WO2019096172A1

WO2019096172A1 - Method and device for indicating channel measurement

Info

Publication number: WO2019096172A1
Application number: PCT/CN2018/115478
Authority: WO
Inventors: 刘显达; 刘鹍鹏; 李雪茹; 吕永霞; 宋兴华
Original assignee: 华为技术有限公司
Priority date: 2017-11-17
Filing date: 2018-11-14
Publication date: 2019-05-23
Also published as: CN109802804B; CN109802804A

Abstract

A method and device for indicating a channel measurement, which is used to solve the problem in which a channel state information (CSI) measurement result obtained on the basis of a punctured channel state information-reference signal (CSI-RS) resource affects subsequent CSI measurement and reporting. The method comprises: a user equipment (UE) receiving configuration of a first CSI-RS resource, configuration of a first CSI report and the association between the configuration of the first CSI-RS resource and the configuration of the first CSI report which are notified by a network device; acquiring a first CSI according to the configuration of the first CSI-RS resource and the configuration of the first CSI report associated with the first CSI-RS resource; and receiving a first signaling sent from the network device, the first signaling comprising at least one field value, the at least one field value being used to indicate to the UE to refresh a cache of the first CSI, so that the UE clears a specific CSI cache affected by the punctured CSI-RS resource according to a dynamical indication of the first signaling, thereby improving the accuracy of the CSI measurement and reporting.

Description

Method and device for indicating channel measurement

The priority of the Chinese Patent Application entitled "A Method and Apparatus for Channel Measurement" is filed on November 17, 2017 in the Chinese Patent Office, filed on Jan. 17, 2017. In this application.

Technical field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for indicating channel measurements.

Background technique

The new radio (NR) of the fifth-generation mobile communication technology (5th-generation, 5G) supports at least two main service scenarios, namely, Ultra-Reliable Low Latency Communications (URLLC). And enhanced mobile broadband (eMBB). From the perspective of the network side, the transmission bearers of the eMBB users and the time-frequency resources occupied by the transmission bearers of the URLLC users can be shared. Resource sharing is dynamic, and URLLC users occupy time-frequency resources by means of pre-emption and without pre-emption. The Pre-emption mode supports the transmission of the URLLC user in the time-frequency resource allocated for the eMBB user transmission. At this time, the time-frequency resource preempted by the URLLC will be punctured for the eMBB user to transmit data or reference signals. For a time-frequency resource composed of a certain frequency band and a certain slot, in the slot, since the scheduling of the URLLC user is usually burst, the eMBB user does not know that some of the data or the reference signal has been hit. hole. As shown in FIG. 1 , although the data of the URLLC user preempts the time-frequency resources that are partially scheduled for the eMBB user, the eMBB user performs data demodulation and reference signals according to all the time-frequency resources that are scheduled to be included, including the preempted time-frequency resources. measuring.

In order to improve the demodulation and decoding success rate of a transport block (TB) transmitted by an eMBB user on a time-frequency resource scheduled for it, a preemption indication is supported in the DCI (Pre-emption Indication) The (PI) field indicates the location of the PDSCH time-frequency resource that the eMBB user has punched in the previous slot and refreshes the data soft buffer on the indicated time-frequency resource location. Figure 2 is a schematic diagram of the acquisition of the PI signaling. When the UE performs data scheduling in a certain slot, the UE blindly detects the PI signaling corresponding to the data scheduling in the subsequent slot of the slot, and obtains the need to refresh the slot. The information of the data, when the UE performs demodulation and decoding of the affected TB, skips the data transmitted on the affected time-frequency resources.

When the CSI-RS resource of the UE is punctured by the data of the URLLC user in a pre-emption manner, if the CSI-RS resource multiplexes the resource carrying the data, the UE may be based on the indication of the PI based on the unpunctured The CSI-RS resource performs channel measurement and reporting. At the same time, since the PI is indicated based on the data scheduling situation, when there is no data scheduling but there is CSI-RS transmission, the UE cannot determine whether the CSI-RS resource is the PDSCH/PDCCH of the URLLC user. Punch. Considering that the base station cannot notify before the CSI-RS resource is punctured, the UE performs CSI measurement and reporting based on the configuration of the CSI and the CSI-RS resource. Since the part of the bandwidth of the CSI-RS resource is punctured, the UE obtains the wideband CSI and the corresponding partial sub-band CSI obtained based on the CSI-RS resource measurement, and the base station needs to ignore the partial CSI information reported by the UE according to its own algorithm.

The PI field is used for the case where the PDSCH of the eMBB user is punctured, and the case where the CSI-RS resource is punctured cannot be completely determined based on the indication of the PI.

One of the reasons is that the indication and detection of the PI field are only performed when the UE performs data scheduling, and the transmission of the CSI-RS and the transmission of the data are not necessarily performed simultaneously.

The second reason is that the PI field is a resource location for notifying the user that the data is punctured. When the data of the UE on a certain OFDM symbol is not punctured by the URLLC data sent on the OFDM symbol, the CSI is sent on the symbol. When the RS resource is punctured by the PDSCH/PDCCH of the URLLC user, the indication of the bit corresponding to the bitmap in the PI is still '0', and the UE cannot determine whether the CSI-RS resource is punctured by the indication of the PI. That is to say, according to the PI field, the UE cannot determine whether the CSI measured based on the CSI-RS resource is valid.

For the measurement mode of the P/SP CSI-RS, each CSI report configuration includes a Measurement Restriction (MR) parameter for indicating the CSI-RS measurement behavior of the UE. When the MR configuration is 'ON', the UE The CSI-RS resource in the last slot is used to measure and report the CSI. When the MR is configured to be 'OFF', the UE performs channel measurement smoothing based on the CSI-RS resource in multiple slots and reports the corresponding CSI.

In summary, based on the existing technology, the UE cannot obtain information that the CSI-RS resource is punctured by the URLLC data in a pre-emption manner, since at least part of the measurement result obtained based on the punctured CSI-RS resource measurement is invalid. If the CSI measurement and reporting by the UE adopts the moving average method, an invalid CSI measurement result is invalid for the subsequent CSI measurement result. The base station cannot perform efficient data scheduling based on invalid CSI reporting information.

Summary of the invention

The embodiment of the present application provides a method and a device for indicating a channel measurement, which are used to solve the problem that a CSI measurement result obtained based on a punctured CSI-RS resource affects subsequent CSI measurement and reporting.

The specific technical solutions provided by the embodiments of the present application are as follows:

In a first aspect, an embodiment of the present application provides a method for indicating a channel measurement, including:

The user equipment UE receives the configuration of the first channel state information reference signal CSI-RS resource notified by the network device, the configuration of the first channel state information CSI report, and the configuration of the first CSI-RS resource and the first CSI report Obtaining a first CSI according to the configuration of the first CSI-RS resource and the configuration of the first CSI report associated with the first CSI-RS resource; receiving the first signaling sent by the network device, The first signaling includes at least one field value, where the at least one field value is used to indicate that the UE refreshes the buffer of the first CSI.

With the above method, the UE can clear the CSI buffer affected by the specific punctured CSI-RS resource according to the dynamic indication of the first signaling, and improve the accuracy of CSI measurement and reporting.

In a possible design, the UE further receives a configuration of a second CSI-RS resource notified by the network device, a configuration of a second CSI report, and a configuration of the second CSI-RS resource and a second CSI report. Obtaining a second CSI according to the configuration of the second CSI-RS resource and the configuration of the second CSI report associated with the second CSI-RS resource; reporting the indication according to the indication of the first signaling a second CSI, and a buffer for refreshing the first CSI; the at least one field value included in the first signaling is further used to indicate that the UE reports the second CSI.

In this design, the UE clears the CSI buffer affected by the specific punctured CSI-RS resource by the first signaling dynamic indication, and improves the accuracy of CSI measurement and reporting. Further, the first signaling and CSI report triggering The field is jointly encoded, so that the CSI report triggering field is not only used to indicate the triggering of the aperiodic CSI reporting, but also to indicate the refresh of the CSI measurement buffer based on the punctured aperiodic/periodic CSI-RS resource, thereby saving signaling overhead.

In a possible design, the UE further receives a configuration of a second CSI-RS resource notified by the network device, a configuration of a second CSI report, and a configuration of the second CSI-RS resource and a second CSI report. Obtaining a second CSI according to the configuration of the second CSI-RS resource and the configuration of the second CSI report associated with the second CSI-RS resource; obtaining a second according to the indication of the first signaling CSI, and buffering the first CSI; the at least one field value included in the first signaling is further used to trigger the second CSI-RS resource.

In this design, the UE dynamically indicates to clear the CSI buffer affected by the specific punctured CSI-RS resource by using the first signaling, and improves the accuracy of the CSI measurement. Further, the first signaling and the CSI measurement request field are jointly encoded. The CSI measurement request is used not only to indicate the triggering of the aperiodic CSI-RS resource, but also to indicate the refresh of the CSI measurement buffer based on the punctured aperiodic/periodic CSI-RS resource.

In a possible design, the UE further receives a configuration of a second CSI-RS resource notified by the network device, a configuration of a second CSI report, and a configuration of the second CSI-RS resource and a second CSI report. Correlation relationship; obtaining a second CSI according to the indication of the first signaling, reporting the second CSI, and refreshing a buffer of the first CSI; the at least one field value included in the first signaling The method is further configured to trigger the second CSI-RS resource and trigger the UE to report the second CSI.

