CN111262667B

CN111262667B - Channel detection configuration method and device

Info

Publication number: CN111262667B
Application number: CN201811460043.2A
Authority: CN
Inventors: 施弘哲; 毕晓艳; 金黄平; 纪刘榴
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-11-30
Filing date: 2018-11-30
Publication date: 2022-04-05
Anticipated expiration: 2038-11-30
Also published as: CN111262667A; WO2020108637A1

Abstract

The application provides a channel detection configuration method and device, relates to the technical field of communication, and is used for enabling network equipment to acquire a downlink channel detection mode supported by a terminal so that the network equipment can correctly configure and schedule reference signal resources. The method comprises the following steps: the terminal generates detection capability information, and the detection capability information is used for indicating a channel detection mode supported by the terminal; then, the terminal sends the detection capability information to the network equipment; in this way, the network device can determine the channel sounding mode supported by the terminal according to the sounding capability information. The method and the device are suitable for the process of reporting the terminal capacity.

Description

Channel detection configuration method and device

Technical Field

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

Background

The channel sounding technology is an indispensable technology for wireless communication, and is used for acquiring channel information. It can be understood that, especially in the case that the communication system supports multi-user transmission, the accurate channel information can improve the accuracy of precoding, thereby better eliminating inter-stream interference and improving the overall performance of multi-user transmission. Currently, downlink channel detection modes can be mainly divided into two types, one is a downlink channel detection mode based on codebook feedback, and a typical application scenario thereof is, for example, a Frequency Division Duplex (FDD) scenario; the other is a downlink channel sounding mode based on channel reciprocity, and a typical application scenario thereof is, for example, a Time Division Duplex (TDD) scenario.

With the improvement of codebook feedback precision and the technical evolution of downlink channel detection modes based on reciprocity, the two channel detection modes are gradually not strongly bound with a scene any more, for example, in a TDD scene, the downlink channel detection mode based on codebook feedback can also approach to the upper limit of channel capacity, and in an FDD scene, the downlink channel information can also be obtained to a certain extent by using channel reciprocity. Therefore, the two downlink channel sounding manners have a basis of coexistence in the same communication system, even in the same communication scene.

However, the two downlink channel sounding manners have different requirements on software and hardware of the terminal, and the capabilities of different terminals are different in consideration of factors such as product location and equipment cost. Thus, the network device cannot correctly perform configuration and scheduling of the reference signal resource without knowing whether the terminal supports different downlink channel sounding modes. Currently, the industry does not provide a suitable solution to this problem.

Disclosure of Invention

The application provides a channel detection configuration method and device, which are used for enabling network equipment to acquire a channel detection mode supported by a terminal so as to facilitate the network equipment to correctly configure and schedule reference signal resources.

In order to achieve the purpose, the application provides the following technical scheme:

in a first aspect, a method for configuring channel sounding is provided, including: the terminal generates detection capability information, and the detection capability information is used for indicating a channel detection mode supported by the terminal; and then, the terminal sends the detection capability information to the network equipment. Therefore, the network device can obtain the channel detection mode supported by the terminal from the detection capability information, so that the network device can correctly perform configuration and scheduling of the reference signal resource.

Optionally, the channel detection mode includes at least one of a downlink channel detection mode based on channel reciprocity and a downlink channel detection mode based on codebook feedback.

Alternatively, the channel detection modes include a first detection mode, a second detection mode, and a third detection mode. The first detection mode is a downlink channel detection mode based on codebook feedback only. The second detection mode is a downlink channel detection mode based on channel reciprocity only. The third detection mode is a downlink channel detection mode combining channel reciprocity and codebook feedback.

In one possible design, the detection capability information includes at least one of information of a first detection mode, information of a second detection mode, and information of a third detection mode.

In one possible design, if the probing capability information includes information of one or more first-type probing manners, the probing capability information is used to indicate that the terminal supports the corresponding one or more first-type probing manners. And if the detection capability information does not comprise any information of the first type of detection mode, the detection capability information is used for indicating that the terminal supports the second type of detection mode. The second detection mode is a detection mode other than the first detection mode in the channel detection mode.

In a possible design, if the probing capability information includes the first parameter, the probing capability information is used to indicate that the terminal supports at least one of the second probing manner and the third probing manner.

In one possible design, the detection capability information includes a second parameter. The second parameter is used for indicating antenna port information of the terminal, and the antenna port information of the terminal comprises the number of transmitting antenna ports and the number of receiving antenna ports. If the number of transmit antenna ports indicated by the second parameter is equal to the number of receive antenna ports indicated by the second parameter, the sounding capability information is used to indicate that the terminal supports at least the second sounding mode. If the number of the transmitting antenna ports indicated by the second parameter is not equal to the number of the receiving antenna ports indicated by the second parameter, the probing capability information is used for indicating that the terminal supports at least a third probing manner.

In one possible design, the detection capability information includes a second parameter and a third parameter. The third parameter is used for indicating the antenna port information of the terminal with the antenna selection capability. And if the antenna port information with the antenna selection capability indicated by the third parameter is consistent with the antenna port information of the terminal indicated by the second parameter, the detection capability information is used for indicating that the terminal at least supports the second detection mode. If the antenna port information with the antenna selection capability indicated by the third parameter is inconsistent with the antenna port information of the terminal indicated by the second parameter, the probing capability information is used for indicating that the terminal supports the third probing manner, or the probing capability information is used for indicating that the terminal supports the third probing manner and the first probing manner.

In one possible design, the sounding capability information includes a second parameter and a fourth parameter, and the fourth parameter is used to indicate whether the terminal has the antenna selection capability. And if the fourth parameter is used for indicating that the terminal has the antenna selection capability, the detection capability information is used for indicating that the terminal at least supports the second detection mode. If the fourth parameter is used to indicate that the terminal does not have the antenna selection capability, and the number of receiving antenna ports indicated by the second parameter is not equal to the number of transmitting antenna ports indicated by the second parameter, the probing capability information is used to indicate that the terminal supports the third probing manner, or the probing capability information is used to indicate that the terminal supports the first probing manner and the third probing manner.

In a possible design, if the probing capability information includes the fifth parameter, the probing capability information is used to indicate that the terminal supports the third probing method. Wherein the fifth parameter is used for indicating that the terminal does not support channel reciprocity.

In one possible design, the method further includes: the terminal receives indication information sent by the network equipment, wherein the indication information is used for indicating a target channel detection mode, and the target channel detection mode is one of channel detection modes indicated by the detection capability information. That is, the network device explicitly instructs the terminal to use the appropriate downlink channel sounding mode.

In one possible design, the method further includes: the terminal receives configuration information sent by the network device, the configuration information is used for configuring reference signal resources required by a target channel detection mode for the terminal, the configuration information is also used for enabling the terminal to determine the target channel detection mode, and the target channel detection mode is one of channel detection modes indicated by the detection capability information. That is, the network device implicitly instructs the terminal to use the appropriate downlink channel sounding mode.

In one possible design, the method further includes: if the terminal uses the third detection mode to detect the downlink channel, the terminal sends downlink channel information to the network equipment; wherein, the downlink channel information comprises: the characteristic values and the characteristic vectors corresponding to the N first matrixes are obtained, the first matrixes are equal to conjugate transpose vectors of second channel vectors multiplied by the second channel vectors, the second channel vectors are determined by dividing the first channel vectors by elements at preset positions in a downlink channel matrix, the first channel vectors are row vectors in the downlink channel matrix, and N is an integer greater than or equal to 1; or, the downlink channel information includes: the power phase difference parameter and N third channel vectors, the third channel vector is determined by dividing the second channel vector by the power phase difference parameter, the second channel vector is determined by dividing the first channel vector by an element at a preset position in the downlink channel matrix, and the power phase difference parameter is one element in the N second channel vectors. Therefore, the network equipment can accurately reconstruct the downlink channel according to the downlink channel information, and the influence of different power gains between the terminal and the network equipment is avoided.

In a second aspect, a method for configuring channel sounding is provided, including: the network equipment receives detection capability information sent by a terminal, wherein the detection capability information is used for indicating a channel detection mode supported by the terminal; and then, the network equipment determines the channel detection mode supported by the terminal according to the detection capability information. Therefore, the network equipment can be prevented from wrongly configuring the reference signal resource for downlink channel detection by the terminal.

In one possible design, the method further includes: the network equipment sends indication information to the terminal, wherein the indication information is used for indicating a target channel detection mode, and the target channel detection mode is one of channel detection modes indicated by the detection capability information. That is, the network device explicitly instructs the terminal to use the appropriate downlink channel sounding mode.

