CN113475108A

CN113475108A - Method for measuring Channel State Information (CSI) and terminal equipment

Info

Publication number: CN113475108A
Application number: CN201980092962.5A
Authority: CN
Inventors: 陈文洪; 史志华
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-07-29
Filing date: 2019-07-29
Publication date: 2021-10-01
Anticipated expiration: 2039-07-29
Also published as: CN113475108B; WO2021016809A1

Abstract

The application relates to a method for measuring Channel State Information (CSI) and terminal equipment. The method comprises the following steps: determining an interference measurement resource of target CSI according to subband information contained in first CSI and subband information contained in second CSI, wherein the target CSI is at least one of the first CSI and the second CSI; and performing CSI measurement of the target CSI according to the interference measurement resource. The method and the terminal equipment thereof can determine the interference measurement resources of the first CSI and/or the second CSI according to the sub-band information contained in the first CSI and the second CSI, thereby taking the interference between TRPs into account during CSI measurement and improving the accuracy of CSI measurement during non-coherent joint transmission.

Description

Method for measuring Channel State Information (CSI) and terminal equipment

[ technical field ] A method for producing a semiconductor device

The present application relates to the field of communications technologies, and in particular, to a method for measuring channel state information CSI and a terminal device.

[ background of the invention ]

The NR (New Radio, New wireless) system is the most popular research and development focus in the current communication industry, and one significant difference from the existing LTE (long term evolution) is that the NR system introduces a plurality of TRP (Transmission/reception point) based downlink and uplink non-coherent transmissions.

In the prior art, a network device may configure respective corresponding CSI reports for different TRPs, for example, configure CSI report configurations of two TRPs through an RRC (Radio Resource Control) parameter, and a terminal device performs CSI report based on the two CSI report configurations, respectively. Different CSI measurement resources, such as channel measurement resources or interference measurement resources, can be adopted for CSI reporting of different TRPs, and the terminal performs CSI measurement of each TRP based on the independent CSI measurement resources.

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

[ summary of the invention ]

The application provides a method for measuring Channel State Information (CSI) and terminal equipment.

The application provides the following technical scheme:

in one aspect, a method for measuring CSI is provided, which is applicable to a terminal device, and includes: determining an interference measurement resource of target CSI according to subband information contained in first CSI and subband information contained in second CSI, wherein the target CSI is at least one of the first CSI and the second CSI;

and performing CSI measurement of the target CSI according to the interference measurement resource.

In another aspect, a terminal device is provided, which includes:

an interference resource determining module, configured to determine an interference measurement resource of a target CSI according to subband information included in a first CSI and subband information included in a second CSI, where the target CSI is at least one of the first CSI and the second CSI;

and the CSI measurement module is used for carrying out CSI measurement of the target CSI according to the interference measurement resources.

In another aspect, a terminal device is further provided, where the terminal device includes: a processor, a memory, characterized in that: the processor executes the uplink control channel transmission program to implement the method for measuring the channel state information CSI.

In another aspect, a computer-readable storage medium is provided, in which a resource selection program is stored, and when executed by a processor, the resource selection program implements the method for measuring CSI as described above.

The beneficial effect of this application lies in:

since the data transmitted by two TRPs may overlap, the interference situation when the data transmitted by TRP overlaps is completely different from the interference situation when the data transmitted by TRP does not overlap. In the technical scheme provided by the application, the terminal equipment determines whether interference exists between the two CSI according to the sub-band information contained in the first CSI and the sub-band information contained in the second CSI, and then determines the interference measurement resource of the first CSI and/or the second CSI, so that the interference between TRPs is taken into account during CSI measurement, and the accuracy of CSI measurement during non-coherent joint transmission is improved.

[ description of the drawings ]

FIGS. 1-a and 1-b illustrate a scenario in which embodiments of the present application are applied: and the plurality of TRPs adopt different control channels to independently schedule CSI feedback modes under a plurality of PDSCHs of one terminal.

Fig. 2 is another scenario applied to the embodiment of the present application: and a multi-TRP CSI feedback mode scheduled by a single PDCCH is adopted.

