WO2021016809A1 - Method for measuring channel state information (csi), and terminal device - Google Patents

Abstract

The present application relates to a method for measuring channel state information (CSI), and a terminal device. The method comprises: according to sub-band information contained in a first CSI and sub-band information contained in a second CSI, determining an interference measurement resource of a target CSI, said target CSI being at least one of the first CSI and the second CSI; according to said interference measurement resource, performing CSI measurement of the target CSI. The method and terminal device thereof can, according to the sub-band information contained in a first CSI and a second CSI, determine an interference measurement resource of the first CSI and/or the second CSI, thus the interference between TRPs is taken into account in the CSI measurement, improving the accuracy of CSI measurement during non-coherent joint transmission.

Description

Method for measuring channel state information CSI and terminal equipment 【Technical Field】

This application relates to the field of communication technology, and in particular to a method for measuring channel state information CSI and terminal equipment.

【Background technique】

The NR (New Radio) system is the hottest research and development focus in the communications industry today. A significant difference between it and the existing LTE (long term evolution) technology is that the NR system introduces multiple TRP ( Transmission/reception point) downlink and uplink non-coherent transmission.

In the prior art, a network device can configure respective CSI reporting for different TRPs, for example, configure the CSI reporting configuration of two TRPs through RRC (Radio Resource Control) parameters, and the terminal device is based on the two CSIs. Report configuration for CSI report. The CSI reporting of different TRPs may use different CSI measurement resources, such as channel measurement resources or interference measurement resources, and the terminal performs CSI measurement of each TRP based on independent CSI measurement resources.

However, in the prior art, when the terminal performs CSI measurement, due to interference between TRPs, accurate CSI measurement cannot be performed.

[Content of the invention]

This application provides a method and terminal equipment for measuring channel state information CSI.

This application provides the following technical solutions:

In one aspect, a method for measuring channel state information CSI is provided, which is suitable for terminal equipment, and includes: determining the interference measurement of the target CSI according to the subband information contained in the first CSI and the subband information contained in the second CSI Resource, the target CSI is at least one of the first CSI and the second CSI;

Perform CSI measurement of the target CSI according to the interference measurement resource.

In another aspect, a terminal device is provided, and the terminal device includes:

The interference resource determination module is configured to determine the interference measurement resource of the target CSI according to the subband information contained in the first CSI and the subband information contained in the second CSI, where the target CSI is the first CSI and the second CSI. At least one of the two CSI;

The CSI measurement module is configured to perform CSI measurement of the target CSI according to the interference measurement resource.

In another aspect, there is also provided a terminal device, the terminal device comprising: a processor and a memory, characterized in that: the memory stores an uplink control channel transmission program that can be run on the processor, and the processing When the device executes the uplink control channel transmission program, the method for measuring the channel state information CSI as described above is realized.

In another aspect, there is also provided a computer-readable storage medium, characterized in that a resource selection program is stored on the computer-readable storage medium, and when the resource selection program is executed by a processor, the aforementioned channel state is realized Information CSI measurement method.

The beneficial effects of this application are:

Since the data transmitted by two TRPs may overlap, the interference situation when the data transmitted by the TRP overlaps is completely different from the interference situation when the data transmitted by the TRP does not overlap. In the technical solution provided in this application, the terminal device determines whether there is interference between the two CSIs according to the subband information contained in the first CSI and the subband information contained in the second CSI, and then determines the first CSI And/or the interference measurement resource of the second CSI, so that the interference between TRPs is taken into account during CSI measurement, and the accuracy of CSI measurement during incoherent joint transmission is improved.

【Explanation of drawings】

Figures 1-a and 1-b are a scenario applied in the specific implementation of this application: multiple TRPs use different control channels to independently schedule CSI feedback modes under multiple PDSCHs of a terminal.

Figure 2 is another scenario applied by the specific implementation of this application: a CSI feedback mode of multiple TRPs scheduled by a single PDCCH.

FIG. 3 is a flowchart of specific implementation manner 1 of a method for measuring channel state information CSI of this application.

4 is a schematic diagram of the terminal device using the signals of the first TRP and the second TRP as the interference of each other when the overlapping subbands and non-overlapping subbands are calculated by using the same interference measurement resource in the first embodiment.

FIG. 5 is a schematic diagram of overlapping subbands and non-overlapping subbands using different interference measurement resources to perform CIS measurement in the first embodiment.

