CN109803289B

CN109803289B - CSI reporting method and terminal equipment

Info

Publication number: CN109803289B
Application number: CN201711149115.7A
Authority: CN
Inventors: 刘显达; 刘鹍鹏; 李雪茹
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-11-17
Filing date: 2017-11-17
Publication date: 2021-01-05
Anticipated expiration: 2037-11-17
Also published as: CN109803289A; WO2019096266A1

Abstract

A CSI reporting method and a terminal device are provided, the method comprises: the method comprises the steps that terminal equipment receives M Channel State Information (CSI) reporting configurations issued by a base station, configuration of a first CSI-RS resource associated with each CSI reporting configuration and a first signaling; for any one CSI reporting configuration associated first CSI-RS resource, the terminal equipment determines a second CSI-RS resource corresponding to the CSI reporting configuration according to the first signaling; the terminal equipment determines the priority sequence of the M CSI reporting configurations according to the first CSI-RS resource and the second CSI-RS resource corresponding to each CSI reporting configuration; the terminal equipment sends a CSI report to a base station according to the priority order; the method is used for solving the problem that the CSI reported by the terminal equipment is incomplete at present, the downlink resource scheduling of the UE by the base station is limited, and the utilization rate of the downlink resource is reduced.

Description

CSI reporting method and terminal equipment

Technical Field

The present application relates to the field of information technology, and in particular, to a CSI reporting method and a terminal device.

Background

Radio channel conditions are typically changing, e.g., a UE moves from an area with good channel conditions to an area with poor channel conditions; or the UE moves on the streets with tall buildings on both sides, the on-street signal along the direction of signal propagation will increase, while the on-street signal perpendicular to the direction of propagation will decrease. In order to better adapt to the variation of the radio channel, the base station sends channel state information reference signals (CSI-RS) to the UE, and each CSI-RS is carried on a specific time-frequency resource, i.e., CSI-RS resource. The UE may report the Channel State to the base station through Channel State Information (CSI), so that the base station determines a downlink resource allocation scheme of each UE in the cell through its own scheduling algorithm.

The CSI report is Channel state information reported by the UE to the base station, and is composed of a Channel Quality Indicator (CQI), a Transmission Precoding Matrix Indicator (TPMI), and a Transmission Rank Indicator (TRI), where a time-frequency resource occupied by the UE to send the CSI report to the base station is a CSI resource (CSI resource) controlled by the base station.

Because the time-frequency resource occupied by the CSI-RS resource configured for the UE by the base station through the high-level signaling may overlap with the time-frequency resource occupied by the Physical Downlink Control Channel (PDCCH) configured for the UE or the time-frequency resource occupied by the Synchronization Signal block (SS-block) configured by the cell common signaling, the CSI-RS cannot be normally transmitted when being transmitted at the overlapped time-frequency resource position, and generally, the CSI-RS of the overlapped time-frequency resource is punctured.

In addition, because CSI resources may be insufficient, currently, the UE may no longer report the CSI report corresponding to the CSI reporting configuration with the low priority according to the size of the CSI resource and the existing priority rule, but the CSI report corresponding to part of the reported CSI reporting configurations with the high priority may be incomplete due to the problem of puncturing, and due to the fact that the CSI report corresponding to the CSI reporting configuration with the high priority obtained by the base station is incomplete, the base station may limit the scheduling of the downlink resource of the UE through the incomplete CSI reports, thereby reducing the utilization rate of the downlink resource.

Disclosure of Invention

In view of this, the present application provides a CSI reporting method and a terminal device, so as to solve the problem that a CSI report reported by a terminal device is incomplete at present, and downlink resource scheduling of the UE by a base station is limited, thereby reducing the utilization rate of downlink resources.

In a first aspect, an embodiment of the present application provides a CSI reporting method, where the method includes: the terminal equipment receives configuration information of M first CSI-RS resources, and then the terminal equipment determines M second CSI-RS resources according to the first resources and the M first CSI-RS resources, because each second CSI-RS resource in the M second CSI-RS resources corresponds to each first CSI-RS resource in the M first CSI-RS resources, each second CSI-RS resource in the M second CSI-RS resources is different from each other, and the M second CSI-SR resources are time-frequency resources of CSI-RSs which are overlapped with the first resources in the M first CSI-RS resources; therefore, the terminal device may determine the priority order of the N CSI associated with the M first CSI-RS resources according to the M first CSI-RS resources and the M second CSI-RS resources, and then report the CSI to the base station according to the priority order.

In this way, in the embodiment of the present application, the UE determines the priority of the CSI report corresponding to the CSI reporting configuration based on the CSI reporting configuration identifier configured by the base station for the UE, and also determines the priority of the CSI report corresponding to the CSI reporting configuration based on the condition that the first CSI-RS resource associated with the CSI reporting configuration is overlapped, so that the CSI report reported by the terminal device is more beneficial to the base station to schedule downlink resources, and the utilization rate of the downlink resources is improved.

There are various ways to determine the priority order, and in general, the priority order of the CSI associated with any second CSI-RS resource among the M second CSI-RS resources is lower than the priority of the CSI not associated with the M second CSI-RS resources.

Specifically, in a first possible design, the priority order of the first carrier is lower than the priority order of the second carrier; the first carrier contains any time-frequency resource in the M second CSI-RS resources, and the second carrier does not contain any time-frequency resource in the M second CSI-RS resources.

In a second possible design, the priority order of the first CSI reports is lower than the priority order of the second CSI reports; the reporting bandwidth of the first CSI report includes any time-frequency resource in the M second CSI-RS resources, and the CSI reporting bandwidth of the second CSI report does not include the priority order of CSI report of any time-frequency resource in the M second CSI-RS resources.

In a third possible design, the priority order of the CSI associated with the first set of subbands is lower than the priority order of the CSI associated with the second set of subbands; the first subband set comprises any time-frequency resource in the M second CSI-RS resources, and the second subband set does not comprise any time-frequency resource in the M second CSI-RS resources;

the first subband set is all even subbands or all odd subbands in a CSI reporting bandwidth, and the second subband set is all even subbands or all odd subbands in the CSI reporting bandwidth.

In a fourth possible design, the priority order of the third carrier is lower than the priority order of the fourth carrier; the reporting bandwidth corresponding to the third carrier includes Q REs in the M second CSI-RS resources, the reporting bandwidth corresponding to the fourth carrier includes W REs in the M second CSI-RS resources, and Q is greater than W, Q, W is a positive integer; alternatively, the first and second electrodes may be,

the reporting bandwidth corresponding to the third carrier includes E sub-bands, the E sub-bands overlap with any time-frequency resource in the M second CSI-RS resources, the reporting bandwidth corresponding to the fourth carrier includes R sub-bands, the R sub-bands overlap with any time-frequency resource in the M second CSI-RS resources, and E is greater than R, E, R is a positive integer;

the reporting bandwidth corresponding to the third carrier includes Q REs in the M second CSI-RS resources, the fourth carrier includes W REs in the M second CSI-RS resources, Q is greater than W, and Q, W is a positive integer; alternatively, the first and second electrodes may be,

the first ratio is greater than a second ratio, wherein the first ratio is a ratio of Resource Elements (REs) occupied by the third carrier containing the second CSI-RS resource to Resource Elements (REs) occupied by the third carrier not containing the second CSI-RS resource, and the second ratio is a ratio of Resource Elements (REs) occupied by the fourth carrier containing the second CSI-RS resource to Resource Elements (REs) occupied by the fourth carrier not containing the second CSI-RS resource.

In a fifth possible design, the priority order of the third CSI reports is lower than the priority order of the fourth CSI reports;

a reporting bandwidth corresponding to the third CSI report includes Q REs in the M second CSI-RS resources, a reporting bandwidth corresponding to the fourth CSI report includes W REs in the M second CSI-RS resources, Q is greater than W, and Q, W is a positive integer; alternatively, the first and second electrodes may be,

the reporting bandwidth corresponding to the third CSI report comprises E subbands, the E subbands overlap with any time-frequency resource in the M second CSI-RS resources, the reporting bandwidth corresponding to the fourth CSI report comprises R subbands, the R subbands overlap with any time-frequency resource in the M second CSI-RS resources, and E is greater than R, E, R is a positive integer;

a reporting bandwidth corresponding to the third CSI report includes Q REs in the M second CSI-RS resources, the fourth CSI report includes W REs in the M second CSI-RS resources, Q is greater than W, and Q, W is a positive integer; alternatively, the first and second electrodes may be,

the third ratio is greater than a fourth ratio, where the first ratio is a ratio of Resource Elements (REs) occupied by the second CSI-RS resource in the third CSI report to Resource Elements (REs) not occupied by the second CSI-RS resource in the third CSI report, and the second ratio is a ratio of Resource Elements (REs) occupied by the second CSI-RS resource in the fourth CSI report to Resource Elements (REs) not occupied by the second CSI-RS resource in the third CSI report.