Fig. 3 is a flowchart of a first embodiment of a method for measuring CSI according to the present application.

Fig. 4 is a schematic diagram of interference between the first TRP and the second TRP by the terminal device when the overlapping sub-band and the non-overlapping sub-band adopt the same interference measurement resource in the first embodiment.

Fig. 5 is a schematic diagram of performing CIS measurement using different interference measurement resources for an overlapping sub-band and a non-overlapping sub-band in the first embodiment.

Fig. 6 is a block diagram of a second embodiment of a terminal device according to the present application.

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

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. This application may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete.

The specific implementation of the application discloses a method for measuring Channel State Information (CSI) and terminal equipment. The following detailed description of the present application uses a system architecture that is an NR system that introduces non-coherent transmission of downlink and uplink based on multiple transmission points TRP. The backhaul (backhaul) connection between the TRPs can be ideal or non-ideal, and information interaction between the TRPs can be rapidly and dynamically carried out under the ideal backhaul connection; under the non-ideal backhaul connection, information interaction can only be carried out quasi-statically between TRPs due to the large time delay. In Downlink non-coherent transmission, multiple TRPs may use different control channels to independently schedule multiple PDSCH (Physical Downlink Shared Channel) transmissions of one terminal, or use the same control Channel to schedule transmission of different TRPs, where data of different TRPs use different transmission layers, and the latter can only be used in the case of ideal backhaul. However, regardless of the scheduling method, the terminal device needs to report the current CSI (Channel State Information) to the network device periodically and/or aperiodically, so that the network device can know the Channel State experienced by the network device and the user equipment during data transmission.

For a plurality of TRPs, different control channels are adopted to independently schedule downlink transmission of a plurality of PDSCHs of one terminal, and the scheduled PDSCHs can be transmitted in the same time slot or different time slots. At this time, the terminal needs to support simultaneous reception of a PDCCH (Physical downlink control channel) and a PDSCH (Physical downlink control channel) from different TRPs and feedback of ACK/NACK (acknowledgement/negative acknowledgement) information and CSI. When the terminal feeds back the ACK/NACK and the CSI, the ACK/NACK and the CSI may be fed back to different TRPs (see fig. 1-a) transmitting corresponding PDSCHs, or may be combined and reported to one TRP (see fig. 1-b). The former can be applied to two scenes of ideal backhaul and non-ideal backhaul, and the latter can only be applied to the scene of ideal backhaul.

For multiple TRP Downlink transmission scheduled with a single PDCCH, the same DCI (Downlink control information) may 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) states. The network device needs to indicate DMRS ports from different CDM groups and TCI states respectively corresponding to different CDM groups in one DCI, so as to support different DMRS ports to transmit with different beams (as shown in fig. 2). In this case, hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback and CSI reporting may reuse mechanisms in existing protocols. This scheme can only be used in the ideal backhaul scenario.

The following detailed description of the present application will explain how a terminal device takes interference between TRPs into consideration when performing CSI measurement, so as to improve accuracy of CSI measurement during incoherent joint transmission.

It should be understood that the term "and/or" is used herein to describe the association relationship between the associated objects, meaning that three relationships may exist, for example: a and/or B, means that A alone, B alone, and both A and B may be present. In addition, in the present application, the character "/" indicates a relationship in which the objects related before and after are "or".

Detailed description of the invention

Please refer to fig. 3, which is a flowchart of a first embodiment of a method for measuring CSI according to the present application, and the method is applied to a terminal device. The method comprises the following steps:

step 301, determining an interference measurement resource of a target CSI according to subband information included in a first CSI and subband information included in a second CSI, where the target CSI is at least one of the first CSI and the second CSI;

step 302, according to the interference measurement resource, performing CSI measurement of the target CSI.

In one possible implementation, step 301 includes:

and when the sub-band information contained in the first CSI and the sub-band indicated by the sub-band information contained in the second CSI are overlapped, determining the interference measurement resource of the target CSI. The determining of the interference measurement resource of the target CSI specifically includes:

when the target CSI is the second CSI, taking the CSI measurement resource of the first CSI as an interference measurement resource of the second CSI; and/or the presence of a gas in the gas,

and when the target CSI is the first CSI, taking the CSI measurement resource of the second CSI as an 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 for channel measurement.

