood, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

An embodiment of the present application provides a CSI calculation method. Referring to FIG. 1 , the following describes in detail through specific steps.

Step S101, receiving the network configuration information delivered by the network side.

In a specific implementation, when the network side needs to acquire the CSI, the network side can deliver network configuration information to the user terminal. The network configuration information delivered by the network side to the user terminal may be used to instruct the user terminal to report CSI.

In this embodiment of the present application, the network configuration information delivered by the network side to the user terminal may include CSI report configuration information, may also include CSI resource configuration information used for channel measurement, and may also include information indicated by downlink control information.

It can be understood that the network configuration information delivered by the network side may also be other types of information, as long as the user terminal can be instructed to report the CSI, and is not limited to the above-mentioned types of information.

Step S102: Determine the CSI calculation behavior according to the network configuration information.

In a specific implementation, the network side may set calculation behavior indication information for indicating the CSI calculation behavior in the CSI report configuration information. The calculation behavior indication information set by the network side may be used to indicate whether the CSI calculation behavior is based on non-coherent joint transmission for CSI calculation, or based on closed-loop transmission for CSI calculation, or based on open-loop/half-open-loop transmission for CSI calculation, or based on single TRP. transmission. Wherein, the non-coherent joint transmission may be transmitted through more than one TRP, or may also be transmitted through more than one TRP and not a single frequency network (SFN).

After receiving the network configuration information configured on the network side, the user terminal can learn the calculation behavior indication information configured on the network side, and then can determine the CSI calculation behavior.

For example, the network side adds 1-bit information to the CSI report configuration information, and the added 1-bit information is used to represent the calculation behavior indication information. When the value corresponding to the calculation behavior indication information is 1, the CSI calculation behavior performed by the user terminal is instructed to perform CSI calculation based on non-coherent joint transmission; when the value corresponding to the calculation behavior indication information is 0, the CSI calculation behavior performed by the user terminal is instructed CSI calculation is performed based on other transmission schemes.

In a specific implementation, the network side may also indicate the CSI calculation behavior to the user terminal in the network configuration information. In practical applications, the CSI calculation behavior may be based on single TRP transmission, or may be CSI calculation based on non-coherent joint transmission.

After receiving the network configuration information delivered by the network side, the user terminal can determine the CSI calculation behavior.

In a specific implementation, the user terminal may obtain the CSI report configuration information according to the network configuration information; and determine the CSI calculation behavior according to the obtained CSI report configuration information. The CSI report configuration information may be obtained directly from the network configuration information, or may be obtained indirectly from the network configuration information.

In this embodiment of the present application, the network configuration information delivered by the network side may include CSI report configuration information. Therefore, the CSI report configuration information may be directly obtained from the network configuration information delivered by the network side.

In this embodiment of the present application, the network configuration information delivered by the network side may further include information indicated by the downlink control information, and the information indicated by the downlink control information includes a CSI aperiodic trigger state (CSI request) triggering selection -AperiodicTriggerState), therefore, the CSI report configuration information associated with the selected CSI aperiodic trigger state can be acquired.

In a specific implementation, the CSI report configuration information may carry rank (RI) information, and the rank information may be used to represent the number of RIs included in the CSI report, or the maximum number of RIs included in the CSI report. generated from the configuration information.

When in the CSI report configuration information, the rank information indicates that the number of RIs included in the CSI report is 2, or indicates that the maximum RI data included in the CSI report is 2, then the user terminal can determine that the CSI calculation behavior is based on non-coherent joint transmission for CSI calculate.

For example, the CSI reporting configuration information includes rank information. The rank information is nrofRIsPerReport, which is used to indicate the number of RIs included in the CSI report. When nrofRIsPerReport=2, the user terminal determines that the CSI calculation behavior is to perform CSI calculation based on non-coherent joint transmission.

For another example, the rank information is maxNrofRIsPerReport, which is used to indicate the maximum RI data included in the CSI report. When maxNrofRIsPerReport=2, the user terminal determines that the CSI calculation behavior is to perform CSI calculation based on non-coherent joint transmission.

In a specific implementation, the user terminal may obtain the CSI resource configuration information for channel measurement according to the network configuration information; and determine the CSI calculation behavior according to the CSI resource configuration information for channel measurement. The CSI resource configuration information used for channel measurement may be obtained directly from the network configuration information, or may be obtained indirectly according to the network configuration information.

In this embodiment of the present application, the network configuration information delivered by the network side may include CSI resource configuration information used for channel measurement. Therefore, the CSI resource configuration information for channel measurement can be directly obtained from the network configuration information delivered by the network side.

In this embodiment of the present application, the network configuration information delivered by the network side may also include information indicated by the downlink control information, and the information indicated by the downlink control information includes the CSI aperiodic trigger state selected by the CSI request trigger. CSI resource configuration information for channel measurement associated with the selected CSI aperiodic trigger state.

In a specific implementation, the network side may indicate that a resource set includes at least two NZP CSI-RS resources in the CSI resource configuration information used for channel measurement. After receiving the network configuration information, the user terminal can learn that the CSI resource configuration information used for channel measurement indicates that a resource set includes at least two NZP CSI-RS resources. At this time, the user terminal can learn that the CSI calculation behavior is to perform CSI calculation based on non-coherent joint transmission.