In a sixth possible design, the terminal device replaces the CSI of the subband corresponding to the subband overlapping any time-frequency resource in the third CSI-RS resource in the even subband set with the CSI of the subband corresponding to the subband not overlapping any time-frequency resource in the fourth CSI-RS resource in the odd subband set;

or the terminal device replaces the CSI of the sub-band associated with the sub-band in the odd sub-band set which is overlapped with any time-frequency resource in the fourth CSI-RS resource with the CSI of the sub-band in the even sub-band set which is not overlapped with any time-frequency resource in the third CSI-RS resource.

Further, after determining the priority order of the N CSI associated with the M first CSI-RSs, the method further includes:

the terminal equipment determines a third CSI-RS resource and a fourth CSI-RS resource according to the first CSI-RS resource and the second CSI-RS resource, wherein the third CSI-RS resource is a time-frequency resource of a CSI-RS overlapping the first resource in an even subband set in the reporting bandwidth of the CSI, and the fourth CSI-RS resource is a time-frequency resource of a CSI-RS overlapping the first resource in an odd subband set in the reporting bandwidth of the CSI;

the terminal equipment determines a fifth ratio of Resource Elements (RE) occupied by the third CSI-RS resource to Resource Elements (RE) occupied by the fourth CSI-RS resource;

and the terminal equipment determines the priority order of the CSI according to the fifth ratio.

In addition, in one possible design, after determining the priority order of the N CSIs associated with the M first CSI-RSs, the method further includes:

the terminal equipment determines that Y sub-bands exist in X sub-bands contained in the CSI reporting bandwidth, and the Y sub-bands are overlapped with any time-frequency resource in the time-frequency resources occupied by the second CSI-RS resource; x is greater than or equal to Y, and X and Y are positive integers;

the terminal equipment determines a sixth ratio of the X to the Y;

and the terminal equipment determines the priority order of the CSI according to the sixth ratio.

One possible method for the terminal device to send the CSI report to the base station is:

the terminal equipment divides the CSI reporting bandwidth into Z sub-bands, and the Z sub-bands are not overlapped with any time-frequency resource in the time-frequency resources occupied by the second CSI-RS resource; z is greater than or equal to X and is a positive integer;

and the terminal equipment reports the CSI according to the Z.

Another possible method for the terminal device to send the CSI report to the base station is: the information bit of the CSI reported by the terminal device and associated with the Y subbands is a preset value or CSI associated with the CSI reporting bandwidth, or,

and the information bits of the CSI reported by the terminal equipment and associated with the M subbands are preset values or CSI associated with the CSI reporting bandwidth.

In a second aspect, an embodiment of the present application provides a CSI reporting method, where the method includes:

the terminal equipment receives M channel state information CSI reporting configurations issued by a base station, configuration of a first channel state information reference signal CSI-RS resource associated with each CSI reporting configuration, and a first signaling.

Because the first signaling is used for indicating a time-frequency resource which does not bear a CSI-RS in the first CSI-RS resource, M is a positive integer greater than or equal to 1; therefore, for any one CSI reporting configuration associated first CSI-RS resource, the terminal device determines a second CSI-RS resource corresponding to the CSI reporting configuration according to the first signaling, wherein the second CSI-RS resource is a time-frequency resource which does not carry a CSI-RS in the CSI reporting configuration associated first CSI-RS resource;

the terminal equipment determines the priority sequence of the M CSI reporting configurations according to the first CSI-RS resource and the second CSI-RS resource corresponding to each CSI reporting configuration, and then the terminal equipment sends a CSI report to a base station according to the priority sequence; the CSI report is generated by the terminal equipment according to each CSI reporting configuration and the configuration information of the first CSI-RS resource associated with each CSI reporting configuration.

In a first possible design, for any one CSI reporting configuration, the terminal device determines a first ratio of Resource Elements (REs) occupied by a second CSI-RS resource to Resource Elements (REs) occupied by a first CSI-RS resource, where the second CSI-RS resource corresponds to the CSI reporting configuration;

and the terminal equipment determines the priority sequence of the M CSI reporting configurations according to the M first ratios of the M CSI reporting configurations and the identifiers of the M CSI reporting configurations.

In a second possible design, for any CSI reporting configuration, the terminal device determines, according to a second CSI-RS resource corresponding to the CSI reporting configuration, a third CSI-RS resource and a fourth CSI-RS resource corresponding to the CSI reporting configuration, where the third CSI-RS resource is a time-frequency resource that does not carry a CSI-RS in an even subband set in a CSI reporting bandwidth corresponding to the CSI reporting configuration, and the fourth CSI-RS resource is a time-frequency resource that does not carry a CSI-RS in an odd subband set in the CSI reporting bandwidth corresponding to the CSI reporting configuration;

the terminal equipment determines a second ratio of Resource Elements (RE) occupied by the third CSI-RS resource to Resource Elements (RE) occupied by the fourth CSI-RS resource; and the terminal equipment determines the priority sequence of the M CSI reporting configurations according to the second ratio.

In a third possible design, for any CSI reporting configuration, the terminal device determines that any RE of Resource Elements (REs) occupied by the second CSI-RS resource exists in Y subbands in X subbands in a reporting bandwidth corresponding to the CSI reporting configuration; x is greater than or equal to Y, and X and Y are positive integers;

the terminal equipment determines a third ratio of the X to the Y;

and the terminal equipment determines the priority sequence of the M CSI reporting configurations according to the M third ratios corresponding to the M CSI reporting configurations and the identifiers of the M CSI reporting configurations.

Since the CSI reporting bandwidth corresponding to the CSI reporting configuration may be divided into a plurality of subbands, the terminal device may further replace, in the even-numbered subband set, the subband CSI corresponding to any time-frequency resource included in the third CSI-RS resource with the subband CSI corresponding to any time-frequency resource not included in the fourth CSI-RS resource in the odd-numbered subband set; and the terminal equipment generates a CSI report according to the priority order and the CSI of the sub-bands corresponding to the replaced even sub-band set.

In a possible design, the terminal device determines L CSI reporting configurations with priorities meeting set conditions according to the priority order, wherein L is smaller than equal M;

the terminal equipment determines an effective value of each sub-band in a CSI reporting bandwidth corresponding to the CSI reporting configuration aiming at the CSI reporting configuration of any one of the L, wherein the effective value is the number of RBs for bearing CSI-RS in one sub-band and the total number of RBs of the one sub-band; and if the effective value of the sub-band is larger than a set threshold, the terminal equipment reports the sub-band CSI of the sub-band, and if the effective value of the sub-band is not larger than the set threshold, the terminal equipment does not report the sub-band CSI of the sub-band.

In a third aspect, an embodiment of the present application further provides a CSI reporting apparatus, where the CSI reporting apparatus has a function of implementing CSI reporting in the method example in the first aspect. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or the software includes one or more modules corresponding to the above-described functions.

In a possible design, the structure of the CSI reporting apparatus may include a receiving unit, a determining unit, and a sending unit, which may execute corresponding functions in a method example provided by any design of the first aspect, for which specific reference is made to detailed description in the method example, and details are not repeated here.

In a fourth aspect, an embodiment of the present application further provides a terminal device, where the terminal device has a function of implementing the CSI reporting behavior in the example of the method in the first aspect. The functions may be implemented by hardware. The first node comprises a communication interface, a processor, a bus and a memory, wherein the processor and the memory are connected through the bus; the processor calls the instructions stored in the memory to execute the above method.

In a fifth aspect, this embodiment of the present application further provides a computer storage medium, where a software program is stored, and the software program can implement the method provided by the first aspect or any one of the designs of the first aspect when being read and executed by one or more processors.

In a sixth aspect, the present application further provides a computer program product containing instructions, which when run on a computer, causes the computer to execute the packet sending method according to the above aspects or various possible implementations.

