WO2021204154A1 - Method for acquiring channel state information report, and terminal - Google Patents

Abstract

Provided are a method for acquiring a channel state information report, and a terminal, which relate to the technical field of communications. The method of the present invention comprises: when a network is configured with at least two channel state information reference signals (CSI-RSs), acquiring a CSI report part corresponding to at least one of the CSI-RSs; and obtaining a CSI report of a multi-transmission reception point (TRP) according to the CSI report part corresponding to at least one of the CSI-RSs.

Description

Method and terminal for acquiring channel state information report

Cross-references to related applications

This application claims the priority of Chinese Patent Application No. 202010281541.1 filed in China on April 10, 2020, the entire content of which is incorporated herein by reference.

Technical field

The present invention relates to the field of communication technology, and in particular to a method and terminal for obtaining a channel state information report.

Background technique

When a network device communicates with a terminal device, it can use multi-TRP (Transmission Reception Point) technology to increase the reliability and throughput of transmission. For example, the terminal device can receive the same data from multiple TRPs to increase the reliability of transmission, and the terminal device can also receive different data from multiple TRPs to increase the transmission throughput.

Generally, in a multi-TRP scenario, a terminal device needs to measure channel state information (CSI) of multiple TRPs, and report a CSI report to the network device. Specifically, the network device can configure the CSI report configuration and the CSI resource configuration for the terminal device. The terminal device can measure the CSI of multiple TRPs according to the CSI report configuration and the CSI resource configuration, and report the CSI report. The network side according to the CSI report fed back by the UE (CSI report) determines the UE’s multi-TRP transmission mode, for example, Dynamic Point Selection (DPS) transmission can select only one TRP from multiple TRPs to transmit data to the User Equipment (UE, also called terminal), Non-coherent joint transmission (NC-JT) uses two TRPs to send data on resources with the same frequency at the same time. However, the CSI report calculation methods corresponding to these two transmission methods are quite different. Existing protocols need to configure independent CSI reports for NC-JT and non-NC-JT situations. For a potential NC-JT terminal, four CSI reports need to be calculated and reported, which increases the reporting overhead.

Summary of the invention

The embodiment of the present invention provides a method and a terminal for obtaining a channel state information report, so as to solve the problem of relatively large reporting overhead in the calculation method of the CSI report of multiple TRPs in related technologies.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

In the 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:

In the case where the network configures at least two channel state information reference signals CSI-RS, acquiring at least one CSI report part corresponding to the CSI-RS;

According to the CSI report part corresponding to at least one of the CSI-RS, the CSI report of the TRP of the multi-transmitting and receiving point is obtained.

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

The first acquiring module is configured to acquire at least one CSI report part corresponding to the CSI-RS when the network configures at least two channel state information reference signals CSI-RS;

The second acquiring module is configured to obtain the CSI report of the TRP of the multi-transmitting and receiving point according to the CSI report part corresponding to at least one of the CSI-RSs.

In a third aspect, an embodiment of the present invention also provides a terminal, including: a memory, a processor, and a computer program stored in the memory and capable of running on the processor. When the computer program is executed by the processor, the implementation is as described above. The steps of the method for obtaining the channel state information report described above.

In a fourth aspect, an embodiment of the present invention also provides a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the above-mentioned channel state information report is implemented. Get the steps of the method.

The beneficial effects of the present invention are:

In the above solution, when the network configures at least two channel state information reference signals CSI-RS, the CSI report part corresponding to at least one CSI-RS is obtained; and the multiple transmission and reception points are obtained according to the CSI report part corresponding to the at least one CSI-RS TRP’s CSI report. Since the CSI report of multiple TRPs is obtained by combining the CSI report parts corresponding to at least one CSI-RS, that is, when reporting the CSI report of multiple TRPs, the CSI report parts that need to be reported can be selected for combined reporting according to the network indication or the method selected by the terminal. There is no need to report multiple CSI reports, thereby effectively reducing reporting overhead and improving the flexibility of reporting methods.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the following will briefly introduce the drawings used in the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative labor.

Figure 1 is a structural diagram of a network system applicable to an embodiment of the present invention;

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

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

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

Detailed ways

Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although the drawings show exemplary embodiments of the present invention, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

The terms "first", "second", etc. in the specification and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those clearly listed. Those steps or units may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment. In the description and claims, "and/or" means at least one of the connected objects.

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

Please refer to FIG. 1, which shows a block diagram of a wireless communication system to which an embodiment of the present invention can be applied. The wireless communication system includes a terminal 11 and a network device 12. Among them, the terminal 11 may also be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 may be a mobile phone, a tablet (Personal Computer), a laptop (Laptop Computer), or a personal digital assistant (Personal Digital Assistant). , PDA), mobile Internet device (Mobile Internet Device, MID), wearable device (Wearable Device) or in-vehicle equipment and other terminal side devices, it should be noted that the specific type of terminal 11 is not limited in the embodiment of the present invention . The network device 12 may be a base station or a core network, where the above-mentioned base station may be a base station of 5G and later versions (for example: gNB, 5G NR NB, etc.), or a base station in other communication systems (for example: eNB, WLAN access point, Or other access points, etc.), where the base station can be called Node B, Evolved Node B, Access Point, Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (Basic Service Set) Service Set (BSS), Extended Service Set (ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN Access Point, WiFi Node, or in the field For some other suitable terminology, as long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiment of the present invention, only the base station in the NR system is taken as an example, but it does not limit the base station. Specific type.