In this design, the UE dynamically indicates the CSI buffer affected by the specific punctured CSI-RS resource by using the first signaling, thereby improving the accuracy of the CSI measurement. Further, the first signaling and the CSI report triggering field, CSI The measurement request field is jointly encoded, so that the jointly coded CSI request field is not only used to indicate the trigger of the aperiodic CSI reporting, but also indicates the triggering of the aperiodic CSI-RS resource, and is also used to indicate the aperiodic/periodic CSI based on the punctured. The refresh of the CSI of the RS resource measures the cache.

In a possible design, the UE refreshes the cache of the first CSI according to the indication of the first signaling, and refreshes a cache of the first data; wherein the time domain resource occupied by the first data is At least one OFDM symbol included in a previous slot of the slot slot in which the first signaling is located.

In this design, the UE dynamically indicates to clear the CSI buffer affected by the specific punctured CSI-RS resource by using the first signaling, thereby improving the accuracy of the CSI measurement. Further, the first signaling and the PI joint coding make the first A signaling simultaneously indicates refreshing of data based on the punctured aperiodic/periodic CSI-RS resource and refreshing of the CSI measurement buffer based on the punctured aperiodic/periodic CSI-RS resource.

In a possible design, the first CSI-RS resource is located in any one of the first N OFDM symbols of the orthogonal frequency division multiplexing OFDM symbol where the first signaling is located, and N is greater than or equal to 1 Positive integer.

In this design, a first CSI effective time window is predefined for the first signaling, and the first signaling is only used to refresh the CSI cache associated with the P/SP CSI-RS resource located in the effective time window.

In a possible design, the method further includes: the UE further receiving a configuration of a third CSI-RS resource notified by the network device, and configuring the third CSI-RS resource and the first CSI report Correlating a third CSI-RS on the third CSI-RS resource; obtaining the first CSI based on the third CSI-RS; the at least one field value included in the first signaling The method is further configured to indicate that the third CSI-RS resource is triggered.

In this design, the first signaling is also used to trigger a CSI-RS transmission to update the CSI measurement buffer of the punctured aperiodic/periodic CSI-RS resource.

In a possible design, the first signaling is further used to indicate that the UE feeds back the response of the first signaling; and the first signaling is further sent according to the first signaling.

In a possible design, the first signaling is carried in the downlink control information DCI or in the medium access control element MAC CE.

In a second aspect, the embodiment of the present application provides a channel measurement indication method, including: a network device allocates a first channel state information reference signal CSI-RS resource to a UE; and notifies the UE of the first channel state information reference signal CSI a configuration of the RS resource, a configuration of the first channel state information CSI report, and an association relationship between the first CSI-RS resource and a configuration of the first CSI report; sending the first signaling to the UE, The first signaling includes at least one field value, where the field value is used to indicate that the UE refreshes a buffer of the first CSI, where the first CSI is configured and associated by the UE according to the first CSI-RS resource. The configuration of the first CSI report associated with the first CSI-RS resource is obtained.

In a possible design, the network device notifies the UE of the configuration of the second CSI-RS resource, the configuration of the second CSI report, and the association between the second CSI-RS resource and the configuration of the second CSI report. The at least one field value included in the first signaling is further used to indicate that the UE reports a second CSI, where the second CSI is configured by the UE according to the second CSI-RS resource. A configuration of a second CSI report associated with the second CSI-RS resource is obtained.

In a possible design, the network device notifies the UE of the configuration of the second CSI-RS resource, the configuration of the second CSI report, and the association between the second CSI-RS resource and the configuration of the second CSI report. The at least one field value included in the first signaling is further used to trigger the second CSI-RS resource.

In a possible design, the network device notifies the UE of the configuration of the second CSI-RS resource, the configuration of the second CSI report, and the association between the second CSI-RS resource and the configuration of the second CSI report. The at least one field value included in the first signaling is further used to trigger the second CSI-RS resource and trigger the UE to report the second CSI, where the second CSI is the UE Obtained according to a configuration of the second CSI-RS resource and a configuration of a second CSI report associated with the second CSI-RS resource.

In a possible design, the at least one field value included in the first signaling is further used to indicate a buffer for refreshing the first data, where the time domain resource occupied by the first data is the first At least one OFDM symbol included in a previous slot of the slot slot in which the signaling is located.

In a possible design, the method further includes: the network device notifying the configuration of the third CSI-RS resource of the UE, and the association relationship between the third CSI-RS resource and the configuration of the first CSI report; Transmitting a third CSI-RS on the third CSI-RS resource; the field value included in the first signaling is further used to indicate that the third CSI-RS resource is triggered.

In a possible design, the first signaling is further used to trigger a response of the first signaling; and the network device receives a response of the first signaling.

In a third aspect, the embodiment of the present application provides a channel measurement indication device, including:

a transceiver unit, configured to receive, by a network device, a configuration of a first channel state information reference signal CSI-RS resource, a configuration of a first channel state information CSI report, and the first CSI-RS resource and the first CSI report And a processing unit, configured to obtain a first CSI according to a configuration of the first CSI-RS resource and a configuration of a first CSI report associated with the first CSI-RS resource; the transceiver unit, The method is further configured to receive the first signaling sent by the network device, where the first signaling includes at least one field value, where the at least one field value is used to instruct the processing unit to refresh the buffer of the first CSI.

In a possible design, the transceiver unit is further configured to receive a configuration of a second CSI-RS resource notified by the network device, a configuration of a second CSI report, and a second CSI-RS resource and a second An association relationship of the configuration of the CSI report; the processing unit is further configured to obtain a second CSI according to the configuration of the second CSI-RS resource and the configuration of the second CSI report associated with the second CSI-RS resource; The transceiver unit is further configured to: report the second CSI according to the indication of the first signaling; the processing unit is further configured to: refresh a buffer of the first CSI; The at least one field value is further used to indicate that the transceiver unit reports the second CSI.

In a possible design, the transceiver unit is further configured to receive a configuration of a second CSI-RS resource notified by the network device, a configuration of a second CSI report, and a second CSI-RS resource and a second An association relationship of the configuration of the CSI report; the processing unit is further configured to obtain a second CSI according to the configuration of the second CSI-RS resource and the configuration of the second CSI report associated with the second CSI-RS resource; Obtaining a second CSI according to the indication of the first signaling, and refreshing a buffer of the first CSI; the at least one field value included in the first signaling is further used to trigger the second CSI-RS Resources.

In a possible design, the transceiver unit is further configured to receive a configuration of a second CSI-RS resource notified by the network device, a configuration of a second CSI report, and a second CSI-RS resource and a second Corresponding relationship of the configuration of the CSI report; the processing unit is further configured to: obtain a second CSI according to the indication of the first signaling, report the second CSI, and refresh a cache of the first CSI; The at least one field value included in a signaling is further used to trigger the second CSI-RS resource and trigger the transceiver unit to report the second CSI.

In a possible design, the processing unit is further configured to: refresh the cache of the first CSI according to the indication of the first signaling, and refresh a cache of the first data; wherein the first data occupies The time domain resource is at least one OFDM symbol included in a previous slot of the slot slot in which the first signaling is located.

In a possible design, the transceiver unit is further configured to: receive a configuration of a third CSI-RS resource that is notified by the network device, and associate an association between the third CSI-RS resource and a configuration of the first CSI report. Receiving a third CSI-RS on the third CSI-RS resource; the processing unit is further configured to obtain the first CSI based on the third CSI-RS; included in the first signaling The at least one field value is further used to indicate that the third CSI-RS resource is triggered.

In a possible design, the first signaling is further used to indicate that the device feeds back a response of the first signaling; the transceiver unit is further configured to send the first according to the first signaling Signaling response.

In a fourth aspect, the embodiment of the present application provides a channel measurement indication device, including:

a processing unit, configured to allocate, by the user equipment UE, a first channel state information reference signal CSI-RS resource, and a transceiver unit, configured to notify the UE of the configuration of the first channel state information reference signal CSI-RS resource, where a configuration of a channel state information CSI report, and a relationship between the first CSI-RS resource and a configuration of the first CSI report; the transceiver unit is further configured to send the first signaling to the UE, where the At least one field value is included in a signaling, where the field value is used to indicate that the UE refreshes a buffer of a first CSI, where the first CSI is a configuration and a location of the UE according to the first CSI-RS resource. The configuration of the first CSI report associated with the first CSI-RS resource is obtained.

In a possible design, the transceiver unit is further configured to notify the UE of a configuration of a second CSI-RS resource, a configuration of a second CSI report, and the second CSI-RS resource and a second CSI report. The associated relationship of the configuration, the at least one field value included in the first signaling is further used to indicate that the UE reports a second CSI, and the second CSI is that the UE is according to the second CSI-RS The configuration of the resource and the configuration of the second CSI report associated with the second CSI-RS resource are obtained.

In a possible design, the transceiver unit is further configured to notify the UE of a configuration of a second CSI-RS resource, a configuration of a second CSI report, and the second CSI-RS resource and a second CSI report. The associated relationship of the configuration; the at least one field value included in the first signaling is further used to trigger the second CSI-RS resource.

In a possible design, the transceiver unit is further configured to notify the UE of a configuration of a second CSI-RS resource, a configuration of a second CSI report, and the second CSI-RS resource and a second CSI report. The at least one field value included in the first signaling is further used to trigger the second CSI-RS resource and trigger the UE to report the second CSI, the second CSI And obtaining, by the UE, according to a configuration of the second CSI-RS resource and a configuration of a second CSI report associated with the second CSI-RS resource.

