CN112054831B

CN112054831B - Feedback method and device of channel state information

Info

Publication number: CN112054831B
Application number: CN201910492931.0A
Authority: CN
Inventors: 吴晔; 王鹏
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2022-04-12
Anticipated expiration: 2039-06-06
Also published as: CN112054831A

Abstract

The embodiment of the application provides a method and a device for feeding back channel state information, relates to the technical field of communication, and is used for supporting a terminal to realize feedback of the channel state information of a high rank. The method comprises the following steps: the terminal generates first channel state information and second channel state information; and then, the terminal sends the first channel state information and the second channel state information to the network equipment. Wherein the first channel state information is determined by a first set of antenna measurement reference signals of the terminal and the second channel state channel is determined by a second set of antenna measurement reference signals of the terminal. Alternatively, the first channel state information is a first portion of third channel state information, the second channel state information is a second portion of the third channel state information, and the third channel state information is channel state information determined by the terminal measuring the reference signal. The method and the device are suitable for the feedback process of the channel state information.

Description

Feedback method and device of channel state information

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for feeding back channel state information.

Background

The advent of Multiple Input Multiple Output (MIMO) technology has revolutionized wireless communications. By deploying multiple antennas on the transmitting end device and the receiving end device, the MIMO technology can significantly improve the performance of the wireless communication system. For example, in a diversity scenario, the MIMO technique can effectively improve transmission reliability; under a multiplexing scene, the MIMO technology can greatly improve the transmission throughput.

MIMO systems typically use precoding techniques to improve the channel to improve the spatial multiplexing (spatial multiplexing) effect. The precoding technology uses a precoding matrix matched with a channel to process a spatially multiplexed data stream (hereinafter referred to as a spatial stream for short), thereby implementing precoding on the channel and improving the reception quality of the spatial stream. The implementation of the precoding technique requires the terminal to use a codebook to feed back the channel state information to the network device.

Currently, in the R15 standard, a TypeII codebook only supports a terminal to perform rank (rank)2 transmission, that is, in a scenario in which the TypeII codebook is used, the terminal can only perform CSI feedback of a maximum rank2 of one codeword, and a network device can only adopt 2 transmission layers at most for 1 codeword according to the CSI fed back. It will be appreciated that rank is related to the throughput of data, and the larger the rank, the greater the throughput of data. Therefore, in order to improve the data throughput, the terminal needs to perform CSI feedback of high rank (for example, rank 3-4).

However, in the case of adopting the TypeII codebook, how to support high rank CSI feedback has not provided a corresponding solution in the industry.

Disclosure of Invention

The application provides a feedback method and device of channel state information, which are used for realizing feedback of high rank channel state information.

In a first aspect, a method for feeding back channel state information is provided, including: the terminal generates first channel state information and second channel state information; and the terminal sends the first channel state information and the second channel state information to the network equipment.

Based on the technical solution of the present application, compared with the prior art in which the terminal measurement reference signal generates only one piece of channel state information, in the technical solution of the embodiment of the present application, the terminal measurement reference signal may generate the first channel state information and the second channel state information. The rank of the first channel state information and the rank of the second channel state information conform to the specification of the type II codebook (that is, the rank is 2 or less). In this way, the terminal sends the first channel state information and the second channel state information to the network device, and the feedback of the channel state information higher than rank2 can be indirectly achieved.

For example, rank of the first channel state information is 1, and rank of the second channel state information is 2. In this case, the terminal sends the first channel state information and the second channel state information to the network device, which is equivalent to the terminal feeding back the channel state information of rank3 to the network device.

For another example, rank of the first channel state information is 2, and rank of the second channel state information is 2, in this case, the terminal sends the first channel state information and the second channel state information to the network device, which is equivalent to the terminal feeding back the channel state information of rank4 to the network device.

In one possible design, the first channel state information is determined by a first set of antennas of the terminal measuring reference signals; the second channel state information is determined by a second set of antennas of the terminal measuring reference signals. Based on the design, the terminal generates a plurality of channel state information by independently measuring the reference signals with a plurality of groups of antennas.

In one possible design, the first channel state information is a first portion of third channel state information, the second channel state information is a second portion of the third channel state information, and the third channel state information is channel state information determined by the terminal measuring a reference signal. Based on the design, the terminal measures the reference signal and determines third channel state information; and then, the terminal determines the first channel state information and the second channel state information according to the third channel state information through a corresponding algorithm.

In one possible design, the first channel state information and the second channel state information are carried in the same uplink control information; or, the first channel state information and the second channel state information are carried in uplink control information of different second channels.

In one possible design, the method further includes: the terminal receives first indication information, and the first indication information is used for indicating the terminal to feed back the first channel state information and the second channel state information. Based on the design, the network device sends the first indication information to the terminal to trigger the terminal to perform feedback of channel state information of the high rank.

In one possible design, the method further includes: the terminal receives second indication information, wherein the second indication information is used for indicating the terminal to feed back the first channel state information; and the terminal receives second indication information, wherein the second indication information is used for indicating the terminal to feed back second channel state information. Based on the design, the network device sends the second indication information and the third indication information to the terminal to trigger the terminal to perform feedback of the channel state information of the high rank.

In one possible design, if the terminal is configured with a first virtual terminal and a second virtual terminal, the first channel state information corresponds to the first virtual terminal, and the second channel state information corresponds to the second virtual terminal.

In one possible design, the method further includes: the terminal sends first capability indication information to the network equipment, wherein the first capability indication information is used for indicating whether the plurality of virtual terminals have the capability of cooperatively reporting the channel state information.

In one possible design, the method further includes: and the terminal sends second capability indication information to the network equipment, wherein the second capability indication information is used for indicating whether each virtual terminal in the plurality of virtual terminals has the capability of utilizing all antennas of the terminal to demodulate data. Based on the design, the network device can know whether the terminal can execute the feedback method of the channel state information of the high rank provided by the embodiment of the application.

In one possible design, the method further includes: and the terminal sends third capability indication information to the network equipment, wherein the third capability indication information is used for indicating whether the terminal can feed back channel state information determined by each group of antenna independent measurement reference signals. Based on the design, the network device can know whether the terminal can execute the feedback method of the channel state information of the high rank provided by the embodiment of the application.

In one possible design, the method further includes: and the terminal sends fourth capability indication information to the network equipment, wherein the fourth capability indication information is used for indicating whether the terminal can respectively feed back a plurality of parts in the channel state information. Based on the design, the network device can know whether the terminal can execute the feedback method of the channel state information of the high rank provided by the embodiment of the application.

In a second aspect, a method for feeding back channel state information is provided, including: the network equipment sends a channel state information reference signal to the terminal; the network equipment receives the first channel state information and the second channel state information sent by the terminal.

In one possible design, the first channel state information is determined by a first set of antennas of the terminal measuring reference signals; the second channel state information is determined by a second set of antennas of the terminal measuring reference signals.

In one possible design, the first channel state information is a first portion of third channel state information, the second channel state information is a second portion of the third channel state information, and the third channel state information is channel state information determined by the terminal measuring a reference signal.

In one possible design, the first channel state information and the second channel state information are carried in the same uplink control information; or, the first channel state information and the second channel state information are carried in different uplink control information.

In one possible design, the method further includes: the network equipment sends first indication information to the terminal, and the first indication information is used for indicating the terminal to feed back the first channel state information and the second channel state information.

In one possible design, the method further includes: the network equipment sends second indication information to the terminal, wherein the second indication information is used for indicating the terminal to feed back the first channel state information; and the network equipment sends second indication information to the terminal, wherein the second indication information is used for indicating the terminal to feed back second channel state information.

In one possible design, the method further includes: the network equipment receives first capability indication information sent by the terminal, wherein the first capability indication information is used for indicating whether the plurality of virtual terminals have the capability of cooperatively reporting the channel state information.

In one possible design, the method further includes: the network equipment receives second capability indication information sent by the terminal, wherein the second capability indication information is used for indicating whether each virtual terminal in the plurality of virtual terminals has the capability of utilizing all antennas of the terminal to demodulate data.

In one possible design, the method further includes: and the network equipment receives third capability indication information sent by the terminal, wherein the third capability indication information is used for indicating whether the terminal can feed back channel state information determined by each group of antenna independent measurement reference signals.

In one possible design, the method further includes: the network device receives fourth capability indication information sent by the terminal, wherein the fourth capability indication information is used for indicating whether the terminal can respectively feed back a plurality of parts in the channel state information.

In a third aspect, a terminal is provided, including: a processing unit for generating first channel state information and second channel state information; a communication unit, configured to send the first channel state information and the second channel state information to the network device.

In one possible design, the communication unit is further configured to receive first indication information, where the first indication information is used to instruct the terminal to feed back the first channel state information and the second channel state information.

In one possible design, the communication unit is further configured to receive second indication information, where the second indication information is used to indicate the terminal to feed back the first channel state information; and receiving second indication information, wherein the second indication information is used for indicating the terminal to feed back second channel state information.

In a possible design, the communication unit is further configured to send first capability indication information to the network device, where the first capability indication information is used to indicate whether the plurality of virtual terminals have a capability of cooperatively reporting the channel state information.

In one possible design, the communication unit is further configured to send, to the network device, second capability indication information, where the second capability indication information is used to indicate whether each of the plurality of virtual terminals has a capability of performing data demodulation using all antennas of the terminal.

In one possible design, the communication unit is further configured to send, to the network device, third capability indication information, where the third capability indication information is used to indicate whether the terminal is capable of feeding back channel state information determined by measuring reference signals independently for each group of antennas.

In a possible design, the communication unit is further configured to send fourth capability indication information to the network device, where the fourth capability indication information is used to indicate whether the terminal is capable of feeding back multiple parts in the channel state information respectively.

In a fourth aspect, a terminal is provided, including: and the processor is used for reading the instructions stored in the memory and implementing the feedback method of the channel state information related to any design of the first aspect according to the instructions.

In a fifth aspect, a network device is provided, which includes: a transmitting unit and a receiving unit. The sending unit is used for sending the channel state information reference signal to the terminal. And the receiving unit is used for receiving the first channel state information and the second channel state information sent by the terminal.

In a possible design, the sending unit is further configured to send first indication information to the terminal, where the first indication information is used to indicate the terminal to feed back the first channel state information and the second channel state information.

In one possible design, the sending unit is further configured to send second indication information to the terminal, where the second indication information is used to indicate the terminal to feed back the first channel state information; and the network equipment sends second indication information to the terminal, wherein the second indication information is used for indicating the terminal to feed back second channel state information.

In a possible design, the receiving unit is further configured to receive first capability indication information sent by the terminal, where the first capability indication information is used to indicate whether the plurality of virtual terminals have a capability of cooperatively reporting the channel state information.

In a possible design, the receiving unit is further configured to receive second capability indication information sent by the terminal, where the second capability indication information is used to indicate whether each of the plurality of virtual terminals has a capability of performing data demodulation by using all antennas of the terminal.

In a possible design, the receiving unit is further configured to receive third capability indication information sent by the terminal, where the third capability indication information is used to indicate whether the terminal is capable of feeding back channel state information determined by measuring reference signals independently for each group of antennas.

In a possible design, the receiving unit is further configured to receive fourth capability indication information sent by the terminal, where the fourth capability indication information is used to indicate whether the terminal is capable of feeding back multiple parts in the channel state information respectively.

In a sixth aspect, a network device is provided, comprising: and the processor is used for reading the instructions stored in the memory and realizing the feedback method of the channel state information related to any design of the second aspect according to the instructions.

In a seventh aspect, a computer-readable storage medium is provided, which stores instructions that, when executed on a computer, enable the computer to perform a feedback method of channel state information related to any one of the designs of the first aspect or the second aspect.

In an eighth aspect, there is provided a computer program product, which when run on a computer, enables the computer to perform the method for feeding back channel state information related to any one of the first or second aspects.

In a ninth aspect, a chip is provided, which includes a processor, and when the processor executes the instructions, the processor is configured to perform the feedback method of the channel state information related to any one of the designs of the first aspect or the second aspect. Alternatively, the instructions may come from memory internal to the chip or from memory external to the chip. Optionally, the chip may further include an input-output circuit.

In a tenth aspect, there is provided a communication system comprising: a terminal and a network device. Wherein, the terminal is configured to perform the feedback method of the channel state information of the first aspect. The network device is configured to perform the feedback method of the channel state information according to any one of the designs of the second aspect.

The technical effects of any one of the designs of the second aspect to the tenth aspect may refer to the technical effects of the same design manner in the corresponding method provided above, and are not described herein again.

Drawings

Fig. 1 is a communication system according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a network device and a terminal according to an embodiment of the present disclosure;

fig. 3 is a flowchart of a method for feeding back channel state information according to an embodiment of the present disclosure;

fig. 4 is a flowchart of another method for feeding back channel state information according to an embodiment of the present disclosure;

fig. 5 is a flowchart of another method for feeding back channel state information according to an embodiment of the present disclosure;

fig. 6 is a first flowchart of a capability reporting method according to an embodiment of the present application;

fig. 7 is a second flowchart of a capability reporting method according to an embodiment of the present application;

fig. 8 is a third flowchart of a capability reporting method according to an embodiment of the present application;

fig. 9 is a fourth flowchart of a capability reporting method according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a terminal according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a chip according to an embodiment of the present application.

Detailed Description

In the description of this application, "/" means "or" unless otherwise stated, for example, A/B may mean A or B. "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. Further, "at least one" means one or more, "a plurality" means two or more. The terms "first", "second", and the like do not necessarily limit the number and execution order, and the terms "first", "second", and the like do not necessarily limit the difference.

It is noted that, in the present application, words such as "exemplary" or "for example" are used to mean exemplary, illustrative, or descriptive. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

To facilitate understanding of the technical solutions of the present application, some terms related to the embodiments of the present application are briefly described below.

1. Channel State Information (CSI)

Illustratively, the channel state information may include: at least one of a Precoding Matrix Indicator (PMI), a Rank Indicator (RI), a Channel Quality Indicator (CQI), a channel state information reference signal resource indicator (CRI), and a Layer Indicator (LI).

2. Reference signal, reference signal resource set

The reference signal includes, but is not limited to, a channel state information reference signal (CSI-RS). The reference signal resource corresponds to at least one of a time domain resource, a frequency domain resource, and a code domain resource of the reference signal. The set of reference signal resources includes one or more reference signal resources.

Taking the reference signal resource as the CSI-RS resource as an example, the CSI-RS resource may be divided into a non-zero power (NZP) CSI-RS resource and a Zero Power (ZP) CSI-RS resource.

The CSI-RS resource may be configured by CSI reporting configuration (CSI reporting setting). The CSI reporting setting may configure a CSI-RS resource set for Channel Measurement (CM). Optionally, the CSI reporting setting may also configure a CSI-RS resource set for Interference Measurement (IM). Optionally, the CSI reporting setting may also configure a set of CSI-RS resources with non-zero power for interference measurement.

The CSI reporting setting may be used to indicate a time domain behavior, a bandwidth, a format corresponding to a report quality (report quality), and the like of CSI reporting. The time domain behavior includes, for example, periodicity (periodic), semi-persistence (semi-persistent), and aperiodicity (aperiodic). The terminal device may generate a CSI report based on a CSI reporting setting.

It should be noted that, in a scheme (case) in which the CSI-RS indicated in the NR is matched with CSI reporting, a case supporting a type II codebook may be as shown in table 1 below. Where P denotes periodicity, SP denotes semi-persistence, and AP denotes aperiodic.

TABLE 1

	P CSI-RS	SP CSI-RS	SP CSI-RS
				P CSI reporting	Type II codebook not supported	Type II codebook not supported	Type II codebook not supported
SP CSI reporting	Case1	Case2	Type II codebook not supported
				AP CSI reporting	Case3	Case4	Case5

Wherein case1 indicates a scheme for using the P CSI-RS in cooperation with the SP CSI reporting.

Case2 shows a scheme used by the SP CSI-RS in cooperation with the SP CSI reporting.

Case3 represents a scheme used by the P CSI-RS and AP CSI reporting.

Case4 represents a scheme used by the SP CSI-RS in cooperation with the AP CSI reporting.

Case5 represents a scheme used by the SP CSI-RS in cooperation with the AP CSI reporting.

Referring to table 1, cases 1 to 5 all support type II codebooks, and thus the technical solution provided in the embodiments of the present application is applicable to any one of cases 1 to 5.

3. Antenna, antenna group

The antenna may also be referred to as an antenna port for transceiving signals. The antennas may be classified into reception antennas and transmission antennas according to purposes. One antenna may be one physical antenna on the device or a weighted combination of multiple physical antennas on the device.

In an embodiment of the present application, the set of antennas includes a plurality of antennas.

The above is a brief introduction to technical terms of the embodiments of the present application, and the details are not described below.

The technical scheme provided by the application can be applied to various communication systems. The technical scheme provided by the application can be applied to a 5G communication system, a future evolution system or a plurality of communication fusion systems and the like, and can also be applied to the existing communication system and the like. The application scenarios of the technical solution provided in the present application may include a variety of scenarios, for example, scenarios such as machine-to-machine (M2M), macro-micro communication, enhanced mobile broadband (eMBB), ultra high reliability and ultra low latency communication (urlclc), and massive internet of things communication (mtc). These scenarios may include, but are not limited to: the communication scene between the terminals, the communication scene between the network equipment and the network equipment, the communication scene between the network equipment and the terminals and the like. The following description is given by taking the scenario in which the technical solution of the present application is applied to network equipment and terminal communication as an example.

In addition, the network architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not constitute a limitation to the technical solution provided in the embodiment of the present application, and it can be known by a person skilled in the art that the technical solution provided in the embodiment of the present application is also applicable to similar technical problems along with the evolution of the network architecture and the appearance of a new service scenario.

Fig. 1 is a schematic architecture diagram of a communication system to which the technical solution of the present application is applied. As shown in fig. 1, the communication system may include one or more network devices (only 1 shown in fig. 1) and one or more terminals connected to each network device. Fig. 1 is a schematic diagram, and does not limit the application scenarios of the technical solutions provided in the present application.

The network device may be a base station or base station controller for wireless communication, etc. For example, the base station may include various types of base stations, such as: a micro base station (also referred to as a small station), a macro base station, a relay station, an access point, and the like, which are not specifically limited in this embodiment of the present application. In this embodiment, the base station may be a base station (BTS) in a global system for mobile communication (GSM), a Code Division Multiple Access (CDMA), a base station (node B) in a Wideband Code Division Multiple Access (WCDMA), an evolved base station (eNB or e-NodeB) in a Long Term Evolution (LTE), an internet of things (IoT) or a narrowband internet of things (NB-IoT), a base station in a future 5G mobile communication network or a Public Land Mobile Network (PLMN) in a future evolution, which is not limited in this embodiment.

A network device, such as a base station, generally includes a Base Band Unit (BBU), a Radio Remote Unit (RRU), an antenna, and a feeder for connecting the RRU and the antenna. Wherein, the BBU is used for being responsible for signal modulation. The RRU is responsible for radio frequency processing. The antenna is responsible for the conversion between guided waves on the cable and space waves in the air. On one hand, the length of a feeder line between the RRU and the antenna is greatly shortened by the distributed base station, so that the signal loss can be reduced, and the cost of the feeder line can also be reduced. On the other hand, the RRU and the antenna are smaller, so that the RRU can be installed anywhere, and the network planning is more flexible. Besides RRU remote, BBUs can be centralized and placed in a Central Office (CO), and the centralized mode can greatly reduce the number of base station rooms, reduce the energy consumption of corollary equipment, particularly air conditioners, and reduce a large amount of carbon emission. In addition, after the scattered BBUs are collected and become the BBU baseband pool, unified management and scheduling can be realized, and resource allocation is more flexible. In this mode, all physical base stations evolve into virtual base stations. All virtual base stations share information of data receiving and sending, channel quality and the like of users in a BBU baseband pool, and cooperate with each other to realize joint scheduling.

In some deployments, a base station may include a Centralized Unit (CU) and a Distributed Unit (DU). The base station may further include an Active Antenna Unit (AAU). The CU realizes part of the functions of the base station and the DU realizes part of the functions of the base station. For example, the CU is responsible for processing non-real-time protocols and services, and implements functions of a Radio Resource Control (RRC) layer and a Packet Data Convergence Protocol (PDCP) layer. The DU is responsible for processing a physical layer protocol and a real-time service, and implements functions of a Radio Link Control (RLC), a Media Access Control (MAC), and a Physical (PHY) layer. The AAU implements part of the physical layer processing functions, radio frequency processing and active antenna related functions. 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 RRC layer signaling or PDCP layer signaling, can also be considered to be sent by the DU or from the DU + AAU under this architecture. It is to be understood that the network device may be a device comprising one or more of a CU node, a DU node, an AAU node. In addition, a CU may be divided into network devices in the RAN, or may also be divided into network devices in a Core Network (CN), which is not limited herein.

Terminals are used to provide voice and/or data connectivity services to users. The terminal may be referred to by different names, such as User Equipment (UE), access terminal, terminal unit, terminal station, mobile station, remote terminal, mobile device, wireless communication device, terminal agent, or terminal device. Optionally, the terminal 20 may be various handheld devices, vehicle-mounted devices, wearable devices, and computers with communication functions, which is not limited in this embodiment of the present application. For example, the handheld device may be a smartphone. The in-vehicle device may be an in-vehicle navigation system. The wearable device may be a smart band or a Virtual Reality (VR) device. The computer may be a Personal Digital Assistant (PDA) computer, a tablet computer, and a laptop computer.

Fig. 2 is a schematic diagram of hardware structures of a network device and a terminal according to an embodiment of the present application.

The terminal comprises at least one processor 101 and at least one transceiver 103. Optionally, the terminal may also include an output device 104, an input device 105, and at least one memory 102.

The processor 101, memory 102 and transceiver 103 are connected by a bus. The processor 101 may be a general-purpose Central Processing Unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more ics for controlling the execution of programs in accordance with the present disclosure. The processor 101 may also include multiple CPUs, and the processor 101 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, or processing cores that process data (e.g., computer program instructions).

Memory 102 may be a read-only memory (ROM) or other type of static storage device that may store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that may store information and instructions, but is not limited to, electrically erasable programmable read-only memory (EEPROM), compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 102 may be a separate device and is connected to the processor 101 via a bus. The memory 102 may also be integrated with the processor 101. The memory 102 is used for storing application program codes for executing the scheme of the application, and the processor 101 controls the execution. The processor 101 is configured to execute the computer program code stored in the memory 102, thereby implementing the methods provided by the embodiments of the present application.

The transceiver 103 may use any transceiver or other device for communicating with other devices or communication networks, such as ethernet, Radio Access Network (RAN), Wireless Local Area Networks (WLAN), etc. The transceiver 103 includes a transmitter Tx and a receiver Rx.

The output device 104 is in communication with the processor 101 and may display information in a variety of ways. For example, the output device 104 may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like. The input device 105 is in communication with the processor 101 and may receive user input in a variety of ways. For example, the input device 105 may be a mouse, a keyboard, a touch screen device, or a sensing device, among others.

The network device comprises at least one processor 201, at least one memory 202, at least one transceiver 203 and at least one network interface 204. The processor 201, memory 202, transceiver 203 and network interface 204 are connected by a bus. The network interface 204 is configured to connect with a core network device through a link (e.g., an S1 interface), or connect with a network interface of another network device through a wired or wireless link (e.g., an X2 interface) (not shown in the drawings), which is not specifically limited in this embodiment of the present invention. In addition, the description of the processor 201, the memory 202 and the transceiver 203 may refer to the description of the processor 101, the memory 102 and the transceiver 103 in the terminal, and will not be repeated herein.

The technical solutions provided by the embodiments of the present application are specifically described below with reference to the drawings of the specification.

As shown in fig. 3, a method for feeding back channel state information provided in an embodiment of the present application includes the following steps:

s101, the network equipment sends a reference signal to the terminal.

Optionally, the reference signal may be a CSI-RS.

S102, the terminal measures the reference signal and generates first channel state information and second channel state information.

In an embodiment of the present application, the first channel state information may include a first precoding matrix indication, and the second channel state information may include a second precoding matrix indication.

Specifically, step S102 may adopt any one of the following implementation manners:

in the first implementation manner, the terminal measures the reference signal by using the first group of antennas, determines the first channel matrix, and determines the first channel state information according to the first channel matrix and the type II codebook. The terminal measures the reference signals by the second group of antennas, determines a second channel matrix, and determines second channel state information according to the second channel matrix and the type II codebook.

For example, the CSI ports configured by the network device are T. The terminal has receive antennas Rx0, Rx1, Rx2, and Rx 3. Wherein Rx0 and Rx1 belong to the first group of antennas and Rx2 and Rx3 belong to the second group of antennas. The terminal measures the CSI by Rx0 and Rx1, and can determine a channel matrix H0 with the dimension of 2 x T; thereafter, the terminal can determine first channel state information based on the type II codebook, which includes the PMI0, according to the channel matrix H0. The terminal measures the CSI by Rx2 and Rx3, and can determine a channel matrix H1 with the dimension of 2 x T; thereafter, the terminal can determine second channel state information based on the type II codebook, which includes the PMI1, according to the channel matrix H1.

And in the second implementation mode, the terminal measures the reference signals by using all the antennas to determine the channel matrix. And, the terminal determines a precoding matrix according to the channel matrix. Then, the terminal quantizes a first part (for example, a first column and a second column in the precoding matrix) in the precoding matrix based on the type II codebook, determines a first precoding matrix indicator, and further determines first channel state information. The terminal quantizes a second portion (e.g., a second column and a third column of the precoding matrix) of the precoding matrix based on the type II codebook, determines a second precoding matrix indicator, and further determines second channel state information.

For example, the CSI ports configured by the network device are T. The terminal has receive antennas Rx0, Rx1, Rx2, and Rx 3. The terminal measures the CSI with Rx0, Rx1, Rx2 and Rx3 to determine a channel matrix H with dimension 4 × T. After that, the terminal determines a precoding matrix P according to the channel matrix H, where P is [ P0P1P2P3], P0 represents the first column element in the precoding matrix, P1 represents the second column element in the precoding matrix, P2 represents the third column element in the precoding matrix, and P3 represents the fourth column element in the precoding matrix. The terminal may quantize [ p0p1] based on the type II codebook, determining first channel state information including PMI 0. The terminal may quantize [ p2p3] based on the type II codebook, and determine second channel state information including PMI 1.

The third implementation manner is that the terminal is configured with a plurality of virtual terminals, the plurality of virtual terminals include a first virtual terminal and a second virtual terminal, the first virtual terminal is provided with a first group of antennas, and the second virtual terminal is provided with a second group of antennas. In this case, the first virtual terminal may measure reference signals using the first set of antennas, determine a first channel matrix, and determine first channel state information according to the first channel matrix in combination with the type II codebook. The second virtual terminal may measure reference signals using a second set of antennas, determine a second channel matrix, and determine second channel state information according to the second channel matrix in combination with the type II codebook.

For example, the CSI ports configured by the network device are T. The terminal is configured with a first virtual terminal and a second virtual terminal. The first virtual terminal has receive antennas Rx0 and Rx 1. The second virtual terminal has receive antennas Rx2 and Rx 3. The first virtual terminal measures CSI with Rx0 and Rx1, and may determine a channel matrix H0 with a dimension of 2 × T; thereafter, the first virtual terminal can determine first channel state information based on the type II codebook, which includes the PMI0, according to the channel matrix H0. The second virtual terminal measures CSI with Rx2 and Rx3, and can determine a channel matrix H1 with a dimension of 2 × T; thereafter, the second virtual terminal can determine second channel state information based on the type II codebook, which includes the PMI1, according to the channel matrix H1.

The terminal is configured with a plurality of virtual terminals, the plurality of virtual terminals include a first virtual terminal and a second virtual terminal, the first virtual terminal has a first group of antennas, and the second virtual terminal has a second group of antennas. In this case, the first virtual terminal and the second virtual terminal cooperatively use the first group of antennas and the second group of antennas, measure the reference signal, determine the channel matrix, and then determine the precoding matrix according to the channel matrix. Then, the first virtual terminal quantizes a first part (for example, a first column and a second column in the precoding matrix) in the precoding matrix, determines a first precoding matrix indicator, and further determines first channel state information. The second virtual terminal quantizes a second portion of the precoding matrix (e.g., a second column and a third column of the precoding matrix) based on the type II codebook, determines a second precoding matrix indicator, and further determines second channel state information.

For example, the CSI ports configured by the network device are T. The terminal is configured with a first virtual terminal and a second virtual terminal. The first virtual terminal has receive antennas Rx0 and Rx 1. The second virtual terminal has receive antennas Rx2 and Rx 3. The first virtual terminal and the second virtual terminal cooperatively measure the CSI by using Rx0, Rx1, Rx2 and Rx3, determine a channel matrix H with the dimension of 4 x T, and further determine a precoding matrix P according to the channel matrix H, wherein P is [ P0P1P2P3 ]. The first virtual terminal may quantize [ p0p1] based on the type II codebook, determining first channel state information containing PMI 0. The second virtual terminal may quantize [ p2p3] based on the type II codebook, determining second channel state information containing PMI 1.

It is to be understood that for the first and second implementations, the first channel state information is determined by a first set of antenna measurement reference signals of the terminal; the second channel state is determined by a second set of antennas of the terminal measuring reference signals. For the second and fourth implementations, the first channel state information is a first portion of third channel state information, the second channel state information is a second portion of the third channel state information, and the third channel state information is channel state information determined by the terminal measuring a reference signal.

S103, the terminal sends the first channel state information and the second channel state information to the network equipment, so that the network equipment receives the first channel state information and the second channel state information sent by the terminal.

The sending order of the first channel state information and the second channel state information is not limited in the embodiment of the application, for example, the terminal may send the first channel state information to the network device first, and then send the second channel state information; alternatively, the terminal may simultaneously transmit the first channel state information and the second channel state information to the network device.

Optionally, the first channel state information and the second channel state information may be carried in the same uplink control information.

Alternatively, the first channel state information and the second channel state information may be respectively carried in different uplink control information, for example: the first channel state information is carried in the first uplink control information, and the second channel state information is carried in the second uplink control information.

In addition, if the terminal is configured with a first virtual terminal and a second virtual terminal, and the first channel state information corresponds to the first virtual terminal and the second channel state information corresponds to the second virtual terminal, step S103 may adopt any one of the following implementation manners:

in a first implementation mode, a first virtual terminal sends first channel state information to network equipment; and the second virtual terminal sends the second channel state information to the network equipment.

In the second implementation manner, the first virtual terminal sends the first channel state information and the second channel state information to the network device. Or the second virtual terminal sends the first channel state information and the second channel state information to the network equipment.

S104, the network equipment determines a precoding matrix according to the first channel state information and the second channel state information.

Corresponding to the first implementation manner of step S102, the first implementation manner of step S104 is: and the network equipment determines a corresponding first precoding matrix according to the first precoding matrix indication. And the network equipment determines a corresponding second precoding matrix according to the second precoding matrix indication. The network device performs a Block-Diagonalization (BD) operation or a Zero Forcing (ZF) operation on the first precoding matrix and the second precoding matrix, and determines a third precoding matrix. In this way, the network device may perform precoding on at least one codeword of the terminal according to the third precoding matrix, so as to implement space division transmission on the multi-stream data of the terminal on the same time-frequency resource. The terminal can utilize all antennas to demodulate the data stream transmitted by the network device as a whole.

Corresponding to the second implementation manner of step S102, the second implementation manner of step S104 is: the network equipment determines a first precoding matrix according to the first precoding matrix indication; the network equipment determines a second precoding matrix according to the second precoding matrix indication; then, the network device combines the first precoding matrix and the second precoding matrix into a fourth precoding matrix. For example, the first precoding matrix is [ p0p1], the second precoding matrix is [ p2p3], and the fourth precoding matrix is [ p0p1p2p3 ]. In this way, the network device may perform precoding on at least one codeword of the terminal according to the third precoding matrix, so as to implement space division transmission on the multi-stream data of the terminal on the same time-frequency resource. The terminal can utilize all antennas to demodulate the data stream transmitted by the network device as a whole.

Corresponding to the third implementation manner of step S102, the third implementation manner of step S104 is: and the network equipment determines a corresponding first precoding matrix according to the first precoding matrix indication. And the network equipment determines a corresponding second precoding matrix according to the second precoding matrix indication. The network equipment performs block diagonalization operation or zero forcing operation on the first precoding matrix and the second precoding matrix to determine a third precoding matrix. The network device may perform precoding on at least one codeword of the first virtual terminal by using the third precoding matrix, and generate a corresponding data stream. The first virtual terminal demodulates the data stream sent by the network device to the first virtual terminal by using the first group of antennas. The network device may perform precoding on at least one codeword of the second virtual terminal by using the third precoding matrix, and generate a corresponding data stream. And the second virtual terminal demodulates the data stream sent to the second virtual terminal by the network equipment by using the second group of antennas.

Corresponding to the fourth implementation manner of step S102, the fourth implementation manner of step S104 is: the network equipment determines a first precoding matrix according to the first precoding matrix indication; the network equipment determines a second precoding matrix according to the second precoding matrix indication; then, the network device combines the first precoding matrix and the second precoding matrix into a fourth precoding matrix. In this way, the network device may precode at least one codeword of the first virtual terminal and at least one codeword of the second virtual terminal according to the fourth precoding matrix, so as to implement space division transmission of multi-stream data of the first virtual terminal and the second virtual terminal on the same time-frequency resource. The first virtual terminal may demodulate a data stream transmitted by the network device using the first set of antennas and the second set of antennas. The second virtual terminal may demodulate a data stream transmitted by the network device using the first set of antennas and the second set of antennas.

Based on the technical solution shown in fig. 3, compared with the prior art in which the terminal measurement reference signal only generates one piece of channel state information, in the technical solution of the embodiment of the present application, the terminal measurement reference signal may generate the first channel state information and the second channel state information. The rank of the first channel state information and the rank of the second channel state information conform to the specification of the type II codebook (that is, the rank is 2 or less). In this way, the terminal sends the first channel state information and the second channel state information to the network device, and the feedback of the channel state information higher than rank2 can be indirectly achieved.

Optionally, as shown in fig. 4, before step S101, the method further includes step S201.

S201, the network equipment sends first indication information to the terminal, so that the terminal receives the first indication information sent by the network equipment.

The first indication information is used for indicating the terminal to feed back first channel state information and second channel state information. Or, the first indication information is used to indicate a mode in which the terminal enables partial feedback of channel state information. It can be understood that the mode of feeding back the channel state information partially is used to allow the terminal to feed back a plurality of portions of the channel state information, respectively.

Optionally, the first indication information may further include first configuration information and second configuration information.

The first configuration information is used to indicate at least one of the following information: specific contents (such as PMI, CQI, and the like) included in the first channel state information, and a reporting type of the first channel state information. The reporting types supported by the NR include: periodic CSI reporting, semi-persistent CSI reporting, and aperiodic CSI reporting.

It can be understood that, when the first configuration information is used to indicate that the reporting type of the first channel state information is periodic CSI reporting or semi-persistent CSI reporting, the first configuration information is also used to indicate a reporting period and an offset value of the first channel state information. The offset value is used for indicating a difference value between a reporting time slot of the first channel state information and a time slot of the reference signal.

The second configuration information is used for indicating at least one of the following information: specific contents (such as PMI, CQI, and the like) included in the second channel state information, and a reporting type of the second channel state information. It can be understood that, when the second configuration information is used to indicate that the reporting type of the second channel state information is periodic CSI reporting or semi-persistent CSI reporting, the second configuration information is also used to indicate a reporting period and an offset value of the second channel state information. The offset value is used for indicating a difference value between a reporting time slot of the second channel state information and a time slot of the reference signal.

Based on the technical solution shown in fig. 4, the network device sends the first indication information to the terminal to trigger the terminal to execute a feedback scheme of the channel state information of the high rank.

Optionally, as shown in fig. 5, before step S101, the method further includes: steps S301-S302.

S301, the network equipment sends second indication information to the terminal, so that the terminal receives the second indication information sent by the network equipment.

Wherein the second indication information is used for indicating the terminal to feed back the first channel state information.

Optionally, the second indication information further includes first configuration information. The description of the first configuration information may refer to the embodiment shown in fig. 4, and is not repeated herein.

S302, the network device sends third indication information to the terminal, so that the terminal receives the third indication information sent by the network device.

Wherein the third indication information is used for indicating the terminal to feed back second channel state information.

Optionally, the third indication information further includes second configuration information. The description of the second configuration information may refer to the embodiment shown in fig. 4, and is not repeated here.

Based on the technical solution shown in fig. 5, the network device may enable the terminal to perform a feedback scheme of the channel state information of the high rank by sending the second indication information and the third indication information to the terminal.

As shown in fig. 6, a capability reporting method provided in this embodiment of the present application includes the following steps:

s401, the terminal generates first capability information.

The first capability information is used for indicating whether the plurality of virtual terminals have the capability of cooperatively reporting the channel state information. Or, the first capability information is used to indicate whether one of the plurality of virtual terminals has a capability of reporting channel state information corresponding to all the virtual terminals.

Alternatively, the first capability information may be implemented in one or more bits. For example, the first capability information is implemented by 1 bit, where "0" indicates that the first capability information is used to indicate that the plurality of virtual terminals have the capability of cooperatively reporting the channel state information, and "1" indicates that the first capability information is used to indicate that the plurality of virtual terminals do not have the capability of cooperatively reporting the channel state information.

It can be understood that, for the terminal, in a case that the terminal is configured with a plurality of virtual terminals, if the plurality of virtual terminals have the capability of cooperatively reporting the channel state information, the first channel state information and the second channel state information may be reported to the network device by the first virtual terminal or the second virtual terminal in a unified manner.

S402, the terminal sends the first capability information to the network equipment, so that the network equipment receives the first capability information sent by the terminal.

Optionally, the first capability information may be carried in RRC signaling, MAC-CE signaling, or UCI.

S403, the network device determines whether the multiple virtual terminals configured by the terminal have the capability of cooperatively reporting the channel state information according to the first capability information.

It can be understood that, for the network device, when the first capability information indicates that a plurality of virtual terminals configured by the terminal have the capability of cooperatively reporting channel state information, if the first virtual terminal (or the second virtual terminal) sends two pieces of channel state information to the network device, the network device may determine that one piece of channel state information corresponds to the first virtual terminal and the other piece of channel state information corresponds to the second virtual terminal.

Based on the technical scheme shown in fig. 6, the terminal sends the first capability information to the network device, so that the network device learns whether a plurality of virtual terminals configured by the terminal have the capability of cooperatively reporting channel state information.

As shown in fig. 7, a capability reporting method provided in this embodiment of the present application includes the following steps:

s501, the terminal generates second capability information.

The second capability information is used for indicating whether the virtual terminal has the capability of data demodulation by using all antennas of the terminal.

Alternatively, the second capability information may be implemented in one or more bits. For example, the second capability information is implemented in 1 bit, and "0" indicates that the second capability information indicates that the virtual terminal does not have a capability of data demodulation using all antennas of the terminal; "1" indicates that the second capability information indicates that the virtual terminal has a capability of data demodulation using all antennas of the terminal.

It should be noted that, for the terminal, if the virtual terminal configured by the terminal has the capability of demodulating data by using all antennas of the terminal, the terminal may adopt the fourth implementation manner of step S102 when executing step S102. If the virtual terminal configured by the terminal does not have the capability of demodulating data by using all the antennas of the terminal, the terminal cannot adopt the fourth implementation manner of the step S102 when the terminal executes the step S102.

S502, the terminal sends the second capability information to the network equipment, so that the network equipment receives the second capability information sent by the terminal.

Optionally, the second capability information may be carried in RRC signaling, MAC-CE signaling, or UCI.

S503, the network device determines whether the virtual terminal configured by the terminal has the capability of demodulating data by using all antennas of the terminal according to the second capability information.

It should be noted that, for the network device, if the second capability information indicates that the virtual terminal configured by the terminal has the capability of demodulating data by using all antennas of the terminal, the network device may adopt the fourth implementation manner of step S104 when executing step S104. If the second capability indication information indicates that the virtual terminal configured by the terminal does not have the capability of performing data demodulation by using all antennas of the terminal, the network device cannot adopt the fourth implementation manner of the step S104 when the network device executes the step S104.

Based on the technical scheme shown in fig. 7, the terminal sends the second capability information to the network device, so that the network device learns whether the virtual terminal configured by the terminal has the capability of performing data demodulation by using all antennas of the terminal, so that the network device can adopt a proper implementation manner when determining the precoding matrix.

As shown in fig. 8, a capability reporting method provided in this embodiment of the present application includes the following steps:

s601, the terminal generates third capability information.

Wherein the third capability information is used to indicate whether the terminal can feed back channel state information determined by each group of antenna independent measurement reference signals. In other words, the third capability information is used to indicate whether the terminal can independently measure the reference signal using each group of antennas.

Alternatively, the third capability information may be implemented in one or more bits. For example, the third capability information is implemented in 1 bit, and "0" indicates that the third capability information is used to indicate that the terminal cannot feed back channel state information determined by each group of antenna independent measurement reference signals; "1" indicates that the first capability information indicates that the terminal can feed back channel state information determined by measuring reference signals independently for each group of antennas.

It should be noted that, for the terminal, if the terminal can feed back the channel state information determined by measuring the reference signal independently for each group of antennas, the terminal may adopt the first implementation manner of step S102 when performing step S102. If the terminal cannot feed back the channel state information determined by measuring the reference signal independently for each group of antennas, the terminal cannot adopt the first implementation manner of step S102 when executing step S102.

S602, the terminal sends the third capability information to the network device, so that the network device receives the third capability information sent by the terminal.

The third capability information may be carried in RRC signaling, MAC-CE signaling, or UCI.

S603, the network equipment determines whether the terminal can feed back the channel state information determined by the independent measurement reference signal of each group of antennas according to the third capability information.

It is to be understood that, for the network device, if the third capability information is used to indicate that the terminal can feed back channel state information determined by measuring reference signals independently for each group of antennas, the network device may adopt the first implementation manner of step S104 when performing step S104. If the third capability information is used to indicate that the terminal cannot feed back the channel state information determined by the independent measurement reference signal for each group of antennas, the network device cannot adopt the first implementation manner of step S104 when the network device executes step S104.

Based on the technical scheme shown in fig. 8, the terminal sends the third capability information to the network device, so that the network device knows whether the terminal can feed back channel state information determined by the independent measurement reference signal of each group of antennas.

As shown in fig. 9, a capability reporting method provided in this embodiment of the present application includes the following steps:

s701, the terminal generates fourth capability information.

Wherein the fourth capability information is used to indicate whether the terminal can feed back a plurality of parts in the channel state information respectively.

Alternatively, the fourth capability information may be implemented in one or more bits. For example, the fourth capability information is implemented in 1 bit, and "0" indicates that the fourth capability information is used to indicate that the terminal cannot feed back a plurality of parts in the channel state information, respectively; "1" indicates that the first capability information indicates that the terminal can feed back a plurality of parts in the channel state information, respectively.

Note that, for the terminal, if the terminal can feed back a plurality of parts in the channel state information, the terminal may adopt the second implementation manner of step S102 when executing step S102. If the terminal cannot separately feed back a plurality of parts in the channel state information, the terminal cannot adopt the second implementation manner of step S102 when executing step S102.

S702, the terminal sends fourth capability information to the network equipment, so that the network equipment receives the fourth capability information sent by the terminal.

The fourth capability information may be carried in RRC signaling, MAC-CE signaling, or UCI.

S703, the network device determines whether the terminal can respectively feed back multiple parts of the channel state information according to the fourth capability information.

It should be noted that, for the network device, if the fourth capability information indicates that the terminal can feed back a plurality of parts in the channel state information respectively, the network device may adopt the second implementation manner of step S104 when executing step S104. If the fourth capability information indicates that the terminal cannot feed back the plurality of parts in the new state information respectively, the network device cannot adopt the second implementation manner of step S104 when the network device executes step S104.

Based on the technical solution shown in fig. 9, the terminal sends the fourth capability information to the network device, so that the network device knows whether the terminal can respectively feed back multiple parts in the channel state information. Thus, the network device can adopt a suitable implementation manner when determining the precoding matrix.

The above-mentioned scheme provided by the embodiment of the present application is mainly introduced from the perspective of interaction between each network element. It is understood that each network element, such as the network device and the terminal, includes a hardware structure or a software module or a combination of both for performing each function in order to realize the functions. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. 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.

In the embodiment of the present application, the network device and the terminal may be divided into the functional modules according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation. The following description will be given by taking the case of dividing each function module corresponding to each function:

fig. 10 is a schematic structural diagram of a terminal according to an embodiment of the present application. As shown in fig. 10, the terminal includes a communication module 301 and a processing module 302. Among them, the communication module 301 is used to support the terminal to execute steps S101 and S103 in fig. 3, step S201 in fig. 4, steps S301 and S302 in fig. 5, step S402 in fig. 6, step S502 in fig. 7, step S602 in fig. 8, step S702 in fig. 9, and/or other processes for supporting the technical solutions described herein. The processing module 302 is configured to support the terminal to perform step S102 in fig. 3, step S401 in fig. 6, step S501 in fig. 7, step S601 in fig. 8, step S701 in fig. 9, and/or other processes for supporting the technical solutions described herein.

As an example, in conjunction with the terminal shown in fig. 5, the communication module 301 in fig. 10 may be implemented by the transceiver 103 in fig. 5, and the processing module 302 in fig. 10 may be implemented by the processor 101 in fig. 5, which is not limited in this embodiment.

Fig. 11 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in fig. 11, the network device includes a transmitting module 401, a processing module 402, and a receiving module 403. The sending module 401 is configured to support the network device to perform step S101 in fig. 3, step S201 in fig. 4, and steps S301 and S302 in fig. 5, and/or to support other processes of the technical solution described herein. The processing module 402 is configured to support the network device to perform step S104 in fig. 3, step S403 in fig. 6, step S503 in fig. 7, step S603 in fig. 8, step S703 in fig. 9, and/or other processes for supporting the technical solutions described herein. The receiving module 403 is configured to support the network device to perform step S103 in fig. 3, step S402 in fig. 6, step S502 in fig. 7, step S602 in fig. 8, step S702 in fig. 9, and/or other processes for supporting the technical solutions described herein.

It is understood that the transmitting module 401 and the receiving module 403 may be integrated into a communication module, which may have the functions of the transmitting module 401 and the receiving module 403.

As an example, in conjunction with the network device shown in fig. 5, the sending module 401 and the receiving module 403 in fig. 11 may be implemented by the transceiver 203 in fig. 5, and the processing module 402 in fig. 11 may be implemented by the processor 201 in fig. 5, which is not limited in this embodiment.

The embodiment of the application also provides a computer readable storage medium, wherein the computer readable storage medium stores computer instructions; the computer readable storage medium, when run on a communication device, causes the communication device to perform the method as shown in fig. 6-9. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or can comprise one or more data storage devices, such as a server, a data center, etc., that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium, or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

Embodiments of the present application also provide a computer program product containing computer instructions, which when run on a communication apparatus, enables the communication apparatus to perform the methods shown in fig. 6 to 9.

Fig. 12 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip shown in fig. 12 may be a general-purpose processor or may be a dedicated processor. The chip includes a processor 501. The processor 501 is configured to support the communication device to execute the technical solutions shown in fig. 6 to 9.

Optionally, the chip further includes a transceiver pin 502, where the transceiver pin 502 is used for receiving the control of the processor 501, and is used to support the communication device to execute the technical solutions shown in fig. 6 to 9.

Optionally, the chip shown in fig. 12 may further include: a storage medium 503.

It should be noted that the chip shown in fig. 12 can be implemented by using the following circuits or devices: one or more Field Programmable Gate Arrays (FPGAs), Programmable Logic Devices (PLDs), controllers, state machines, gate logic, discrete hardware components, any other suitable circuitry, or any combination of circuitry capable of performing the various functions described throughout this application.

The terminal, the network device, the computer storage medium, the computer program product, and the chip provided in the embodiments of the present application are all configured to execute the method provided above, so that the beneficial effects achieved by the terminal, the network device, the computer storage medium, the computer program product, and the chip can refer to the beneficial effects corresponding to the method provided above, and are not described herein again.

Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method for feeding back channel state information, the method comprising:

the terminal generates first channel state information and second channel state information;

the terminal sends the first channel state information and the second channel state information to network equipment;

the terminal sends first capability indication information to the network equipment, wherein the first capability indication information is used for indicating whether a plurality of virtual terminals in the terminal have the capability of cooperatively reporting channel state information or not; alternatively, the first and second electrodes may be,

and the terminal sends second capability indication information to the network equipment, wherein the second capability indication information is used for indicating whether each virtual terminal in the plurality of virtual terminals has the capability of utilizing all antennas of the terminal to demodulate data.

2. The method for feeding back channel state information according to claim 1,

the first channel state information is determined by a first set of antenna measurement reference signals of the terminal;

the second channel state information is determined by a second set of antenna measurement reference signals of the terminal.

3. The method for feeding back channel state information according to claim 1,

the first channel state information is a first part of third channel state information, the second channel state information is a second part of the third channel state information, and the third channel state information is channel state information determined by the terminal measuring a reference signal.

4. The method for feeding back channel state information according to any one of claims 1 to 3, wherein the method further comprises:

the terminal receives first indication information, and the first indication information is used for indicating the terminal to feed back the first channel state information and the second channel state information.

5. The method for feeding back channel state information according to any one of claims 1 to 3, wherein the method further comprises:

the terminal receives second indication information, wherein the second indication information is used for indicating the terminal to feed back the first channel state information;

and the terminal receives third indication information, wherein the third indication information is used for indicating the terminal to feed back the second channel state information.

6. The method according to any of claims 1 to 3, wherein if the terminal is configured with a first virtual terminal and a second virtual terminal, the first channel state information corresponds to the first virtual terminal, and the second channel state information corresponds to the second virtual terminal.

7. A terminal, comprising:

a processing unit for generating first channel state information and second channel state information;

a communication unit, configured to send the first channel state information and the second channel state information to a network device;

the communication unit is further configured to send first capability indication information to the network device, where the first capability indication information is used to indicate whether multiple virtual terminals in the terminals have a capability of cooperatively reporting channel state information; alternatively, the first and second electrodes may be,

the communication unit is further configured to send second capability indication information to the network device, where the second capability indication information is used to indicate whether each of the plurality of virtual terminals has a capability of performing data demodulation by using all antennas of the terminal.

8. The terminal of claim 7,

9. The terminal of claim 7,

10. The terminal according to any of claims 7 to 9,

the communication unit is further configured to receive first indication information, where the first indication information is used to indicate the terminal to feed back the first channel state information and the second channel state information.

11. The terminal according to any of claims 7 to 9,

the communication unit is further configured to receive second indication information, where the second indication information is used to indicate the terminal to feed back the first channel state information; and receiving third indication information, wherein the third indication information is used for indicating the terminal to feed back the second channel state information.

12. The terminal according to any of claims 7 to 9, wherein if the terminal is configured with a first virtual terminal and a second virtual terminal, the first channel state information corresponds to the first virtual terminal, and the second channel state information corresponds to the second virtual terminal.

13. A computer-readable storage medium storing instructions which, when executed on a computer, cause the computer to perform the feedback method of channel state information according to any one of claims 1 to 6.

14. A chip comprising a processor, wherein the processor is configured to execute the channel state information feedback method according to any one of claims 1 to 6 when the processor executes the instructions.