Compared with the conventional method, the CSI reporting method provided by the embodiment of the present application is because the priorities of all CSI reporting configurations reported in a timeslot in the prior art are predefined. If the ID corresponding to a certain CSI reporting configuration is small, the CSI reporting configuration will report preferentially and CSI reporting information corresponding to the other CSI reporting configurations will not report any more due to a low priority, then the CSI information corresponding to some CSI reporting configurations obtained by the base station will be incomplete, and compared with the complete CSI information corresponding to the other CSI reporting configurations, the PDSCH scheduling of the UE by the incomplete CSI information base station will be limited, but the embodiment of the present application determines that the priority of the CSI report corresponding to the CSI reporting configuration mainly depends on two principles, one principle: determining the priority order of the CSI reports corresponding to the CSI reporting configuration according to the sequence from small to large of the CSI reporting configuration identifier corresponding to each CSI reporting configuration, namely, the smaller the CSI reporting configuration identifier is, the higher the priority of the CSI report corresponding to the CSI reporting configuration is; principle two: the smaller the number of time-frequency resources which do not bear the CSI-RS and correspond to the CSI reporting configuration is, the higher the priority of the CSI report corresponding to the CSI reporting configuration is. In other words, in the embodiment of the present application, the UE determines, based on the CSI reporting configuration identifier configured by the base station for the UE, the priority of the CSI report corresponding to the CSI reporting configuration, and also determines, based on the degree of puncturing the first CSI-RS resource associated with the CSI reporting configuration, the priority of the CSI report corresponding to the CSI reporting configuration, so that the CSI report acquired by the base station is relatively complete, and it is convenient for scheduling downlink resources subsequently.

Drawings

Fig. 1 is a schematic diagram of a CSI reporting scenario provided in an embodiment of the present application;

fig. 2 is a schematic diagram of priority rules for CSI reporting provided in the prior art;

fig. 3 is a schematic diagram of priority comparison of CSI reporting according to an embodiment of the present application;

fig. 4 is a schematic diagram of CSI reporting according to an embodiment of the present application;

FIG. 5 is a diagram illustrating puncturing of sub-bands according to an embodiment of the present application;

fig. 6 is a schematic view of a priority of CSI reporting configuration according to an embodiment of the present application;

fig. 7 is a schematic diagram of sub-band CSI combining according to an embodiment of the present application;

fig. 8 is a schematic diagram of adjusting a sub-band CSI threshold according to an embodiment of the present application;

fig. 9 is a schematic diagram of a CSI reporting apparatus according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Detailed Description

The present application will be described in further detail below with reference to the accompanying drawings.

Various aspects are described herein in connection with a terminal and/or a base station. Terminals, devices (devices) that provide voice and/or data connectivity to a user, including wireless terminals or wired terminals. The wireless terminal may be a handheld device having wireless connection capabilities, or other processing device connected to a wireless modem, a mobile terminal communicating with one or more core networks via a radio access network. For example, wireless terminals may be mobile telephones (or "cellular" telephones) and computers with mobile terminals. As another example, a wireless terminal may be a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device. For another example, the wireless terminal may be a mobile station (mobile station), an access point (access point), or a part of a User Equipment (UE), and for convenience of description, the UE is hereinafter referred to.

The technical scheme provided by the application is suitable for the scene shown in fig. 1, and the scene comprises the UE of the cell and the base station corresponding to the cell. In fig. 1, in step a, a base station sends, to a UE, related information including a CSI-RS signal, a CSI report configuration (CSI report configuration), and a CSI-RS resource; step b, the UE generates a CSI report according to the received information and sends the CSI report to the base station; and step c, the base station generally performs downlink resource scheduling on each terminal device in the cell based on the CSI report, and transmits precoding data and the like to the UE.

The base station may configure at least one CSI reporting configuration for the UE through a high-level signaling, where each CSI reporting configuration includes a CSI reporting configuration identification number (CSI report configuration ID) and the like. Currently, there are three CSI reporting types supported in a New Radio Access Technology (NR): periodic CSI (periodic CSI) reporting, Semi-static CSI (Semi-persistent CSI) reporting, and aperiodic CSI (aperiodic CSI) reporting.

For periodic CSI reporting and semi-static CSI reporting, the CSI reporting configuration includes a time sequence configuration parameter of a CSI report, which is used to indicate a period and an offset of the CSI report, that is, the time sequence configuration parameter indicates slot location information occupied by the CSI report, the UE reports the CSI in a corresponding slot based on the configuration parameter, and the base station also allocates a Physical Uplink Control Channel (PUCCH) resource or a Physical Uplink Shared Channel (PUSCH) resource to the UE based on the configuration parameter; for aperiodic CSI-RS reporting, the CSI reporting configuration does not include the timing configuration of the CSI report, that is, the timeslot position where the CSI report is located is not notified in the higher layer signaling. And the base station indicates whether the CSI information is reported or not through a CSI reporting triggering field (CSI report triggering field) in the DCI signaling. The CSI reporting trigger field comprises a state used for indicating that CSI reporting is not triggered, and also comprises at least one state used for indicating that at least one CSI reporting is triggered, the base station informs each state of corresponding at least one CSI reporting configuration ID through RRC signaling, and when the base station indicates one of the states, the base station indicates that the CSI reporting corresponding to the at least one CSI reporting configuration ID corresponding to the state is triggered. At this time, the time slot in which the triggered CSI report is located is the Y-th time slot after the time slot in which the DCI signaling triggering the CSI report is located, where a Y value is a fixed value or a value notified by the base station through signaling.

In addition, each CSI reporting configuration is associated with at least one CSI-RS Resource, and the base station notifies the UE of the association relationship through Radio Resource Control (RRC). That is to say, the base station associates at least one CSI-RS resource identifier with each CSI reporting configuration identifier through RRC signaling, and after the association relationship is successfully established, both the base station and the UE can determine that the CSI reported by the UE is obtained based on the CSI-RS resource associated therewith.

In step b, the UE obtains a corresponding CSI report by receiving information sent by the base station and measuring CSI-RS resources. The UE carries the CSI report on a Physical Uplink Shared Channel (PUSCH) time-frequency resource or a Physical Uplink Control Channel (PUCCH) time-frequency resource. The role of the UE reporting CSI is to provide the base station with the layer number (layer), the precoding matrix, the Modulation and Coding Scheme (MCS) used for transmitting data. Wherein, the RI is used to indicate the number of layers (layers) used for transmitting data; the TPMI is used for indicating a precoding matrix used by transmission data so as to support a base station to adopt a space division multiplexing transmission mode; the CQI is used to indicate a quantization result of the channel quality status information to support the base station to determine an appropriate MCS. The reporting modes of the TPMI can be divided into wideband TPMI reporting and sub-band TPMI reporting. When the UE is indicated to be a broadband TPMI report by the base station through signaling, the UE reports the TPMI suitable for the whole system bandwidth; when the UE is indicated by the base station through signaling to be a sub-band TPMI for reporting, the UE reports a plurality of TPMIs, and each TPMI is respectively suitable for different sub-bands. The sub-band refers to a sub-band obtained by uniformly dividing a CSI reporting bandwidth (the bandwidth of the frequency band may be active BWP or a frequency domain bandwidth occupied by a CSI-RS resource based on CSI reporting) according to a frequency domain granularity configured by a base station, where the CSI information corresponding to each sub-band is sub-band CSI.

Since there may be a shortage of CSI resources used by the UE to send CSI reports, i.e. PUSCH resources or PUCCH resources allocated by the base station for it, the partial CSI reports need to be discarded, i.e. not sent to the base station any more. In the prior art, a priority ranking rule is generally defined, all the sub-band CSI to be reported are ranked according to the priority ranking rule, and when resources are insufficient, the sub-band CSI with the lowest priority is preferentially discarded according to the priority of each sub-band CSI until the CSI resources are enough to carry the remaining sub-band CSI.

In the existing priority ordering rule, the CSI of the subband corresponding to the odd subband and the CSI of the subband corresponding to the even subband corresponding to each CSI reporting configuration are used as a set, as shown in fig. 2, each box is a set, and N is the number of CSI reporting configurations in 1 timeslot. The priority levels are arranged from high to low according to the CSI reporting configuration identifications corresponding to each CSI reporting configuration from small to large, and for each CSI reporting configuration, the priority level of the sub-band CSI corresponding to the even sub-band is higher than that of the sub-band CSI corresponding to the odd sub-band. Based on the priority regulation, when the CSI resource is insufficient, the UE determines the reported CSI information according to the priority from high to low, that is, preferentially reports the CSI report corresponding to the box with the high priority, and discards the CSI report corresponding to the box with the low priority.

