CN113517965B

CN113517965B - Method and terminal for acquiring channel state information report

Info

Publication number: CN113517965B
Application number: CN202010281541.1A
Authority: CN
Inventors: 袁江伟; 宋扬; 孙鹏
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2023-04-25
Anticipated expiration: 2040-04-10
Also published as: CN113517965A; WO2021204154A1

Abstract

The invention provides a method and a terminal for acquiring a channel state information report, and relates to the technical field of communication. The method of the invention comprises the following steps: under the condition that a network configures at least two channel state information reference signals (CSI-RS), acquiring at least one CSI report part corresponding to the CSI-RS; and obtaining a CSI report of multiple Transmitting and Receiving Points (TRPs) according to at least one CSI report part corresponding to the CSI-RS. Since the CSI report of the multiple TRP is obtained by combining the CSI report parts corresponding to at least one CSI-RS, that is, the CSI report parts to be reported can be selected for combined reporting according to the requirement when the CSI report of the multiple TRP is reported, and the multiple CSI reports do not need to be reported, so that a more flexible reporting mode can be supported, and meanwhile, the reporting cost can be effectively reduced.

Description

Method and terminal for acquiring channel state information report

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and a terminal for acquiring a channel state information report.

Background

The network device may employ multiple transmission and reception point (multi-TRP (Transmission Reception Point)) techniques in communicating with the terminal device to increase reliability and throughput of the transmission. For example, the terminal device may receive the same data from multiple TRPs to increase the reliability of the transmission, and the terminal device may also receive different data from multiple TRPs to increase the throughput of the transmission.

In general, in a multi-TRP scenario, a terminal device needs to measure channel state information (Channel State Information, CSI) of multiple TRPs and report CSI reports to a network device. Specifically, the network device may configure CSI report configuration and CSI resource configuration for the terminal device, the terminal device may measure CSI of multiple TRPs according to the CSI report configuration and CSI resource configuration, and report the CSI report, the network side determines a multi-TRP transmission mode of the UE according to the CSI report (CSI report) fed back by the UE, for example, dynamic point selection (Dynamic Point Selection, DPS) transmission may select only one TRP among the multiple TRPs to transmit data to a User Equipment (UE, also referred to as a terminal), and NC-JT (non-coherent joint transmission) may then transmit data on resources of the same frequency by two TRPs. However, the CSI report calculation modes corresponding to the two transmission modes are quite different. The existing protocol needs to configure independent CSI reports for NC-JT and non-NC-JT conditions, and 4 CSI reports need to be calculated and reported for a potential NC-JT terminal, so that reporting overhead is increased.

Disclosure of Invention

The embodiment of the invention provides a method and a terminal for acquiring a channel state information report, which are used for solving the problem of high reporting cost in a calculating mode of a multi-TRP CSI report in the related technology.

In order to solve the technical problems, the invention adopts the following technical scheme:

in a first aspect, an embodiment of the present invention provides a method for acquiring a channel state information report, which is applied to a terminal, and includes:

under the condition that a network configures at least two channel state information reference signals (CSI-RS), acquiring at least one CSI report part corresponding to the CSI-RS;

and obtaining a CSI report of multiple Transmitting and Receiving Points (TRPs) according to at least one CSI report part corresponding to the CSI-RS.

In a second aspect, an embodiment of the present invention further provides a terminal, including:

a first obtaining module, configured to obtain, in a case where a network configures at least two CSI-RS, at least one CSI report portion corresponding to the CSI-RS;

and the second acquisition module is used for acquiring a CSI report of multiple Transmission and Reception Points (TRPs) according to at least one CSI report part corresponding to the CSI-RS.

In a third aspect, an embodiment of the present invention further provides a terminal, including: a memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the method of obtaining a channel state information report as described above.

In a fourth aspect, embodiments of the present invention also provide a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method for obtaining a channel state information report as described above.

The beneficial effects of the invention are as follows:

according to the scheme, under the condition that at least two channel state information reference signals (CSI-RS) are configured by a network, a CSI report part corresponding to at least one CSI-RS is obtained; and obtaining the CSI report of the multiple transmitting and receiving points TRP according to the CSI report part corresponding to at least one CSI-RS. Since the CSI report of the multiple TRP is obtained by combining the CSI report parts corresponding to at least one CSI-RS, that is, the CSI report part to be reported can be selected for combined reporting according to the network indication or the terminal selection mode when the CSI report of the multiple TRP is reported, and multiple CSI reports are not required to be reported, thereby effectively reducing the reporting cost and improving the flexibility of the reporting mode.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

FIG. 1 is a block diagram of a network system to which embodiments of the present invention are applicable;

fig. 2 is a flowchart of a method for acquiring a channel state information report according to an embodiment of the present invention;

FIG. 3 shows a schematic block diagram of a terminal according to an embodiment of the present invention;

fig. 4 shows a block diagram of a terminal according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. "and/or" in the specification and claims means at least one of the connected objects.