In a possible design, the transceiver unit further uses: notifying a configuration of a third CSI-RS resource of the UE, and a relationship between the third CSI-RS resource and a configuration of the first CSI report; The third CSI-RS is sent on the third CSI-RS resource; the field value included in the first signaling is further used to indicate that the third CSI-RS resource is triggered.

In a possible design, the first signaling is further used to trigger a response of the first signaling; the transceiver unit further receives a response of the first signaling.

In a fifth aspect, an embodiment of the present application provides a user equipment, including a transceiver, a processor, a memory, a transceiver, configured to send and receive information, a memory for storing a program, an instruction, or a code, where the processor is configured to execute a program in the memory, An instruction or code to perform the method of any of the above first aspects or any of the possible implementations of the first aspect.

In a sixth aspect, an embodiment of the present application provides a network device, including a transceiver, a processor, a memory, a transceiver, configured to send and receive information, a memory for storing a program, an instruction, or a code, where the processor is configured to execute a program in the memory, An instruction or code to perform the method of any of the above-described second aspect or any of the possible implementations of the second aspect.

In a seventh aspect, the embodiment of the present application provides a communication system, where the system includes the device of the foregoing aspect or the user equipment of the foregoing fifth aspect, the device of the foregoing fourth aspect, or the network device of the foregoing sixth aspect.

In an eighth aspect, an embodiment of the present application provides a computer readable storage medium, where the computer readable storage medium stores instructions that, when run on a computer, cause the computer to perform any of the foregoing first aspect or the first aspect The method of design.

In a ninth aspect, the embodiment of the present application further provides a computer program product comprising instructions, when executed on a computer, causing the computer to perform the method of any of the above aspects or the first aspect of the first aspect.

In an eleventh aspect, the embodiment of the present application provides a computer readable storage medium, where the computer readable storage medium stores instructions, when executed on a computer, causing the computer to perform any of the foregoing second aspect or the second aspect. Possible design approach.

In a twelfth aspect, the embodiment of the present application further provides a computer program product comprising instructions, when executed on a computer, causing the computer to perform the method of any of the above aspects or the second aspect of the second aspect.

DRAWINGS

FIG. 1 is a schematic diagram of resource multiplexing of a URLLC user and an eMBB user;

2 is a schematic diagram of obtaining PI signaling;

3 is a flowchart of a method for indicating channel measurement in an embodiment of the present application;

4 is a schematic diagram of a mechanism for refreshing a CSI cache in an embodiment of the present application;

FIG. 5 is a schematic diagram of a working mechanism of a CSI reporting trigger field jointly encoded in the embodiment of the present application;

6 is a schematic diagram of a working mechanism of a CSI measurement request field jointly encoded in the embodiment of the present application;

FIG. 7 is a schematic diagram of a response working mechanism of the first signaling jointly coded in the embodiment of the present application;

FIG. 8 is a structural diagram of a pointing device for channel measurement according to an embodiment of the present application;

FIG. 9 is a structural diagram of a user equipment provided in an embodiment of the present application;

FIG. 10 is a structural diagram of a pointing device for channel measurement according to an embodiment of the present application;

FIG. 11 is a structural diagram of an apparatus of a network device provided in an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described in the following with reference to the accompanying drawings in the embodiments.

The technical terms involved in this application are explained below.

1, time-frequency resources

Generally, a granularity for characterizing a system time domain resource size is a slot, and for a slot based frame structure, each slot includes 14 OFDM symbols; for a non-slot based frame For a non-slot based frame structure, each slot may include 2/4/7 OFDM symbols. In addition, the granularity that characterizes the frequency domain resource size of the system is defined as a Resource Block (RB). At least in some configurations, one RB contains 12 subcarriers in the frequency domain, and each subband has a bandwidth of 15 kHz. Another commonly used characterization system has a granularity of time-frequency resource size (Resource Element, RE), and each RE includes one sub-carrier in the frequency domain and one OFDM symbol in the time domain.

In addition, a granularity of the frequency domain resource size of the system is a part bandwidth (BWP), and the base station configures one or more BWPs for the UEs in the serving cell, and each BWP configuration includes a subcarrier interval (subcarrier). The size parameter, the cyclic prefix, the number of consecutive physical resource blocks (PRBs) occupied by the BWP, and the starting position of the first PRB. These parameters are configured by the base station through higher layer signaling. At the same time, the base station will also activate one or more BWPs based on its configured BWP, and the UE will communicate with the base station based on the activated BWP.

2. Channel State Information RS (CSI-RS), CSI-RS resources

The NR supports the base station to send CSI-RSs to the UE, and each CSI-RS is carried on a specific time-frequency resource, that is, a CSI-RS resource. The UE determines the time-frequency resource carrying the CSI-RS according to the high layer signaling sent by the base station.

3. Configuration of CSI-RS resources

The high layer signaling indicating the configuration of the CSI-RS resource includes a CSI-RS resource identification number (CSI-RS resource ID), a CSI-RS resource mapping (CSI-RS resource mapping), and a CSI-RS resource type (CSI-RS resource type). ), CSI-RS time configuration, CSI-RS frequency band, CSI-RS density, etc.

The CSI-RS resource mapping includes a CSI-RS antenna port, and an RE location occupied by the CSI-RS resource corresponding to the port in one RB.

The CSI-RS resource types include periodic CSI-RS (Periodic CSI-RS, P CSI-RS), semi-persistent CSI-RS (Semi-persistent CSI-RS, SP CSI-RS), and aperiodic CSI-RS ( Aperiodic CSI-RS, AP CSI-RS). For the P CSI-RS and the SP CSI-RS, the configuration parameters of the CSI-RS resource include a CSI-RS timing configuration for indicating the period and offset of the CSI-RS transmission, that is, the parameter indicates The slot location information occupied by the CSI-RS resource, the base station will send a CSI-RS based on the configuration parameter, and the UE will also receive and measure the corresponding CSI-RS based on the configuration parameter. The difference between the P CSI-RS and the SP CSI-RS is that, for the P CSI-RS, before the base station reconfigures the CSI-RS resource through RRC signaling, the slot position occupied by the CSI-RS resource is fixed, for example, When the period of the CSI-RS is configured to be 5 ms, the CSI-RS will be continuously transmitted in a period of 5 ms; for the SP CSI-RS, the base station may pass before the base station reconfigures the CSI-RS resource through RRC signaling. The Medium Access Control (MAC) Control Element (CE) indicates the activation/deactivation of the CSI-RS resource. For example, when the CSI-RS is configured for 5 ms, it is not received. When the corresponding MAC CE is received, the CSI-RS will be continuously sent in a period of 5 ms. When the corresponding MAC CE is received, the CSI-RS resource can be deactivated, and the CSI-RS will not be sent until The corresponding MAC CE is received to activate the CSI-RS resource. For the AP CSI-RS, the configuration parameters of the CSI-RS resource do not include the CSI-RS timing configuration, that is, the slot location where the CSI-RS resource is located is not notified in the high layer signaling. The base station indicates whether the CSI-RS is transmitted by using a CSI measurement request field in the DCI signaling. The CSI measurement request field includes a state for indicating that no CSI-RS resource is triggered, and further includes at least one state for indicating triggering of at least one CSI-RS resource, and the base station notifies at least one corresponding to each state by using RRC signaling. An identifier (ID) of the CSI-RS resource, when the base station indicates one of the states, the CSI-RS resource corresponding to the CSI-RS resource ID corresponding to the state is triggered. At this time, the slot in which the CSI-RS is transmitted is the same as the slot in which the DCI signaling indicating that the CSI-RS resource is triggered is located.

4. Channel State Information (CSI)

The NR supports UE measurement and reports CSI. The UE obtains the corresponding CSI by receiving and measuring the CSI-RS. The CSI includes a Transmission Rank Indicator (TRI), a Transmission Precoding Matrix Indicators (TPMI), and a Channel Quality Indicator (CQI). The function of the CSI reporting is that the UE provides the base station with a layer, a precoding matrix, a modulation and coding scheme (MCS) used for transmitting data. Wherein, the RI is used to indicate a layer used to transmit data; the TPMI is used to indicate a precoding matrix used for transmitting data to support a base station to adopt a space division multiplexing transmission mode; and the CQI is used to indicate channel quality status information. Quantify the results to support the base station to determine the appropriate MCS. The reporting method of TPMI can be divided into broadband TPMI reporting and sub-band TPMI reporting. When the UE is reported by the base station as the broadband TPMI by signaling, the UE reports the TPMI applicable to the entire system bandwidth. When the UE is reported by the base station to report the sub-band TPMI, the UE reports multiple TPMIs, and each TPMI is applicable to different sub-bands. The sub-band is used to divide the CSI reporting bandwidth uniformly according to a frequency domain granularity configured by the base station, and each sub-band obtained by the dividing is a sub-band, and the CSI reporting bandwidth is an activated BWP or is associated with the CSI. Report the frequency band occupied by the associated CSI-RS resource.