In practical application, the subband information included in the first CSI and the subband information included in the second CSI indicate M subbands selected from all configured N subbands by the terminal device. Meanwhile, the first CSI and the second CSI further include a subband CQI (Channel Quality Indicator) corresponding to the selected M subbands, and the network device may perform scheduling based on the M subbands and the subband CQI.

In practical applications, there may be overlapping portions (including partial overlapping or complete overlapping) of the subbands indicated by the subband information of the first CSI and the second CSI. The 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 included in the first CSI is subband {0,1,4,5}, and the subband indicated by the subband information included in the second CSI is subband {2,3,4,5 }. Fully overlapping means that the sub-bands of both overlap. For example, the subbands indicated by the subband information included in the first CSI and the subband information included in the second CSI are both subbands {0,1,4,5 }.

In this embodiment, the terminal device may determine whether the first CSI and/or the second CSI have interference according to whether subbands indicated by subband information included in the first CSI and the second CSI respectively overlap. When interference does exist, determining interference measurement resources of the first CSI and/or the second CSI. For example:

and confirming that the interference exists when the sub-band information contained in the first CSI and the sub-band indicated by the sub-band information contained in the second CSI are overlapped.

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

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

In the first embodiment provided by the present application, when there are two TRPs, that is, a first TRP and a second TRP, whether there is interference between the two TRPs may be determined according to whether there is an overlap between subbands indicated by a first CSI corresponding to the first TRP and a second CSI corresponding to the second TRP. When there is an overlapping situation, it is confirmed that there is interference between two TRPs. At this time, the terminal device may use the signals of the first TRP and the second TRP as interference measurement resources of each other, thereby estimating interference when the resources conflict, and obtaining more accurate CSI measurement.

With continued reference to fig. 4, for the CSI measurement, the CSI measurement resources of the first CSI and the second CSI are interference measurement resources of each other. That is, when the sub-bands 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 CSI measurement resource of the first CSI.

Continuing with FIG. 5, in one possible approach, step 301 includes:

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

In this application, a subband indicated by subband information included in the second CSI and a subband overlapped with the subband indicated by subband information included in the first CSI are referred to as an overlapped subband. And other subbands except overlapping subbands in the subbands indicated by the subband information contained in the first CSI and the second CSI are called non-overlapping subbands.

Optionally, the scheme includes: when the target CSI is a second CSI, taking the CSI measurement resource of the first CSI as an interference measurement resource of the second CSI on the overlapped sub-band; and/or the presence of a gas in the gas,

and when the target CSI is the first CSI, taking the CSI measurement resource of the second CSI as the interference measurement resource of the first CSI on the overlapped sub-band.

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 resource adopted by the overlapped subband is different from the interference measurement resource adopted by the non-overlapped subband. At this time, on overlapping subbands, the interference measurement resource for the second CSI includes a CSI measurement resource for 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 the overlapped subband and the non-overlapped subband may be different, and at this time, on the overlapped subband, the interference measurement resource of the first CSI includes the CSI measurement resource of the second CSI.

For example, if the subband indicated by the subband information included in the first CSI is subband {0,1,8,9}, and the subband indicated by the subband information included 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}, the overlapping subband is subband {8,9}, and different interference measurement resources are adopted on the non-overlapping subband {0,1} and the overlapping subband {8,9 }; for the second CSI, different interference measurement resources are employed on the non-overlapping subbands {2,3} and the overlapping subbands {8,9 }. Taking the second CSI as an example, on the overlapped subband {8,9}, the terminal takes the CSI measurement resource of the first CSI as the interference measurement resource of the second CSI; on the non-overlapping sub-band {2,3}, the terminal does not use the CSI measurement resource of the first CSI as the interference measurement resource of the second CSI, and only uses the interference measurement resource configured by the network 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 included in the first CSI, the interference resource used by the overlapping subband includes a measurement resource (first non-zero power CSI-RS) of the first CSI and an interference measurement resource (second IMR) configured by the network as the second CSI, and the interference resource used by the non-overlapping subband includes only the second IMR.

