CN109802804B

CN109802804B - Indication method and device for channel measurement

Info

Publication number: CN109802804B
Application number: CN201711148392.6A
Authority: CN
Inventors: 刘显达; 刘鹍鹏; 李雪茹; 吕永霞; 宋兴华
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-11-17
Filing date: 2017-11-17
Publication date: 2021-08-20
Anticipated expiration: 2037-11-17
Also published as: WO2019096172A1; CN109802804A

Abstract

A channel measurement indication method and device are used for solving the problem that a CSI measurement result obtained based on a punched CSI-RS resource influences subsequent CSI measurement and reporting. The method comprises the steps that UE receives configuration of a first CSI-RS resource, configuration of a first CSI report and an incidence relation between the first CSI-RS resource and the configuration of the first CSI report, wherein the configuration of the first CSI-RS resource, the configuration of the first CSI report and the incidence relation are notified by network equipment; obtaining first CSI according to the configuration of first CSI-RS resources and the configuration of first CSI reports associated with the first CSI-RS resources; receiving a first signaling sent by network equipment, wherein the first signaling comprises at least one field value, and the at least one field value is used for indicating the UE to refresh the cache of the first CSI, so that the UE clears the CSI cache influenced by the specific punched CSI-RS resource according to the dynamic indication of the first signaling, and the accuracy of CSI measurement and reporting is improved.

Description

Indication method and device for channel measurement

Technical Field

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

Background

At least two main service scenarios, namely, high-Reliable Low Latency Communications (URLLC) and enhanced mobile broadband (eMBB), are supported in the New Radio (NR) of the fifth Generation mobile communication technology (5th-Generation, 5G). From the perspective of the network side, time-frequency resources occupied by the transmission bearer of the eMBB user and the transmission bearer of the URLLC user can be shared. Resource sharing is dynamic, and URLLC users occupy time-frequency resources by means of pre-preemption (pre-preemption) and non-preemption (without pre-preemption). The Pre-indication mode supports the transmission of URLLC users to be carried in time-frequency resources allocated for eMBB user transmission. At this time, the time-frequency resources occupied by URLLC will be punctured for the data or reference signals transmitted by the eMBB users. For a time-frequency resource consisting of a certain frequency band and a certain slot (slot), within the slot, because the scheduling of the URLLC user is usually bursty, the eMBB user does not know that part of its data or reference signal has been punctured. As shown in fig. 1, although data of the URLLC user preempts part of the time-frequency resources scheduled to the eMBB user, the eMBB user will perform data demodulation and reference signal measurement according to all the time-frequency resources scheduled to it, including the preempted time-frequency resources.

In order to improve the success rate of demodulation (demodulation) and decoding (decoding) of a Transport Block (TB) transmitted by an eMBB user on a time-frequency resource scheduled to the eMBB user, a Pre-Indication (PI) field is supported in DCI to indicate the position of a PDSCH time-frequency resource punched in the previous slot of the eMBB user and refresh a data soft buffer (soft buffer) on the indicated time-frequency resource position. As shown in fig. 2, which is a schematic diagram for obtaining PI signaling, when a UE performs data scheduling in a slot, the UE may blindly detect the PI signaling corresponding to the data scheduling in a subsequent slot of the slot to obtain information of data to be refreshed in the slot, and then the UE may skip data sent on affected time-frequency resources when performing demodulation and decoding of an affected TB.

When the CSI-RS resource (resource) of the UE is punctured by the data of the URLLC user in a pre-puncturing mode, if the CSI-RS resource multiplexes the resource carrying the data, the UE can perform channel measurement and report based on the CSI-RS resource which is not punctured according to the indication of the PI, and meanwhile, because the PI is indicated based on the data scheduling condition, when no data is scheduled but the CSI-RS is transmitted, the UE cannot determine whether the CSI-RS resource is punctured by the PDSCH/PDCCH of the URLLC user. Considering that the base station cannot notify before the CSI-RS resource is punctured, the UE will perform CSI measurement and reporting based on the CSI and CSI-RS resource configuration. Because part of the bandwidth of the CSI-RS resource is punctured, the wideband CSI obtained by the UE based on the CSI-RS resource measurement and the corresponding part of the subband CSI are invalid, and the base station needs to ignore part of the CSI information reported by the UE according to its own algorithm.

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

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

The second reason is that the PI field is used to inform the user of the resource location where data is punctured, and when the data of the UE on one OFDM symbol is not punctured by the URLLC data transmitted on that OFDM symbol and the CSI-RS resource transmitted on that symbol is punctured by the PDSCH/PDCCH of the URLLC user, the indication of the bit of the symbol corresponding to the bitmap in the PI is still '0', and the UE cannot determine whether the CSI-RS resource is punctured or not by the indication of the PI. That is, according to the PI field, the UE cannot determine whether CSI obtained based on CSI-RS resource measurement is valid.

For the Measurement mode of the P/SP CSI-RS, each CSI report configuration may include a Measurement Restriction (MR) parameter for indicating the CSI-RS Measurement behavior of the UE, when the MR is configured as 'ON', the UE performs Measurement based ON the CSI-RS resource in the latest slot and reports CSI, and when the MR is configured as 'OFF', the UE performs smoothing of channel Measurement based ON the CSI-RS resources in multiple slots and reports corresponding CSI.

In summary, based on the prior art, the UE cannot acquire information that CSI-RS resource is punctured by URLLC data in a pre-projection manner, and since at least part of measurement results obtained based on the punctured CSI-RS resource measurement are invalid, if the UE performs CSI measurement and reports in a sliding average manner, a primary invalid CSI measurement result is invalid for subsequent CSI measurement results. The base station cannot perform efficient data scheduling based on invalid CSI reporting information.

Disclosure of Invention

The embodiment of the application provides an indication method and device for channel measurement, and aims to solve the problem that a CSI measurement result obtained based on a punched CSI-RS resource influences subsequent CSI measurement and reporting.

The embodiment of the application provides the following specific technical scheme:

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

the method comprises the steps that User Equipment (UE) receives configuration of a first channel state information reference signal (CSI-RS) resource, configuration of a first CSI report and an incidence relation between the first CSI-RS resource and the configuration of the first CSI report, wherein the configuration of the first CSI-RS resource is notified by network equipment; obtaining first CSI according to the configuration of the first CSI-RS resource and the configuration of a first CSI report associated with the first CSI-RS resource; receiving first signaling sent by the network equipment, wherein the first signaling comprises at least one field value, and the at least one field value is used for indicating the UE to refresh the cache of the first CSI.

By adopting the method, the UE can clear the CSI cache influenced by the specific punched CSI-RS resource according to the dynamic indication of the first signaling, and the accuracy of CSI measurement and reporting is improved.

In one possible design, the UE further receives, from the network device, a configuration of a second CSI-RS resource, a configuration of a second CSI report, and an association relationship between the second CSI-RS resource and the configuration of the second CSI report; obtaining second CSI according to the configuration of the second CSI-RS resource and the configuration of a second CSI report associated with the second CSI-RS resource; reporting 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 instruct the UE to report the second CSI.

In the design, the UE clears the CSI cache influenced by the specific punched CSI-RS resource through the dynamic indication of the first signaling, so that the accuracy of CSI measurement and reporting is improved, and further, the first signaling and the CSI reporting field are jointly coded, so that the CSI reporting field is used for indicating the triggering of the aperiodic CSI reporting and also indicating the refreshing of the CSI measurement cache based on the punched aperiodic/periodic CSI-RS resource, and the signaling overhead is saved.

In one possible design, the UE further receives, from the network device, a configuration of a second CSI-RS resource, a configuration of a second CSI report, and an association relationship between the second CSI-RS resource and the configuration of the second CSI report; obtaining second CSI according to the configuration of the second CSI-RS resource and the configuration of a second CSI report associated with the second CSI-RS resource; obtaining 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 also used to trigger the second CSI-RS resource.

In the design, the UE dynamically indicates to empty the CSI cache affected by the specific punched CSI-RS resource through the first signaling, so that the accuracy of CSI measurement is improved, and further, the first signaling and the CSI measurement request field are jointly coded, so that the CSI measurement request is not only used for indicating the triggering of the aperiodic CSI-RS resource, but also used for indicating the refreshing of the CSI measurement cache based on the punched aperiodic/periodic CSI-RS resource.

In one possible design, the UE further receives, from the network device, a configuration of a second CSI-RS resource, a configuration of a second CSI report, and an association relationship between the second CSI-RS resource and the configuration of the second CSI report; obtaining a 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 for triggering the second CSI-RS resource and triggering the UE to report the second CSI.

In the design, the UE dynamically indicates to empty the CSI cache affected by the specific punched CSI-RS resource through the first signaling, so that the accuracy of CSI measurement is improved, and further, the first signaling is jointly coded with a CSI reporting field and a CSI measurement request field, so that the jointly coded CSI request field is used for indicating triggering of aperiodic CSI reporting, indicating triggering of aperiodic CSI-RS resource and indicating refreshing of the CSI measurement cache based on the punched aperiodic CSI-RS resource.

In one possible design, the UE refreshes the buffer of the first CSI and refreshes the buffer of the first data according to the indication of the first signaling; wherein, the time domain resource occupied by the first data is at least one OFDM symbol contained in the previous slot of the slot where the first signaling is located.

In the design, the UE dynamically indicates to empty the CSI buffer affected by the specific punctured CSI-RS resource through the first signaling, so as to improve the accuracy of CSI measurement, and further, the first signaling and PI joint coding enable the first signaling to indicate the refreshing of the data based on the punctured aperiodic/periodic CSI-RS resource and the refreshing of the CSI measurement buffer based on the punctured aperiodic/periodic CSI-RS resource at the same time.

In one possible design, the first CSI-RS resource is located in any one of first N OFDM symbols of an OFDM symbol where the first signaling is located, where N is a positive integer greater than or equal to 1.

In this design, an effective time window for the first CSI is predefined for the first signaling, which is only used to refresh the buffering of CSI associated with P/SP CSI-RS resources located within the effective time window.

In one possible design, the method further includes: the UE also receives the configuration of a third CSI-RS resource notified by the network equipment and the incidence relation between the third CSI-RS resource and the configuration of the first CSI report; receiving 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 is also used to indicate that the third CSI-RS resource is triggered.

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

In one possible design, the first signaling is further used to instruct the UE to feed back an acknowledgement of the first signaling; and sending the response of the first signaling according to the first signaling.

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

In a second aspect, an embodiment of the present application provides a method for indicating channel measurement, including: the network equipment allocates a first channel state information reference signal (CSI-RS) resource for the UE; informing the UE of the configuration of the first CSI-RS resource, the configuration of the first CSI report and the incidence relation between the first CSI-RS resource and the configuration of the first CSI report; sending first signaling to the UE, wherein the first signaling comprises at least one field value, and the field value is used for indicating the UE to refresh the cache of the first CSI, and the first CSI is obtained by the UE according to the configuration of the first CSI-RS resource and the configuration of a first CSI report associated with the first CSI-RS resource.

In one possible design, the network device notifies the UE of a configuration of a second CSI-RS resource, a configuration of a second CSI report, and an association of the second CSI-RS resource with the configuration of the second CSI report; the at least one field value included in the first signaling is further used for instructing the UE to report a second CSI, where the second CSI is obtained by the UE according to the configuration of the second CSI-RS resource and the configuration of a second CSI report associated with the second CSI-RS resource.

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

In one possible design, the network device notifies the UE of a configuration of a second CSI-RS resource, a configuration of a second CSI report, and an association of the second CSI-RS resource with the configuration of the second CSI report; the at least one field value included in the first signaling is further used for triggering the second CSI-RS resource and the UE to report the second CSI, where the second CSI is obtained by the UE according to the configuration of the second CSI-RS resource and the configuration of a second CSI report associated with the second CSI-RS resource.

In one possible design, the at least one field value included in the first signaling is further to indicate that a cache of first data is refreshed; wherein, the time domain resource occupied by the first data is at least one OFDM symbol contained in the previous slot of the slot where the first signaling is located.

In one possible design, the method further includes: the network equipment informs the UE of the configuration of a third CSI-RS resource and the incidence relation between the third CSI-RS resource and the configuration of a first CSI report; transmitting a third CSI-RS on the third CSI-RS resource; the field value included in the first signaling is also used to indicate that a third CSI-RS resource is triggered.

In one possible design, the first signaling is further used to trigger an acknowledgement of the first signaling; the network device receives an acknowledgement of the first signaling.

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

the receiving and sending unit is used for receiving configuration of a first channel state information reference signal (CSI-RS) resource, configuration of a first CSI report and an incidence relation between the first CSI-RS resource and the configuration of the first CSI report, wherein the configuration of the first CSI-RS resource is notified by network equipment; a processing unit, configured to obtain 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 transceiving unit is further configured to receive a 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 instruct the processing unit to refresh the buffering of the first CSI.

In one possible design, the transceiver unit is further configured to receive, from the network device, a configuration of a second CSI-RS resource, a configuration of a second CSI report, and an association relationship between the second CSI-RS resource and the configuration of the second CSI report; the processing unit is further configured to obtain second CSI according to the configuration of the second CSI-RS resource and the configuration of a 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 included in the first signaling is further used to instruct the transceiver unit to report the second CSI.

In one possible design, the transceiver unit is further configured to receive, from the network device, a configuration of a second CSI-RS resource, a configuration of a second CSI report, and an association relationship between the second CSI-RS resource and the configuration of the second CSI report; the processing unit is further configured to obtain second CSI according to the configuration of the second CSI-RS resource and the configuration of a second CSI report associated with the second CSI-RS resource; obtaining 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 also used to trigger the second CSI-RS resource.

In one possible design, the transceiver unit is further configured to receive, from the network device, a configuration of a second CSI-RS resource, a configuration of a second CSI report, and an association relationship between the second CSI-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 the 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 resource and to trigger the transceiver unit to report the second CSI.

In one possible design, the processing unit is further configured to refresh the buffer of the first CSI and refresh the buffer of the first data according to the indication of the first signaling; wherein, the time domain resource occupied by the first data is at least one OFDM symbol contained in the previous slot of the slot where the first signaling is located.

In one possible design, the transceiver unit is further configured to receive a configuration of a third CSI-RS resource notified by the network device and an association relationship between the third CSI-RS resource and the 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 also used to indicate that the third CSI-RS resource is triggered.

In one possible design, the first signaling is further used to instruct the apparatus to feed back an acknowledgement of the first signaling; the transceiver unit is further configured to send an acknowledgement of the first signaling according to the first signaling.

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

the processing unit is used for allocating a first channel state information reference signal (CSI-RS) resource for User Equipment (UE); a transceiver unit, configured to notify the UE of a configuration of the first CSI-RS resource, a configuration of the first CSI-RS report, and an association relationship between the first CSI-RS resource and the configuration of the first CSI report; the transceiver unit is further configured to send a first signaling to the UE, where the first signaling includes at least one field value, where the field value is used to instruct the UE to refresh a buffer of first CSI, and the first CSI is obtained by the UE according to the configuration of the first CSI-RS resource and the configuration of a first CSI report associated with the first CSI-RS resource.

In one 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 an association relationship 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 for instructing the UE to report a second CSI, where the second CSI is obtained by the UE according to the configuration of the second CSI-RS resource and the configuration of a second CSI report associated with the second CSI-RS resource.

In one 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 an association relationship 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 also used to trigger the second CSI-RS resource.

In one 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 an association relationship 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 for triggering the second CSI-RS resource and the UE to report the second CSI, where the second CSI is obtained by the UE according to the configuration of the second CSI-RS resource and the configuration of a second CSI report associated with the second CSI-RS resource.

In one possible design, the transceiver unit further comprises: informing the UE of the configuration of a third CSI-RS resource and the incidence relation 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 also used to indicate that a third CSI-RS resource is triggered.

In one possible design, the first signaling is further used to trigger an acknowledgement of the first signaling; the transceiver unit is further configured to receive an acknowledgement of the first signaling.

In a fifth aspect, an embodiment of the present application provides a user equipment, which includes a transceiver, a processor, and a memory, where the transceiver is configured to transmit and receive information, the memory is configured to store a program, an instruction, or code, and the processor is configured to execute the program, the instruction, or the code in the memory to implement the method in the first aspect or any possible implementation manner of the first aspect.

In a sixth aspect, an embodiment of the present application provides a network device, which includes a transceiver, a processor, and a memory, where the transceiver is configured to transmit and receive information, the memory is configured to store a program, an instruction, or code, and the processor is configured to execute the program, the instruction, or the code in the memory to implement the method in the second aspect or any possible implementation manner of the second aspect.

In a seventh aspect, an embodiment of the present application provides a communication system, where the system includes the apparatus of the third aspect or the user equipment of the fifth aspect, and the apparatus of the fourth aspect or the network equipment of the sixth aspect.

In an eighth aspect, embodiments of the present application provide a computer-readable storage medium having stored therein instructions, which, when executed on a computer, cause the computer to perform the method of the first aspect or any possible design of the first aspect.

In a ninth aspect, the present application further provides a computer program product containing instructions which, when run on a computer, cause the computer to perform the method of the first aspect or any possible design of the first aspect.

In an eleventh aspect, embodiments of the present application provide a computer-readable storage medium having stored therein instructions, which, when run on a computer, cause the computer to perform the method of the second aspect or any possible design of the second aspect described above.

In a twelfth aspect, embodiments of the present application further provide a computer program product containing instructions that, when run on a computer, cause the computer to perform the method of the second aspect or any possible design of the second aspect.

Drawings

Fig. 1 is a schematic diagram of resource reuse of a URLLC user and an eMBB user;

fig. 2 is a schematic diagram of acquisition of a PI signaling;

FIG. 3 is a flow chart of an indication method of channel measurement in an embodiment of the present application;

fig. 4 is a schematic diagram illustrating a mechanism for refreshing a CSI buffer in an embodiment of the present application;

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

fig. 6 is a schematic diagram illustrating an operation mechanism of a jointly coded CSI measurement request field in an embodiment of the present application;

fig. 7 is a schematic diagram of an acknowledgement operation mechanism of a first signaling of joint coding in the embodiment of the present application;

FIG. 8 is a diagram illustrating an indicating apparatus for channel measurement according to an embodiment of the present invention;

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

FIG. 10 is a diagram illustrating an indicating apparatus for channel measurement according to an embodiment of the present invention;

fig. 11 is a device configuration diagram of a network device provided in the embodiment of the present application.

Detailed Description

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

The following explains the terms of art referred to in this application.

1. Time frequency resource

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

In addition, a granularity characterizing the size of the frequency domain Resource of the system is a partial Bandwidth (BWP), and the base station configures one or more BWPs for the UEs in its serving cell, where each BWP configuration includes a subcarrier spacing (subcarrier spacing) size parameter, a cyclic prefix (cyclic prefix), the number of consecutive Physical Resource Blocks (PRBs) occupied by the BWP and the starting position of the first PRB, and these parameters are configured by the base station through high layer signaling. Meanwhile, the base station activates one or more BWPs based on the configured BWPs, and the UE will interactively communicate with the base station based on the activated BWPs.

2. Channel State Information reference Signal (CSI-RS), CSI-RS resource

The NR supports the base station to send CSI-RS to the UE, and each CSI-RS is carried on a specific time frequency resource, namely a CSI-RS resource (CSI-RS resource). And the UE determines the time-frequency resource for bearing the CSI-RS according to the high-level signaling sent by the base station.

3. Configuration of CSI-RS resources

The higher 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), a CSI-RS resource type (CSI-RS resource type), a CSI-RS timing configuration (CSI-RS time configuration), a CSI-RS frequency band (CSI-RS frequency band), a CSI-RS density (CSI-RS density), and the like.

The CSI-RS resource mapping comprises a CSI-RS antenna port (antenna port) and an RE position occupied by a 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-static 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 resources include CSI-RS timing configuration for indicating a period and offset (offset) for sending the CSI-RS, that is, the parameters indicate slot location information occupied by CSI-RS resource, the base station sends the CSI-RS based on the configuration parameters, and the UE receives and measures the corresponding CSI-RS based on the configuration parameters. 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 5ms, the CSI-RS will transmit continuously with the period of 5 ms; for the SP CSI-RS, before the base station reconfigures the CSI-RS resource through RRC signaling, the base station may indicate activation/deactivation (activation/deactivation) of the CSI-RS resource through a Medium Access Control (MAC) Control Element (CE), for example, when the period of the CSI-RS is configured to 5ms, when the corresponding MAC CE is not received, the CSI-RS will transmit continuously with 5ms, and when the corresponding MAC CE is received, the CSI-RS resource may be deactivated, and at this time, the CSI-RS will not transmit again until the corresponding MAC CE is received and the CSI-RS resource is activated. For the AP CSI-RS, the configuration parameters of the CSI-RS resource do not contain CSI-RS time sequence configuration, that is, the slot position of the CSI-RS resource is not notified in a high-level signaling. The base station indicates whether the CSI-RS is transmitted or not through a CSI measurement request field (CSI measurement request field) in the DCI signaling. The CSI measurement request field comprises a state used for indicating that no CSI-RS resource is triggered and at least one state used for indicating the triggering of at least one CSI-RS resource, the base station informs an Identifier (ID) of at least one CSI-RS resource corresponding to each state through RRC signaling, and when the base station indicates one of the states, the base station indicates that the CSI-RS resource corresponding to the CSI-RS resource ID corresponding to the state is triggered. At this time, the slot where the CSI-RS is sent is the same as the slot where the DCI signaling indicating that the CSI-RS resource is triggered is located.

4. Channel State Information (CSI)

And the NR supports the UE to measure and report the CSI. And the UE obtains corresponding CSI by receiving and measuring the CSI-RS. The CSI includes a Transmission Rank Indicator (TRI), a Transmission Precoding Matrix Indicator (TPMI), and a Channel Quality Indicator (CQI) for reporting. The CSI report is used for the UE to provide the base station with the layer number (layer), the precoding matrix, the Modulation and Coding Scheme (MCS) used for transmitting data. Wherein, the RI is used to indicate the number of layers (layers) used for transmitting data; the TPMI is used for indicating a precoding matrix used by transmission data so as to support a base station to adopt a space division multiplexing transmission mode; the CQI is used to indicate a quantization result of the channel quality status information to support the base station to determine an appropriate MCS. The reporting modes of the TPMI can be divided into wideband TPMI reporting and sub-band TPMI reporting. When the UE is indicated by the base station through signaling to be the broadband TPMI report, the UE reports the TPMI applicable to the whole system bandwidth. When the UE is indicated by the base station through signaling to be a sub-band TPMI for reporting, the UE reports a plurality of TPMIs, and each TPMI is respectively suitable for different sub-bands. The sub-band is obtained by uniformly dividing a CSI reporting bandwidth according to a frequency domain granularity configured by a base station, wherein each sub-band obtained by the division is a sub-band, and the CSI reporting bandwidth is an activated BWP or a frequency band occupied by CSI-RS resource associated with CSI reporting.

5. Configuration of CSI reports

The base station may configure at least one CSI report configuration (CSI report configuration) for the UE through a high-level signaling, where each CSI report configuration includes a CSI report configuration identification number (CSI report configuration ID), specific contents (such as TRI, TPMI, CQI) included in the CSI report, Measurement Restriction (MR), a CSI report type, and the like. There are three types of CSI reporting supported in NR: periodic CSI (periodic CSI) reporting, Semi-static CSI (Semi-persistent CSI) reporting, and aperiodic CSI (aperiodic CSI) reporting. For P CSI and SP CSI, the CSI report configuration includes a timing configuration parameter of a CSI report, which is used to indicate a period and an offset of the CSI report, that is, the parameter indicates slot location information occupied by the CSI report, the UE reports the CSI in a corresponding slot based on the configuration parameter, and the base station also allocates a Physical Uplink Control Channel (PUCCH) resource or a Physical Uplink Shared Channel (PUSCH) resource to the UE based on the configuration parameter. 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 through RRC signaling, a slot position where CSI is reported is fixed, for example, when a cycle of CSI reporting is configured to be 5ms, CSI is continuously reported with 5ms as a cycle; for SP CSI, before the base station reconfigures the CSI report configuration through RRC signaling, the base station may indicate activation/deactivation of CSI reporting through the MAC CE, for example, when a CSI reporting period is configured to 5ms, when a corresponding MAC CE is not received, CSI information is continuously reported with 5ms as a period, when a corresponding MAC CE is received, CSI reporting may be deactivated, and at this time, the CSI information is not reported until the corresponding MAC CE is received and the CSI reporting is activated. For the AP CSI-RS, the CSI report configuration does not include the timing configuration of CSI reporting, that is, the slot location where the CSI report is located is not notified in the higher layer signaling. And the base station indicates whether the CSI information is reported or not through a CSI reporting triggering field (CSI report triggering field) in the DCI signaling. The CSI report triggering field comprises a state used for indicating that CSI report is not triggered, and also comprises at least one state used for indicating that at least one CSI report is triggered, the base station informs each state of corresponding at least one CSI report configuration ID through RRC signaling, and when the base station indicates one of the states, the base station indicates that the CSI report corresponding to the at least one CSI report configuration ID corresponding to the state is triggered. At this time, the slot where the triggered CSI report is located is the Y-th slot after the slot where the DCI signaling triggering the CSI report is located, where a Y value is a fixed value or a value notified by the base station through signaling.

6. Association relation of CSI-RS resource and configuration of CSI report

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, and after the association relationship 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. Both LTE and NR support CSI report triggerring field and CSI measurement request field joint coding, and the jointly coded field is referred to as CSI request field (CSI request field) in this application. The CSI request field is used to indicate a trigger of at least one CSI report and to select at least one CSI-RS resource trigger from among at least one CSI-RS resource associated with the CSI report.

Table 1 is an example of a CSI request field, where indication information corresponding to each state in the field is configured by a higher layer signaling, and is used to indicate a set of at least one CSI report configuration ID and a CSI-RS resource ID, and trigger reporting of the CSI-RS and CSI in the set.

TABLE 1

When the CSI-RS resource of an eMBB user is punched by a PDSCH/PDCCH of a URLLC user in a pre-projection mode, based on the prior art, UE cannot acquire information that the CSI-RS resource is punched by the data of the URLLC user in the pre-projection mode, at least part of measurement results obtained based on the measurement of the punched CSI-RS resource are invalid, and because the UE performs CSI measurement and reporting in a sliding average mode, the invalid CSI measurement result at one time is invalid to the subsequent CSI measurement result, and at the moment, a base station cannot perform efficient data scheduling based on the invalid CSI reporting information.

In view of this, embodiments of the present application provide a method and an apparatus for indicating channel measurement, so as to avoid a problem that a CSI measurement result obtained based on a punctured CSI-RS resource affects subsequent CSI measurement and reporting.

The method for indicating the channel measurement is suitable for a Long Term Evolution (LTE) system or a 5g system; in addition, the method for indicating channel measurement according to the embodiment of the present application may also be applied to other wireless Communication systems, such as Global System for Mobile Communication (GSM), Mobile Communication System (UMTS), Code Division Multiple Access (CDMA), and new network systems.

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

The user equipment in the embodiments of the present application may also be referred to as terminal equipment, and may be a device for providing voice and/or data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem. 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 referred to as a "cellular" phone), or a computer with a mobile terminal device, for example, the computer with a mobile terminal device may be a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, which exchanges languages and/or data with the RAN. For example, the Wireless terminal device may be a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), or the like. The wireless Terminal device may also be called a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), an Access Point (Access Point), a Remote Terminal device (Remote Terminal), an Access Terminal device (Access Terminal), a User Terminal device (User Terminal), a User Agent (User Agent), or a User Equipment (User Equipment, UE).

Fig. 3 is a schematic flowchart illustrating a method for indicating channel measurement according to an embodiment of the present application, where the flowchart may be implemented by hardware, software programming, or a combination of hardware and software.

Step 30: the network equipment informs the UE of the configuration of the first CSI-RS resource, the configuration of the first CSI report and the incidence relation between the first CSI-RS resource and the configuration of the first CSI report.

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

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

Step 32: the UE receives a first signaling sent by the network equipment, wherein the first signaling comprises at least one field value, and the field value is used for indicating the UE to refresh the cache of the first CSI. Table 2 is an example of the first signaling, in which a field value '1' indicates that the UE refreshes the buffering of the first CSI.

TABLE 2

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

For example, an effective time window of the first CSI is predefined for the first signaling in a protocol of the network system, where the time domain size of the effective time window is N OFDM symbols, or the network device configures the time domain size of the effective time window of the first signaling to be N OFDM symbols through RRC signaling, and the termination time of the effective time window defaults to the OFDM symbol where the first signaling is located, and if any P/SP CSI-RS resource is within the effective time window, it implicitly indicates 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 CSI measurement results affected by all P/SP CSI-RS resources will be refreshed. That is to say, the first signaling does not need to indicate the identifier of the configuration for updating CSI report in a display manner, but only needs to indicate the UE to update the buffer of some CSI, where the some CSI is CSI affected by any P/SP CSI-RS resource contained in all the P/SP CSI-RS resources.

It should be noted that, when instructing the UE to refresh the buffer of the first CSI, a field value included in the first signaling in the embodiment of the present application is indicated by:

the first method is as follows: 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. Meanwhile, each CSI report configuration is associated with at least one CSI-RS resource, the CSI-RS resource is at least one of the at least one CSI-RS resource configured by the base station through RRC signaling, and the base station informs the UE of the association relationship through the existing RRC signaling. Further, a certain field value in the first signaling is associated with multiple CSI report configurations, where when the field value is indicated, a CSI report corresponding to at least one CSI report configuration of the multiple CSI report configurations associated with the field value is triggered, and CSI buffers corresponding to the remaining CSI report configurations of the multiple CSI report configurations are refreshed.

The second method comprises the following steps: one field value in the first signaling needs to be associated with at least one P/SP CSI-RS resource, wherein the P/SP CSI-RS resource is at least one of the at least one P/SP CSI-RS resource configured by the base station through RRC signaling. Meanwhile, each CSI-RS resource is associated with at least one CSI report configuration, and the base station informs the UE of the association relationship through the existing RRC signaling. When a certain field value in the first signaling is indicated, it is implicitly indicated that at least one CSI-RS resource associated with the field value is punctured, wherein puncturing indicates that the CSI-RS is not transmitted on some REs contained in the CSI-RS resource.

Step 33: and the UE refreshes the buffer of the first CSI according to the indication of the first signaling.

Further, the first signaling in the present application may indicate not to report the CSI measurement result that is affected by the first CSI-RS resource puncturing last time at the same time.

As shown in fig. 4, assuming that the effective time window of the first CSI is 14OFDM symbols, and the first signaling is associated to the CSI-RS resource shown in fig. 4 through RRC signaling, after the UE acquires information indicated by the first signaling in 15ms, the UE may clear the CSI measurement result based on the first CSI-RS resource in the last slot, that is, the first CSI, and skip the CSI measurement result when performing CSI measurement in the slot where the next CSI-RS resource is located.

It should be noted that the first signaling in the embodiment of the present application is carried in DCI or carried in 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 is carried on the PDCCH.

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

coding scheme one

And the first signaling and the CSI report triggering field are jointly coded, so that the CSI report triggering field can simultaneously indicate the triggering of AP CSI reporting, the cache refreshing of CSI measurement corresponding to the AP CSI reporting and the cache refreshing of CSI measurement corresponding to the P/SP CSI reporting.

At this time, the method for indicating channel measurement may include the following processes:

s1: the network equipment informs the UE of the configuration of a first CSI-RS resource, the configuration of a first CSI report and the incidence relation between the first CSI-RS resource and the configuration of the first CSI report, and informs the UE of the configuration of a second CSI-RS resource, the configuration of a second CSI report and the incidence relation 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 and the number of configurations of CSI reports that are notified to the UE by the network device are not less than one.

S2: the UE obtains first CSI according to the configuration of the first CSI-RS resource and the configuration of a first CSI report related to the first CSI-RS resource; obtaining second CSI according to the configuration of the second CSI-RS resource and the configuration of a second CSI report associated with the second CSI-RS resource.

S3: and the UE receives a first signaling sent by the network equipment, wherein the first signaling comprises at least one field value, and the at least one field value is used for indicating the UE to refresh the cache of the first CSI and indicating the UE to report the second CSI.

S4: and the UE reports the second CSI according to the indication of the first signaling and refreshes the cache of the first CSI. And the UE reports the second CSI according to the configuration of the second CSI report and the obtained second CSI.

In one possible design, a base station configures at least one field value in a CSI report triggering field to associate with at least one CSI report configuration through RRC signaling, where the field value indicates that a time-frequency resource of a P/SP CSI-RS resource associated with the CSI report configuration associated with the field value is punctured, a buffer of CSI measurements affected by the punctured CSI-RS resource is refreshed, and the current indication does not trigger corresponding CSI reporting, and when the at least one field value in the CSI report triggering field different from the prior art is indicated, the reporting of CSI corresponding to the CSI-RS resource associated with the field value is triggered.

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

The base station configures CSI report configuration #1 and CSI report configuration #2 and related parameters through RRC signaling. The configuration parameters of the CSI report configuration #1 include a CSI reporting type of AP CSI report, and MR of AP CSI report, and the CSI report configuration is associated with an AP CSI-RS resource; the configuration parameters of CSI report configuration #2 include a CSI reporting type P CSI report, and an MR OFF, and the CSI report configuration is associated with a P CSI-RS resource, and the periods and offsets of P CSI-RS and P CSI are shown in fig. 4. At this time, when the CSI reporting trigger field value in the first signaling received by the UE at the time 12ms is '01', and assuming that the effective time window is defined as 15ms, the UE refreshes the CSI buffer corresponding to the CSI report configuration #2 at the time 11ms, and abandons the CSI report at the time 14ms, and similarly, when the CSI reporting trigger field value in the first signaling received by the UE is '10', the UE reports the CSI corresponding to the CSI report configuration #1, and refreshes the CSI buffer corresponding to the CSI report configuration # 2; when the CSI reporting trigger field value in the first signaling received by the UE is '11', the UE reports the CSI corresponding to CSI report configuration # 2. When the value of the CSI reporting trigger field in the first signaling received by the UE is '00', the UE does not trigger CSI reporting. Specifically, table 3 shows an example of a jointly encoded CSI report triggering field.

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, so as to improve accuracy of CSI measurement and reporting, and further, the existing CSI report triggering field is only used for indicating triggering of aperiodic CSI reporting, and the joint coding scheme designed in the first coding scheme enables the CSI report triggering field to be used for not only indicating triggering of aperiodic CSI reporting, but also indicating refreshing of the CSI measurement buffer based on the punctured aperiodic/periodic CSI-RS resource, so as to save signaling overhead.

Coding scheme two

The first signaling may be jointly encoded with a CSI measurement request field, which, as already mentioned, is used to trigger a CSI-RS resource, which may be defined as the same CSI-RS resource as the slot where the field is located. The field value in the CSI measurement request field comprises a state indicating that no CSI-RS trigger exists, the rest field values are used for indicating the sending of the CSI-RS corresponding to at least one CSI-RS resource ID associated with the field value, and the association relation and the configuration base station of the CSI-RS resource are notified to the UE through RRC signaling.

In one possible design, in the embodiment of the present application, a P/SP CSI-RS resource ID is associated with at least one field value in the field, when a base station indicates a field value, it indicates that a P/SP CSI-RS resource corresponding to the P/SP CSI-RS resource ID associated with the field value is punctured, and after the UE obtains indication information of the field value, the buffer of CSI measurements related to the P/SP CSI-RS resource is refreshed; when the base station indicates the field value, the base station also indicates that corresponding CSI-RS is to be sent in the slot where the field value is located, and after the UE obtains the indication information of the field value, CSI measurement is carried out based on CSI-RS resource in the slot where the field value is located.

p1: the network equipment informs the UE of the configuration of a first CSI-RS resource, the configuration of a first CSI report and the incidence relation between the first CSI-RS resource and the configuration of the first CSI report, and informs the UE of the configuration of a second CSI-RS resource, the configuration of a second CSI report and the incidence relation between the second CSI-RS resource and the configuration of the second CSI report.

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

P3: the UE receives a first signaling sent by the network equipment, wherein the first signaling comprises at least one field value, and the at least one field value is used for indicating the UE to refresh the cache of the first CSI and trigger the second CSI-RS resource.

P4: the UE obtains second CSI according to the indication of the first signaling, the configuration of the second CSI-RS resource and the configuration of a second CSI report related to the second CSI-RS resource, and refreshes the cache of the first CSI.

Fig. 5 and table 4 show specific examples of the above implementation.

Assuming that the base station configures one CSI report configuration and is associated with 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 11ms is used, the CSI-RS #1 is punctured, and when the CSI reporting trigger field value received by the UE is '01' at 12ms, the UE refreshes the CSI measurement result corresponding to the CSI report configuration based on the interpretation of the field and performs CSI measurement based on the complemented CSI-RS #1 at 12 ms. Similarly, when the CSI report trigger field value received by the UE is '10', the UE receives the CSI-RS #1, performs channel measurement based on the CSI-RS #1, and calculates the CSI according to the CSI report configuration associated with the CSI-RS #1, and meanwhile, refreshes the measurement result of the CSI report configuration associated with the CSI-RS # 2; when a CSI reporting trigger field value received by UE is '11', the UE receives CSI-RS #1, performs channel measurement based on the CSI-RS #1 and calculates CSI according to CSI report configuration associated with the CSI-RS #1, and meanwhile, the UE receives CSI-RS #2, performs channel measurement based on the CSI-RS #2 and calculates CSI according to the CSI report configuration associated with the CSI-RS # 2; and when the CSI reporting 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 through the first signaling, so as to improve the accuracy of CSI measurement, and further, the CSI measurement request field is only used to indicate the triggering of the aperiodic CSI-RS resource, and the joint coding scheme designed in the second coding scheme enables the CSI measurement request to be used not only to indicate the triggering of the aperiodic CSI-RS resource, but also to indicate the refreshing of the CSI measurement buffer based on the punctured aperiodic/periodic CSI-RS resource.

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 (CSI request) field in the present application. The first signaling in the present application may be jointly encoded with the jointly encoded 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 CSI report associated with the CSI-RS resource corresponding to the CSI report configuration, and triggers the corresponding CSI-RS resource, but also indicates to refresh a buffer of CSI measurements corresponding to some CSI report configurations.

q1: the network equipment informs the UE of the configuration of a first CSI-RS resource, the configuration of a first CSI report and the incidence relation between the first CSI-RS resource and the configuration of the first CSI report, and informs the UE of the configuration of a second CSI-RS resource, the configuration of a second CSI report and the incidence relation between the second CSI-RS resource and the configuration of the second CSI report.

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

Q3: the UE receives a first signaling sent by the network equipment, wherein the first signaling comprises at least one field value, and the at least one field value is used for indicating the UE to refresh the cache of the first CSI, trigger the second CSI-RS resource and trigger the UE to report the second CSI.

Q4: and the UE obtains second CSI according to the indication of the first signaling, the configuration of the second CSI-RS resource and the configuration of a second CSI report associated with the second CSI-RS resource, reports the second CSI, and refreshes the cache of the first CSI, wherein the at least one field value in the first signaling triggers the second CSI-RS resource and triggers the UE to report the second CSI.

In one possible design, a base station informs, by indicating a certain field value in a first signaling of a UE, that some CSI reports corresponding to the field value are triggered, and the CSI-RS resource corresponding to the CSI report is triggered, and at the same time, informs the UE to refresh the buffers of the rest CSI corresponding to the field value.

Specifically, table 5 shows an example of a configuration of the joint coding multiplexing CSI request field. Assume that the base station configures the UE with CSI report configuration #1, and CSI-RS resources #1, CSI-RS resources #2, CSI report configuration #2, and CSI-RS resources #3, CSI-RS resources #4 associated therewith. When the CSI request field value received by the UE is '01', the UE refreshes a CSI cache corresponding to CSI report configuration # 1; when the CSI request field value received by the UE is '10', the UE receives CSI-RS #3, performs channel measurement based on the CSI-RS #3, calculates CSI according to CSI report configuration #2 associated with the CSI-RS #3, reports the CSI according to the CSI report configuration #2, and meanwhile refreshes a CSI cache corresponding to the CSI report configuration # 1; when the CSI request field value received by the UE is '11', the UE receives CSI-RS #4, performs channel measurement based on the CSI-RS #4, calculates CSI according to CSI report configuration #2 associated with the CSI-RS #4, reports the CSI according to the CSI report configuration #2, receives CSI-RS #1, performs channel measurement based on the CSI-RS #1, calculates CSI according to the CSI report configuration #1 associated with the CSI-RS #1, and reports the CSI according to the CSI report configuration # 1; when the CSI request field value 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 PI signaling, and at this time, at least one field value in the first signaling not only indicates to refresh data on some CSI-RS resources, but also indicates to refresh buffers of CSI measurements corresponding to some CSI report configurations. And the time domain resource occupied by the refreshed data is at least one OFDM symbol contained in the previous slot of the slot where the first signaling is located.

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

Table 6 is an example of the joint encoding of the first signaling and the P1 signaling, where a field value '0' indicates that the UE does not trigger the buffering of the refreshed CSI; the field value '1' indicates that the UE refreshes the buffer of the first CSI and refreshes the first data.

TABLE 6

Of course, the coding scheme of the first signaling is only an example, and the first signaling may be independently coded. Based on the above coding scheme, in this embodiment of the present application, the first signaling is further used to trigger one CSI-RS transmission, and at this time, the method for indicating channel measurement may include the following processes:

x1: the network equipment informs the UE of the configuration of a first CSI-RS resource, the configuration of a first CSI report and the incidence relation between the first CSI-RS resource and the configuration of the first CSI report, and informs the UE of the configuration of a third CSI-RS resource and the incidence relation between the third CSI-RS resource and the configuration of the first CSI report.

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

X3: the UE receives a first signaling sent by the network equipment, wherein the first signaling comprises at least one field value, and the at least one field value is used for indicating the UE to refresh the cache of the first CSI and trigger 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 one 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 a P/SP CSI-RS resource associated with the field value, i.e., a first CSI-RS resource, is punctured, and at the same time, an AP CSI-RS, i.e., a third CSI-RS resource, is sent in the same slot as the first signaling, where the time-frequency position and the number of the third CSI-RS resource are the same as the associated P/SP CSI-RS resource. And the UE acquires the related information of the third CSI-RS resource sent in the slot based on the first signaling, performs CSI measurement based on the third CSI-RS resource, and the obtained CSI measurement result is used for updating the CSI measurement result influenced by the punching of the P/SP CSI-RS resource.

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

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

In one possible design, the actual triggering of the acknowledgement feedback of the ACK/NACK is indicated by combining a Resource Allocation (RA) field indicating downlink in the first signaling. In a specific embodiment, as shown in fig. 7, when a base station indicates a field value of the first signaling, where the field value is associated with a CSI measurement buffer for refreshing at least one CSI report configuration, and information indicating a downlink resource allocation field in the first signaling is all 0 (indicating that a current slot does not perform resource allocation on the UE), a user considers that the first signaling triggers ACK/NACK reporting at the same time, and a reporting timing may be determined to be a latest uplink OFDM symbol by predefined or an OFDM symbol occupied by CSI reporting corresponding to the CSI report; when the base station indicates a certain field value of the first signaling, the field value is associated with a CSI measurement buffer for refreshing at least one CSI report configuration, and information indicating downlink resource allocation fields in the first signaling is not all 0 (indicating that the current slot allocates resources to the UE), the UE determines that the first signaling does not trigger an ACK/NACK feedback response, and the base station indirectly determines whether the UE correctly receives the first signaling through the ACK/NACK feedback fed back by the UE and associated with the PDSCH of the UE in the current slot.

Therefore, the accuracy and the reliability of the CSI measurement and the reported information of the UE can be improved, and the resource utilization rate of the network is further improved.

Based on the foregoing method embodiment, an embodiment of the present application further provides an indicating apparatus for channel measurement, where the indicating apparatus may perform the execution process of the UE shown in fig. 3, and referring to fig. 8, the indicating apparatus 800 includes: a transceiver unit 801 and a processing unit 802. Wherein the content of the first and second substances,

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

a processing unit 802, configured to obtain 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 transceiving unit 801 is further configured to receive a 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 instruct the processing unit 802 to refresh the buffering of the first CSI.

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

the processing unit 802 is further configured to obtain second CSI according to the configuration of the second CSI-RS resource and the configuration of a 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 the buffer of the first CSI;

the at least one field value included in the first signaling is further used to instruct the transceiver unit 801 to report the second CSI.

the processing unit 802 is further configured to obtain second CSI according to the configuration of the second CSI-RS resource and the configuration of a second CSI report associated with the second CSI-RS resource; obtaining 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 also 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 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 resource and to trigger the transceiver unit 801 to report the second CSI.

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

Optionally, the first CSI-RS resource is located in any one of first N OFDM symbols of an OFDM symbol where the first signaling is located, where 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 notified by the network device, and an association relationship between the third CSI-RS resource and the configuration of the first CSI report; receiving a third CSI-RS on the third CSI-RS resource;

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 also used to indicate that the third CSI-RS resource is triggered.

Optionally, the first signaling is further used to instruct the apparatus to feed back an acknowledgement of the first signaling;

the transceiving unit 801 is further configured to send an acknowledgement of the first signaling according to the first signaling.

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

It should be noted that, for the specific functional description of each unit, reference may be made to the channel measurement indication method provided in the embodiment, and details are not described here again. The division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

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

Based on the same inventive concept, an embodiment of the present application further provides a UE, where the UE may perform the method on the UE side in the foregoing method embodiment, with reference to fig. 9, the UE900 includes: a processor 901, a transceiver 902, and a memory 903. Wherein the content of the first and second substances,

a processor 901 for reading the program in the memory 903, and executing the following processes:

a processor 901, configured to control the transceiver 902 to receive a configuration of a first CSI-RS resource, a configuration of a first CSI-RS report, and an association relationship between the first CSI-RS resource and the configuration of the first CSI report, where the configuration is notified by a network device; obtaining first CSI according to the configuration of the first CSI-RS resource and the configuration of a first CSI report associated with the first CSI-RS resource; the control transceiver 902 receives a 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 instruct the processing unit to refresh the buffering of the first CSI.

The storage 903 may store data used by the processor 901 during execution of operations, and the storage 903 may be a magnetic disk storage, a CD-ROM, an optical storage, or an internal memory of a physical host carrying a resource control network element, such as a hard disk, a usb disk, a Secure Digital (SD) card, and the like.

In a specific embodiment, the functions of the transceiver unit 801 in fig. 8 may be implemented by the transceiver 902 in fig. 9, and the functions of the processing unit 802 in fig. 8 may be implemented by the processor 901 in fig. 9.

The present embodiment also provides a computer storage medium for storing computer software instructions for the UE of the above embodiments, which contains a program designed to execute the above embodiments.

Based on the foregoing method embodiment, an embodiment of the present application further provides an indicating apparatus for channel measurement, where the indicating apparatus may perform an execution process of the network device shown in fig. 3, and referring to fig. 10, the indicating apparatus 1000 includes: a transceiver 1001 and a processor 1002. Wherein the content of the first and second substances,

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

a transceiver unit 1001, configured to notify the UE of configuration of the first CSI-RS resource, and an association relationship between the first CSI-RS resource and the configuration of the first CSI report;

the transceiving unit 1001 is further configured to send a first signaling to the UE, where the first signaling includes at least one field value, where the field value is used to instruct the UE to refresh a buffer of first CSI, where the first CSI is obtained by the UE according to the configuration of the first CSI-RS resource and the 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 an association relationship 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 for instructing the UE to report a second CSI, where the second CSI is obtained by the UE according to the configuration of the second CSI-RS resource and the configuration of a second CSI report associated with the second CSI-RS resource.

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

Optionally, the at least one field value included in the first signaling is further used to indicate that the cache of the first data is refreshed; wherein, the time domain resource occupied by the first data is at least one OFDM symbol contained in the previous slot of the slot where the first signaling is located.

Optionally, the transceiver 1001 further uses:

informing the UE of the configuration of a third CSI-RS resource and the incidence relation 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 also used to indicate that a third CSI-RS resource is triggered.

Optionally, the first signaling is further configured to trigger an acknowledgement of the first signaling;

the transceiving unit 1001 is further configured to receive an acknowledgement of the first signaling.

Based on the same inventive concept, an embodiment of the present application further provides a network device, where the network device may perform the method on the network device or the base station side in the foregoing method embodiment, referring to fig. 11, a network device 1100 includes: a processor 1101, a transceiver 1102, and a memory 1103. Wherein the content of the first and second substances,

a processor 1101 for reading the program in the memory 1103 and executing the following processes:

a processor 1101, configured to allocate a first channel state information reference signal, CSI-RS, resource for a user equipment, UE; the control transceiver 1102 informs the UE of the configuration of the first CSI-RS resource, the configuration of the first CSI-RS report, and the association relationship between the first CSI-RS resource and the configuration of the first CSI report; controlling a transceiver 1102 to send first signaling to the UE, wherein the first signaling comprises at least one field value, and the field value is used for instructing the UE to refresh a buffer of first CSI, and the first CSI is obtained by the UE according to the configuration of the first CSI-RS resource and the configuration of a first CSI report associated with the first CSI-RS resource.

The memory 1103 may store data used by the processor 1101 when performing operations, and the memory 1103 may be a magnetic disk memory, a CD-ROM, an optical memory, or an internal memory of a physical host carrying the resource control network element, such as a hard disk, a usb disk, a Secure Digital (SD) card, and the like.

In a specific embodiment, the functions of the transceiver unit 1001 in fig. 10 may be implemented by the transceiver 1102 in fig. 11, and the functions of the processing unit 1002 in fig. 10 may be implemented by the processor 1101 in fig. 11.

The present embodiment also provides a computer storage medium for storing computer software instructions for the network device or the base station of the foregoing embodiments, which contains a program designed to execute the foregoing embodiments.

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

Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

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

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

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

Claims

1. A method for indicating channel measurements, comprising:

the method comprises the steps that User Equipment (UE) receives configuration of a first channel state information reference signal (CSI-RS) resource, configuration of a first CSI report and an incidence relation between the first CSI-RS resource and the configuration of the first CSI report, wherein the configuration of the first CSI-RS resource is notified by network equipment;

the UE obtains first CSI according to the configuration of the first CSI-RS resource and the configuration of a first CSI report related to the first CSI-RS resource;

the UE receives a first signaling sent by the network equipment, wherein the first signaling comprises at least one field value, and the at least one field value is used for indicating the UE to refresh the cache of the first CSI;

wherein the at least one field value relates to a configuration of a plurality of CSI reports; the configuration of the plurality of CSI reports includes a configuration of the first CSI report; or

The at least one field value is associated with at least one periodic CSI-RS resource; the first signaling is to indicate that one or more of the at least one periodic CSI-RS resources are punctured; or

The at least one field value is associated with at least one semi-static CSI-RS resource; the first signaling is to indicate that one or more of the at least one semi-static CSI-RS resource is punctured.

2. The method of claim 1, wherein the UE further receives a configuration of a second CSI-RS resource, a configuration of a second CSI report, and an association of the second CSI-RS resource with the configuration of the second CSI report, as notified by the network device;

the UE obtains second CSI according to the configuration of the second CSI-RS resource and the configuration of a second CSI report related to the second CSI-RS resource;

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

the at least one field value included in the first signaling is further used to instruct the UE to report the second CSI.

3. The method of claim 1, wherein the UE further receives a configuration of a second CSI-RS resource, a configuration of a second CSI report, and an association of the second CSI-RS resource with the configuration of the second CSI report, as notified by the network device;

the UE obtains second CSI according to the indication of the first signaling, and refreshes the cache of the first CSI;

4. The method of claim 1, wherein the UE further receives a configuration of a second CSI-RS resource, a configuration of a second CSI report, and an association of the second CSI-RS resource with the configuration of the second CSI report, as notified by the network device;

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

the at least one field value included in the first signaling is further used for triggering the second CSI-RS resource and triggering the UE to report the second CSI.

5. The method of claim 1, wherein the UE refreshes the buffer of the first CSI according to the indication of the first signaling, refreshes the buffer of the first data; wherein, the time domain resource occupied by the first data is at least one OFDM symbol contained in the previous slot of the slot where the first signaling is located.

6. The method of any one of claims 1-5, wherein the first CSI-RS resource is located in any one of first N OFDM symbols of an Orthogonal Frequency Division Multiplexing (OFDM) symbol in which the first signaling is located, where N is a positive integer greater than or equal to 1.

7. The method of any one of claims 1-5, further comprising:

the UE also receives the configuration of a third CSI-RS resource notified by the network equipment and the incidence relation between the third CSI-RS resource and the configuration of the first CSI report;

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

the UE obtains the first CSI based on the third CSI-RS;

8. The method of any of claims 1-5, wherein the first signaling is further used to instruct the UE to feed back an acknowledgement of the first signaling;

and the UE also sends a response of the first signaling according to the first signaling.

9. The method according to any of claims 1-5, wherein the first signaling is carried in downlink control information, DCI, or in a media access control element, MAC CE.

10. A method for indicating channel measurements, comprising:

the network equipment allocates a first channel state information reference signal (CSI-RS) resource for User Equipment (UE);

the network equipment informs the UE of the configuration of the first CSI-RS resource, the configuration of the first CSI report and the incidence relation between the first CSI-RS resource and the configuration of the first CSI report;

the network equipment sends first signaling to the UE, wherein the first signaling comprises at least one field value, the field value is used for indicating the UE to refresh the cache of first CSI, and the first CSI is obtained by the UE according to the configuration of the first CSI-RS resource and the configuration of a first CSI report associated with the first CSI-RS resource;

11. The method of claim 10, wherein the network device informs the UE of a configuration of a second CSI-RS resource, a configuration of a second CSI report, and an association of the second CSI-RS resource with the configuration of the second CSI report;

12. The method of claim 10, wherein the network device informs the UE of a configuration of a second CSI-RS resource, a configuration of a second CSI report, and an association of the second CSI-RS resource with the configuration of the second CSI report;

13. The method of claim 10, wherein the network device informs the UE of a configuration of a second CSI-RS resource, a configuration of a second CSI report, and an association of the second CSI-RS resource with the configuration of the second CSI report;

14. The method of claim 10, wherein the at least one field value included in the first signaling is further for indicating that a cache of first data is refreshed; wherein, the time domain resource occupied by the first data is at least one OFDM symbol contained in the previous slot of the slot where the first signaling is located.

15. The method of any of claims 10-14, wherein the first CSI-RS resource is located in any one of the first N OFDM symbols of an orthogonal frequency division multiplexing OFDM symbol in which the first signaling is located, N being a positive integer greater than or equal to 1.

16. The method of any one of claims 10-14, further comprising:

the network equipment informs the UE of the configuration of a third CSI-RS resource and the incidence relation between the third CSI-RS resource and the configuration of a first CSI report;

the network device transmits a third CSI-RS on the third CSI-RS resource; the field value included in the first signaling is also used to indicate that a third CSI-RS resource is triggered.

17. The method of any of claims 10-14, wherein the first signaling is further used to trigger an acknowledgement of the first signaling;

the network device receives an acknowledgement of the first signaling.

18. The method according to any of claims 10-14, wherein the first signaling is carried in downlink control information, DCI, or in a medium access control element, MAC CE.

19. An apparatus for indicating channel measurements, comprising:

the receiving and sending unit is used for receiving configuration of a first channel state information reference signal (CSI-RS) resource, configuration of a first CSI report and an incidence relation between the first CSI-RS resource and the configuration of the first CSI report, wherein the configuration of the first CSI-RS resource is notified by network equipment;

a processing unit, configured to obtain 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 transceiving unit is further configured to receive a 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 instruct the processing unit to refresh the buffer of the first CSI;

20. The apparatus of claim 19, wherein the transceiver unit is further configured to receive a configuration of a second CSI-RS resource, a configuration of a second CSI report, and an association relationship of the second CSI-RS resource and the configuration of the second CSI report, which are notified by the network device;

the processing unit is further configured to obtain second CSI according to the configuration of the second CSI-RS resource and the configuration of a 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 included in the first signaling is further used to instruct the transceiver unit to report the second CSI.

21. The apparatus of claim 19, wherein the transceiver unit is further configured to receive a configuration of a second CSI-RS resource, a configuration of a second CSI report, and an association relationship of the second CSI-RS resource and the configuration of the second CSI report, which are notified by the network device;

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

22. The apparatus of claim 19, wherein the transceiver unit is further configured to receive a configuration of a second CSI-RS resource, a configuration of a second CSI report, and an association relationship of the second CSI-RS resource and the configuration of the second CSI report, which are notified by the network device;

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 the 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 resource and to trigger the transceiver unit to report the second CSI.

23. The apparatus of claim 19, wherein the processing unit is further configured to refresh the buffering of the first CSI in accordance with the indication of the first signaling, refresh the buffering of first data; wherein, the time domain resource occupied by the first data is at least one OFDM symbol contained in the previous slot of the slot where the first signaling is located.

24. The apparatus of any of claims 19-23, wherein the first CSI-RS resource is located in any one of the first N OFDM symbols of an orthogonal frequency division multiplexing OFDM symbol in which the first signaling is located, N being a positive integer greater than or equal to 1.

25. The apparatus of any one of claims 19-23, wherein the transceiver unit is further configured to receive a configuration of a third CSI-RS resource notified by the network device and an association relationship of the third CSI-RS resource with the 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;

26. The apparatus of any of claims 19-23, wherein the first signaling is further for instructing the apparatus to feed back an acknowledgement of the first signaling;

the transceiver unit is further configured to send an acknowledgement of the first signaling according to the first signaling.

27. The apparatus according to any of claims 19-23, wherein the first signaling is carried in downlink control information, DCI, or in a medium access control element, MAC CE.

28. An apparatus for indicating channel measurements, comprising:

the processing unit is used for allocating a first channel state information reference signal (CSI-RS) resource for User Equipment (UE);

a transceiver unit, configured to notify the UE of a configuration of the first CSI-RS resource, a configuration of the first CSI-RS report, and an association relationship between the first CSI-RS resource and the configuration of the first CSI report;

the transceiver unit is further configured to send a first signaling to the UE, where the first signaling includes at least one field value, where the field value is used to instruct the UE to refresh a buffer of first CSI, where the first CSI is obtained by the UE according to the configuration of the first CSI-RS resource and the configuration of a first CSI report associated with the first CSI-RS resource;

29. The apparatus of 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 an association of the second CSI-RS resource with the configuration of the second CSI report;

30. The apparatus of 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 an association of the second CSI-RS resource with the configuration of the second CSI report;

31. The apparatus of 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 an association of the second CSI-RS resource with the configuration of the second CSI report;

32. The apparatus of claim 28, wherein the at least one field value included in the first signaling is further for indicating that a cache of first data is flushed; wherein, the time domain resource occupied by the first data is at least one OFDM symbol contained in the previous slot of the slot where the first signaling is located.

33. The apparatus of any one of claims 28-32, wherein the first CSI-RS resource is located in any one of the first N OFDM symbols of an orthogonal frequency division multiplexing OFDM symbol in which the first signaling is located, N being a positive integer greater than or equal to 1.

34. The apparatus of any of claims 28-32, wherein the transceiver unit is further to:

35. The apparatus of any of claims 28-32, wherein the first signaling is further for triggering an acknowledgement of the first signaling;

the transceiver unit is further configured to receive an acknowledgement of the first signaling.

36. The apparatus according to any of claims 28-32, wherein the first signaling is carried in downlink control information, DCI, or in a medium access control element, MAC CE.