The following description provides examples and does not limit the scope, applicability, or configuration as set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the spirit and scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Referring to fig. 1, fig. 1 is a block diagram of a wireless communication system to which an embodiment of the present invention is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may also be referred to as a terminal Device or a User Equipment (UE), and the terminal 11 may be a terminal-side Device such as a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer), a personal digital assistant (Personal Digital Assistant, PDA), a mobile internet Device (Mobile Internet Device, MID), a Wearable Device (Wearable Device), or a vehicle-mounted Device, which is not limited to a specific type of the terminal 11 in the embodiment of the present invention. The network device 12 may be a base station or a core network, where the base station may be a 5G or later version base station (e.g., a gNB, a 5G NR NB, etc.), or a base station in other communication systems (e.g., an eNB, a WLAN access point, or other access points, etc.), where the base station may be referred to as a node B, an evolved node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, or some other suitable terminology in the field, and the base station is not limited to a specific technical vocabulary, and it should be noted that, in the embodiment of the present invention, only the base station in the NR system is exemplified, but not limited to the specific type of the base station.

The present invention will be described in detail below with reference to the drawings and the specific embodiments thereof in order to make the objects, technical solutions and advantages of the present invention more apparent.

As shown in fig. 2, an embodiment of the present invention provides a method for acquiring a channel state information report, which is applied to a terminal, and includes:

step 201: under the condition that at least two channel state information reference signals (CSI-RS) are configured by a network, acquiring at least one CSI report part corresponding to the CSI-RS.

Each of the at least two CSI-RS configures an associated CSI-RS for CSI reporting, where each CSI-RS corresponds to a transmission reception point TRP.

Optionally, the at least two CSI-RS include a first CSI-RS and a second CSI-RS, where the first CSI-RS is a CSI-RS corresponding to a first TRP, and the second CSI-RS is a CSI-RS corresponding to a second TRP.

The following describes a manner of acquiring the first CSI-RS and the second CSI-RS.

The first CSI-RS acquisition mode:

under the condition that at least two CSI report configurations are associated, obtaining a first CSI-RS according to the CSI-RS associated with the first CSI report configuration, wherein the first CSI report configuration is a CSI report configuration corresponding to a first TRP in the at least two CSI report configurations;

Or under the condition that the CSI report configuration is associated with a plurality of CSI-RS resources or resource sets for CSI calculation, obtaining the first CSI-RS according to the plurality of the CSI-RS resources or resource sets, wherein the first CSI-RS is one CSI-RS resource predefined or preconfigured in the plurality of the CSI-RS resources or resource sets.

The second CSI-RS acquisition mode:

under the condition that at least two CSI report configurations are associated, obtaining a second CSI-RS according to the CSI-RS associated with the second CSI report configuration associated with the first CSI report configuration, wherein the second CSI report configuration is a CSI report configuration corresponding to a second TRP in the at least two CSI report configurations; wherein the second CSI report is configured to be periodic, semi-persistent or aperiodic, or the second CSI-RS associated with the second CSI report configuration is periodic, semi-persistent or aperiodic.

Or under the condition that a plurality of CSI-RS resources or resource sets for CSI calculation are associated in the CSI report configuration, obtaining the second CSI-RS according to a third CSI-RS resource or resource set except for the first CSI-RS in the plurality of CSI-RS resources or resource sets, wherein the second CSI-RS is one CSI-RS resource predefined or preconfigured in the third CSI-RS resource or resource set. Wherein at least one CSI-RS resource or set of resources of the plurality of CSI-RS resources or sets of resources is periodic, semi-persistent or aperiodic.

Step 202: and obtaining a CSI report of multiple Transmitting and Receiving Points (TRPs) according to at least one CSI report part corresponding to the CSI-RS.

Specifically, the above-mentioned multi-TRP CSI report may include a non-coherent joint transmission (non-coherent Joint Transmission, NCJT) CSI report and a non-NCJT CSI report, where the multi-TRP CSI report is obtained through a CSI report portion corresponding to each CSI-RS and reported at a corresponding time (where reporting of a periodic CSI (P-CSI) report is configured by RRC, reporting of a PUCCH-based semi-persistent CSI (SP-CSI) report is determined by RRC configuration, PUSCH-based SP-CSI is determined by an activated downlink control information (Downlink Control Information, DCI) indication, and reporting of an aperiodic CSI (AP-CSI) report is determined by triggered DCI). The CSI report of the multiple TRP may include a CSI report portion corresponding to a part of the CSI-RS, and may also include a CSI report portion corresponding to each CSI-RS.

For example, the at least two CSI-RSs include a first CSI-RS and a second CSI-RS, the first TRP uses the first CSI-RS for channel measurement to obtain first information, and the second TRP uses the second CSI-RS for channel measurement to obtain second information. The first information is used as signal information, the second information is used as interference information, a first CSI report part corresponding to the first CSI-RS can be obtained, the first information is used as interference information, and the second information is used as signal information, a second CSI report part corresponding to the second CSI-RS can be obtained.