The priority of all CSI reporting configurations reported in the time slot is predefined in view of the prior art. If the ID corresponding to a certain CSI reporting configuration is smaller, the CSI reporting configuration will report preferentially and the CSI reporting information corresponding to the remaining CSI reporting configurations will not report any more due to the lower priority, the CSI information corresponding to some CSI reporting configurations obtained by the base station will be incomplete, and the PDSCH scheduling of the UE by the incomplete CSI information base station will be limited compared to the complete CSI information corresponding to other CSI reporting configurations. For example, as shown in fig. 3, assuming that reporting of CSI reports corresponding to 2 CSI reporting configurations can be supported currently, according to the CSI reporting priority rule provided in the prior art, the UE only reports CSI reporting configuration #1 and does not report CSI reporting configuration #2 any more. However, the CSI reporting configuration #2 has less limitation on data scheduling than the CSI reporting configuration #1, that is, the base station cannot schedule subbands #0, #4, #8, and #9 for the UE based on the CSI reporting configuration #1 for data scheduling.

Based on the above concept and the problems existing in the prior art, an embodiment of the present application provides a CSI reporting method, and a specific process of the method is shown in fig. 4.

Step 401, a UE receives M CSI reporting configurations issued by a base station, configuration information of a first CSI-RS resource associated with each CSI reporting configuration, and a first signaling; the first signaling is used for indicating time-frequency resources which do not bear CSI-RS in each CSI-RS resource;

step 402, for any one CSI reporting configuration associated first CSI-RS resource, the UE determines, according to the first signaling, a second CSI-RS resource corresponding to the CSI reporting configuration, where the second CSI-RS resource is a time-frequency resource that does not carry a CSI-RS in the CSI reporting configuration associated first CSI-RS resource;

step 403, the UE determines a priority order of the M CSI reporting configurations according to a first CSI-RS resource and a second CSI-RS resource corresponding to each CSI reporting configuration;

step 404, the UE sends a CSI report to a base station according to the priority order; the CSI report is generated by the UE according to each CSI reporting configuration and configuration information of CSI-RS resources related to each CSI reporting configuration.

It should be noted that one CSI reporting configuration may correspond to multiple CSI-RS resources, and the first CSI-RS resource may be any one of the multiple CSI-RS resources.

Because the base station firstly transmits the CSI-RS signal, at least one CSI reporting configuration and other high-level signaling to the UE, after the UE receives the information, the UE measures the channel state of each CSI-RS resource corresponding to each CSI reporting configuration, and further generates a CSI report corresponding to each CSI reporting configuration. Because the resource for bearing the CSI report is insufficient, the UE needs to determine the priority rule, preferentially report the CSI report corresponding to the high-priority CSI report configuration to the base station, and discard the CSI report corresponding to the lower-priority CSI report configuration. In the embodiment of the present application, determining the priority of the CSI report corresponding to the CSI reporting configuration mainly depends on two principles, one of which is: determining the priority order of the CSI reports corresponding to the CSI reporting configuration according to the sequence from small to large of the CSI reporting configuration identifier corresponding to each CSI reporting configuration, namely, the smaller the CSI reporting configuration identifier is, the higher the priority of the CSI report corresponding to the CSI reporting configuration is; principle two: the smaller the number of time-frequency resources which do not bear the CSI-RS and correspond to the CSI reporting configuration is, the higher the priority of the CSI report corresponding to the CSI reporting configuration is.

That is to say, in this embodiment of the present application, for a first CSI-RS resource associated with one CSI reporting configuration, when the first CSI-RS resource overlaps with time-frequency resources occupied by other reference signals or channels, a CSI report associated with the first CSI-RS resource adjusts a priority according to a degree of puncturing of the first CSI-RS resource, where the degree of puncturing may be described as: the ratio of the number of punctured time-frequency resources (with resource blocks as granularity or with resource elements as granularity) in the CSI-RS resource to the total number of time-frequency resources occupied by the CSI-RS resource. In other words, in this embodiment of the present application, the UE determines, based on the CSI reporting configuration identifier configured for the UE by the base station, the priority of the CSI report corresponding to the CSI reporting configuration, and also determines, based on the degree to which the first CSI-RS resource associated with the CSI reporting configuration is punctured, the priority of the CSI report corresponding to the CSI reporting configuration.

Hereinafter, some terms in the present application are explained to facilitate understanding by those skilled in the art.

1) Plural means two or more.

2) The terms "first," "second," and the like in the description of the present application are used for descriptive purposes only and are not intended to indicate or imply relative importance nor order to be construed.

In order to more clearly describe the embodiment of the present application, the method for determining the priority corresponding to step 403 is illustrated in detail by three priority determining manners respectively and with reference to the attached drawings.

The first method is as follows:

for any CSI reporting configuration in M CSI reporting configurations configured by a base station for UE, the UE firstly determines all time-frequency resources not bearing CSI-RS, namely, punched time-frequency resources, of a first CSI-RS resource associated with the CSI reporting configuration based on a first signaling, all the punched time-frequency resources form a second CSI-RS resource, and compares REs occupied by the second CSI-RS resource with REs occupied by the first CSI-RS resource to obtain a first ratio, so that the UE can sequentially determine first ratios corresponding to the M CSI reporting configurations, and then can determine a priority order of the M CSI reporting configurations based on identifications of the M CSI reporting configurations. The larger the first ratio is, the lower the priority of the CSI reporting configuration is, and then the lower the priority of the CSI report corresponding to the CSI reporting configuration is, and in addition, the larger the identifier of the CSI reporting configuration is, the lower the priority of the CSI reporting configuration is, and then the lower the priority of the CSI report corresponding to the CSI reporting configuration is.

It should be noted that a plurality of first CSI-RS resources may be associated in one CSI reporting configuration, for example, one CSI reporting configuration is associated with two first CSI-RS resources, and then the first ratio corresponding to the CSI reporting configuration may be a ratio of the number of REs occupied by all punctured time-frequency resources in the two first CSI-RS resources to the total number of REs occupied by the two first CSI-RS resources. Besides, the ratio can be calculated by counting the number of REs, and the first ratio can be calculated by counting the number of RBs, and the principle of the method for calculating the first ratio is consistent with that of the method, so that the details are not repeated.

The second method comprises the following steps:

since the channel states of different sub-bands may also be different, the UE in this embodiment further considers the measured CSI-RS resource, that is, the sub-band CSI of each sub-band in the CSI reporting bandwidth. There may be some sub-bands punctured in a CSI reporting bandwidth, so that the sub-band CSI of the punctured sub-band is not reported any more, or a predefined default value is reported. At this time, a third ratio may be determined based on a ratio of a punctured subband to an unpunctured subband in the CSI reporting bandwidth, and a priority order of the M CSI reporting configurations may be determined according to the M third ratios corresponding to the M CSI reporting configurations and identifiers of the M CSI reporting configurations.

Specifically, the UE determines that a CSI reporting bandwidth corresponding to the CSI reporting configuration is divided into X subbands, and when there are Y subbands with a punctured condition, that is, all or part of the Y subbands include punctured time-frequency resources, calculates a ratio of Y to X, and then determines a third ratio corresponding to the CSI reporting configuration, and then determines a priority order of the M CSI reporting configurations according to the M third ratios and identifiers of the M CSI reporting configurations, wherein the larger the third ratio is, the lower the priority of the CSI reporting configuration is, and then the lower the priority of the CSI report corresponding to the CSI reporting configuration is, and in addition, the larger the identifier of the CSI reporting configuration is, the lower the priority of the CSI reporting configuration is, and then the lower the priority of the CSI report corresponding to the CSI reporting configuration is.

It should be noted that a plurality of first CSI-RS resources may be associated in one CSI reporting configuration, for example, one CSI reporting configuration is associated with two first CSI-RS resources, that is, the CSI reporting bandwidths corresponding to the CSI reporting configurations are two, and the third ratio corresponding to the CSI reporting configuration may be a ratio of the number of all punctured subbands in the two CSI reporting bandwidths to the total number of subbands in the two CSI reporting bandwidths.