In this embodiment, when measuring interference corresponding to the second CSI, the terminal device obtains different interference on the non-overlapping subband {2,3} where resource collision does not occur and the overlapping subband {8,9} where resource collision may occur, so that SINR can be accurately estimated on each subband to obtain a more reliable CQI, and on the overlapping subband, that is, the terminal device uses the CSI measurement resource of the first CSI as the interference measurement resource of the second CSI.

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

condition one

If the first CSI and the second CSI are the CSI reported aperiodically, the reporting of the first CSI and the second CSI is triggered by the same Downlink Control Information (DCI);

condition two

The physical resource used for reporting the first CSI and the physical resource used for reporting the second CSI have a mapping relation;

condition three

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

The above conditions are further explained in detail below:

for the condition one, if the first CSI and the second CSI are aperiodic reported CSI, the reporting of the first CSI and the second CSI is triggered by the same DCI. The method is mainly used in the case of ideal backhaul, and at the moment, the CSI report corresponding to two TRPs can be triggered through the same DCI, so that the cost of triggering signaling is saved.

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

The mapping relationship may be predetermined in advance by the terminal device and the network device, for example, 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 are PUSCHs or PUCCHs in the same time slot; or the first CSI and the second CSI are reported in the same or adjacent time slots; or the deviation between the time domain resource used for reporting the first CSI and the time domain resource used for reporting the second CSI does not exceed a preset value.

Based on the mapping relationship, the terminal may determine whether the first CSI and the second CSI have the association relationship defined in the present application, so that it is necessary to apply the measurement method provided in the first embodiment to determine whether interference exists between TRPs corresponding to the first CSI and the second CSI, and when the interference exists, the measurement method is used to perform more accurate measurement on the target CSI.

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

In practical applications, DCI for scheduling PDSCH transmitted by different TRPs may be carried by different CORESET, that is, a plurality of CORESETs are configured on the network side, and each TRP is scheduled by using its own CORESET, that is, different TRPs may be distinguished by CORESET. For example, the network device may configure one CORESET index for each CORESET, with different indices corresponding to different TRPs. When the terminal feeds back the CSI, the CSI corresponding to each TRP needs to be fed back respectively. The CSI includes RI, PMI, CQI, and other contents, and may be used for scheduling downlink transmission of each TRP.

Specifically, the configuration may indicate a core set index associated with the CSI through CSI reporting. For example, in the CSI reporting configuration corresponding to the first CSI indicated by the RRC parameter CSI-Report-config, a parameter of a CORESET Group Index (CORESET _ Group _ Index) may be included to indicate a CORESET Group Index associated with the first CSI.

Further, if the first CSI is a CSI reported aperiodically, a CORESET group index associated with the first CSI is the same as a CORESET group index of a CORESET where the DCI triggering the reporting of the first CSI is located. For example, the CORESET group index associated with the first CSI is a CORESET group index of a CORESET where DCI triggering the first CSI to report is located, or a value of the CORESET group index associated with the first CSI is the same as a value of the CORESET group index of the CORESET where DCI triggering the first CSI to report is located.

Similarly, when the second CSI is a CSI reported aperiodically, the CORESET group index associated with the second CSI is the same as the CORESET group index of the CORESET where the DCI triggering the second CSI to report is located.

Since different CORESET group indexes may correspond to different TRPs, the third condition may support that the first CSI and the second CSI are respectively used for downlink transmission of two TRPs.

In one possible implementation, step 302 includes:

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

and performing CSI measurement of the target CSI based on the interference measurement result.

Taking the target CSI as the first CSI as an example, when the terminal device performs interference measurement, the terminal device may perform measurement based on the interference measurement resource (e.g., the measurement resource of the second CSI) determined in step 301 to obtain a first interference measurement result, may also perform measurement according to other interference measurement resources configured by the network device to obtain a second interference measurement result, and calculates the first CSI 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, thereby obtaining the CQI in the first CSI.