In the method of the embodiment of the invention, under the condition that a network configures at least two channel state information reference signals (CSI-RS), a CSI report part corresponding to at least one CSI-RS is obtained; and obtaining the CSI report of the multiple transmitting and receiving points TRP according to the CSI report part corresponding to at least one CSI-RS. Since the CSI report of the multiple TRP is obtained by combining the CSI report parts corresponding to at least one CSI-RS, that is, the CSI report part to be reported can be selected for combined reporting according to the network indication or the terminal selection mode when the CSI report of the multiple TRP is reported, and multiple CSI reports are not required to be reported, thereby effectively reducing the reporting cost and improving the flexibility of the reporting mode.

Further, in the case that the at least two CSI-RS include a first CSI-RS and a second CSI-RS, the obtaining, according to the CSI report portion corresponding to the at least one CSI-RS, a CSI report of the multiple transmission reception points TRP includes:

obtaining the multi-TRP CSI report according to at least one of the first CSI report part and the second CSI report part;

the first CSI report part is a CSI report part corresponding to the first CSI-RS; the second CSI report portion is a CSI report portion corresponding to the second CSI-RS.

Wherein the first CSI reporting part or the second CSI reporting part comprises at least one of precoding matrix indicator PMI, rank indicator RI, CSI-RS resource indicator CRI, channel quality indicator CQI, SS/PBCH block resource indicator SSBRI, layer indicator LI, layer 1-reference signal received power L1-RSRP and layer 1-signal to interference plus noise ratio L1-SINR.

As an alternative implementation manner, the first CSI report portion corresponding to the first CSI-RS is used as a multi-TRP CSI report and reported to the first TRP, or the second CSI report portion corresponding to the second CSI-RS is used as a multi-TRP CSI report and reported to the second TRP.

For Non-ideal backhaul (Non-ideal backhaul) and in case of association of at least two CSI reporting configurations, the above-mentioned multi-TRP CSI report includes a first CSI reporting part or a second CSI reporting part, in which case the second CSI-RS is periodic, semi-persistent or aperiodic.

As another alternative implementation manner, the first CSI report portion corresponding to the first CSI-RS and the second CSI report portion corresponding to the second CSI-RS are used as a multi-TRP CSI report, and are reported to the first TRP and/or the second TRP.

In the implementation manner, the first CSI report part and the second CSI report part are reported as the multi-TRP CSI report, so that the report cost can be reduced, the repeated part in the CSI report calculated by the terminal can be reduced, and the occupation of the terminal capability can be effectively reduced.

In case that the multi-TRP CSI report includes a first CSI report portion and a second CSI report portion, an order of the first CSI report portion and the second CSI report portion includes at least one of:

in case of multiple CSI-RS reporting configuration associations, the first CSI reporting part is located before or after the second CSI reporting part;

in case the CSI-RS reporting setting associates multiple CSI-RS resources or resource sets for CSI calculation, the order of the first CSI reporting part and the second CSI reporting part is predefined or preconfigured. The pre-configuration here may be configured by the network device.

For an Ideal backhaul (Ideal backhaul) and in case the CSI reporting configuration associates multiple CSI-RS resources or resource sets for (NCJT) CSI computation, the first CSI reporting part and the second CSI reporting part are reported. The second CSI-RS is periodic, semi-persistent or aperiodic. When the second CSI-RS is not configured or activated by the network, the terminal may not report the current CSI report, and explicitly or implicitly feed back an identifier that the base station cannot perform the calculation of the current CSI report.

For an ideal backhaul, when the terminal reports complete CSI information (a first CSI reporting part and a second CSI reporting part), the report may include a plurality of PMI, RI, CRI, CQI, for each item, taking PMI as an example, an order needs to be defined so that the base station can obtain the part of PMI belonging to itself, and if a plurality of CSI reporting configurations (Reporting Setting) are associated, the first CSI reporting part is located before or after the second CSI reporting part; in the case that the CSI reporting configuration is associated with multiple CSI-RS for CSI (NCJT or non-NCJT) computation, the order of the parts may be determined based on the order of the first CSI-RS and the second CSI-RS configuration, or may be determined based on other predefined manners or the order of the network configurations.

According to the embodiment of the invention, the sequence between the CSI report parts is predefined or preconfigured, that is, the association relation between each TRP and each CSI report part is set, so that each TRP can accurately acquire the corresponding CSI report part.

Further, the acquiring the CSI report portion corresponding to at least one CSI-RS includes:

obtaining at least one of a first CSI report part and a second CSI report part according to the first CSI-RS and a second CSI-RS transmitted last time;

the first CSI-RS is an aperiodic CSI-RS, the second CSI-RS is an aperiodic or semi-persistent CSI-RS, and the last transmission time of the second CSI-RS is no later than the time corresponding to a CSI reference resource or the calculation time of a multi-TRP CSI report, where the CSI reference resource is a CSI reference resource (CSI reference resource) corresponding to an aperiodic multi-TRP CSI report.