5. Configuration of CSI report

The CSI report configuration may be configured for the UE by using the high-level signaling, and the CSI report configuration ID (CSI report configuration ID) is included in each CSI report configuration, and the specific content included in the CSI report (such as TRI, TPMI, CQI), Measurement Restriction (MR), CSI reporting type, etc. There are three types of CSI reporting in the NR: periodic CSI (Periodic CSI) reporting, semi-persistent CSI reporting, and non-periodic CSI reporting. For the P CSI and the SP CSI, the CSI report configuration includes a timing configuration parameter of the CSI report, which is used to indicate the period and offset of the CSI report, that is, the parameter indicates the slot location information occupied by the CSI report, and the UE will be based on the The configuration parameter reports the CSI in the corresponding slot, and the base station also allocates a physical uplink control channel (PUCCH) resource or a physical uplink shared channel (PUSCH) resource to the UE based on the configuration parameter. . The difference between the P CSI and the SP CSI is that, for the P CSI, before the base station reconfigures the CSI report configuration by using the RRC signaling, the slot position of the CSI report is fixed, for example, when the period reported by the CSI is 5 ms. The CSI will be continuously reported in the period of 5 ms. For the SP CSI, the base station may indicate the activation/deactivation of the CSI report by the MAC CE before the base station reconfigures the CSI report configuration through the RRC signaling, for example, when the CSI reports When the period is configured to be 5 ms, the CSI information is continuously reported in the period of 5 ms when the corresponding MAC CE is not received. When the corresponding MAC CE is received, the CSI report can be deactivated. It is not reported until the corresponding MAC CE is received to report the CSI to be activated. For the AP CSI-RS, the CSI report configuration does not include the timing configuration of the CSI report, that is, the slot location where the CSI report is not notified in the high layer signaling. The base station indicates whether the CSI information is reported by using a CSI report triggering field in the DCI signaling. The CSI report triggering field includes a state for indicating that the CSI report is not triggered, and at least one state is used to indicate that at least one CSI report is triggered, and the base station notifies, by using RRC signaling, that each state corresponds to at least one CSI report configuration ID, when the base station When one of the states is indicated, the CSI report corresponding to the at least one CSI report configuration ID corresponding to the state is triggered. At this time, the slot in which the triggered CSI is reported is the Yth slot after the slot in which the DCI signaling reported by the CSI is triggered, where the Y value is a fixed value or a value notified by the base station through signaling.

6. Association between CSI-RS resources and configuration of CSI reports

Each CSI report configuration is associated with at least one CSI-RS resource, and the base station notifies the association relationship through RRC signaling, that is, the base station associates at least one CSI-RS resource ID for each CSI report configuration ID through RRC signaling. After the association is successfully established, the base station and the UE assume that the measurement result reported by the CSI is obtained based on the CSI-RS resource measurement associated with the CSI report. The CSI report triggering field and the CSI measurement request field are jointly coded in both LTE and NR. The jointly coded field is referred to as a CSI request field in this application. The CSI request field is used to indicate triggering of the at least one CSI report and select at least one CSI-RS resource trigger from at least one CSI-RS resource associated with the CSI report.

Table 1 is an example of a CSI request field. The indication information corresponding to each state in the field is configured by high layer signaling to indicate a set of at least one CSI report configuration ID and a CSI-RS resource ID, and the CSI is triggered. The RS and the CSI in the collection are reported.

Table 1

When the CSI-RS resource of the eMBB user is punctured by the pre-emption of the PDSCH/PDCCH of the URLLC user, the UE cannot obtain the CSI-RS resource by the URL of the URLLC user in a pre-emption manner based on the existing technology. The information of the hole, because at least part of the measurement result obtained based on the measurement of the punctured CSI-RS resource is invalid, because the CSI measurement and reporting by the UE adopts a moving average method, an invalid CSI measurement result is caused to follow The CSI measurement result is invalid. At this time, the base station cannot perform efficient data scheduling based on the invalid CSI report information.

In view of this, the embodiment of the present application provides a method and an apparatus for indicating channel measurement, which avoids the problem that the CSI measurement result obtained based on the punctured CSI-RS resource affects subsequent CSI measurement and reporting.

The method for indicating the channel measurement according to the embodiment of the present application is applicable to a Long Term Evolution (LTE) system, or a 5 g system. In addition, the channel measurement indication method in the embodiment of the present application is also applicable to other wireless communication systems. For example, Global System for Mobile Communication (GSM), Universal Mobile Telecommunications System (UMTS), Code Division Multiple Access (CDMA) system, and new network systems, etc. .

The network device in the embodiment of the present application may be used to convert the received air frame and the Internet Protocol (IP) packet into a router between the user equipment and the rest of the access network, where the access network The remaining part may include an IP network; in addition, the network device in the embodiment of the present application may also coordinate attribute management of the air interface. For example, the network device in the embodiment of the present application may be a Global System for Mobile Communication (GSM) or a Base Transceiver Station (BTS) in Code Division Multiple Access (CDMA). It may be a base station (NodeB) in Wideband Code Division Multiple Access (WCDMA), an evolved base station (eNB or e-NodeB) in LTE, or a 5g system. The base station, or the central unit or the data unit in the 5g system, is not limited in the embodiment of the present application.

The user equipment in this embodiment of the present application may also be referred to as a terminal device, and may be a device for providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or other processing connected to a wireless modem. device. The user equipment may also be a wireless terminal device, wherein the wireless terminal device may communicate with one or more core networks via a Radio Access Network (RAN), and the wireless terminal device may be a mobile terminal device, such as a mobile phone. (or "cellular" phone), or a computer with a mobile terminal device, for example, a computer with a mobile terminal device can be a portable, pocket, handheld, computer built-in or in-vehicle mobile device with wireless access Network exchange language and / or data. For example, the wireless terminal device can also be a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a personal number. Assistant (Personal Digital Assistant, PDA) and other devices. The wireless terminal device may also be referred to as a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, and an Access Point. , Remote Terminal, Access Terminal, User Terminal, User Agent, User Equipment (UE), etc.

FIG. 3 is a schematic flowchart diagram of a method for indicating channel measurement provided by an embodiment of the present application. The process may be specifically implemented by hardware, software programming, or a combination of hardware and software.

Step 30: The network device notifies the UE of the configuration of the first CSI-RS resource, the configuration of the first CSI report, and the association relationship between the first CSI-RS resource and the configuration of the first CSI report.

Step 31: The UE obtains a first CSI according to a configuration of the first CSI-RS resource and a configuration of a first CSI report associated with the first CSI-RS resource.

Specifically, the UE determines the first CSI-RS resource according to the configuration of the first CSI-RS resource, receives the first CSI-RS on the first CSI-RS resource, and performs channel measurement according to the first CSI-RS. And performing CSI calculation to obtain the first CSI according to the configuration of the first CSI report associated with the first CSI-RS resource.

Step 32: The UE receives the first signaling sent by the network device, where the first signaling includes at least one field value, where the field value is used to indicate that the UE refreshes the buffer of the first CSI. Table 2 is an example of the first signaling, where the field value '1' indicates the cache in which the UE refreshes the first CSI.

Table 2

In a possible design, the field value indicates that the first CSI refreshed by the UE is obtained according to the first CSI-RS resource, where the first CSI-RS resource is located in the OFDM where the first signaling is located. The buffer of the first CSI is refreshed when any one of the first OFDM symbols of the symbol is used, and is configured to configure an effective time window for the first signaling that carries the refreshed first CSI buffer, where N is greater than or equal to 1. A positive integer, the first signaling is only used to flush the cache of CSI associated with the P/SP CSI-RS resource located within the effective time window.

For example, in the protocol of the network system, a first CSI effective time window is predefined for the first signaling, and the time domain size of the effective time window is N OFDM symbol numbers, or the network device configures the RRC signaling. The time-domain size of the effective time window of the signaling is N OFDM symbols, and the termination time of the effective time window defaults to the OFDM symbol in which the first signaling is located, if any of the P/SP CSI-RS resources Within the effective time window, it is implicitly indicated that all P/SP CSI-RS resources within the effective time window are punctured. At this time, when the UE receives the first signaling, the buffer of the CSI measurement result affected by all the P/SP CSI-RS resources will be refreshed. That is, the first signaling does not need to explicitly indicate the identification number of the configuration that is refreshed by the CSI, but only needs to explicitly indicate that the UE refreshes the buffer of some CSIs, and the certain CSIs are subjected to all the P/SP CSIs. - The CSI affected by any P/SP CSI-RS resource contained in the RS resource.

It should be noted that the field value included in the first signaling in the embodiment of the present application is indicated in the following manner when the UE is instructed to refresh the cache of the first CSI:

Manner 1: At least one field value in the first signaling needs to be associated with at least one CSI report configuration, where the CSI report configuration is at least one of at least one CSI report configuration configured by the base station through RRC signaling. At the same time, each CSI report configuration is associated with at least one CSI-RS resource, which is at least one of at least one CSI-RS resource configured by the base station through RRC signaling, and the base station passes the existing RRC signaling. Notify the UE of this association. Further, one of the first signaling values is associated with a plurality of CSI report configurations, and when the field value is indicated, at least one CSI report configuration of the plurality of CSI report configurations associated with the field value is corresponding. The CSI report is triggered, and the CSI cache corresponding to the remaining CSI report configurations in the multiple CSI report configurations is refreshed.

Manner 2: A field value in the first signaling needs to be associated with at least one P/SP CSI-RS resource, where the P/SP CSI-RS resource is at least one P/SP CSI-RS configured by the base station through RRC signaling. At least one of the resources. At the same time, each CSI-RS resource is associated with at least one CSI report configuration, and the base station notifies the UE of the association relationship through the existing RRC signaling. When a value of the field in the first signaling is indicated, implicitly indicating that at least one CSI-RS resource associated with the field value is punctured, wherein the punctured indicates a certain one included in the CSI-RS resource The CSI-RS is not sent on some REs.

Step 33: The UE refreshes the cache of the first CSI according to the indication of the first signaling.

Further, the first signaling in the present application may simultaneously indicate that the CSI measurement result that was last affected by the first CSI-RS resource puncturing is not reported.