In one possible implementation, step 302 includes:

when the target CSI is the second CSI, taking the channel measurement result of the first CSI as an interference measurement resource of the second CSI, and at this time, directly performing the second CSI measurement according to the channel measurement result of the first CSI; alternatively, the first and second electrodes may be,

when the target CSI is the first CSI, the channel measurement result of the second CSI is used as an interference measurement resource of the first CSI, and at this time, the first CSI measurement may be directly performed according to the channel measurement result of the second CSI.

In this scheme, 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, it is not necessary to perform interference measurement based on the interference measurement resource, and the second CSI measurement is performed after the interference measurement result is obtained, but the channel measurement result corresponding to the first CSI can be directly used as the interference measurement result of the second CSI to perform the second CSI measurement, 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), so as to perform SINR estimation, thereby obtaining the CQI of the second CSI.

In this scheme, the terminal device may also use the channel measurement result of the first CSI in combination with other interference measurement results as the interference measurement result of the second CSI, and calculate the second CSI according to the interference measurement structure. Here, the other interference measurement result is an interference measurement result obtained by performing interference measurement on other interference measurement resources configured by the network device. Conversely, the channel measurement result of the second CSI may be combined with other interference measurement results to measure the first CSI.

In one possible implementation, after step 302, the method further includes:

and the terminal equipment reports the measured target CSI to the network side equipment.

According to the method for measuring the CSI, interference measurement resources of the first CSI and/or the second CSI can be determined according to subband information contained in the first CSI and the second CSI, so that interference between TRPs is taken into consideration during CSI measurement, and the accuracy of CSI measurement during non-coherent joint transmission is improved.

The resource selection method provided by the above embodiment is applicable to any NR system.

Detailed description of the invention

Please refer to fig. 6, which is a block diagram of an embodiment of a terminal device according to the present application. Please refer to the first embodiment for details which are not described in the second embodiment, and they are not repeated herein. The terminal device includes:

an interference resource determining module 601, configured to determine, according to subband information included in first CSI and subband information included in second CSI, an interference measurement resource of target CSI, where the target CSI is at least one of the first CSI and the second CSI;

a CSI measurement module 602, configured to perform CSI measurement on the target CSI according to the interference measurement resource.

In a possible implementation, the interference resource determining module is further configured to determine the interference measurement resource of the target CSI according to the overlapping of the subbands indicated by the subband information included in the first CSI and the subband information included in the second CSI.

When the subbands indicated by the subband information included in the first CSI and the second CSI overlap, in a feasible scheme, the interference resource determining module is specifically configured to use, when the target CSI is the second CSI, 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, taking the CSI measurement resource of the second CSI as an interference measurement resource of the first CSI.

In an optional aspect, the CSI measurement resources comprise non-zero power channel state information reference signal, CSI-RS, resources for channel measurement.

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

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

In a second embodiment, please refer to the description in the first embodiment for the condition that the first CSI and the second CSI need to satisfy, which is not repeated herein.

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

In an optional aspect, the CSI measurement module 602 is specifically configured to, when the CSI measurement resource of the first CSI is used as the interference measurement resource of the second CSI, use the channel measurement result of the first CSI as the interference measurement result of the second CSI, and calculate the second CSI according to the interference measurement result; or

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

In an optional scheme, the CSI measurement module 602 is specifically configured to use the channel measurement result of the first CSI as an interference measurement resource of the second CSI, and directly perform the second CSI measurement according to the channel measurement result of the first CSI; alternatively, the first and second electrodes may be,

the CSI measurement module 602 is specifically configured to use the channel measurement result of the second CSI as an 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:

and the sending module is used for reporting the measured target CSI to the network side equipment.

Detailed description of the invention

Please refer to fig. 7, a schematic structural diagram of a terminal device according to a 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 components of the terminal device are connected with each other through a bus system in a communication manner.

The user interface 730 may be a hardware device where a display or pointing device (touch sensitive pad or touch screen, etc.) may interact with the user. The memory 720 stores an operating system and an application program.

After receiving the first message sent by the network device through the network structure 740, the processor 710 reads the operating system and/or the application program stored in the memory 720, executes the steps in the first embodiment, determines whether interference exists between two TRPs, and when interference exists, accurately measures the target CSI.