In one possible design, the method further includes: the network device sends configuration information to the terminal, wherein the configuration information is used for configuring reference signal resources required by a target channel detection mode for the terminal, and the configuration information is also used for enabling the terminal to determine the target channel detection mode, and the target channel detection mode is one of the channel detection modes indicated by the detection capability information. That is, the network device implicitly instructs the terminal to use the appropriate downlink channel sounding mode.

In one possible design, the method further includes: and the network equipment receives the downlink channel information sent by the terminal. Wherein, the downlink channel information comprises: the characteristic values and the characteristic vectors corresponding to the N first matrixes are obtained, the first matrixes are equal to conjugate transpose vectors of second channel vectors multiplied by the second channel vectors, the second channel vectors are determined by dividing the first channel vectors by elements at preset positions in a downlink channel matrix, the first channel vectors are row vectors in the downlink channel matrix, and N is an integer greater than or equal to 1; or, the downlink channel information includes: the power phase difference parameter and N third channel vectors, the third channel vector is determined by dividing the second channel vector by the power phase difference parameter, the second channel vector is determined by dividing the first channel vector by an element at a preset position in a downlink channel matrix, the first channel vector is a row vector in the downlink channel matrix, and the power phase difference parameter is one element in the N second channel vectors. Therefore, the network equipment can accurately reconstruct the downlink channel according to the downlink channel information, and the influence of different power gains between the terminal and the network equipment is avoided.

In a third aspect, a terminal is provided, including: and the processing module is used for generating detection capability information, and the detection capability information is used for indicating the channel detection mode supported by the terminal. And the communication module is used for sending the detection capability information to the network equipment.

In a possible design, the communication module is further configured to receive indication information sent by the network device, where the indication information is used to indicate a target channel detection mode, and the target channel detection mode is one of channel detection modes indicated by the detection capability information.

In a possible design, the communication module is further configured to receive configuration information sent by the network device, where the configuration information is used to configure, for the terminal, reference signal resources required by a target channel sounding mode, and the configuration information is further used to enable the terminal to determine the target channel sounding mode, where the target channel sounding mode is one of channel sounding modes indicated by the sounding capability information.

In one possible design, the communication module is further configured to send downlink channel information to the network device if the terminal performs downlink channel detection using the third detection mode; wherein, the downlink channel information comprises: the characteristic values and the characteristic vectors corresponding to the N first matrixes are obtained, the first matrixes are equal to conjugate transpose vectors of second channel vectors multiplied by the second channel vectors, the second channel vectors are determined by dividing the first channel vectors by elements at preset positions in a downlink channel matrix, the first channel vectors are row vectors in the downlink channel matrix, and N is an integer greater than or equal to 1; or, the downlink channel information includes: the power phase difference parameter and N third channel vectors, the third channel vector is determined by dividing the second channel vector by the power phase difference parameter, the second channel vector is determined by dividing the first channel vector by an element at a preset position in the downlink channel matrix, and the power phase difference parameter is one element in the N second channel vectors.

In a fourth aspect, a terminal is provided, including: a processor, configured to couple with the memory, read instructions in the memory, and implement the configuration method of channel sounding as described in any one of the above first aspects according to the instructions.

In a fifth aspect, a communication device is provided, configured to perform the channel sounding configuration method according to any one of the above first aspects. As a possible product form, the communication device is implemented by a processor and a communication interface. As another possible product form, the communication device is implemented by a logic circuit, an input interface, and an output interface.

A sixth aspect provides a computer-readable storage medium, which stores instructions that, when executed on a terminal, enable the terminal to perform the method for configuring channel sounding according to any one of the above first aspects.

In a seventh aspect, a computer program product containing instructions is provided, which when run on a terminal, enables the terminal to perform the configuration method for channel sounding according to any one of the above first aspects.

In an eighth aspect, a chip system is provided, where the chip system includes a processor configured to support a terminal to implement the functions recited in the first aspect. The processor may be a dedicated processor or a general-purpose processor. In one possible design, the system-on-chip includes a memory for storing program instructions and data necessary for the terminal. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

For technical effects brought by any one of the design manners in the third aspect to the eighth aspect, reference may be made to technical effects brought by different design manners in the first aspect, and details are not described here.

In a ninth aspect, there is provided a network device comprising: the communication module is used for receiving detection capability information sent by a terminal, wherein the detection capability information is used for indicating a channel detection mode supported by the terminal. And the processing module is used for determining the channel detection mode supported by the terminal according to the detection capability information.

In a possible design, the communication module is further configured to send indication information to the terminal, where the indication information is used to indicate a target channel sounding mode, and the target channel sounding mode is one of channel sounding modes indicated by the sounding capability information.

In a possible design, the communication module is further configured to send configuration information to the terminal, where the configuration information is used to configure, for the terminal, reference signal resources required by a target channel sounding mode, and the configuration information is further used to enable the terminal to determine the target channel sounding mode, where the target channel sounding mode is one of channel sounding modes indicated by the sounding capability information.

In one possible design, the communication module is further configured to receive downlink channel information sent by the terminal. Wherein, the downlink channel information comprises: the characteristic values and the characteristic vectors corresponding to the N first matrixes are obtained, the first matrixes are equal to conjugate transpose vectors of second channel vectors multiplied by the second channel vectors, the second channel vectors are determined by dividing the first channel vectors by elements at preset positions in a downlink channel matrix, the first channel vectors are row vectors in the downlink channel matrix, and N is an integer greater than or equal to 1; or, the downlink channel information includes: the power phase difference parameter and N third channel vectors, the third channel vector is determined by dividing the second channel vector by the power phase difference parameter, the second channel vector is determined by dividing the first channel vector by an element at a preset position in a downlink channel matrix, the first channel vector is a row vector in the downlink channel matrix, and the power phase difference parameter is one element in the N second channel vectors.

In a tenth aspect, there is provided a network device comprising: a processor, configured to couple with the memory, read the instructions in the memory, and implement the configuration method of channel sounding as described in any one of the second aspects above according to the instructions.

In an eleventh aspect, a communication device is provided, which is configured to perform the channel sounding configuration method according to any one of the second aspects. As a possible product form, the communication device is implemented by a processor and a communication interface. As another possible product form, the communication device is implemented by a logic circuit, an input interface, and an output interface.

In a twelfth aspect, a computer-readable storage medium is provided, where instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium is executed on a network device, the network device may execute the configuration method for channel sounding according to any one of the second aspects.

In a thirteenth aspect, there is provided a computer program product containing instructions that, when run on a network device, enable the network device to perform the method for configuring channel sounding according to any one of the second aspects.

In a fourteenth aspect, a chip system is provided, where the chip system includes a processor, and is configured to support a network device to implement the functions according to the second aspect. The processor may be a dedicated processor or a general-purpose processor. In one possible design, the system-on-chip includes a memory for storing program instructions and data necessary for the network device. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

The technical effects brought by any one of the design manners in the ninth aspect to the fourteenth aspect can be referred to the technical effects brought by different design manners in the second aspect, and are not described herein again.

In a fifteenth aspect, a communication system is provided that includes a network device and a terminal. The terminal is configured to perform the configuration method for channel sounding according to any of the above first aspects. The network device is configured to perform the channel sounding configuration method according to any one of the second aspects.

Drawings

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

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

fig. 3 is a first flowchart of a configuration method of channel sounding according to an embodiment of the present disclosure;

fig. 4 is a second flowchart of a configuration method of channel sounding according to an embodiment of the present application;

fig. 5 is a flowchart of a configuration method for channel sounding according to an embodiment of the present application;

fig. 6 is a fourth flowchart of a configuration method of channel sounding according to an embodiment of the present application;

fig. 7 is a flowchart of a method for reporting downlink channel information according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a terminal according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a network device according to an embodiment of the present application.

Detailed Description

For ease of understanding, some concepts related to the embodiments of the present application will be briefly described below.

(1) First detection mode

The first detection mode is a downlink channel detection mode based on codebook feedback only. In other words, the first detection mode is a downlink channel detection mode for acquiring all downlink channel information based on codebook feedback.

For example, the flow of the first detection mode is as follows: the network equipment configures downlink reference signal resources for the terminal; the terminal receives downlink reference signals from corresponding downlink reference signal resources, performs channel estimation on the downlink reference signals and determines a downlink channel matrix; then, the terminal determines a codeword matching the downlink channel matrix from the codebook, and sends a Precoding Matrix Indication (PMI) corresponding to the codeword to the network device.

The above is only a brief description of the first detection method, and does not limit the first detection method. For a specific implementation of the first detection mode, a person skilled in the art may refer to the prior art.

(2) Second detection mode

The second detection mode is a downlink channel detection mode based on channel reciprocity only. In other words, the second detection mode is a downlink channel detection mode for obtaining all downlink channel information based on channel reciprocity. The channel reciprocity refers to that an uplink channel and a downlink channel have consistent characteristics within a coherent time.

