CN112020092B - Channel information acquisition method and device - Google Patents

Channel information acquisition method and device Download PDF

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CN112020092B
CN112020092B CN201910472684.8A CN201910472684A CN112020092B CN 112020092 B CN112020092 B CN 112020092B CN 201910472684 A CN201910472684 A CN 201910472684A CN 112020092 B CN112020092 B CN 112020092B
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channel
information
difference information
difference
network device
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CN112020092A (en
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唐小勇
樊波
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network

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  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the application discloses a channel information acquisition method and a channel information acquisition device, which are used for acquiring channel information between a terminal and network equipment. The method comprises the following steps: the method comprises the steps that the network equipment acquires channel information of N first channels, wherein the first channels are uplink channels between a first antenna port of the terminal equipment and an nth antenna port of the network equipment; n is 1, 2, … N, where N is the number of antenna ports of the network device; the network equipment receives Q pieces of difference information sent by the terminal equipment; wherein each difference information in the Q difference information is used to indicate a difference information between channel information of the second channel and channel information of the first channel, and the second channel is: an uplink channel between a second antenna port of the terminal device and an nth antenna port of the network device; q is a positive integer; and the network equipment determines uplink channel information between the terminal equipment and the network equipment according to the channel information of the N first channels and the Q difference information.

Description

Channel information acquisition method and device
Technical Field
The embodiment of the application relates to the technical field of communication, in particular to a channel information acquisition method and device.
Background
In a mobile communication system, a network device needs to acquire channel information between a terminal device and the network device, and schedules resources according to the acquired channel information to perform uplink/downlink data transmission. The channel information may be divided into uplink channel information and downlink channel information. In a Time Division Duplex (TDD) system, uplink channel information and downlink channel information may be obtained by measuring Sounding Reference Signals (SRS), such as: the terminal device can send the SRS to the network device through all the antenna ports thereof, and the network device receives the SRS through all the antenna ports thereof and measures uplink channel information and downlink channel information between each antenna port of the network device and each antenna port of the terminal device.
As shown in fig. 1, assuming that the number of antenna ports of the network device and the terminal device are both 2, the channel between the network device and the terminal device is a 2X2 matrix, including an uplink channel matrix H shown in the following formula 1ULAnd a downlink channel matrix HDL. The terminal device may send the SRS to the network device at antenna port 1 and antenna port 2 of the terminal, and the network device may receive the SRS at antenna port 1 and antenna port 2, and obtain H according to the received SRS measurement11、H12、H21、H22And then according to H11、H12、H21、H22And obtaining uplink channel information and downlink channel information.
Figure BDA0002081221450000011
However, in actual communication, due to limited capability of the terminal device, the terminal device cannot transmit the SRS to the network device through all antenna ports, and only a single antenna port is used for transmitting the SRS. As shown in fig. 1, the terminal device only uses the antenna port 1 of the terminal device to transmit the SRS to the network device, and after receiving the SRS at the antenna 1 and the antenna 2 of the network device, the network device can only obtain H according to the received SRS measurement11And H21That is, partial channel information is obtained, and complete channel information cannot be obtained by measuring the SRS. The network device cannot perform efficient uplink and downlink resource scheduling based on partial channel information, which results in the decrease of uplink and downlink data transmission performance.
Disclosure of Invention
The embodiment of the application provides a method and a device for acquiring channel information, which are used for solving the problem that network equipment cannot acquire complete channel information because the conventional terminal equipment cannot transmit SRS through all antennas.
In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:
in a first aspect, an embodiment of the present application provides a channel information obtaining method, where the method includes: the method comprises the steps that the network equipment obtains channel information of N first channels; the network equipment receives the Q pieces of difference information sent by the terminal equipment, and determines uplink channel information between the terminal equipment and the network equipment according to the channel information of the N first channels and the Q pieces of difference information; each difference information in the Q pieces of difference information is used to indicate difference information of channel information of a second channel and channel information of a first channel, and the first channel is an uplink channel between a first antenna port of the terminal device and an nth antenna port of the network device; n is 1, 2, … N, where N is the number of antenna ports of the network device, and the second channel is an uplink channel between the second antenna port of the terminal device and the nth antenna port of the network device.
Based on the method in the first aspect, the network device may obtain channel information of a channel between the antenna port included in the network device and one antenna port of the terminal device, obtain difference information from the terminal device, where the difference information is difference information between channel information of a channel between another antenna port of the terminal device and the antenna port of the network device and channel information already obtained by the network device, and obtain channel information of all channels between the network device and the terminal device according to the obtained channel information and difference information of a part of channels. Therefore, the network device can obtain complete channel information, and further transmit data according to the complete channel information, so as to improve data transmission performance, and meanwhile, in the method provided by the first aspect, the terminal device only needs to report difference information between the channel information of the channel, so that the overhead of reporting the measurement result by the terminal device and the signaling overhead are reduced.
In one possible design, Q is a positive integer less than or equal to (M-1) × N, and M is the number of antenna ports of the terminal device.
In a possible design, with reference to the first aspect, the difference information includes at least one of the following information: amplitude difference information of the channel, energy difference information of the channel, phase difference information of the channel, or delay difference information of the channel. Based on the possible design, the difference between the first channel and the second channel can be reflected from one or more aspects of the amplitude of the channel, the energy of the channel, the phase of the channel, the time delay and the like, and the method is simple and easy to implement.
In one possible design, with reference to the first aspect or the possible design of the first aspect, the first channel includes K first channel components, the second channel includes K corresponding second channel components, and K is a positive integer; the difference information includes: indication information of K pieces of component difference information, each of the K pieces of component difference information including: and difference information between the channel information of the first channel component and the channel information of the corresponding second channel component.
The indication information of the K pieces of component difference information includes the K pieces of component difference information or indication information obtained according to the K pieces of component difference information, which is not limited.
Based on the possible design, in the case that the channel includes a plurality of channel components, the difference between the channel information of the channel is determined according to the difference between the channel information of the plurality of channel components of the channel, that is, the difference between the channel information of the channel is determined with the channel components as the granularity, and the determination accuracy of the difference information is improved.
In yet another possible design, in combination with the first aspect or the possible design of the first aspect, the difference information includes: and the difference information of the channel on one or more frequency points. Based on the possible design, the difference between the channels is determined according to the difference of the channels on one or more frequency points, namely the difference between the channels is determined by taking the frequency points as the granularity, and the determination precision of the difference information is improved.
In another possible design, in combination with the first aspect or the possible design of the first aspect, the Q pieces of difference information include: first difference information and second difference information; first difference information indicating difference information of channel information between the first second channel and the first channel; second difference information indicating difference information of channel information between the first second channel and the second channel. Based on the possible design, the difference information can be reported in a differential mode, and the reporting overhead is reduced.
In another possible design, with reference to the first aspect or the possible design of the first aspect, the acquiring, by the network device, channel information of each of the N first channels includes: the network equipment receives the SRS sent by the terminal equipment through the first antenna port through an nth antenna port of the network equipment; and the network equipment obtains the channel information of the channel between the first antenna port of the terminal equipment and the nth antenna port of the network equipment according to the received SRS. Based on the possible design, the channel information of the channel can be obtained according to the SRS measurement, and the method is simple and easy to implement.
In yet another possible design, in combination with the first aspect or the possible design of the first aspect, the network device sends the indication information to the terminal device; the indication information is used for indicating the terminal equipment to report Q pieces of difference information. Based on the possible design, the network equipment sends the indication information to the terminal equipment, and the indication terminal equipment reports the difference information between the channel information, so that the method is simple and easy to implement.
In a second aspect, the present application provides a communication apparatus, which may be a network device or a chip or a system on a chip in a network device, and may also be a functional module in a network device for implementing the method according to the first aspect or any possible design of the first aspect. The communication means may implement the functions performed by the network device in each of the above aspects or possible designs, which functions may be implemented by hardware executing the corresponding software. The hardware or software comprises one or more modules corresponding to the functions. Such as: the communication apparatus may include: a receiving unit, a processing unit and a sending unit;
the processing unit is used for acquiring channel information of the N first channels; the first channel is an uplink channel between a first antenna port of the terminal equipment and an nth antenna port of the network equipment; n is 1, 2, … N, where N is the number of antenna ports of the network device;
the receiving unit is used for receiving Q pieces of difference information sent by the terminal equipment; wherein each difference information in the Q difference information is used to indicate a difference information between channel information of the second channel and channel information of the first channel, and the second channel is: an uplink channel between a second antenna port of the terminal device and an nth antenna port of the network device; q is a positive integer;
and the processing unit is further configured to determine uplink channel information between the terminal device and the network device according to the channel information of the N first channels and the Q difference information.
The specific implementation manner of the communication apparatus may refer to a behavior function of a network device in a channel information acquisition method provided by any one of the first aspect and the first possible design, and the first aspect or any one of the first possible design methods may be implemented by a receiving unit, a processing unit, and a sending unit included in the communication apparatus, which is not described herein again. Thus, the communication device provided may achieve the same advantageous effects as the first aspect or any one of the possible designs of the first aspect.
In a third aspect, a communication apparatus is provided, which may be a network device or a chip or a system on chip in the network device. The communication apparatus may implement the functions performed by the network device in the above aspects or possible designs, and the functions may be implemented by hardware, such as: in one possible design, the communication device may include: the processor is used for acquiring channel information of the N first channels; the first channel is an uplink channel between a first antenna port of the terminal equipment and an nth antenna port of the network equipment; n is 1, 2, … N, where N is the number of antenna ports of the network device; receiving Q pieces of difference information sent by the terminal equipment through the transceiver, and determining uplink channel information between the terminal equipment and the network equipment according to the channel information of the N first channels and the Q pieces of difference information; wherein each difference information in the Q difference information is used to indicate a difference information between channel information of the second channel and channel information of the first channel, and the second channel is: an uplink channel between a second antenna port of the terminal device and an nth antenna port of the network device; q is a positive integer. The transceiver may be, for example, an input/output interface, pin or circuit, etc. on the chip.
In yet another possible design, the communication device may further include a memory for storing computer-executable instructions and data necessary for the communication device. When the communication apparatus is operating, the processor executes the computer-executable instructions stored in the memory to cause the communication apparatus to perform the channel information acquisition method according to the first aspect or any one of the possible designs of the first aspect.
In a fourth aspect, a computer-readable storage medium is provided, which may be a readable non-volatile storage medium, and the computer-readable storage medium stores instructions that, when executed on a computer, enable the computer to perform the channel information acquisition method according to the first aspect or any one of the above possible designs.
In a fifth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the channel information acquisition method of the first aspect or any one of the possible designs of the above aspect.
In a sixth aspect, a communication apparatus is provided, which may be a network device or a chip or a system on a chip in a network device, and includes one or more processors and one or more memories. The one or more memories are coupled to the one or more processors and the one or more memories are configured to store computer program code comprising computer instructions that, when executed by the one or more processors, cause the communication apparatus to perform the channel information acquisition method as set forth in the first aspect above or any possible design of the first aspect.
For technical effects brought by any design manner in the third aspect to the sixth aspect, reference may be made to the technical effects brought by the first aspect or any possible design manner in the first aspect, and details are not repeated.
In a seventh aspect, an embodiment of the present application provides a channel information acquiring method, where the method may include: the terminal equipment determines Q pieces of difference information and sends the Q pieces of difference information to the network equipment; each difference information in the Q pieces of difference information is used to indicate difference information of channel information of a second channel and channel information of a first channel, and the first channel is an uplink channel between a first antenna port of the terminal device and an nth antenna port of the network device; n is 1, 2, … N, where N is the number of antenna ports of the network device; the second channel is an uplink channel between the second antenna port of the terminal device and the nth antenna port of the network device.
Based on the method in the seventh aspect, the terminal device may determine difference information between channel information of channels between other antenna ports of the terminal device and antenna ports of the network device and channel information already acquired by the network device, and send the determined difference information to the network device, so that the network device obtains uplink channel information between the network device and the terminal device according to the acquired channel information and difference information of partial channels. Therefore, the network device can obtain complete channel information, and further transmit data according to the complete channel information, so as to improve data transmission performance, and meanwhile, in the method provided by the seventh aspect, the terminal device only needs to report difference information between the channel information of the channel, so that the overhead of reporting the measurement result by the terminal device and the signaling overhead are reduced.
In one possible design, Q is a positive integer less than or equal to (M-1) × N, and M is the number of antenna ports of the terminal device.
In one possible design, in combination with the seventh aspect, the difference information includes at least one of the following information: amplitude difference information of the channel, energy difference information of the channel, phase difference information of the channel, or delay difference information of the channel. Based on the possible design, the difference between the first channel and the second channel can be reflected from one or more aspects of the amplitude of the channel, the energy of the channel, the phase of the channel, the time delay and the like, and the method is simple and easy to implement.
In one possible design, with reference to the seventh aspect or the possible design of the seventh aspect, the first channel includes K first channel components, the second channel includes K corresponding second channel components, and K is a positive integer; the difference information includes: indication information of the K pieces of component difference information, each of the K pieces of component difference information including: and difference information between the channel information of the first channel component and the channel information of the corresponding second channel component.
The indication information of the K pieces of component difference information includes the K pieces of component difference information or indication information obtained according to the K pieces of component difference information, which is not limited.
Based on the possible design, in the case that the channel includes a plurality of channel components, the difference between the channel information of the channel is determined according to the difference between the channel information of the plurality of channel components of the channel, that is, the difference between the channel information of the channel is determined with the channel components as the granularity, and the determination accuracy of the difference information is improved.
In yet another possible design, with reference to the seventh aspect or the possible design of the seventh aspect, the difference information includes: and the difference information of the channel on one or more frequency points. Based on the possible design, the difference between the channels is determined according to the difference of the channels on one or more frequency points, namely the difference between the channels is determined by taking the frequency points as the granularity, and the determination precision of the difference information is improved.
In another possible design, with reference to the seventh aspect or the possible design of the seventh aspect, the Q pieces of difference information include: first difference information and second difference information; first difference information indicating difference information of channel information between the first second channel and the first channel; second difference information indicating difference information of channel information between the first second channel and the second channel. Based on the possible design, the difference information can be reported in a differential mode, and the reporting overhead is reduced.
In yet another possible design, with reference to the seventh aspect or the possible design of the seventh aspect, the terminal device receives indication information sent by the network device; the indication information is used for indicating the terminal equipment to report Q pieces of difference information. Based on the possible design, the terminal equipment receives the indication information sent by the network equipment and reports the difference information under the indication of the network equipment, and the method is simple and easy to implement.
In an eighth aspect, the present application provides a communication apparatus, which may be a terminal device, or a chip or a system on a chip in the terminal device, or may also be a functional module in the terminal device for implementing the method according to any one of the possible designs of the seventh aspect or the seventh aspect. The communication device may implement the functions performed by the terminal device in the above aspects or possible designs, and the functions may be implemented by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the functions. Such as: the communication apparatus may include: a processing unit, a transmitting unit;
a processing unit for determining Q pieces of difference information; wherein each difference information in the Q difference information is used to indicate a difference information between channel information of the second channel and channel information of the first channel, and the first channel is: an uplink channel between a first antenna port of the terminal device and an nth antenna port of the network device; n is 1, 2, … N, where N is the number of antenna ports of the network device; the second channel is: an uplink channel between a second antenna port of the terminal device and an nth antenna port of the network device; q is a positive integer less than or equal to (M-1) N;
and the sending unit is used for sending the Q pieces of difference information to the network equipment.
A specific implementation manner of the communication apparatus may refer to a behavior function of a terminal device in a channel information acquisition method provided in any one of the seventh aspects or possible designs of the seventh aspects, and any one of the seventh aspects or any one of the possible design methods of the seventh aspects may be implemented by a receiving unit, a processing unit, and a sending unit included in the communication apparatus, which is not repeated herein. Therefore, the communication device provided can achieve the same advantageous effects as any one of the possible designs of the seventh aspect or the seventh aspect.
In a ninth aspect, a communication apparatus is provided, which may be a terminal device or a chip or a system on a chip in the terminal device. The communication apparatus may implement the functions performed by the terminal device in the above aspects or possible designs, and the functions may be implemented by hardware, such as: in one possible design, the communication device may include: the processor determines Q pieces of difference information and sends the Q pieces of difference information to the network equipment through the transceiver; wherein, each difference information in the Q difference information is used to indicate a difference information between channel information of the second channel and channel information of the first channel, and the first channel is: an uplink channel between a first antenna port of the terminal device and an nth antenna port of the network device; n is 1, 2, … N, where N is the number of antenna ports of the network device; the second channel is: an uplink channel between a second antenna port of the terminal device and an nth antenna port of the network device; q is a positive integer less than or equal to (M-1) N. The transceiver may be, for example, an input/output interface, pin or circuit, etc. on the chip.
In yet another possible design, the communication device may further include a memory for storing computer-executable instructions and data necessary for the communication device. When the communication apparatus is operating, the processor executes the computer-executable instructions stored in the memory to cause the communication apparatus to perform the channel information acquisition method according to any one of the possible designs of the seventh aspect or the seventh aspect.
A tenth aspect provides a computer-readable storage medium, which may be a readable non-volatile storage medium, having stored therein instructions, which, when executed on a computer, enable the computer to execute the channel information acquisition method according to the seventh aspect or any one of the above possible designs.
In an eleventh aspect, there is provided a computer program product containing instructions which, when run on a computer, cause the computer to perform the channel information acquisition method according to the seventh aspect or any one of the possible designs of the above aspects.
In a twelfth aspect, a communication apparatus is provided, which may be a terminal device or a chip or a system on a chip in a terminal device, and includes one or more processors and one or more memories. The one or more memories are coupled to the one or more processors and the one or more memories are configured to store computer program code, the computer program code including computer instructions that, when executed by the one or more processors, cause the communication apparatus to perform the channel information acquisition method as set forth in any one of the possible designs of the seventh aspect or the seventh aspect.
For technical effects brought by any design manner of the ninth aspect to the twelfth aspect, reference may be made to the seventh aspect or any possible design manner of the seventh aspect, and details are not repeated.
In a thirteenth aspect, an embodiment of the present application provides a channel information acquiring system, which may include the network device in any one of the second aspect to the sixth aspect, and the terminal device in any one of the eighth aspect to the twelfth aspect.
Drawings
FIG. 1 is a schematic diagram of the principles provided by the embodiments of the present application;
fig. 2 is a schematic diagram of a communication system according to an embodiment of the present application;
fig. 3 is a schematic diagram illustrating a communication device according to an embodiment of the present disclosure;
fig. 4 is a flowchart of a channel information obtaining method according to an embodiment of the present application;
fig. 5 is a schematic diagram of a channel component according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a communication device 60 according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a communication device 70 according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a channel information acquiring system according to an embodiment of the present application.
Detailed Description
The method provided by the embodiment of the application is described in the following with reference to the attached drawings of the specification:
the channel information acquiring method provided in the embodiment of the present application may be applicable to a cellular communication system, a Long Term Evolution (LTE) system, a fifth generation (5th generation, 5G) mobile communication system, a new radio (NG) system, or other mobile communication systems, without limitation. The method provided by the embodiment of the present application is described below by taking the communication system shown in fig. 2 as an example.
Fig. 2 is a schematic architecture diagram of a communication system according to an embodiment of the present application, and as shown in fig. 2, the communication system may include: an access network device and a plurality of terminal devices. As shown in fig. 2, a single network device may transmit data or control signaling to a single or multiple terminal devices, or multiple network devices may simultaneously transmit data or control signaling for a single terminal device.
The terminal device in fig. 2 may be referred to as a terminal device (terminal equipment) or a User Equipment (UE), or a Mobile Station (MS), or a mobile terminal device (MT), and may be deployed on the water surface (such as a ship); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). Specifically, the terminal device in fig. 2 may be a mobile phone (mobile phone), a tablet computer, or a computer with a wireless transceiving function. The terminal device may also be a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in unmanned driving, a wireless terminal device in telemedicine, a wireless terminal device in a smart grid, a wireless terminal device in a smart city (smart city), a wireless terminal device in a smart home (smart home), and so on. In this embodiment of the present application, the apparatus for implementing the function of the terminal device may be the terminal device, or may be an apparatus capable of supporting the terminal device to implement the function, for example, a chip system. In the technical solution provided in the embodiment of the present application, a device for implementing a function of a terminal device is taken as an example, and the technical solution provided in the embodiment of the present application is described.
The network device in fig. 2 is mainly used to implement the functions of radio physical control, resource scheduling and radio resource management, radio access control, mobility management, and the like. Specifically, the network device may be AN Access Network (AN)/Radio Access Network (RAN) device, or a device composed of a plurality of 5G-AN/5G-RAN nodes, or any one of a base station (NB), AN evolved node b (eNB), a next generation base station (gbb), a transmission point (TRP), a Transmission Point (TP), and some other access node. In this embodiment of the present application, the apparatus for implementing the function of the network device may be a network device, or may be an apparatus capable of supporting the network device to implement the function, such as a chip system, without limitation.
In the system shown in fig. 2, the network device may have N antenna ports, and the terminal device may have M antenna ports, where N is an integer greater than or equal to 2, and M is an integer greater than or equal to 1; or N is an integer greater than or equal to 1 and M is an integer greater than or equal to 2. The network equipment and the terminal equipment can communicate with each other through N M channels. In order to obtain channel information of N × M channels, the network device obtains channel information between a single antenna port of the terminal device and all antenna ports of the network device by measuring the SRS, that is, obtains channel information of 1 × N channels, and then the terminal device calculates difference information between channel information of channels corresponding to other antenna ports of the terminal device and channels corresponding to antenna ports that transmit the SRS, and feeds back the difference information to the network device. And finally, the network equipment calculates the channel information of the N × M channels through the channel information of the 1 × N channels and the difference information fed back by the terminal equipment. The terminal device may calculate channel information of channels corresponding to other antenna ports of the terminal device according to measurement configuration information (e.g., a channel state information reference signal (CSI-RS)). Specifically, the implementation process may be described with reference to the corresponding embodiment in fig. 4.
It should be noted that fig. 2 is only an exemplary drawing, the number of devices included in fig. 2 is not limited, and the communication architecture may include other devices besides the devices shown in fig. 2, such as: core network devices, data networks, etc. may also be included. In addition, names of the respective devices in fig. 2 are not limited, and the respective devices may be named by other names in addition to the names shown in fig. 2 without limitation.
In particular implementations, each of the devices shown in FIG. 2 has the components shown in FIG. 3. Fig. 3 is a schematic composition diagram of a communication apparatus according to an embodiment of the present disclosure, where the communication apparatus may be a network device or a chip or a system on a chip inside the network device. As shown in fig. 3, the communication device 300 includes at least one processor 301, a communication line 302, and at least one transceiver 303; further, the communication device shown in fig. 3 may further include a memory 304. The processor 301, the memory 304 and the transceiver 303 may be connected by a communication line 302. In the embodiments of the present application, at least one of the two or more may be one, two, three or more, and the embodiments of the present application are not limited.
The processor 301 may be a Central Processing Unit (CPU), a Network Processor (NP), a Digital Signal Processor (DSP), a microprocessor, a microcontroller, a Programmable Logic Device (PLD), or any combination thereof. The processor may also be any other means having a processing function such as a circuit, device or software module.
A communication line 302 for transmitting information between the components comprised in the communication device.
A transceiver 303 for communicating with other devices or communication networks (e.g., ethernet, Radio Access Network (RAN), Wireless Local Area Networks (WLAN), etc.). As shown in fig. 3, the transceiver 303 may include a transmitter 3031, a receiver 3032, and an antenna port 3033. Receiver 3032 may be used to receive data or information via antenna port 3033, and transmitter 3031 may be used to transmit data or information to terminal devices via antenna port 3033. It should be noted that the name of the antenna port is not limited, and the antenna port may also be referred to as an antenna.
Memory 304, which may be a read-only memory (ROM) or other type of static storage device that may store static information and/or instructions, a Random Access Memory (RAM) or other type of dynamic storage device that may store information and/or instructions, an electrically erasable programmable read-only memory (EEPROM), a 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, but is not limited thereto.
The memory 304 may exist separately from the processor 301, be connected to the processor 301 through the communication line 302, or be integrated with the processor 301. The memory 304 may be configured to store instructions or program codes, and the processor 301 may be configured to implement the channel information obtaining method provided by the following embodiments of the present application when the processor 301 calls and executes the instructions or program codes stored in the memory 304.
As one implementation, the processor 301 includes one or more CPUs, such as CPU0 and CPU1 of FIG. 3. As another implementation, the communication device 300 may include multiple processors, such as the processor 301 and the processor 307 in fig. 3.
As yet another way of accomplishing this, the communication apparatus 300 further includes an output device 305 and an input device 306. Illustratively, the input device 306 may be a keyboard, mouse, microphone, joystick, or the like, and the output device 305 may be a display screen, speaker (spaker), or the like.
It should be noted that the communication apparatus 300 may be a desktop computer, a portable computer, a web server, a PDA, a mobile phone, a tablet computer, a wireless terminal device, an embedded device, a chip system, or a device with a similar structure as that in fig. 3. The embodiment of the present application does not limit the type of the communication apparatus 300.
In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices.
The following describes a channel information acquisition method provided in the embodiment of the present application with reference to the system shown in fig. 2. Each device mentioned in the following method embodiments may have a component shown in fig. 3, and is not described again. In addition, in the following embodiments of the present application, names of messages interacted between network elements or names of parameters in the messages are only an example, and other names may also be used in a specific implementation.
Fig. 4 is a flowchart of a channel information obtaining method according to an embodiment of the present application, where the channel information of all channels between a terminal device and a network device is obtained, the terminal device has M antenna ports, and the network device has N antenna ports. N is an integer greater than or equal to 2, M is an integer greater than or equal to 1; or N is an integer greater than or equal to 1 and M is an integer greater than or equal to 2. As shown in fig. 4, the channel information acquisition may include steps 401 to 404:
step 401: the network equipment acquires the channel information of the N first channels.
The network device may be any network device in the system shown in fig. 2.
The first channel is an uplink channel between a first antenna port of the terminal device and an nth antenna port of the network device, and the terminal device may be any device communicating with the network device. N is any value in [1, N ], such as: n is 1, 2, … N. The first antenna port may be any antenna port of the terminal device, without limitation, such as: is the antenna port 1 of the terminal device.
For example, for any one of the N first channels, the network device may obtain the channel information of the first channel by:
the terminal equipment sends the SRS to the network equipment through a first antenna port of the terminal equipment; the network device receives the SRS sent by the terminal device through the nth antenna port of the network device, and obtains channel information of an uplink channel between the first antenna port of the terminal device and the nth antenna port of the network device, that is, channel information of the first channel, according to the received SRS.
Further, the network device may refer to the above method, receive, at N-1 antenna ports of the network device except for the nth antenna port, the SRS transmitted by the terminal device, and obtain, according to the received SRS, channel information of N-1 other first channels.
It should be noted that, in the embodiment of the present application, reference may be made to the prior art for a process of obtaining channel information of a channel by a network device according to a received SRS, which is not described again.
For example, taking fig. 1 as an example, assuming that the terminal device sends the SRS to the network device through the antenna port 1, the network device may receive the SRS through the antenna port 1, and obtain channel information H of an uplink channel between the antenna port 1 of the terminal device and the antenna port 1 of the network device according to the received SRS11And receiving the SRS through the antenna port 2, and obtaining the channel information H of the uplink channel between the antenna port 1 of the terminal equipment and the antenna port 2 of the network equipment according to the received SRS21And channel information (H) of an uplink channel between the antenna port 2 of the terminal device and the antenna port 1 of the network device and the antenna port 2 of the network device12And H22) Still unknown, that is, the network device may obtain the uplink channel information shown in formula (2), where NA in formula (2) represents the unknown uplink channel information.
Figure BDA0002081221450000091
Step 402: the terminal device determines Q pieces of difference information.
Each piece of difference information in the Q pieces of difference information may be used to indicate difference information between channel information of a second channel and channel information between first channels, where the second channel is an uplink channel between a second antenna port of the terminal device and an nth antenna port of the network device, and the second antenna port is any antenna port on the terminal device except for the first antenna port. Such as: the first antenna port is an antenna port for sending the SRS on the terminal equipment, and the second antenna port is an antenna port for not sending the SRS on the terminal equipment. Specifically, the second channel and the first channel may be uplink channels between two different antenna ports of the terminal device and the same antenna port of the network device. Such as: taking fig. 1 as an example, the first channel may be H11The second channel may be H12。
In one possible design, Q is equal to (M-1) × N, i.e. the terminal device needs to determine the difference information between the channel information between all antenna ports not transmitting SRS and the antenna ports of the network device and the channel information between the first channel.
In yet another possible design, Q is a positive integer less than (M-1) × N. That is, the terminal device may determine difference information between channel information between the first channel and a channel between the antenna port of the network device and the antenna port of the partially non-SRS-transmitted antenna port. Such as: in all the second channels, if there are a plurality of second channels, and the channel characteristics of the plurality of second channels are the same (or almost the same), the difference information of the channel information between the plurality of second channels and the first channel is also the same (or almost the same), for the plurality of second channels, the terminal device may determine only one difference information to represent the difference information of the channel information between the plurality of second channels and the first channel, and in this case, Q may be smaller than (M-1) × N.
For example, assume that there are 6 channels H between the terminal device and the network device, 2x3 ═ 6 channels H11、H21、H31；H12、H22、H32And the network device obtains 3 channels (H) by measuring SRS11、H21、H31) And H, and12、H22、H32is unknown channel information. In one possible design, the terminal device may determine H11And H12Difference information between H22And H21Difference information between and H32And H31The difference information between them. In yet another possible design, H is verified, if any11And H12Difference information between H22And H21Difference information between, H32And H31The difference information between the two is the same or almost the same, the terminal device may only need to determine one difference information, for example: determination of H11And H12Difference information between or H22And H21Difference information between or H32And H31The difference information between them is sufficient.
For example, the terminal device may determine Q pieces of difference information according to the measurement configuration information sent by the network device. In particular, this process may be described with reference to the first embodiment of the method illustrated in FIG. 4, described below.
In the embodiment of the present application, the difference information may have a plurality of expression forms, such as: the difference information may be difference information between channels, difference information between channel components of a channel, difference information of a channel on one or more frequency points, difference information between different second channels, or difference information between equivalent channels, and the like. Specifically, reference may be made to the second embodiment shown in fig. 4 to the seventh embodiment shown in fig. 4 described below.
In the embodiments of the present application, a denotes a multiplication calculation, such as: (M-1) × N means (M-1) multiplied by N. In addition, the execution sequence of steps 401 and 402 is not limited in the embodiment of the present application, and as shown in fig. 4, step 401 may be executed first, and then step 402 is executed, or step 402 may be executed first, and then step 401 is executed, which is not limited.
Step 403: and the terminal equipment sends the Q pieces of difference information to the network equipment.
For example, the terminal device may send Q pieces of difference information to the network device through a Physical Uplink Control Channel (PUCCH), and send the PUCCH carrying the Q pieces of difference information to the network device.
Step 404: and the network equipment receives the Q pieces of difference information sent by the terminal equipment, and determines uplink channel information between the terminal equipment and the network equipment according to the channel information of the N first channels and the Q pieces of difference information.
For example, the network device may obtain the channel information of the second channel according to the channel information of the first channel and the difference information of the channel information between the first channel and the second channel, and then obtain the complete uplink channel information.
Such as: when the difference information is a difference value of channel information between the first channel and the second channel (or a quantized bit obtained after the difference value is quantized), the network device determines the difference value of the channel information between the first channel and the second channel according to the difference information of the channel information between the first channel and the second channel, and sums the channel information of the first channel and the difference value to obtain the channel information of the second channel.
When the difference information is a multiple value of the channel information between the first channel and the second channel (or a quantization bit obtained after the multiple value is subjected to quantization processing), the network device determines the multiple value of the channel information between the first channel and the second channel according to the difference information of the channel information between the first channel and the second channel, and multiplies the channel information of the first channel by the multiple value to obtain the channel information of the second channel.
For example, taking fig. 1 as an example, H obtained by SRS measurement by the network device11And H21And H receiving terminal device feedback12And H11Difference information of (2) and H21And H22The network device may be according to H11And H12And H11Calculating to obtain H12According to H21And H21And H22Calculating to obtain H22Thereby obtaining the channel information of the complete 2x2 channels.
Based on the method shown in fig. 4, the network device may obtain channel information of a channel between the antenna port included in the network device and one antenna port of the terminal device, obtain difference information from the terminal device, where the difference information is the difference information between the channel information of a channel between the other antenna ports of the terminal device and the antenna port of the network device and the channel information already obtained by the network device, and obtain channel information of all channels between the network device and the terminal device according to the obtained channel information and difference information of a part of channels. Therefore, the network device can obtain complete channel information, and further transmit data according to the complete channel information, so as to improve data transmission performance, meanwhile, in the method shown in fig. 4, in order to control the overhead of channel measurement, the terminal device does not directly feed back the channel information of all channels to the network device, only reports the difference information between the channel information of the channels, and reduces the overhead and signaling overhead of the terminal device in reporting the measurement result.
In the first embodiment of the method shown in fig. 4, the determining, by the terminal device, Q pieces of difference information may include: the terminal equipment receives measurement configuration information sent by the network equipment, obtains channel information of all channels (all first channels and all second channels) between the terminal equipment and the network equipment according to the received measurement configuration information, and determines Q pieces of difference information according to the channel information of the second channels and the channel information of the first channels.
Specifically, the terminal device may use a difference value obtained by subtracting the channel information of the second channel from the channel information of the first channel as the difference information. Alternatively, the terminal device may use a multiple value obtained by dividing the channel information of the second channel by the channel information of the first channel as the difference information. Or, the terminal device may perform subtraction calculation on the channel information of the second channel and the channel information of the first channel to obtain a difference value, and perform quantization processing on the difference value to obtain the difference information; or, the terminal device may perform division on the channel information of the second channel and the channel information of the first channel to obtain a multiple value, and perform quantization processing on the multiple value to obtain the difference information, which is not limited.
The measurement configuration information may be used to measure information of all channels between the terminal device and the network device. The measurement configuration information may include, but is not limited to, measurement resource configuration information and configuration information related to measurement result reporting. The measurement resource configuration information may include information about resources to be measured by the terminal device, such as: the measurement resource configuration information may include a transmission period of the resource, a type of the resource, and the like. The types of resources may include a combination of one or more of the following resources: a CSI-RS resource, a Synchronization Signal Block (SSB) resource.
The information related to reporting the measurement result may include a reporting period, a reporting content (report quality), and the like. The reporting content may include one or more of the following: an index of a resource, an index of an antenna, an index of a spatial path/spatial component, an index of a frequency subband, channel difference information, etc.
For example, the terminal device may receive measurement configuration information sent by the network device through a Physical Downlink Control Channel (PDCCH) from the terminal device. Such as: the network device may carry the measurement configuration information in the PDCCH, and send the PDCCH carrying the measurement configuration information to the terminal device.
For example, taking fig. 1 as an example, the terminal device may obtain the complete downlink channel information H by measuring the CSI-RSDL(as shown in formula (3)), HDLIs HULDetermining H according to the obtained downlink channel information by the transposed matrix12And H11Difference information between, and H22And H21Difference information between H12And H11The difference information between may be (H)12Minus H11) Or H12/H11Or H12/H11，H22And H21The difference information between may be (H)22Minus H21) Or H22/H21Or H21/H22. Wherein, if based on channel analysis, H is proved12And H11Difference information of (1) and H22And H21Is the same (or nearly the same), then only the difference information for a set of channels needs to be determined for the terminal device, such as: only H needs to be determined12And H11Difference information of (2) or H22And H21The difference information of (2) is sufficient.
Figure BDA0002081221450000111
In the second embodiment of the method shown in fig. 4, the channel information of the channel may include one or more of amplitude, delay, phase, energy, etc. of the channel, such as: the channel information of the first channel may include, but is not limited to, one or more of an amplitude of the first channel, a phase of the first channel, a time delay of the first channel, an energy of the first channel, and the like. The channel information of the second channel may include, but is not limited to, one or more of an amplitude of the second channel, a phase of the second channel, a time delay of the second channel, an energy of the second channel, and the like.
In the case that the channel information of the channel includes one or more of amplitude, delay, phase, energy, and the like of the channel, the difference information of the channel information between the second channel and the first channel may include at least one of the following information: amplitude difference information of the channel, energy difference information of the channel, phase difference information of the channel, and time delay difference information of the channel.
The amplitude difference information of the channel may refer to: the difference between the amplitude of the second channel and the amplitude of the first channel. Such as: the difference between the amplitude of the second channel and the amplitude of the first channel (or the quantization bit corresponding to the difference), or a multiple value (or a ratio) between the amplitude of the second channel and the amplitude of the first channel, or the quantization bit corresponding to the multiple value (or the ratio) between the amplitude of the second channel and the amplitude of the first channel, etc. may be used.
The energy difference information of the channel may refer to: information of a difference between the energy of the second channel and the energy of the first channel. Such as: the difference between the energy of the second channel and the energy of the first channel (or the quantization bit corresponding to the difference), or a multiple value (or a ratio) between the energy of the second channel and the energy of the first channel, or a quantization bit corresponding to the multiple value (or the ratio) between the energy of the second channel and the energy of the first channel, etc. may be used.
The phase difference information of the channel may refer to: the phase difference between the second channel and the first channel. Such as: the difference between the phase of the second channel and the phase of the first channel (or the quantization bit corresponding to the difference) may be, or a multiple value (or a ratio) between the phase of the second channel and the phase of the first channel, or a quantization bit corresponding to a multiple value (or a ratio) between the phase of the second channel and the phase of the first channel, and the like.
The delay difference information of the channel may refer to: the difference between the time delay of the second channel and the time delay of the first channel. Such as: the difference between the time delay of the second channel and the time delay of the first channel (or the quantized bit corresponding to the difference) may be, or a multiple value (or a ratio) between the time delay of the second channel and the time delay of the first channel, or the quantized bit corresponding to the multiple value (or the ratio) between the time delay of the second channel and the time delay of the first channel, and the like.
For example, the terminal device includes M antenna ports: antenna port 1, antenna port 2, and antenna port 3 … … …, where the terminal device sends an SRS at antenna port 1, the first channel is an uplink channel between antenna port 1 of the terminal device and an antenna port of the network device, the second channel is an uplink channel between other antenna ports of the terminal device except antenna port 1 and an antenna port of the network device, table one below shows three kinds of difference information (delay difference, phase difference, and amplitude difference) between channel information of the first channel and the second channel, and the terminal device can determine one or more kinds of difference information among the amplitude difference, the phase difference, and the delay difference shown in table one and report the difference information to the network device, which is not limited.
Watch 1
Figure BDA0002081221450000121
In a third embodiment of the method shown in fig. 4, according to the channel theory, the channel between the network device and the terminal device is composed of one or more channel components (alternatively referred to as spatial paths/spatial components), and the signal transmitted by the antenna port of the terminal device reaches the antenna port of the network device via the one or more channel components. The channel information of the channel between the antenna port of the terminal device and the antenna port of the network device may be seen as a superposition of the channel information of the channel components comprised by the channel.
For example, as shown in fig. 5, assuming that each channel between the network device and the terminal device includes three channel components, H11，H12，H21And H22Are composed of three channel components. As shown in FIG. 5, with H11For example, a signal sent by the antenna port 1 of the network device to the antenna port 1 of the terminal device reaches the antenna port 1 of the terminal device through three channel components (channel component 1, channel component 2, and channel component 3), and the signal passing through each channel component generates a certain amount of signalThe amplitude and phase variations of (a) can be regarded as the influence of the channel component on the signal, i.e. the channel characteristics of the channel component. The channel characteristics of each channel component are added together to form the channel characteristics (or channel information) of the whole channel. Thus, a channel characteristic on a channel component can be considered as a channel component, and a channel can be considered as a superposition of the channel components corresponding to the channel components, e.g.
Figure BDA0002081221450000122
Wherein
Figure BDA0002081221450000123
Are respectively H11Channel components on channel component 1, channel component 2, channel component 3.
In case the channel consists of one or more channel components (or spatial paths/spatial components), the channel information of the channel is seen as a superposition of the channel information of the one or more channel components it comprises. The difference information between the channel information of the second channel and the channel information of the first channel is embodied as a difference between the channel information of a plurality of channel components included in the second channel and the channel information of a plurality of corresponding channel components included in the first channel.
Exemplarily, the first channel includes K first channel components, the second channel includes K corresponding second channel components, and K is a positive integer; the difference information between the channel information of the first channel and the information of the second channel may include: indication information of the K pieces of component difference information, each of the K pieces of component difference information including: and difference information between the channel information of the first channel component and the channel information of the corresponding second channel component.
The indication information of the K component difference channels may include K component difference information or indication information obtained according to the K component difference information, such as: may be an indicator indicating the K component difference information, etc.
Specifically, the component difference information may include: component amplitude difference information, component energy difference information, component phase difference information, or component time delay difference information, etc.
Wherein, the component amplitude difference information may refer to: a magnitude difference between the first channel component and the corresponding second channel component. For example, the first channel and the second channel respectively include K channel components, and for the same channel component K, K is 1, 2, 3 … … K, when the same signal reaches the terminal device through the channel component K of the first channel and the channel component K through the second channel, the amplitudes of the signals may be different, that is, there is a component amplitude difference, which is the amplitude difference between the channel component K of the first channel and the channel component K of the second channel.
The component energy difference information may refer to: an energy difference between the first channel component and the corresponding second channel component. For example, the first channel and the second channel respectively include K channel components, and for the same channel component K, K is 1, 2, 3 … … K, when the same signal reaches the terminal device via the channel component K of the first channel and via the channel component K of the second channel, the energy of the signal may be different, that is, there is a component energy difference, which is the energy difference between the channel component K of the first channel and the channel component K of the second channel.
The component phase difference information may refer to: a phase difference between the first channel component and the corresponding second channel component. For example, the first channel and the second channel respectively include K channel components, and when the same signal reaches the terminal device via the channel component K of the first channel and the channel component K of the second channel, the phases of the signals may be different, that is, there is a component phase difference between the channel component K of the first channel and the channel component K of the second channel, where K is 1, 2, 3 … … K.
The component delay difference information may refer to: a delay difference between the first channel component and the corresponding second channel component. For example, the first channel and the second channel respectively include K channel components, and for the same channel component K, K is 1, 2, 3 … … K, when the same signal reaches the terminal device through the channel component K of the first channel and the channel component K through the second channel, the time delay of the signal may be different, that is, there is a component time delay difference, which is the time delay difference between the channel component K of the first channel and the channel component K of the second channel.
For example, as shown in fig. 5, channel H between antenna port 1 of the terminal device and antenna port 1 of the network device11Comprising three channel components
Figure BDA0002081221450000131
Channel H between antenna port 2 of terminal device and antenna port 1 of network device12Also includes three channel components
Figure BDA0002081221450000132
Channel H11And H12The difference in (b) can be embodied as a difference in three components:
Figure BDA0002081221450000133
and
Figure BDA0002081221450000134
the difference between the above-mentioned two components,
Figure BDA0002081221450000135
and
Figure BDA0002081221450000136
the difference between the above-mentioned two components,
Figure BDA0002081221450000137
and
Figure BDA0002081221450000138
the difference between them. In particular, can be
Figure BDA0002081221450000139
And
Figure BDA00020812214500001310
the difference in the amplitude between them is,
Figure BDA00020812214500001311
and
Figure BDA00020812214500001312
the difference in the amplitude between them is,
Figure BDA00020812214500001313
and
Figure BDA00020812214500001314
the difference in the amplitude between them is,
Figure BDA00020812214500001315
and
Figure BDA00020812214500001316
the time delay difference between the two is different,
Figure BDA00020812214500001317
and
Figure BDA00020812214500001318
the time delay difference between the two is different,
Figure BDA00020812214500001319
and
Figure BDA00020812214500001320
the time delay difference between the two is different,
Figure BDA00020812214500001321
and
Figure BDA00020812214500001322
the difference in the energy between the two phases,
Figure BDA00020812214500001323
and
Figure BDA00020812214500001324
the difference in the energy between them is,
Figure BDA00020812214500001325
and
Figure BDA00020812214500001326
the difference in the energy between them is,
Figure BDA00020812214500001327
and
Figure BDA00020812214500001328
the phase difference between the two phases is small,
Figure BDA00020812214500001329
and
Figure BDA00020812214500001330
the phase difference between the two phases is small,
Figure BDA00020812214500001331
and with
Figure BDA00020812214500001332
Phase difference between them, etc.
Wherein, in the third embodiment of the method shown in fig. 4, K may be equal to or less than the total number of channel components included in the channel. In one possible design, K is a fixed value that can be configured by the network device to the terminal device, such as: the network device may configure K to the network device through Radio Resource Control (RRC) signaling, medium access control-control element (MAC CE) information, or Downlink Control Information (DCI).
In yet another possible design, K is a predefined value, such as: may be a default value for the protocol.
In a further possible embodiment, K is not a fixed value, but is calculated by the terminal device using a certain criterion. For example, the signal energy intensity or the amplitude value of each channel component corresponding to each channel component is calculated by the terminal device. One possible calculation criterion is: the terminal equipment selects the K strongest channel components with the signal energy intensity ratio exceeding x% as the channel components of the channel difference to be reported. For example, if the terminal device detects that there are 10 channel components in the channel, and the ratio of the sum of the signal energy strengths of the first 3 channel components with the strongest signal energy to the sum of the signal energies of all the channel components exceeds x%, the terminal device needs to report the channel difference corresponding to the strongest first 3 channel components.
As described above, for an antenna port of a terminal device, the terminal device needs to determine a difference between a channel corresponding to the antenna port and a channel corresponding to an antenna transmitting an SRS in each channel component.
The terminal equipment comprises M antenna ports: antenna port 1, antenna port 2, and antenna port 3 … … …, where the terminal device sends an SRS at antenna port 1, the first channel is an uplink channel between antenna port 1 of the terminal device and an antenna port of the network device, the second channel is an uplink channel between other antenna ports of the terminal device except antenna port 1 and an antenna port of the network device, each channel includes multiple channel components as an example, the following table two shows three kinds of difference information (delay difference, phase difference, and amplitude difference) between the channel components of the first channel and the second channel, as shown in table two, for any channel component, the terminal device may determine one or more kinds of difference information among the amplitude difference, the phase difference, and the delay difference shown in table two, and report the difference information to the network device, without limitation.
Watch two
Figure BDA0002081221450000141
In the fourth embodiment of the method shown in fig. 4, the channel between the terminal device and the network device corresponds to one or more frequency points, and the channel has different channel characteristics on different frequency points, and in view of this, the difference between the channel information of the first channel and the second channel may also be embodied in the difference information of the channel on one or more frequency points.
Specifically, the difference information at one or more frequency points may include amplitude difference information of a channel at one or more frequency points, energy difference information at one or more frequency points, phase difference information at one or more frequency points, delay difference information at one or more frequency points, and the like.
The frequency point may correspond to a Resource Block (RB), or may correspond to a plurality of consecutive RBs, for example: the frequency points correspond to Resource Block Groups (RBGs)/subbands.
The terminal equipment comprises M antenna ports: antenna port 1, antenna port 2, and antenna port 3 … … …, where the terminal device sends an SRS on antenna port 1, the first channel is an uplink channel between antenna port 1 of the terminal device and an antenna port of the network device, the second channel is an uplink channel between other antenna ports of the terminal device except antenna port 1 and an antenna port of the network device, each channel corresponds to frequency point 1 and frequency point 2 as an example, table two below shows three kinds of difference information (delay difference, phase difference, and amplitude difference) of the first channel and the second channel on frequency point 1 and frequency point 2, as shown in table three, for any frequency point, the terminal device can determine one or more kinds of difference information among the amplitude difference, the phase difference, and the delay difference shown in table three, and report the difference information to the network device without limitation.
Watch III
Figure BDA0002081221450000151
In the fifth embodiment of the method shown in fig. 4, it is proved that the difference between the channels corresponding to the adjacent antenna ports of the terminal device is the same or close to the same, and therefore, the terminal device may also determine only the difference information between the channels corresponding to any pair of adjacent antenna ports of the terminal device and feed the difference information back to the network device.
In particular, when the channel includes multiple spatial paths, for any spatial path, the difference information of the channel components of the channel corresponding to any adjacent antenna port on the spatial path is the same or nearly the same, so that no matter how many antenna ports the terminal device has, only the difference information of the channel components of the channel corresponding to each adjacent two antenna ports on each path needs to be fed back, and the difference information between the channel corresponding to each antenna port and the channel corresponding to the antenna port transmitting the SRS does not need to be fed back, that is, the terminal device may only determine the difference information of the channel corresponding to any pair of adjacent antenna ports on the spatial path, and feed back the determined difference information to the network device.
For example, as shown in fig. 1, antenna port 1 of the terminal device is adjacent to antenna port 2 of the terminal device, and the two are adjacent antenna ports, antenna port 2 of the terminal device is adjacent to antenna port 3 of the terminal device, and the two are adjacent antenna ports, and taking an example that each channel includes multiple spatial paths, channel H11And H12Component on spatial path 1
Figure BDA0002081221450000153
And
Figure BDA0002081221450000154
and the difference information of (2) with the channel H12And H13Component on spatial path 1
Figure BDA0002081221450000155
And
Figure BDA0002081221450000156
is the same, the terminal device may be H only11And H12And the difference information on the spatial path is fed back to the network equipment.
The terminal equipment comprises M antenna ports: antenna port 1, antenna port 2, and antenna port 3 … … …, where the terminal device sends an SRS at antenna port 1, the first channel is an uplink channel between antenna port 1 of the terminal device and an antenna port of the network device, the second channel is an uplink channel between other antenna ports of the terminal device except antenna port 1 and an antenna port of the network device, each channel includes a plurality of spatial paths as an example, the following table four shows three kinds of difference information (delay difference, phase difference, and amplitude difference) of channel components of two adjacent antenna ports on each spatial path, and the terminal device can determine one or more kinds of difference information among the amplitude difference, the phase difference, and the delay difference shown in table four and report the difference information to the network device, without limitation.
Watch four
Figure BDA0002081221450000152
In a sixth embodiment of the method shown in fig. 4, the Q pieces of difference information may include first difference information and second difference information; the first difference information may be difference information indicating channel information between the first second channel and the first channel; the second difference information may be used to indicate difference information of channel information between the second channel and the first second channel.
Thus, the terminal device may first find a reference channel (e.g., a first second channel) from the second channel, determine difference information between channel information of the reference channel and the first channel, and difference information between channel information of other second channels and the first information, then determine difference information between difference information corresponding to other channels and difference information corresponding to the reference channel, and report the determined difference information to the network device, without directly reporting difference information between channel information of other second channels and the first channel to the network device, that is, the sixth embodiment of the method shown in fig. 4 may report difference information by using a difference method, thereby reducing the reporting overhead.
In the sixth embodiment of the method shown in fig. 4, the difference information may include one or more of amplitude difference, phase difference, time delay difference, and energy difference. The first channel may be a second channel having the largest difference information with the channel information of the first channel among all the second channels.
For example, with a terminal device comprising M antenna ports: antenna port 1, antenna port 2, antenna port 3 … … …, and the terminal device sends SRS on antenna port 1, and the first channel is the space between antenna port 1 of the terminal device and the antenna port of the network deviceThe second channel is a channel between another antenna port of the terminal device except the antenna port 1 and an antenna port of the network device, for example, and table five shows a plurality of amplitude differences, phase differences, and delay differences between the second channel and the first channel. As shown in table five, a first amplitude difference (Δ a) between the first channel and the second channel corresponding to the antenna port 2 can be obtained21) As a reference amplitude difference, the first amplitude difference is quantized with y bits. For amplitude differences between the other second channel and the first channel, such as: the amplitude difference Δ a between the second channel and the first channel corresponding to the antenna port 331Amplitude difference Δ a between the second channel and the first channel corresponding to the antenna port mm1Z (z) can be used<y) bits to quantize the difference of the amplitude difference and the reference amplitude difference without directly quantizing the amplitude difference. Likewise, the method may be used to determine the phase and delay differences between the second channel and the first channel.
Watch five
Figure BDA0002081221450000161
In a seventh embodiment of the method shown in fig. 4, the terminal device may further determine difference information between the statistical average channel information of the two groups of channels, and report the determined difference information to the network device.
In one example, the terminal device may determine difference information between channel information of an equivalent channel between each antenna port of the terminal device, which transmits the SRS, and all antenna ports of the network device and channel information of an equivalent channel between other antenna ports of the terminal device and all antenna ports of the network device, and feed back the determined difference information to the network device.
The equivalent channel is a channel obtained by averaging all channels equivalently. Averaging N channels between the antenna port of the terminal device for sending the SRS and all antenna ports of the network device to obtain an equivalent channel, averaging N channels between other antenna ports of the terminal device and all antenna ports of the network device to obtain an equivalent channel, calculating difference information (such as amplitude difference, energy difference, phase difference and time delay difference) between the former antenna port and the latter antenna port, and feeding back the difference information to the network device.
For example, taking fig. 1 as an example, the terminal device may be H11And H21Averaging to obtain an equivalent channel H1, and averaging H12And H22And averaging to obtain an equivalent channel H2, determining difference information between H2 and H1, and reporting to the network equipment.
In another example, the terminal device may further determine channel information of N first channels and channel information of N second channels corresponding to antenna ports that do not transmit SRS, calculate N pieces of difference information between the channel information of the N first channels and the channel information of the N second channels, perform average calculation on the N pieces of difference information to obtain an equivalent average value, and report the obtained equivalent average value to the network device.
For example, assume that there are 9 channels H between the terminal device and the network device, where 3x3 is equal to11、H21、H31；H12、H22、H32，H13、H23、H33And the network device obtains 3 channels (H) by measuring SRS11、H21、H31) Can calculate H11And H12Difference information between H22And H21Difference information between, H32And H31The difference information among the three difference information is averaged to obtain an equivalent average value, the equivalent average value is reported to the network equipment, and meanwhile, the terminal equipment can also calculate H11And H13Difference information between H23And H21Difference information between, H33And H31And averaging the three difference information to obtain an equivalent average value, and reporting the equivalent average value to the network equipment.
It should be noted that, in addition to reporting the difference information, the terminal device may also report one or more of the following information to the network device: the transmission angles of the multiple spatial paths, the arrival angles of the multiple spatial paths, the antenna spacing of the terminal equipment, the horizontal antenna spacing of the terminal equipment, the vertical antenna spacing of the terminal equipment and the like. So that the network device can more accurately recover the complete channel information based on the information.
In addition, optionally, the difference information (amplitude difference, phase difference, delay difference, etc.) between the channel information of the second channel and the channel information of the first channel may be reported to the network through a format such as a difference value or a ratio or a quantization bit, and the terminal device may also report parameters corresponding to the difference information (amplitude difference, phase difference, delay difference, etc.) between the channel information of the second channel and the channel information of the first channel, so that the network device may calculate the difference information (amplitude difference, phase difference, delay difference, etc.) between the channel information according to the reported parameters, that is, the terminal device may report some intermediate parameters instead of directly reporting the amplitude difference, the phase difference or the delay difference through a special field, and may determine the value of the amplitude difference, the phase difference, or the delay difference based on the intermediate parameters.
In an eighth embodiment of the method shown in fig. 4, the method may further comprise: the network equipment sends the indication information to the terminal equipment, and the terminal equipment receives the indication information sent by the network equipment; the indication information is used for indicating the terminal equipment to report Q pieces of difference information.
Therefore, the network equipment sends the indication information to the terminal equipment, so that the terminal equipment reports the difference information between the channel information based on the indication information, the method is simple and easy to implement, and the terminal equipment reports the difference information after receiving the indication information, thereby reducing the power consumption of the terminal equipment.
The above-mentioned scheme provided by the embodiments of the present application is mainly introduced from the perspective of interaction between the nodes. It is understood that each node, for example, a network device and a terminal device, includes a corresponding hardware structure and/or a software module for performing each function in order to implement the functions described above. Those of skill in the art will readily appreciate that the present application is capable of hardware or a combination of hardware and computer software implementing the various illustrative algorithm steps described in connection with the embodiments disclosed herein. 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 device may be divided into the functional modules according to the above method examples, 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.
Fig. 6 is a schematic structural diagram of a communication device 60 according to an embodiment of the present disclosure. The communication apparatus according to this embodiment may be a network device or a chip or a system on a chip in a network device. The communication means 60 may be adapted to perform the functions of the network device in the above-described method embodiments. In one implementation, as shown in fig. 6, the communication device may include: processing unit 601, receiving unit 602.
A processing unit 601, configured to obtain channel information of N first channels; wherein, the first channel is: an uplink channel between a first antenna port of the terminal device and an nth antenna port of the network device; n is 1, 2, … N, where N is the number of antenna ports of the network device;
a receiving unit 602, configured to receive Q pieces of difference information sent by a terminal device; wherein each difference information in the Q difference information is used to indicate a difference information between channel information of the second channel and channel information of the first channel, and the second channel is: an uplink channel between a second antenna port of the terminal device and an nth antenna port of the network device; q is a positive integer. For example, the receiving unit 602 may be used to support the communication device 60 to perform step 404.
The processing unit 601 is further configured to determine uplink channel information between the terminal device and the network device according to the channel information of the N first channels and the Q difference information. For example, processing unit 601 may be used to enable communication apparatus 60 to perform step 404.
Specifically, the communication device 60 provided in the embodiment of the present application may perform the actions of the network device in the method embodiment corresponding to fig. 4, which have similar implementation principles and technical effects and are not described herein again.
As still another implementation, the communication device 60 shown in fig. 6 may include: a processing module and a communication module. The processing module may integrate the functionality of the processing unit 601 and the communication module may integrate the functionality of the receiving unit 602. The processing module is configured to support the communication device 60 to perform steps 401 and 404 and perform control management on actions of the communication device 60, and the communication module is configured to support the communication device 60 to perform steps 404 and communicate with other network entities. Further, the communication device 60 shown in fig. 6 also includes a storage module for storing program codes and data of the communication device 60.
The processing module may be a processor or a controller. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a DSP and a microprocessor, or the like. The communication module may be a transceiver circuit or transceiver, etc. The storage module may be a memory. When the processing module is a processor, the communication module is a transceiver, and the storage module is a memory, the communication device 60 shown in fig. 6 can be the communication device shown in fig. 3.
As another implementation manner, the present application further provides a communication apparatus, which may be a component (e.g., a chip or a circuit) that can be used in a network device. The communication device may include a processor and, optionally, a transceiver and a memory. Wherein the processor may be configured to implement the corresponding functions and operations of the processing unit 601, and the transceiver may be configured to implement the corresponding functions and operations of the receiving unit 602. The memory may be configured to store an execution instruction or an application program code, and is controlled by the processor to execute the execution instruction or the application program code, so as to implement the channel information obtaining method provided in the foregoing embodiment of the present application; and/or may be used to temporarily store some data and instruction information, etc. The memory may exist independently of the processor, in which case the memory may be coupled to the processor via a communication line. In yet another possible design, the memory may be integrated with the processor, and the embodiment of the present application is not limited thereto.
Fig. 7 is a schematic structural diagram of a communication device 70 according to an embodiment of the present disclosure. The communication device according to this embodiment may be a terminal device or a chip or a system on a chip in the terminal device. The communication means 70 may be used to perform the functions of the terminal device in the above-described method embodiments. In one implementation, as shown in fig. 7, the communication device may include: processing section 701 and transmitting section 702.
A processing unit 701, configured to determine Q pieces of difference information; wherein each difference information of the Q difference information is used to indicate a difference information between channel information of a second channel and channel information of a first channel, and the first channel is: an uplink channel between a first antenna port of the terminal device and an nth antenna port of the network device; n is 1, 2, … N, where N is the number of antenna ports of the network device; the second channel is: an uplink channel between a second antenna port of the terminal device and an nth antenna port of the network device; and Q is a positive integer. For example, processing unit 701 may be used to enable communication device 70 to perform step 402. For example, processing unit 701 may be used to enable communication device 70 to perform step 402.
A sending unit 702, configured to send the Q pieces of difference information to the network device. For example, the sending unit 702 may be configured to support the communication apparatus 70 to perform step 403.
Specifically, the communication device 70 provided in this embodiment of the present application may execute the actions of the terminal device in the method embodiment corresponding to fig. 4, which have similar implementation principles and technical effects, and are not described herein again.
As still another implementation, the communication device 70 shown in fig. 7 may include: a processing module and a communication module. The processing module may integrate the functionality of the processing unit 701 and the communication module may integrate the functionality of the transmitting unit 702. The processing module is used for supporting the communication device 70 to execute the step 402 and control and manage the actions of the communication device 70, and the communication module is used for supporting the communication device 70 to execute the step 403 and communicate with other network entities. Further, the communication device 70 shown in fig. 7 also includes a memory module for storing program codes and data of the communication device 70.
The processing module may be a processor or a controller. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a DSP and a microprocessor, or the like. The communication module may be a transceiver circuit or transceiver, etc. The storage module may be a memory. When the processing module is a processor, the communication module is a transceiver, and the storage module is a memory, the communication device 70 shown in fig. 7 may be the communication device shown in fig. 3.
As another implementation manner, the present application also provides a communication apparatus, which may be a component (e.g., a chip or a circuit) that can be used in a network device. The communication device may include a processor and, optionally, a transceiver and a memory. Wherein the processor may be configured to implement the corresponding functions and operations of the processing unit 701 described above, and the transceiver may be configured to implement the corresponding functions and operations of the transmitting unit 702 described above. The memory may be configured to store an execution instruction or an application program code, and is controlled by the processor to execute the execution instruction or the application program code, so as to implement the channel information obtaining method provided in the foregoing embodiment of the present application; and/or may be used to temporarily store some data and instruction information, etc. The memory may exist independently of the processor, in which case the memory may be coupled to the processor via a communication line. In yet another possible design, the memory may be integrated with the processor, and the embodiment of the present application is not limited thereto.
Fig. 8 is a schematic structural diagram of a channel information acquiring system according to an embodiment of the present application, and as shown in fig. 8, the system may include a network device 80 and a plurality of terminal devices 81.
The network device 80 has the same function as the communication apparatus 60 shown in fig. 6. The terminal device 81 has the same function as the communication apparatus 70 shown in fig. 7.
For example, the network device 80 is configured to obtain channel information of N first channels; wherein, the first channel is: an uplink channel between the first antenna port of the terminal device 81 and the nth antenna port of the network device 80; n is 1, 2, … N, where N is the number of antenna ports of the network device 80;
a terminal device 81, configured to determine Q pieces of difference information, and send Q pieces of difference information to the network device 80; wherein each difference information in the Q difference information is used to indicate a difference information between channel information of the second channel and channel information of the first channel, and the second channel is: an uplink channel between the second antenna port of the terminal device 81 and the nth antenna port of the network device 80; q is a positive integer.
The network device 80 is further configured to receive Q pieces of difference information sent by the terminal device 81, and determine uplink channel information between the terminal device 81 and the network device 80 according to the channel information of the N first channels and the Q pieces of difference information.
Specifically, the channel information acquiring system provided in the embodiment of the present application may execute the method embodiment corresponding to fig. 4, which has similar implementation principles and technical effects and is not described in detail again.
Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical functional division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another device, 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 be one physical unit or a plurality of physical units, that is, may be located in one place, or may be distributed in a plurality of different places. 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 integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or partially contributed to by the prior art, or all or part of the technical solutions may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should 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 (25)

1. A method for acquiring channel information, the method comprising:
the method comprises the steps that the network equipment obtains channel information of N first channels; wherein the first channel is: an uplink channel between a first antenna port of a terminal device and an nth antenna port of the network device; n is 1, 2, … N, where N is the number of antenna ports of the network device;
the network equipment receives Q pieces of difference information sent by the terminal equipment; wherein each difference information of the Q difference information is used to indicate a difference information between channel information of a second channel and channel information of the first channel, and the second channel is: an uplink channel between a second antenna port of the terminal device and an nth antenna port of the network device; q is a positive integer; the first channel comprises K first channel components, the second channel comprises K corresponding second channel components, and K is a positive integer; the difference information includes: indication information of K pieces of component difference information, each of the K pieces of component difference information including: difference information of channel information of the first channel component and channel information of the corresponding second channel component;
and the network equipment determines uplink channel information between the terminal equipment and the network equipment according to the channel information of the N first channels and the Q difference information.
2. The method of claim 1, wherein the difference information comprises at least one of: amplitude difference information of the channel, energy difference information of the channel, phase difference information of the channel, or delay difference information of the channel.
3. The method according to claim 1 or 2, wherein the difference information comprises: and the difference information of the channel on one or more frequency points.
4. The method according to claim 1 or 2, wherein the Q pieces of difference information include: first difference information and second difference information; the first difference information is used for indicating difference information of channel information between a first second channel and the first channel;
the second difference information is used for indicating the difference information of the channel information between the first second channel and the second channel.
5. The method according to claim 1 or 2, characterized in that the method further comprises:
the network equipment sends indication information to the terminal equipment; and the indication information is used for indicating the terminal equipment to report the Q pieces of difference information.
6. A method for acquiring channel information, the method comprising:
the terminal equipment determines Q pieces of difference information; wherein each difference information of the Q difference information is used to indicate a difference information between channel information of a second channel and channel information of a first channel, and the first channel is: an uplink channel between a first antenna port of the terminal device and an nth antenna port of the network device; n is 1, 2, … N, where N is the number of antenna ports of the network device; the second channel is: an uplink channel between a second antenna port of the terminal device and an nth antenna port of the network device; q is a positive integer; the first channel comprises K first channel components, the second channel comprises K corresponding second channel components, and K is a positive integer; the difference information includes: indication information of K pieces of component disparity information, each of the K pieces of component disparity information including: difference information of channel information of the first channel component and channel information of the corresponding second channel component;
and the terminal equipment sends the Q pieces of difference information to the network equipment.
7. The method of claim 6, wherein the difference information comprises at least one of: amplitude difference information of the channel, energy difference information of the channel, phase difference information of the channel, or delay difference information of the channel.
8. The method according to claim 6 or 7, wherein the difference information comprises: and the difference information of the channel on one or more frequency points.
9. The method according to claim 6 or 7, wherein the Q pieces of difference information comprise: first difference information and second difference information; the first difference information is used for indicating difference information of channel information between a first second channel and the first channel;
the second difference information is used for indicating the difference information of the channel information between the first second channel and the second channel.
10. The method according to claim 6 or 7, characterized in that the method further comprises:
the terminal equipment receives the indication information sent by the network equipment; and the indication information is used for indicating the terminal equipment to report the Q pieces of difference information.
11. A network device, characterized in that the network device comprises:
a processing unit, configured to obtain channel information of N first channels; wherein the first channel is: an uplink channel between a first antenna port of a terminal device and an nth antenna port of the network device; n is 1, 2, … N, where N is the number of antenna ports of the network device;
a receiving unit, configured to receive Q pieces of difference information sent by the terminal device; wherein each difference information of the Q difference information is used to indicate a difference information between channel information of a second channel and channel information of the first channel, and the second channel is: an uplink channel between a second antenna port of the terminal device and an nth antenna port of the network device; q is a positive integer; the first channel comprises K first channel components, the second channel comprises K corresponding second channel components, and K is a positive integer; the difference information includes: indication information of K pieces of component difference information, each of the K pieces of component difference information including: difference information of channel information of the first channel component and channel information of the corresponding second channel component;
the processing unit is further configured to determine uplink channel information between the terminal device and the network device according to the channel information of the N first channels and the Q difference information.
12. The network device of claim 11, wherein the difference information comprises at least one of: amplitude difference information of the channel, energy difference information of the channel, phase difference information of the channel, or delay difference information of the channel.
13. The network device of claim 11 or 12, wherein the difference information comprises: and the difference information of the channel on one or more frequency points.
14. The network device of claim 11 or 12, wherein the Q pieces of difference information comprise: first difference information and second difference information; the first difference information is used for indicating difference information of channel information between a first second channel and the first channel;
the second difference information is used for indicating the difference information of the channel information between the first second channel and the second channel.
15. The network device of claim 11 or 12, wherein the network device further comprises:
the sending unit is also used for sending indication information to the terminal equipment; and the indication information is used for indicating the terminal equipment to report the Q pieces of difference information.
16. A terminal device, characterized in that the terminal device comprises:
a processing unit for determining Q pieces of difference information; wherein each difference information of the Q difference information is used to indicate a difference information between channel information of a second channel and channel information of a first channel, and the first channel is: an uplink channel between a first antenna port of the terminal device and an nth antenna port of the network device; n is 1, 2, … N, where N is the number of antenna ports of the network device; the second channel is: an uplink channel between a second antenna port of the terminal device and an nth antenna port of the network device; q is a positive integer; the first channel comprises K first channel components, the second channel comprises K corresponding second channel components, and K is a positive integer; the difference information includes: indication information of K pieces of component difference information, each of the K pieces of component difference information including: difference information of channel information of the first channel component and channel information of the corresponding second channel component;
a sending unit, configured to send the Q pieces of difference information to the network device.
17. The terminal device according to claim 16, wherein the difference information includes at least one of the following information: amplitude difference information of the channel, energy difference information of the channel, phase difference information of the channel, or delay difference information of the channel.
18. The terminal device according to claim 16 or 17, wherein the difference information comprises: and the difference information of the channel on one or more frequency points.
19. The terminal device according to claim 16 or 17, wherein the Q pieces of difference information include: first difference information and second difference information; the first difference information is used for indicating difference information of channel information between a first second channel and the first channel;
the second difference information is used for indicating the difference information of the channel information between the first second channel and the second channel.
20. The terminal device according to claim 16 or 17, characterized in that the terminal device further comprises:
the receiving unit is further used for receiving the indication information sent by the network equipment; and the indication information is used for indicating the terminal equipment to report the Q pieces of difference information.
21. A communications apparatus, comprising:
a memory for storing computer programs or instructions;
further comprising a processor coupled with the memory for executing the computer program or instructions in the memory to perform the method of any of claims 1 to 5.
22. A communications apparatus, comprising:
a memory for storing computer programs or instructions;
further comprising a processor coupled with the memory for executing the computer program or instructions in the memory to perform the method of any of claims 6 to 10.
23. A computer-readable storage medium, which stores a program or instructions that, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 5.
24. A computer-readable storage medium, storing a program or instructions which, when run on a computer, causes the computer to perform the method of any one of claims 6 to 10.
25. A communications apparatus, comprising:
a processor for executing a computer program or instructions in a memory, thereby implementing the method of any of claims 1 to 5; or to implement a method as claimed in any one of claims 6 to 10.
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