The processor 710 may also be a single component or may be a collection of processing elements. For example, it may be a CPU, an ASIC, or one or more integrated circuits configured to implement the above method, such as at least one microprocessor DSP, or at least one programmable gate array FPGA, or the like.

Detailed description of the invention

A fourth specific implementation manner of the present application provides a computer-readable storage medium, where a resource selection program is stored on the computer-readable storage medium, and when the resource selection program is executed by a processor, the step of implementing the method for measuring CSI in the first specific implementation manner is implemented.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks. The program may be stored in a computer-readable storage medium, which may include: read Only Memory (ROM), Random Access Memory (RAM), magnetic or optical disks, and the like.

The above detailed description illustrates, but does not limit, the application, and those skilled in the art will be able to design many alternative embodiments within the scope of the appended claims. Those skilled in the art will recognize that appropriate adjustments, modifications, etc. can be made to the specific implementations without departing from the scope of the present application as defined by the appended claims. Accordingly, it is contemplated that any modifications and variations made thereto, which come within the spirit and scope of the application, are desired to be protected by the following claims.

Claims

A method for measuring Channel State Information (CSI) is suitable for terminal equipment, and is characterized in that the method comprises the following steps:

determining an interference measurement resource of target CSI according to subband information contained in first CSI and subband information contained in second CSI, wherein the target CSI is at least one of the first CSI and the second CSI;

and performing CSI measurement of the target CSI according to the interference measurement resource.
The method of 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:

and when the sub-band information contained in the first CSI and the sub-band indicated by the sub-band information contained in the second CSI are overlapped, determining the interference measurement resource of the target CSI.
The method of claim 2, wherein: the determining of the interference measurement resource of the target CSI comprises:

when the target CSI is the second CSI, taking the CSI measurement resource of the first CSI as an interference measurement resource of the second CSI; and/or the presence of a gas in the gas,

and when the target CSI is the first CSI, taking the CSI measurement resource of the second CSI as an interference measurement resource of the first CSI.
The method of claim 3, wherein:

the CSI measurement resources comprise non-zero power channel state information reference signal (CSI-RS) resources for channel measurement.
The method of claim 1, wherein the determining 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 comprises:

determining different interference measurement resources for target CSI on overlapping subbands and non-overlapping subbands, wherein the overlapping subbands are subbands in which a subband indicated by subband information included in the second CSI and a subband indicated by subband information included in the first CSI overlap.
The method of claim 5, wherein the step of determining different interference measurement resources for target CSI on overlapping subbands comprises:

on the overlapped sub-band, taking the CSI measurement resource of the first CSI as the interference measurement resource of the second CSI; and/or

And on the overlapped sub-bands, taking the CSI measurement resource of the second CSI as the interference measurement resource of the first CSI.
The method according to any 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 the CSI reported aperiodically, the reporting of the first CSI and the second CSI is triggered by the same Downlink Control Information (DCI);

a mapping relation exists between the physical resource used for reporting the first CSI and the physical resource used for reporting the second CSI;

the first CSI and the second CSI are associated with different control resource set (CORESET) group indexes.
The method of claim 7, wherein the mapping comprises: and the physical resource used for reporting the first CSI and the physical resource used for reporting the second CSI are in the same time slot.
The method of claim 7, wherein the first CSI and the second CSI are associated with different control resource set, CORESET, group indices, specifically:

the CSI configuration information of the first CSI and the CSI configuration information of the second CSI respectively indicate CORESET group indexes associated with the first CSI and the second CSI respectively.
The method of claim 9, wherein:

when the first CSI is the CSI reported aperiodically, the CORESET group index associated with the first CSI is the same as the CORESET group index of the CORESET where the DCI triggering the reporting of the first CSI is located; and/or the presence of a gas in the gas,

and when the second CSI is the CSI reported aperiodically, the CORESET group index associated with the second CSI is the same as the CORESET group index of the CORESET where the DCI triggering the second CSI to report is located.
The method of claim 1, wherein the performing the CSI measurement of the target CSI based on the interference measurement resource comprises:

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

and performing CSI measurement of the target CSI based on the interference measurement result.
The method of claim 1, wherein the performing the CSI measurement of the target CSI based on the interference measurement resource comprises:

when the target CSI is the second CSI, taking the CSI measurement resource of the first CSI as an interference measurement resource of the second CSI, and taking a channel measurement result of the first CSI as an interference measurement result of the second CSI; or

And when the target CSI is the first CSI, taking the CSI measurement resource of the second CSI as an interference measurement resource of the first CSI, and taking a channel measurement result of the second CSI as an interference measurement result of the first CSI.
The method of claim 1, further comprising:

and reporting the measured target CSI.
A terminal device, characterized in that the terminal device comprises:

an interference resource determining module, configured to determine, according to subband information CSI included in the first CSI and subband information included in the second CSI, an interference measurement resource of a target CSI, where the target CSI is at least one of the first CSI and the second CSI;

and the CSI measurement module is used for carrying out CSI measurement of the target CSI according to the interference measurement resources.
The terminal device of claim 14, wherein the interference resource determining module is further configured to determine the interference measurement resource of the target CSI when the subbands indicated by the subband information included in the first CSI and the subband information included in the second CSI overlap.
The terminal device of 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 interference measurement resource of the second CSI; and/or the presence of a gas in the gas,

when the target CSI is the first CSI, the interference resource determining 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 of claim 16, wherein:

the CSI measurement resources comprise non-zero power channel state information reference signal (CSI-RS) resources for channel measurement.
The terminal device of 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 are subbands in which a subband indicated by subband information included in the second CSI and a subband indicated by subband information included in the first CSI overlap.
The terminal device of claim 18, wherein the interference resource determining module is configured to use the CSI measurement resource of the first CSI as the interference measurement resource of the second CSI on the overlapping subbands; and/or, on the overlapping sub-band, using the CSI measurement resource of the second CSI as the interference measurement resource of the first CSI.
The terminal device according to any 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 the CSI reported aperiodically, the reporting of the first CSI and the second CSI is triggered by the same Downlink Control Information (DCI);

a mapping relation exists between the physical resource used for reporting the first CSI and the physical resource used for reporting the second CSI;

the first CSI and the second CSI are associated with different control resource set (CORESET) group indexes.
The terminal device of claim 20, wherein the mapping relationship comprises: and the physical resource used for reporting the first CSI and the physical resource used for reporting the second CSI are in the same time slot.
The terminal device of claim 20, wherein the first CSI and the second CSI are associated with different control resource set, CORESET, group indices, specifically:

the CSI configuration information of the first CSI and the CSI configuration information of the second CSI respectively indicate CORESET group indexes associated with the first CSI and the second CSI respectively.
The terminal device of claim 22, wherein:

when the first CSI is the CSI reported aperiodically, the CORESET group index associated with the first CSI is the same as the CORESET group index of the CORESET where the DCI triggering the reporting of the first CSI is located; and/or

And when the second CSI is the CSI reported aperiodically, the CORESET group index associated with the second CSI is the same as the CORESET group index of the CORESET where the DCI triggering the second CSI to report is located.
The terminal device of claim 14, wherein the CSI measurement module is further configured to perform interference measurement on the target CSI according to the interference measurement resource, and perform CSI measurement on the target CSI based on a result of the interference measurement.
The terminal device of claim 14, wherein:

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 use the channel measurement result of the first CSI as the interference measurement result of the second CSI; and/or the presence of a gas in the gas,

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 use the channel measurement result of the second CSI as the interference measurement result of the first CSI.
The terminal device according to claim 14, wherein the terminal device further comprises: and the reporting module is used for reporting the measured target CSI.
A terminal device, the terminal device comprising: a processor, a memory, characterized in that: an uplink control channel transmission program stored in the memory and operable on the processor, wherein the processor implements the steps of the method for measuring channel state information CSI as claimed in any one of claims 1 to 13 when executing the uplink control channel transmission program.
A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a resource selection program, which when executed by a processor implements the steps of the method for measuring channel state information CSI as claimed in any one of claims 1 to 13.