Compared with the first detection mode, the second detection mode can reduce the feedback overhead of the downlink channel information and can also avoid the error caused by quantization and feedback of the downlink channel information. That is, the second sounding reference can acquire more accurate downlink channel information when the channel condition is good.

For example, the flow of the second detection mode is as follows: the network equipment configures uplink reference signal resources for the terminal, and the terminal sends uplink reference signals on the corresponding uplink reference signal resources; the network equipment estimates an uplink channel according to the received downlink reference signal to obtain an uplink channel matrix; then, the network device transposes the uplink channel matrix into the downlink channel matrix in a non-conjugate manner based on the channel reciprocity.

It should be noted that the channel of a Multiple Input Multiple Output (MIMO) system can be described by a channel matrix of N1 × N2, where N1 represents the number of receiving antenna ports at the receiving end, and N2 represents the number of transmitting antenna ports at the transmitting end. If the second probing method is applied to the MIMO system, assuming that the number of receiving antenna ports of the terminal is N1 and the number of transmitting antenna ports of the network device is N2, the terminal transmits uplink reference signals through N1 transmitting antenna ports, and the network device receives the uplink reference signals through N2 receiving antenna ports, thereby determining an uplink channel matrix of N2 × N1. Then, the network device converts the uplink channel matrix of N2 × N1 into the downlink channel matrix of N1 × N2 in a non-conjugate manner based on channel reciprocity, so that the network device obtains complete downlink channel information.

However, the number of transmit antenna ports that the terminal can support is not necessarily equal to the number of receive antenna ports for product location and cost considerations. Typically, the number of transmit antenna ports supported by the terminal is less than the number of receive antenna ports. For example, the terminal has 2 receive antenna ports and 1 transmit antenna port. In this case, the terminal needs to have an antenna selection capability to support the second sounding mode. It is understood that the antenna selection capability refers to the capability of the communication device to switch the antenna port to different physical antennas through a physical switch to respectively transmit/receive signals. The communication equipment with the antenna selection capability can use fewer antenna ports, and the aim of measuring the channel information of more antenna ports is fulfilled. The antenna ports for switching different physical antennas in the antenna selection capability may be transmit antenna ports or receive antenna ports according to different specific scenarios and configurations. In the embodiment of the present application, the terminal has an antenna selection capability, which generally means that a transmitting antenna port of the terminal can switch to different physical antennas. For example, assuming that the number of transmit antenna ports of the terminal is 1 and the number of receive antenna ports is 2, the terminal transmits the uplink reference signal 2 times through the transmit antenna ports. Moreover, when transmitting the uplink reference signal each time, the transmitting antenna port needs to use a physical antenna that has not been used for transmitting the uplink reference signal in the current channel sounding. Thus, when the number of the transmitting antenna ports of the terminal is smaller than the number of the receiving antenna ports, the network device can also obtain the uplink channel information of 2 antenna ports, so that the network device can determine the complete downlink channel information.

The above is only a brief description of the second detection method, and does not limit the second detection method. For a specific implementation of the second detection mode, a person skilled in the art may refer to the prior art.

(3) Third detection mode

The third detection mode is a compromise between the second detection mode and the first detection mode. The third detection mode is a downlink channel detection mode combining channel reciprocity and codebook feedback. That is, the third sounding mode is to determine a part of downlink channel information based on channel reciprocity and determine another part of downlink channel information based on codebook feedback. The two parts of downlink channel information can be reconstructed into complete downlink channel information.

Compared with the first detection mode, the third detection mode can reduce the feedback overhead of part of downlink channel information and can also avoid the error of the part of downlink channel information caused by quantization and feedback. The third detection mode does not require the terminal to have antenna selection capability compared to the second detection mode.

The third sounding mode is described below by way of example, and it is assumed that the numbers of the transmitting antenna ports and the receiving antenna ports of the network device are both N2, the number of the transmitting antenna ports of the terminal is N3, and the number of the receiving antenna ports of the terminal is N1, where N1 > N3. On one hand, a part of downlink channel information is determined based on channel reciprocity, and specifically, a terminal sends uplink reference signals at N3 sending antenna ports; the network equipment carries out channel estimation on the uplink reference signal and determines an uplink channel matrix of N2 × N3; the network device switches the uplink channel matrix of N2 × N3 to the downlink channel matrix of N3 × N2 based on channel reciprocity. On the other hand, the other part of downlink channel information is determined based on codebook feedback, specifically, the terminal receives the downlink reference signal, estimates the downlink reference signal, determines the downlink channel matrix of (N1-N3) × N2, and feeds back the downlink channel matrix of (N1-N3) × N2 to the network device through the codebook. In this way, the network device may perform channel reconstruction based on the downlink channel matrix of N3 × N2 determined by channel reciprocity and the downlink channel matrix of (N1-N3) × N2 determined by codebook feedback to determine a complete downlink channel matrix.

The above is only a brief description of the third detection method, and does not limit the third detection method. For a specific implementation of the third detection mode, a person skilled in the art may refer to the prior art.

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

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

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

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

In the description of the present application, "indication" may include direct indication and indirect indication, and may also include explicit indication and implicit indication. If information indicated by certain information (such as the detection capability information described below) is referred to as information to be indicated, in a specific implementation process, there are many ways to indicate the information to be indicated, for example, but not limited to, directly indicating the information to be indicated, such as the information to be indicated itself or an index of the information to be indicated. The information to be indicated can also be indirectly indicated by indicating other information, wherein an association relationship exists between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other part of the information to be indicated is known or predetermined. For example, the indication of the specific information may be implemented by means of a predetermined arrangement order of the respective information (e.g., protocol specification), thereby reducing the indication overhead to some extent.

The technical solution provided in the embodiment of the present application may be applied to various communication systems, for example, an NR communication system that adopts a fifth generation (5th generation, 5G) communication technology, a future evolution system, or a multiple communication convergence system, and the like. The technical scheme provided by the application can be applied to various application scenarios, for example, scenarios such as machine-to-machine (M2M), macro-micro communication, enhanced mobile internet (eMBB), ultra-reliable and ultra-low latency communication (urlcc), and mass internet of things communication (mtc). These scenarios may include, but are not limited to: the communication scene between the terminals, the communication scene between the network equipment and the network equipment, the communication scene between the network equipment and the terminals and the like. The following description is given by way of example in the context of network device and terminal communication.

Fig. 1 is a schematic diagram of a communication system to which the technical solution provided by the embodiment of the present application is applied. As shown in fig. 1, the communication system may include one or more network devices 20 (only 1 shown) and one or more terminals 10 connected to each network device 20. Fig. 1 is a schematic diagram, and does not limit the application scenarios of the technical solutions provided in the present application.

Network device 20 may be a base station or base station controller or the like for wireless communications. For example, the base station may include various types of base stations, such as: a micro base station (also referred to as a small station), a macro base station, a relay station, an access point, and the like, which are not specifically limited in this embodiment of the present application. In this embodiment, the base station may be a base station (BTS) in a global system for mobile communication (GSM), a Code Division Multiple Access (CDMA), a base station (node B) in a Wideband Code Division Multiple Access (WCDMA), an evolved base station (evolved node B, eNB or e-NodeB) in LTE, an internet of things (IoT) or an eNB in a narrowband internet of things (NB-IoT), a future 5G mobile communication network or a base station in a future evolved Public Land Mobile Network (PLMN), which is not limited in this embodiment.

The terminal 10 is operative to provide voice and/or data connectivity services to a user. The terminal 10 may be referred to by different names such as User Equipment (UE), access terminal, terminal unit, terminal station, mobile station, remote terminal, mobile device, wireless communication device, terminal agent, or terminal device. Optionally, the terminal 10 may be various handheld devices, vehicle-mounted devices, wearable devices, and computers with communication functions, which is not limited in this embodiment of the present application. For example, the handheld device may be a smartphone. The in-vehicle device may be an in-vehicle navigation system. The wearable device may be a smart bracelet. The computer may be a Personal Digital Assistant (PDA) computer, tablet computer, and laptop computer (1ap computer).

Fig. 2 is a schematic diagram of hardware structures of the network device 20 and the terminal 10 according to an embodiment of the present application.

The terminal 10 includes at least one processor 101 and at least one transceiver 103. Optionally, the terminal 10 may also include an output device 104, an input device 105, and at least one memory 102.

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

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

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

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

The network device 20 includes at least one processor 201, at least one memory 202, at least one transceiver 203, and at least one network interface 204. The processor 201, memory 202, transceiver 203 and network interface 204 are connected by a bus. The network interface 204 is configured to connect with a core network device through a link (e.g., an S1 interface), or connect with a network interface of another network device through a wired or wireless link (e.g., an X2 interface) (not shown in the drawings), which is not specifically limited in this embodiment of the present invention. In addition, the description of the processor 201, the memory 202 and the transceiver 203 may refer to the description of the processor 101, the memory 102 and the transceiver 103 in the terminal 10, and will not be repeated herein.