Wherein the computation time of the multi-TRP CSI report can be calculated by

Representation of->

And Z' is related to the calculation time of the CSI report of the terminal, and represents the symbol number between the first uplink symbol carrying the CSI report and the last symbol of the latest CSI-RS in the time domain.

Specifically, when an AP-CSI report is triggered, the terminal calculates a multi-TRP CSI report by using an aperiodic first CSI-RS associated with the AP-CSI report and a last transmitted second CSI-RS, and reports the report to the TRP that triggers the report according to the time indicated by the triggered DCI, where the multi-TRP CSI report may include a CSI part (at least one of the PMI, RI, CRI and CQI of the NCJT CSI or the non-NCJT CSI corresponds to one CSI-RS) or complete CSI information (multiple PMI, RI, CRI and CQI).

Note that, when the first CSI-RS and the second CSI-RS are aperiodic CSI-RS, the first slot offset and the second slot offset are the same or different; the first time slot offset is a time slot offset corresponding to the first CSI-RS, and the second time slot offset is a time slot offset corresponding to the second CSI-RS. When the first and second time slots offset are the same, the interval of the first and second CSI-RS within a time slot is predefined or preconfigured. The pre-configuration here may be configured by the network device.

For example, when the first CSI-RS and the second CSI-RS used by the terminal to calculate the CSI report of the multiple TRP are both aperiodic CSI-RS and are associated with multiple Reporting Setting, the first CSI-RS and the second CSI-RS belong to different Reporting Setting, and the CSI-RS trigger offset may be configured differently or the same based on the resource set. If the Reporting Setting is a CSI-RS that associates multiple CSI-RS for multi-TRP CSI calculation, the CSI-RS trigger offset may be different or the same for each CSI-RS or the resource set to which the CSI-RS belongs.

Further, the method for acquiring the channel state information report further comprises the following steps:

the terminal does not expect to occur when the second CSI-RS is periodic or semi-persistent and is not configured or activated.

when the second CSI-RS is periodic or semi-persistent and not activated, performing at least one of:

reporting the multi-TRP CSI report is not performed;

explicitly or implicitly feeding back a preset identifier to the network device, wherein the preset identifier is used for indicating that the terminal cannot perform the multi-TRP CSI report calculation;

updating and feeding back the first CSI reporting part;

and feeding back the second CSI reporting part which is not updated.

Further, after obtaining the CSI report of the multiple transmission and reception points TRP according to the CSI report portion corresponding to each CSI-RS, the method further includes:

reporting the CSI report of multiple TRP.

As an optional implementation manner, the reporting the CSI report of multiple TRPs includes:

reporting the multi-TRP CSI report on a Physical Uplink Shared Channel (PUSCH) according to a spatial relationship parameter corresponding to a first control resource set pool index (CORESET Pool Index) when the multi-TRP CSI report is an aperiodic or semi-persistent CSI report and the PUSCH used by the multi-TRP CSI report is indicated or configured with a plurality of spatial relationship (spatial relationship) parameters; the first control resource set pool index is associated with a control resource set CORESET to which first Downlink Control Information (DCI) belongs, and the first DCI is DCI for activating reporting of the multi-TRP CSI report;

Or when the CSI report of the multi-TRP is a semi-persistent CSI report and a physical uplink shared channel PUSCH of semi-persistent transmission used by the CSI report of the multi-TRP is configured or indicates a plurality of spatial relationship parameters, reporting the CSI report of the multi-TRP by alternately adopting the plurality of spatial relationship parameters on the PUSCH of semi-persistent transmission.

As another optional implementation manner, the reporting the CSI report of the multiple TRPs includes:

reporting the multi-TRP CSI report on a Physical Uplink Control Channel (PUCCH) according to a spatial relationship parameter corresponding to a second control resource set pool index under the condition that the multi-TRP CSI report is a semi-persistent CSI report and the PUCCH used by the multi-TRP CSI report is configured or indicates a plurality of spatial relationship parameters; the second control resource set pool index is associated with a control resource set CORESET to which a second DCI belongs, where the second DCI is DCI corresponding to a media access layer control unit (MAC CE), and the MAC CE is a MAC CE that activates CSI reporting of the multiple TRPs;

or when the CSI report of the multi-TRP is a semi-persistent CSI report and a physical uplink control channel PUCCH of semi-persistent transmission used for the CSI report of the multi-TRP is configured or indicates a plurality of spatial relationship parameters, reporting the CSI report of the multi-TRP by alternately adopting the plurality of spatial relationship parameters on the PUCCH of semi-persistent transmission.

For example, a CSI report of multiple TRPs is reported to a first TRP using a first spatial relationship parameter on a PUCCH transmitted semi-continuously, and then a CSI report of multiple TRPs is reported to a second TRP using a second spatial relationship parameter.