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

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: When the network configures at least two channel state information reference signals CSI-RS, obtain at least one CSI report part corresponding to the CSI-RS.

Each of the aforementioned at least two CSI-RS configures an associated CSI-RS for channel measurement for a CSI report, and each of the CSI-RS corresponds to a transmission and reception point TRP.

Optionally, the aforementioned at least two CSI-RSs include a first CSI-RS and a second CSI-RS, the first CSI-RS is the CSI-RS corresponding to the first TRP, and the second CSI-RS is the first CSI-RS. 2. CSI-RS corresponding to TRP.

The following describes how to acquire the first CSI-RS and the second CSI-RS.

How to obtain the first CSI-RS:

In the case where at least two CSI report configurations are associated, the first CSI-RS is obtained according to the CSI-RS associated with the first CSI report configuration, where the first CSI report configuration is in the at least two CSI report configurations CSI report configuration corresponding to the first TRP;

Alternatively, in the case that the CSI report configuration is associated with multiple CSI-RS resources or resource sets for CSI calculation, the first CSI-RS is obtained according to the multiple CSI-RS resources or resource sets, and the first CSI-RS is A CSI-RS is one CSI-RS resource predefined or pre-configured in a plurality of the CSI-RS resources or resource sets.

How to obtain the second CSI-RS:

In the case where at least two CSI report configurations are associated, the second CSI-RS is obtained according to the CSI-RS associated with the second CSI report configuration associated with the first CSI report configuration, where the second CSI report configuration Is the CSI report configuration corresponding to the second TRP in the at least two CSI report configurations; wherein the second CSI report configuration is periodic, semi-persistent, or aperiodic, or the second CSI report configuration associated with the second CSI report configuration RS is periodic, semi-continuous or aperiodic.

Or, in the case where the CSI report configuration is associated with multiple CSI-RS resources or resource sets used for CSI calculation, according to the multiple CSI-RS resources or resource sets, a third CSI-RS other than the first CSI-RS is used. RS resource or resource set to obtain the second CSI-RS, where the second CSI-RS is a CSI-RS resource predefined or pre-configured in the third CSI-RS resource or resource set. Wherein, at least one CSI-RS resource or resource set in the plurality of CSI-RS resources or resource sets is periodic, semi-persistent or aperiodic.

Step 202: Obtain the CSI report of the TRP of the multi-transmitting and receiving point according to the CSI report part corresponding to at least one of the CSI-RSs.

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

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

In the method of the embodiment of the present invention, when the network configures at least two channel state information reference signals CSI-RS, the CSI report part corresponding to at least one CSI-RS is obtained; and the CSI report part corresponding to the at least one CSI-RS is obtained. Send more CSI reports for the TRP of the receiving point. Since the CSI report of multiple TRPs is obtained by combining the CSI report parts corresponding to at least one CSI-RS, that is, when reporting the CSI report of multiple TRPs, the CSI report parts that need to be reported can be selected for combined reporting according to the network indication or the method selected by the terminal. There is no need to report multiple CSI reports, thereby effectively reducing reporting overhead and improving the flexibility of reporting methods.

Further, in the case where the at least two CSI-RSs include a first CSI-RS and a second CSI-RS, the CSI report part corresponding to the at least one CSI-RS is obtained to obtain the CSI of the TRP of the multiple transmission and reception points Report, including:

Obtaining the CSI report of the multi-TRP 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 part is a CSI report part corresponding to the second CSI-RS.

Wherein, the first CSI report part or the second CSI report part includes 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, At least one of layer 1-reference signal received power L1-RSRP and layer 1-signal to interference plus noise ratio L1-SINR.

As an optional implementation manner, the first CSI report part 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 part corresponding to the second CSI-RS is used as The CSI report of multiple TRPs is reported to the second TRP.

For non-ideal backhaul and when at least two CSI report configurations are associated, the above-mentioned multi-TRP CSI report includes the first CSI report part or the second CSI report part. In this case, the second CSI report -RS is periodic, semi-continuous or aperiodic.

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

In this implementation, the first CSI report part and the second CSI report part are reported as multi-TRP CSI reports. In addition to reducing the reporting overhead, the terminal can also reduce the repetitive part of the CSI report calculated by the terminal, and effectively reduce the terminal capability. Occupied.

In the case that the CSI report of the multi-TRP includes a first CSI report part and a second CSI report part, the sequence of the first CSI report part and the second CSI report part includes at least one of the following:

When multiple CSI-RS report configurations are associated, the first CSI report part is located before or after the second CSI report part;

In the case where the CSI-RS report setting is associated with multiple CSI-RS resources or resource sets used for CSI calculation, the order of the first CSI report part and the second CSI report part is pre-defined or pre-configured. The pre-configuration here can be configured by a network device.

For an ideal backhaul (Ideal backhaul) and when the CSI report configuration is associated with multiple CSI-RS resources or resource sets for (NCJT) CSI calculation, the first CSI report part and the second CSI report 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 to the base station an identifier that the current CSI report calculation cannot be performed.

For an ideal backhaul, when the terminal reports complete CSI information (the first CSI report part and the second CSI report part), the report will contain multiple PMI, RI, CRI, and CQI. For each item, taking PMI as an example, it needs to be defined An order enables the base station to obtain its own part of the PMI. If multiple CSI report configurations (Reporting Settings) are associated, the first CSI report part is located before or after the second CSI report part; if there are multiple CSI report configurations associated In the case of a CSI-RS used for CSI (NCJT or non-NCJT) calculation, the order of each part can be determined based on the sequence of the first CSI-RS and the second CSI-RS configuration, or it can be based on other predefined methods or networks The order of configuration is determined.

In the embodiment of the present invention, by pre-defining or pre-configuring the sequence between the various CSI report parts, that is, the association relationship between each TRP and each CSI report part is set, so that each TRP can accurately obtain the corresponding The CSI report section.

Further, the acquiring at least one CSI report part corresponding to the 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 the second CSI-RS transmitted last time;

Wherein, the first CSI-RS is an aperiodic CSI-RS, the second CSI-RS is an aperiodic or semi-continuous CSI-RS, and the latest transmission time of the second CSI-RS is no later than the CSI reference The time corresponding to the resource may be no later than the calculation time of the multi-TRP CSI report, and the CSI reference resource is a CSI reference resource (CSI reference resource) corresponding to the aperiodic multi-TRP CSI report.

表示，其中

表示一个时隙slot内的符号symbol数，Z'与终端CSI报告计算时间相关，表示时域上第一个承载CSI报告的上行符号与最新的CSI-RS的最后一个符号之间的symbol数。 Among them, the calculation time of the above-mentioned multi-TRP CSI report can be determined by

Means where

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

Specifically, when an AP-CSI report is triggered, the terminal uses the aperiodic first CSI-RS associated with the AP-CSI report and the last transmitted second CSI-RS to jointly calculate the CSI report of multiple TRPs, and calculates the CSI report of multiple TRPs according to the triggered The report is reported to the TRP that triggered the report at the time indicated by the DCI, where the CSI report of multiple TRPs may include at least one of the CSI part (NCJT CSI or non-NCJT CSI corresponding to PMI, RI, CRI, and CQI of a CSI-RS) ) Or contains complete CSI information (multiple PMI, RI, CRI and CQI).

It should be noted 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; where One time slot offset is the time slot offset corresponding to the first CSI-RS, and the second time slot offset is the time slot offset corresponding to the second CSI-RS. When the offset of the first time slot and the offset of the second time slot are the same, the interval between the first CSI-RS and the second CSI-RS in the time slot is pre-defined or pre-configured. The pre-configuration here can be configured by a network device.

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

Further, the method for acquiring the channel state information report further includes:

The terminal does not expect that the second CSI-RS is periodic or semi-persistent and is not configured or activated.

Further, the method for acquiring the channel state information report further includes:

When the second CSI-RS is periodic or semi-persistent and is not activated, perform at least one of the following operations:

Do not report the CSI report of the multiple TRPs;

Explicitly or implicitly feed back a preset identifier to the network device, where the preset identifier is used to indicate that the terminal cannot perform the multi-TRP CSI report calculation;

Update and feed back the first CSI report part;

Feed back the part of the second CSI report that has not been updated.

Further, after the CSI report of the TRP of the TRP is obtained according to the CSI report part corresponding to each CSI-RS, the method further includes:

Report the CSI report of multiple TRPs.

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

In the case that the CSI report of the multi-TRP is an aperiodic or semi-persistent CSI report, and the physical uplink shared channel PUSCH used by the CSI report of the multi-TRP is indicated or configured with multiple spatial relation parameters, according to The spatial relationship parameter corresponding to the first control resource pool index (CORESET Pool Index) reports the multi-TRP CSI report on the PUSCH; wherein the first control resource pool index and the first downlink control information DCI belong to Is associated with the control resource set CORESET of, and the first DCI is the DCI reported by the CSI report that activates the multi-TRP;

Or, in the case where the CSI report of the multi-TRP is a semi-persistent CSI report, and the physical uplink shared channel PUSCH for semi-persistent transmission used by the CSI report of the multi-TRP is configured or indicates multiple spatial relationship parameters, Multiple spatial relationship parameters are alternately used to report the multi-TRP CSI report on the continuously transmitted PUSCH.

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

In the case that the CSI report of the multiple TRP is a semi-persistent CSI report, and the physical uplink control channel PUCCH used by the CSI report of the multiple TRP is configured or indicates multiple spatial relationship parameters, according to the second control resource set pool index The corresponding spatial relationship parameter is to report the CSI report of the multi-TRP on PUCCH; wherein, the second control resource set pool index is associated with the control resource set CORESET to which the second DCI belongs, and the second DCI is related to the media DCI corresponding to the access layer control unit (MAC CE), where the MAC CE is the MAC CE that activates the CSI report of the multi-TRP;

Or, in the case that the CSI report of the multi-TRP is a semi-persistent CSI report, and the physical uplink control channel PUCCH used for the semi-persistent transmission of the CSI report of the multi-TRP is configured or indicates multiple spatial relationship parameters, in the case of the semi-persistent CSI report, Multiple spatial relationship parameters are alternately used to report the multi-TRP CSI report on the continuously transmitted PUCCH.

For example, on the PUCCH of semi-continuous transmission, the first spatial relationship parameter is first used to report the multi-TRP CSI report to the first TRP, and then the second spatial relationship parameter is used to report the multi-TRP CSI report to the second TRP.

Specifically, for non-ideal backhaul situations and the terminal needs to report CSI parts 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 multiple spatial relation parameters Report to multiple 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 multiple spatial relationship parameters and the first CSI-RS association relationship are predefined or pre-configured; the multiple spatial relationship parameters and the second CSI-RS association relationship are predefined or pre-configured of. The pre-configuration here can be configured by a network device.

In the embodiment of the present invention, since the CSI report of multiple TRPs is obtained by combining the CSI report parts corresponding to at least one CSI-RS, that is, when reporting the CSI report of multiple TRPs, the CSI to be reported can be selected according to the network indication or the method selected by the terminal. The report part is combined and reported without the need to report multiple CSI reports, which can effectively reduce the reporting overhead and increase the flexibility of the reporting method.

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

The first acquiring module 301 is configured to acquire at least one CSI report part corresponding to the CSI-RS when the network is configured with at least two channel state information reference signals CSI-RS;

The second obtaining module 302 is configured to obtain the CSI report of the TRP of the multi-transmitting and receiving point according to the CSI report part corresponding to at least one of the CSI-RSs.

In the terminal of the embodiment of the present invention, the at least two CSI-RSs include a first CSI-RS and a second CSI-RS;

The second obtaining module is configured to obtain the CSI report of the multi-TRP 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 part is a CSI report part corresponding to the second CSI-RS.

In the terminal of the embodiment of the present invention, in the case that the CSI report of the multiple TRP includes a first CSI report part and a second CSI report part, the sequence of the first CSI report part and the second CSI report part includes the following At least one:

When multiple CSI-RS report configurations are associated, the first CSI report part is located before or after the second CSI report part;

In the case where the CSI-RS report setting is associated with multiple CSI-RS resources or resource sets used for CSI calculation, the order of the first CSI report part and the second CSI report part is pre-defined or pre-configured.

In the terminal of the embodiment of the present invention, the first obtaining module is configured to obtain at least one of the first CSI report part and the second CSI report part according to the first CSI-RS and the last transmitted second CSI-RS item;

Wherein, the first CSI-RS is an aperiodic CSI-RS, the second CSI-RS is an aperiodic or semi-continuous CSI-RS, and the latest transmission time of the second CSI-RS is no later than the CSI reference The time corresponding to the resource may be no later than the calculation time of the multi-TRP CSI report, and the CSI reference resource is the CSI reference resource corresponding to the aperiodic multi-TRP CSI report.

In the terminal of the embodiment of the present invention, the first CSI report part or the second CSI report part includes a precoding matrix indicator PMI, a rank indicator RI, a CSI-RS resource indicator CRI, a channel quality indicator CQI, and an SS/PBCH block resource indicator SSBRI , At least one of layer indication 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 slot offset and the second slot offset are the same or different; where , The first time slot offset is the time slot offset corresponding to the first CSI-RS, and the second time slot offset is the time slot offset corresponding to the second CSI-RS.

In the terminal of the embodiment of the present invention, when the first time slot offset is the same as the second time slot offset, the interval between the first CSI-RS and the second CSI-RS in the time slot is predefined Or pre-configured.

The terminal of the embodiment of the present invention further includes:

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

Do not report the CSI report of the multiple TRPs;

Explicitly or implicitly feed back a preset identifier to the network device, where the preset identifier is used to indicate that the terminal cannot perform the multi-TRP CSI report calculation;

Update and feed back the first CSI report part;

Feed back the part of the second CSI report that has not been updated.

The terminal of the embodiment of the present invention further includes:

The reporting module is used for the second acquiring module to report the CSI report of the multi-TRP after obtaining the CSI report of the TRP of the multi-transmitting and receiving point according to the CSI report part corresponding to each CSI-RS.

In the terminal of the embodiment of the present invention, the reporting module is used for when the CSI report of the multiple TRPs is an aperiodic or semi-persistent CSI report, and the physical uplink shared channel PUSCH used by the CSI report of the multiple TRPs is indicated or configured more frequently. In the case of two spatial relationship parameters, the multi-TRP CSI report is reported on the PUSCH according to the spatial relationship parameter corresponding to the first control resource set pool index; wherein, the first control resource set pool index and the first downlink The control information DCI is associated with the control resource set CORESET to which the control information DCI belongs, and the first DCI is the DCI reported by the CSI report that activates the multi-TRP;

Or, in the case where the CSI report of the multi-TRP is a semi-persistent CSI report, and the physical uplink shared channel PUSCH for semi-persistent transmission used by the CSI report of the multi-TRP is configured or indicates multiple spatial relationship parameters, Multiple spatial relationship parameters are alternately used to report the multi-TRP CSI report on the continuously transmitted PUSCH.

In the terminal of the embodiment of the present invention, the reporting module is used for the CSI report of the multiple TRPs as a semi-persistent CSI report, and the physical uplink control channel PUCCH used by the CSI report of the multiple TRPs is configured or indicates multiple spatial relationships In the case of parameters, report the multi-TRP CSI report on PUCCH according to the spatial relationship parameter corresponding to the second control resource set pool index; wherein, the second control resource set pool index and the control resource to which the second DCI belongs Set CORESET to be associated, the second DCI is the DCI corresponding to the MAC CE, and the MAC CE is the MAC CE that activates the CSI report of the multi-TRP;

Or, in the case that the CSI report of the multi-TRP is a semi-persistent CSI report, and the physical uplink control channel PUCCH used for the semi-persistent transmission of the CSI report of the multi-TRP is configured or indicates multiple spatial relationship parameters, in the case of the semi-persistent CSI report, Multiple spatial relationship parameters are alternately used to report the multi-TRP CSI report on the continuously transmitted PUCCH.

In the terminal of the embodiment of the present invention, the multiple spatial relationship parameters and the first CSI-RS association relationship are predefined or pre-configured; the multiple spatial relationship parameters and the second CSI-RS association relationship are predefined Or pre-configured.

In the terminal of the embodiment of the present invention, since the CSI report of multiple TRPs is obtained by combining the CSI report parts corresponding to at least one CSI-RS, that is, when reporting the CSI report of multiple TRPs, the CSI report of multiple TRPs can be selected according to the network indication or the method selected by the terminal. The CSI report part is combined and reported without the need to report multiple CSI reports, which can effectively reduce the reporting overhead and increase the flexibility of the reporting method.

It should be noted that this terminal embodiment is a terminal corresponding to the above-mentioned method applied to the terminal, and all the implementation manners of the above-mentioned method embodiment are applicable to this terminal embodiment and can achieve the same technical effect.

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

The terminal 40 includes, but is not limited to: a radio frequency unit 410, a network module 420, an audio output unit 430, an input unit 440, a sensor 450, a display unit 460, a user input unit 470, an interface unit 480, a memory 490, a processor 411, and a power supply 412 and other parts. Those skilled in the art can understand that the terminal structure shown in FIG. 4 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine some components, or arrange different components. In the embodiment of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

The processor 411 is configured to obtain at least one CSI report part corresponding to the CSI-RS when the network configures at least two channel state information reference signals CSI-RS; according to the CSI corresponding to the at least one CSI-RS In the report part, the CSI report of the TRP of the multi-transmitting and receiving point is obtained.

In the terminal of the embodiment of the present invention, since the CSI report of multiple TRPs is obtained by combining the CSI report parts corresponding to at least one CSI-RS, that is, when reporting the CSI report of multiple TRPs, the CSI report of multiple TRPs can be selected according to the network indication or the method selected by the terminal. The CSI report part is combined and reported without the need to report multiple CSI reports, which can effectively reduce the reporting overhead and increase the flexibility of the reporting method.

The terminal of the embodiment of the present invention can implement all the implementation manners in the embodiment of the method for obtaining the channel state information report applied to the terminal, and can achieve the same effect, which will not be repeated here.

It should be understood that, in this embodiment of the present invention, the radio frequency unit 410 can be used for receiving and sending signals during the process of sending and receiving information or talking. Specifically, after receiving the downlink data from the network side device, it is processed by the processor 411; in addition, , Send the uplink data to the network side device. Generally, 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 can also communicate with the network and other devices through a wireless communication system.

The terminal provides users with wireless broadband Internet access through the network module 420, such as helping users to send and receive emails, browse web pages, and access streaming media.

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

The input unit 440 is used to receive audio or video signals. The input unit 440 may include a graphics processing unit (GPU) 441 and a microphone 442. The graphics processor 441 is configured to respond to still pictures or video images obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. Data is processed. The processed image frame may be displayed on the display unit 460. The image frame processed by the graphics processor 441 may be stored in the memory 490 (or other storage medium) or sent via the radio frequency unit 410 or the network module 420. The microphone 442 can receive sound, and can process such sound into audio data. The processed audio data can be converted into a format that can be sent to the mobile communication network side device via the radio frequency unit 410 for output in the case of a telephone 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. The ambient light sensor can adjust the brightness of the display panel 461 according to the brightness of the ambient light. The proximity sensor can close the display panel 461 and/or when the terminal 40 is moved to the ear. Or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three-axis), and can detect the magnitude and direction of gravity when stationary, and can be used to identify terminal gestures (such as horizontal and vertical screen switching, related games, Magnetometer attitude calibration), vibration recognition related functions (such as pedometer, percussion), etc.; sensor 450 can also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared Sensors, etc., will not be repeated here.

The display unit 460 is used to display information input by the 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 (LCD), an organic light-emitting diode (OLED), etc.

The user input unit 470 may be used to receive inputted numeric or character information, and generate key signal input 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 called a touch screen, can collect user touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc.) on the touch panel 471 or near the touch panel 471. operate). The touch panel 471 may include two parts, a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch position, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it To the processor 411, the command sent by the processor 411 is received and executed. In addition, the touch panel 471 can be implemented in multiple types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 471, the user input unit 470 may also include other input devices 472. Specifically, other input devices 472 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick, which will not be repeated here.

Further, the touch panel 471 can cover the display panel 461. When the touch panel 471 detects a touch operation on or near it, it transmits it to the processor 411 to determine the type of the touch event, and then the processor 411 determines the type of the touch event according to the touch The type of event provides corresponding visual output on the display panel 461. Although in FIG. 4, the touch panel 471 and the display panel 461 are used as two independent components to implement the input and output functions of the terminal, in some embodiments, the touch panel 471 and the display panel 461 may be integrated Realize the input and output functions of the terminal, the specifics are not limited here.

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

The memory 490 may be used to store software programs and various data. The memory 490 may mainly include a program storage area and a data storage area. The program storage area may store an operating system, an application program required by at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data created by the use of mobile phones (such as audio data, phone book, etc.), etc. In addition, the memory 490 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.

The processor 411 is the control center of the terminal. It uses various interfaces and lines to connect various parts of the entire terminal. Various functions of the terminal and processing data, so as to monitor the terminal as a whole. The processor 411 may include one or more processing units; preferably, the processor 411 may integrate an application processor and a modem processor, where the application processor mainly processes the operating system, user interface, and application programs. The processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 411.

The terminal 40 may also include a power source 412 (such as a battery) for supplying power to various components. Preferably, the power source 412 may be logically connected to the processor 411 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system. Function.

In addition, the terminal 40 includes some functional modules not shown, which will not be repeated here.

Preferably, the embodiment of the present invention further provides a terminal, including: a memory, a processor, and a computer program stored in the memory and running on the processor, and the computer program is executed by the processor to realize the channel state applied to the terminal Each process of the embodiment of the method for obtaining an information report can achieve the same technical effect. In order to avoid repetition, details are not repeated here.

The embodiment of the present invention also provides a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, each process of the method for obtaining a channel state information report applied to a terminal is implemented. , And can achieve the same technical effect, in order to avoid repetition, I will not repeat them here. Wherein, the computer-readable storage medium, such as read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk, or optical disk, etc.

It can be understood that the embodiments described in the present disclosure can be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, modules, units, sub-modules, sub-units, etc. can be implemented in one or more application specific integrated circuits (ASICs), digital signal processors (Digital Signal Processing, DSP), digital signal processing equipment ( DSP Device, DSPD), Programmable Logic Device (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, Other electronic units or combinations thereof that perform the functions described in this application.

The above are the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, a number of improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications are also included in the present invention. Within the scope of protection of the invention.

Claims (28)

A method for obtaining a channel state information report, applied to a terminal, includes: In the case where the network configures at least two channel state information reference signals CSI-RS, acquiring at least one CSI report part corresponding to the CSI-RS; According to the CSI report part corresponding to at least one of the CSI-RS, the CSI report of the TRP of the multi-transmitting and receiving point is obtained. The method according to claim 1, wherein the at least two CSI-RS include a first CSI-RS and a second CSI-RS; The obtaining the CSI report of the TRP of the multi-transmitting and receiving point according to the CSI report part corresponding to at least one of the CSI-RS includes: Obtaining the CSI report of the multi-TRP 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 part is a CSI report part corresponding to the second CSI-RS. The method according to claim 2, wherein, in the case that the CSI report of the multi-TRP includes the first CSI report part and the second CSI report part, the first CSI report part and the second CSI report part 2. The sequence of the CSI report part includes at least one of the following: When multiple CSI-RS report configurations are associated, the first CSI report part is located before or after the second CSI report part; In the case that the CSI-RS report setting is associated with multiple CSI-RS resources or resource sets used for CSI calculation, the order of the first CSI report part and the second CSI report part is predefined or pre-configured of. The method according to claim 2, wherein said acquiring at least one CSI report part corresponding to said CSI-RS comprises: Obtaining at least one of the first CSI report part and the second CSI report part according to the first CSI-RS and the most recently transmitted second CSI-RS; Wherein, the first CSI-RS is an aperiodic CSI-RS, the second CSI-RS is an aperiodic or semi-continuous CSI-RS, and the latest transmission time of the second CSI-RS is no later than The time corresponding to the CSI reference resource or not later than the calculation time of the CSI report of the multi-TRP, and the CSI reference resource is the CSI reference resource corresponding to the aperiodic multi-TRP CSI report. The method according to claim 2, wherein the first CSI report part or the second CSI report part includes precoding matrix indicator PMI, rank indicator RI, CSI-RS resource indicator CRI, channel quality indicator CQI, SS/PBCH At least one of the block resource indicator SSBRI, the layer indicator LI, the layer 1-reference signal received power L1-RSRP, and the layer 1-signal to interference plus noise ratio L1-SINR. The method according to claim 2, wherein, 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 Wherein, 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. The method according to claim 6, wherein when the offset of the first time slot and the offset of the second time slot are the same, the difference between the first CSI-RS and the second CSI-RS in the time slot The interval is pre-defined or pre-configured. The method according to claim 2, further comprising: When the second CSI-RS is periodic or semi-persistent and is not activated, perform at least one of the following operations: Do not report the CSI report of the multiple TRPs; Explicitly or implicitly feed back a preset identifier to the network device, where the preset identifier is used to indicate that the terminal cannot perform the multi-TRP CSI report calculation; Update and feed back the first CSI report part; Feed back the part of the second CSI report that has not been updated. The method according to claim 2, wherein, after obtaining the CSI report of the TRP from the at least one CSI-RS corresponding to the at least one CSI-RS, the method further comprises: Report the CSI report of the multiple TRPs. The method according to claim 9, wherein said reporting said multi-TRP CSI report comprises: When the CSI report of the multi-TRP is an aperiodic or semi-persistent CSI report, and the physical uplink shared channel PUSCH used by the CSI report of the multi-TRP is indicated or configured with multiple spatial relationship parameters, according to the first control resource The spatial relationship parameter corresponding to the set pool index is reported on the PUSCH for the multi-TRP CSI report; wherein, the first control resource set pool index is associated with the control resource set CORESET to which the first downlink control information DCI belongs , The first DCI is the DCI reported by the CSI report that activates the multi-TRP; Or, in the case where the CSI report of the multi-TRP is a semi-persistent CSI report, and the physical uplink shared channel PUSCH for semi-persistent transmission used by the CSI report of the multi-TRP is configured or indicates multiple spatial relationship parameters, Multiple spatial relationship parameters are alternately used to report the multi-TRP CSI report on the continuously transmitted PUSCH. The method according to claim 9, wherein said reporting said multi-TRP CSI report comprises: In the case that the CSI report of the multi-TRP is a semi-persistent CSI report, and the physical uplink control channel PUCCH used by the CSI report of the multi-TRP is configured or indicates multiple spatial relationship parameters, according to the second control resource set pool index The corresponding spatial relationship parameter is to report the CSI report of the multi-TRP on the PUCCH; wherein the second control resource set pool index is associated with the control resource set CORESET to which the second DCI belongs, and the second DCI is The DCI corresponding to the MAC CE of the media access layer control unit, where the MAC CE is the MAC CE that activates the CSI report of the multi-TRP; Or, in the case that the CSI report of the multi-TRP is a semi-persistent CSI report, and the physical uplink control channel PUCCH used for the semi-persistent transmission of the CSI report of the multi-TRP is configured or indicates multiple spatial relationship parameters, in the case of the semi-persistent CSI report, Multiple spatial relationship parameters are alternately used to report the multi-TRP CSI report on the continuously transmitted PUCCH. The method according to claim 10 or 11, wherein the multiple spatial relationship parameters and the first CSI-RS association relationship are predefined or pre-configured; the multiple spatial relationship parameters are related to the The second CSI-RS association relationship is predefined or pre-configured. A terminal, including: The first acquiring module is configured to acquire at least one CSI report part corresponding to the CSI-RS when the network configures at least two channel state information reference signals CSI-RS; The second acquiring module is configured to obtain the CSI report of the TRP of the multi-transmitting and receiving point according to the CSI report part corresponding to at least one of the CSI-RS. The terminal according to claim 13, wherein the at least two CSI-RS include a first CSI-RS and a second CSI-RS; The second obtaining module is configured to obtain the CSI report of the multi-TRP 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 part is a CSI report part corresponding to the second CSI-RS. The terminal according to claim 14, wherein, in a case where the CSI report of the multi-TRP includes a first CSI report part and a second CSI report part, the first CSI report part and the second CSI report part The order includes at least one of the following: When multiple CSI-RS report configurations are associated, the first CSI report part is located before or after the second CSI report part; In the case that the CSI-RS report setting is associated with multiple CSI-RS resources or resource sets used for CSI calculation, the order of the first CSI report part and the second CSI report part is predefined or pre-configured of. The terminal according to claim 14, wherein the first obtaining module is configured to obtain the first CSI report part and the last transmitted CSI-RS according to the first CSI-RS and the second CSI-RS transmitted last time. At least one item in the second CSI report part; Wherein, the first CSI-RS is an aperiodic CSI-RS, the second CSI-RS is an aperiodic or semi-continuous CSI-RS, and the latest transmission time of the second CSI-RS is no later than The time corresponding to the CSI reference resource or not later than the calculation time of the CSI report of the multi-TRP, and the CSI reference resource is the CSI reference resource corresponding to the aperiodic multi-TRP CSI report. The terminal according to claim 14, wherein the first CSI report part or the second CSI report part includes a precoding matrix indicator (PMI), a rank indicator (RI), a CSI-RS resource indicator (CRI), a channel quality indicator (CQI), and SS/PBCH At least one of the block resource indicator SSBRI, the layer indicator LI, the layer 1-reference signal received power L1-RSRP, and the layer 1-signal to interference plus noise ratio L1-SINR. The terminal according to claim 14, wherein, 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 Wherein, 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. The terminal according to claim 18, wherein when the offset of the first slot and the offset of the second slot are the same, the difference between the first CSI-RS and the second CSI-RS in the slot is The interval is pre-defined or pre-configured. The terminal according to claim 14, further comprising: The processing module is configured to perform at least one of the following operations when the second CSI-RS is periodic or semi-persistent and not activated: Do not report the CSI report of the multiple TRPs; Explicitly or implicitly feed back a preset identifier to the network device, where the preset identifier is used to indicate that the terminal cannot perform the multi-TRP CSI report calculation; Update and feed back the first CSI report part; Feed back the part of the second CSI report that has not been updated. The terminal according to claim 14, further comprising: The reporting module is used for the second acquiring module to report the CSI report of the multi-TRP after obtaining the CSI report of the TRP of the multi-transmitting and receiving point according to the CSI report part corresponding to each CSI-RS. The terminal according to claim 21, wherein the reporting module is configured to use a non-periodic or semi-persistent CSI report for the CSI report of the multi-TRP, and the physical uplink shared channel PUSCH used by the CSI report of the multi-TRP is In the case of indicating or configuring multiple spatial relationship parameters, report the multi-TRP CSI report on the PUSCH according to the spatial relationship parameter corresponding to the first control resource set pool index; wherein, the first control resource set pool The index is associated with the control resource set CORESET to which the first downlink control information DCI belongs, and the first DCI is the DCI reported by the CSI report that activates the multi-TRP; Or, in the case where the CSI report of the multi-TRP is a semi-persistent CSI report, and the physical uplink shared channel PUSCH for semi-persistent transmission used by the CSI report of the multi-TRP is configured or indicates multiple spatial relationship parameters, Multiple spatial relationship parameters are alternately used to report the multi-TRP CSI report on the continuously transmitted PUSCH. The terminal according to claim 21, wherein the reporting module is used for the CSI report of the multi-TRP as a semi-persistent CSI report, and the physical uplink control channel PUCCH used by the CSI report of the multi-TRP is configured or indicated In the case of multiple spatial relationship parameters, the CSI report of the multi-TRP is reported on the PUCCH according to the spatial relationship parameter corresponding to the second control resource pool index; wherein, the second control resource pool index and the second control resource pool index 2. The control resource set CORESET to which the DCI belongs is associated, the second DCI is the DCI corresponding to the media access layer control unit MAC CE, and the MAC CE is the MAC CE that activates the CSI report of the multi-TRP; Or, in the case that the CSI report of the multi-TRP is a semi-persistent CSI report, and the physical uplink control channel PUCCH used for the semi-persistent transmission of the CSI report of the multi-TRP is configured or indicates multiple spatial relationship parameters, in the case of the semi-persistent CSI report, Multiple spatial relationship parameters are alternately used to report the multi-TRP CSI report on the continuously transmitted PUCCH. The terminal according to claim 22 or 23, wherein the multiple spatial relationship parameters and the first CSI-RS association relationship are predefined or pre-configured; the multiple spatial relationship parameters are related to the The second CSI-RS association relationship is predefined or pre-configured. A terminal, comprising: a memory, a processor, and a computer program stored on the memory and capable of running on the processor, the computer program being executed by the processor to implement any one of claims 1 to 12 The steps of the method for obtaining the channel state information report. A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the channel state information report according to any one of claims 1 to 12 is realized The steps of the method of obtaining. A computer program product that, when executed by at least one processor, implements the steps of the method for acquiring a channel state information report according to any one of claims 1 to 12. A terminal configured to perform the steps of the method for obtaining channel state information reports according to any one of claims 1 to 12.

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