As shown in fig. 3, a method for configuring channel sounding provided in the embodiment of the present application includes the following steps:

s101, the terminal generates detection capability information, and the detection capability information is used for indicating a channel detection mode supported by the terminal.

The channel detection mode comprises at least one of a downlink channel detection mode based on channel reciprocity and a downlink channel detection mode based on codebook feedback.

Alternatively, the channel detection scheme may include at least one of a first detection scheme, a second detection scheme, and a third detection scheme. The first detection mode is a downlink channel detection mode based on codebook feedback only. The second detection mode is a downlink channel detection mode based on channel reciprocity only. The third detection mode is a downlink channel detection mode combining channel reciprocity and codebook feedback.

It should be noted that, in the embodiment of the present application, a channel detection manner is not limited, that is, the channel detection manner is not limited to include a first detection manner, a second detection manner, and a third detection manner, and may also include other detection manners, for example, a channel detection manner based on an artificial intelligence algorithm, and for example, a channel detection manner based on a combination of an artificial intelligence algorithm and other manners.

In an optional implementation manner, the terminal actively generates the probe capability information, or the terminal generates the probe capability information after receiving a terminal capability query request sent by a network device.

It should be noted that the channel sounding method indicated by the sounding capability information may be all of the channel sounding methods actually supported by the terminal, or may be a part of the channel sounding methods actually supported by the terminal. For example, the terminal actually supports the second sounding mode, the third sounding mode, and the first sounding mode, but the sounding capability information generated by the terminal may only indicate that the terminal supports the second sounding mode and the third sounding mode. For another example, the terminal actually supports the second sounding reference and the third sounding reference, but the sounding capability information generated by the terminal may only indicate that the terminal supports the second sounding reference.

In the following, how the sounding capability information indicates the channel sounding type supported by the terminal is specifically described by taking the channel sounding type including the first sounding type, the second sounding type and the third sounding type as an example. It can be understood that, if the channel detection method further includes other detection methods, a person skilled in the art can reasonably derive a corresponding technical scheme according to the technical scheme provided in the embodiment of the present application.

As an implementation manner, the sounding capability information indicates, in an explicit manner, channel sounding manners supported by the terminal. In this case, the probe capability information includes at least one of the following cases:

in case one, the sounding capability information is represented by n bits, and the values of the n bits are used to indicate the channel sounding modes supported by the terminal. For example, the sounding capability information may be represented by three bits, "010" indicates that the terminal supports the first sounding reference, "000" indicates that the terminal supports the second sounding reference, "001" indicates that the terminal supports the third sounding reference, "100" indicates that the terminal supports the first sounding reference and the second sounding reference, "101" indicates that the terminal supports the first sounding reference and the third sounding reference, "011" indicates that the terminal supports the second sounding reference and the third sounding reference, and "110" indicates that the terminal supports the first sounding reference, the second sounding reference, and the third sounding reference.

Case two, the probing capability information includes at least one of the following parameters: information of the first detection mode, information of the second detection mode, and information of the third detection mode. The information of the first detection mode is an identifier, an index, a name and the like of the first detection mode. The information of the second detection mode may be an identifier, an index, a name, etc. of the second detection mode. The information of the third detection mode may be an identifier, an index, a name, etc. of the third detection mode.

It can be understood that, if the probing capability information is used to indicate that the terminal supports the first probing manner, the probing capability information includes information of the first probing manner. If the probing capability information is used to indicate that the terminal supports the second probing method, the probing capability information includes information of the second probing method. If the probing capability information is used to indicate that the terminal supports the third probing method, the probing capability information includes information of the third probing method. If the probing capability information is used to indicate that the terminal supports the first probing manner and the second probing manner, the probing capability information includes information of the first probing manner and information of the second probing manner. If the probing capability information is used to indicate that the terminal supports the second probing manner and the third probing manner, the probing capability information includes information of the second probing manner and information of the third probing manner. If the probing capability information is used to indicate that the terminal supports the first probing manner and the third probing manner, the probing capability information includes information of the first probing manner and information of the third probing manner. If the probing capability information is used to indicate that the terminal supports the first probing manner, the second probing manner, and the third probing manner, the probing capability information includes information of the first probing manner, information of the second probing manner, and information of the third probing manner.

In order to facilitate the understanding of the example described in the following case three by the person skilled in the art, the terms "first type detection mode" and "second type detection mode" referred to in case three are briefly described below.

The first detection mode and the second detection mode are two different types of channel detection modes, and the communication system can determine the first detection mode and the second detection mode according to a preset rule. For example, the communication system may divide the first detection mode into a first detection mode, and divide the second detection mode and the third detection mode into a second detection mode according to whether the communication system is based on channel reciprocity. It is understood that "whether to be based on channel reciprocity" is only one example of a preset rule, and the embodiments of the present application are not limited thereto.

In case that the probing capability information includes information of one or more first-type probing manners, the probing capability information is used to indicate that the terminal supports the corresponding one or more first-type probing manners. If the probing capability information does not include any information of the first type of probing manner, the probing capability information is used to indicate that the terminal supports the second type of probing manner.

Optionally, when the probing capability information does not include any information of the first type of probing manner, the probing capability information may include other indication information to indicate that the terminal does not support any one of the first type of probing manners but supports the second type of probing manner.

Any one or more of the channel sounding manners may be a second type of sounding manner. Correspondingly, the other detection modes except the second detection mode in the channel detection mode can be the first detection mode. Taking the channel detection mode comprising a first detection mode, a second detection mode and a third detection mode as an example, if the first detection mode is a second detection mode, the second detection mode and the third detection mode are both the first detection mode; and if the first detection mode and the third detection mode are the second detection mode, the second detection mode is the first detection mode.

Optionally, the second type of detection mode is a detection mode with a default protocol, that is, the second type of detection mode is a detection mode supported by a default system terminal when the terminal does not report the detection capability information.

For example, the second detection mode and the third detection mode are both the first type of detection mode, the first detection mode is the second type of detection mode, and if the detection capability information includes information of the second detection mode, the detection capability information is used to indicate that the terminal supports the second detection mode. If the probing capability information does not include the information of the second probing method and the information of the third probing method, but includes other indication information, for example, "neither is", the probing capability information is used to indicate that the terminal supports the first probing method.

It should be noted that the above-mentioned cases one to three are merely examples of the sounding capability information, and do not constitute a limitation on the sounding capability information.

As another implementation, the sounding capability information implicitly indicates the channel sounding modes supported by the terminal. That is, the sounding capability information includes parameters related to the channel sounding mode. Thus, the network device determines the channel detection mode supported by the terminal according to the parameters included in the detection capability information.

In this case, the probe capability information includes at least one of the following cases:

in case that the probing capability information includes the first parameter, the probing capability information is used to indicate that the terminal supports at least one of the second probing manner and the third probing manner. The first parameter is used to indicate that the terminal supports channel reciprocity, in other words, the first parameter is used to indicate that the terminal supports a downlink channel detection mode based on channel reciprocity

It will be appreciated that although channel reciprocity is an inherent feature of the channel. However, for future communication systems, in case of channel reciprocity, the capability of the terminal may need to meet certain requirements to allow the terminal to adopt a downlink channel sounding manner based on the channel reciprocity. Based on this consideration, the terminal needs to report the capability information (e.g., the first parameter) so that the network device knows whether the terminal can adopt a downlink channel sounding manner based on channel reciprocity.

It can be understood that the second detection mode and the third detection mode are based on channel reciprocity, and therefore, when the channel reciprocity is reported as a parameter, the network device may determine that the terminal supports the channel reciprocity, and further determine that the terminal supports at least one of the second detection mode and the third detection mode.

And in case five, the detection capability information comprises a first parameter and a second parameter. The second parameter is used to indicate antenna port information of the terminal, and specifically, the second parameter is used to indicate the number of transmit antenna ports and the number of receive antenna ports of the terminal. For example, the second parameter is 1T8R, indicating that the terminal has one transmit antenna port and eight receive antenna ports. For another example, the second parameter may be T ═ R ═ 8, which indicates that the transmitting antenna port and the receiving antenna port of the terminal are equal to each other and are both 8.

It can be understood that, if the number of transmitting antenna ports of the terminal is equal to the number of receiving antenna ports, the terminal may support the second sounding mode. If the number of the transmitting ports of the terminal is not equal to the number of the receiving antenna ports, the terminal does not necessarily support the second detection mode.