Specifically, for the non-ideal backhaul condition and the terminal needs to report the CSI part to two TRPs, the SP CSI report is triggered at this time, and the CSI part corresponding to the first CSI-RS or the second CSI-RS alternately adopts a plurality of spatial reporting parameters to report the plurality of TRPs. For example, TRP1 uses the spatial relation parameter 1 to report the SP-CSI report on the PUSCH or PUCCH, and TRP2 uses the spatial relation parameter 2 to report the SP-CSI report on the PUSCH or PUCCH.

Wherein the plurality of spatial relationship parameters and the first CSI-RS association are predefined or preconfigured; the plurality of spatial relationship parameters are predefined or preconfigured with the second CSI-RS association. The pre-configuration here may be configured by the network device.

In the embodiment of the invention, the CSI report of the multiple TRPs is obtained by combining the CSI report parts corresponding to at least one CSI-RS, namely, the CSI report parts needing to be reported can be selected for combined reporting according to the network indication or the terminal selection mode when the CSI report of the multiple TRPs is reported, and the multiple CSI reports are not required to be reported, so that the report cost can be effectively reduced, and the flexibility of the reporting mode is improved.

As shown in fig. 3, an embodiment of the present invention further provides a terminal 300, including:

a first obtaining module 301, configured to obtain, in a case where a network configures at least two CSI-RS, a CSI report portion corresponding to at least one CSI-RS;

a second obtaining module 302, configured to obtain a CSI report of multiple transmission and reception points TRP according to at least one CSI report portion corresponding to the CSI-RS.

According to the terminal provided by the embodiment of the invention, at least two CSI-RSs comprise a first CSI-RS and a second CSI-RS;

the second acquisition module is used for obtaining the multi-TRP CSI report according to at least one of the first CSI report part and the second CSI report part;

In the terminal according to the embodiment of the present invention, in the case where the CSI report of the multi-TRP includes a first CSI report part and a second CSI report part, the order of the first CSI report part and the second CSI report part includes at least one of the following:

In case the CSI-RS reporting setting associates multiple CSI-RS resources or resource sets for CSI calculation, the order of the first CSI reporting part and the second CSI reporting part is predefined or preconfigured.

The terminal of the embodiment of the invention is characterized in that the first acquisition module is used for obtaining at least one of a first CSI report part and a second CSI report part according to the first CSI-RS and a second CSI-RS transmitted last time;

the first CSI-RS is an aperiodic CSI-RS, the second CSI-RS is an aperiodic or semi-persistent CSI-RS, and the last transmission time of the second CSI-RS is no later than the time corresponding to the CSI reference resource or the computation time of the CSI report of the multiple TRPs, where the CSI reference resource is an aperiodic CSI reference resource corresponding to the CSI report of the multiple TRPs.

The terminal in the embodiment of the present invention, the first CSI reporting part or the second CSI reporting part includes at least one of precoding matrix indicator PMI, rank indicator RI, CSI-RS resource indicator CRI, channel quality indicator CQI, SS/PBCH block resource indicator SSBRI, layer indicator LI, layer 1-reference signal received power L1-RSRP and layer 1-signal to interference plus noise ratio L1-SINR.

In the terminal of the embodiment of the present invention, when the first CSI-RS and the second CSI-RS are aperiodic CSI-RS, the first time slot offset and the second time slot offset are the same or different; the first time slot offset is a time slot offset corresponding to the first CSI-RS, and the second time slot offset is a time slot offset corresponding to the second CSI-RS.

In the terminal according to the embodiment of the present invention, when the first time slot offset and the second time slot offset are the same, the interval between the first CSI-RS and the second CSI-RS in the time slot is predefined or preconfigured.

The terminal of the embodiment of the invention further comprises:

a processing module, configured to perform at least one of the following operations when the second CSI-RS is periodic or semi-persistent and not activated:

reporting the multi-TRP CSI report is not performed;

updating and feeding back the first CSI reporting part;

and feeding back the second CSI reporting part which is not updated.

The terminal of the embodiment of the invention further comprises:

and the reporting module is used for reporting the multi-TRP CSI report after the second acquisition module obtains the multi-receiving point TRP CSI report according to the CSI report part corresponding to each CSI-RS.