As shown in FIG. 4, it is assumed that the effective time window of the first CSI is 14 OFDM symbols, and the first signaling is associated with the CSI-RS resource shown in FIG. 4 through RRC signaling, and the first time is obtained when the UE acquires at 15 ms. After the information indicated by the signaling, the UE clears the CSI measurement result based on the first CSI-RS resource in the previous slot, that is, the first CSI, and skips the CSI when the CSI measurement is performed in the slot where the next CSI-RS resource is located. Measurement results.

It should be noted that the first signaling in the embodiment of the present application is carried in the DCI or carried in the MAC CE. Optionally, the DCI carrying the first signaling is an uplink related DCI or a downlink related DCI; the uplink related DCI is used for uplink resource scheduling, and is carried on the PDCCH, and the downlink related DCI is used for downlink resource scheduling, and It is carried on the PDCCH.

Specifically, when the first signaling in the embodiment of the present application is encoded, the following coding scheme may be adopted:

Coding scheme one

The first signaling is jointly coded with the CSI report triggering field, and the CSI report triggering field will simultaneously indicate the triggering of the AP CSI reporting, and the AP CSI reports the buffer refresh of the corresponding CSI measurement and the CSI measurement corresponding to the P/SP CSI report.

At this time, the indication method of the channel measurement may include the following process:

S1: the network device notifies the UE of the configuration of the first CSI-RS resource, the configuration of the first CSI report, and the association between the first CSI-RS resource and the configuration of the first CSI report, and Notifying the UE of a configuration of the second CSI-RS resource, a configuration of the second CSI report, and an association relationship between the second CSI-RS resource and the configuration of the second CSI report.

It should be noted that, in the present application, the number of CSI-RS resources notified by the network device to the UE and the number of configurations of the CSI report are not less than one.

S2: The UE obtains a first CSI according to a configuration of the first CSI-RS resource and a configuration of a first CSI report associated with the first CSI-RS resource; and configuring according to the second CSI-RS resource And configuring a second CSI report associated with the second CSI-RS resource to obtain a second CSI.

S3: The UE receives the first signaling sent by the network device, where the first signaling includes at least one field value, where the at least one field value is used to indicate that the UE refreshes the cache of the first CSI. And instructing the UE to report the second CSI.

S4: The UE reports the second CSI according to the indication of the first signaling, and refreshes a buffer of the first CSI. The UE reports the second CSI according to the configuration of the second CSI report and the obtained second CSI.

In a possible design, the base station associates at least one CSI report configuration with at least one field value in the RRC signaling configuration CSI report triggering field, the field value indicating the P/SP CSI associated with the CSI report configuration associated with the field value. - The time-frequency resource of the RS resource is punctured, and the buffer of the CSI measurement affected by the punctured CSI-RS resource is refreshed, and the current indication does not trigger the corresponding CSI report, which is different from the CSI report triggering field in the prior art. When at least one field value is indicated, the reporting of the CSI corresponding to the CSI-RS resource associated with the field value is triggered.

4 and 3 are specific examples of the above-described implementation process.

The base station configures CSI report configuration #1 and CSI report configuration #2 and related parameters through RRC signaling. The CSI report configuration #1 configuration parameter includes the CSI report type=AP CSI report, MR='ON, and the CSI report configuration is associated with an AP CSI-RS resource; the CSI report configuration#2 configuration parameter includes the CSI report. Type = P CSI report, MR = 'OFF', and the CSI report configuration is associated with one P CSI-RS resource, and the period and offset of the P CSI-RS and P CSI are as shown in FIG. At this time, when the CSI reporting trigger field value is '01' in the first signaling received by the UE at the time of 12 ms, and the effective time window is defined as 15 ms, the UE will refresh the CSI buffer corresponding to the CSI report configuration #2 at the 11 ms time, and give up. When the CSI report trigger field value is '10' in the first signaling received by the UE, the UE reports the CSI corresponding to the CSI report configuration #1 and refreshes the CSI report configuration #2 corresponding to the CSI report configuration #2. The CSI caches the CSI corresponding to the CSI report configuration #2 when the CSI report trigger field value is '11' in the first signaling received by the UE. When the value of the CSI report trigger field in the first signaling received by the UE is '00', the UE does not trigger the CSI report. Specifically, Table 3 shows an example of the CSI report triggering field of the joint coding.

table 3

In summary, the network device dynamically instructs the UE to clear the CSI buffer affected by the specific punctured CSI-RS resource through the first signaling, thereby improving the accuracy of the CSI measurement and reporting. Further, the existing CSI report triggering field is only used. The triggering of the aperiodic CSI is reported, and the joint coding scheme designed in the coding scheme 1 is used to indicate not only the trigger of the aperiodic CSI reporting but also the aperiodic/periodic CSI based on the punctured. - The refresh of the CSI measurement cache of the RS resource saves signaling overhead.

Coding scheme II

The first signaling may be jointly coded with the CSI measurement request field. As mentioned above, the CSI measurement request field is used to trigger the CSI-RS resource, and the CSI-RS resource may be limited to the same CSI-RS resource as the slot in which the field is located. . The field value in the CSI measurement request field includes a status indicating that there is no CSI-RS trigger, and the remaining field values are used to indicate the sending of the CSI-RS corresponding to the at least one CSI-RS resource ID associated with the field value, the association relationship. The configuration base station of the CSI-RS resource and the base station are notified to the UE through RRC signaling.

In a possible design, in the embodiment of the present application, the P/SP CSI-RS resource ID is associated with at least one field value in the field, and when the base station indicates a field value, the P/SP associated with the field value is indicated. The P/SP CSI-RS resource corresponding to the CSI-RS resource ID is punctured. When the UE obtains the indication information of the field value, the buffer of the CSI measurement related to the P/SP CSI-RS resource is refreshed; When the value of the field is indicated, the corresponding CSI-RS is sent in the slot where the field value is located. After the UE obtains the indication information of the field value, the CSI-RS resource in the slot where the field value is located is also performed. CSI measurement.

P1: the network device notifies the UE of the configuration of the first CSI-RS resource, the configuration of the first CSI report, and the association relationship between the first CSI-RS resource and the configuration of the first CSI report, and Notifying the UE of a configuration of the second CSI-RS resource, a configuration of the second CSI report, and an association relationship between the second CSI-RS resource and the configuration of the second CSI report.

P2: The UE obtains a first CSI according to a configuration of the first CSI-RS resource and a configuration of a first CSI report associated with the first CSI-RS resource.

P3: The UE receives the first signaling sent by the network device, where the first signaling includes at least one field value, where the at least one field value is used to indicate that the UE refreshes the cache of the first CSI. And triggering the second CSI-RS resource.

P4: The UE obtains a second CSI according to the indication of the first signaling, according to a configuration of the second CSI-RS resource, and a configuration of a second CSI report associated with the second CSI-RS resource, and Refreshing the cache of the first CSI.

5 and 4 are specific examples of the above-described implementation process.

Assuming that the base station is configured with a CSI report configuration and associated with the P CSI-RS resource (ID=#1), the jointly coded CSI measurement request field is configured to the UE through RRC signaling, as shown in Table 3. As shown in FIG. 5, when the CSI-RS #1 is punctured at 11 ms, when the CSI report trigger field value received by the UE is '01' at 12 ms, the UE refreshes the CSI based on the interpretation of the field. The CSI measurement result corresponding to the report configuration and the CSI measurement based on the reissued CSI-RS #1 at 12 ms. Similarly, when the CSI reporting trigger field value received by the UE is '10', the UE receives CSI-RS#1, performs channel measurement based on CSI-RS#1, and calculates CSI according to the CSI report configuration associated with it. The UE refreshes the CSI measurement result of the CSI report configuration associated with the CSI-RS#2; when the CSI report trigger field value received by the UE is '11', the UE receives the CSI-RS#1, based on the CSI. - RS#1 performs channel measurement and calculates CSI according to the CSI report configuration associated therewith, while the UE receives CSI-RS#2, performs channel measurement based on CSI-RS#2, and calculates CSI according to the CSI report configuration associated therewith; When the CSI report trigger field value received by the UE is '00', the UE does not trigger the CSI-RS.

Table 4

In summary, the network device dynamically instructs the UE to clear the CSI buffer affected by the specific punctured CSI-RS resource by using the first signaling, and improves the accuracy of the CSI measurement. Further, the CSI measurement request field is only used to indicate the aperiodic CSI. - triggering of the RS resource, and the joint coding scheme designed in the second coding scheme makes the CSI measurement request not only used to indicate the triggering of the aperiodic CSI-RS resource, but also to indicate the aperiodic/periodic CSI-RS based on the punctured The CSI of the resource measures the refresh of the cache.

Coding scheme three

When the CSI measurement request field and the CSI report triggering field are jointly encoded, the jointly encoded field is referred to as a CSI request field in this application. The first signaling in the application may be jointly encoded with the jointly coded CSI request field, that is, at least one field value in the CSI request field not only indicates at least one CSI report configuration and its corresponding CSI-RS resource association. The CSI reports and triggers the corresponding CSI-RS resource, and also instructs to refresh the cache of the CSI measurement corresponding to some CSI report configurations.

The network device notifies the UE of the configuration of the first CSI-RS resource, the configuration of the first CSI report, and the association between the first CSI-RS resource and the configuration of the first CSI report, and Notifying the UE of a configuration of the second CSI-RS resource, a configuration of the second CSI report, and an association relationship between the second CSI-RS resource and the configuration of the second CSI report.

Q2: The UE obtains a first CSI according to a configuration of the first CSI-RS resource and a configuration of a first CSI report associated with the first CSI-RS resource.

Q3: The UE receives the first signaling sent by the network device, where the first signaling includes at least one field value, where the at least one field value is used to indicate that the UE refreshes the cache of the first CSI. And triggering the second CSI-RS resource, and triggering the UE to report the second CSI.

The fourth CSI is obtained by the UE according to the indication of the first signaling, according to the configuration of the second CSI-RS resource, and the configuration of the second CSI report associated with the second CSI-RS resource. The second CSI, and the buffer of the first CSI, the at least one field value included in the first signaling triggers the second CSI-RS resource and triggers the UE to report the second CSI.

In a possible design, the base station notifies the UE that a certain CSI report corresponding to the field value is triggered by indicating a certain field value in the first signaling of the UE, and the corresponding CSI-RS resource is triggered by the CSI, and the CSI-RS resource is triggered. The field value informs the UE to refresh the cache of the remaining CSI corresponding to the field value.

Specifically, Table 5 shows a configuration example of the joint coding multiplexing CSI request field. It is assumed that the base station configures CSI report configuration #1 for the UE, and its associated CSI-RS resource #1, CSI-RS resource#2, CSI report configuration#2, and its associated CSI-RS resource#3, CSI-RS resource #4. When the CSI request field value received by the UE is '01', the UE refreshes the CSI buffer corresponding to the CSI report configuration #1; when the CSI request field value received by the UE is '10', the UE receives the CSI- RS#3, performs channel measurement based on CSI-RS#3 and calculates CSI according to CSI report configuration#2 associated with it, and reports the CSI according to CSI report configuration#2, and the UE refreshes the corresponding CSI report configuration#1. CSI buffer; when the CSI request field value received by the UE is '11', the UE receives CSI-RS#4, performs channel measurement based on CSI-RS#4, and calculates CSI according to CSI report configuration#2 associated with it. And reporting the CSI according to CSI report configuration #2. At the same time, the UE receives CSI-RS#1, performs channel measurement based on CSI-RS#1, and calculates CSI according to CSI report configuration#1 associated with it, and according to CSI report configuration The CSI reports the CSI. When the value of the CSI request field received by the UE is '00', the UE does not trigger CSI reporting and CSI-RS resources.

table 5

Coding scheme four

The first signaling may be jointly encoded with the PI signaling. At this time, at least one field value in the first signaling not only indicates that the data on some CSI-RS resources is refreshed, but also indicates that some CSI report configuration is refreshed. Cache of CSI measurements. The time domain resource occupied by the refreshed data is at least one OFDM symbol included in a previous slot of the slot slot in which the first signaling is located.

At this time, when receiving the first signaling, the UE refreshes the cache of the first CSI according to the indication of the first signaling, and refreshes the cache of the first data, where the time domain resource occupied by the first data is the first At least one OFDM symbol included in the previous slot of the slot in which the slot is located.

Table 6 is an example of joint coding of the first signaling and the P1 signaling, where the field value '0' indicates that the UE does not trigger the buffer for refreshing the CSI; the field value '1' indicates that the UE refreshes the cache of the first CSI and refreshes the first data.

Table 6

Of course, the coding scheme of the foregoing first signaling is only an example, and the first signaling may also be independently coded. Based on the foregoing coding scheme, the first signaling in the embodiment of the present application is also used to trigger a CSI-RS transmission. In this case, the channel measurement indication method may include the following process:

X1: The network device notifies the UE of the configuration of the first CSI-RS resource, the configuration of the first CSI report, and the association relationship between the first CSI-RS resource and the configuration of the first CSI report, and the The UE notifies the configuration of the third CSI-RS resource, and the association relationship between the third CSI-RS resource and the configuration of the first CSI report.

X2: The UE obtains a first CSI according to a configuration of the first CSI-RS resource and a configuration of a first CSI report associated with the first CSI-RS resource.

X3: The UE receives the first signaling sent by the network device, where the first signaling includes at least one field value, where the at least one field value is used to indicate that the UE refreshes the cache of the first CSI. And triggering the third CSI-RS resource.

X4: The UE receives a third CSI-RS on the third CSI-RS resource;

X5: The UE obtains the first CSI based on the third CSI-RS.

As shown in FIG. 6, in designing the first signaling, in a possible design, when a certain field value in the first signaling is indicated, and there is at least one CSI report configuration associated with the field value, The field value indicates that the P/SP CSI-RS resource associated with the field value is punctured, and the AP CSI-RS is sent in the same slot as the first signaling. The CSI-RS, the time-frequency location and number of the third CSI-RS resource are the same as the associated P/SP CSI-RS resource. The UE acquires related information of the third CSI-RS resource sent in the slot based on the first signaling, and performs CSI measurement based on the third CSI-RS resource, and the obtained CSI measurement result is used to update the P/SP CSI-RS. The CSI measurement result affected by resource punching.

The third CSI-RS triggered by the first signaling has the following feature: the triggered third CSI-RS is sent only in one slot, and the slot where the third CSI-RS is transmitted and the first signaling are located. The slot is the same. Meanwhile, the slot occupied by the third CSI-RS resource does not require RRC signaling to configure its related parameters, and the other configuration information defaults to the first CSI associated with the first CSI report configuration associated with the field value indicated by the first signaling. - The configuration information of the RS resource is the same.

Further, the first signaling in the present application is further used to trigger a response feedback of an Acknowledgement/, Negative Acknowledgement (ACK/NACK) associated with the first signaling.

In a possible design, the actual triggering of the ACK/NACK response feedback is indicated by combining the resource allocation (RA) field indicating the downlink in the first signaling. As shown in FIG. 7, when a base station indicates a certain field value of the first signaling, the field value is associated with refreshing a CSI measurement buffer of at least one CSI report configuration, and the downlink resource is indicated in the first signaling. When the information indicated by the allocation field is all 0s (indicating that the current slot does not allocate resources to the UE), the user will consider that the first signaling triggers the ACK/NACK reporting at the same time, and the timing of the reporting may be determined by the predefined one as the nearest one. Upstream OFDM symbol, or determining the OFDM symbol occupied by the CSI report corresponding to the CSI report configuration; when the base station indicates a certain field value of the first signaling, the field value is associated with refreshing the CSI of the at least one CSI report configuration Measure the buffer, and the information indicating that the downlink resource allocation field indicates that the downlink resource allocation field is non-all 0 (indicating that the current slot allocates resources to the UE), the UE determines that the first signaling does not trigger the ACK/NACK feedback response. The base station indirectly determines whether the UE correctly receives the first signaling signaling by using the ACK/NACK feedback that is fed back by the UE and is associated with the PDSCH of the UE in the current slot.

In this way, the accuracy and reliability of the CSI measurement and reporting information of the UE can be improved, thereby improving the resource utilization of the network.

Based on the foregoing method embodiment, the embodiment of the present application further provides a channel measurement indication device, where the indication device can perform the execution process of the UE shown in FIG. 3. Referring to FIG. 8, the indication device 800 includes: a transceiver unit 801. And a processing unit 802. among them,

The transceiver unit 801 is configured to receive, by a network device, a configuration of a first channel state information reference signal CSI-RS resource, a configuration of a first channel state information CSI report, and the first CSI-RS resource and the first CSI The associated relationship of the report configuration;

The processing unit 802 is configured to obtain a first CSI according to a configuration of the first CSI-RS resource and a configuration of a first CSI report that is associated with the first CSI-RS resource;

The transceiver unit 801 is further configured to receive the first signaling sent by the network device, where the first signaling includes at least one field value, where the at least one field value is used to indicate that the processing unit 802 refreshes the The cache of the first CSI.

Optionally, the transceiver unit 801 is further configured to receive, by the network device, a configuration of a second CSI-RS resource, a configuration of a second CSI report, and the second CSI-RS resource and a second CSI report. Relationship of the configuration;

The processing unit 802 is further configured to obtain a second CSI according to the configuration of the second CSI-RS resource and the configuration of the second CSI report associated with the second CSI-RS resource;

The transceiver unit 801 is further configured to report the second CSI according to the indication of the first signaling;

The processing unit 802 is further configured to: refresh a cache of the first CSI;

The at least one field value included in the first signaling is further used to indicate that the transceiver unit 801 reports the second CSI.

The processing unit 802 is further configured to obtain a second CSI according to a configuration of the second CSI-RS resource and a configuration of a second CSI report associated with the second CSI-RS resource; according to the first signaling Instructing to obtain a second CSI, and refreshing the cache of the first CSI;

The at least one field value included in the first signaling is further used to trigger the second CSI-RS resource.

The processing unit 802 is further configured to: obtain a second CSI according to the indication of the first signaling, report the second CSI, and refresh a cache of the first CSI;

The at least one field value included in the first signaling is further used to trigger the second CSI-RS resource and trigger the transceiver unit 801 to report the second CSI.

Optionally, the processing unit 802 is further configured to: refresh the cache of the first CSI according to the indication of the first signaling, and refresh a cache of the first data; wherein, the time domain occupied by the first data The resource is at least one OFDM symbol included in a previous slot of the slot slot in which the first signaling is located.

Optionally, the first CSI-RS resource is located in any one of the first N OFDM symbols of the orthogonal frequency division multiplexing OFDM symbol where the first signaling is located, and N is a positive integer greater than or equal to 1. .

Optionally, the transceiver unit 801 is further configured to: receive a configuration of a third CSI-RS resource that is notified by the network device, and an association relationship between the third CSI-RS resource and a configuration of the first CSI report; Receiving, by the third CSI-RS resource, a third CSI-RS;

The processing unit 802 is further configured to obtain the first CSI based on the third CSI-RS;

The at least one field value included in the first signaling is further used to indicate that the third CSI-RS resource is triggered.

Optionally, the first signaling is further used to indicate that the apparatus feeds back a response of the first signaling;

The transceiver unit 801 is further configured to send the response of the first signaling according to the first signaling.

Optionally, the first signaling is carried in the downlink control information DCI or in the medium access control element MAC CE.

It should be noted that, for the specific function description of each unit, refer to the method for indicating the channel measurement provided by the embodiment, and details are not described herein again. The division of the unit in the embodiment of the present application is schematic, and is only a logical function division. In actual implementation, there may be another division manner. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

An integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, can be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

Based on the same inventive concept, the embodiment of the present application further provides a UE, where the UE can perform the UE side method in the foregoing method embodiment. Referring to FIG. 9, the UE 900 includes a processor 901, a transceiver 902, and a memory 903. among them,

The processor 901 is configured to read a program in the memory 903 and perform the following process:

The processor 901 is configured to control, by the transceiver 902, the configuration of the first channel state information reference signal CSI-RS resource notified by the network device, the configuration of the first channel state information CSI report, and the first CSI-RS resource and the An association relationship of the configuration of the first CSI report; obtaining a first CSI according to a configuration of the first CSI-RS resource and a configuration of a first CSI report associated with the first CSI-RS resource; and receiving, by the control transceiver 902 The first signaling sent by the network device, where the first signaling includes at least one field value, where the at least one field value is used to instruct the processing unit to refresh the buffer of the first CSI.

The memory 903 can store data used by the processor 901 when performing operations. The memory 903 can be a disk storage, a CD-ROM, an optical storage, or a memory of a physical host that carries a resource control network element, such as a hard disk or a USB disk. Secure Digital (SD) card and more.

It should be noted that, in a specific implementation manner, the function of the transceiver unit 801 in FIG. 8 can be implemented by the transceiver 902 in FIG. 9. The function of the processing unit 802 in FIG. 8 can be implemented by the processor 901 in FIG. achieve.

Also provided in this embodiment is a computer storage medium for storing computer software instructions for the UE of the above embodiment, which includes a program for executing the above embodiment.

Based on the foregoing method embodiment, the embodiment of the present application further provides a channel measurement indication device, where the indication device can perform the execution process of the network device shown in FIG. 3. Referring to FIG. 10, the indication device 1000 includes: a transceiver unit. 1001 and processing unit 1002. among them,

The processing unit 1002 is configured to allocate, by the user equipment UE, a first channel state information reference signal CSI-RS resource;

The transceiver unit 1001 is configured to notify the UE of the configuration of the first channel state information reference signal CSI-RS resource, the configuration of the first channel state information CSI report, and the first CSI-RS resource and the first The association of the configuration of the CSI report;

The transceiver unit 1001 is further configured to send the first signaling to the UE, where the first signaling includes at least one field value, where the field value is used to indicate that the UE refreshes a cache of the first CSI. The first CSI is obtained by the UE according to a configuration of the first CSI-RS resource and a configuration of a first CSI report associated with the first CSI-RS resource.

Optionally, the transceiver unit 1001 is further configured to notify the UE of a configuration of a second CSI-RS resource, a configuration of a second CSI report, and a configuration of the second CSI-RS resource and a second CSI report. Relationship

The at least one field value included in the first signaling is further used to indicate that the UE reports a second CSI, where the second CSI is a configuration and an interface of the UE according to the second CSI-RS resource. The configuration of the second CSI report associated with the second CSI-RS resource is obtained.

The at least one field value included in the first signaling is further used to trigger the second CSI-RS resource and trigger the UE to report the second CSI, where the second CSI is the UE according to the The configuration of the second CSI-RS resource and the configuration of the second CSI report associated with the second CSI-RS resource are obtained.

Optionally, the at least one field value included in the first signaling is further used to indicate a buffer for refreshing the first data, where the time domain resource occupied by the first data is the first signaling At least one OFDM symbol included in a previous slot of the slot in which the slot is located.

Optionally, the transceiver unit 1001 further uses:

Notifying the configuration of the third CSI-RS resource of the UE, and the association relationship between the third CSI-RS resource and the configuration of the first CSI report;

Transmitting a third CSI-RS on the third CSI-RS resource; the field value included in the first signaling is further used to indicate that the third CSI-RS resource is triggered.

Optionally, the first signaling is further used to trigger a response of the first signaling;

The transceiver unit 1001 also receives a response to the first signaling.

Based on the same inventive concept, the embodiment of the present application further provides a network device, where the network device can perform the method of the network device or the base station side in the foregoing method embodiment. Referring to FIG. 11, the network device 1100 includes: a processor 1101, a transceiver. 1102 and a memory 1103. among them,

The processor 1101 is configured to read a program in the memory 1103 and perform the following process:

The processor 1101 is configured to allocate a first channel state information reference signal CSI-RS resource to the user equipment UE, and control the transceiver 1102 to notify the UE of the configuration of the first channel state information reference signal CSI-RS resource. a configuration of a first channel state information CSI report, and an association relationship between the first CSI-RS resource and a configuration of a first CSI report; the control transceiver 1102 sends a first signaling to the UE, where the first The command includes at least one field value, the field value is used to indicate that the UE refreshes a buffer of the first CSI, where the first CSI is configured by the UE according to the first CSI-RS resource, and the The configuration of the first CSI report associated with a CSI-RS resource is obtained.

The memory 1103 can store data used by the processor 1101 when performing operations. The memory 1103 can be a disk storage, a CD-ROM, an optical storage, or a memory of a physical host that carries a resource control network element, such as a hard disk or a USB disk. Secure Digital (SD) card and more.

It should be noted that, in a specific implementation manner, the function of the transceiver unit 1001 in FIG. 10 can be implemented by the transceiver 1102 in FIG. 11, and the function of the processing unit 1002 in FIG. 10 can be used in the processor 1101 in FIG. achieve.

Also provided in this embodiment is a computer storage medium for storing computer software instructions for the network device or base station of the above embodiment, which comprises a program for executing the above embodiment.

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Therefore, the embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Moreover, embodiments of the present application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

It is apparent that those skilled in the art can make various modifications and variations to the embodiments of the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the embodiments of the present invention.

Claims

A method for indicating channel measurement, comprising:

The user equipment UE receives the configuration of the first channel state information reference signal CSI-RS resource notified by the network device, the configuration of the first channel state information CSI report, and the configuration of the first CSI-RS resource and the first CSI report Relationship

Obtaining, by the UE, the first CSI according to the configuration of the first CSI-RS resource and the configuration of the first CSI report associated with the first CSI-RS resource;

The UE receives the first signaling sent by the network device, where the first signaling includes at least one field value, and the at least one field value is used to indicate that the UE refreshes the buffer of the first CSI.
The method according to claim 1, wherein the UE further receives a configuration of a second CSI-RS resource notified by the network device, a configuration of a second CSI report, and the second CSI-RS resource and The association relationship of the configuration of the second CSI report;

Obtaining, by the UE, the second CSI according to the configuration of the second CSI-RS resource and the configuration of the second CSI report associated with the second CSI-RS resource;

The UE reports the second CSI according to the indication of the first signaling, and refreshes a cache of the first CSI;

The at least one field value included in the first signaling is further used to indicate that the UE reports the second CSI.
The method according to claim 1, wherein the UE further receives a configuration of a second CSI-RS resource notified by the network device, a configuration of a second CSI report, and the second CSI-RS resource and The association relationship of the configuration of the second CSI report;

Obtaining, by the UE, the second CSI according to the configuration of the second CSI-RS resource and the configuration of the second CSI report associated with the second CSI-RS resource;

Obtaining, by the UE, the second CSI according to the indication of the first signaling, and refreshing the cache of the first CSI;

The at least one field value included in the first signaling is further used to trigger the second CSI-RS resource.
The method according to claim 1, wherein the UE further receives a configuration of a second CSI-RS resource notified by the network device, a configuration of a second CSI report, and the second CSI-RS resource and The association relationship of the configuration of the second CSI report;

Obtaining, by the UE, the second CSI according to the indication of the first signaling, reporting the second CSI, and refreshing the cache of the first CSI;

The at least one field value included in the first signaling is further used to trigger the second CSI-RS resource and trigger the UE to report the second CSI.
The method according to claim 1, wherein the UE refreshes the cache of the first CSI according to the indication of the first signaling, and refreshes a cache of the first data; wherein the first data is occupied The time domain resource is at least one OFDM symbol included in a previous slot of the slot slot in which the first signaling is located.
The method according to any one of claims 1-5, wherein the first CSI-RS resource is located in a first N OFDM symbols of an Orthogonal Frequency Division Multiplexing OFDM symbol in which the first signaling is located. Any one of the OFDM symbols, N is a positive integer greater than or equal to 1.
The method of any of claims 1-6, wherein the method further comprises:

The UE further receives a configuration of a third CSI-RS resource that is notified by the network device, and an association relationship between the third CSI-RS resource and a configuration of the first CSI report;

The UE receives a third CSI-RS on the third CSI-RS resource;

Obtaining, by the UE, the first CSI based on the third CSI-RS;

The at least one field value included in the first signaling is further used to indicate that the third CSI-RS resource is triggered.
The method according to any one of claims 1 to 7, wherein the first signaling is further used to indicate that the UE feeds back a response of the first signaling;

The UE further sends a response of the first signaling according to the first signaling.
The method according to any one of claims 1-8, wherein the first signaling is carried in a downlink control information DCI or in a medium access control element MAC CE.
A method for indicating channel measurement, comprising:

The network device allocates a first channel state information reference signal CSI-RS resource to the user equipment UE;

Notifying, by the network device, the configuration of the first channel state information reference signal CSI-RS resource, the configuration of the first channel state information CSI report, and the first CSI-RS resource and a first CSI report Relationship of the configuration;

The network device sends the first signaling to the UE, where the first signaling includes at least one field value, where the field value is used to indicate that the UE refreshes a buffer of the first CSI, where the first CSI is The UE is obtained according to the configuration of the first CSI-RS resource and the configuration of the first CSI report associated with the first CSI-RS resource.
The method according to claim 10, wherein the network device notifies the UE of a configuration of a second CSI-RS resource, a configuration of a second CSI report, and a second CSI-RS resource and a second The association of the configuration of the CSI report;

The at least one field value included in the first signaling is further used to indicate that the UE reports a second CSI, where the second CSI is a configuration and an interface of the UE according to the second CSI-RS resource. The configuration of the second CSI report associated with the second CSI-RS resource is obtained.
The method according to claim 10, wherein the network device notifies the UE of a configuration of a second CSI-RS resource, a configuration of a second CSI report, and a second CSI-RS resource and a second The association of the configuration of the CSI report;

The at least one field value included in the first signaling is further used to trigger the second CSI-RS resource.
The method according to claim 10, wherein the network device notifies the UE of a configuration of a second CSI-RS resource, a configuration of a second CSI report, and a second CSI-RS resource and a second The association of the configuration of the CSI report;

The at least one field value included in the first signaling is further used to trigger the second CSI-RS resource and trigger the UE to report the second CSI, where the second CSI is the UE according to the The configuration of the second CSI-RS resource and the configuration of the second CSI report associated with the second CSI-RS resource are obtained.
The method according to claim 10, wherein the at least one field value included in the first signaling is further used to indicate a buffer for refreshing the first data; wherein the time occupied by the first data The domain resource is at least one OFDM symbol included in a previous slot of the slot slot in which the first signaling is located.
The method according to any one of claims 10 to 14, wherein the first CSI-RS resource is located in the first N OFDM symbols of the orthogonal frequency division multiplexing OFDM symbol in which the first signaling is located. Any one of the OFDM symbols, N is a positive integer greater than or equal to 1.
The method of any of claims 10-15, wherein the method further comprises:

And the network device notifying the configuration of the third CSI-RS resource of the UE, and the association relationship between the third CSI-RS resource and the configuration of the first CSI report;

The network device sends a third CSI-RS on the third CSI-RS resource; the field value included in the first signaling is further used to indicate that the third CSI-RS resource is triggered.
The method according to any one of claims 10 to 16, wherein the first signaling is further used to trigger a response of the first signaling;

The network device receives a response to the first signaling.
The method according to any one of claims 10-17, wherein the first signaling is carried in a downlink control information DCI or in a medium access control element MAC CE.
A pointing device for channel measurement, comprising:

a transceiver unit, configured to receive, by a network device, a configuration of a first channel state information reference signal CSI-RS resource, a configuration of a first channel state information CSI report, and the first CSI-RS resource and the first CSI report Relationship of the configuration;

a processing unit, configured to obtain a first CSI according to a configuration of the first CSI-RS resource and a configuration of a first CSI report that is associated with the first CSI-RS resource;

The transceiver unit is further configured to receive the first signaling sent by the network device, where the first signaling includes at least one field value, where the at least one field value is used to instruct the processing unit to refresh the A CSI cache.
The apparatus according to claim 19, wherein the transceiver unit is further configured to receive a configuration of a second CSI-RS resource notified by the network device, a configuration of a second CSI report, and the second CSI - the association relationship between the RS resource and the configuration of the second CSI report;

The processing unit is further configured to obtain a second CSI according to the configuration of the second CSI-RS resource and the configuration of the second CSI report associated with the second CSI-RS resource;

The transceiver unit is further configured to report the second CSI according to the indication of the first signaling;

The processing unit is further configured to: refresh a cache of the first CSI;

The at least one field value included in the first signaling is further used to indicate that the transceiver unit reports the second CSI.
The apparatus according to claim 19, wherein the transceiver unit is further configured to receive a configuration of a second CSI-RS resource notified by the network device, a configuration of a second CSI report, and the second CSI - the association relationship between the RS resource and the configuration of the second CSI report;

The processing unit is further configured to obtain a second CSI according to a configuration of the second CSI-RS resource and a configuration of a second CSI report associated with the second CSI-RS resource; according to the first signaling Instructing to obtain a second CSI, and refreshing the cache of the first CSI;

The at least one field value included in the first signaling is further used to trigger the second CSI-RS resource.
The apparatus according to claim 19, wherein the transceiver unit is further configured to receive a configuration of a second CSI-RS resource notified by the network device, a configuration of a second CSI report, and the second CSI - the association relationship between the RS resource and the configuration of the second CSI report;

The processing unit is further configured to: obtain a second CSI according to the indication of the first signaling, report the second CSI, and refresh a cache of the first CSI;

The at least one field value included in the first signaling is further used to trigger the second CSI-RS resource and trigger the transceiver unit to report the second CSI.
The device according to claim 19, wherein the processing unit is further configured to: refresh the cache of the first CSI according to the indication of the first signaling, and refresh a cache of the first data; The time domain resource occupied by the first data is at least one OFDM symbol included in a previous slot of the slot slot in which the first signaling is located.
The apparatus according to any one of claims 19 to 23, wherein the first CSI-RS resource is located in a first N OFDM symbols of an orthogonal frequency division multiplexing OFDM symbol in which the first signaling is located. Any one of the OFDM symbols, N is a positive integer greater than or equal to 1.
The apparatus according to any one of claims 19 to 24, wherein the transceiver unit is further configured to receive a configuration of a third CSI-RS resource notified by the network device, and the third CSI-RS Correlating a resource with a configuration of the first CSI report; receiving a third CSI-RS on the third CSI-RS resource;

The processing unit is further configured to obtain the first CSI based on the third CSI-RS;

The at least one field value included in the first signaling is further used to indicate that the third CSI-RS resource is triggered.
The device according to any one of claims 19-25, wherein the first signaling is further used to indicate that the device feeds back a response of the first signaling;

The transceiver unit is further configured to send the response of the first signaling according to the first signaling.
The apparatus according to any one of claims 19 to 26, wherein the first signaling is carried in a downlink control information DCI or in a medium access control element MAC CE.
A pointing device for channel measurement, comprising:

a processing unit, configured to allocate, by the user equipment UE, a first channel state information reference signal CSI-RS resource;

a transceiver unit, configured to notify the UE of the configuration of the first channel state information reference signal CSI-RS resource, the configuration of the first channel state information CSI report, and the first CSI-RS resource and the first CSI The associated relationship of the report configuration;

The transceiver unit is further configured to send the first signaling to the UE, where the first signaling includes at least one field value, where the field value is used to indicate that the UE refreshes a cache of the first CSI, The first CSI is obtained by the UE according to a configuration of the first CSI-RS resource and a configuration of a first CSI report associated with the first CSI-RS resource.
The apparatus according to claim 28, wherein the transceiver unit is further configured to notify the UE of a configuration of a second CSI-RS resource, a configuration of a second CSI report, and the second CSI-RS The relationship between the resource and the configuration of the second CSI report;

The at least one field value included in the first signaling is further used to indicate that the UE reports a second CSI, where the second CSI is a configuration and an interface of the UE according to the second CSI-RS resource. The configuration of the second CSI report associated with the second CSI-RS resource is obtained.
The apparatus according to claim 28, wherein the transceiver unit is further configured to notify the UE of a configuration of a second CSI-RS resource, a configuration of a second CSI report, and the second CSI-RS The relationship between the resource and the configuration of the second CSI report;

The at least one field value included in the first signaling is further used to trigger the second CSI-RS resource.
The apparatus according to claim 28, wherein the transceiver unit is further configured to notify the UE of a configuration of a second CSI-RS resource, a configuration of a second CSI report, and the second CSI-RS The relationship between the resource and the configuration of the second CSI report;

The at least one field value included in the first signaling is further used to trigger the second CSI-RS resource and trigger the UE to report the second CSI, where the second CSI is the UE according to the The configuration of the second CSI-RS resource and the configuration of the second CSI report associated with the second CSI-RS resource are obtained.
The apparatus according to claim 28, wherein the at least one field value included in the first signaling is further used to indicate a buffer for refreshing the first data; wherein the time occupied by the first data The domain resource is at least one OFDM symbol included in a previous slot of the slot slot in which the first signaling is located.
The apparatus according to any one of claims 28 to 32, wherein the first CSI-RS resource is located in a first N OFDM symbols of an orthogonal frequency division multiplexing OFDM symbol in which the first signaling is located. Any one of the OFDM symbols, N is a positive integer greater than or equal to 1.
The device according to any one of claims 28 to 33, wherein the transceiver unit further uses:

Notifying the configuration of the third CSI-RS resource of the UE, and the association relationship between the third CSI-RS resource and the configuration of the first CSI report;

Transmitting a third CSI-RS on the third CSI-RS resource; the field value included in the first signaling is further used to indicate that the third CSI-RS resource is triggered.
The apparatus according to any one of claims 28 to 34, wherein the first signaling is further used to trigger a response of the first signaling;

The transceiver unit also receives a response to the first signaling.
The apparatus according to any one of claims 28 to 35, wherein the first signaling is carried in a downlink control information DCI or in a medium access control element MAC CE.