Therefore, if the number of transmit antenna ports indicated by the second parameter is equal to the number of receive antenna ports indicated by the second parameter, the sounding capability information is used to indicate that the terminal supports at least the second sounding mode.

If the number of the transmitting antenna ports indicated by the second parameter is not equal to the number of the receiving antenna ports indicated by the second parameter, the probing capability information is used for indicating that the terminal supports at least a third probing manner.

And in case six, the detection capability information comprises a first parameter, a second parameter and a third parameter. The third parameter is used for indicating the antenna port information of the terminal with the antenna selection capability. For example, the third parameter is 1T4R, which indicates that the terminal has 1 transmit antenna port and 4 receive antenna ports, and the 1 transmit antenna port can switch the physical antenna 4 times, that is, the terminal can complete uplink channel sounding of 4 antenna ports.

And if the antenna port information with the antenna selection capability indicated by the third parameter is consistent with the antenna port information of the terminal indicated by the second parameter, the detection capability information is used for indicating that the terminal at least supports the second detection mode. For example, if the third parameter included in the sounding capability information is 1T4R, and the second parameter is 1T4R, the transmitting antenna port configured by the terminal may switch to the physical antenna 4 times to complete uplink channel sounding of 4 antenna ports, and therefore, the sounding capability information is used to indicate that the terminal supports at least the second sounding mode.

If the antenna port information with the antenna selection capability indicated by the third parameter is inconsistent with the antenna port information of the terminal indicated by the second parameter, the probing capability information is used for indicating that the terminal supports the third probing manner, or the probing capability information is used for indicating that the terminal supports the third probing manner and the first probing manner. For example, if the third parameter included in the sounding capability information is 1T4R, and the second parameter is 1T8R, the transmitting antenna port of the terminal can only switch to 4 physical antennas, and uplink channel measurement of 4 antenna ports is completed, and the channel information of the remaining 4 antenna ports needs to be obtained by receiving downlink reference signal measurement.

Case seven, the detection capability information includes a first parameter, a second parameter, and a fourth parameter. The fourth parameter is used for indicating whether the terminal has the antenna selection capability. Illustratively, the fourth parameter is "support" to indicate that the terminal has antenna selection capability; the fourth parameter is "no support" to indicate that the terminal does not have antenna selection capability.

It can be understood that, if the fourth parameter indicates that the terminal has the antenna selection capability, it indicates that the terminal has the capability of performing antenna selection according to the antenna port information indicated by the second parameter. For example, the second parameter is 1T8R, and the fourth parameter is "support", the terminal has 1 transmit antenna port and 8 receive antenna ports, and meanwhile, the terminal may support antenna selection of 1T 8R.

And if the fourth parameter is used for indicating that the terminal has the antenna selection capability, the detection capability information is used for indicating that the terminal at least supports the second detection mode.

And if the number of the receiving antenna ports indicated by the second parameter is not equal to the number of the transmitting antenna ports indicated by the second parameter, the detection capability information is used for indicating that the terminal supports at least the second detection mode no matter how the fourth parameter takes a value.

It is to be understood that, in the case where the number of transmit antenna ports of the terminal is equal to the number of receive antenna ports, the sounding capability information may not include the fourth parameter.

If the fourth parameter is used to indicate that the terminal does not have the antenna selection capability, and the number of receiving antenna ports indicated by the second parameter is not equal to the number of transmitting antenna ports indicated by the second parameter, the probing capability information is used to indicate that the terminal supports the third probing manner, or the probing capability information is used to indicate that the terminal supports the first probing manner and the third probing manner.

And in case eight, if the probing capability information includes the fifth parameter, the probing capability information is used to indicate that the terminal supports the third probing manner. The fifth parameter is used to indicate that the terminal does not support channel reciprocity, in other words, the fifth parameter is used to indicate that the terminal does not support a downlink channel sounding mode based on channel reciprocity.

It should be noted that, for the fifth to seventh cases, if the channel reciprocity is an inherent attribute of the system, the terminal does not need to report the first parameter to indicate that the terminal supports the channel reciprocity. That is, in this case, the probe capability information does not include the first parameter.

It should be noted that, in case four, the probing capability information is used to indicate that the terminal supports at least one of the second probing manner and the third probing manner, including one of the following cases: (1.1) the detection capability information is used for indicating that the terminal supports the second detection mode; (1.2) the detection capability information is used for indicating that the terminal supports the third detection mode; (1.3) the detection capability information is used for indicating that the terminal supports a second detection mode and a third detection mode; (1.4) the detection capability information is used for indicating that the terminal supports a first detection mode and a second detection mode; (1.5) the detection capability information is used for indicating that the terminal supports the first detection mode and the third detection mode; and (1.6) the detection capability information is used for indicating that the terminal supports the first detection mode, the second detection mode and the third detection mode. It is understood that the network device and the terminal specifically select which of the above cases (1.1) to (1.6) is determined by the pre-configuration of the communication system or determined according to a protocol.

It should be noted that in cases five to seven, the probing capability information is used to indicate that the terminal supports at least the second probing manner, and includes one of the following cases: (2.1) the detection capability information is used for indicating that the terminal supports the second detection mode; (2.2) the detection capability information is used for indicating that the terminal supports a first detection mode and a second detection mode; (2.3) the detection capability information is used for indicating that the terminal supports the second detection mode and the third detection mode; and (2.4) the detection capability information is used for indicating that the terminal supports the first detection mode, the second detection mode and the third detection mode. It is understood that the network device and the terminal specifically select which of the above cases (2.1) to (2.4) is determined by the pre-configuration of the communication system or determined according to a protocol.

It should be noted that, in case six, the probing capability information is used to indicate that the terminal supports at least the third probing method, including one of the following cases: (3.1) the detection capability information is used for indicating that the terminal supports the third detection mode; (3.2) the detection capability information is used for indicating that the terminal supports the first detection mode and the third detection mode; (3.3) the detection capability information is used for indicating that the terminal supports the second detection mode and the third detection mode; and (3.4) the detection capability information is used for indicating that the terminal supports the first detection mode, the second detection mode and the third detection mode. It is understood that the network device and the terminal specifically select which of the above cases (3.1) to (3.4) is determined by the pre-configuration of the communication system or determined according to a protocol.

It is understood that the above cases four to five are only examples of the detection capability information and do not constitute any limitation. The first to fifth parameters are not necessarily included in the probe capability information, and may be independent capability information. The independent capability information can be used as a basis for the network equipment to determine the channel detection modes supported by the terminal.

S102, the terminal sends the detection capability information to the network equipment, so that the network equipment receives the detection capability information of the terminal.

In an optional implementation manner, the terminal actively sends the detection capability information to the network device; or after receiving a terminal capability query request sent by the network device, the terminal sends the probe capability information to the network device.

Alternatively, the terminal may report the probe capability information to the network device separately, or the terminal may report the probe capability information and other capability information to the network device together.

Exemplary, other capability information includes: access stratum version number, radio frequency parameters, physical layer parameters, and/or Packet Data Convergence Protocol (PDCP) parameters. Other capability information may refer to the prior art and is not described herein in detail.

S103, the network equipment determines a channel detection mode supported by the terminal according to the detection capability information.

Based on the technical scheme shown in fig. 3, the terminal reports the detection capability information so that the network device can acquire the channel detection mode supported by the terminal, and thus the network device can configure appropriate reference signal resources for the terminal to ensure the normal execution of the downlink channel detection process.

As shown in fig. 4, the method for configuring channel sounding further includes step S201.

S201, the network equipment configures reference signal resources for the terminal according to the channel detection mode indicated by the detection capability information.

If the probing capability information is used to indicate that the terminal only supports the second probing manner, the specific implementation manner of step S201 is: the network equipment configures at least one first reference signal resource set for the terminal, wherein the first reference signal resource set comprises at least one uplink reference signal resource. Optionally, the first reference signal resource set is a Sounding Reference Signal (SRS) resource set, and the uplink reference signal resource is an SRS resource.

If the probing capability information is used to indicate that the terminal only supports the first probing manner, the specific implementation manner of step S201 is: the network equipment configures at least one second reference signal resource set for the terminal, wherein the second reference signal resource set comprises at least one downlink reference signal resource. Optionally, the second reference signal resource set is a channel state information reference signal (CSI-RS) resource set, and the downlink reference signal resource is a CSI-RS resource.

If the probing capability information indicates that the terminal supports at least two different channel probing manners, or the probing capability information indicates that the terminal supports at least a third probing manner, the specific implementation manner of step S201 includes one of the following manners:

in a first mode, a network device sends first configuration information to a terminal, where the first configuration information includes an identifier of at least one first reference signal resource set and an identifier of at least one second reference signal resource set. Optionally, the first configuration information is carried in Radio Resource Control (RRC) signaling.