As shown in fig. 5, CSI-RS resources corresponding to subband #0 and subband #2 are punctured, and then CSI corresponding to subband #0 and subband #2 is not reported or a predefined default value is reported. On this basis, after determining the priority sequence of each CSI reporting configuration according to the CSI reporting configuration identifier, the UE adjusts the priority sequence of each CSI reporting configuration based on the third ratio of each CSI reporting configuration, where the adjusted priority sequence is that the higher the third ratio corresponding to the CSI reporting configuration is, the lower the priority of the CSI r reporting configuration is.

The third method comprises the following steps:

due to insufficient CRS resources, generally, the UE does not report the CSI report corresponding to the low-priority CSI reporting configuration any more, and considering that each sub-band of the CSI reporting bandwidth corresponding to the CSI reporting configuration corresponds to a sub-band CSI respectively, the UE can select to report the sub-band CSI of the sub-band which does not generate the punching condition to the base station by correspondingly and integrally discarding the CSI report corresponding to the CSI reporting configuration under the condition of resource allowance, so that the CSI report acquired by the base station is relatively complete, and the subsequent scheduling of downlink resources is facilitated. Therefore, the CSI report corresponding to each CSI reporting configuration is further refined, and the refined CSI report corresponding to one CSI reporting configuration contains the CSI of the subband of the odd subband and the CSI of the field of the even subband. Then, for any CSI reporting configuration, the UE determines the punching state of an odd subband and the punching state of an even subband in the CSI reporting configuration, and if the punching of the odd subband is relatively more, the CSI priority of the odd subband is lower; if the even subband has relatively more perforations, the subband CSI priority of the even subband is lower. Then, when reporting the CSI, the UE may choose to discard only the low-priority CSI of the subband configured for reporting the CSI, and report the high-priority CSI of the subband to the base station.

The priority comparison method for the sub-band CSI of the odd sub-band and the sub-band CSI of the even sub-band of the CSI reporting bandwidth corresponding to one CSI configuration may be that the number of REs of the time-frequency resources not carrying CSI-RS of the even sub-band and the number of REs of the time-frequency resources not carrying CSI-RS of the odd sub-band are counted, and the number of REs of the time-frequency resources not carrying CSI-RS of the even sub-band is compared with the number of REs of the time-frequency resources not carrying CSI-RS of the odd sub-band to obtain a second ratio. If the second ratio is greater than 1, the odd numbered sub-band is indicated to have more time-frequency resources not bearing CSI-RS, namely more perforations, so that the sub-band CSI priority of the odd numbered sub-band is higher; on the contrary, the even subband has more time-frequency resources not carrying CSI-RS, that is, more puncturing, and the subband has higher CSI priority.

As shown in fig. 5, the CSI reporting bandwidth shown in the figure is composed of subband #0, subband #1, subband #2, subband #3, and subband # 4. The odd subbands are: subband #1, subband # 3; the even subbands are: subband #0, subband #2, and subband # 4. Since subbands #0, #2 of the even subbands are punctured and the odd subbands are not punctured, the subband CSI priority for the odd subbands is higher than the subband CSI priority for the even subbands.

It should be noted that a plurality of first CSI-RS resources may be associated in one CSI reporting configuration, for example, one CSI reporting configuration is associated with two first CSI-RS resources, that is, the number of CSI reporting bandwidths corresponding to the CSI reporting configurations is two, so that the number of punctured even subbands in the two CSI reporting bandwidths and the number of punctured odd subbands in the two CSI reporting bandwidths may be counted, and the two numbers are compared to obtain a second ratio.

It is assumed that the number of CSI reports issued by the base station for the UE is 4, as shown in fig. 6, CSI report configuration #0, CSI report configuration #1, CSI report configuration #2, and CSI report configuration #3, respectively. Assume that fig. 6 is a CSI reporting bandwidth corresponding to CSI reporting configuration # 1. According to the rule of determining the priority order in the third mode, firstly, the priority orders from high to low are determined to be CSI reporting configuration #0, CSI reporting configuration #1, CSI reporting configuration #2 and CSI reporting configuration #3, and further, the sub-band CSI priority of the odd sub-band in the CSI reporting configuration #1 is determined to be higher than the sub-band CSI priority of the even sub-band. Because the CSI reporting configuration #0, the CSI reporting configuration #2 and the CSI reporting configuration #3 do not have the condition of punching, the priority order is readjusted according to the punching condition, and the adjusted order is the CSI reporting configuration #0, the CSI reporting configuration #2, the CSI reporting configuration #3 and the CSI reporting configuration # 1. Based on the priority ranking result, the subsequent UE selects to discard the CSI report corresponding to the CSI report configuration #1 according to the size condition of the CSI resource; or under the condition that the CSI resource allows, the UE only discards the sub-band CSI of the even sub-band corresponding to the CSI reporting configuration #1, and the sub-band CSI of the odd sub-band corresponding to the CSI reporting configuration #1, the CSI report of the CSI reporting configuration #0, the CSI report of the CSI reporting configuration #2 and the CSI report of the CSI reporting configuration #3 are sent to the base station together.

In addition, the priority of the sub-band CSI of the odd sub-band in the CSI reporting configuration corresponding to the CSI reporting bandwidth may also be directly defined to be higher than the priority of the sub-band CSI of the even sub-band, or the priority of the sub-band CSI of the even sub-band in the CSI reporting configuration corresponding to the CSI reporting bandwidth is defined to be higher than the priority of the sub-band CSI of the odd sub-band.

In addition, assuming that the UE determines that the CSI report corresponding to the CSI reporting configuration #1 needs to be discarded, if it is determined that the subband CSI priority of the even subband is higher than the subband CSI of the odd subband and the resource is allowed, the UE may select to replace the subband CSI of the subband with partial puncturing in the even subband with the subband CSI of the subband with partial non-puncturing in the odd subband corresponding to the CSI reporting configuration #1, and it needs to be noted that the selected subband with partial non-puncturing in the odd subband is adjacent to the subband with partial puncturing in the even subband. As shown in fig. 7, when CSI reporting configuration #1 is of a lower priority, and the CSI of subband #0, subband #4, and subband #8 in the even subbands is affected by puncturing CSI-RS resource and the CSI of subband in the even subbands is no longer reported, the UE replaces subband #0 with #1 in the odd subbands, replaces subband #4 with #5 in the odd subbands, and replaces subband #8 with #7 in the odd subbands, and finally selects subband #1, subband #2, subband #5, subband #6, and subband #7 in the CSI reporting bandwidth corresponding to CSI reporting configuration # 1.

The method is as follows:

as can be seen from the priority ranking mode of the third mode, a priority sequence is first generated according to the ID of the CSI reporting configuration and the first ratio ranking corresponding to the CSI reporting configuration, and then the priorities of the odd subbands and the even subbands in the CSI reporting bandwidth corresponding to each CSI reporting configuration are ranked. In this embodiment of the present application, after being sorted according to the IDs of the CSI reporting configurations, a fourth ratio of a punctured subband of an odd subband to a total subband of the odd subbands in the CSI reporting bandwidths corresponding to the CSI reporting configurations and a fourth ratio of a punctured subband of an even subband to a total subband of the even subbands in the CSI reporting bandwidths corresponding to the CSI reporting configurations are respectively calculated, then the magnitudes of the fourth ratios are compared, and priority orders of the odd subbands and the even subbands in the CSI reporting bandwidths corresponding to the CSI reporting configurations are arranged according to the magnitudes of the fourth ratios. For example, as shown in fig. 5, the CSI report configuration #0, the CSI report configuration #1, the CSI report configuration #2, and the CSI report configuration #3 are respectively provided. Determining priority levels from high to low according to the sequence of IDs from small to large, wherein the priority levels are CSI reporting configuration #0, CSI reporting configuration #1, CSI reporting configuration #2 and CSI reporting configuration #3, each CSI reporting configuration corresponds to an even subband and an odd subband respectively, so that 8 even subbands and odd subbands exist in total, namely a CSI reporting configuration #0 odd subband, a CSI reporting configuration #0 even subband, a CSI reporting configuration #1 odd subband, a CSI reporting configuration #1 even subband, a CSI reporting configuration #2 odd subband, a CSI reporting configuration #2 even subband, a CSI reporting configuration #3 odd subband and a CSI reporting configuration #3 even subband, calculating a fourth ratio of a perforated subband and an even subband of each even subband to a total subband, calculating a fourth ratio of a perforated subband and an odd subband of the odd subband, and comparing the 8 fourth ratios for reordering, the possibly obtained results are the odd subband of CSI reporting configuration #0, the odd subband of CSI reporting configuration #1, the even subband of CSI reporting configuration #0, the even subband of CSI reporting configuration #1, the even subband of CSI reporting configuration #2, the odd subband of CSI reporting configuration #3, the even subband of CSI reporting configuration #3, and the odd subband of CSI reporting configuration # 2.