FIG. 6 is a block diagram of a second specific implementation manner of a terminal device of this application.

FIG. 7 is a schematic structural diagram of a terminal device according to the third embodiment of this application.

【Detailed ways】

In order to make the purpose, technical solutions, and advantages of this application clearer, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application, and not used to limit the application. This application can be implemented in many different forms and is not limited to the embodiments described herein. The purpose of providing these examples is to make the understanding of the disclosure of this application more thorough and comprehensive.

The specific implementation manner of this application discloses a method and terminal equipment for measuring channel state information CSI. The system architecture used in the following specific implementations of the present application is an NR system, which introduces downlink and uplink non-coherent transmission based on multiple transmission points TRP. Among them, the backhaul connection between TRPs can be ideal or non-ideal. Under the ideal backhaul connection, TRPs can quickly and dynamically exchange information; under the non-ideal backhaul connection, the TRP can have a relatively long delay. Only quasi-static information can be exchanged between them. In the downlink non-coherent transmission, multiple TRPs can use different control channels to independently schedule multiple PDSCH (Physical Downlink Shared Channel) transmissions of a terminal, or use the same control channel to schedule the transmission of different TRPs. Among them, different TRP data uses different transport layers, and the latter can only be used in the case of ideal backhaul. However, no matter which scheduling method is adopted, the terminal device needs to periodically and/or non-periodically report the current CSI (Channel State Information) to the network device, so that the network device can learn when the network device and user equipment are transmitting data Channel state experienced.

For multiple TRPs using different control channels to independently schedule the downlink transmission of multiple PDSCHs of a terminal, the scheduled PDSCHs can be transmitted in the same time slot or in different time slots. At this time, the terminal needs to support simultaneous reception of PDCCH (Physical Downlink Control Channel) and PDSCH from different TRPs, and feedback acknowledgement/non-acknowledgement information (ACK/NACK) and CSI. When the terminal feeds back ACK/NACK and CSI, the ACK/NACK and CSI can be fed back to different TRPs that transmit the corresponding PDSCH (as shown in Figure 1-a), or they can be combined and reported to one TRP (as shown in Figure 1-b). The former can be used in ideal backhaul and non-ideal backhaul scenarios, and the latter can only be used in ideal backhaul scenarios.

For multiple TRP downlink transmissions scheduled by a single PDCCH, the same DCI (Downlink control information, downlink control information) can schedule multiple transmission layers from different TRPs. Among them, the transmission layers from different TRPs use DMRS (Demodulation Reference Signal) ports in different CDM (code division multiplexing) groups, and use different TCI (Transmission Configuration Indication) ports to transmit Configuration indication) status. The network equipment needs to indicate in one DCI the DMRS ports from different CDM groups and the TCI states corresponding to the different CDM groups respectively, so as to support different DMRS ports to use different beams for transmission (as shown in Figure 2). In this case, hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback and CSI reporting can reuse mechanisms in the existing protocol. This solution can only be used in scenarios with ideal backhaul.

The following specific implementation manners of this application will elaborate on how the terminal device takes the interference between TRPs into consideration when performing CSI measurement to improve the accuracy of CSI measurement during non-coherent joint transmission.

It should be understood that the term "and/or" in this application is used to describe the association relationship between associated objects, indicating that three relationships can exist, for example: A and/or B, indicating that A can exist alone, B, and the three situations of A and B at the same time. In addition, the character "/" in this application indicates that the associated objects before and after are in an "or" relationship.

Specific embodiment one

Please refer to FIG. 3, which is a flowchart of the first embodiment of a method for measuring channel state information CSI of this application. The method is applied to a terminal device. The method includes:

Step 301: Determine the interference measurement resource of the target CSI according to the subband information contained in the first CSI and the subband information contained in the second CSI, where the target CSI is the first CSI and the second CSI. at least one;

Step 302: Perform CSI measurement of the target CSI according to the interference measurement resource.

In a feasible solution, step 301 includes:

When the subband information included in the first CSI and the subband indicated by the subband information included in the second CSI overlap, the interference measurement resource of the target CSI is determined. Wherein, the interference measurement resource for determining the target CSI specifically includes:

When the target CSI is the second CSI, use the CSI measurement resource of the first CSI as the interference measurement resource of the second CSI; and/or,

When the target CSI is the first CSI, use the CSI measurement resource of the second CSI as the interference measurement resource of the first CSI.