To illustrate the above manner one, assume that the system has configured SRS resource sets including SRS resource set #0, SRS resource set #1, SRS resource set # 2; the system has configured a set of CSI-RS resources including CSI-RS resource set #0, CSI-RS resource set #1, CSI-RS resource set #2, CSI-RS resource set #3, then the first configuration information includes an identification of a set of reference signal resources, e.g., { SRS resource set #0, SRS resource set #1, CSI-RS resource set #0 }. Alternatively, the first configuration information may include identities of multiple sets of reference signal resources, such as { SRS resource set #0, SRS resource set #1, CSI-RS resource set #0}, { SRS resource set #0, SRS resource set #1, CSI-RS resource set #2}, { SRS resource set #1, SRS resource set #2, CSI-RS resource set #3 }.

It should be noted that, the first method has an advantage that the reference signal resource sets respectively configured for uplink and downlink channel measurement by the system can be directly multiplexed, and a third reference signal resource set does not need to be configured separately, thereby reducing signaling overhead.

In addition, in a case where the first configuration information is used to configure a set of reference signal resource sets, the network device may activate or trigger the terminal to use one or more reference signal resource sets of the set of reference signal resource sets through Media Access Control (MAC) -Control Element (CE) signaling or Downlink Control Information (DCI).

In the case that the first configuration information is used to configure multiple sets of reference signal resources, the network device may be activated through MAC-CE signaling or the DCI triggers the terminal to use one of the multiple sets of reference signal resources.

And secondly, the network equipment configures at least one third reference signal resource set for the terminal, wherein the third reference signal resource set comprises at least one uplink reference signal resource and at least one downlink reference signal resource.

Optionally, the reference signal resources in the third set of reference signal resources may be arranged as follows: (1) the reference signal resources are arranged from small to large according to the sequence numbers. If the serial numbers of the uplink reference signal resources and the downlink reference signal resources are the same, the uplink reference signal resources are arranged in front of the downlink reference signal resources or the uplink reference signal resources are arranged behind the downlink reference signal resources. Illustratively, the third set of reference signal resources is { SRS resource #1, CSI-RS resource #1, SRS resource #2, CSI-RS resource #2, SRS resource #3, CSI-RS resource #4 }. (2) The reference signal resources of the same type are arranged in sequence from small to large according to the sequence number, and each reference signal resource has an identifier for indicating its category. Illustratively, the third set of reference signal resources is { SRS resource: #1, #2, #3, CSI-RS resource: #1, #2, #3, #4 }. (3) The sequence numbers of the reference signal resources of the same type are continuous, and the sequence numbers of the reference signal resources of different types are discontinuous. In addition, the protocol may also specify: in the third set of reference signal resources, the uplink reference signal resources are arranged before the downlink reference signal resources or the uplink reference signal resources are arranged after the downlink reference signal resources. Illustratively, assume that the protocol specifies that the CSI-RS is arranged before the SRS, and the third set of reference signal resources is { #1, #2, #3, #5, #6, #7, #8 }. It is to be understood that in the third set of reference signal resources, #1, #2, #3 are serial numbers of CSI-RS resources, and #5, #6, #7, #8 are serial numbers of SRS resources.

In the embodiment of the present application, the CSI-RS may be a non-zero power (NZP) -CSI-RS, or other forms of CSI-RS, such as a Zero Power (ZP) -CSI-RS, which is not limited in the embodiment of the present application.

Wherein the third set of reference signal resources may multiplex the set of SRS resources. In this case, the configuration process of the third reference signal resource set may refer to the configuration process of the current SRS resource set, and the trigger process of the third reference signal resource set may also refer to the trigger process of the current SRS resource set, which is not described herein again. In addition, it should be noted that, unlike the current SRS resource set, the current SRS resource set does not include information of downlink reference signal resources, such as CSI-RS resource identifiers, and the SRS resource set multiplexed as the third reference signal resource set includes information of downlink reference signal resources. Optionally, in an implementation, the protocol may agree on an identity of one or more specific SRS resource sets as an identity of the third reference signal resource set. Illustratively, the identity of a particular set of SRS resources may be the minimum identity allowed by the protocol (e.g., #0), or the maximum identity allowed by the protocol. In another implementation manner, an indication field is added to the configuration information of the SRS resource set, where the indication field is used to indicate whether the SRS resource set configured by the configuration information of the SRS resource set is multiplexed as a third reference signal resource set.

Alternatively, the third set of reference signal resources may multiplex the set of CSI-RS resources. In this case, the configuration process of the third reference signal resource set may refer to the configuration process of the current CSI-RS resource set, and the trigger process of the third reference signal resource set may also refer to the trigger process of the current CSI-RS resource set, which is not described herein again. In addition, it should be noted that, different from the current CSI-RS resource set, the current CSI-RS resource set does not include information of the uplink reference signal resource, such as an SRS resource identifier, and the CSI-RS resource set multiplexed as the third reference signal resource set includes information of the uplink reference signal resource. Optionally, in an implementation, the protocol may agree on an identity of one or more specific CSI-RS resource sets as an identity of the third set of reference signal resources. For example, the identity of a specific CSI-RS resource set may be the minimum identity allowed by the protocol (e.g., #0), or the maximum identity allowed by the protocol. In another implementation, an indication field is added to the configuration information of the CSI-RS resource set to indicate whether the CSI-RS resource set configured by the configuration information of the CSI-RS resource set is multiplexed as a third reference signal resource set.

Still alternatively, the third set of reference signal resources may be a newly defined set of reference signal resources. In this case, the configuration procedure of the third reference signal resource set is as follows: and the network equipment sends second configuration information to the terminal, wherein the second configuration information at least comprises an identifier of the third reference signal resource set, identifiers of one or more uplink reference signal resources and identifiers of one or more downlink reference signal resources. Optionally, the second configuration information is carried in an RRC signaling. The triggering process of the third reference signal resource set is as follows: and the network equipment sends first trigger information to the terminal, wherein the first trigger information is used for activating uplink reference signal resources and downlink reference signal resources in a third reference signal resource set. Or, the network device sends second trigger information and/or third trigger information to the terminal, where the second trigger information is used to activate an uplink reference signal resource in a third reference signal resource set, and the third trigger information is used to activate a downlink reference signal resource in the third reference signal resource set. It should be noted that the first trigger information, the second trigger information, and the third trigger information may be carried in MAC-CE signaling or DCI. Optionally, the second trigger information may multiplex a triggering manner of the SRS resource. The third trigger information may multiplex a trigger manner of the CSI-RS resource.

Optionally, after the network device configures, for the terminal, the reference signal resource required by each channel sounding mode indicated by the sounding capability information, the network device may indicate, in an explicit manner, the channel sounding mode used by the terminal in the downlink channel sounding process. As shown in fig. 5, the method for configuring channel sounding shown in fig. 4 further includes step S301.

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

The indication information is used for indicating a target channel detection mode. The target channel detection mode is one of the channel detection modes indicated by the detection capability information. It can be understood that the target channel detection mode is a channel detection mode used by the terminal in the downlink channel detection process.

Optionally, the indication information includes information of a target channel sounding mode. For example, the probing capability information indicates that the terminal supports the second probing manner and the third probing manner, and the indication information may include information of the second probing manner to indicate that the target channel probing manner is the second probing manner; alternatively, the indication information may include information of a third sounding mode, so as to indicate that the target channel sounding mode is the third sounding mode. For another example, if the probing capability information indicates that the terminal supports the second probing method, the indication information includes information of the second probing method to indicate that the target channel probing method is the second probing method.

Optionally, the indication information is represented by n bits, for example, the indication information is represented by 2 bits, where "00" indicates that the target channel sounding manner is the second sounding manner, "01" indicates that the target channel sounding manner is the third sounding manner, and "10" indicates that the target channel sounding manner is the first sounding manner.

It should be noted that the indication information may be carried in RRC signaling, MAC-CE signaling, or DCI.

Optionally, in a case that the probing capability information indicates that the terminal supports only one channel probing manner, the network device may not send the indication information to the terminal, so as to reduce signaling overhead. At this time, the target channel sounding mode is the channel sounding mode indicated by the sounding capability information. For example, the probing capability information indicates that the terminal supports the first probing method, and at this time, the target channel probing method is the first probing method.

In this way, the terminal can perform channel detection in a target channel detection manner according to the indication of the network device.

In addition, as described with reference to step S201, in the case that the network device explicitly indicates the target sounding mode, the reference signal resource configured by the network device for the terminal may be more than the reference signal resource required for actual channel sounding.

In addition, if the number of reference signal resources configured for the terminal by the network device is greater than the number of reference signal resources required by the actual channel, the terminal may select the corresponding reference signal resource according to a preset rule. For example, the preset rules include: and selecting the corresponding reference signal resources from the reference signal resource set according to the sequence number from small to large. The above is only an example of the preset rule, and the embodiment of the present application is not limited in this respect.