Further, after the UE determines the priority order of each CSI reporting configuration issued by the base station according to any one of the above manners, the UE needs to select the CSI report corresponding to the CSI reporting configuration with the high priority to be reported to the base station according to the CSI resource, and the CSI report corresponding to the CSI reporting configuration with the low priority is discarded. And for the CSI report configured by the CSI report selected to be reported, the CSI report is specifically carried out according to the following two scenes.

Scene one:

for the CSI reporting bandwidth corresponding to the CSI reporting configuration #0 selected by the UE to report, assuming that the CSI reporting bandwidth includes 10 subbands, if all RBs in the subband #1 are punctured, the UE does not report the subband CSI of the subband #1 any more in reporting, and only reports the subband CSI of the remaining subbands. For example, all the sub-bands #2 corresponding to the CSI reporting configuration #1 shown in fig. 5 are punctured, and assuming that the UE reports the CSI of the CSI reporting configuration #1, the UE will directly discard the sub-band CSI of the sub-band #2, and then select the sub-bands CSI of the remaining sub-bands to report.

Scene two:

for the CSI reporting configuration #0 selected by the UE to report, corresponding to the CSI reporting bandwidth, assuming that the CSI reporting bandwidth includes 10 subbands, if only a part of RBs in the subband #1 is punctured, as shown in field #0 in fig. 5, the UE needs to determine whether to report the subband CSI of the subband #0 according to the following determination manner.

The judgment method is as follows: and calculating the ratio of the number of the punctured REs in the subband #0 to the total number of the subband #0, if the ratio is greater than a set threshold, for example, the set threshold is 0.5, then the subband CSI of the subband #1 is not reported, otherwise, the subband CSI of the subband #1 is selected to be reported.

It should be noted that, when the CSI resource is insufficient and the CSI of some subbands is no longer reported, the UE dynamically adjusts and sets the threshold according to the CSI resource allocated for CSI reporting, so as to determine the number of the CSI of the subband to be reported for each CSI reporting configuration. The specific threshold adjustment and setting manner may be as follows: a ratio is determined in advance by a base station and a UE as a reference threshold for determining whether each sub-band CSI is reported, as shown in fig. 8, the reference threshold is 0.5, when the ratio corresponding to a certain sub-band CSI in a CSI reporting configuration is higher than the threshold, the corresponding sub-band CSI is not reported any more, according to the determination of the threshold, the sub-band #0, the sub-band #5, the sub-band #9 will not report the corresponding sub-band CSI any more, but the ratio corresponding to the sub-band #1, the sub-band #4, the sub-band #8 does not reach the threshold, so the UE will report the sub-band CSI, and at this time, the CSI reporting configuration #2 does; at this time, the UE will reduce the threshold to 0.4 according to a predefined threshold determination method, and at this time, the ratio of subband #1, subband #4, and subband #8 reaches the threshold, so that the UE will not report the above subband CSI, and at this time, the UE will report the subband CSI corresponding to CSI reporting configuration # 2.

And when the terminal equipment determines the priority of the carrier wave or the CSI report or the CSI, the terminal equipment determines the CSI report content based on the priority. For the sub-band CSI with a lower priority, the terminal device does not report the sub-band CSI any more according to a preset condition, wherein the preset condition may be that the number of the second CSI-RS resources included in the sub-band CSI is greater than a threshold value. And on the PUSCH resource occupied by the sub-band CSI which is not reported any more, the terminal reports or reports the broadband CSI according to a predefined value.

In view of the above method flow, the present application provides a terminal device, the specific execution content of the terminal device may be implemented by referring to the above method, and fig. 9 is a schematic structural diagram of the terminal device provided in the present application, where the terminal device includes: receiving unit 901, processing unit 902, sending unit 903, wherein:

a receiving unit 901, configured to receive M CSI reporting configurations issued by a base station, a configuration of a first CSI-RS resource associated with each CSI reporting configuration, and a first signaling; the first signaling is used for indicating a time-frequency resource which does not bear a CSI-RS in the first CSI-RS resource, and M is a positive integer greater than or equal to 1;

a determining unit 902, configured to determine, according to the first signaling, a second CSI-RS resource corresponding to any one CSI reporting configuration for a first CSI-RS resource associated with the CSI reporting configuration, where the second CSI-RS resource is a time-frequency resource that does not carry a CSI-RS in the first CSI-RS resource associated with the CSI reporting configuration; determining the priority order of the M CSI reporting configurations according to the first CSI-RS resource and the second CSI-RS resource corresponding to each CSI reporting configuration;

a sending unit 903, configured to send a CSI report to the base station according to the priority order; wherein the CSI report is generated according to each CSI reporting configuration and configuration information of the first CSI-RS resource associated with each CSI reporting configuration.

There are multiple methods for determining priority, and in a first possible design, the determining unit 902 is specifically configured to: determining a first ratio of Resource Elements (RE) occupied by a second CSI-RS resource and Resource Elements (RE) occupied by a first CSI-RS resource corresponding to any one CSI reporting configuration; determining a priority order of the M CSI reporting configurations according to the M first ratios of the M CSI reporting configurations and the identifiers of the M CSI reporting configurations.

In a second possible design, the determining unit 902 is specifically configured to:

for any CSI reporting configuration, determining a third CSI-RS resource and a fourth CSI-RS resource corresponding to the CSI reporting configuration according to a second CSI-RS resource corresponding to the CSI reporting configuration, wherein the third CSI-RS resource is a time-frequency resource which does not carry CSI-RS in an even subband set in the CSI reporting bandwidth corresponding to the CSI reporting configuration, and the fourth CSI-RS resource is a time-frequency resource which does not carry CSI-RS in an odd subband set in the CSI reporting bandwidth corresponding to the CSI reporting configuration; determining a second ratio of Resource Elements (REs) occupied by the third CSI-RS resource to Resource Elements (REs) occupied by the fourth CSI-RS resource; and determining the priority sequence of the M CSI reporting configurations according to the second ratio.

In a third possible design, the determining unit 902 is specifically configured to:

for any CSI reporting configuration, determining that any RE (resource element) in Resource Elements (REs) occupied by the second CSI-RS resource exists in Y sub-bands in X sub-bands in a reporting bandwidth corresponding to the CSI reporting configuration; x is greater than or equal to Y, and X and Y are positive integers;

determining a third ratio of said X to said Y; determining a priority order of the M CSI reporting configurations according to the M third ratios corresponding to the M CSI reporting configurations and the identifiers of the M CSI reporting configurations.

Since the CSI reporting bandwidth corresponding to the CSI reporting configuration may be divided into different subbands, the apparatus further includes a generating unit 904, where the generating unit 904 is configured to: replacing the sub-band CSI corresponding to any time-frequency resource in the third CSI-RS resource contained in the even sub-band set with the sub-band CSI corresponding to any time-frequency resource in the fourth CSI-RS resource not contained in the odd sub-band set; and generating a CSI report according to the priority order and the CSI of the sub-bands corresponding to the replaced even sub-band set.

In addition, in a possible design, the sending unit 903 is specifically configured to determine, according to the priority order, L CSI reporting configurations whose priorities meet a set condition, where L is smaller than equal M;

determining an effective value of each sub-band in a CSI reporting bandwidth corresponding to the CSI reporting configuration aiming at any one of the L CSI reporting configurations, wherein the effective value is the number of RBs for bearing CSI-RS in one sub-band and the total number of RBs of the one sub-band; and if the effective value of the sub-band is larger than a set threshold value, reporting the sub-band CSI of the sub-band.

If the effective value of the subband is not greater than the set threshold, the sending unit 903 is further configured to not report the subband CSI of the subband.