The reporting module is configured to report, when the CSI report of the multiple TRP is an aperiodic or semi-persistent CSI report and a physical uplink shared channel PUSCH used for the CSI report of the multiple TRP is indicated or configured with multiple spatial relationship parameters, the CSI report of the multiple TRP on the PUSCH according to the spatial relationship parameters corresponding to the index of the first control resource set pool; the first control resource set pool index is associated with a control resource set CORESET to which first Downlink Control Information (DCI) belongs, and the first DCI is DCI for activating reporting of the multi-TRP CSI report;

The reporting module is configured to report, when the CSI report of the multiple TRP is a semi-persistent CSI report and a physical uplink control channel PUCCH used for the CSI report of the multiple TRP is configured or indicates multiple spatial relationship parameters, the CSI report of the multiple TRP on the PUCCH according to the spatial relationship parameter corresponding to the second control resource set pool index; the second control resource set pool index is associated with a control resource set CORESET to which a second DCI belongs, the second DCI is DCI corresponding to a MAC CE, and the MAC CE is a MAC CE that activates CSI reporting of the multiple TRPs;

In the terminal of the embodiment of the invention, the association relationship between the plurality of spatial relationship parameters and the first CSI-RS is predefined or preconfigured; the plurality of spatial relationship parameters are predefined or preconfigured with the second CSI-RS association.

In the terminal of the embodiment of the invention, the CSI report of the multiple TRPs is obtained by combining the CSI report parts corresponding to at least one CSI-RS, that is, the CSI report parts needing to be reported can be selected for combined reporting according to the network indication or the terminal selection mode when the CSI report of the multiple TRPs is reported, and the multiple CSI reports are not required to be reported, so that the reporting cost can be effectively reduced, and the flexibility of the reporting mode is improved.

It should be noted that, the terminal embodiment is a terminal corresponding to the method applied to the terminal, and all implementation manners of the method embodiment are applicable to the terminal embodiment, so that the same technical effects as the terminal embodiment can be achieved.

Fig. 4 is a schematic diagram of a hardware structure of a terminal for implementing an embodiment of the present invention.

The terminal 40 includes, but is not limited to: radio frequency unit 410, network module 420, audio output unit 430, input unit 440, sensor 450, display unit 460, user input unit 470, interface unit 480, memory 490, processor 411, and power source 412. Those skilled in the art will appreciate that the terminal structure shown in fig. 4 is not limiting of the terminal and that the terminal may include more or fewer components than shown, or may combine certain components, or a different arrangement of components. In the embodiment of the invention, the terminal comprises, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer and the like.

The processor 411 is configured to obtain, when a network configures at least two CSI-RS, at least one CSI report portion corresponding to the CSI-RS; and obtaining a CSI report of multiple Transmitting and Receiving Points (TRPs) according to at least one CSI report part corresponding to the CSI-RS.

The terminal of the embodiment of the invention can realize all the implementation modes in the embodiment of the method for acquiring the channel state information report applied to the terminal, can achieve the same effect and is not repeated here.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 410 may be configured to receive and send information or signals during a call, specifically, receive downlink data from a network side device, and then process the received downlink data with the processor 411; in addition, the uplink data is sent to the network side equipment. In general, the radio frequency unit 410 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 410 may also communicate with networks and other devices through a wireless communication system.

The terminal provides wireless broadband internet access to the user through the network module 420, such as helping the user to send and receive e-mail, browse web pages, access streaming media, etc.

The audio output unit 430 may convert audio data received by the radio frequency unit 410 or the network module 420 or stored in the memory 490 into an audio signal and output as sound. Also, the audio output unit 430 may also provide audio output (e.g., a call signal reception sound, a message reception sound, etc.) related to a specific function performed by the terminal 40. The audio output unit 430 includes a speaker, a buzzer, a receiver, and the like.

The input unit 440 is used to receive an audio or video signal. The input unit 440 may include a graphics processor (Graphics Processing Unit, GPU) 441 and a microphone 442, the graphics processor 441 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frame may be displayed on the display unit 460. The image frames processed by the graphics processor 441 may be stored in the memory 490 (or other storage medium) or transmitted via the radio frequency unit 410 or the network module 420. The microphone 442 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output that can be transmitted to the mobile communication network side device via the radio frequency unit 410 in the case of a phone call mode.

The terminal 40 also includes at least one sensor 450, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 461 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 461 and/or the backlight when the terminal 40 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and direction when the accelerometer sensor is stationary, and can be used for recognizing the terminal gesture (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking), and the like; the sensor 450 may further include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which are not described herein.

The display unit 460 is used to display information input by a user or information provided to the user. The display unit 460 may include a display panel 461, and the display panel 461 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 470 may be used to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 470 includes a touch panel 471 and other input devices 472. The touch panel 471, also referred to as a touch screen, may collect touch operations thereon or thereabout by a user (e.g., operations of the user on the touch panel 471 or thereabout using any suitable object or accessory such as a finger, stylus, etc.). The touch panel 471 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch azimuth of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 411, and receives and executes commands sent by the processor 411. In addition, the touch panel 471 may be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. The user input unit 470 may include other input devices 472 in addition to the touch panel 471. In particular, other input devices 472 may include, but are not limited to, physical keyboards, function keys (e.g., volume control keys, switch keys, etc.), trackballs, mice, joysticks, and so forth, which are not described in detail herein.