For example, assuming that the antenna port information of the terminal is 2T4R and the terminal does not have the antenna selection capability, the network device sends the first configuration information to the terminal to configure the reference signal resource for the terminal. The CSI-RS resource set associated with the first configuration information comprises 4 CSI-RS resources of 2 ports, for example, CSI-RS resource #0 to CSI-RS resource set # 3; the SRS resource set associated with the first configuration information includes 4 SRS resources of 2 ports, for example, SRS resource #0 to SRS resource # 3. In this case, if the terminal receives the indication information indicating that the target detection mode is the third detection mode, the terminal selects CSI-RS resource #0 to perform downlink channel measurement according to antenna port information 2T4R of the terminal, and feeds back downlink channel information of 2 ports; meanwhile, the terminal selects an SRS resource #0 to transmit an uplink reference signal, so that the network equipment determines downlink channel information of another 2 ports based on channel reciprocity.

For another example, assuming that the antenna port information of the terminal is 2T4R and the terminal does not have the antenna selection capability, the network device sends the first configuration information to the terminal to configure the reference signal resource for the terminal. The CSI-RS resource set associated with the first configuration information comprises 4 CSI-RS resources of 2 ports, for example, CSI-RS resource #0 to CSI-RS resource set # 3; the SRS resource set associated with the first configuration information includes 4 SRS resources of 1port, for example, SRS resource #0 to SRS resource # 3. In this case, if the terminal receives the indication information indicating that the target detection mode is the third detection mode, the terminal selects CSI-RS resource #0 to perform downlink channel measurement according to antenna port information 2T4R of the terminal, and feeds back downlink channel information of 2 ports; meanwhile, the terminal selects the SRS resource #0 and the SRS resource #1 to transmit the uplink reference signal, so that the network equipment determines downlink channel information of another 2 ports based on channel reciprocity. If the terminal receives the indication information, the indication information indicates that the target detection mode is the first detection mode, the terminal selects the CSI-RS resource #0 and the CSI-RS resource #1 to perform downlink channel detection, and feeds back 4-port downlink channel information.

Or, the network device indicates the channel detection mode used by the terminal in the channel detection process in an implicit mode. As shown in fig. 6, the method for configuring channel sounding shown in fig. 3 further includes step S401.

S401, the network equipment configures reference signal resources required by a target channel detection mode for the terminal to indicate the terminal to use the target channel detection mode to perform downlink channel detection.

The target channel detection mode is one of the channel detection modes indicated by the detection capability information. In other words, the target channel sounding mode is a channel sounding mode used by the terminal in the channel sounding process.

As an implementation manner, the network device sends third configuration information to the terminal, where the third configuration information is used to configure reference signal resources required by the target channel sounding manner for the terminal, and the third configuration information is also used to enable the terminal to determine the target channel sounding manner.

And if the target channel detection mode is the second detection mode, the network equipment configures one or more uplink reference signal resources for the terminal. If the target channel detection mode is the third detection mode, the network device configures one or more uplink reference signal resources and one or more downlink reference signal resources for the terminal. If the target channel detection mode is the first detection mode, the network equipment configures one or more downlink reference signal resources for the terminal.

Optionally, the number of reference signal resources configured for the terminal by the network device is equal to the number of reference signal resources required for actual channel sounding. That is, the terminal may determine the target channel sounding manner according to the type and number of the reference signal resources configured for the terminal by the network device. And then, the terminal performs downlink channel detection by using a target channel detection mode.

For example, assume that the antenna port information of the terminal is 1T8R, and the antenna port information of the terminal with antenna selection capability is 1T 4R. If the network device indicates the terminal to perform downlink channel sounding by using a third sounding manner, the network device may configure a third reference signal resource set for the terminal, where the third reference signal resource set includes 4 SRS resources of 1port and 1 CSI-RS resource of 4 ports. In this way, the terminal can determine that the target channel detection method is the third detection method according to the reference signal resource set, so that the terminal performs downlink channel detection by using the third detection method.

For example, assume that the antenna port information of the terminal is 2T 2R. If the network device instructs the terminal to perform downlink channel sounding by using the first sounding mode, the network device may configure 1 CSI-RS resource with 2 ports for the terminal. Or, if the network device instructs the terminal to perform downlink channel sounding by using the second sounding method, the network device may configure 1 SRS resource with 2 ports for the terminal. Or, if the terminal has the antenna selection capability and the network device instructs the terminal to perform downlink channel sounding by using the second sounding method, the network device may configure 2 SRS resources of 1port for the terminal.

It should be noted that whether the network device adopts the technical solution shown in fig. 5 or the solution shown in fig. 6 is determined by the communication system pre-configuration, or defined in the standard, or determined after the network device and the terminal negotiate.

For the third sounding mode, a part of the downlink channel information is determined based on the measured uplink reference signal, and another part of the downlink channel information is determined based on the measured downlink reference signal. (for convenience of description, the downlink channel information determined based on the measured uplink reference signal is hereinafter simply referred to as first downlink channel information, and the downlink channel information determined based on the measured downlink reference signal is hereinafter simply referred to as second downlink channel information). Because the power of the network device for sending the downlink reference signal and the power of the terminal for sending the uplink reference signal may be different, the first downlink channel information and the second downlink channel information have a deviation in power gain, and thus the accuracy of the downlink channel reconstructed by the network device according to the first downlink channel information and the second downlink channel information may be affected.

In order to solve the above technical problem, in the process of performing downlink channel detection by the terminal using the third detection method, the terminal may report the downlink channel information by using the method shown in fig. 7. As shown in fig. 7, the method includes:

s501, the terminal performs channel estimation on the downlink reference signal and determines a downlink channel matrix.

Step S501 may refer to the prior art, and is not described herein again.

S502, the terminal processes the downlink channel matrix and determines the downlink channel information.

Wherein the downlink channel information includes: the first matrix is equal to a conjugate transpose vector of a second channel vector multiplied by the second channel vector, the second channel vector is determined by dividing the first channel vector by an element at a preset position in a downlink channel matrix, the first channel vector is a row vector in the downlink channel matrix, and N is an integer greater than or equal to 1.

Or, the downlink channel information includes: the power phase difference parameter and N third channel vectors, the third channel vector is determined by dividing the second channel vector by the power phase difference parameter, the second channel vector is determined by dividing the first channel vector by an element at a preset position in a downlink channel matrix, the first channel vector is a row vector in the downlink channel matrix, and the power phase difference parameter is one element in the N second channel vectors.

It is understood that the downlink channel matrix includes M column vectors, M being greater than or equal to N.

First, a brief description will be given to the processing idea of the first downlink channel matrix.

Suppose that the downlink channel matrix determined by the second detection method is

The downlink channel matrix determined by the first detection mode is

Where n is the number of receive antenna ports and m is the number of transmit antenna ports.

To H_srsIs subjected to a treatment, e.g. from H_srsExtract an element (e.g., h)₁₁) Determining H'_srs，H′_srsNo longer affected by the power gain of the terminal and the network device.

In an exemplary manner, the first and second electrodes are,

likewise, for G_csi-rsPerforming treatment, e.g. from G_csi-rsIs extracted with H_srsExtracted ofAn element in the same position as the element (e.g., H)_srsThe extracted element is h₁₁Then G is_csi-rsThe extracted element is g₁₁) Determining G'_csi-rs，G′_csi-rsNo longer affected by the power gain of the terminal and the network device.

In an exemplary manner, the first and second electrodes are,

thus, [ g'_n1 g′_n1...g′_nm]＝[h′_n1 h′_n2...h′_nm]。

Under the condition of adopting the third detection mode, the channel vector determined based on the channel reciprocity is H₁、……、H_jThe channel vector determined based on codebook feedback is G_j+1、……、G_n. Wherein j is less than n. In this case, the network device performs channel reconfiguration in H'₁、……、H′_jAnd G'_j+1、……、G′_nA matrix that is not affected by the power gain can be determined:

wherein the content of the first and second substances,

is H'₁The conjugate of the transposed vector of (a),

is that

The conjugate of the transposed vector of (a),

is G'_j+1The conjugate of the transposed vector of (a),

is G'_nThe conjugate of (2) transposes the vector.

Therefore, under the condition of adopting the third detection mode, the terminal actually needs to report

Example one, reporting with a terminal

For example, a terminal pair

And decomposing the characteristic value, and determining U AU, so that the terminal reports the characteristic vector U and the characteristic value to the network equipment. Wherein, U^*The vector is transposed for the conjugate of the feature vector U. Λ is a diagonal matrix whose elements on the diagonal are the corresponding eigenvalues.