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. The functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

Fig. 10 is a schematic structural diagram of another terminal device provided in the present application, where the terminal device includes: a communication interface 1001, a processor 1002, a memory 1003, and a bus system 1004;

the memory 1003 is used for storing programs. In particular, the program may include program code including computer operating instructions. The memory 1003 may be a random-access memory (RAM) or a non-volatile memory (NVM), such as at least one disk memory. Only one memory is shown in the figure, but of course, the memory may be provided in plural numbers as necessary. The memory 1003 may also be memory in the processor 1002.

The memory 1003 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof:

and (3) operating instructions: including various operational instructions for performing various operations.

Operating the system: including various system programs for implementing various basic services and for handling hardware-based tasks.

The processor 1002 controls the operation of the terminal device 1000, and the processor 1002 may also be referred to as a Central Processing Unit (CPU). In particular implementations, the various components of network device 1000 are coupled together by a bus system 1004, where bus system 1004 may include a power bus, a control bus, a status signal bus, and the like, in addition to a data bus. For clarity of illustration, however, the various buses are designated in the figure as the bus system 1004. For ease of illustration, it is only schematically drawn in fig. 10.

Specifically, the communication interface 1001 receives M CSI reporting configurations issued by the base station, a configuration of a first CSI-RS resource associated with each CSI reporting configuration, and a first signaling.

The processor 1002 configures, for any one CSI reporting configuration, a related first CSI-RS resource based on information of the interface of the communication interface 1001, and the terminal device determines, according to the first signaling, a second CSI-RS resource corresponding to the CSI reporting configuration, where the second CSI-RS resource is a time-frequency resource that does not carry a CSI-RS in the first CSI-RS resource related to the CSI reporting configuration; determining the priority order of the M CSI reporting configurations according to the first CSI-RS resource and the second CSI-RS resource corresponding to each CSI reporting configuration;

next, the processor 1002 sends CSI reports to the base stations via the communication interface 1001 according to the priority order.

There are multiple methods for determining priority, and in a first possible design, the processor 1002 is specifically configured to: determining a first ratio of Resource Elements (RE) occupied by a second CSI-RS resource and Resource Elements (RE) occupied by a first CSI-RS resource corresponding to any one CSI reporting configuration; determining a priority order of the M CSI reporting configurations according to the M first ratios of the M CSI reporting configurations and the identifiers of the M CSI reporting configurations.

In a second possible design, the processor 1002 is specifically configured to:

In a third possible design, the processor 1002 is specifically configured to:

The method disclosed in the embodiments of the present application can be applied to the processor 1002 or implemented by the processor 1002. The processor 1002 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 1002. The processor 902 may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1003, and the processor 1002 reads the information in the memory 1003 and performs the above method steps in conjunction with its hardware.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. 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.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit and scope of the application. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.

Claims

1. A CSI reporting method is characterized in that the method comprises the following steps:

the method comprises the steps that terminal equipment receives M Channel State Information (CSI) reporting configurations issued by a base station, configuration of a first CSI-RS resource associated with each CSI reporting configuration, and a first signaling; the first signaling is used for indicating a time-frequency resource which does not bear a CSI-RS in the first CSI-RS resource, and M is a positive integer greater than or equal to 1;

for any one CSI reporting configuration associated first CSI-RS resource, the terminal equipment determines a second CSI-RS resource corresponding to the CSI reporting configuration according to the first signaling, wherein the second CSI-RS resource is a time-frequency resource which does not carry a CSI-RS in the first CSI-RS resource associated with the CSI reporting configuration;

the terminal equipment determines the priority sequence of the M CSI reporting configurations according to the first CSI-RS resource and the second CSI-RS resource corresponding to each CSI reporting configuration;

the terminal equipment sends a CSI report to a base station according to the priority order; the CSI report is generated by the terminal equipment according to each CSI reporting configuration and the configuration information of the first CSI-RS resource associated with each CSI reporting configuration.

2. The method of claim 1, wherein the determining, by the terminal device, the priority order of the M CSI reporting configurations according to the first CSI-RS resource and the second CSI-RS resource corresponding to each CSI reporting configuration comprises:

for any CSI reporting configuration, the terminal equipment determines a first ratio of Resource Elements (RE) occupied by a second CSI-RS resource and Resource Elements (RE) occupied by a first CSI-RS resource corresponding to the CSI reporting configuration;

3. The method of claim 1, wherein the determining, by the terminal device, the priority order of the M CSI reporting configurations includes:

for any CSI reporting configuration, the terminal equipment determines a third CSI-RS resource and a fourth CSI-RS resource corresponding to the CSI reporting configuration according to a second CSI-RS resource corresponding to the CSI reporting configuration, wherein the third CSI-RS resource is a time-frequency resource which does not carry CSI-RS in an even subband set in the CSI reporting bandwidth corresponding to the CSI reporting configuration, and the fourth CSI-RS resource is a time-frequency resource which does not carry CSI-RS in an odd subband set in the CSI reporting bandwidth corresponding to the CSI reporting configuration;

the terminal equipment determines a second ratio of Resource Elements (RE) occupied by the third CSI-RS resource to Resource Elements (RE) occupied by the fourth CSI-RS resource;

and the terminal equipment determines the priority sequence of the M CSI reporting configurations according to the second ratio.

4. The method of claim 3, wherein after the terminal device determines the priority order of the M CSI reporting configurations according to the second ratio, the method further comprises:

the terminal equipment replaces the sub-band CSI corresponding to any time-frequency resource in the third CSI-RS resource contained in the even sub-band set with the sub-band CSI corresponding to any time-frequency resource in the fourth CSI-RS resource not contained in the odd sub-band set;

and the terminal equipment generates a CSI report according to the priority order and the CSI of the sub-bands corresponding to the replaced even sub-band set.

5. The method of claim 1, wherein the determining, by the terminal device, the priority order of the M CSI reporting configurations according to the first CSI-RS resource and the second CSI-RS resource corresponding to each CSI reporting configuration comprises:

for any CSI reporting configuration, the terminal equipment determines that any RE in resource elements RE occupied by the second CSI-RS resource exists in Y sub-bands in X sub-bands in a reporting bandwidth corresponding to the CSI reporting configuration; x is greater than or equal to Y, and X and Y are positive integers;

the terminal equipment determines a third ratio of the X to the Y;

6. The method of claim 1, wherein the terminal device sends CSI reports to the base station according to the priority order, comprising:

the terminal equipment determines L CSI reporting configurations with priorities meeting set conditions according to the priority sequence, wherein L is smaller than the equivalent M;

the terminal equipment determines an effective value of each sub-band in a CSI reporting bandwidth corresponding to the CSI reporting configuration aiming at the CSI reporting configuration of any one of the L, wherein the effective value is the number of RBs for bearing CSI-RS in one sub-band and the total number of RBs of the one sub-band;

and if the effective value of the sub-band is larger than a set threshold value, the terminal equipment reports the sub-band CSI of the sub-band.

7. The method of claim 6, further comprising:

and if the effective value of the sub-band is not larger than the set threshold, the terminal equipment does not report the sub-band CSI of the sub-band.

8. A CSI reporting apparatus, the apparatus comprising:

the receiving unit is used for receiving M Channel State Information (CSI) reporting configurations issued by a base station, configuration of a first CSI-RS resource associated with each CSI reporting configuration, and a first signaling; the first signaling is used for indicating a time-frequency resource which does not bear a CSI-RS in the first CSI-RS resource, and M is a positive integer greater than or equal to 1;

a determining unit, configured to determine, according to the first signaling, a second CSI-RS resource corresponding to any one CSI reporting configuration for a first CSI-RS resource associated with the CSI reporting configuration, where the second CSI-RS resource is a time-frequency resource that does not carry a CSI-RS in the first CSI-RS resource associated with the CSI reporting configuration; determining the priority order of the M CSI reporting configurations according to the first CSI-RS resource and the second CSI-RS resource corresponding to each CSI reporting configuration;

a sending unit, configured to send a CSI report to a base station according to the priority order; wherein the CSI report is generated according to each CSI reporting configuration and configuration information of the first CSI-RS resource associated with each CSI reporting configuration.

9. The apparatus according to claim 8, wherein the determining unit is specifically configured to:

determining a first ratio of Resource Elements (RE) occupied by a second CSI-RS resource and Resource Elements (RE) occupied by a first CSI-RS resource corresponding to any one CSI reporting configuration; determining a priority order of the M CSI reporting configurations according to the M first ratios of the M CSI reporting configurations and the identifiers of the M CSI reporting configurations.