Further, the touch panel 471 may be overlaid on the display panel 461, and when the touch panel 471 detects a touch operation thereon or thereabout, the touch panel 471 is transmitted to the processor 411 to determine the type of touch event, and then the processor 411 provides a corresponding visual output on the display panel 461 according to the type of touch event. Although in fig. 4, the touch panel 471 and the display panel 461 are provided as two separate components to implement the input and output functions of the terminal, in some embodiments, the touch panel 471 may be integrated with the display panel 461 to implement the input and output functions of the terminal, which is not limited herein.

The interface unit 480 is an interface for connecting an external device to the terminal 40. For example, the external devices may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 480 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal 40 or may be used to transmit data between the terminal 40 and an external device.

Memory 490 may be used to store software programs as well as various data. The memory 490 may mainly include a storage program area that may store an operating system, application programs required for at least one function (such as a sound playing function, an image playing function, etc.), and a storage data area; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, memory 490 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.

The processor 411 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by running or executing software programs and/or modules stored in the memory 490 and calling data stored in the memory 490, thereby performing overall monitoring of the terminal. The processor 411 may include one or more processing units; preferably, the processor 411 may integrate an application processor and a modem processor, wherein the application processor primarily handles operating systems, user interfaces, application programs, etc., and the modem processor primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 411.

The terminal 40 may further include a power source 412 (e.g., a battery) for powering the various components, and preferably the power source 412 may be logically coupled to the processor 411 via a power management system that performs functions such as managing charge, discharge, and power consumption.

In addition, the terminal 40 includes some functional modules, which are not shown, and will not be described herein.

Preferably, the embodiment of the present invention further provides a terminal, including: the system comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the computer program realizes each process of the channel state information report acquisition method embodiment applied to the terminal when being executed by the processor, and can achieve the same technical effect, and the repetition is avoided, and the description is omitted here.

The embodiment of the invention also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements each process of the method embodiment of obtaining the channel state information report applied to the terminal, and can achieve the same technical effect, and in order to avoid repetition, the description is omitted here. Wherein the computer readable storage medium is selected from Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk.

While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and changes can be made without departing from the principles of the present invention, and such modifications and changes are intended to be within the scope of the present invention.

Claims

1. The method for acquiring the channel state information report is applied to a terminal and is characterized by comprising the following steps:

obtaining a CSI report of multiple Transmitting and Receiving Points (TRPs) according to at least one CSI report part corresponding to the CSI-RS;

wherein the at least two CSI-RSs include a first CSI-RS and a second CSI-RS, the method further comprising:

taking a first CSI report part corresponding to a first CSI-RS as a multi-TRP CSI report and reporting the same to the first TRP, or taking a second CSI report part corresponding to a second CSI-RS as a multi-TRP CSI report and reporting the same to the second TRP, wherein the first TRP corresponds to the first CSI-RS and the second TRP corresponds to the second CSI-RS;

the obtaining the CSI report portion corresponding to at least one CSI-RS includes:

Obtaining at least one of the first CSI reporting part and the second CSI reporting part according to the first CSI-RS and the second CSI-RS transmitted last time;

the first CSI-RS is an aperiodic CSI-RS, the second CSI-RS is an aperiodic or semi-persistent or periodic CSI-RS, the last transmission time of the second CSI-RS is no later than the time corresponding to a CSI reference resource or the calculation time of the multi-TRP CSI report, and the CSI reference resource is a CSI reference resource corresponding to an aperiodic multi-TRP CSI report;

2. The method of claim 1, wherein the at least two CSI-RS comprise a first CSI-RS and a second CSI-RS;

the obtaining, according to at least one CSI report portion corresponding to the CSI-RS, a CSI report of a plurality of transmission and reception points TRP, includes:

And obtaining the multi-TRP CSI report according to at least one of the first CSI report part and the second CSI report part.

3. The method according to claim 2, wherein, in case the first CSI-RS and the second CSI-RS are aperiodic CSI-RS, the first time slot offset and the second time slot offset are the same or different;

the first time slot offset is a time slot offset corresponding to the first CSI-RS, and the second time slot offset is a time slot offset corresponding to the second CSI-RS.

4. A method according to claim 3, characterized in that the interval of the first CSI-RS and the second CSI-RS within a time slot is predefined or preconfigured when the first time slot offset and the second time slot offset are the same.

5. The method according to claim 2, wherein the method further comprises:

reporting the multi-TRP CSI report is not performed;

Updating and feeding back the first CSI reporting part;

and feeding back the second CSI reporting part which is not updated.