The network side may also indicate that one NZP CSI-RS resource includes multiple port groups in the CSI resource configuration information used for channel measurement, and the QCL (Quasi co-location) information of different port groups is different. After receiving the network configuration information, the user terminal can learn that the CSI resource configuration information used for channel measurement indicates that one NZP CSI-RS resource includes at least two port groups, and the QCL information of different port groups is different. At this time, the user terminal can learn that the CSI calculation behavior is to perform CSI calculation based on non-coherent joint transmission.

In this embodiment of the present application, the network configuration information delivered by the network side may be based on the information indicated by the downlink control information, and the information indicated by the downlink control information may indicate that the CSI calculation behavior of the user terminal is to perform CSI calculation based on non-coherent joint transmission.

In an embodiment of the present application, the information indicated by the downlink control information is specifically a CSI aperiodic trigger state (CSI-AperiodicTriggerState) selected by a CSI request (CSI request).

The CSI aperiodic trigger status may include 1-bit information, which is used to indicate whether the user terminal CSI calculation behavior is based on non-coherent joint transmission or other transmission schemes. The CSI aperiodic trigger state may include rank joint information, and the rank joint information indicates whether the CSI calculation behavior of the user terminal is based on non-coherent joint transmission or other transmission schemes. The rank joint information may mean that the two sets of RI values reported by the user terminal must satisfy the candidate RI pair.

Step S103, when the CSI calculation behavior is to perform CSI calculation based on non-coherent joint transmission, calculate the CSI corresponding to each TRP in the multiple transmitting and receiving point TRPs, and the multiple TRPs correspond to one codeword.

In non-coherent transmission, multi-TRP (transmission and reception point) transmission can be supported, TRP can be network equipment, and network equipment can be access network equipment, such as base station, gNB, eNB, etc. In this embodiment of the present application, a codeword (codeword) is an independent transmission that is sent over a transmission time interval (Transmission Time Interval, TTI) and includes CRC bits and undergoes encoding (Encoding) and rate matching (Ratematching). yuan. It is stipulated in LTE that for each user terminal, one TTI can transmit at most two codewords. A codeword can correspond to two TRPs, or can correspond to one TRP.

When calculating the CSI corresponding to the TRP, the CSI can be determined by the following methods:

obtaining the interference information corresponding to the first TRP;

Calculate the CSI corresponding to the first TRP according to the interference information until the CSI corresponding to each TRP is calculated, and the first TRP is any one of multiple TRPs.

The interference information may be measurement and calculation results corresponding to TRPs other than the first TRP among the multiple TRPs, measurement and calculation results of a port group, and the like.

A possible method for calculating the CSI corresponding to the first TRP according to the interference information includes:

Obtain the channel measurement result of the first TRP according to the NZP CSI-RS resources measured by the channel of the first TRP;

Obtain the interference information of the first TRP based on the measurement calculation result corresponding to the TRP other than the first TRP among the multiple TRPs, or the measurement calculation result of the port group, etc.;

The CSI corresponding to the first TRP is acquired based on the channel measurement result and the interference information of the first TRP.

A possible example is as follows:

Obtain the channel measurement result H of the first TRP according to the NZP CSI-RS resources measured by the channel of the first TRP;

Obtain the interference information I of the first TRP based on the measurement and calculation results corresponding to TRPs other than the first TRP among the multiple TRPs, or the measurement and calculation results of the port group, etc.,

Then, by calculating the signal-to-noise ratio corresponding to the first TRP, the signal-to-noise ratio is HHH/(I+N), where N is the noise power. The CQI corresponding to the signal-to-interference ratio. The CQI is the CSI.

It should be noted that the codewords described in the embodiments of the present application and the codewords in the codebook involved in practical applications are not the same concept.

In a specific implementation, the user terminal may determine, based on the CSI report configuration information configured on the network side, that the CSI calculation behavior is to perform CSI calculation based on non-coherent joint transmission. The resource set for channel measurement may include multiple NZP CSI-RS resources for channel measurement, or may include only one NZP CSI-RS resource for channel measurement. When the resource set includes multiple NZP CSI-RS resources for channel measurement, different TRPs can correspond to different NZP CSI-RS resources; when the resource set includes only one NZP CSI-RS resource for channel measurement, one The NZP CSI-RS resource can include multiple port groups, and different TRPs can correspond to different port groups.

In this embodiment of the present application, other TRPs may be understood as TRPs other than the first TRP among the multiple TRPs, and the first TRP is any one of the multiple TRPs.

Therefore, when calculating the CSI corresponding to the first TRP, the user terminal can use the measurement and calculation results of the NZP CSI-RS resources corresponding to other TRPs as the interference information between TRPs, or use the NZP CSI-RS resources corresponding to other TRPs in the same NZP CSI-RS resource. The measurement and calculation result of the port group is used as the interference information between TRPs.

For example, the resources used for channel measurement corresponding to TRP1 and the resources used for channel measurement corresponding to TRP2 belong to the same resource set. When calculating the CSI corresponding to the TRP1, the measurement and calculation result of the resource corresponding to the TRP2 may be used as the interference information between the TRPs corresponding to the TRP1.

In a specific implementation, the user terminal may determine, based on the CSI resource configuration information configured by the network side for channel measurement, that the CSI calculation behavior is to perform CSI calculation based on non-coherent joint transmission.

If the CSI resource configuration information indicates that a resource set includes at least two NZP CSI-RS resources, when calculating the CSI corresponding to the first TRP, the user terminal can use the measurement and calculation results of the NZP CSI-RS resources corresponding to other TRPs as the TRP If the CSI resource configuration information indicates that one NZP CSI-RS resource includes multiple port groups, and the QCL information of different port groups is different, then the user terminal can calculate the CSI corresponding to the first TRP, other TRP The measurement and calculation result of the port group of the corresponding NZP CSI-RS resource is used as the interference information between TRPs corresponding to the first TRP.

In a specific implementation, the user terminal may determine that the CSI calculation behavior is to perform CSI calculation based on non-coherent joint transmission based on the information indicated by the downlink control information configured on the network side. When calculating the CSI corresponding to the first TRP, the user terminal uses the measurement and calculation results of other TRPs in the aperiodic trigger state of the same CSI as the interference information between the TRPs corresponding to the first TRP. The measurement calculation results corresponding to the other TRPs include: in the configuration information of the other TRPs, the measurement calculation results are calculated according to the NZP CSI-RS resources in the resource set used for channel measurement.

In this embodiment of the present application, when the measurement and calculation results of the resources corresponding to other TRPs are used as the interference information between the TRPs corresponding to the first TRP, the measurement and calculation results of the resources corresponding to the other TRPs may be used as the interference between the TRPs corresponding to the first TRP. information.

In a specific implementation, after calculating the CSI corresponding to each TRP, the user terminal may also report the calculated CSI corresponding to each TRP to the network side.

In this embodiment of the present application, when reporting the CSI corresponding to each TRP to the network side, the user terminal may report a CSI report to the network side. In one CSI report, the CSI corresponding to all TRPs can be carried.

For example, after calculating the CSI corresponding to TRP1 and the CSI corresponding to TRP2, the user terminal carries the CSI corresponding to TRP1 and the CSI corresponding to TRP2 in one CSI report, and sends the CSI report to the network side.

In this embodiment of the present application, the user terminal may also report multiple CSI reports to the network side, and each CSI report may carry CSI corresponding to one TRP.

For example, the user terminal may report two CSI reports to the network side, wherein one CSI report carries the CSI corresponding to TRP1, and the other CSI report carries the CSI corresponding to TRP2.

In a specific implementation, when different CSI reports are used to carry CSI corresponding to different TRPs, during CSI priority processing, the priorities corresponding to different CSI reports may be equal. For the CSI report corresponding to each TRP, the priority of any even subband CSI is higher than the priority of any odd subband CSI in the CSI report corresponding to any TRP.

For example, the user terminal sends the CSI corresponding to the two TRPs to the network side. The priority of any even subband CSI in the CSI report corresponding to TRP1 is higher than the priority of any odd subband CSI in TRP1 and TRP2.

In a specific implementation, a scenario where the CSI corresponding to two TRPs is the same may occur. If the CSI report corresponding to the first TRP is the same as the CSI report corresponding to the second TRP, and any CSI report includes any one of CRI, RI, PMI, and CQI, it means that the CSI calculation of the first TRP is being performed. , the measurement calculation result corresponding to the second TRP is not used as the interference information between the TRPs of the first TRP. That is, the interference information includes measurement and calculation results of TRPs other than the second TRP among the multiple TRPs.

For example, the user terminal reports CSI reports corresponding to two TRPs, one of which includes CRI, RI, and CQI, and the CSI reports corresponding to the two TRPs are the same. At this time, it can be determined that when calculating the CSI corresponding to TRP1, The measurement calculation result corresponding to TRP2 is not regarded as the inter-TRP interference of TRP1.

In a specific implementation, when reporting the CSI report to the network side, the user terminal may also add information for indicating the validity of the CSI to the CSI report. In this embodiment of the present application, the user terminal may add 1 bit or 2 bits to the CSI report to indicate the validity of the CSI. The number of bits added in the CSI report may be equal to the number of TRPs used.

When only CSI corresponding to one TRP is carried in one CSI report, the user terminal may add 1-bit validity information to the CSI report to indicate the validity of the CSI corresponding to the current TRP.

For example, when the value of the newly added 1 bit in the CSI report is 1, it indicates that the CSI corresponding to the TRP is valid; on the contrary, when the value of the newly added 1 bit in the CSI report is 0, it indicates that the CSI corresponding to the TRP is valid. invalid.

When one CSI report carries CSI corresponding to two TRPs, the user terminal may add 2 bits to the CSI report to indicate the validity of the CSI corresponding to TRP1 and the validity of the CSI corresponding to TRP2.

For example, when the value of the newly added 2 bits in the CSI report is 01, it indicates that the CSI corresponding to TRP1 is invalid and the CSI corresponding to TRP2 is valid.

When the RI in a CSI report is greater than 4, the CSI report may be considered invalid.

For example, the user terminal reports two CSI reports, and the value of RI in the CSI report corresponding to TRP2 is greater than 4. Therefore, it can be determined that the CSI corresponding to TRP2 is meaningless. When calculating the CSI corresponding to TRP1, it is not necessary to use the measurement and calculation result corresponding to TRP2 as inter-TRP interference. Therefore, when sending the CSI corresponding to each TRP to the network side, the user terminal sends CSI validity information to the network side to indicate that the CSI corresponding to TRP2 is invalid and the corresponding CSI when TRP1 is valid.

When the CSI report is invalid, the following method can be used to calculate the CSI information corresponding to the TRP:

In practical applications, the user terminal may also not need to send CSI validity information to the network side. When the network side learns that the RI in a CSI report is greater than 4, it can know that the CSI report is invalid.

The user terminal reports the validity indication information corresponding to each CSI to the network side, so that the network side can know which TRP corresponding to the CSI is valid and which TRP corresponding CSI is invalid, so that the corresponding transmission scheme can be adjusted. Adjustments to improve communication system performance.

In a specific implementation, if the network configuration information delivered by the network side is based on the information indicated by the downlink control information, and different TRPs correspond to different downlink control information, the values of CSI requests (requests) in different downlink control information are the same.

In a specific implementation, when it is detected that the validity indication information corresponding to the CSI corresponding to the second TRP is invalid, it can be determined that the measurement corresponding to the second TRP is not calculated when the CSI corresponding to the first TRP is calculated. The calculation result is taken as the inter-TRP interference of the first TRP.

Referring to FIG. 2, an embodiment of the present application further provides a user terminal 20, including: a receiving unit 201, a determining unit 202, and a computing unit 203, wherein:

A receiving unit 201, configured to receive network configuration information delivered by the network side;

a determining unit 202, configured to determine the CSI calculation behavior according to the network configuration information;

The calculation unit 203 is configured to calculate the CSI corresponding to each TRP in the multiple transmission and reception point TRPs when the CSI calculation behavior is based on non-coherent joint transmission for CSI calculation, and the multiple TRPs correspond to one codeword.

In a possible implementation manner, the determining unit 202 is configured to determine the CSI calculation behavior according to the network configuration information in any of the following manners: obtain CSI report configuration information according to the network configuration information; CSI reporting configuration information to determine CSI calculation behavior; or, according to the network configuration information, to obtain CSI resource configuration information for channel measurement; according to the CSI resource configuration information for channel measurement, to determine CSI calculation behavior; or, According to the network configuration information, the indication information used to indicate the CSI calculation behavior is acquired; and the CSI calculation behavior is determined according to the indication information used to indicate the CSI calculation behavior.

In a possible implementation manner, the determining unit 202 is configured to obtain the CSI report configuration information according to the network configuration information in any of the following manners: obtain the CSI report configuration information from the network configuration information Or, obtain the information indicated by the downlink control information from the network configuration information, and the information indicated by the downlink control information includes the CSI aperiodic trigger state selected by the CSI request trigger; CSI report configuration information, which is determined to be the CSI report configuration information.

In a possible implementation, the determining unit 202 is configured to obtain rank information from the CSI report configuration information, where the rank information is used to indicate the number of ranks included in the CSI report, or the rank information is used to Indicates the maximum number of ranks included in the CSI report; when the rank information indicates that the number of ranks included in the CSI report is 2, or indicates that the maximum number of ranks included in the CSI report is 2, it is determined that the CSI calculation behavior is CSI calculation based on non-coherent joint transmission .

In a possible implementation manner, the calculating unit 203 is configured to, when the resource set includes multiple NZP CSI-RS resources, the multiple NZP CSI-RS resources correspond to the multiple TRPs; correspond to other TRPs The measurement and calculation result of the NZP CSI-RS resource is used as the interference information corresponding to the first TRP, and the CSI corresponding to the first TRP is calculated according to the interference information corresponding to the first TRP, until each TRP is calculated. Corresponding CSI; when the resource set includes one NZP CSI-RS resource, and the NZP CSI-RS resource includes port groups with different QCL information, the measurement and calculation results of the port groups corresponding to other TRPs are used as the first interference information corresponding to the TRP, and calculate the CSI corresponding to the first TRP according to the interference information corresponding to the first TRP until the CSI corresponding to each TRP is calculated; wherein the first TRP is the multiple Any one of the plurality of TRPs, and the other TRPs are TRPs other than the first TRP among the plurality of TRPs.

In a possible implementation manner, the determining unit 202 is configured to obtain, according to the network configuration information, the CSI resource configuration information used for channel measurement in any of the following manners: from the network configuration information, obtain all the CSI resource configuration information used for channel measurement; or, obtain the information indicated by the downlink control information from the network configuration information, where the information indicated by the downlink control information includes the CSI aperiodic trigger state selected by the CSI request trigger; The CSI resource configuration information for channel measurement associated with the selected CSI aperiodic trigger state is determined as the CSI resource configuration information for channel measurement.

In a possible implementation manner, the determining unit 202 is configured to, when a resource set in the CSI resource configuration information for channel measurement includes at least two NZP CSI-RS resources, determine whether the CSI calculation behavior is based on Incoherent joint transmission for CSI calculation.

In a possible implementation manner, the calculation unit 203 is configured to use the measurement and calculation results of the NZP CSI-RS resources corresponding to other TRPs as the interference information corresponding to the first TRP, The interference information calculates the CSI corresponding to the first TRP until the CSI corresponding to each TRP is calculated, wherein the first TRP is any one of the multiple TRPs, and the other TRPs are the multiple TRPs. TRPs other than the first TRP among the TRPs.

In a possible implementation, the determining unit 202 is configured to, when there are at least two port groups in one NZP CSI-RS resource in the CSI resource configuration information for channel measurement, and QCLs corresponding to different port groups When the information is different, it is determined that the CSI calculation behavior is to perform CSI calculation based on non-coherent joint transmission.

In a possible implementation manner, the calculation unit 203 is configured to use the measurement and calculation results of the port groups corresponding to other TRPs as the interference information corresponding to the first TRP, and calculate according to the interference information corresponding to the first TRP CSI corresponding to the first TRP, until the CSI corresponding to each TRP is calculated, wherein the first TRP is any one of the multiple TRPs, and the other TRPs are among the multiple TRPs TRPs other than the first TRP.

In a possible implementation manner, the determining unit 202 is configured to acquire the information indicated by the downlink control information from the network configuration information; acquire the CSI aperiodic trigger state according to the information indicated by the downlink control information Contains the indication information used to indicate the CSI calculation behavior.

In a possible implementation manner, the indication information for indicating the CSI calculation behavior is rank joint information, and the rank joint information is that the reported different values satisfy the candidate RI pairs.

With reference to the second aspect, in a possible implementation manner, the calculation unit 203 is configured to use the measurement calculation results corresponding to other TRPs in the same CSI aperiodic trigger state as the interference information corresponding to the first TRP, and calculate the CSI corresponding to the first TRP according to the interference information corresponding to the first TRP, until the CSI corresponding to each TRP is calculated, wherein the first TRP is any one of the multiple TRPs , the other TRPs are TRPs other than the first TRP among the multiple TRPs, and the measurement calculation results corresponding to the other TRPs are: in the configuration information related to the other TRPs, in the resource set used for channel measurement Measurement and calculation results of NZP CSI-RS resources.

In a possible implementation manner, when the network configuration information includes information indicated by a plurality of downlink control information, the values corresponding to the CSI requests in each downlink control information are equal.

In a possible implementation manner, the method further includes: a reporting unit, configured to report the CSI corresponding to each TRP to the network side.

In a possible implementation manner, the reporting unit is configured to report the CSI corresponding to each TRP and the validity indication information corresponding to each CSI to the network side.

In a possible implementation manner, the length of the validity indication information is 1 bit or 2 bits.

In a possible implementation manner, the reporting unit is configured to report the CSI corresponding to each TRP to the network side in any of the following manners:

In a possible implementation, when each CSI report carries CSI corresponding to one TRP, the CSI reports corresponding to each TRP have the same priority, and any even subband CSI in the CSI report corresponding to each TRP has the same priority. The priority is higher than the priority of any odd subband CSI in the CSI reports corresponding to all TRPs

The embodiments of the present application further provide a computer-readable storage medium, on which computer instructions are stored, and when the computer instructions are run, the steps of the CSI calculation method provided in any of the foregoing embodiments of the present application are executed.

An embodiment of the present application further provides another user terminal, including a memory and a processor, where the memory stores computer instructions that can be run on the processor, and when the processor runs the computer instructions, it can be executed in a method. All or part of the steps can be completed by instructing the relevant hardware through a program, and the program is to execute the steps of the CSI calculation method provided in any of the above-mentioned embodiments of the present application.

Those of ordinary skill in the art can understand that various kinds of the above-mentioned embodiments may be stored in a computer-readable storage medium, and the storage medium may include: ROM, RAM, magnetic disk or optical disk, and so on.

Although the present application is disclosed as above, the present application is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application should be based on the scope defined by the claims.

Claims

A CSI calculation method, comprising:

Receive the network configuration information delivered by the network side;

determining the CSI calculation behavior according to the network configuration information;

When the CSI calculation behavior is to perform CSI calculation based on non-coherent joint transmission, the CSI corresponding to each TRP in the multiple transmission and reception point TRPs is calculated, and the multiple TRPs correspond to one codeword.
The CSI calculation method according to claim 1, wherein determining the CSI calculation behavior according to the network configuration information comprises:

Acquire CSI report configuration information according to the network configuration information; determine CSI calculation behavior according to the CSI report configuration information;

Or, obtain CSI resource configuration information for channel measurement according to the network configuration information; determine a CSI calculation behavior according to the CSI resource configuration information for channel measurement;

Or, according to the network configuration information, obtain indication information for indicating the CSI calculation behavior; and determine the CSI calculation behavior according to the indication information for indicating the CSI calculation behavior.
The CSI calculation method according to claim 2, wherein the acquiring CSI report configuration information according to the network configuration information includes any of the following:

obtaining the CSI report configuration information from the network configuration information;

Or, obtain the information indicated by the downlink control information from the network configuration information, where the information indicated by the downlink control information includes the CSI aperiodic trigger state selected by the CSI request trigger; Report configuration information, and determine to report configuration information for the CSI.
The CSI calculation method according to claim 3, wherein determining the CSI calculation behavior according to the CSI report configuration information comprises:

obtaining rank information from the CSI report configuration information, where the rank information is used to indicate the number of ranks included in the CSI report, or the rank information is used to indicate the maximum number of ranks included in the CSI report;

When the rank information indicates that the number of ranks included in the CSI report is 2, or indicates that the maximum number of ranks included in the CSI report is 2, it is determined that the CSI calculation behavior is to perform CSI calculation based on non-coherent joint transmission.
CSI calculation method as claimed in claim 4, is characterized in that, described calculating the CSI corresponding to each TRP in the multiple sending and receiving point TRP, comprises:

When the resource set includes multiple NZP CSI-RS resources, the multiple NZP CSI-RS resources correspond to the multiple TRPs;

Taking the measurement and calculation results of the NZP CSI-RS resources corresponding to other TRPs as the interference information corresponding to the first TRP, and calculating the CSI corresponding to the first TRP according to the interference information corresponding to the first TRP, until the calculated Describe the CSI corresponding to each TRP;

When the resource set includes one NZP CSI-RS resource, and the NZP CSI-RS resource includes port groups with different QCL information, the measurement and calculation results of the port groups corresponding to other TRPs are used as the interference corresponding to the first TRP information, and calculate the CSI corresponding to the first TRP according to the interference information corresponding to the first TRP, until the CSI corresponding to each TRP is calculated;

The first TRP is any one of the multiple TRPs, and the other TRPs are TRPs other than the first TRP among the multiple TRPs.
The CSI calculation method according to claim 2, wherein the acquiring CSI resource configuration information for channel measurement according to the network configuration information comprises:

obtaining the CSI resource configuration information for channel measurement from the network configuration information;

Or, obtain the information indicated by the downlink control information from the network configuration information, where the information indicated by the downlink control information includes the CSI aperiodic trigger state selected by the CSI request trigger; associate the selected CSI aperiodic trigger state with The CSI resource configuration information used for channel measurement is determined as the CSI resource configuration information used for channel measurement.
The CSI calculation method according to claim 6, wherein determining the CSI calculation behavior according to the CSI resource configuration information used for channel measurement comprises:

When a resource set in the CSI resource configuration information for channel measurement includes at least two NZP CSI-RS resources, it is determined that the CSI calculation behavior is to perform CSI calculation based on non-coherent joint transmission.
The CSI calculation method according to claim 7, wherein the calculating the CSI corresponding to each TRP in the multiple transmitting and receiving point TRPs comprises:

Taking the measurement and calculation results of the NZP CSI-RS resources corresponding to other TRPs as the interference information corresponding to the first TRP, and calculating the CSI corresponding to the first TRP according to the interference information corresponding to the first TRP, until the calculated The CSI corresponding to each TRP, wherein the first TRP is any one of the multiple TRPs, and the other TRPs are TRPs other than the first TRP among the multiple TRPs.
The CSI calculation method according to claim 6, wherein determining the CSI calculation behavior according to the CSI resource configuration information used for channel measurement comprises:

When there are at least two port groups in one NZP CSI-RS resource in the CSI resource configuration information for channel measurement, and the QCL information corresponding to different port groups is different, it is determined that the CSI calculation behavior is to perform CSI based on non-coherent joint transmission calculate.
The CSI calculation method according to claim 9, wherein the calculating the CSI corresponding to each TRP in the multiple transmitting and receiving point TRPs comprises:

Taking the measurement and calculation results of the port groups corresponding to other TRPs as the interference information corresponding to the first TRP, and calculating the CSI corresponding to the first TRP according to the interference information corresponding to the first TRP, until each of the CSI corresponding to a TRP, wherein the first TRP is any one of the multiple TRPs, and the other TRPs are TRPs other than the first TRP among the multiple TRPs.
The CSI calculation method according to claim 2, wherein the obtaining, according to the network configuration information, the indication information for indicating the CSI calculation behavior comprises:

From the network configuration information, obtain the information indicated by the downlink control information;

According to the information indicated by the downlink control information, the indication information included in the CSI aperiodic trigger state and used to indicate the CSI calculation behavior is acquired.
The CSI calculation method according to claim 11, wherein the indication information for indicating the CSI calculation behavior is rank joint information, and the rank joint information is that the reported different values satisfy the candidate RI pairs.
The method for calculating CSI according to claim 11, wherein the calculating the CSI corresponding to each TRP in the multiple transmitting and receiving point TRPs comprises:

Taking the measurement and calculation results corresponding to other TRPs in the same CSI aperiodic trigger state as the interference information corresponding to the first TRP, and calculating the CSI corresponding to the first TRP according to the interference information corresponding to the first TRP, Until the CSI corresponding to each TRP is calculated, wherein the first TRP is any one of the multiple TRPs, and the other TRPs are TRPs other than the first TRP among the multiple TRPs , the measurement calculation result corresponding to the other TRP is: in the configuration information related to the other TRP, the measurement calculation result of the NZP CSI-RS resource in the resource set used for channel measurement.
The CSI calculation method according to any one of claims 3-11, wherein when the network configuration information includes information indicated by a plurality of downlink control information, the corresponding CSI request in each downlink control information value is equal.
The CSI calculation method according to claim 1, wherein after calculating the CSI corresponding to each TRP in the multiple transmission and reception point TRPs, the method further comprises:

The CSI corresponding to each TRP is reported to the network side.
The CSI calculation method according to claim 15, wherein the reporting the CSI corresponding to each TRP to the network side comprises:

The CSI corresponding to each TRP and the validity indication information corresponding to each CSI are reported to the network side.
The CSI calculation method according to claim 16, wherein the length of the validity indication information is 1 bit or 2 bits.
The CSI calculation method according to claim 15 or 16, wherein the calculating the CSI corresponding to each TRP in the multiple transmission and reception point TRPs comprises:

When it is detected that the validity indication information corresponding to the CSI corresponding to the second TRP in the plurality of TRPs is invalid, obtain the interference information corresponding to the first TRP, and calculate the corresponding information of the first TRP according to the interference information until the CSI corresponding to each TRP is calculated, wherein the interference information includes: measurement results corresponding to TRPs other than the second TRP among the multiple TRPs, wherein the first TRP is any one of the multiple TRPs.
The CSI calculation method according to claim 15, wherein the CSI corresponding to each TRP is reported to the network side in any of the following ways:

reporting a CSI report to the network side, and the CSI report corresponding to each TRP is carried in the CSI report;

Multiple CSI reports are reported to the network side, and each CSI report carries CSI corresponding to one TRP.
The CSI calculation method according to claim 19, wherein when each CSI report carries CSI corresponding to one TRP, the priority of the CSI report corresponding to each TRP is the same, and the CSI report corresponding to each TRP has the same priority. The priority of any even-numbered subband CSI is higher than the priority of any odd-numbered subband CSI in the CSI reports corresponding to all TRPs.
The CSI calculation method according to claim 1, wherein the calculating the CSI corresponding to each TRP in the multiple transmitting and receiving point TRPs comprises:

When the CSI corresponding to the first TRP is the same as the CSI corresponding to the second TRP among the multiple TRPs, and the CSI corresponding to the first TRP includes at least one of CRI, RI, PMI, and CQI, obtain the first TRP The interference information corresponding to the TRP, the CSI corresponding to the first TRP is calculated according to the interference information until the CSI corresponding to each TRP is calculated, and the interference information includes dividing the second TRP among the multiple TRPs A measurement and calculation result of a TRP other than , wherein the first TRP is any one of the multiple TRPs.
The CSI calculation method according to claim 1, wherein the calculating the CSI corresponding to each TRP in the multiple transmitting and receiving point TRPs comprises:

When it is detected that the RI corresponding to the CSI corresponding to the second TRP in the multiple TRPs is greater than 4, the interference information corresponding to the first TRP is obtained, and the CSI corresponding to the first TRP is calculated according to the interference information, until the calculated The CSI corresponding to each TRP, and the interference information includes measurement and calculation results of TRPs in the multiple TRPs except the second TRP, where the first TRP is any one of the multiple TRPs. one.
A user terminal, comprising:

a receiving unit, configured to receive the network configuration information delivered by the network side;

a determining unit, configured to determine the CSI calculation behavior according to the network configuration information;

A calculation unit, configured to calculate CSI corresponding to each TRP in the multiple transmission and reception point TRPs when the CSI calculation behavior is based on non-coherent joint transmission for CSI calculation, and the multiple TRPs correspond to one codeword.
The user terminal according to claim 23, wherein the determining unit is configured to determine the CSI calculation behavior according to the network configuration information by adopting any one of the following methods: obtaining a CSI report configuration according to the network configuration information information; determine CSI calculation behavior according to the CSI report configuration information; or, obtain CSI resource configuration information for channel measurement according to the network configuration information; determine CSI according to the CSI resource configuration information for channel measurement calculation behavior; or, according to the network configuration information, obtain indication information used to indicate the CSI calculation behavior; and determine the CSI calculation behavior according to the indication information used to indicate the CSI calculation behavior.
The user terminal according to claim 24, wherein the determining unit is configured to obtain the CSI report configuration information according to the network configuration information in any one of the following ways: from the network configuration information, obtain all the The CSI report configuration information; or, obtain the information indicated by the downlink control information from the network configuration information, where the information indicated by the downlink control information includes the CSI aperiodic trigger state selected by the CSI request trigger; The CSI report configuration information associated with the trigger state is determined to be the CSI report configuration information.
The user terminal according to claim 25, wherein the determining unit is configured to obtain rank information from the CSI report configuration information, where the rank information is used to indicate the number of ranks included in the CSI report, or the The rank information is used to indicate the maximum number of ranks included in the CSI report; when the rank information indicates that the number of ranks included in the CSI report is 2, or indicates that the maximum number of ranks included in the CSI report is 2, it is determined that the CSI calculation behavior is based on incoherence Joint transmission for CSI calculation.
The user terminal according to claim 26, wherein the calculation unit is configured to, when the resource set includes multiple NZP CSI-RS resources, the multiple NZP CSI-RS resources correspond to the multiple TRPs Taking the measurement and calculation result of the NZP CSI-RS resources corresponding to other TRPs as the interference information corresponding to the first TRP, and calculating the CSI corresponding to the first TRP according to the interference information corresponding to the first TRP, until calculating CSI corresponding to each TRP; when the resource set includes one NZP CSI-RS resource, and the NZP CSI-RS resource includes port groups with different QCL information, the measurement calculation results of the port groups corresponding to other TRPs are calculated As the interference information corresponding to the first TRP, and calculate the CSI corresponding to the first TRP according to the interference information corresponding to the first TRP, until the CSI corresponding to each TRP is calculated; wherein, the first TRP The TRP is any one of the multiple TRPs, and the other TRPs are TRPs other than the first TRP among the multiple TRPs.
The user terminal according to claim 24, wherein the determining unit is configured to obtain, according to the network configuration information, the CSI resource configuration information for channel measurement in any one of the following ways: from the network configuration In the information, obtain the CSI resource configuration information used for channel measurement; or, obtain the information indicated by the downlink control information from the network configuration information, where the information indicated by the downlink control information includes the CSI that is selected by the CSI request trigger Aperiodic trigger state; determine the CSI resource configuration information for channel measurement associated with the selected CSI aperiodic trigger state as the CSI resource configuration information for channel measurement.
The user terminal according to claim 28, wherein the determining unit is configured to determine when a resource set in the CSI resource configuration information for channel measurement includes at least two NZP CSI-RS resources The CSI calculation behavior is based on non-coherent joint transmission for CSI calculation.
The user terminal according to claim 29, wherein the calculation unit is configured to use the measurement and calculation results of the NZP CSI-RS resources corresponding to other TRPs as the interference information corresponding to the first TRP, and calculate according to the The interference information corresponding to the first TRP calculates the CSI corresponding to the first TRP until the CSI corresponding to each TRP is calculated, wherein the first TRP is any one of the multiple TRPs, and the other A TRP is a TRP other than the first TRP among the plurality of TRPs.
The user terminal according to claim 28, wherein the determining unit is configured to, when there are at least two port groups in one NZP CSI-RS resource in the CSI resource configuration information for channel measurement, and they are different When the QCL information corresponding to the port group is different, it is determined that the CSI calculation behavior is to perform CSI calculation based on non-coherent joint transmission.
The user terminal according to claim 31, wherein the calculation unit is configured to use the measurement and calculation results of the port groups corresponding to other TRPs as the interference information corresponding to the first TRP, and calculate according to the first TRP. The corresponding interference information calculates the CSI corresponding to the first TRP, until the CSI corresponding to each TRP is calculated, wherein the first TRP is any one of the multiple TRPs, and the other TRPs are all TRPs other than the first TRP among the plurality of TRPs.
The user terminal according to claim 24, wherein the determining unit is configured to obtain the information indicated by the downlink control information from the network configuration information; and obtain the information indicated by the downlink control information according to the information indicated by the downlink control information. The indication information that is included in the CSI aperiodic trigger state and is used to indicate the CSI calculation behavior.
The user terminal according to claim 33, wherein the indication information for indicating the CSI calculation behavior is rank joint information, and the rank joint information is that the reported different values satisfy the candidate RI pairs.
The user terminal according to claim 33, wherein the calculation unit is configured to use the measurement calculation results corresponding to other TRPs in the same CSI aperiodic trigger state as the interference information corresponding to the first TRP, and calculate the CSI corresponding to the first TRP according to the interference information corresponding to the first TRP, until the CSI corresponding to each TRP is calculated, wherein the first TRP is any one of the multiple TRPs , the other TRPs are TRPs other than the first TRP among the multiple TRPs, and the measurement calculation results corresponding to the other TRPs are: in the configuration information related to the other TRPs, in the resource set used for channel measurement Measurement and calculation results of NZP CSI-RS resources.
The user terminal according to any one of claims 25, 28, and 33, wherein when the network configuration information includes information indicated by a plurality of downlink control information, the CSI request in each downlink control information corresponds to The values are equal.
The user terminal according to claim 23, further comprising: a reporting unit, configured to report the CSI corresponding to each TRP to the network side.
The user terminal according to claim 37, wherein the reporting unit is configured to report the CSI corresponding to each TRP and the validity indication information corresponding to each CSI to the network side.
The user terminal according to claim 38, wherein the length of the validity indication information is 1 bit or 2 bits.
The user terminal according to claim 37, wherein the reporting unit is configured to report the CSI corresponding to each TRP to the network side in any of the following ways:

reporting a CSI report to the network side, and the CSI report corresponding to each TRP is carried in the CSI report;

Multiple CSI reports are reported to the network side, and each CSI report carries CSI corresponding to one TRP.
The user terminal according to claim 40, wherein when each CSI report carries CSI corresponding to one TRP, the priority of the CSI report corresponding to each TRP is the same, and any CSI report corresponding to each TRP has any priority. The priority of an even-numbered subband CSI is higher than the priority of any odd-numbered subband CSI in the CSI reports corresponding to all TRPs.
A computer-readable storage medium on which computer instructions are stored, characterized in that, when the computer instructions are executed, the steps of the CSI calculation method described in any one of claims 1-22 are executed.
A user terminal, comprising a memory and a processor, wherein the memory stores computer instructions that can be run on the processor, wherein the processor executes any of claims 1-22 when running the computer instructions. A step of the CSI calculation method.
A chip, comprising a processor, a memory, and a computer program or instruction stored on the memory, characterized in that the processor executes the computer program or instruction to implement the method described in any one of claims 1-22 Steps of the CSI calculation method.
A chip module includes a transceiver component and a chip, the chip includes a processor, a memory, and a computer program or instruction stored on the memory, characterized in that the processor executes the computer program or instruction to achieve The steps of the CSI calculation method according to any one of claims 1-22.