10. The apparatus according to claim 8, wherein the determining unit is specifically configured to:

for any CSI reporting configuration, determining a third CSI-RS resource and a fourth CSI-RS resource corresponding to the CSI reporting configuration according to a second CSI-RS resource corresponding to the CSI reporting configuration, wherein the third CSI-RS resource is a time-frequency resource which does not carry CSI-RS in an even subband set in the CSI reporting bandwidth corresponding to the CSI reporting configuration, and the fourth CSI-RS resource is a time-frequency resource which does not carry CSI-RS in an odd subband set in the CSI reporting bandwidth corresponding to the CSI reporting configuration;

determining a second ratio of Resource Elements (REs) occupied by the third CSI-RS resource to Resource Elements (REs) occupied by the fourth CSI-RS resource;

and determining the priority sequence of the M CSI reporting configurations according to the second ratio.

11. The apparatus of claim 10, further comprising:

a generating unit, configured to replace, in the even-numbered subband set, the subband CSI that corresponds to any time-frequency resource in the third CSI-RS resource with the subband CSI that corresponds to any time-frequency resource in the odd-numbered subband set and does not include any time-frequency resource in the fourth CSI-RS resource; and generating a CSI report according to the priority order and the CSI of the sub-bands corresponding to the replaced even sub-band set.

12. The apparatus according to claim 8, wherein the determining unit is specifically configured to:

13. The apparatus according to claim 8, wherein the sending unit is specifically configured to:

according to the priority sequence, determining L CSI reporting configurations with priorities meeting set conditions, wherein L is smaller than the equivalent M;

determining an effective value of each sub-band in a CSI reporting bandwidth corresponding to the CSI reporting configuration aiming at any one of the L CSI reporting configurations, wherein the effective value is the number of RBs for bearing CSI-RS in one sub-band and the total number of RBs of the one sub-band;

and if the effective value of the sub-band is larger than a set threshold value, reporting the sub-band CSI of the sub-band.

14. The apparatus of claim 13, wherein the sending unit is further configured to: and if the effective value of the sub-band is not larger than the set threshold, not reporting the sub-band CSI of the sub-band.

15. A terminal device, characterized in that the terminal device comprises a communication interface, a processor;

the communication interface is used for receiving M Channel State Information (CSI) reporting configurations issued by a base station, configuration of a first CSI reference signal (CSI-RS) resource associated with each CSI reporting configuration, and a first signaling; the first signaling is used for indicating a time-frequency resource which does not bear a CSI-RS in the first CSI-RS resource, and M is a positive integer greater than or equal to 1;

the processor is configured to determine, for any one CSI reporting configuration associated first CSI-RS resource, according to the first signaling, a second CSI-RS resource corresponding to the CSI reporting configuration, where the second CSI-RS resource is a time-frequency resource that does not carry a CSI-RS in the CSI reporting configuration associated first CSI-RS resource; determining a priority order of the M CSI reporting configurations according to a first CSI-RS resource and a second CSI-RS resource corresponding to each CSI reporting configuration;

the processor is further configured to send a CSI report to a base station through the communication interface according to the priority order; wherein the CSI report is generated according to each CSI reporting configuration and configuration information of the first CSI-RS resource associated with each CSI reporting configuration.

16. The terminal device of claim 15, wherein the processor is specifically configured to:

determining a first ratio of Resource Elements (RE) occupied by a second CSI-RS resource and Resource Elements (RE) occupied by a first CSI-RS resource corresponding to any one CSI reporting configuration;

determining a priority order of the M CSI reporting configurations according to the M first ratios of the M CSI reporting configurations and the identifiers of the M CSI reporting configurations.

17. The terminal device of claim 15, wherein the processor is specifically configured to:

18. The terminal device of claim 17, wherein the processor is further configured to:

replacing the sub-band CSI corresponding to any time-frequency resource in the third CSI-RS resource contained in the even sub-band set with the sub-band CSI corresponding to any time-frequency resource in the fourth CSI-RS resource not contained in the odd sub-band set;

and generating a CSI report according to the priority order and the CSI of the sub-bands corresponding to the replaced even sub-band set.

19. The terminal device of claim 15, wherein the processor is specifically configured to:

determining a third ratio of said X to said Y;

determining a priority order of the M CSI reporting configurations according to the M third ratios corresponding to the M CSI reporting configurations and the identifiers of the M CSI reporting configurations.

20. The terminal device of claim 15, wherein the processor is specifically configured to:

and if the effective value of the sub-band is larger than a set threshold value, reporting the sub-band CSI of the sub-band through the communication interface.

21. The terminal device of claim 20, wherein the processor is further configured to:

and if the effective value of the sub-band is not larger than the set threshold value, reporting the sub-band CSI of the sub-band without the communication interface.

22. A CSI reporting method is characterized in that the method comprises the following steps:

the method comprises the steps that terminal equipment receives configuration information of M first channel state information reference signal CSI-RS resources;

the terminal equipment determines M second CSI-RS resources according to the first resources and the M first CSI-RS resources, wherein each second CSI-RS resource in the M second CSI-RS resources corresponds to each first CSI-RS resource in the M first CSI-RS resources, and each second CSI-RS resource in the M second CSI-RS resources is different from each other; the M second CSI-SR resources are time-frequency resources of CSI-RSs which are overlapped with the first resources in the M first CSI-RS resources;

the terminal equipment determines the priority order of the N CSI related to the M first CSI-RS according to the M first CSI-RS resources and the M second CSI-RS resources; m, N is a positive integer;

and the terminal equipment reports the CSI to a base station according to the priority sequence.

23. The method of claim 22,

the terminal device determines, according to the M first CSI-RS resources and the M second CSI-RS resources, a priority order of the N CSIs associated with the M first CSI-RS, including:

the priority order of CSI associated with any second CSI-RS resource of the M second CSI-RS resources is lower than the priority of CSI not associated with the M second CSI-RS resources.

24. The method according to any of claims 22 to 23, wherein the determining the priority order of the N CSI by the terminal device comprises:

the priority order of the first carrier is lower than the priority order of the second carrier; the first carrier contains any time-frequency resource in the M second CSI-RS resources, and the second carrier does not contain any time-frequency resource in the M second CSI-RS resources.

25. The method according to any of claims 22 to 23, wherein the determining the priority order of the N CSI by the terminal device comprises:

the priority order of the first CSI reporting is lower than that of the second CSI reporting; the reporting bandwidth of the first CSI report includes any time-frequency resource in the M second CSI-RS resources, and the CSI reporting bandwidth of the second CSI report does not include the priority order of CSI report of any time-frequency resource in the M second CSI-RS resources.

26. The method according to any of claims 22 to 23, wherein the determining the priority order of the N CSI by the terminal device comprises:

a priority order of CSI associated with the first set of subbands is lower than a priority order of CSI associated with the second set of subbands; the first subband set comprises any time-frequency resource in the M second CSI-RS resources, and the second subband set does not comprise any time-frequency resource in the M second CSI-RS resources;

27. The method according to any of claims 22 to 23, wherein the determining the priority order of the N CSI by the terminal device comprises:

the priority order of the third carrier is lower than that of the fourth carrier;

the reporting bandwidth corresponding to the third carrier includes Q REs in the M second CSI-RS resources, the reporting bandwidth corresponding to the fourth carrier includes W REs in the M second CSI-RS resources, and Q is greater than W, Q, W is a positive integer; alternatively, the first and second electrodes may be,

28. The method according to any of claims 22 to 23, wherein the determining the priority order of the N CSI by the terminal device comprises:

the priority order of the third CSI report is lower than that of the fourth CSI report;

29. The method of claim 26, wherein after the terminal device determines the priority order of the N CSIs, further comprising:

the terminal equipment replaces the CSI of the sub-band, which corresponds to the sub-band overlapped with any time-frequency resource in the third CSI-RS resource, in the even sub-band set with the CSI of the sub-band, which corresponds to the sub-band not overlapped with any time-frequency resource in the fourth CSI-RS resource, in the odd sub-band set;

30. The method according to any of claims 22 to 23, wherein after determining the priority order of the N CSI associated with the M first CSI-RS resources according to the M first CSI-RS resources and the M second CSI-RS resources, the method further comprises: