CN110661556A

CN110661556A - Method and communication device for transmitting and receiving channel state information

Info

Publication number: CN110661556A
Application number: CN201810696122.7A
Authority: CN
Inventors: 施弘哲; 金黄平; 毕晓艳
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-06-29
Filing date: 2018-06-29
Publication date: 2020-01-07
Anticipated expiration: 2038-06-29
Also published as: WO2020001577A1; CN110661556B

Abstract

The application provides a method and a communication device for transmitting and receiving channel state information. The method comprises the following steps: the terminal device generates and transmits one or more CSIs to the network device. Each CSI comprises one or more sets of measurement reports, each set of measurement reports is measured based on the reference signal received by one spatial receiving filter, and the spatial receiving filters corresponding to the measurement reports are different from each other when the total number of the measurement reports is multiple. Because the terminal equipment can report the measurement report based on different space receiving filters, the network equipment can acquire more information of the corresponding relation between the transmitting wave beam and the receiving wave beam, so that the wave beam management can be more reasonably carried out, and the system performance can be improved. When the terminal equipment reports the measurement report based on the plurality of spatial receiving filters, the network equipment can acquire more corresponding relations between the transmitting beams and the receiving beams, the robustness of the beam pairing relation is improved, and the anti-interference performance is improved.

Description

Method and communication device for transmitting and receiving channel state information

Technical Field

The present application relates to the field of wireless communications, and more particularly, to a method and communication apparatus for transmitting and receiving channel state information.

Background

In some communication systems, for example, new radio access technology (NR) of a fifth generation (5th generation, 5G) communication system, in order to combat path loss in a high frequency scenario, a transmitting end and a receiving end may respectively obtain gains through beamforming. The transmitting end and the receiving end can acquire the pairing relationship between the transmitting beam and the receiving beam through beam training, and the receiving end can report part of reference signal resources with larger reference signal receiving power to the transmitting end, so that the transmitting end can transmit and receive signals by adopting the beam pairing relationship with better channel quality when transmitting data or signaling.

However, in some scenarios, such as a multi-user multi-input multi-output (MU-MIMO) scenario, the network device may want to obtain more information about beam pairing in order to perform beam management more reasonably and obtain beamforming gain to a greater extent.

Disclosure of Invention

The application provides a method and a communication device for sending and receiving channel state information, which aim to acquire more corresponding relations between a transmitting beam and a receiving beam so as to more reasonably manage the beams and further acquire the gain of beam forming to a greater extent.

In a first aspect, a method of transmitting Channel State Information (CSI) is provided. The method comprises the following steps: generating one or more CSI (channel state information), wherein each CSI comprises one or more groups of measurement reports, each group of measurement reports are obtained by measuring based on a reference signal received by one spatial receiving filter, and under the condition that the total number of the measurement reports is multiple groups, the plurality of spatial receiving filters corresponding to each group of measurement reports are different from each other; transmitting the one or more CSIs.

The method of the first aspect may be executed by a terminal device, and may also be executed by a chip configured in the terminal device, which is not limited in this application.

In a second aspect, a method of receiving CSI is provided. The method comprises the following steps: receiving one or more CSI (channel state information), wherein each CSI comprises one or more groups of measurement reports, each group of measurement reports are obtained by measuring based on a reference signal received by one spatial receiving filter, and a plurality of spatial receiving filters corresponding to each group of measurement reports are different from each other; and determining that each group of measurement reports corresponds to one spatial receiving filter according to the one or more CSI, wherein the spatial receiving filters corresponding to the groups of measurement reports are different from each other under the condition that a plurality of groups of measurement reports are received.

The method of the second aspect may be executed by a network device, or may be executed by a chip configured in the network device, which is not limited in this application.

It should be understood that the spatial receive filter described above may be understood as a receive beam. Accordingly, the spatial transmit filter can be understood as a transmit beam.

Based on the technical scheme, the terminal equipment can perform channel measurement and report based on the reference signal received by each receiving beam, so that the network equipment can acquire more information about the pairing relationship between the transmitting beam and the receiving beam. The network device can more reasonably manage the wave beam according to the wave beam pairing relation, thereby obtaining the gain of wave beam forming to a greater extent. In addition, the network device can select the transmitting beams corresponding to different receiving beams to communicate with different terminal devices according to the pairing relationship between the transmitting beams and the receiving beams, so that the interference among multiple users can be avoided to the greatest extent, namely, the anti-interference performance is improved. Overall, system performance is advantageously improved.

Optionally, each set of measurement reports may include at least one or more of: an identity of at least one reference signal resource, and at least one Reference Signal Received Power (RSRP) information.

The reference signal resource may be used to configure a transmission attribute of the reference signal. Each reference signal resource may correspond to one or more reference signals, and the one or more reference signals may be transmitted on the same time-frequency resource. The reference signal received power information is used to indicate the received power of the reference signal, and may be reported in an absolute value or a differential manner, for example. This is not limited in this application.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: receiving first indication information, wherein the first indication information is used for indicating a first reporting mode, and the first reporting mode is packet reporting based on a spatial receiving filter.

Accordingly, with reference to the second aspect, in certain implementations of the second aspect, the method further comprises: and sending first indication information, wherein the first indication information is used for indicating a first reporting mode, and the first reporting mode is packet reporting based on a spatial receiving filter.

The terminal device may perform channel measurement and reporting based on the reference signal received by each spatial receiving filter according to the received first indication information, so as to report a measurement report corresponding to one or more spatial receiving filters to the network device, so that the network device obtains a corresponding relationship between a receiving beam and a transmitting beam.

With reference to the first aspect or the second aspect, in some possible implementation manners, the first indication information is carried in a CSI reporting configuration (CSI report setting) of a Radio Resource Control (RRC) message, or the first indication information is carried in a packet reporting parameter of the CSI reporting configuration.

With reference to the first aspect or the second aspect, in some possible implementations, the first indication information is carried in one or more of the following: RRC message, Media Access Control (MAC) Control Element (CE), and Downlink Control Information (DCI).

It should be understood that the several possible implementation manners listed above for sending the first indication information are only examples, and should not constitute any limitation to the present application, and the first indication information may also be carried by other signaling, which is not limited in the present application.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: receiving second indication information, wherein the second indication information is used for indicating one or more of the following parameters:

parameter 1, the number of sets of measurement reports reported by each CSI;

parameter 2, the total group number of measurement reports reported by a plurality of CSI; and

and 3, reporting the number of the CSI when the measurement report is reported through a plurality of CSI.

Accordingly, with reference to the second aspect, in certain implementations of the second aspect, the method further comprises: sending second indication information, wherein the second indication information is used for indicating one or more of the following parameters:

parameter 1, the number of sets of measurement reports reported by each CSI;

Specifically, the terminal device may report CSI to the network device in the following four ways:

reporting a CSI (channel state information), wherein the CSI comprises a group of measurement reports; or

Reporting a CSI, wherein the CSI comprises a plurality of groups of measurement reports; or

Reporting a plurality of CSI, wherein each CSI comprises a group of measurement reports; or

And fourthly, reporting a plurality of CSI, wherein each CSI comprises a plurality of groups of measurement reports.

When the terminal equipment adopts the first mode or the second mode, the CSI can be reported to the network equipment according to the parameter 1; when the terminal equipment adopts the third mode, the CSI can be reported to the network equipment according to the parameter 2 or the parameter 3; and when the terminal equipment adopts the fourth mode, the CSI can be reported to the network equipment according to any two of the parameter 1, the parameter 2 and the parameter 3.

When the terminal device reports the CSI in any one of the second to fourth modes, the network device may obtain a measurement report obtained based on measurement of the multiple receiving beams, that is, may obtain a corresponding relationship between the multiple receiving beams and the transmitting beam, so that robustness of a beam pairing relationship may be improved, robustness of a communication system may be improved, and meanwhile, transmission efficiency and user experience may be improved.

It should be understood that the above listed parameters 1, 2 and 3 may be indicated by the network device, or may be predefined, such as protocol definition, and this application is not limited thereto.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: sending second indication information, wherein the second indication information is used for indicating one or more of the following items:

sending capability information, the capability information indicating one or more of the following parameters:

parameter i, number of spatial receiving filters;

parameter ii, maximum group number of measurement reports reported by each CSI;

parameter iii, the maximum value of the total group number of measurement reports reported by the multiple CSI; and

parameter iv, the maximum number of CSI when reporting measurement reports via multiple CSI.

Accordingly, with reference to the second aspect, in certain implementations of the second aspect, the method further comprises: receiving second indication information, the second indication information indicating one or more of:

parameter i, number of spatial receiving filters;

parameter ii, maximum group number of measurement reports reported by each CSI;

The network device may determine the parameters 1 to 3 listed above according to the capability information reported by the terminal device. In other words, when the above-mentioned parameter 1 to parameter 3 are indicated to the terminal device by the network device, the above-mentioned parameter 1 to parameter 3 may be determined according to the capability of the terminal device.

With reference to the first aspect or the second aspect, in some implementations, each set of measurement reports further includes a set identifier, and each set identifier corresponds to one spatial reception filter.

By carrying the group identification in the measurement report, the network device can conveniently know the corresponding relation between each group of measurement report and the receiving wave beam, and also conveniently know the corresponding relation between the transmitting wave beam and the receiving wave beam, and is also beneficial to more reasonably managing the wave beam by the network device, thereby obtaining the gain of wave beam forming to a greater extent and being beneficial to improving the system performance.

With reference to the first or second aspect, in certain implementations, the set of correspondences identified for the spatial receive filter is unchanged for a predetermined period of time.

Wherein the predetermined period of time is any one of:

the time interval of two CSI reports satisfies the following conditions: reporting under the same CSI reporting configuration, or reporting under the CSI reporting configuration with the same time domain behavior parameters;

a time interval of two reference signal transmissions, the two reference signal transmissions satisfying: configuring transmission based on the same reference signal resource, or configuring transmission based on the same reference signal resource set, or configuring transmission based on the same reference signal resource, or configuring transmission based on reference signal resources with the same time domain behavior parameters;

a time interval from enabling to reconfiguring of CSI reporting configuration;

one CSI resource configures a time interval from enabling to reconfiguring;

a CSI reporting configuration time interval from enabling to releasing;

a time interval from enabling to releasing of one CSI resource configuration;

a specified length after a CSI reporting configuration is enabled; or

A specified length after one CSI resource configuration is enabled.

It will be appreciated that the foregoing lists several possible definitions of the predetermined time period, but this should not constitute any limitation to the present application. Further, the predetermined period of time is specifically which one of the above listed items may be predefined by the protocol or may be indicated by the network device. This is not limited in this application.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: and receiving fourth indication information, wherein the fourth indication information is used for indicating the starting time and the length of the preset time period.

Accordingly, with reference to the second aspect, in certain implementations of the second aspect, the method further comprises: and sending fourth indication information, wherein the fourth indication information is used for indicating the starting time and the length of the preset time period.

After determining which of the above listed predetermined period of time, the network device may further indicate to the terminal device the start time and length of the predetermined period of time. It should be understood that the network device may also indicate to the terminal device the start time and the end time, or the end time and the length, of the predetermined period of time. When the terminal device knows any two of the starting time, the length and the ending time, the other item can be calculated, so that when the network device indicates any two of the starting time, the length and the ending time of the preset time period to the terminal device through the third indication information, the network device is within the protection scope of the application.

It should be understood that the predetermined time period may be indicated to the terminal device by the network device, or may be predefined, such as defined by a protocol, which is not limited in this application.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: and receiving third indication information, wherein the third indication information is used for indicating a plurality of reference signal resources, and the plurality of reference signal resources are determined by at least two groups of measurement reports.

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: and transmitting third indication information, wherein the third indication information is used for indicating a plurality of reference signal resources, and the plurality of reference signal resources are determined by at least two groups of the measurement reports.

It should be understood that the plurality of reference signal resources indicated by the third indication information may be used for beam diversity quality monitoring. The network device may configure the terminal device with reference signal resources corresponding to the plurality of received beams based on the plurality of sets of measurement reports reported by the terminal device, so that the terminal device performs beam diversity quality monitoring based on the plurality of received beams. Therefore, when the terminal device tilts or overturns to cause the reception quality of part of the reception beams to be reduced, other reception beams can be used for evaluating the wireless link quality. Therefore, failure recovery of frequent beam entering can be avoided, and the robustness of the beam pairing relationship can be improved, so that the robustness of a transmission system can be improved, and the user experience can be improved.

With reference to the first aspect or the second aspect, in some implementations, the plurality of reference signal resources indicated by the third indication information correspond to a plurality of spatial reception filters in a one-to-one manner.

That is, each reference signal resource corresponds to one spatial receive filter.

With reference to the first aspect or the second aspect, in some implementations, the plurality of reference signal resources indicated by the third indication information includes a first resource group and a second resource group, where only measurement results of reference signals in the first resource group account for statistics of beam failure times.

Specifically, the number of the plurality of reference signal resources indicated by the third indication information may be I (I > 0 and I is an integer), and the I reference signal resources may correspond to J (I > J > 0 and J is an integer) spatial receiving filters. The second resource group can include L (L is more than or equal to J > 0 and L is an integer) reference signal resources, and the first resource group can include I-L reference signal resources. The L reference signal resources in the second set of resources may correspond to J spatial receive filters, and the I-L reference signal resources in the first set of resources may correspond to at least one of the J spatial receive filters.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: fifth indication information is received, the fifth indication information indicating a plurality of reference signal resources in the second resource group.

Accordingly, with reference to the second aspect, in certain implementations of the second aspect, the method further comprises: and transmitting fifth indication information, wherein the fifth indication information is used for indicating a plurality of reference signal resources in the second resource group.

Specifically, the fifth indication information may be used to indicate the number of the plurality of reference signal resources in the second resource group, or may also be used to indicate the identities or indexes of the plurality of reference signal resources in the second resource group. This is not limited in this application.

And indicating the plurality of reference signal resources in the second resource group to the terminal equipment through the network equipment, so that the terminal equipment is convenient to avoid the plurality of reference signal resources in the second resource group from being counted in the beam failure times when carrying out beam failure monitoring.

In a third aspect, a method of receiving a reference signal is provided. The method comprises the following steps: and receiving third indication information, wherein the third indication information is used for indicating a plurality of reference signal resources, and the plurality of reference signal resources are determined by at least two groups of measurement reports.

The method of the third aspect may be executed by a terminal device, or may be executed by a chip configured in the terminal device, which is not limited in this application.

In a fourth aspect, a method of transmitting a reference signal is provided. The method comprises the following steps: and transmitting third indication information, wherein the third indication information is used for indicating a plurality of reference signal resources, and the plurality of reference signal resources are determined by at least two groups of the measurement reports.

The method of the fourth aspect may be executed by a network device, or may be executed by a chip configured in the network device, which is not limited in this application.

It should be understood that the plurality of reference signal resources indicated by the third indication information may be used for beam diversity quality monitoring. The network device may configure reference signal resources corresponding to the multiple reception beams for the terminal device based on the multiple sets of measurement reports reported by the terminal device, so that the terminal device performs beam diversity quality monitoring based on the multiple reception beams.

Therefore, when the terminal device tilts or overturns to cause the reception quality of part of the reception beams to be reduced, other reception beams can be used for evaluating the wireless link quality. Therefore, failure recovery of frequent beam entering can be avoided, and the robustness of the beam pairing relationship can be improved, so that the robustness of a transmission system can be improved, and the user experience can be improved.

With reference to the third aspect or the fourth aspect, in some possible implementations, the plurality of reference signal resources indicated by the third indication information correspond to a plurality of spatial receiving filters in a one-to-one manner.

With reference to the third aspect or the fourth aspect, in some implementations, the plurality of reference signal resources indicated by the third indication information includes a first resource group and a second resource group, where only measurement results of reference signals in the first resource group account for statistics of beam failure times.

With reference to the third aspect, in certain implementations of the third aspect, the method further includes: fifth indication information is received, the fifth indication information indicating a plurality of reference signal resources in the second resource group.

Accordingly, with reference to the fourth aspect, in certain implementations of the fourth aspect, the method further comprises: and transmitting fifth indication information, wherein the fifth indication information is used for indicating a plurality of reference signal resources in the second resource group.

In a fifth aspect, a method of transmitting CSI is provided. The method comprises the following steps: generating CSI, wherein the CSI comprises one or more groups of measurement information, each group of measurement information is measured based on a plurality of reference signals which can be received simultaneously, and each group of measurement information at least comprises a first indication bit for indicating the number of spatial receiving filters for receiving the plurality of reference signals; and transmitting the CSI.

The method of the fifth aspect may be executed by a terminal device, or may be executed by a chip configured in the terminal device, which is not limited in this application.

In a sixth aspect, a method of receiving CSI is provided. The method comprises the following steps: receiving CSI, wherein the CSI comprises one or more groups of measurement information, each group of measurement information is measured based on a plurality of reference signals which can be received simultaneously, and each group of measurement information at least comprises a first indication bit which is used for indicating the number of spatial receiving filters for receiving the plurality of reference signals; and determining whether a plurality of reference signals indicated by each group of measurement information are received by the same spatial receiving filter according to the CSI.

The method of the sixth aspect may be executed by a network device, or may be executed by a chip configured in the network device, which is not limited in this application.

Based on the above technical solution, the terminal device may carry an indication bit for indicating the number of spatial receiving filters receiving a plurality of reference signals when reporting CSI based on the plurality of reference signals that can be received simultaneously, so that the network device may obtain more information about the correspondence between the reference signal resources and the spatial receiving filters, that is, may obtain more information about the pairing relationship between the receiving beams and the transmitting beams.

In one possible design, the first indication bit may be used to indicate whether the multiple reference signals are received by the same spatial reception filter. The protocol may be predefined, and when the multiple reference signals are received by the same spatial reception filter, the measurement results of the multiple reference signals may be reported. Then optionally the plurality of reference signals corresponds to a spatial receive filter. When the multiple reference signals are received by multiple spatial receive filters, a measurement of one reference signal may be reported based on each spatial receive filter. Then optionally, the plurality of reference signals are in one-to-one correspondence with the plurality of spatial reception filters.

Therefore, the network device can determine the corresponding relationship between the reference signal and the spatial receiving filter according to the first indication bit and the measurement result of the received multiple reference signals, and also can determine the corresponding relationship between the transmitting beam and the receiving beam. And, when the plurality of reference signals are received by the plurality of spatial receive filters, the network device may acquire the correspondence between the plurality of transmit beams and the receive beam. Therefore, when the terminal equipment tilts or overturns to cause that the TCI state list corresponding to a certain receiving beam is invalid, the terminal equipment can be switched to other receiving beams with better link quality, so that the frequent triggering of the beam failure recovery process can be avoided. Therefore, the robustness of the beam pairing relation is improved, the robustness of a transmission system is improved, the transmission efficiency is improved, and the user experience is improved.

Optionally, each set of measurement information includes the first indication bit and a plurality of measurement results, where each measurement result may include one or more of the following: identification of reference signal resources and reference signal received power information.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the method further comprises: and receiving sixth indication information, wherein the sixth indication information is used for indicating a second reporting mode, and the second reporting mode is packet reporting based on reference signals which can be received simultaneously.

Accordingly, with reference to the sixth aspect, in certain implementations of the sixth aspect, the method further comprises: and sending sixth indication information, wherein the sixth indication information is used for indicating a second reporting mode, and the second reporting mode is packet reporting based on reference signals which can be received simultaneously.

The terminal device may perform channel measurement and reporting based on the multiple reference signals received at the same time according to the received sixth indication information, and report the number of spatial receiving filters that receive the multiple reference signals at the same time to the network device, so that the network device obtains a corresponding relationship between the receiving beam and the transmitting beam.

With reference to the fifth aspect or the sixth aspect, in some implementation manners, the sixth indication information is carried in a CSI reporting configuration of an RRC message, or the sixth indication information is carried in a packet reporting parameter of the CSI reporting configuration.

With reference to the fifth aspect or the sixth aspect, in some implementations, the sixth indication information is carried in one or more of: RRC message, MAC CE, and DCI.

It should be understood that the several possible implementation manners listed above for sending the sixth indication information are only examples, and should not constitute any limitation to the present application, and the first indication information may also be carried by other signaling, which is not limited in the present application.

In a seventh aspect, a communication device is provided that includes various means or units for performing the method of the first, third, or fifth aspect and any one of the possible implementations of the first, third, or fifth aspect.

In an eighth aspect, a communications apparatus is provided that includes a processor. The processor is coupled to the memory and is operable to execute the instructions in the memory to implement the method of any of the possible implementations of the first, third or fifth aspect. Optionally, the communication device further comprises a memory. Optionally, the communication device further comprises a communication interface, the processor being coupled to the communication interface.

In one implementation, the communication device is a terminal device. When the communication device is a terminal device, the communication interface may be a transceiver, or an input/output interface.

In another implementation, the communication device is a chip configured in the terminal equipment. When the communication device is a chip configured in a terminal device, the communication interface may be an input/output interface.

Alternatively, the transceiver may be a transmit-receive circuit. Alternatively, the input/output interface may be an input/output circuit.

In a ninth aspect, there is provided a communications apparatus comprising means for performing the method of the second, fourth or sixth aspect, and any possible implementation manner of the second, fourth or sixth aspect.

In a tenth aspect, a communication device is provided that includes a processor. The processor is coupled to the memory and is operable to execute the instructions in the memory to implement the method of any of the possible implementations of the second, fourth or sixth aspect. Optionally, the communication device further comprises a memory. Optionally, the communication device further comprises a communication interface, the processor being coupled to the communication interface.

In one implementation, the communication device is a network device. When the communication device is a network device, the communication interface may be a transceiver, or an input/output interface.

In another implementation, the communication device is a chip configured in the network device. When the communication device is a chip configured in a network device, the communication interface may be an input/output interface.

In an eleventh aspect, a processor is provided, including: input circuit, output circuit and processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor performs the method of any one of the possible implementations of the first to sixth aspects and the first to sixth aspects.

In a specific implementation process, the processor may be a chip, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a flip-flop, various logic circuits, and the like. The input signal received by the input circuit may be received and input by, for example and without limitation, a receiver, the signal output by the output circuit may be output to and transmitted by a transmitter, for example and without limitation, and the input circuit and the output circuit may be the same circuit that functions as the input circuit and the output circuit, respectively, at different times. The embodiment of the present application does not limit the specific implementation manner of the processor and various circuits.

In a twelfth aspect, a processing apparatus is provided that includes a processor and a memory. The processor is configured to read instructions stored in the memory, and may receive a signal via the receiver and transmit a signal via the transmitter to perform the method of any one of the possible implementations of the first to sixth aspects and the first to sixth aspects.

Optionally, the number of the processors is one or more, and the number of the memories is one or more.

Alternatively, the memory may be integral to the processor or provided separately from the processor.

In a specific implementation process, the memory may be a non-transient memory, such as a Read Only Memory (ROM), which may be integrated on the same chip as the processor, or may be separately disposed on different chips.

It will be appreciated that the associated data interaction process, for example, sending the indication information, may be a process of outputting the indication information from the processor, and receiving the capability information may be a process of receiving the input capability information from the processor. In particular, the data output by the processor may be output to a transmitter and the input data received by the processor may be from a receiver. The transmitter and receiver may be collectively referred to as a transceiver, among others.

The processing device in the twelfth aspect may be a chip, the processor may be implemented by hardware or software, and when implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like; when implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory, which may be integrated with the processor, located external to the processor, or stand-alone.

In a thirteenth aspect, there is provided a computer program product comprising: a computer program (which may also be referred to as code, or instructions), which when executed, causes a computer to perform the method of any one of the possible implementations of the first to sixth aspects and of the first to sixth aspects described above.

In a fourteenth aspect, a computer-readable medium is provided, which stores a computer program (which may also be referred to as code or instructions) that, when executed on a computer, causes the computer to perform the method of any one of the possible implementations of the first to sixth aspects and the first to sixth aspects described above.

In a fifteenth aspect, a communication system is provided, which includes the aforementioned network device and terminal device.

Drawings

FIG. 1 is a schematic illustration of a communication system suitable for use with embodiments of the present application;

fig. 2 is a schematic flow chart of a method for transmitting and receiving CSI provided by an embodiment of the present application;

fig. 3 is a schematic flow chart diagram of a method for transmitting and receiving reference signals according to another embodiment of the present application;

fig. 4 is a schematic flow chart diagram of a method for transmitting and receiving CSI provided by another embodiment of the present application;

fig. 5 is a schematic block diagram of a communication device provided by an embodiment of the present application;

fig. 6 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;

fig. 7 is a schematic structural diagram of a network device according to an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long term evolution (Long term evolution, LTE) System, a LTE Frequency Division Duplex (FDD) System, a LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, a future fifth Generation (5th Generation, 5G) communication System, or a new Radio Access Technology (NR).

For the understanding of the embodiments of the present application, a communication system suitable for the embodiments of the present application will be described in detail with reference to fig. 1. Fig. 1 shows a schematic diagram of a communication system suitable for use in the method and apparatus for transmitting and receiving of the embodiments of the present application. As shown in fig. 1, the communication system 100 may include at least one network device, such as the network device 110 shown in fig. 1; the communication system 100 may also include at least one terminal device, such as the terminal device 120 shown in fig. 1. Network device 110 and terminal device 120 may communicate via a wireless link. Each communication device, such as network device 110 or terminal device 120, may be configured with multiple antennas, which may include at least one transmit antenna for transmitting signals and at least one receive antenna for receiving signals. Additionally, each communication device can additionally include a transmitter chain and a receiver chain, each of which can comprise a plurality of components associated with signal transmission and reception (e.g., processors, modulators, multiplexers, demodulators, demultiplexers, antennas, etc.), as will be appreciated by one skilled in the art. Thus, network device 110 and terminal device 120 may communicate via multiple antenna techniques.

It should be understood that the network device in the wireless communication system may be any device having a wireless transceiving function. Such devices include, but are not limited to: evolved Node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (e.g., Home evolved Node B, or Home Node B, HNB), BaseBand Unit (BBU), Access Point (AP) in wireless fidelity (WIFI) system, wireless relay Node, wireless backhaul Node, Transmission Point (TP), or transmission and reception Point (BBU), etc., and may also be 5G, e.g., NR, gbb in the system, or transmission Point (TRP or TP), one or a group of Base stations in the 5G system may include multiple antennas, or antenna panels, and may also be a network panel, such as a Base band Node (NB), or a Distributed Unit (DU), etc.

In some deployments, the gNB may include a Centralized Unit (CU) and a DU. The gNB may also include a Radio Unit (RU). A CU implements part of the function of a gNB, and a DU implements part of the function of the gNB, for example, the CU implements the function of a Radio Resource Control (RRC) layer and a Packet Data Convergence Protocol (PDCP) layer, and the DU implements the function of a Radio Link Control (RLC) layer, a Media Access Control (MAC) layer and a Physical (PHY) layer. Since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer, the higher layer signaling, such as the RRC layer signaling, may also be considered to be transmitted by the DU or the DU + CU under this architecture. It is to be understood that the network device may be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU may be divided into network devices in a Radio Access Network (RAN), or may be divided into network devices in a Core Network (CN), which is not limited in this application.

It should also be understood that terminal equipment in the wireless communication system may also be referred to as User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in telemedicine (remote), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like. The embodiments of the present application do not limit the application scenarios.

In some communication systems, such as 5G systems, to combat path loss in high frequency scenarios, gains may be obtained between two communication devices having communication connections through beamforming, respectively. The transmitting end, such as network device 110, and the receiving end, such as terminal device 120, may obtain the pairing relationship between the transmitting beam and the receiving beam through beam (beam) training.

Beams are understood to be spatial filters or spatial parameters. The beam used for transmitting the signal may be referred to as a transmission beam (Tx beam), and may be a spatial transmit filter (spatial domain transmit filter) or a spatial transmit parameter (spatial domain transmit parameter); the beam for receiving the signal may be referred to as a reception beam (Rx beam), and may be a spatial domain reception filter (spatial domain reception filter) or a spatial domain reception parameter (spatial domain reception parameter).

The technique of forming the beam may be a beamforming technique or other technique. For example, the beamforming technology may specifically be a digital beamforming technology, an analog beamforming technology, or a hybrid digital/analog beamforming technology. The transmission beam may refer to the distribution of signal strength formed in different spatial directions after the signal is transmitted through the antenna, and the reception beam may refer to the distribution of signal strength of the wireless signal received from the antenna in different spatial directions.

In the NR protocol, the beam may be, for example, a spatial filter (spatial filter). It should be understood that this application does not exclude the possibility of defining other terms in future protocols to mean the same or similar meanings.

It should be noted that, in the embodiments shown below, "beam" and "spatial filter" are used alternately, for example, "transmit beam" and "spatial transmit filter" are used alternately, and "receive beam" and "spatial receive filter" are used alternately, and the intended meaning is consistent when the difference is not emphasized.

The beam pairing relationship is a pairing relationship between the transmit beam and the receive beam, that is, a pairing relationship between the spatial transmit filter and the spatial receive filter. A large beamforming gain can be obtained for transmitting signals between the transmitting beam and the receiving beam having the beam pairing relationship.

In one implementation, the transmitting end may transmit the reference signal in a beam scanning manner, and the receiving end may also receive the reference signal in a beam scanning manner. Specifically, the transmitting end may form beams with different directivities in space by means of beam forming, and may poll on a plurality of beams with different directivities to transmit the reference signal through the beams with different directivities, so that the power of the reference signal transmitting the reference signal in the direction in which the transmitting beam is directed may be maximized. The receiving end can also form beams with different directivities in space in a beam forming mode, and can poll on a plurality of beams with different directivities to receive the reference signal through the beams with different directivities, so that the power of the reference signal received by the receiving end can be maximized in the direction pointed by the received beam.

By traversing each transmitting beam and each receiving beam, the receiving end can perform channel measurement based on the received reference signal, and report the measured result to the transmitting end through the CSI. For example, the receiving end may report a part of reference signal resource with larger Reference Signal Receiving Power (RSRP) to the transmitting end, for example, report an identifier of the reference signal resource, so that the transmitting end receives and transmits signals by using a beam pairing relationship with better channel quality when transmitting data or signaling.

Before describing the embodiments of the present application, a brief description of several terms referred to in the present application will be provided.

1. Reference signal and reference signal resource: the reference signal may be used for channel measurement, channel estimation, beam quality monitoring, or the like. The reference signal resource may be used to configure transmission attributes of the reference signal, such as time-frequency resource location, port mapping relationship, power factor, scrambling code, and the like, and refer to the prior art specifically. The transmitting end device may transmit the reference signal based on the reference signal resource, and the receiving end device may receive the reference signal based on the reference signal resource.

The channel measurement referred to in this application also includes beam measurement, i.e. beam quality information obtained by measuring reference signals, and the parameters for measuring beam quality include, but are not limited to, RSRP. For example, the beam quality can also be measured by parameters such as Reference Signal Reception Quality (RSRQ), signal-to-noise ratio (SNR), signal-to-interference plus noise ratio (SINR), and the like. In the embodiments of the present application, for convenience of description, the channel measurement involved may be regarded as beam measurement without specific description.

Beam quality monitoring as referred to herein is monitoring beam-based link quality information and the parameters used to assess the quality of the wireless link include, but are not limited to, an assumed block error rate (hypothetic block error rate). For example, the link quality can also be measured by RSRP, RSRQ, SNR, SINR, etc.

Specifically, the reference signal referred to in the embodiments of the present application may include, for example, a channel state information reference signal (CSI-RS), a Synchronization Signal Block (SSB), and a Sounding Reference Signal (SRS). Correspondingly, the reference signal resource may include a CSI-RS resource (CSI-RS resource), an SSB resource, and an SRS resource (SRS resource).

The SSB may also be referred to as a synchronization signal/physical broadcast channel block (SS/PBCH block), and the corresponding SSB resource may also be referred to as a synchronization signal/physical broadcast channel block resource (SS/PBCH block resource), which may be referred to as SSB resource for short. In some cases, SSB may also refer to SSB resources. In the embodiments of the present application, for convenience of differentiation and description, the SSB may be regarded as an SS/PBCH block and the SSB resource may be regarded as an SS/PBCH block resource without specific description.

In order to distinguish between different reference signal resources, each reference signal resource may correspond to an identification of one reference signal resource, for example, a CSI-RS resource identification (CRI), an SSB resource identification (SSBRI), an SRS Resource Index (SRI).

The SSB resource identifier may also be referred to as an SSB identifier (SSB index).

It should be understood that the above listed reference signals and corresponding reference signal resources are only exemplary and should not constitute any limitation to the present application, which does not exclude the possibility of defining other reference signals in future protocols to achieve the same or similar functions.

In one possible design, the network device may send CSI resource configurations (CSI resource settings) to the terminal device through an RRC message, where each CSI resource setting may include S (S ≧ 1, and S is an integer) CSI-RS resource sets (CSI-RS resource sets), and each CSI-RS resource set may include K (K ≧ 1, and K is an integer) NZP CSI-RS resources (NZP CSI-RS resources). The terminal device may receive the CSI-RS on the K nzp CSI-RS resources indicated by the network device.

In another possible design, when the terminal device accesses the cell, the resource configuration information of the SSB may be known. The network device may also indicate the identity of one or more SSB resources, such as a Set of channel state information synchronization signal block resources (CSI-SSB-Resource Set), via a special Set of CSI-RS resources. SSBs transmitted based on the one or more SSB resources may be used for channel measurement. The terminal device may receive the SSBs according to the SSB resources indicated by the special CSI-RS resource set and perform channel measurement.

It should be understood that the above-listed specific method for indicating the reference signal resource to the terminal device by the network device is only an example, and should not constitute any limitation to the present application, and the present application does not exclude the possibility of using other signaling or manners to indicate the reference signal resource in future protocols. For example, the network device may further indicate J (K ≧ J ≧ 1, and J is an integer) NZP CSI-RS resources which are currently available from among the K NZP CSI-RSresources through the DCI.

2. Time domain behavior (time domain behavior) parameter: in the reference signal resource configuration and the CSI reporting configuration (CSI report setting), different time domain behaviors may be indicated by different time domain behavior parameters. The time domain behavior parameter of the reference signal resource configuration can be used for indicating the time domain behavior of the terminal equipment for receiving the reference signal; the time domain behavior parameters configured for reporting the CSI can be used to indicate the time domain behavior of reporting the CSI by the terminal device.

By way of example and not limitation, time domain behavior may include, for example, periodic (periodic), semi-persistent (semi-persistent), and aperiodic (aperiodic).

3. Antenna port (antenna port): referred to as a port for short. A transmit antenna identified by the receiving end device, or a spatially distinguishable transmit antenna. One antenna port may be configured for each virtual antenna, each virtual antenna may be a weighted combination of multiple physical antennas, and each antenna port may correspond to one reference signal port.

4. Quasi-co-location (QCL): the signals corresponding to the antenna ports having the QCL relationship have the same parameters, or the parameters of one antenna port may be used to determine the parameters of another antenna port having the QCL relationship with the antenna port, or two antenna ports have the same parameters, or the parameter difference between the two antenna ports is smaller than a certain threshold. Wherein the parameters may include one or more of: delay spread (delay spread), Doppler spread (Doppler spread), Doppler shift (Doppler shift), average delay (average delay), average gain, spatial Rx parameters. Wherein the spatial reception parameters may include one or more of: angle of arrival (AOA), average AOA, AOA extension, angle of departure (AOD), average angle of departure (AOD), AOD extension, receive antenna spatial correlation parameter, transmit beam, receive beam, and resource identification.

The angle may be a decomposition value of different dimensions, or a combination of decomposition values of different dimensions. The antenna ports are antenna ports with different antenna port numbers, and/or antenna ports with the same antenna port number for transmitting or receiving information in different time and/or frequency and/or code domain resources, and/or antenna ports with different antenna port numbers for transmitting or receiving information in different time and/or frequency and/or code domain resources. The resource identification may include: CSI-RS resource identifier, or SRS resource identifier, or SSB resource identifier, or resource identifier of a preamble sequence transmitted on a Physical Random Access Channel (PRACH), or resource identifier of a demodulation reference signal (DMRS), for indicating a beam on a resource.

In the NR protocol, the above QCL relationship can be classified into the following four types based on different parameters:

type a (type a): doppler frequency shift, Doppler spread, average time delay and time delay spread;

type b (type b): doppler shift, doppler spread;

type c (type c): doppler shift, average delay; and

type d (type d): the space receives the parameters.

The QCL referred to in the embodiments of the present application is a QCL of type D. Hereinafter, without being particularly illustrated, the QCL may be understood as a QCL of type D, i.e., a QCL defined based on spatial reception parameters.

When the QCL relationship refers to a QCL relationship of type D: the QCL relationship between the port of the downlink signal and the port of the downlink signal, or between the port of the uplink signal and the port of the uplink signal, may be that the two signals have the same AOA or AOD for indicating that the two signals have the same receive beam or transmit beam. For another example, for QCL relationship between downlink signals and uplink signals or between ports of uplink signals and downlink signals, AOAs and AODs of two signals may have a corresponding relationship, or AODs and AOAs of two signals may have a corresponding relationship, that is, an uplink transmit beam may be determined according to a downlink receive beam or a downlink receive beam may be determined according to an uplink transmit beam by using beam reciprocity.

The signals transmitted on the ports having QCL relationships may also have corresponding beams comprising at least one of: the same reception beam, the same transmission beam, a transmission beam corresponding to the reception beam (corresponding to a reciprocal scene), and a reception beam corresponding to the transmission beam (corresponding to a reciprocal scene).

A signal transmitted on a port having a QCL relationship may also be understood as a signal received or transmitted using the same spatial filter. The spatial filter may be at least one of: precoding, weight of antenna port, phase deflection of antenna port, and amplitude gain of antenna port.

Signals transmitted on ports having a QCL relationship may also be understood as having a corresponding Beam Pair Link (BPL) comprising at least one of: the same downlink BPL, the same uplink BPL, the uplink BPL corresponding to the downlink BPL, and the downlink BPL corresponding to the uplink BPL.

Accordingly, the spatial reception parameter (i.e., QCL of type D) may be understood as a parameter for indicating direction information of a reception beam.

5. Transmission Configuration Indicator (TCI): may be used to indicate the QCL relationship between the two reference signals. The network device may configure a TCI state (TCI state) list for the terminal device through higher layer signaling (e.g., Radio Resource Control (RRC) message), and may configure a TCI state (TCI state) list for the terminal device through higher layer signaling (e.g., MAC CE) or physical layer signaling (e.g., DCI activation or indication of one or more TCI states therein, in particular, the network device may configure a TCI state list for the terminal device through RRC message, the terminal device may activate one or more TCI states in the control channel TCI state list according to an indication of the MAC CE when receiving a Physical Downlink Control Channel (PDCCH) from the network device, wherein the control channel TCI state list is a subset of the TCI state list, and the terminal device may obtain the DCI from the PDCCH and further select one or more TCI states in the data channel TCI state list according to the indication of the DCI, wherein the data channel TCI state list is a subset of the TCI state list, and the indication is sent to the terminal equipment through MAC-CE signaling.

Configuration information for a TCI state may include the identity of one or both reference signal resources, and the associated QCL type. When the QCL relationship is configured to one of type a, or B, or C, the terminal device may demodulate the PDCCH or PDSCH according to the indication of the TCI status.

When the QCL relationship is configured to type D, the terminal device may know which transmission beam the network device uses to transmit signals, and may further determine which reception beam the network device uses to receive signals according to the beam pairing relationship determined by the channel measurement.

6. Beam failure monitoring mechanism: in NR, the network device may configure a periodic reference signal resource set q for the terminal device through a high-level parameter Beam Failure monitoring reference signal resource configuration (Beam-Failure-Detection-RS-resource configuration)₀The set of reference signal resources q₀Including a set of reference signal resources. The terminal device may base on the set of reference signal resources q₀Reference signals are received and beam-based wireless link quality is evaluated based on the received reference signals. It will be appreciated that the radio link quality is based on the quality of the radio link established by the transmit beam and/or the receive beam. When the link quality monitoring result meets a preset condition, Beam Failure Recovery (BFR) may be triggered. Such beam-based radio link quality monitoring may be referred to simply as beam failure monitoring.

In addition, the network device can configure a reference signal resource set q for the terminal device through a high-level parameter Candidate Beam reference signal List (Candidate-Beam-RS-List)₁The set of reference signal resources q₁May also include a set of reference signal resources. The set of reference signal resources q is triggered when beam failure recovery is triggered₁The reference signal resource of (1) may be used as a candidate reference signal resource for beam recovery.

The following describes an embodiment of the present application by taking the communication system shown in fig. 1 as an example. In the downlink channel measurement, the transmitting end may be a network device, such as the network device 110 shown in fig. 1; the receiving end may be a terminal device, such as terminal device 120 shown in fig. 1.

In this embodiment, the terminal device 120 may perform channel measurement based on the reference signal received by each spatial receiving filter, and report the measurement result to the network device 110 in a packet manner. The terminal device 120 may group the results of measurements based on the same spatial receive filter into a set of measurement reports. The spatial receiving filters corresponding to the measurement reports are different from each other. Therefore, the measurement report in the embodiment of the present application has a one-to-one correspondence with the spatial receiving filter. Network device 110 may perceive a correspondence of spatial receive filters to reference signal resources, i.e., perceive a pairing of one or more receive beams and one or more transmit beams, based on one or more sets of measurement reports reported by terminal device 120.

Thus, the network device 110 may perform beam management based on more receive beam to transmit beam pairings. For example, the network device 110 may group the reference signal resource identifiers reported by the terminal device 120 according to the measurement report, and store the grouped reference signal resource identifiers locally. When receiving the reference signal from the network device 110, the terminal device 120 may also locally store a correspondence between a reference signal resource identifier corresponding to the received reference signal and a reception beam used for receiving the reference signal. The network device 110 may configure and notify the identifier of the reference signal resource to the terminal device 120 in the form of a TCI status list, so as to select a transmission beam corresponding to the identifier of a certain reference signal resource stored in the TCI status list to transmit a signal in the subsequent communication process, and may activate through the MAC CE or indicate a TCI status corresponding to the selected transmission beam through DCI, so as to help the terminal device 120 determine and select to receive a signal using an appropriate reception beam.

When the terminal device 120 tilts or turns over to cause the TCI status list corresponding to a certain receiving beam to be invalid, because the network device 110 has already obtained more pairing relationships between the transmitting beam and the receiving beam in advance, the network device 110 may obtain information of the receiving beam with better receiving quality of the terminal device 120, and then the network device 110 may directly switch to the transmitting beam with better quality corresponding to the receiving beam. Meanwhile, the terminal device 120 may also switch to the receiving beam to receive the signal, so as to avoid frequently triggering the beam failure recovery procedure. Therefore, the robustness of the beam pairing relationship can be improved, the robustness of the communication system can be improved, the transmission efficiency can be improved, and the user experience can be improved.

For another example, the network device 110 groups the reference signal resource identifiers #1 to #4 reported by the terminal device 120 according to the measurement report, and stores the grouping in the local, and it is assumed that the measurement report is divided into a group #1 and a group #2, which respectively correspond to the receiving beam #1 and the receiving beam #2 of the terminal device 120, where the reference signal resource identifiers #1 and #2 correspond to the group #1, and the reference signal resource identifiers #3 and #4 correspond to the group # 2. On the premise that the network device 110 uses the transmission beam corresponding to the reference signal resource identifier #4 to serve another terminal device, the network device 110 may preferentially schedule the transmission beam corresponding to the reference signal resource identifier #1 or #2 to serve the current terminal device 120.

The reference signal resource identifier #1 or #2 and the reference signal resource identifier #4 belong to different measurement reports and correspond to different receiving beams of the current terminal device, so if the network device 110 selects the transmitting beam corresponding to the reference signal resource identifier #1 or #2 to communicate with the terminal device 120, the interference of the transmitting beam serving another terminal device (e.g., the transmitting beam corresponding to the reference signal resource identifier # 4) can be avoided to the greatest extent.

However, if the terminal device 110 cannot report the measurement report based on the spatial receiving filter, only the reference signal resource identifier and the corresponding reference signal received power are reported, and the network device 110 cannot sense whether the reference signal transmitted on the reference signal resource reported by the terminal device 120 is received and measured based on the same receiving beam, or the network device 110 cannot sense whether the reference signal corresponding to the reference signal resource reported by the terminal device 120 is received by one receiving beam of the terminal device 120 or by multiple receiving beams. The network device 110 may not be able to obtain more information about the pairing relationship of the transmit beam and the receive beam, thereby performing beam management properly.

For example, in a possible case, the terminal device 120 may perform channel measurement based on the reference signal received by only one receiving beam (e.g., denoted as receiving beam #1), and report the measurement result to the network device 110. Thereafter, the network device 110 may transmit data or signaling with the terminal device 120 according to the identifier of the reference signal resource reported by the terminal device 120 and the reference signal received power. However, if the terminal device 120 experiences a small roll or rotation, it may cause the quality of the received signal of the receiving beam #1 to be degraded, and the identities of the previously reported reference signal resources are reported based on the measurement of the receiving beam # 1. This means that the TCI status list configured by the network device 110 is actually based on the receive beam #1 of the same terminal device 120, and this TCI status list can be considered to have all failed. If the network device 110 selects the corresponding transmission beam to transmit signals and the terminal device 120 selects the reception beam #1 to receive signals according to the TCI still based on the TCI status list, the link quality may be seriously degraded and may cause the system to frequently enter a Beam Failure Recovery (BFR) procedure. Therefore, the selection of the receiving beam is excessively dependent on the implementation of the terminal device 120, which may cause the beam pairing relationship to be not robust, which is not favorable for improving the transmission efficiency, and the user experience is not good.

In another possible scenario, the terminal device 120 may also perform channel measurement based on reference signals received by multiple receiving beams (for example, referred to as receiving beam #1 and receiving beam #2), and report the measurement result to the network device 110. Thereafter, the network device 110 may transmit data or signaling with the terminal device 120 according to the identifier of the reference signal resource reported by the terminal device 120 and the reference signal received power. However, the network device 110 does not know that the measurement results reported by the terminal device are based on multiple receive beam measurements. If the terminal device 120 experiences a small roll or rotation, which may cause the quality of the received signal of the currently used receiving beam (e.g., the receiving beam #1) to be degraded, the network device 110 does not know which transmitting beam should be switched to transmit the signal, and may still need to recover through beam failure, resulting in the failure of all the previously saved TCI lists. Therefore, even if the terminal device 120 includes a plurality of receiving beams, the measurement results and additional information reported by beam scanning before can not be substantially fully utilized, and the robustness of the transmission system cannot be improved, so that the user experience is not good.

In yet another possible scenario, the network device 110 may transmit two different signals, e.g., PDCCH and PDSCH, to the same terminal device 120 on the same OFDM symbol, and since the terminal device 120 may not have the capability to receive two signals using two different receive beams simultaneously, the network device 110 may need to ensure that the two signals appearing on the same OFDM symbol have the same spatial reception parameters, i.e., the terminal device 120 may receive two signals using the same receive beam. However, if the terminal device 120 only reports the identifier of the reference signal resource to the network device 110, the network device 110 does not know whether the transmission beam corresponding to the multiple reference signal resources reported by the terminal device 120 corresponds to one receiving beam of the terminal device. At this time, the network device 110 can only select the same transmission beam to transmit the PDCCH and the PDSCH, so that the terminal device 120 can receive using the same reception beam. However, it should be understood that in a high frequency communication system, the PDCCH may be suitable for coverage using a beam lifting angle domain with a larger Half Power Band Width (HPBW) to enhance robustness as a control signal, and the PDSCH may be suitable for enhancement of throughput using a beam with a smaller HPBW to lift SNR or SINR at the time of reception. Therefore, if the PDCCH and the PDSCH are transmitted simultaneously by using the transmission beam of the data channel, the PDCCH detection robustness may be reduced, and if the PDCCH and the PDSCH are transmitted simultaneously by using the transmission beam of the control channel, the error code of the PDSCH may be increased, and the throughput may be reduced.

In summary, it can be seen that if the network device 110 cannot know the pairing relationship between the transmitting beam and the receiving beam, it may not be able to perform beam management reasonably, which is not favorable for the robustness of the system and for improving the system performance.

In the embodiment of the present application, since the terminal device 120 reports the measurement reports based on the spatial receiving filter, each set of measurement reports is measured based on the reference signal received by the same spatial receiving filter. The network device 110 may sense more pairing information of the transmitting beam and the receiving beam, so that beam management may be performed more reasonably, which may improve the beamforming gain to a greater extent; meanwhile, the robustness of the system is improved, the transmission efficiency is improved, and the user experience is improved. Overall, it is advantageous to improve system performance.

The method and apparatus for transmitting and receiving CSI provided in the present application will be described in detail with reference to the accompanying drawings.

It should be understood that the channel measurement or the beam measurement in the embodiment of the present application may be based on a same bandwidth part (BWP) or a same carrier (CC), or may be based on different BWPs or CCs, and similarly, the CSI report in the embodiment of the present application may correspond to the same BSP or CC, or correspond to different BWPs or CCs, which is not limited in this application.

It should also be understood that in the embodiments shown below, the first and second are only for the convenience of distinguishing different objects, and should not constitute any limitation to the present application. For example, different indication information, different reporting modes, etc. are distinguished

It should also be understood that, in the embodiments shown below, the unit of "time" referred to may be, for example, a slot (slot) or an orthogonal frequency division multiplexing (orthogonal frequency division multiplexing) symbol, and may also be a second, millisecond, microsecond, or the like. This is not limited in this application.

It should also be understood that in the embodiments illustrated below, "pre-acquisition" may include signaling by the network device or pre-definition, e.g., protocol definition. The "predefined" may be implemented by saving a corresponding code, table, or other means that can be used to indicate the relevant information in advance in the device (for example, including the terminal device and the network device), and the present application is not limited to a specific implementation manner thereof.

It should also be understood that references to "storing" in embodiments of the present application may refer to storing in one or more memories. The one or more memories may be provided separately or integrated in the encoder or decoder, the processor, or the communication device. The one or more memories may also be provided separately, with a portion of the one or more memories being integrated into the decoder, the processor, or the communication device. The type of memory may be any form of storage medium and is not intended to be limiting of the present application.

It should also be understood that the "protocol" in the embodiment of the present application may refer to a standard protocol in the communication field, and may include, for example, an LTE protocol, an NR protocol, and a related protocol applied in a future communication system, which is not limited in the present application.

It should also be understood that "and/or," which describes an association relationship for an associated object, indicates that there may be three relationships, e.g., a and/or B, may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one" means one or more than one; "at least one of a and B", similar to "a and/or B", describes an association relationship of associated objects, meaning that three relationships may exist, for example, at least one of a and B may mean: a exists alone, A and B exist simultaneously, and B exists alone.

The technical solution of the present application may be applied to a wireless communication system, for example, the communication system 100 shown in fig. 1. Two communication devices in a wireless communication system may have a wireless communication connection relationship therebetween, and one of the two communication devices may correspond to the terminal equipment 120 shown in fig. 1, for example, may be the terminal equipment shown in fig. 1, or may be a chip configured in the terminal equipment; the other of the two communication apparatuses may correspond to the network device 110 shown in fig. 1, and for example, may be the network device shown in fig. 1, or may be a chip configured in the network device.

Hereinafter, without loss of generality, the embodiments of the present application will be described in detail by taking an interaction process between a terminal device and a network device as an example. It can be understood that any terminal device in the wireless communication system or a chip configured in the terminal device may receive the reference signal and report the CSI based on the same method, and any network device in the wireless communication system or a chip configured in the network device may send the reference signal and receive the CSI based on the same method. This is not limited in this application.

Fig. 2 is a schematic flow chart diagram of a method 200 of transmitting and receiving CSI shown from the perspective of device interaction. As shown, the method 200 shown in fig. 2 may include steps 210 through 290. The method 200 is described in detail below with reference to fig. 2.

In step 210, the terminal device generates one or more CSI, where each CSI includes one or more sets of measurement reports, each set of measurement reports is measured based on the reference signal received by one spatial receiving filter, and the spatial receiving filters corresponding to the sets of measurement reports are different from each other when the total number of measurement reports is multiple.

In step 220, the terminal device transmits the one or more CSIs.

Accordingly, in step 220, the network device receives the one or more CSIs.

In step 230, the network device determines that the spatial receiving filters corresponding to the sets of measurement reports are different from each other according to the one or more CSI.

That is, the terminal device may perform measurement according to the reference signal received by each spatial receiving filter, and report the result obtained by measurement based on each spatial receiving filter to the network device in the form of a measurement report. Each set of measurement reports may correspond to a spatial receive filter, or each set of measurement reports may correspond to a receive beam. When the total number of reported measurement reports is multiple, the multiple sets of measurement reports correspond to multiple spatial receiving filters one to one, or the multiple sets of measurement reports correspond to multiple receiving beams one to one. When the network device receives the one or more CSIs, it may be determined that the spatial receive filters corresponding to each set of measurement reports are different from each other. Based on the one-to-one correspondence relationship between the measurement reports and the spatial receiving filters, the network device may also sense the correspondence relationship between the reference signal resources corresponding to (for example, may include or agree in advance) each group of measurement reports and the spatial receiving filters, and thus, the network device may sense which transmit beams correspond to the same receiving beam.

For the convenience of understanding the present embodiment, before describing the above steps 210 to 230 in detail, a specific process of the terminal device receiving the reference signal is first briefly described.

Optionally, before step 210, the method 200 further comprises step 240: the network device transmits a reference signal, which is used for channel measurement.

Accordingly, in step 240, the terminal device receives a reference signal, which is used for channel measurement.

As mentioned above, in the downlink channel measurement, the reference signal may be a CSI-RS or an SSB, which is not limited in this application.

As mentioned above, the network device may transmit the resource configuration information of the reference signal, such as the CSI resource configuration and the resource configuration information of the SSB listed above, to the terminal device through higher layer signaling in advance. The terminal device may determine the reference signal resource according to the resource configuration information of the reference signal sent by the network device. Accordingly, the terminal device may receive the reference signal based on the reference signal resource.

In the embodiment of the present application, the channel measurement may be understood as a beam measurement. The network device may transmit the reference signal in a beam scanning manner, and the terminal device may also receive the reference signal in a beam scanning manner.

Specifically, the reference signals sent by the network device through different transmit beams may be associated with different reference signal resources, and the reference signals received by the terminal device through different receive beams may also be associated with different reference signal resources. Thus, by reference to the identification of the signal resource, different transmit beams or receive beams can be distinguished.

For example, assume that the network device includes 6 transmit beams, such as may be referred to as beams #1 through #6, respectively. The terminal device includes 1 receive beam. If the network device configures 6 reference signal resources for the terminal device, the resource identifiers may be #1 to #6, respectively. For the sake of distinguishing from the above beams, the 6 reference signal resources can be referred to as resources #1 to #6, respectively. The network device may transmit reference signals to the terminal device based on resources #1 to #6, and then the 6 reference signal resources are in one-to-one correspondence with 6 transmission beams, and the network device may transmit one or more reference signals based on each reference signal resource and the corresponding transmission beam. For example, a network device may transmit one or more reference signals through beam #1 based on resource # 1; the network device may transmit one or more reference signals through beam #2 based on resource # 2; by analogy, this is not further enumerated here.

If the network device configures 24 reference signal resources for the terminal device, the resource identifiers may be, for example, resources #1 to #24, respectively. For the sake of distinguishing from the above beams, the 24 reference signal resources can be referred to as resources #1 to #24, respectively. The network device may send the reference signal to the terminal device through the resources #1 to #24, and then each 6 reference signal resources in the 24 reference signal resources correspond to the 6 transmission beams one to one, and the network device may send the reference signal based on the 24 reference signal resources by cyclically using the 6 transmission beams. For example, a network device may transmit one or more reference signals through beam #1 based on resource #1, one or more reference signals through beam #2 based on resource #2, and so on, until the network device transmits one or more reference signals through beam #6 based on resource # 6; thereafter, the network device may transmit one or more reference signals through beam #1 based on resource #7, one or more reference signals through beam #2 based on resource #8, and so on, until the network device transmits one or more reference signals through beam #6 based on resource # 12; thereafter, the network device may transmit one or more reference signals through beam #1 based on resource #13, one or more reference signals through beam #2 based on resource #14, and so on, until the network device transmits one or more reference signals through beam #6 based on resource # 18; thereafter, the network device may transmit one or more reference signals over beam #1 based on resource # 19; one or more reference signals are transmitted through beam #2 based on resource #20, and so on until the network device transmits one or more reference signals through beam #6 based on resource # 24.

Since the terminal device only includes one receiving beam, the terminal device can receive the reference signals transmitted by different transmitting beams of the network device through the receiving beam based on different reference signal resources in turn.

For another example, assume that the network device includes 6 transmit beams, e.g., which may be referred to as transmit beams #1 through #6, respectively, and the terminal device includes 2 receive beams, e.g., which may be referred to as receive beams #1 and #2, respectively. If the network device configures 6 reference signal resources for the terminal device, the resource identifiers may be #1 to #6, respectively. For the sake of convenience of distinguishing from the above beams, the 6 reference signal resources may be referred to as resources #1 to #6, respectively. The network device may transmit reference signals to the terminal device based on resources #1 to #6, and then the 6 reference signal resources are in one-to-one correspondence with 6 transmission beams, and the network device may transmit one or more reference signals based on each reference signal resource and the corresponding transmission beam. Since the terminal device includes 2 reception beams, the terminal device may first receive the reference signal based on the 6 reference signal resources using one of the reception beams and then receive the reference signal based on the 6 reference signal resources using the other reception beam. Therefore, the network device may repeat transmitting the reference signals based on the 6 reference signal resources through the 6 transmit beams twice, so that 2 receive beams of the terminal device can receive the reference signals based on the 6 reference signal resources for measurement. For example, the network device may transmit one or more reference signals through the transmit beam #1 based on resource #1, and the terminal device may receive the one or more reference signals through the receive beam #1 based on resource # 1; the network device may transmit one or more reference signals through the transmit beam #2 based on resource #2, and the terminal device may receive the one or more reference signals through the receive beam #1 based on resource # 2; and so on until the network device transmits one or more reference signals over transmit beam #6 based on resource #6, which the terminal device receives over receive beam #1 based on resource # 6. Thereafter, the network device may transmit the reference signals through the transmission beams #1 to #6 again in sequence based on the resources #1 to #6, and the terminal device may receive the reference signals through the reception beam #2 in sequence based on the resources #1 to # 6.

In summary, it can be seen that the terminal device may fix a certain receiving beam, poll the transmitting beam of the network device, and transmit the reference signal using different transmitting beams, and the terminal device receives the reference signal transmitted by different transmitting beams of the network device using the fixed receiving beam, so as to perform channel measurement. Thereafter, the terminal device may switch to another receive beam and repeat the above steps. The network device may fix a certain transmission beam, the terminal device receives the reference signal from the same transmission beam of the network device using different reception beams, and the terminal device may perform channel measurement according to the reference signal received by different reception beams. Thereafter, the network device may switch to another transmit beam and repeat the above steps.

It should be understood that the foregoing illustrates two possible implementations for beam scanning for ease of understanding only, but this should not constitute any limitation on the present application, which does not limit the specific implementations of beam scanning. It should also be understood that the correspondence between the identities of the plurality of beams and the identities of the plurality of reference signal resources is shown above for ease of understanding only, but this should not constitute any limitation on the present application, which does not limit the correspondence between the beams and the reference signal resources.

It should be noted that the number of the receiving beams included in the terminal device may be greater than or equal to the total number of groups of the measurement reports reported through the CSI. For example, a terminal device may include 4 receive beams, but may only report 2 sets of measurement reports. The relationship between the receiving beam of the terminal device and the number of sets of reported measurement reports will be described in detail later, and detailed description thereof will be omitted here.

Specifically, in steps 210 and 220, the terminal device may generate and report the measurement report to the network device in any one of the following manners:

In other words, the terminal device may report a set of measurement reports to the network device, or report multiple sets of measurement reports to the network device. If the terminal device reports multiple sets of measurement reports to the network device, the multiple sets of measurement reports may be carried in one CSI or may be carried in multiple CSIs. When the protocol reports the measurement report by default in one of the above manners, the terminal device may generate and send CSI based on the corresponding manner.

In the case where a plurality of sets of measurement reports are reported by a terminal device, spatial reception filters (or reception beams) corresponding to the respective sets of measurement reports are different from each other. That is, in the multiple sets of measurement reports reported by the terminal device, the spatial receiving filters corresponding to any two sets of measurement reports are different.

In one embodiment, the multiple CSIs are configured based on the same CSI report.

In another embodiment, the CSI reporting configurations are based on CSI reporting configurations. At this time, the multiple CSI reporting configurations have the same time domain behavior parameters. For example, the CSI reporting configurations may all be periodic reporting, semi-persistent reporting, or aperiodic reporting.

Further, the terminal device may generate and transmit one or more CSIs based on at least one of the following parameters:

parameter 1: the group number M of the measurement reports reported by each CSI is a positive integer;

parameter 2: the total number Q of measurement reports reported by the multiple CSI is a positive integer; and

parameter 3: and reporting the number N of the CSI when the measurement report is reported through a plurality of CSI, wherein N is a positive integer.

The parameters on which the terminal device transmits the CSI are explained in detail below in conjunction with the above-listed four methods of transmitting the CSI.

When the terminal device generates and transmits CSI in the first or second mode, the terminal device may generate and transmit CSI only based on the parameter 1. At this time, each CSI report is independent by default, then, each CSI report includes at least one set of measurement reports, the measurement reports of different sets correspond to different spatial receiving filters of the terminal device, and the parameter M is the number of measurement reports allowed to be reported in the CSI of the terminal device.

When the terminal device generates and transmits CSI in the third mode, the terminal device may generate and transmit CSI based on the parameter 2 or the parameter 3. At this time, each CSI by default of the protocol can only include one set of measurement reports, and then, the parameter Q and the parameter N are equivalent and both correspond to different spatial receiving filters of the terminal device, and the terminal device can determine the number of measurement reports that are allowed to be reported through multiple CSI only based on any one of the parameter 2 or the parameter 3.

When the terminal device generates and transmits CSI in the fourth mode, the terminal device may generate and transmit CSI based on any two of parameters 1 to 3. In other words, since the parameters 1 to 3 satisfy the following relationship: and Q is M × N, the third term can be calculated from any two of M, Q and N. At this time, the parameter Q corresponds to different spatial receiving filters of the terminal device, the terminal device may determine, according to the parameter Q, the number of measurement reports allowed to be reported by multiple CSI, determine, through the parameter M, the number of measurement reports allowed to be reported by each CSI, and determine, through the parameter N, the total number of CSI required.

It should be noted that, when the number of CSI is 1, the number M of sets of measurement reports included in each CSI and the total number Q of measurement reports reported by multiple CSI may be equal. Similarly, when the number of measurement reports included in each CSI is 1, the total number Q of measurement reports reported by a plurality of CSIs and the number N of CSIs may also be equal.

Specifically, the "reporting of measurement reports through multiple CSI" related to the second parameter and the third parameter means that when the terminal device performs channel measurement based on different spatial receiving filters, multiple CSI transmissions are required under the condition that one CSI transmission cannot include all measurement reports to be reported. Therefore, the number of "multiple CSI" related to the second parameter and the third parameter may refer to the number of CSI transmissions.

The number of sets of all measurement reports to be reported may correspond to the number of non-repetitive spatial receiving filters used by the terminal device in the beam training. For example, suppose that the terminal device uses 4 spatial receiving filters in the beam training, so that a total of 4 sets of measurement reports can be obtained through channel measurement, that is, all measurement reports to be reported total 4 sets, and if only 2 sets of measurement reports can be reported in one CSI transmission, at this time, the 4 sets of measurement reports can be sent to the network device through 2 CSI transmissions. In this case, Q is 4, M is 2, and N is 2.

It should be noted that the number of spatial receiving filters used by the terminal device in the beam training is not necessarily the number of spatial receiving filters in the terminal device, for example, the terminal device may include 8 spatial receiving filters, but only 4 spatial receiving filters may be used in the beam training. It is to be understood that the number of spatial receive filters used by the terminal device in beam training may be less than or equal to the number of spatial receive filters in the terminal device.

Hereinafter, for brevity, in the case where no specific description is made, "multiple CSI" referred to in the parameter two and the parameter three may refer to the above definition, and will not be described in detail hereinafter.

In the embodiment of the present application, the above parameters M, Q and N may be predefined, such as protocol definitions; or the network equipment determines and indicates the terminal equipment; it is also possible to combine the two above. This is not limited in this application.

It should be understood that the relationship between parameters M, Q and N is described in detail above in connection with four different reporting modes, and for the sake of brevity, the description of the relationship between M, Q and N is not repeated hereinafter in relation to parameters M, Q or N.

For example, if the terminal device sends CSI in the above-mentioned first or second manner, the parameter M may be predefined, or may be indicated to the terminal device by the network device through a signaling; if the terminal device sends CSI in the above manner, the parameter Q or N may be predefined, or may be indicated to the terminal device by the network device through a signaling; if the terminal device sends CSI in the fourth manner, any two of the parameters M, Q and N may be predefined, or both of them may be indicated to the terminal device by the network device through signaling, or one of them may be predefined, and the other parameter is indicated by the network device through signaling, for example, the parameter N is predefined, and the network device indicates M or Q through signaling.

If the above parameters M, Q and N are indicated to the terminal device by the network device, before step 210, optionally, the method 200 further includes: in step 250, the network device sends second indication information indicating one or more of M, Q and N.

Accordingly, in step 250, the terminal device receives the second indication information, where the second indication information is used to indicate one or more of M, Q and N.

Further, when the parameter is determined by the network device, the network device may determine according to the capability information reported by the terminal device. Optionally, before step 250, the method 200 further comprises: step 260, the terminal device sends capability information, which includes one or more of the following parameters:

parameter i: the number of spatial receive filters, or receive beams;

parameter ii: the maximum group number of measurement reports reported by each CSI;

parameter iii: the maximum value of the total group number of the measurement reports reported by the multiple CSI; and

parameter iv: and reporting the maximum number of the CSI when the measurement report is reported through a plurality of CSI.

Accordingly, in step 260, the network device receives the capability information.

Wherein the parameters ii, iii and iv can be determined by the parameter i, i.e. the number of spatial receive filters determines the total number Q of reported measurement reports. For example, the number of spatial receiving filters is P (P > 0 and is an integer), that is, the total number of measurement reports that can be reported by the terminal device may be an integer less than or equal to P. That is, the total number Q of the measurement reports reported by the multiple CSI may satisfy: q is less than or equal to P.

In a possible implementation manner, when the terminal device reports the parameter i (i.e., P) to the network device through the capability information, the parameter iii is equal to P by default, and at this time, the terminal device does not need to report the parameter iii through the capability information; and vice versa. In other words, the terminal device may report any one of the parameter i and the parameter iii to the network device through the capability information.

Correspondingly, the number M of sets of measurement reports reported by each CSI for the parameter 1 may be less than or equal to the maximum number of sets of measurement reports reported by each CSI for the parameter ii; the total group number Q of the measurement reports reported by the parameter 2 through the multiple CSI may be less than or equal to the maximum value of the total group number of the measurement reports reported by the parameter iii through the multiple CSI; the number N of the CSI reported by the parameter iv may be less than or equal to the maximum number of the CSI reported by the parameter 3.

Specifically, when the terminal device sends CSI in the first or second manner, the capability information sent by the terminal device to the network device may include the parameter i or the parameter ii; when the terminal device sends CSI in the third manner, the capability information sent by the terminal device to the network device may include the parameter i, the parameter iii, or the parameter iv; when the terminal device transmits CSI in the fourth manner, the capability information transmitted to the network device by the terminal device may include any two of the parameter ii, the parameter iii, and the parameter iv, or the capability information may also include any two of the parameter i, the parameter ii, and the parameter iv.

The number of spatial reception filters may be the number of spatial reception filters arranged on the same antenna panel, the total number of spatial reception filters arranged on a plurality of antenna panels, or the number of spatial reception filters including antenna panel information, for example, P_panel1Can be used to indicate the number of spatial receiving filters, P, arranged in the panel (panel)1_panel2May be used to indicate the number of spatial receive filters deployed at the panel 2. In this case, the parameter i may be in the form of (P)_panel1，P_panel2) Or P is not just a number but a sequence of values, which may contain a number of values equal to the number of antenna panels.

It should be understood that the capability of the terminal device may be used as a factor for the network device to determine the parameter M, N or Q, and the network device may also determine the parameter based on other factors, which is not limited in this application.

In this embodiment of the present application, the terminal device may perform measurement based on the reference signal received by each spatial receiving filter, and report a result obtained by the measurement to the network device in a packet manner. The terminal device may obtain one or more measurements based on the reference signals received by the same spatial receive filter. In this embodiment, one or more measurement results measured based on reference signals received by the same spatial reception filter may be grouped into a set of measurement reports.

Wherein each measurement may include one or more of:

an identification of a reference signal resource; and

reference signal received power information.

That is, each measurement result may report only the identifier of the reference signal resource, or may report only the received power information of the reference signal, or may report the identifier of the reference signal resource and the corresponding received power information of the reference signal. In other words, each set of measurement reports may include an identification of one or more reference signal resources, or one or more reference signal received power information, or an identification of one or more reference signal resources and reference signal received power information corresponding to the identification of each reference signal resource.

In a possible design, the network device and the terminal device may agree in advance on a condition of the reference signal resource to be reported, for example, when RSRP is greater than a preset threshold, report an identifier of the reference signal resource corresponding to the reference signal to the network device. In this design, the terminal device may only report the identifier of the reference signal resource, and the network device may determine the corresponding transmission beam directly according to the received identifier of the reference signal resource.

In another possible design, the network device and the terminal device may agree in advance to perform measurement with respect to a certain reference signal resource, and the terminal device may report reference signal received power information of receiving a reference signal on the reference signal resource to the network device. In this design, the terminal device may report only the reference signal received power information.

In yet another possible design, the terminal device may report, to the network device, the identifier of one or more reference signal resources with higher reference signal received power and the corresponding reference signal received power information according to the received power of the reference signal. The network device may determine a corresponding transmission beam according to the identifier of the reference signal resource reported by the terminal device and the corresponding reference signal received power information, and select a transmission beam with a higher RSRP (for example, RSRP greater than a certain preset threshold) to transmit a signal.

It should be understood that, for convenience of understanding, the above lists examples of different contents contained in each measurement result in the measurement report reported by the terminal device to the network device in different situations, but this should not limit the present application in any way. This application does not exclude the possibility of defining more or less content for measurement reports in future protocols.

When a set of measurement reports includes multiple reference signal received power information, the multiple reference signal received power information may be: a plurality of RSRPs, or a maximum value of the plurality of RSRPs and an indication of a differential value with respect to the maximum value. Or, the multiple pieces of reference signal received power information may be directly reported by an absolute value of RSRP; the RSRPs other than the maximum RSRP in the multiple RSRPs in each measurement report may also be reported in a differential manner, and in short, the RSRPs may be reported in an intra-group differential manner.

When multiple sets of measurement reports are included in the CSI and each set of measurement report includes one or more pieces of reference signal received power information, multiple pieces of reference signal received power information may be included in the CSI. The reference signal received power information may be: a plurality of RSRPs, or a maximum value of the plurality of RSRPs and an indication of a differential value with respect to the maximum value. Or, the multiple reference signal received powers may be directly reported by an absolute value of RSRP; the RSRPs other than the maximum RSRP in the multiple RSRPs in the multiple sets of measurement reports may also be reported in a differential manner, which is simply reported in an inter-set differential manner.

When reporting the reference signal received power information in an intra-group differential mode, the terminal device may first determine a maximum value of RSRP from multiple RSRPs obtained by measuring reference signals received on the basis of the same received beam, and then report a differential value between other RSRP to be reported and the maximum value of the RSRP to the network device.

When reporting the reference signal received power information in an inter-group difference manner, the terminal device may first determine a maximum value of RSRP from multiple RSRPs obtained by measuring reference signals received on the basis of multiple received beams, and then report a difference value between other RSRP to be reported and the maximum value of the RSRP to the network device.

Since each group of measurement reports corresponds to different receiving beams, the difference of RSRP values between groups may be large, and if the differential indication method in the prior art is directly followed, the RSRP value to be indicated may exceed the range that can be indicated by the differential step and the indication bits of the differential value defined in the prior protocol. For example, in the prior art, the difference step is 2dB, and the indication bit of the difference value is 4 bits, which means that the valid indication range of the difference value is 32dB at most. However, if reporting is based on the above-described inter-group difference method, the difference between the absolute values of the maximum RSRP of the two measurement reports may exceed 32 dB.

At this point, the protocol may define a larger differential step size or a larger number of bits of the indicator bit. For example, the differential step size may be set to 4dB, and the 4dB differential step size may be further defined to be used by default when packet reporting based on the spatial receive filter is turned on. For another example, the indication bit of the differential value may be defined as 5 bits, and the 5 bits may be further defined to be used by default when packet reporting based on the spatial reception filter is turned on.

It should be understood that the difference step sizes listed above and the number of bits used to indicate the difference value are only examples and should not constitute any limitation to the present application. For example, the protocol may define a larger or smaller difference step size, and may also define a greater or lesser number of bits to indicate the difference value.

Optionally, each set of measurement reports further includes a set identifier, and each set identifier corresponds to one spatial reception filter.

An indication field of the group identity may be included in each group of measurement reports. The indication field of the group identity may be carried by m bits, for example. When the terminal device transmits CSI in the above-described manner one or manner two,

m is the number of sets of measurement reports reported by each CSI as described above; when the terminal device transmits CSI in the third or fourth manner,

q is the total number of sets of measurement reports reported by the CSI, and it can be understood that, since Q is M × N, when the network device does not indicate the parameter Q, Q can still be determined according to the parameter Q

And m is determined.

In one implementation, the group identifier may also be local (local), that is, the correspondence between the group identifier and the spatial receiving filter in the measurement report of any two CSI reports may be different, or the correspondence between the group identifier and the spatial receiving filter in the measurement report of each CSI report is independent. In this implementation, the number of group ids may be determined according to the number M of groups reported by each CSI.

If the group identifier is local, the network device may determine the correspondence between the transmit beam and the receive beam based on the group identifier carried in the same CSI report.

For example, assuming that the terminal device includes 4 spatial receiving filters, which may be respectively referred to as spatial receiving filters #0 to #3, but only the reference signals received by the spatial receiving filters #1 and #2 are measured and reported in CSI reporting, the group identifier may be #1 and # 2; in the next CSI report, the terminal device may perform measurement and report based on only the reference signals received by the spatial receiving filters #0 and #3, and the group identifier may still be #1 and #2, and certainly may also be #3 and # 4. At this time, the network device cannot determine whether the spatial receiving filter corresponding to the measurement report with the group identifier #1 in the last CSI report and the spatial receiving filter corresponding to the measurement report with the group identifier #1 in the next CSI report are the same spatial receiving filter, or cannot determine whether the spatial receiving filters corresponding to the measurement reports with the group identifiers #2 in the two CSI reports are the same spatial receiving filter. It can be seen that when the group identifier is a local group identifier, only different group identifiers in the same CSI report can be used to distinguish different spatial reception filters.

In another implementation, the group identifier may be global (global), that is, the correspondence between the group identifiers and the spatial receiving filters may be constant within a predetermined period, or in other words, the correspondence between the group identifiers and the spatial receiving filters in the measurement report of multiple CSI reports within a predetermined period may remain constant.

In this implementation, the number of group identities may be determined by the total number Q of measurement reports reported over CSI. When the terminal device reports the CSI in the first or second mode, the total number Q is equal to the number M of measurement reports included in each CSI.

If the group identifier is global, the network device may determine the correspondence between the transmit beam and the receive beam based on the group identifier carried in multiple CSI reports.

For example, if the terminal device includes 4 spatial receiving filters, four different group identifiers may be respectively corresponding to the terminal device, for example, spatial receiving filter #0 may correspond to group identifier #0, spatial receiving filter #1 may correspond to group identifier #1, spatial receiving filter #2 may correspond to group identifier #2, and spatial receiving filter #3 may correspond to group identifier # 3.

In the last CSI report, the terminal device may have measured and reported based on only the reference signals received by the spatial receiving filters #1 and #2, and the group identifiers may be #1 and #2, respectively. In the next CSI report, the terminal device may have measured and reported based on only the reference signals received by the spatial reception filters #2 and #4, and the group identifiers may be #2 and #4, respectively. At this time, even though CSI is reported twice, the network device may still determine that the measurement report with group id #1 and the measurement report with group id #4 correspond to different spatial receiving filters; similarly, the measurement report with the group identifier #2 in two CSI reports corresponds to the same spatial receiving filter.

The correspondence between the plurality of group identifications and the plurality of spatial reception filters may be maintained for a predetermined period of time. The predetermined period may be understood as an effective time window of the correspondence between the plurality of group identifications and the plurality of spatial reception filters.

Alternatively, the predetermined period of time may be any one of:

a) the time interval of two CSI reports satisfies the following conditions: based on the same CSI reporting configuration or based on two CSI reporting configurations with the same time domain behavior parameter;

b) a time interval of two reference signal transmissions, the two reference signal transmissions satisfying: configuring transmission based on the same reference signal resource, or configuring transmission based on the same reference signal resource set, or configuring transmission based on the same reference signal resource, or configuring transmission based on reference signal resources with the same time domain behavior parameters;

c) a time interval from enabling to reconfiguring of CSI reporting configuration;

d) one CSI resource configures a time interval from enabling to reconfiguring;

e) a CSI reporting configuration time interval from enabling to releasing;

f) a time interval from enabling to releasing of one CSI resource configuration;

g) a specified length after a CSI reporting configuration is enabled;

h) a specified length after one CSI resource configuration is enabled.

The above-listed a) to h) will be described in detail below.

a) Time interval of two CSI reports:

the time interval between two CSI reports may be understood as an interval between the ith CSI reporting time and the (i + j) th CSI reporting time, where i and j are positive integers. That is, the starting time of the predetermined period of time may be the time of the ith CSI report, and the ending time may be the time of the (i + j) th CSI report.

In the j CSI reports from the ith CSI report to the (i + j) th CSI report, the time domain behaviors of CSI reporting configurations based on any two CSI reports are the same. In other words, the j CSI reports may all be periodic, semi-persistent, or aperiodic.

In the embodiment of the present application, the j CSI reports may all be based on the same CSI reporting configuration, that is, any two CSI reports are based on the same CSI reporting configuration; the j CSI reports may also be partially configured based on the same CSI report, that is, at least two CSI reports in the j CSI reports may be configured based on the same CSI report; the j CSI reports may also be based on different CSI reporting configurations, i.e. the CSI reporting configurations based on each CSI report are different from each other. The time domain behaviors of the j times of CSI reporting are the same whether based on the same CSI reporting configuration or not.

b) Time interval of two reference signal transmissions:

the time interval between two reference signal transmissions is understood to be the interval between the time of the p-th reference signal transmission and the time of the p + q-th reference signal transmission, where p and q are positive integers.

That is, the start time of the predetermined period may be the time of the reference signal transmission p-th time, and the end time may be the time of the reference signal transmission p + q-th time.

In the q times of reference signal transmission from the p-th time reference signal transmission to the p + q times of reference signal transmission, the time domain behaviors of the reference signal resources used by any two times of reference signal transmission are the same. In other words, the q reference signal transmissions may all be periodic, semi-persistent, or aperiodic.

As mentioned above, the reference signal may be a CSI-RS or an SSB, the CSI-RS may be configured by a CSI-RS resource set in a CSI resource setting, and the SSB may also indicate an SSB index used for channel measurement by a special CSI-SSB-resource set. Therefore, in the embodiment of the present application, the q reference signal transmissions may all be based on the same resource configuration, such as CSI resource setting; the q reference signal transmissions may also all be configured based on the same reference signal resource set, such as CSI-RS resource set or CSI-SSB-resource set; the q reference signal transmissions may also all be based on the same reference signal resource configuration, such as CSI-RS resource or SSB resource; the q reference signal transmissions may also be based on different resource configurations or reference signal resource set configurations, i.e. the resource configurations on which each reference signal transmission is based are different from each other, and the reference resource set configurations on which each reference signal transmission is based are different from each other. The reference signal resources used for the q reference signal transmissions have the same time domain behavior, whether based on the same resource configuration or the same reference signal resource set configuration.

c) A time interval from enabling to reconfiguring for CSI reporting configuration:

that is, the starting time of the predetermined period of time may be the time when the CSI reporting configuration for packet reporting is enabled, and the ending time may be the time when the same CSI reporting configuration is reconfigured. For ease of understanding, the CSI reporting configuration is first enabled as described in detail below.

In one implementation, the CSI reporting configuration being enabled may refer to the CSI reporting configuration enabling packet reporting being configured, and the time the CSI reporting configuration enabling packet reporting being enabled may refer to the time the CSI reporting configuration enabling packet reporting being configured. In this implementation, the CSI reporting configuration is enabled to not differentiate time domain behavior.

In another implementation, the CSI reporting configuration is enabled to be related to time domain behavior. The time domain behavior of the CSI reporting configuration may include: periodic, semi-persistent, and aperiodic. For a periodic CSI reporting configuration, the time for which the CSI reporting configuration is enabled may be the time for which the CSI reporting configuration is configured, for a semi-persistent CSI reporting configuration, the time for which the CSI reporting configuration is enabled may be the time for which the CSI reporting configuration is activated, and for an aperiodic CSI reporting configuration, the time for which the CSI reporting configuration is enabled may be the time for which the CSI reporting configuration is triggered.

Specifically, the CSI reporting configuration may be configured through a higher layer parameter in an RRC message, for example. For example, the network device may indicate the configured CSI reporting configuration through a CSI reporting configuration added state list (CSI-ReportConfigToAddModList) in the RRC message. And when a certain CSI reporting configuration appears in the CSI-reportConfigToAddModList, indicating that the CSI reporting configuration is configured.

For periodic CSI reporting, when the terminal device receives a CSI reporting configuration sent by an RRC message, the terminal device may periodically report CSI according to the CSI reporting configuration. Therefore, for periodic CSI reporting, the time of the CSI reporting configuration enabling packet reporting may be the time when the CSI reporting configuration is configured, that is, the time when the terminal device receives the CSI reporting configuration.

For semi-persistent CSI reporting, the network device may first send CSI reporting configuration through an RRC message, and then, the network device may activate the terminal device through the MAC CE or the DCI to perform CSI reporting.

For example, when CSI is configured to be reported on a Physical Uplink Control Channel (PUCCH), the network device may activate and deactivate CSI reporting through the MAC CE. The terminal equipment can periodically report the CSI according to the CSI reporting configuration after receiving an activation (activate) instruction of the MAC CE; the terminal device may also stop reporting the CSI after receiving a deactivation (deactivate) instruction of the MAC CE.

When the CSI is configured on a Physical Uplink Shared Channel (PUSCH) for reporting, the network device may activate and deactivate CSI reporting through the DCI. The terminal equipment can periodically report the CSI according to the reporting configuration of the CS after receiving the activating instruction of the DCI; the terminal device may also stop reporting the CSI after receiving the DCI deactivation instruction. Therefore, for semi-persistent CSI reporting, the time of CSI reporting configuration for enabling packet reporting may be the time when the CSI reporting configuration is activated, that is, the time when the terminal device receives an activation instruction of MAC CE or DCI.

For aperiodic CSI reporting, the network device may also send CSI reporting configuration through an RRC message, and then the network device may trigger (trigger) the terminal device to perform CSI reporting through DCI. After receiving the trigger of the DCI, the terminal device may perform a CSI report according to the CSI report configuration. Therefore, for aperiodic CSI reporting, the time of CSI reporting configuration enabling packet reporting may be the time when the CSI reporting configuration is triggered, that is, the time when the terminal device receives the trigger of DCI.

In the following, for brevity, reference may be made to the above description for an understanding that the CSI reporting configuration is enabled without making a specific explanation.

If the predetermined time interval is a time interval from enabling to reconfiguring of one CSI reporting configuration, when the CSI reporting configuration reported by the enabling packet is enabled, the corresponding relationship between the plurality of group identifiers and the plurality of spatial receiving filters is valid and remains unchanged until the CSI reporting configuration is reconfigured.

It should be understood that the time interval from enabling to reconfiguring of one CSI reporting configuration as the predetermined time period is only an example, and should not constitute any limitation to the present application. The predetermined time period may also be a time interval from one CSI reporting configuration being enabled to another CSI reporting configuration being configured or reconfigured. In case that the predetermined period is defined as a time interval during which a CSI reporting configuration enabling packet reporting is configured, activated or triggered to another CSI reporting configuration being configured or reconfigured, the time domain behavior of the two CSI reporting configurations may be the same, e.g. both may be periodic, semi-persistent or aperiodic.

d) One CSI resource configuration time interval from enable to reconfiguration:

that is, the starting time of the predetermined period of time may be the time when the CSI resource configuration is enabled, and the ending time may be the time when the same CSI resource configuration is reconfigured.

For ease of understanding, a detailed description of the CSI resource configuration is enabled first.

In one implementation, the CSI resource configuration being enabled may refer to the CSI resource configuration being configured, and then the time at which the CSI resource configuration is enabled may be the time at which the CSI resource configuration is configured. In this implementation, the CSI resource configuration does not distinguish between time domain behaviors.

In another implementation, the CSI resource configuration is enabled may be related to time domain behavior. The time domain behavior due to CSI resource configuration may include periodic, semi-persistent, and aperiodic. For a periodic CSI resource configuration, the time at which the CSI resource configuration is enabled may be the time at which the CSI resource configuration is configured, for a semi-persistent CSI resource configuration, the time at which the CSI resource configuration is enabled may be the time at which a set of CSI resources associated with the CSI resource configuration is activated, for an aperiodic CSI resource configuration, the time at which the CSI resource configuration is enabled may be the time at which a set of CSI resources associated with the CSI resource configuration is triggered.

Specifically, the CSI resource configuration may be configured by higher layer parameters in, for example, an RRC message. For example, the network device may indicate the configured CSI resource configuration (CSI resource setting) through a CSI resource configuration addition state list (CSI-ResourceConfigToAddModList) in the RRC message, may indicate the configured CSI-RS resource set (CSI-RS resource set) through a NZP CSI-RS resource set addition state list (NZP-CSI-RS-resosettoaddmodlist) in the RRC message, may indicate the configured CSI-RS resource (CSI-RS resource set) through a NZP CSI-RS resource addition state list (NZP-CSI-RS-resourctoaddmodlist) in the RRC message, and may indicate the configured SSB resource set (SSB resource set) through a CSI-SSB set addition state list (CSI-SSB-resouttoaddmodlist) in the RRC message.

When a certain CSI-RS resource configuration appears in the CSI-ResourceConfigToAddModList, it may indicate that the CSI-RS resource configuration is configured; when a certain set of CSI-RS resources appears in nzp-CSI-RS-ResourceSetToAddModList, it may indicate that the set of CSI-RS resources is configured; when a CSI-RS resource appears in nzp-CSI-RS-resource toaddmodlist, it may indicate that the CSI-RS resource is configured; when a certain set of SSB resources appears in the CSI-SSB-ResourceSetToAddModList, it may indicate that the set of SSB resources is configured. For periodic reference signal transmission, when the terminal device receives the CSI resource configuration sent by the RRC message, the terminal device may periodically receive a reference signal based on the CSI resource configuration to perform channel measurement. Therefore, for the periodic CSI resource configuration, the time of enabling the CSI resource configuration reported by the packet may be the time when the CSI resource configuration is configured, that is, the time when the terminal device receives the CSI resource configuration.

For semi-persistent reference signal transmission, the network device may first send the CSI resource configuration through an RRC message, and then the network device may activate the terminal device to receive the reference signal through the MAC CE. After receiving the activation instruction of the MAC CE, the terminal equipment can periodically receive a reference signal based on a CSI resource set which is activated by CSI resource configuration; the network device can also deactivate the terminal device to receive the reference signal through the MAC CE, and the terminal device stops receiving the reference signal after receiving the deactivation instruction of the MAC CE. Therefore, for semi-persistent reference signal transmission, the time for enabling CSI resource configuration may be the time when one CSI resource set associated with the CSI resource configuration is activated, that is, the time when the terminal device receives the activation instruction of the MACCE.

For aperiodic reference signal transmission, the network device may also send CSI resource configuration through an RRC message first, and then the network device may trigger (trigger) the terminal device through DCI to receive a reference signal, and after receiving the trigger of DCI, the terminal device may receive the reference signal based on the CSI resource set triggered by the CSI resource configuration. Therefore, for aperiodic reference signal transmission, the time at which the CSI resource configuration is enabled may be the time at which one CSI resource set associated with the CSI resource configuration is triggered, that is, the time at which the terminal device receives the trigger of the DCI.

The CSI resource set may be, for example, a CSI-RS resource set or an SSB resource set.

In the following, for the sake of brevity, reference may be made to the above for an understanding that the CSI resource configuration is enabled without making a specific explanation.

If the predetermined time interval is a time interval from enabling to reconfiguring of one CSI resource, when the CSI resource configuration is enabled, the corresponding relation between the plurality of group identifications and the plurality of spatial receiving filters is effective and is kept unchanged until the CSI resource configuration is reconfigured.

It should be understood that the time interval from enabling to reconfiguring of one CSI resource configuration as the predetermined time period is only an example, and should not constitute any limitation to the present application. The predetermined time period may also be a time interval from one CSI reporting configuration being enabled to another CSI reporting configuration being configured or reconfigured. In case that the predetermined period is defined as a time interval during which a CSI reporting configuration enabling packet reporting is configured, activated or triggered to another CSI reporting configuration being configured or reconfigured, the time domain behavior of the two CSI reporting configurations may be the same, e.g. both may be periodic, semi-persistent or aperiodic.

e) One CSI reporting configuration time interval from enable to release:

that is, the starting time of the predetermined period of time may be a time when the CSI reporting configuration is enabled, and the ending time may be a time when the same CSI reporting configuration is released.

The details of the CSI reporting configuration enabling understanding have been described above, and are not repeated herein for brevity.

The CSI reporting release may be configured by higher layer parameters in, for example, RRC messages. For example, the network device may indicate the released CSI reporting configuration through a CSI reporting configuration release list (CSI-reportconfigtorereleaselist) in the RRC message. And when a certain CSI reporting configuration appears in the CSI-reportConfigToReleaseList, the CSI reporting configuration is released.

f) Time interval from enable to release of one CSI resource configuration:

that is, the starting time of the predetermined period of time may be a time when the CSI resource configuration is enabled, and the ending time may be a time when the same CSI resource configuration is released.

The understanding that the CSI resource configuration is enabled has been described in detail above, and is not repeated here for brevity.

The CSI resource release may be configured by higher layer parameters, for example, in RRC messages. For example, the network device may indicate the released CSI resources through a CSI resource configuration release list (CSI-resourceconfigtorereleaselist) in the RRC message, may also indicate the released CSI-RS resources through a NZP CSI-RS resources set release list (NZP-CSI-RS-resourcesetettorereleaselist) in the RRC message, may also indicate the released CSI-RS resources through a NZP CSI-RS resources release list (NZP-CSI-RS-resourcerereleaselist) in the RRC message, and may also indicate the released SSB resources through a CSI-SSB resources set release list (CSI-SSB-resourcesetreselilist) in the RRC message.

When a certain CSI-RS resource configuration appears in the CSI-ResourceConfigToReleaseList, the CSI-RS resource configuration can be released; when a certain set of CSI-RS resources appears in nzp-CSI-RS-resourcesetttoreleaselist, it may indicate that the set of CSI-RS resources is released; when a CSI-RS resource appears in nzp-CSI-RS-ResourceToReleaseList, it may indicate that the CSI-RS resource is released; when a certain set of SSB resources appears in the CSI-SSB-ResourceSetToReleaseList, it may indicate that the SSB resources are released.

g) A specified length after CSI reporting configuration is enabled:

that is, the starting time of the predetermined period may be the time for enabling CSI reporting configuration, and the time length of the predetermined period may be indicated by the network device or may also be defined by a protocol.

The specified length may be, for example, clocked by an absolute time duration, such as one or more time slots, one or more symbols, or one or more seconds, one or more milliseconds, one or more microseconds, or the like; the specified length may also be the number of CSI reports, e.g., one or more CSI reports. This is not limited in this application. The details of the CSI reporting configuration enabling understanding have been described above, and are not repeated herein for brevity.

h) A specified length after one CSI resource configuration is enabled;

that is, the starting time of the predetermined period may be the time for enabling the CSI resource configuration, and the time length of the predetermined period may be indicated by the network device or may also be defined by the protocol.

The specified length may be, for example, clocked by an absolute time duration, such as one or more time slots, one or more symbols, or one or more seconds, one or more milliseconds, one or more microseconds, or the like; the specified length may also be a number of reference signal transmissions, e.g., one or more reference signal transmissions. This is not limited in this application. The understanding that the CSI resource configuration is enabled has been described in detail above, and is not repeated here for brevity. It should be understood that the several possible definitions of the specified duration listed above are merely examples and should not constitute any limitation to the present application.

In the embodiment of the present application, the predetermined period may be any one of a) to h) listed above, and specifically, which one of a) to h) listed above may be defined by a protocol, or may be indicated to the terminal device by the network device in advance. Which one of the above a) to h) the predetermined period is, for example, may be indicated by a bitmap.

The terminal device may further determine the specific parameter after determining which of the above items a) to h) the predetermined period is.

Alternatively, the specific parameter of the predetermined period of time may be predefined, such as protocol definition. The protocol defines the specific parameters of any one of a) to h) above.

Specifically, when the predetermined time period is a), the starting time of the predetermined time period may be the time for the ith CSI report, the ending time may be the time for the (i + j) th CSI report, and the protocol may define the values of i and j; when the predetermined time period is b), the starting time of the predetermined time period may be the time of the p-th reference signal transmission, and the ending time may be the time of the p + q-th reference signal transmission, and the protocol may define the values of p and q; when the predetermined period is any one of c) to f), the specific parameter may not be further defined; when the predetermined period is g) or h), the protocol may define a specified length, for example, the specified length may be defined by an absolute time duration, such as x (x > 0) slots or symbols, y (y > 0) seconds, milliseconds, microseconds, or the like, or may also be defined by a number of CSI reports or reference signal transmissions, such as z (z > 0 and is an integer) CSI reports or z reference signal transmissions.

It should be understood that the specific method and content of defining the predetermined time period by the protocol are listed above only for ease of understanding, but this should not constitute any limitation to the present application, and the method of defining the predetermined time period is not limited to the above list.

Optionally, the specific parameter of the predetermined period of time may also be determined by the network device and indicated to the terminal device. Optionally, the method 200 further comprises: the network device receives fourth indication information, wherein the fourth indication information is used for indicating the starting time and the length of the preset time period.

Accordingly, the terminal device receives the fourth indication information.

Specifically, when the predetermined time period is a), the starting time of the predetermined time period may be the time for reporting the i-th CSI, and the ending time may be the time for reporting the i + j-th CSI, so that the network device may indicate i and j to the terminal device through the fourth indication information; when the predetermined period is b), the starting time of the predetermined period may be the time of the p-th reference signal transmission, and the ending time may be the time of the p + q-th reference signal transmission, then the network device may indicate p and q to the terminal device through the fourth indication information; when the predetermined period is any one of c) to f), the network device may not indicate a specific parameter; when the predetermined time period is g) or h), the network device may indicate the specified duration of the predetermined time period to the terminal device through the fourth indication information, for example, the protocol may predefine a definition manner and a timing unit of the specified duration, for example, defined by an absolute duration, the protocol may predefine a unit of the specified duration, and the network device may indicate a specific numerical value through the fourth indication information, such as x or y; for another example, the CSI reporting times or the reference signal transmission times are used for defining, the protocol may be predefined, specifically, the CSI reporting times or the reference signal transmission times are used for defining, and the network device may indicate a specific value through the fourth indication information, such as z.

It should be understood that the foregoing lists specific methods and contents of the network device indicating the predetermined time period for ease of understanding only, but this should not limit the present application in any way. The end time can be deduced from the start time and the length, so that the network device can indicate any two items of the start time, the length and the end time of the preset time period to the terminal device, and the terminal device can deduce the other item according to the any two items indicated by the network device. Therefore, when the network device indicates any two of the start time, the length and the end time of the predetermined time period to the terminal device through the fourth indication information, the network device shall fall within the protection scope of the present application.

It should also be understood that the method of defining the predetermined time period is not limited to that listed above. The predetermined period of time may also be determined by way of a combination of protocol definition and network device indication, for example. For another example, when the network device sends the fourth indication information to the terminal device to indicate the predetermined period, the starting time of the predetermined period may also be the time when the terminal device receives the fourth indication information. At this time, the fourth indication information may further indicate the duration of the predetermined period. Methods for the terminal device to determine the predetermined time period include, but are not limited to, those listed above, and are not illustrated herein for brevity.

In summary, the group identifier is carried in the measurement report, so that the network device can conveniently obtain the corresponding relationship between the transmission beam and the reception beam. It should be understood, however, that this is not the only way to determine the correspondence of transmit beams to receive beams. For example, when the terminal device reports multiple sets of measurement reports through multiple CSI, the terminal device may further indicate, through an indication field of one bit, whether the spatial receiving filters corresponding to the current CSI report and the last CSI report are the same each time the CSI is reported. If "0" indicates different, "1" indicates the same.

In this embodiment, for convenience of differentiation and illustration, the measurement results obtained based on the reference signals received by one spatial receiving filter may be categorized into a group of measurement reports, so that one or more groups of measurement reports corresponding to one or more spatial filters may be obtained, and the terminal device may report the measurement results to the network device in groups through CSI, where such a manner of reporting CSI in groups based on the spatial receiving filters is referred to as packet reporting based on the spatial receiving filters, or referred to as packet reporting based on receiving beams (UE Rx beams). Briefly, the measurement reports in the embodiment of the present application are grouped based on spatial receiving filters, and CSI reported by different measurement reports may be considered as different groups.

Correspondingly, in the prior art, a mode of reporting CSI measured based on a plurality of simultaneously received reference signals to a network device may be referred to as Simultaneous reception (simultaneousreception based) packet reporting. It can be understood that both of the above-mentioned reporting manners may be referred to as packet-based beam reporting (packet-based beam reporting), which is referred to as packet reporting for short. Correspondingly, the CSI reporting method may further include non-packet reporting.

Optionally, before step 210, the method 200 further comprises: step 270, the network device sends first indication information, where the first indication information is used to indicate a first reporting mode, and the first reporting mode is packet reporting based on a spatial receiving filter.

Accordingly, in step 270, the terminal device receives the first indication information.

In one possible design, the first indication information may be carried in a CSI reporting configuration (CSI report setting) of an RRC message. At this time, the first indication information may be used to indicate one of a plurality of reporting modes, where the plurality of reporting modes at least include packet reporting based on a spatial receiving filter. Specifically, when the first indication information is carried in the CSI reporting configuration, for example, an indication field of the first indication information may be carried in an Information Element (IE) of the CSI reporting configuration (CSI-reporting configuration), which is used to notify the terminal device of a reporting mode used by the current CSI reporting configuration.

It should be appreciated that future protocols may support more than one reporting mode, for example, there may be second and third reporting modes or even more reporting modes in addition to the first reporting mode (i.e., the packet reporting mode based on the spatial receive filter) described above. The second reporting mode may be, for example, packet reporting based on simultaneous reception, and the third reporting mode may be, for example, non-packet reporting. This is not limited in this application.

In another possible design, the first indication information may be carried in a packet reporting parameter of the CSI reporting configuration. In this case, the first reporting mode may be understood as a first packet reporting mode, and the first indication information may be used to indicate one of a plurality of packet reporting modes, where the plurality of packet reporting modes at least include packet reporting based on a spatial receiving filter. When the first indication information is carried in a packet reporting parameter configured for CSI reporting, for example, the first indication information may be configured in a beam packet reporting (groupbasedbeedreporting) parameter domain in a CSI reporting configuration information element, or configured in an enable (enable) state in the beam packet reporting parameter domain in the CSI reporting configuration information element.

It should be understood that future protocols may support more than one packet reporting mode, for example, there may be a second and a fourth reporting mode or even more than the first reporting mode (packet reporting mode based on spatial reception filter) in addition to the first reporting mode. The second reporting mode may be, for example, packet reporting based on simultaneous reception, and the fourth reporting mode may be, for example, packet reporting based on interference measurement. This is not limited in this application.

It should be understood that the several possible reporting methods listed above are only examples, and should not be construed as limiting the present application, and the present application does not exclude the possibility of defining more or less reporting methods in future protocols.

Meanwhile, the specific way of indicating the reporting way is not limited in the present application, and an information element or a field carrying the first indication information may enumerate a certain reporting way in an enumeration form, for example, the first indication information may indicate a reporting way based on a spatial receiving filter; for example, the first indication information may indicate an index or an identifier corresponding to a reporting mode based on a spatial reception filter.

In yet another possible design, the first indication information may also be carried in different signaling based on different time domain behaviors of CSI reporting configurations. Optionally, the first indication information may be carried in one or more of an RRC message, a MAC CE, and DCI.

For example, the time domain behavior of the CSI reporting configuration may be periodic reporting, and the first indication information may be carried in an RRC message. For example, the network device may send the CSI report configuration and the CSI resource configuration through an RRC message, and the first indication information may be carried in the CSI report configuration or the CSI resource configuration.

For another example, the time domain behavior of the CSI reporting configuration may be semi-persistent reporting, and the first indication information may be carried in the MAC CE. For example, the network device may send the CSI report configuration and the CSI resource configuration in advance through an RRC message. The network device may activate the CSI reporting configuration through the MAC CE or the DCI, or may activate the CSI resource configuration through the MAC CE. The first indication information may be carried in an activation instruction of the MAC CE or DCI. When receiving the activation instruction of the MAC CE or the DCI, the terminal device may report CSI according to the reporting mode indicated by the first indication information.

For another example, the time domain behavior of the CSI reporting configuration may be aperiodic reporting, and the first indication information may be jointly indicated by an RRC message and DCI. For example, the network device may send the CSI report configuration and the CSI resource configuration in advance through an RRC message. Thereafter, the network device may trigger CSI reporting and/or receive reference signals through the DCI. The first indication information may be carried in the DCI. That is, the terminal device may perform CSI reporting according to the CSI reporting mode indicated by the DCI.

It should be understood that, various possible designs for carrying the first indication information are listed in the foregoing with reference to different implementation manners, but this should not limit the present application in any way, as long as the network device sends the indication information of the first reporting manner to the terminal device, which all shall fall within the protection scope claimed in the present application.

Based on the technical scheme, the terminal device can perform channel measurement and report based on the reference signal received by each receiving beam, so that the network device can acquire more information about the pairing relationship between the transmitting beam and the receiving beam. The network equipment can carry out more reasonable beam management according to the beam pairing relation, thereby obtaining the gain of beam forming to a greater extent and being beneficial to improving the system performance. And the terminal device can perform channel measurement and report based on the reference signals received by the multiple receiving beams, so that the network device can acquire the pairing relationship between the multiple receiving beams and the transmitting beam, and when the terminal device tilts or overturns to cause the TCI state list corresponding to a certain receiving beam to be invalid, the network device can also switch to the transmitting beam corresponding to other wireless links with better quality, so that the terminal device can switch to the corresponding receiving beam receiving signal, and thus, the frequent triggering of the beam failure recovery process can be avoided. Therefore, the robustness of the beam pairing relationship can be improved, the robustness of the communication system can be improved, the transmission efficiency can be improved, and the user experience can be improved.

In consideration of robustness, the network device should monitor the quality of the wireless link based on different receiving beams of the terminal device as much as possible, so that even if the receiving quality of the currently used receiving beam is reduced due to tilting or overturning of the terminal device, the terminal device can perform receiving beam switching when monitoring other receiving beams with better link quality, and further can avoid frequently triggering a beam failure recovery process.

In view of the above, the present application further provides a beam diversity quality monitoring mechanism. The beam diversity quality monitoring mechanism aims at monitoring the quality of a radio link based on different received beams of a terminal device. The quality of multiple wireless links based on multiple beams or beam pairs may be maintained between the network device and the terminal device. The terminal device may measure and obtain the quality of the multiple wireless links corresponding to the multiple beams or beam pairs (that is, measure the quality of the multiple beams) by receiving configuration information of the network device, and report a measured result according to the configuration of the network device, so that the network device can obtain a quality monitoring result of the multiple wireless links.

Therefore, after the network device receives the one or more CSIs reported by the terminal device in step 220, the set of reference signal resources for beam diversity quality monitoring may be further determined. Reference signals transmitted based on the set of reference signal resources may be used to detect the quality of multiple wireless links corresponding to multiple beams or beam pairs.

After step 230, optionally, the method 200 further comprises: in step 280, the terminal device receives third indication information, where the third indication information is used to indicate a plurality of reference signal resources, and the plurality of reference signal resources are determined by at least two sets of measurement reports.

Accordingly, in step 280, the network device transmits the third indication information, where the third indication information is used to indicate a plurality of reference signal resources, and the plurality of reference signal resources are determined by at least two sets of measurement reports.

The plurality of reference signal resources indicated by the third indication information are reference signal resources used for the beam diversity quality monitoring.

Specifically, the measurement reports may be the measurement reports described in steps 210 and 220 above, each set of measurement reports may correspond to one spatial receiving filter, and different sets of measurement reports correspond to different spatial receiving filters. Optionally, the third indication information includes identities of a plurality of reference signal resources, and the identities of the plurality of reference signal resources are from at least two sets of the measurement reports. In other words, the plurality of reference signal resources indicated by the third indication information may correspond to at least two spatial reception filters. It should be understood that the identifier of the reference signal resource is only an example of the third indication information, and should not be limited in any way in this application, and the third indication information may also be other information for indicating the reference signal resource.

In one implementation, the plurality of reference signal resources indicated by the third indication information correspond to a plurality of spatial receiving filters one to one.

In other words, each reference signal resource may correspond to a spatial receive filter, or each reference signal resource may be determined by a set of measurement reports as described above. The plurality of reference signal resources may be configured by the network device to the terminal device for beam diversity quality monitoring. In one possible design, the plurality of reference signal resources indicated by the third indication information may be configured through higher layer signaling, e.g., through RRC message configuration of a set of reference signal resources, e.g., denoted as q_AThe set of reference signal resources q_AMay include a plurality of reference signal resources corresponding one-to-one to the plurality of spatial reception filters as described above.

In another implementation, the plurality of reference signal resources indicated by the third indication information may correspond to a plurality of spatial reception filters.

For example, the I reference signal resources may correspond to J spatial receive filters, (I > J > 1, I, J being integers). Specifically, L of the I reference signal resources may correspond to J spatial receive filters, and the remaining I-J reference signal resources may correspond to at least one of the J spatial receive filters. Wherein L is not less than J, and L is an integer. It is to be understood that, when L is J, the L reference signal resources correspond to J spatial receiving filters one to one, and when L > J, at least J of the L reference signal resources correspond to J spatial receiving filters one to one.

In this design, the plurality of reference signal resources indicated by the third indication information may be divided into a first resource group and a second resource group. Wherein, the reference signal resources in the first resource group may correspond to the I-L reference signal resources, and may be used for beam failure monitoring defined in the existing protocol; the reference signal resources in the second resource group may correspond to the L reference signal resources, and may be used for beam diversity quality monitoring.

In particular, when based on the use forWhen the measurement result obtained by performing the beam quality measurement on the reference signal resource for beam failure monitoring (i.e., the reference signal resource in the first resource group) satisfies the preset condition, the measurement result may be counted in the beam failure count. For example, the first resource group may be a set q of reference signal resources configured in Beam-Failure-Detection-RS-resource configuration as described above₀. When the number of beam failures is greater than the maximum number of beam failure instances (beamf ailurelnstancememaxcount), a beam failure recovery procedure may be triggered. It should be understood that the specific procedures and methods for beam failure detection may be referred to in the art, and a detailed description thereof is omitted herein for brevity.

In contrast, when beam quality measurement is performed based on reference signal resources used for beam diversity quality monitoring (i.e., reference signal resources in the second resource group), the obtained measurement results are not taken into account in the beam failure number statistics.

The measurement results of beam quality monitoring due to the above L reference signal resources may not be counted into the beam failure count. At this time, the network device may notify the terminal device of the L reference signal resources through additional indication information, in addition to indicating the I reference signal resources to the terminal device through the third indication information. Thus, after step 230, optionally, the method 200 further comprises step 290: the network device sends fifth indication information, where the fifth indication information is used to indicate the L reference signal resources.

Accordingly, in step 290, the terminal device receives the fifth indication information.

Specifically, the reference signal resources in the second resource group indicated by the fifth indication information may be the L reference signal resources. The fifth indication information may specifically be an identifier or an identifier sequence of the L reference signal resources, or an index sequence of the L reference signal resources in the I reference signal resources. The fifth indication information may also indicate the number L of reference signal resources, for example, the L reference signal resources may be placed at the very beginning or the very end of the I reference signals in sequence by agreement, and the terminal device may know which reference signal resources are not counted in the statistics of the number of beam failures by knowing the number L.

It should be understood that the above lists two possible implementations of configuring the reference signal resource, but this should not limit the present application in any way, and the present application does not limit the specific way of configuring the reference signal resource.

Optionally, the method 200 further comprises: the network device transmits a reference signal based on the plurality of reference signal resources.

Accordingly, the terminal device receives the reference signal based on the plurality of reference signal resources.

The terminal device may receive the reference signal transmitted by the network device based on the plurality of reference signal resources based on the third indication information received in step 280 to evaluate the radio link quality.

It should be understood that, in the beam diversity quality monitoring, a specific method for the terminal device to perform beam quality measurement based on the configured reference signal resource may refer to a specific method for performing beam quality measurement based on the reference signal resource in the beam failure monitoring in the prior art, and a detailed description of the specific method is omitted here for brevity. It should be noted that, in the beam diversity quality monitoring proposed in the present application, the reference signal resource configured by the network device may correspond to multiple receiving beams of the terminal device, and thus, quality monitoring may be performed on multiple wireless links corresponding to the multiple receiving beams.

After the network device obtains the measurement report of the terminal device based on the spatial receiving filter by the packet reporting method based on the spatial receiving filter and configures the reference signal resource for beam diversity quality monitoring, the terminal device can obtain the beam quality based on different spatial receiving filters by the beam diversity quality monitoring mechanism.

No matter the transmission of the control channel or the data channel, the terminal device obtains the indication information of a spatial receiving filter indicated by the network device through signaling, such as the above-mentioned TCI status list, and the specific indication method thereof may refer to the prior art and is not described herein again. When the transmission quality of the control channel or the data channel is degraded, for example, the BLER, SNR or SINR of the control channel is degraded, the terminal device may find that the beam quality corresponding to the currently used spatial receiving filter is degraded through the beam diversity quality monitoring mechanism, and the beam quality corresponding to the other spatial receiving filters is increased or maintained at a better level. Wherein the better level may be a threshold, for example. At this time, the terminal device can avoid the entry beam failure recovery by the following implementation manner. In one implementation, the terminal device may first adjust the spatial receiving filter by itself, and may report the adjustment information to the network device after the adjustment. The implementation mode has the advantages that the terminal equipment directly adjusts the spatial receiving filter, the communication of the current link is not easy to interrupt, the link quality after the spatial receiving filter is adjusted can possibly recover to be above the threshold, and normal communication can be guaranteed. The terminal device may report the adjustment information of the spatial receiving filter (i.e., the adjustment information of the received beam) to the network device on the premise of ensuring normal communication, so as to help the network device adjust the transmitted beam.

Optionally, the terminal device may report the adjustment information of the spatial receiving filter through a Physical Random Access Channel (PRACH).

Alternatively, the terminal device may report the adjustment information of the spatial reception filter through a Physical Uplink Control Channel (PUCCH).

The adjustment information of the spatial receiving filter is an identifier corresponding to the spatial receiving filter selected by the terminal device, the identifier may be indication information of a reference signal resource corresponding to the spatial receiving filter, and the indication information of the reference signal resource may be, for example, an index of the reference signal resource in the reference signal resource set or an identifier of the reference signal resource, which is listed above, and the application is not limited thereto. It is to be understood that the reference signal resource is one of a set of reference signal resources configured for beam diversity quality monitoring.

Optionally, the network device notifies the terminal device of the adjustment information of the transmission beam. The notification information may be carried in RRC, MAC-CE or dynamic signaling, for example. The adjustment information may be an indication information (indication), an acknowledgement information (acknowledgement) or a response (response).

Alternatively, the network device need not notify the terminal device of the adjustment information of the transmission beam. At this time, the terminal device may default to the network device to adjust the transmission beam according to the adjustment information of the spatial receiving filter.

In another implementation, the terminal device may report the better spatial receiving filter to the network device according to the beam diversity quality monitoring result, and then the network device selects and indicates the corresponding spatial receiving filter to the terminal device.

Based on the above technical solution, the network device may configure reference signal resources corresponding to different receiving beams for the terminal device, so that when the terminal device tilts or overturns to cause the reception quality of a part of the receiving beams to be degraded, the quality of the wireless link may be evaluated by using other receiving beams. Therefore, failure recovery of frequent beam entering can be avoided, and the robustness of the beam pairing relationship can be improved, so that the robustness of a transmission system can be improved, and the user experience can be improved.

The application also provides a method for receiving and sending the reference signal, which is beneficial to improving the robustness and the user experience of the transmission system.

Fig. 3 is a schematic flow chart diagram of a method 300 of receiving and transmitting reference signals provided by another embodiment of the present application, shown from the perspective of device interaction. As shown, the method 300 shown in fig. 3 includes: step 310 to step 330. The method 300 is described in detail below with reference to fig. 3.

In step 310, the network device transmits third indication information indicating a plurality of reference signal resources corresponding to at least two spatial receiving filters.

Accordingly, in step 310, the terminal device receives third indication information indicating a plurality of reference signal resources corresponding to at least two spatial reception filters.

Specifically, the plurality of reference signal resources indicated by the third indication information may be used for beam diversity quality monitoring. The plurality of reference signal resources may correspond to at least two spatial receive filters. Any one of the spatial receiving filters may correspond to one or more reference signal resources. If the terminal equipment carries out grouping report based on the spatial receiving filter, each group of measurement report is obtained based on the reference signal measurement received by one spatial receiving filter. The measurement report may be a measurement report reported based on a spatial receive filter packet as described in method 200 above.

It should be understood that beam diversity quality monitoring has been described in detail above in method 200 and will not be described again for brevity.

It should also be understood that step 310 in method 300 is the same as step 280 in method 200 above. Since step 280 has already been described in detail above in conjunction with fig. 2, it is not repeated here for brevity.

In step 320, the network device transmits a reference signal on the plurality of reference signal resources.

Accordingly, in step 320, the terminal device receives reference signals on the plurality of reference signal resources.

Optionally, the plurality of reference signal resources indicated by the third indication information correspond to a plurality of spatial receiving filters one to one.

Optionally, the plurality of reference signal resources indicated by the third indication information may correspond to a plurality of spatial reception filters. For example, I reference signal resources correspond to J spatial receive filters, I > J > 1, and I, J are integers.

The plurality of reference signal resources includes a first resource group and a second resource group, the second resource group includes L (L is more than or equal to J) reference signal resources corresponding to J spatial receiving filters, the first resource group includes I-L reference signal resources corresponding to at least one of the J spatial receiving filtersReference is made to the signal resources. Wherein, only the Beam quality monitoring result of the reference signal resource in the first resource group can be counted into the statistics of the number of Beam failures, for example, the reference signal resource in the first resource group can be q in Beam-Failure-Detection-RS-resource configuration described above₀。

Optionally, the method 300 further comprises: in step 330, the network device sends fifth indication information, where the fifth indication information indicates reference signal resources in the second resource group.

Accordingly, in step 330, the terminal device receives the fifth indication information.

It should be understood that step 330 in method 300 is the same as step 290 in method 200 above. Since the detailed description of step 290 has already been made in conjunction with fig. 2, it is not repeated here for brevity.

Based on the above technical solution, the network device may configure reference signal resources corresponding to different receiving beams for the terminal device, so that when the terminal device tilts or overturns to cause the reception quality of a part of the receiving beams to be degraded, the quality of the wireless link may be evaluated by using other receiving beams. Therefore, the failure recovery of frequent beam entering can be avoided, the robustness of a transmission system can be improved, and the user experience can be improved.

The application also provides a method for receiving and sending the CSI, which is beneficial to improving the robustness of the system.

Fig. 4 is a schematic flow chart of a method for receiving and transmitting CSI provided by another embodiment of the present application, which is shown from the perspective of device interaction. As shown, the method 400 shown in fig. 4 includes steps 410 through 450. The method 400 is described in detail below in conjunction with fig. 4.

In step 410, the terminal device generates CSI, which includes one or more sets of measurement information, each set of measurement information is measured based on a plurality of reference signals that can be received simultaneously, and each set of measurement information includes at least a first indication bit for indicating the number of spatial reception filters that receive the plurality of reference signals.

In step 420, the terminal device transmits the CSI.

Accordingly, in step 420, the network device receives the CSI.

In step 430, the network device determines whether multiple reference signals corresponding to each set of measurement information are received by the same spatial reception filter according to the CSI.

That is, the terminal device may perform measurement based on multiple reference signals that can be received simultaneously, and report the measurement result based on the multiple reference signals that can be received simultaneously to the network device in the form of measurement information.

Each set of measurement information may correspond to multiple reference signal resources, for example, each set of measurement information may include identifiers of multiple reference signal resources, or each set of measurement information may include RSRP measured according to multiple reference signal resources agreed in advance. And the reference signals are transmitted based on the reference signal resources, so each set of measurement information may correspond to multiple reference signals.

The measurement information may further include an indication bit for indicating the number of spatial receiving filters receiving the multiple reference signals, so that the network device knows whether the multiple reference signals corresponding to each set of measurement information can be received by one or multiple spatial receiving filters. Thereby being beneficial to the network equipment to acquire more information about the corresponding relation between the receiving beam and the transmitting beam.

For example, when the first indication bit indicates that the multiple reference signals corresponding to the measurement information are received based on the same spatial receiving filter, the network device may directly determine that the multiple reference signal resources in the measurement information correspond to the same spatial receiving filter, that is, may determine that the transmission beams corresponding to the multiple reference signal resources correspond to one receiving beam.

Optionally, before step 410, the method 400 further comprises: in step 440, the network device transmits a reference signal, which is used for channel measurement.

Accordingly, in step 440, the terminal device receives a reference signal, which is used for channel measurement.

It should be understood that step 440 is the same as step 240 in method 200 above, and therefore, for brevity, will not be described again.

It should be noted that the term "can be received simultaneously" as used herein means that the terminal device has the capability of receiving multiple reference signals simultaneously, and does not mean that the multiple reference signals are always received simultaneously by the terminal device. Whether or not it can be received simultaneously is related to the capabilities of the terminal device.

For example, assuming that the terminal device has the capability of receiving through two receiving beams at the same time, referred to as receiving beam #1 and receiving beam #2, and the transmitting beams #1- #8 of the network device are transmitted by polling, it is assumed that the channel quality of the transmitting beam #1 is the best for the receiving beam #1 and the channel quality of the transmitting beam #6 is the best for the receiving beam # 2. Since the reception beams #1 and #2 can be received simultaneously, the transmission beams #1 and #6 are transmitted by polling, but if they are transmitted simultaneously by the network device, the terminal device can also receive simultaneously. If the terminal device can receive only one reception beam at the same time, the transmission beams #1 and #6 in the above example can be considered to be simultaneously received by the terminal device only if received by the same reception beam.

In the prior art, a terminal device may report two reference signal resource identifiers, where the two reference signal resource identifiers may be received by the terminal device at the same time, but the two reference signal resource identifiers are not distinguished in the prior art, and are received by the same spatial receiving filter or multiple spatial receiving filters of the terminal device.

In this embodiment, the terminal device may report the measurement result in groups according to multiple reference signals that can be received simultaneously, and further indicate, through the first indication bit, whether the multiple reported reference signals that can be received simultaneously are received by the same receive beam simultaneously or are received by multiple receive beams simultaneously while reporting the measurement result. To facilitate differentiation from the above measurement reporting based on packet reporting by the spatial receive filter, in this embodiment, multiple measurement results measured based on multiple reference signals that can be received simultaneously can be grouped into a set of measurement information.

Wherein each measurement may include one or more of:

an identification of a reference signal resource; and

reference signal received power information.

It should be understood that the identification of the reference signal resource and the reference signal received power information correspond. That is, each reference signal received power information may be obtained by receiving a reference signal and performing measurement based on a reference signal resource indicated by an identifier of one reference signal resource. However, the specific content reported by the terminal device is not limited in the present application, and as described above, the measurement result may only include the identifier of the reference signal resource, may also only include the reference signal received power information, may also include the identifier of the reference signal resource and the reference signal received power information, and may even include other information besides the identifier of the reference signal resource or the reference signal received power information.

In addition, the identifier of the reference signal resource and the specific content of the reference signal received power information have been described in detail in the above method 200, and are not described herein again for brevity.

In addition to the multiple measurement results, a set of measurement information may further include a first indication bit for indicating whether multiple reference signals corresponding to the multiple measurement results in the set of measurement information are received by the same spatial reception filter.

In one implementation, the protocol may predefine a new reporting amount reporting quality, which may be indicated by a higher layer parameter. The protocol may further configure a format corresponding to the report quality, such as "CRI-RSRP-nrofReceiveddBeam", or "CRI-nrofReceivedBeam", or "RSRP-nrofReceivedBeam", or "SSBRI-nrofReceivedBeam", or the like, by CSI report setting. Wherein "nrofReceivedBeam" is the first indication bit described above. The RSRP can directly report the absolute numerical value of the RSRP and can also report the absolute numerical value of the RSRP in a differential mode.

Optionally, under the condition that the report quality configured by the terminal device includes the first indication bit, the terminal device may set, according to an actual measurement result, the bit to "0" when reporting the CSI, to indicate that the reported reference signal resource identifier may be simultaneously received by one spatial reception filter, and set to "1" to indicate that the reported reference signal resource identifier may be simultaneously received by a plurality of spatial reception filters. In this embodiment, optionally, the protocol defaults that when the first indication bit is "1", there is a one-to-one correspondence between the reported reference signal resource identifier and the spatial receiving filters, for example, when two CRIs are reported, the two CRIs are respectively received by the two spatial receiving filters at the same time, which is also equivalent to that the default terminal device has the capability of receiving through the two spatial receiving filters at the same time.

Therefore, the network device may determine, according to the first indication bit, the number of spatial receiving filters used by the terminal device to receive the multiple reference signals, and may further determine a corresponding relationship between the reference signal resource in each set of measurement information and the spatial receiving filter of the terminal device, that is, may determine a pairing relationship between the transmit beam and the receive beam.

Optionally, if the report quality includes the first indication bit, but the network device is not configured to report based on packets received at the same time, the network device may ignore the first indication bit in the CSI at this time, or the terminal device may ignore the reporting requirement of the first indication bit in the report quality.

It should be understood that the above illustrates one possible implementation manner of sending the first indication bit while reporting the measurement result through the CSI, but this should not limit the present application in any way.

It should also be understood that the above-listed methods of indicating different values by different indication bits are only shown for ease of understanding, and the present application is not particularly limited to the correspondence relationship between the values in the indication bits and the indicated information.

In addition, the terminal device may report one or more sets of measurement information in one CSI. This is not limited in this application.

For example, a terminal device may be configured with one radio frequency channel (RF chain), each of which can only receive signals via one receive beam at a time. Therefore, whether the network device simultaneously transmits a plurality of transmission beams or polls to transmit a plurality of transmission beams, the terminal device classifies the results of measurement based on a plurality of reference signals that can be simultaneously received by one reception beam as a set of measurement information. At this time, the CSI may include a set of measurement information, and reference signals corresponding to a plurality of measurement results in the set of measurement information are received by the same receive beam.

Also for example, the terminal device may be configured with multiple radio frequency channels. Since each rf channel can only receive signals via one receive beam at the same time, the multiple rf channels can receive signals via multiple receive beams at the same time. Assuming that the terminal device is configured with radio frequency channels #1 and #2, the radio frequency channel #1 may receive signals using the reception beams #1 to #4 in sequence by means of polling, and the radio frequency channel #2 may receive signals using the reception beams #5 to #8 in sequence by means of polling. When the network device transmits multiple transmit beams, for example, it is noted as transmit beams #1 to # 8. At the same time, the radio frequency channels #1 and #2 may receive signals using one reception beam, respectively. For example, the receive beams #1 and #5 may receive the transmit beams #2 and #7 at the same time, the receive beams #2 and #6 may receive the transmit beams #3 and #5 at the same time, the receive beams #3 and #7 may receive the transmit beams #4 and #8 at the same time, and the receive beams #4 and #8 may receive the transmit beams #3 and #6 at the same time. At this time, the CSI may include four sets of measurement information, each set of measurement information includes two measurement results, and the reference signals corresponding to the two measurement results in each set of measurement information are received by two different receive beams.

It should be understood that the above listed correspondence relationship between the receiving beam and the transmitting beam is only an exemplary illustration for easy understanding, and the application is not limited to the correspondence relationship between the receiving beam and the transmitting beam.

It should be understood that the foregoing examples are shown merely for the purpose of understanding and are not intended to limit the present application in any way. The terminal device may also report one or more sets of measurement information, if possible. For brevity, they are not illustrated one by one here. Optionally, the method 400 further comprises: step 450, the network device sends sixth indication information, where the sixth indication information is used to indicate a second reporting mode, where the second reporting mode is packet reporting based on reference signals that can be received simultaneously.

Accordingly, in step 450, the terminal device receives the sixth indication information.

As described above, the CSI reporting method may include packet reporting based on a spatial reception filter, packet reporting based on a reference signal that can be received simultaneously, and non-packet reporting. Therefore, the network device can indicate the reporting mode to the terminal device in advance.

In this embodiment, optionally, sixth indication information for indicating the second reporting mode may be carried in the RRC message. For example, the CSI reporting configuration may be carried in an RRC message, or may also be carried in a packet reporting parameter of the CSI reporting configuration. The specific method for carrying the sixth indication information through the RRC message may be similar to the specific method for carrying the first indication information through the RRC message in step 270 of the method 200, and a detailed description of the specific method is omitted here for brevity.

Optionally, the sixth indication information may be carried in one or more of the following items: RRC message, MAC CE, and DCI. The specific method for carrying the sixth indication information through different signaling may be similar to the specific method for carrying the first indication information through different signaling in step 270 of the method 200, and a detailed description of the specific method is omitted here for brevity.

Based on the above technical solution, when reporting CSI based on a plurality of reference signals received simultaneously, the terminal device carries an indication bit for indicating the number of spatial receiving filters receiving the plurality of reference signals, so that the network device can obtain a corresponding relationship between a reference signal resource and the spatial receiving filters, that is, can obtain a pairing relationship between a plurality of receiving beams and a transmitting beam. When the terminal equipment tilts or overturns to cause that a TCI state list corresponding to a certain receiving beam fails, other receiving beams with better link quality can be switched to, so that the frequent triggering of a beam failure recovery process can be avoided. Therefore, the robustness of the beam pairing relation is improved, the robustness of a transmission system is improved, the transmission efficiency is improved, and the user experience is improved. In addition, the transmitting beams corresponding to different receiving beams can be selected to communicate with different terminal devices according to the pairing relation of the transmitting beams and the receiving beams, so that the interference among multiple users can be avoided to the greatest extent, namely, the anti-interference performance is improved. Overall, system performance is improved.

It should be understood that, in the foregoing embodiments, the sequence numbers of the processes do not imply an execution sequence, and the execution sequence of the processes should be determined by functions and internal logic of the processes, and should not constitute any limitation to the implementation process of the embodiments of the present application.

The method provided by the embodiment of the present application is described in detail above with reference to fig. 2 to 4. Hereinafter, the apparatus provided in the embodiment of the present application will be described in detail with reference to fig. 5 to 7.

Fig. 5 is a schematic block diagram of a communication device provided in an embodiment of the present application. As shown in fig. 5, the communication device 500 may include a processing unit 510 and a transceiving unit 520.

In one possible design, the communication apparatus 500 may correspond to the terminal device in the above method embodiment, and may be the terminal device or a chip configured in the terminal device, for example.

In particular, the communication apparatus 500 may correspond to a terminal device in the

method

200, 300 or 400 according to an embodiment of the present application, and the communication apparatus 500 may include means for performing the method performed by the terminal device in the method 200 in fig. 2, the method 300 in fig. 3 or the method 400 in fig. 4. Also, the units and other operations and/or functions described above in the communication apparatus 500 are respectively for implementing the corresponding flows of the method 200 in fig. 2, the method 300 in fig. 3, or the method 400 in fig. 4.

When the communication device 500 is used to execute the method 200 in fig. 2, the processing unit 510 may be used to execute step 210 in the method 200, and the transceiver unit 520 may be used to execute steps 220, 240 to 290 in the method 200.

When the communication apparatus 500 is used to execute the method 300 in fig. 3, the transceiver unit 510 can be used to execute steps 310 to 330 in the method 300.

When the communication apparatus 500 is configured to perform the method 400 in fig. 4, the processing unit 510 may be configured to perform step 410 in the method 400, and the transceiver unit 510 may be configured to perform step 420, step 440, and step 450 in the method 400.

It should be understood that the specific processes of the units for executing the corresponding steps are already described in detail in the above method embodiments, and therefore, for brevity, detailed descriptions thereof are omitted.

It should be understood that in the communication apparatus 500, the processing unit 510 may correspond to the processor 601 in the terminal device 600 shown in fig. 6, and the transceiving unit 520 may correspond to the transceiver 602 in the terminal device 600 shown in fig. 6.

In another possible design, the communication apparatus 500 may correspond to the network device in the above method embodiment, and may be, for example, a network device or a chip configured in a network device.

In particular, the communication apparatus 500 may correspond to the network device in the

method

200, 300 or 400 according to the embodiment of the present application, and the communication apparatus 500 may include means for performing the method performed by the network device in the method 200 in fig. 2, the method 300 in fig. 3 or the method 400 in fig. 4. Also, the units and other operations and/or functions described above in the communication apparatus 500 are respectively for implementing the corresponding flows of the method 200 in fig. 2, the method 300 in fig. 3, or the method 400 in fig. 4.

When the communication device 500 is used to execute the method 200 in fig. 2, the transceiver 520 may be used to execute the steps 220 and 240 to 290 in the method 200, and the processing unit 510 may be used to execute the step 230 in the method 200.

When the communication apparatus 500 is used to execute the method 300 in fig. 3, the transceiver unit 520 may be used to execute steps 310 to 330 in the method 300.

When the communication apparatus 500 is used to perform the method 400 in fig. 4, the transceiver unit 520 may be used to perform the steps 420, 440 and 450 in the method 400, and the processing unit 510 may be used to perform the step 430 in the method 400.

It is also understood that the processing unit 510 in the communication apparatus 500 may correspond to the processor 710 in the network device 700 shown in fig. 7, and the transceiving unit 520 may correspond to the transceiver 720 in the network device 700 shown in fig. 7.

Fig. 6 is a schematic structural diagram of a terminal device 600 according to an embodiment of the present application. As shown, the terminal device 600 includes a processor 601 and a transceiver 602. Optionally, the terminal device 500 further comprises a memory 603. Wherein, the processor 601, the transceiver 602 and the memory 603 can communicate with each other via the internal connection path to transmit control and/or data signals, the memory 603 is used for storing a computer program, and the processor 601 is used for calling and running the computer program from the memory 603 to control the transceiver 602 to transmit and receive signals. Optionally, the terminal device 500 may further include an antenna 504, configured to send uplink data or uplink control signaling output by the transceiver 602 by using a wireless signal.

The processor 601 and the memory 603 may be combined into a processing device, and the processor 601 is configured to execute the program code stored in the memory 603 to implement the above-described functions. It should be understood that the processing devices shown in the figures are examples only. In particular implementations, the memory 603 may also be integrated into the processor 601 or may be separate from the processor 601. This is not limited in this application.

The terminal device 600 further includes an antenna 610, configured to send out uplink data or uplink control signaling output by the transceiver 602 through a wireless signal.

When program instructions stored in memory 603 are executed by processor 601, processor 601 is configured to generate one or more CSIs and to control transceiver 602 to transmit the one or more CSIs. Each CSI comprises one or more sets of measurement reports, each set of measurement reports is measured based on the reference signal received by one spatial receiving filter, and the spatial receiving filters corresponding to the measurement reports are different from each other when the total number of the measurement reports is multiple.

In particular, the terminal device 600 may correspond to the terminal device in the

method

200, 300 or 400 according to an embodiment of the present application, and the terminal device 600 may include means for performing the method performed by the terminal device in the method 200 in fig. 2, the method 300 in fig. 3 or the method 400 in fig. 4. Also, the units and other operations and/or functions described above in the terminal device 600 are respectively for implementing the corresponding flows of the method 200 in fig. 2, the method 300 in fig. 3 or the method 400 in fig. 4. The processor 601 may be configured to perform the actions implemented inside the terminal device described in the foregoing method embodiments, and the transceiver 602 may be configured to perform the actions transmitted to or received from the network device by the terminal device described in the foregoing method embodiments. Please refer to the description of the previous embodiment of the method, which is not repeated herein.

Optionally, the terminal device 600 may further include a power supply 605 for supplying power to various devices or circuits in the terminal device.

In addition to this, in order to further improve the functions of the terminal apparatus, the terminal apparatus 600 may further include one or more of an input unit 606, a display unit 607, an audio circuit 608, a camera 609, a sensor 622, and the like, which may further include a speaker 6082, a microphone 6084, and the like.

Fig. 7 is a schematic structural diagram of a network device 700 according to an embodiment of the present application. As shown, the network device 700 includes a processor 710 and a transceiver 720. Optionally, the network device 700 further comprises a memory 730. The processor 710, the transceiver 720 and the memory 730 communicate with each other via the internal connection path to transmit control and/or data signals, the memory 730 is used for storing a computer program, and the processor 710 is used for calling and running the computer program from the memory 730 to control the transceiver 720 to transmit and receive signals.

The processor 710 and the memory 730 may be combined into a single processing device, and the processor 710 may be configured to execute the program codes stored in the memory 730 to implement the functions described above. In particular implementations, the memory 730 may be integrated with the processor 710 or may be separate from the processor 710.

The network device 700 may further include an antenna 740, configured to send the downlink data or the downlink control signaling output by the transceiver 720 through a wireless signal.

When the program instructions stored in the memory 730 are executed by the processor 710, the processor 710 is configured to control the transceiver 720 to receive one or more CSIs and to determine, according to the one or more CSIs, that each set of measurement reports corresponds to one spatial reception filter, and in a case where multiple sets of measurement reports are received, the spatial reception filters corresponding to the sets of measurement reports are different from each other.

In particular, the network device 700 may correspond to a network device in the

method

200, 300 or 400 according to an embodiment of the present application, and the network device 700 may include means for performing the method performed by the network device in the method 200 in fig. 2, the method 300 in fig. 3 or the method 400 in fig. 4. Moreover, each unit and the other operations and/or functions in the network device 700 are respectively for implementing the corresponding flows of the method 200 in fig. 2, the method 300 in fig. 3, or the method 400 in fig. 4, and specific processes for each unit to execute the corresponding steps have been described in detail in the foregoing method embodiment, and are not described again here for brevity.

The processor 710 may be configured to perform the actions described in the previous method embodiments that are implemented inside the network device, and the transceiver 720 may be configured to perform the actions described in the previous method embodiments that the network device transmits to or receives from the terminal device. Please refer to the description of the previous embodiment of the method, which is not repeated herein.

It should be understood that the processor in the embodiments of the present application may be a Central Processing Unit (CPU), and the processor may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like.

It will also be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of Random Access Memory (RAM) are available, such as Static RAM (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct bus RAM (DR RAM).

According to the method provided by the embodiment of the present application, the present application further provides a computer program product, which includes: computer program code which, when run on a computer, causes the computer to perform the method in the embodiment shown in fig. 2, 3 or 4.

There is also provided a computer readable medium having program code stored thereon, which when run on a computer causes the computer to perform the method of the embodiment shown in fig. 2, 3 or 4, according to the method provided by the embodiment of the present application.

According to the method provided by the embodiment of the present application, the present application further provides a system, which includes the foregoing one or more terminal devices and one or more network devices.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded or executed on a computer, cause the flow or functions according to embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more collections of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., Digital Versatile Disk (DVD)), or a semiconductor medium. The semiconductor medium may be a solid state disk.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units 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 or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: 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.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for transmitting channel state information, CSI, comprising:

generating one or more CSI, wherein each CSI comprises one or more groups of measurement reports, each group of measurement reports are obtained by measurement based on a reference signal received by one spatial receiving filter, and the spatial receiving filters corresponding to the groups of measurement reports are different from each other under the condition that the total number of the measurement reports is multiple;

transmitting the one or more CSIs.

2. The method of claim 1, wherein the method further comprises:

receiving first indication information, where the first indication information is used to indicate a first reporting mode, and the first reporting mode is packet reporting based on a spatial reception filter.

3. The method according to claim 1 or 2, wherein the first indication information is carried in a CSI reporting configuration of a radio resource control, RRC, message or the first indication information is carried in a packet reporting parameter of the CSI reporting configuration.

4. The method of any of claims 1 to 3, further comprising:

receiving second indication information, wherein the second indication information is used for indicating one or more of the following items:

the number of groups of measurement reports reported by each CSI;

the total group number of measurement reports reported by the multiple CSI; and

and reporting the number of the CSI when the measurement report is reported through a plurality of CSI.

5. The method of claim 4, wherein the method further comprises:

sending capability information indicating one or more of:

the number of spatial receive filters;

the maximum group number of measurement reports reported by each CSI;

the maximum value of the total group number of the measurement reports reported by the multiple CSI; and

and reporting the maximum number of the CSI when the measurement report is reported through a plurality of CSI.

6. The method of any of claims 1 to 4, further comprising:

receiving third indication information indicating a plurality of reference signal resources determined by at least two sets of measurement reports.

7. A method of receiving channel state information, CSI, comprising:

receiving one or more CSI (channel state information), wherein each CSI comprises one or more groups of measurement reports, each group of measurement reports are obtained by measuring based on a reference signal received by one spatial receiving filter, and the spatial receiving filters corresponding to the groups of measurement reports are different from each other;

and determining that each group of measurement reports corresponds to one spatial receiving filter according to the one or more CSI, wherein the spatial receiving filters corresponding to the groups of measurement reports are different from each other under the condition that a plurality of groups of measurement reports are received.

8. The method of claim 7, wherein the method further comprises:

and sending first indication information, wherein the first indication information is used for indicating a first reporting mode, and the first reporting mode is packet reporting based on a spatial receiving filter.

9. The method according to claim 7 or 8, wherein the first indication information is carried in a CSI reporting configuration of a radio resource control, RRC, message or the first indication information is carried in a packet reporting parameter of the CSI reporting configuration.

10. The method of any of claims 7 to 9, further comprising:

sending second indication information, wherein the second indication information is used for indicating one or more of the following items:

the number of groups of measurement reports reported by each CSI;

the total group number of measurement reports reported by the multiple CSI; and

11. The method of claim 10, wherein the method further comprises:

receiving capability information indicating one or more of:

the number of spatial receive filters;

the maximum group number of measurement reports reported by each CSI;

12. The method of any of claims 7 to 11, further comprising:

transmitting third indication information indicating a plurality of reference signal resources determined by at least two sets of measurement reports.

13. The method of claim 6 or 12, wherein the plurality of reference signal resources correspond one-to-one to a plurality of spatial receive filters.

14. The method of claim 6 or 12, wherein the plurality of reference signal resources comprises a first set of resources and a second set of resources, wherein only measurements of reference signal resources in the first set of resources are logged in a beam failure count.

15. The method of any one of claims 1 to 14, wherein each set of measurement reports further comprises a set identification, each set identification corresponding to one spatial receive filter.

16. A communications apparatus, comprising:

the processing unit is used for generating one or more Channel State Information (CSI), each CSI comprises one or more groups of measurement reports, each group of measurement reports is obtained by measurement based on a reference signal received by one spatial receiving filter, and the spatial receiving filters corresponding to the groups of measurement reports are different from each other under the condition that the total number of the measurement reports is multiple;

a transceiver unit configured to transmit the one or more CSIs.

17. The communications apparatus as claimed in claim 16, wherein the transceiver unit is further configured to receive a first indication information, the first indication information indicating a first reporting mode, and the first reporting mode is a packet reporting based on a spatial receive filter.

18. The communications apparatus according to claim 16 or 17, wherein the first indication information is carried in a CSI reporting configuration of a radio resource control, RRC, message or the first indication information is carried in a packet reporting parameter of the CSI reporting configuration.

19. The communication apparatus according to any of the claims 16 to 18, wherein the transceiver unit is further configured to receive second indication information indicating one or more of:

the number of groups of measurement reports reported by each CSI;

the total group number of measurement reports reported by the multiple CSI; and

20. The communications apparatus of claim 19, the transceiver unit further configured to transmit capability information indicating one or more of:

the number of spatial receive filters;

the maximum group number of measurement reports reported by each CSI;

21. The communications apparatus of any of claims 16 to 20, wherein the transceiver unit is further configured to receive third indication information indicating a plurality of reference signal resources determined by at least two sets of measurement reports.

22. A communications apparatus, comprising:

the receiving and sending unit is used for receiving one or more CSI (channel state information), each CSI comprises one or more groups of measurement reports, each group of measurement reports are obtained by measuring based on a reference signal received by one spatial receiving filter, and the spatial receiving filters corresponding to the groups of measurement reports are different from each other;

and the processing unit is used for determining that each group of measurement reports corresponds to one spatial receiving filter according to the one or more CSI, and the spatial receiving filters corresponding to the groups of measurement reports are different from each other under the condition that a plurality of groups of measurement reports are received.

23. The communications apparatus as claimed in claim 22, wherein the transceiver unit is further configured to transmit first indication information, the first indication information indicating a first reporting mode, and the first reporting mode is a packet reporting mode based on a spatial receive filter.

24. The communications apparatus according to claim 22 or 23, wherein the first indication information is carried in a CSI reporting configuration of a radio resource control, RRC, message or the first indication information is carried in a packet reporting parameter of the CSI reporting configuration.

25. The communication apparatus according to any of the claims 22 to 24, wherein the transceiver unit is further configured to send second indication information indicating one or more of the following:

the number of groups of measurement reports reported by each CSI;

the total group number of measurement reports reported by the multiple CSI; and

26. The communications apparatus of claim 25, the transceiver unit further configured to receive capability information indicating one or more of:

the number of spatial receive filters;

the maximum group number of measurement reports reported by each CSI;

27. The communications apparatus of any of claims 22 to 26, wherein the transceiver unit is further configured to send third indication information indicating a plurality of reference signal resources determined by at least two sets of measurement reports.

28. The communications apparatus of claim 21 or 27, wherein the plurality of reference signal resources correspond one-to-one with a plurality of spatial receive filters.

29. The communications apparatus of claim 21 or 27, wherein the plurality of reference signal resources comprises a first set of resources and a second set of resources, wherein only measurements of reference signal resources in the first set of resources are logged in a beam failure count.

30. A communications apparatus as claimed in any of claims 16 to 29, wherein each set of measurement reports further comprises a set identity, each set identity corresponding to a spatial receive filter.

31. A computer-readable medium, comprising a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 15.