6. The method as recited in claim 1, further comprising:

reporting the multi-TRP CSI report on the PUSCH according to the spatial relationship parameter corresponding to the first control resource set pool index under the condition that the multi-TRP CSI report is an aperiodic or semi-persistent CSI report and a plurality of spatial relationship parameters are indicated or configured by a Physical Uplink Shared Channel (PUSCH) used by the multi-TRP CSI report; the first control resource set pool index is associated with a control resource set CORESET to which first Downlink Control Information (DCI) belongs, and the first DCI is DCI for activating reporting of the multi-TRP CSI report;

7. The method as recited in claim 1, further comprising:

reporting the multi-TRP CSI report on the Physical Uplink Control Channel (PUCCH) according to the spatial relationship parameter corresponding to the second control resource set pool index under the condition that the multi-TRP CSI report is a semi-persistent CSI report and the PUCCH used by the multi-TRP CSI report is configured or indicates a plurality of spatial relationship parameters; the second control resource set pool index is associated with a control resource set CORESET to which a second DCI belongs, where the second DCI is DCI corresponding to a media access layer control unit MAC CE, and the MAC CE is a MAC CE that activates CSI reporting of the multiple TRPs;

8. The method according to claim 6 or 7, wherein the plurality of spatial relationship parameters are predefined or preconfigured with the first CSI-RS association; the plurality of spatial relationship parameters are predefined or preconfigured with the second CSI-RS association.

9. The method of claim 2, wherein the step of determining the position of the substrate comprises,

the first CSI report part comprises first information obtained by measuring the first CSI-RS and second information obtained by measuring the second CSI-RS; or alternatively, the first and second heat exchangers may be,

the second CSI reporting part includes first information obtained by measuring the first CSI-RS and second information obtained by measuring the second CSI-RS.

10. A terminal, comprising:

the first acquisition module is used for acquiring at least one CSI report part corresponding to the CSI-RS under the condition that at least two channel state information reference signals (CSI-RS) are configured by a network, wherein the at least two CSI-RS comprise a first CSI-RS and a second CSI-RS;

A second obtaining module, configured to obtain a CSI report of multiple transmission and reception points TRP according to at least one CSI report portion corresponding to the CSI-RS;

a reporting module, configured to report a first CSI report portion corresponding to a first CSI-RS as a multi-TRP CSI report to a first TRP, or report a second CSI report portion corresponding to a second CSI-RS as a multi-TRP CSI report to a second TRP, where the first TRP corresponds to the first CSI-RS and the second TRP corresponds to the second CSI-RS;

the first acquisition module is configured to obtain at least one of the first CSI reporting portion and the second CSI reporting portion according to the first CSI-RS and the second CSI-RS that were last transmitted;

the first CSI reporting part or the second CSI reporting part comprises at least one of precoding matrix indicator PMI, rank indicator RI, CSI-RS resource indicator CRI, channel quality indicator CQI, SS/PBCH block resource indicator SSBRI, layer indicator LI, layer 1-reference signal received power L1-RSRP and layer 1-signal to interference plus noise ratio L1-SINR.

11. The terminal of claim 10, wherein the at least two CSI-RS comprise a first CSI-RS and a second CSI-RS;

the second acquisition module is configured to obtain the CSI report of the multiple TRPs according to at least one of the first CSI report portion and the second CSI report portion.

12. The terminal of claim 11, wherein a first slot offset and a second slot offset are the same or different in the case where the first CSI-RS and the second CSI-RS are aperiodic CSI-RS;

13. The terminal of claim 12, wherein an interval of the first CSI-RS and the second CSI-RS within a slot is predefined or preconfigured when the first slot offset and the second slot offset are the same.

14. The terminal of claim 11, further comprising:

reporting the multi-TRP CSI report is not performed;

updating and feeding back the first CSI reporting part;

and feeding back the second CSI reporting part which is not updated.

15. The terminal of claim 10, wherein the reporting module is configured to report, when the CSI report of the multiple TRP is an aperiodic or semi-persistent CSI report and a physical uplink shared channel PUSCH used for the CSI report of the multiple TRP is indicated or configured with multiple spatial relationship parameters, the CSI report of the multiple TRP according to the spatial relationship parameters corresponding to the first control resource set pool index; the first control resource set pool index is associated with a control resource set CORESET to which first Downlink Control Information (DCI) belongs, and the first DCI is DCI for activating reporting of the multi-TRP CSI report;

16. The terminal according to claim 10, wherein the reporting module is configured to report, in a case where the CSI report of the multiple TRP is a semi-persistent CSI report and a physical uplink control channel PUCCH used for the CSI report of the multiple TRP is configured or indicates multiple spatial relationship parameters, the CSI report of the multiple TRP according to the spatial relationship parameter corresponding to the second control resource set pool index; the second control resource set pool index is associated with a control resource set CORESET to which a second DCI belongs, where the second DCI is DCI corresponding to a media access layer control unit MAC CE, and the MAC CE is a MAC CE that activates CSI reporting of the multiple TRPs;

17. The terminal according to claim 15 or 16, wherein the plurality of spatial relationship parameters are predefined or preconfigured with the first CSI-RS association; the plurality of spatial relationship parameters are predefined or preconfigured with the second CSI-RS association.

18. The terminal of claim 10, wherein the terminal comprises a base station,

19. A terminal, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor carries out the steps of the method of acquiring a channel state information report according to any one of claims 1 to 9.

20. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the channel state information report acquisition method according to any one of claims 1 to 9.