Optionally, the CSI measurement resource includes a non-zero power channel state information reference signal CSI-RS resource used for channel measurement.

In practical applications, the subband information included in the first CSI and the subband information included in the second CSI indicate the M subbands selected by the terminal device from all the configured N subbands. At the same time, the first CSI and the second CSI also include the subband CQI (Channel Quality Indicator) corresponding to the selected M subbands, and the network device can be based on the M subbands and the subband CQI Schedule.

In practical applications, the subbands indicated by the subband information of the first CSI and the second CSI may overlap (including partial overlap or complete overlap). Partial overlap means that the subband indicated by the subband information included in the first CSI and the subband indicated by the subband information included in the second CSI partially overlap. For example, the subband indicated by the subband information contained in the first CSI is subband {0,1,4,5}, and the subband indicated by the subband information contained in the second CSI is subband {2,3,4 ,5}. Complete overlap means that the two subbands overlap. For example, the subband information included in the first CSI and the subband indicated by the subband information included in the second CSI are both subband {0, 1, 4, 5}.

In this embodiment, the terminal device may determine whether there is interference in the first CSI and/or the second CSI according to whether the subbands indicated by the subband information included in each of the first CSI and the second CSI overlap. When interference does exist, determine the interference measurement resource of the first CSI and/or the second CSI. E.g:

When the subband information included in the first CSI and the subband indicated by the subband information included in the second CSI overlap, it is confirmed that there is interference.

At this time, if the target CSI is the second CSI, the CSI measurement resource of the first CSI is used as the interference measurement resource of the second CSI. Specifically, the CSI measurement resource here may refer to a non-zero power CSI-RS resource used for channel measurement of the first CSI.

Correspondingly, if the target CSI is the first CSI, the CSI measurement resource of the second CSI is used as the interference measurement resource of the first CSI; specifically, the CSI measurement resource here may refer to the non-channel measurement of the second CSI. Zero power CSI-RS resources.

In practical applications, the embodiments of the present application may be used only for the CSI measurement of the first CSI, or only for the CSI measurement of the second CSI, or used for the CSI measurement of the first CSI and the second CSI at the same time.

In the first embodiment provided by this application, when there are two TRPs, namely the first TRP and the second TRP, the first CSI corresponding to the first TRP and the second CSI corresponding to the second TRP can be indicated according to Whether there is overlap between the sub-bands, determine whether there is interference between the two TRPs. When there is an overlap, confirm that there is interference between the two TRPs. At this time, the terminal device can use the signals of the first TRP and the second TRP as interference measurement resources of each other, thereby estimating the interference during resource conflicts and obtaining more accurate CSI measurement.

Please continue to refer to FIG. 4, for CSI measurement, the CSI measurement resources of the first CSI and the second CSI are the interference measurement resources of each other. That is, when the subbands of the first CSI and the second CSI overlap, the interference measurement resource of the first CSI includes the CSI measurement resource of the second CSI; similarly, the interference measurement resource of the second CSI includes the interference measurement resource of the first CSI. CSI measurement resources.

Please continue to refer to Figure 5. In a feasible solution, step 301 includes:

Determine different interference measurement resources for the target CSI on the overlapping subbands and non-overlapping subbands.

In this application, the subbands that overlap between the subband indicated by the subband information included in the second CSI and the subband indicated by the subband information included in the first CSI are referred to as overlapping subbands. Among the subbands indicated by the subband information included in the first CSI and the second CSI, other subbands except for the overlapping subbands are called non-overlapping subbands.

Optionally, the solution includes: when the target CSI is the second CSI, using the CSI measurement resource of the first CSI as the interference measurement resource of the second CSI on the overlapping subband; and/ or,

When the target CSI is the first CSI, the CSI measurement resource of the second CSI is used as the interference measurement resource of the first CSI on the overlapping subband.

Specifically, for the second CSI, when the CSI measurement resource of the first CSI is used as the interference measurement resource of the second CSI, the interference measurement resources used by overlapping subbands and non-overlapping subbands are different. At this time, on the overlapping subbands, the interference measurement resource of the second CSI includes the CSI measurement resource of the first CSI. Correspondingly, for the first CSI, when the CSI measurement resource of the second CSI is used as the interference measurement resource of the first CSI, the interference measurement resources used by overlapping subbands and non-overlapping subbands may also be different. , On overlapping subbands, the interference measurement resource of the first CSI includes the CSI measurement resource of the second CSI.

For example, the subband indicated by the subband information contained in the first CSI is subband {0,1,8,9}, and the subband indicated by the subband information contained in the second CSI is subband {2,3,8 ,9}, the overlapping subband is subband {8,9}. For the first CSI, the non-overlapping subband is subband {0,1}, and the overlapping subband is subband {8,9}, on non-overlapping subband {0,1} and overlapping subband {8,9} Different interference measurement resources are used; for the second CSI, different interference measurement resources are used on the non-overlapping subband {2, 3} and the overlapping subband {8, 9}. Taking the second CSI as an example, on the overlapping subband {8,9}, the terminal uses the CSI measurement resource of the first CSI as the interference measurement resource of the second CSI; on the non-overlapping subband {2,3}, the terminal does not The CSI measurement resource of the first CSI is used as the interference measurement resource of the second CSI, and only the interference measurement resource configured by the network is used as the interference measurement resource of the second CSI.

As shown in Fig. 5, when the second CSI overlaps with the subband indicated by the subband information contained in the first CSI, the interference resources used by the overlapping subbands include the measurement resources of the first CSI (the first non-zero power CSI -RS) and the interference measurement resource configured by the network as the second CSI configuration (second IMR), and the interference resources used by the non-overlapping subbands only include the second IMR.

In this specific embodiment, when the terminal device measures the interference corresponding to the second CSI, the interference obtained on the non-overlapping subband {2, 3} where resource conflicts do not occur and the overlapping subband {8, 9} where resource conflicts may occur It is different, so that the SINR can be accurately estimated on each subband, and a more reliable CQI can be obtained. On overlapping subbands, that is, the terminal device uses the CSI measurement resource of the first CSI as the interference measurement resource of the second CSI.

In the first embodiment of the present application, the first CSI and the second CSI need to meet at least one of the following conditions:

Condition one

If the first CSI and the second CSI are non-periodically reported CSI, the reporting of the first CSI and the second CSI is triggered by the same downlink control information DCI;

Condition two

There is a mapping relationship between the physical resources used to report the first CSI and the physical resources used to report the second CSI;

Condition three

The first CSI and the second CSI are associated with different control resource sets CORESET group indexes.

The following is a detailed description of the above conditions:

For condition 1, if the first CSI and the second CSI are CSI reported aperiodically, the reporting of the first CSI and the second CSI is triggered by the same DCI. This method is mainly used in an ideal backhaul situation. At this time, the CSI report corresponding to two TRPs can be triggered by the same DCI, thereby saving the overhead of triggering signaling.

For condition two, the first CSI and the second CSI may be reported through PUCCH or PUSCH.

The mapping relationship may be predetermined by the terminal device and the network device in advance, for example, the physical resources used by the first CSI and the second CSI are the same PUSCH or the same PUCCH; or, the physical resources used by the first CSI and the second CSI It is the PUSCH or PUCCH in the same time slot; or, the first CSI and the second CSI are reported in the same or adjacent time slots; or, the time domain resource used to report the first CSI and the time domain used to report the second CSI The offset between resources does not exceed a preset value.

Based on the above mapping relationship, the terminal can determine whether the first CSI and the second CSI have an association relationship defined in this application, and thus need to apply the measurement method provided in the first embodiment to confirm that the first CSI and the second CSI correspond to each other. Whether there is interference between TRPs, when there is interference, use this measurement method to measure the target CSI more accurately.

For condition three, the first CSI CSI configuration information and the CSI configuration information of the second CSI respectively indicate the CORESET group indexes associated with the first CSI and the second CSI. Therefore, in the first embodiment, the terminal device may determine the CORESET group index associated with the first CSI and the second CSI through the CSI configuration information of the first CSI and the second CSI.

In practical applications, the DCI used to schedule PDSCH transmitted by different TRPs can be carried by different CORESETs, that is, multiple CORESETs are configured on the network side, and each TRP is scheduled with its own CORESET, that is, different TRPs can be distinguished by CORESET. For example, a network device can configure a CORESET group index for each CORESET, and different indexes correspond to different TRPs. When the terminal feeds back CSI, it needs to feed back the CSI corresponding to each TRP. The CSI includes RI, PMI, CQI, etc., and can be used to schedule downlink transmissions of respective TRPs.

Specifically, the CORESET group index associated with the CSI can be indicated through the CSI report configuration. For example, in the CSI report configuration corresponding to the first CSI indicated by the RRC parameter CSI-Report-config, a parameter of CORESET group index (CORESET_Group_Index) may be included to indicate the CORESET group index associated with the first CSI.

Further, if the first CSI is a non-periodically reported CSI, the CORESET group index associated with the first CSI is the same as the CORESET group index of the CORESET where the DCI that triggered the first CSI report is located. For example, the CORESET group index associated with the first CSI is the CORESET group index of the CORESET where the DCI reported by the first CSI is triggered, or the value of the CORESET group index associated with the first CSI is the same as that of the trigger The value of the CORESET group index of the CORESET where the DCI reported by the first CSI is located is the same.

Similarly, when the second CSI is a non-periodically reported CSI, the CORESET group index associated with the second CSI is the same as the CORESET group index of the CORESET where the DCI that triggers the second CSI report is located.

Since different CORESET group indexes can correspond to different TRPs, this condition three can support the first CSI and the second CSI to be used for downlink transmission of two TRPs respectively.

In a feasible solution, step 302 includes:

Performing interference measurement of the target CSI according to the interference measurement resource;

Performing the CSI measurement of the target CSI based on the result of the interference measurement.

Taking the target CSI as the first CSI as an example, when the terminal device performs interference measurement, it can perform measurement based on the interference measurement resource (such as the measurement resource of the second CSI) determined in step 301 to obtain the first interference measurement result. Other interference measurement resources configured by the device are measured to obtain a second interference measurement result, and the first CSI is calculated by combining the first interference measurement result and the second interference measurement result. For example, the terminal device adds the covariance matrix of the first interference measurement result and the covariance matrix of the second interference measurement result, and then estimates the SINR to obtain the CQI in the first CSI.

In a feasible solution, step 302 includes:

When the target CSI is the second CSI, the channel measurement result of the first CSI is used as the interference measurement resource of the second CSI. In this case, the channel measurement result of the first CSI can be directly performed The second CSI measurement; or,

When the target CSI is the first CSI, the channel measurement result of the second CSI is used as the interference measurement resource of the first CSI. In this case, the channel measurement result of the second CSI can be directly performed The first CSI measurement.

In this solution, taking the measurement of the second CSI as an example, when the terminal device directly uses the channel measurement result corresponding to the first CSI as the interference measurement resource of the second CSI, there is no need to perform interference measurement based on the interference measurement resource to obtain the interference measurement. After the result, the second CSI measurement is performed, but the channel measurement result corresponding to the first CSI can be directly used as the interference measurement result of the second CSI, and the second CSI measurement is performed, thereby reducing the measurement complexity of the terminal.

For example, the terminal may use the channel covariance matrix corresponding to the first CSI as the interference covariance matrix corresponding to the second CSI (or as a part of the interference covariance matrix) to perform SINR estimation to obtain the CQI of the second CSI.

In this solution, the terminal device may also combine the channel measurement result of the first CSI with other interference measurement results as the interference measurement result of the second CSI, and calculate the second CSI according to this interference measurement structure. Here, the other interference measurement results are interference measurement results obtained by performing interference measurement based on other interference measurement resources configured by the network device. Conversely, the channel measurement result of the second CSI can also be combined with other interference measurement results to measure the first CSI.

In a feasible solution, after step 302, the method further includes:

The terminal device reports the measured target CSI to the network side device.

The channel state information CSI measurement method of this embodiment can determine the interference measurement resources of the first CSI and/or the second CSI according to the subband information contained in the first CSI and the second CSI, thereby The interference between TRPs is taken into account during the measurement to improve the accuracy of the CSI measurement during incoherent joint transmission.

The resource selection method provided by the foregoing specific implementation manners is applicable to any NR system.

Specific embodiment two

Please refer to FIG. 6, which is a block diagram of a specific implementation manner of a terminal device of this application. For the details in the second embodiment, please refer to the first embodiment above, which will not be repeated here. The terminal equipment includes:

The interference resource determination module 601 is configured to determine the interference measurement resource of the target CSI according to the subband information contained in the first CSI and the subband information contained in the second CSI, where the target CSI is the first CSI and the subband information. At least one of the second CSI;

The CSI measurement module 602 is configured to perform CSI measurement of the target CSI according to the interference measurement resource.

In a feasible solution, the interference resource determining module is further configured to determine when the subband information included in the first CSI and the subband information included in the second CSI overlap The interference measurement resource of the target CSI.

When the subbands indicated by the subband information contained in the first CSI and the second CSI overlap, in a feasible solution, the interference resource determination module, when the target CSI is the second CSI , Specifically configured to use the CSI measurement resource of the first CSI as the interference measurement resource of the second CSI; and/or, when the target CSI is the first CSI, set the CSI of the second CSI The measurement resource is used as the interference measurement resource of the first CSI.

In an optional solution, the CSI measurement resource includes a non-zero power channel state information reference signal CSI-RS resource used for channel measurement.

In an optional solution, the interference resource determining module 601 is further configured to determine different interference measurement resources for the target CSI on overlapping subbands and non-overlapping subbands, where the overlapping subband is the second The subband indicated by the subband information included in the CSI and the subband indicated by the subband information included in the first CSI overlap.

In an optional solution, the interference resource determining module 601 is further configured to use the CSI measurement resource of the first CSI as the interference measurement resource of the second CSI on the overlapping subband; And/or, it is further configured to use the CSI measurement resource of the second CSI as the interference measurement resource of the first CSI on the overlapping subband.

In the second embodiment, the conditions that the first CSI and the second CSI need to meet, please refer to the description in the first embodiment above, and details are not repeated here.

In an optional solution, the CSI measurement module 602 is specifically configured to perform interference measurement of the target CSI according to the interference measurement resource, and perform CSI measurement of the target CSI based on a result of the interference measurement.

In an optional solution, the CSI measurement module 602 is specifically configured to measure the channel of the first CSI when the CSI measurement resource of the first CSI is used as the interference measurement resource of the second CSI. The result is used as the interference measurement result of the second CSI, and the second CSI is calculated according to the interference measurement result; or

The CSI measurement module 602 is specifically configured to use the channel measurement result of the second CSI as the interference measurement resource of the first CSI when the CSI measurement resource of the second CSI is used as the interference measurement resource of the first CSI. The interference measurement result, and the first CSI is calculated according to the interference measurement result.

In an optional solution, the CSI measurement module 602 is specifically configured to use the channel measurement result of the first CSI as the interference measurement resource of the second CSI, and according to the channel measurement result of the first CSI Directly perform the second CSI measurement; or,

The CSI measurement module 602 is specifically configured to use the channel measurement result of the second CSI as the interference measurement resource of the first CSI, and directly perform the first CSI measurement according to the channel measurement result of the second CSI .

Optionally, the terminal device further includes:

The sending module is used to report the measured target CSI to the network side device.

Specific embodiment three

Please refer to FIG. 7, which is a schematic structural diagram of a terminal device according to the third embodiment of the present application. The terminal device includes a processor 710, a memory 720, a user interface 730, and a network interface 740. The above-mentioned components of the terminal device realize the communication connection between each other through the bus system.

The user interface 730 may be a hardware device that can interact with the user by a display or a pointing device (touch panel or touch screen, etc.). An operating system and application programs are stored in the memory 720.

After the processor 710 receives the first message issued by the network device through the above-mentioned network structure 740, it reads the operating system and/or application program stored in the memory 720, executes the steps in the above-mentioned specific embodiment 1, and confirms two TRPs. Whether there is interference between them, when there is interference, accurate measurement of the target CSI.

The processor 710 may also be an independent component or a collective name for multiple processing elements. For example, it may be a CPU, an ASIC, or one or more integrated circuits configured to implement the above methods, such as at least one microprocessor DSP, or at least one programmable gate FPGA.

Specific embodiment four

The fourth embodiment of the present application provides a computer-readable storage medium, characterized in that a resource selection program is stored on the computer-readable storage medium, and when the resource selection program is executed by a processor, the above-mentioned specific embodiment 1 The steps of the channel state information CSI measurement method.

This application is described with reference to flowcharts and/or block diagrams of methods, equipment (systems), and computer program products according to the embodiments of this application. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment are generated It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram. The program may be stored in a computer-readable storage medium, which may include: read only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, etc.

The foregoing specific embodiments illustrate but do not limit the application, and those skilled in the art can design multiple alternative examples within the scope of the claims. Those skilled in the art should be aware that, within the scope of this application as defined by the appended claims, appropriate adjustments, modifications, etc. can be made to specific implementation schemes. Therefore, any modifications and changes made in accordance with the spirit and principles of this application are within the scope of this application as defined by the appended claims.

Claims (28)

A method for measuring channel state information CSI is suitable for terminal equipment, and is characterized in that the method includes: Determine the interference measurement resource of the target CSI according to the subband information included in the first CSI and the subband information included in the second CSI, where the target CSI is at least one of the first CSI and the second CSI; Perform CSI measurement of the target CSI according to the interference measurement resource. The method according to claim 1, wherein the determining the interference measurement resource of the target CSI according to the subband information contained in the first CSI and the subband information contained in the second CSI comprises: When the subband information included in the first CSI and the subband indicated by the subband information included in the second CSI overlap, the interference measurement resource of the target CSI is determined. The method according to claim 2, wherein the determining the interference measurement resource of the target CSI comprises: When the target CSI is the second CSI, use the CSI measurement resource of the first CSI as the interference measurement resource of the second CSI; and/or, When the target CSI is the first CSI, use the CSI measurement resource of the second CSI as the interference measurement resource of the first CSI. The method according to claim 3, characterized in that: The CSI measurement resource includes a non-zero power channel state information reference signal CSI-RS resource used for channel measurement. The method according to claim 1, wherein the determining the interference measurement resource of the target CSI according to the subband information contained in the first CSI and the subband information contained in the second CSI comprises: Different interference measurement resources are determined for the target CSI on overlapping subbands and non-overlapping subbands, where the overlapping subbands are the subbands indicated by the subband information contained in the second CSI and those in the first CSI. The subbands that overlap among the subbands indicated by the included subband information. The method according to claim 5, wherein the step of determining different interference measurement resources for the target CSI on the overlapping subbands comprises: Using the CSI measurement resource of the first CSI as the interference measurement resource of the second CSI on the overlapping subband; and/or On the overlapping subband, use the CSI measurement resource of the second CSI as the interference measurement resource of the first CSI. The method according to any one of claims 1 to 6, wherein the first CSI and the second CSI satisfy at least one of the following conditions: If the first CSI and the second CSI are non-periodically reported CSI, the reporting of the first CSI and the second CSI is triggered by the same downlink control information DCI; There is a mapping relationship between the physical resources used to report the first CSI and the physical resources used to report the second CSI; The first CSI and the second CSI are associated with different control resource sets CORESET group indexes. The method according to claim 7, wherein the mapping relationship comprises: the physical resources used for reporting the first CSI and the physical resources used for reporting the second CSI are in the same time slot. The method according to claim 7, wherein the first CSI and the second CSI are associated with different control resource sets CORESET group indexes, specifically: The CSI configuration information of the first CSI and the CSI configuration information of the second CSI respectively indicate respective CORESET group indexes associated with the first CSI and the second CSI. The method according to claim 9, characterized in that: When the first CSI is a non-periodically reported CSI, the CORESET group index associated with the first CSI is the same as the CORESET group index of the CORESET where the DCI that triggered the first CSI report is located; and/or, When the second CSI is a non-periodically reported CSI, the CORESET group index associated with the second CSI is the same as the CORESET group index of the CORESET where the DCI that triggers the second CSI report is located. 5. The method according to claim 1, wherein the "performing CSI measurement of the target CSI according to the interference measurement resource" comprises: Performing interference measurement of the target CSI according to the interference measurement resource; Performing the CSI measurement of the target CSI based on the result of the interference measurement. The method according to claim 1, wherein the performing CSI measurement of the target CSI according to the interference measurement resource comprises: When the target CSI is the second CSI, use the CSI measurement resource of the first CSI as the interference measurement resource of the second CSI, and use the channel measurement result of the first CSI as the second CSI. CSI interference measurement results; or When the target CSI is the first CSI, use the CSI measurement resource of the second CSI as the interference measurement resource of the first CSI, and use the channel measurement result of the second CSI as the first CSI. CSI interference measurement results. The method of claim 1, wherein the method further comprises: Report the measured target CSI. A terminal device, characterized in that the terminal device includes: The interference resource determination module is configured to determine the interference measurement resource of the target CSI according to the subband information CSI contained in the first CSI and the subband information contained in the second CSI, where the target CSI is the first CSI and the second CSI. At least one of the two CSI; The CSI measurement module is configured to perform CSI measurement of the target CSI according to the interference measurement resource. The terminal device according to claim 14, wherein the interference resource determining module is further configured to: when indicated by the subband information contained in the first CSI and the subband information contained in the second CSI When the subbands overlap, determine the interference measurement resource of the target CSI. The terminal device according to claim 15, wherein when the target CSI is the second CSI, the interference resource determining module is specifically configured to use the CSI measurement resource of the first CSI as the The interference measurement resource of the second CSI; and/or, When the target CSI is the first CSI, the interference resource determination module is specifically configured to use the CSI measurement resource of the second CSI as the interference measurement resource of the first CSI. The terminal device according to claim 16, characterized in that: The CSI measurement resource includes a non-zero power channel state information reference signal CSI-RS resource used for channel measurement. The terminal device according to claim 14, wherein the interference resource determining module is further configured to determine different interference measurement resources for the target CSI on overlapping subbands and non-overlapping subbands, wherein the overlapping subbands It is a subband that overlaps the subband indicated by the subband information included in the second CSI and the subband indicated by the subband information included in the first CSI. The terminal device according to claim 18, wherein the interference resource determination module is specifically configured to use the CSI measurement resource of the first CSI as the interference of the second CSI on the overlapping subband Measurement resource; and/or, on the overlapping subband, use the CSI measurement resource of the second CSI as the interference measurement resource of the first CSI. The terminal device according to any one of claims 14 to 19, wherein the first CSI and the second CSI satisfy at least one of the following conditions: If the first CSI and the second CSI are non-periodically reported CSI, the reporting of the first CSI and the second CSI is triggered by the same downlink control information DCI; There is a mapping relationship between the physical resources used to report the first CSI and the physical resources used to report the second CSI; The first CSI and the second CSI are associated with different control resource sets CORESET group indexes. The terminal device according to claim 20, wherein the mapping relationship comprises: the physical resources used for reporting the first CSI and the physical resources used for reporting the second CSI are in the same time slot. The terminal device according to claim 20, wherein the first CSI and the second CSI are associated with different control resource sets CORESET group indexes, specifically: The CSI configuration information of the first CSI and the CSI configuration information of the second CSI respectively indicate respective CORESET group indexes associated with the first CSI and the second CSI. The terminal device according to claim 22, characterized in that: When the first CSI is a non-periodically reported CSI, the CORESET group index associated with the first CSI is the same as the CORESET group index of the CORESET where the DCI that triggered the first CSI report is located; and/or When the second CSI is a non-periodically reported CSI, the CORESET group index associated with the second CSI is the same as the CORESET group index of the CORESET where the DCI that triggers the second CSI report is located. The terminal device according to claim 14, wherein the CSI measurement module is further configured to perform interference measurement of the target CSI according to the interference measurement resource, and perform the target CSI based on a result of the interference measurement CSI measurement of CSI. The terminal device according to claim 14, characterized in that: When the target CSI is the second CSI, the CSI measurement module is specifically configured to use the CSI measurement resource of the first CSI as the interference measurement resource of the second CSI, and configure the The channel measurement result of CSI is used as the interference measurement result of the second CSI; and/or, When the target CSI is the first CSI, the CSI measurement module is specifically configured to use the CSI measurement resource of the second CSI as the interference measurement resource of the first CSI, and set the second CSI The CSI channel measurement result is used as the interference measurement result of the first CSI. The terminal device according to claim 14, wherein the terminal device further comprises: a reporting module for reporting the target CSI obtained by measurement. A terminal device, the terminal device comprising: a processor and a memory, characterized in that: the memory stores an uplink control channel transmission program that can be run on the processor, and the processor executes the uplink control In the channel transmission procedure, the steps of the method for measuring channel state information CSI according to any one of claims 1 to 13 are implemented. A computer-readable storage medium, characterized in that a resource selection program is stored on the computer-readable storage medium, and when the resource selection program is executed by a processor, the method described in any one of claims 1 to 13 is realized. The steps of the channel state information CSI measurement method.

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