Example two, report G 'with terminal'_nFor example, the terminal reports G 'to the network equipment'_nOne element of (e.g. g'_n1) And G 'from which the element is extracted'_n. For example, the terminal reports g 'to the network equipment'_n1And an

As one implementation, step S501 includes the following steps: (1) and dividing N first channel vectors to be fed back in the downlink channel matrix by elements at preset positions in the downlink channel matrix to determine N second channel vectors. It can be understood that the N first channel vectors to be fed back are G in the above analysis_j+1、……、G_nN secondary channel vectors are G 'in the analysis'_j+1、……、G′_n. (2) For each second channel vector, eigenvalue decomposition is performed on the first matrix to determine corresponding eigenvalues and eigenvectors. The first matrix is equal to the conjugate transpose vector of the second channel vector multiplied by the second channel vectorA track vector. Thus, the downlink channel information includes: and the eigenvalues and eigenvectors corresponding to the N first matrixes.

It will be appreciated that the preset position is defined by a protocol or is pre-configured by the communication system.

As another implementation, step S501 includes the following steps: (1) and dividing N first channel vectors to be fed back in the downlink channel matrix by elements at preset positions in the downlink channel matrix to determine N second channel vectors. (2) For the N second channel vectors, the N second channel vectors are divided by the power phase parameter to determine N corresponding third channel vectors. Wherein the power phase difference parameter may be one element of the N second channel vectors. Thus, the downlink channel information includes: a power phase difference parameter, and N third channel vectors.

It is to be understood that the position of the power phase difference parameter in the N second channel vectors is protocol specified or pre-configured by the communication system. For example, the power phase difference parameter may be a first element of a first one of the N second channel vectors.

Optionally, if the positions of the power phase difference parameters in the N second channel vectors are not predefined, the downlink channel information may further include: position information indicating a position of the power phase difference parameter in the N second channel vectors.

S503, the terminal sends the downlink channel information to the network device, so that the network device receives the downlink channel information.

Therefore, the network equipment can reconstruct a more accurate channel based on the downlink channel information reported by the terminal, and the influence of different power gains between the terminal and the network equipment is avoided.

The above-mentioned scheme provided by the embodiment of the present application is mainly introduced from the perspective of interaction between each network element. It will be understood that each network element, such as the network device and the terminal, for implementing the above-described functions, includes corresponding hardware structures and/or software modules for performing each function. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

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

fig. 8 is a schematic structural diagram of a terminal according to an embodiment of the present application. As shown in fig. 8, the terminal includes: a processing module 301 and a communication module 302. Wherein, the processing module 301 is configured to support the terminal to execute step S101 in fig. 3, steps S501 and S502 in fig. 7, and/or other processes for the technical solutions described herein. The communication module 302 is configured to support the terminal to perform step S102 in fig. 3, step S201 in fig. 4, step S301 in fig. 5, step S401 in fig. 6, step S503 in fig. 7, and/or other processes for the technical solutions described herein. All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

As an example, in conjunction with the terminal shown in fig. 2, the communication module 302 in fig. 8 may be implemented by the transceiver 103 in fig. 2, and the processing module 301 in fig. 8 may be implemented by the processor 101 in fig. 2, which is not limited in this embodiment.

The embodiment of the present application further provides a communication apparatus for executing the method shown in fig. 3-7. As a possible product form, the communication device is implemented by a processor and a communication interface. As another possible product form, the communication device is implemented by a logic circuit, an input interface, and an output interface.

The embodiment of the application also provides a computer readable storage medium, wherein the computer readable storage medium stores computer instructions; the computer-readable storage medium, when run on the terminal shown in fig. 2, causes the terminal to perform the methods shown in fig. 3-7. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or can comprise one or more data storage devices, such as a server, a data center, etc., that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium, or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

An embodiment of the present application further provides a chip system, where the chip system includes a processor, and is used to support a terminal to implement the method shown in fig. 3 to 7. In the embodiment of the present application, the processor may be a dedicated processor or a general-purpose processor. In one possible design, the system-on-chip further includes a memory. The memory is used for storing program instructions and data necessary for the terminal. Of course, the memory may not be in the system-on-chip. The chip system may be formed by a chip, and may also include a chip and other discrete devices, which is not specifically limited in this embodiment of the present application.

Embodiments of the present application also provide a computer program product containing computer instructions, which when run on the terminal shown in fig. 2, enable the terminal to perform the methods shown in fig. 3-7.

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

Fig. 9 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in fig. 9, the network device includes: a communication module 401 and a processing module 402. Among other things, the communication module 401 is used to support the network device to execute step S102 in fig. 3, step S201 in fig. 4, step S301 in fig. 5, step S503 in fig. 7, and/or other processes for the technical solutions described herein. The processing module 402 is used to support the network device to perform step S103 in fig. 3, and/or other processes for the technical solutions described herein. All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

As an example, in conjunction with the network device shown in fig. 2, the communication module 401 in fig. 9 may be implemented by the transceiver 203 in fig. 2, and the processing module 402 in fig. 9 may be implemented by the processor 201 in fig. 2, which is not limited in this embodiment.

An embodiment of the present application further provides a computer-readable storage medium, in which instructions are stored; the computer readable storage medium, when run on the network device shown in fig. 2, causes the network device to perform the methods shown in fig. 3-7.

Embodiments of the present application further provide a chip system, where the chip system includes a processor, and is configured to support a network device to implement the methods shown in fig. 3 to 7. In the embodiment of the present application, the processor may be a dedicated processor or a general-purpose processor. In one possible design, the system-on-chip further includes a memory. The memory is used for storing program instructions and data necessary for the network device. Of course, the memory may not be in the system-on-chip. The chip system may be formed by a chip, and may also include a chip and other discrete devices, which is not specifically limited in this embodiment of the present application.

Embodiments of the present application also provide a computer program product containing computer instructions, which when run on the network device shown in fig. 2, enable the network device to perform the methods shown in fig. 3-7.

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

Embodiments of the present application further provide a communication system, which includes a terminal and a network device, where the network device and the terminal are configured to execute the methods shown in fig. 3 to 7.

While the present application has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

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

Claims

1. A method for configuring channel sounding, the method comprising:

a terminal generates detection capability information, wherein the detection capability information is used for indicating a channel detection mode supported by the terminal;

the terminal sends the detection capability information to network equipment;

the method further comprises the following steps:

the terminal receives indication information sent by the network equipment, wherein the indication information is used for indicating a target channel detection mode, and the target channel detection mode is one of the channel detection modes indicated by the detection capability information; alternatively, the first and second electrodes may be,

the terminal receives configuration information sent by the network device, where the configuration information is used to configure reference signal resources required by a target channel detection mode for the terminal, and the configuration information is also used to enable the terminal to determine the target channel detection mode, where the target channel detection mode is one of the channel detection modes indicated by the detection capability information.

2. The method according to claim 1, wherein the channel sounding mode comprises at least one of a downlink channel sounding mode based on channel reciprocity and a downlink channel sounding mode based on codebook feedback.

3. The method according to claim 2, wherein the channel sounding mode includes at least one of a first sounding mode, a second sounding mode, and a third sounding mode;

the first detection mode is a downlink channel detection mode based on codebook feedback only; the second detection mode is a downlink channel detection mode based on channel reciprocity only; the third detection mode is a downlink channel detection mode combining channel reciprocity and codebook feedback.

4. The method according to claim 3, wherein if the probing capability information includes a first parameter, the probing capability information is used to indicate that the terminal supports at least one of the second probing manner and the third probing manner; wherein the first parameter is used for indicating that the terminal supports channel reciprocity.

5. The method according to claim 3 or 4, wherein the probing capability information includes a second parameter, the second parameter is used to indicate antenna port information of the terminal, and the antenna port information of the terminal includes the number of transmitting antenna ports and the number of receiving antenna ports;

if the number of transmitting antenna ports indicated by the second parameter is equal to the number of receiving antenna ports indicated by the second parameter, the probing capability information is used to indicate that the terminal supports at least the second probing manner;

if the number of transmit antenna ports indicated by the second parameter is not equal to the number of receive antenna ports indicated by the second parameter, the sounding capability information is used to indicate that the terminal supports at least the third sounding mode.

6. The method according to claim 3 or 4, wherein the probing capability information comprises a second parameter and a third parameter; the second parameter is used for indicating the antenna port information of the terminal, and the third parameter is used for indicating the antenna port information of the terminal with antenna selection capability;

if the antenna port information with the antenna selection capability indicated by the third parameter is the same as the antenna port information indicated by the second parameter, the probing capability information is used for indicating that the terminal at least supports the second probing manner;

if the antenna port information with the antenna selection capability indicated by the third parameter is different from the antenna port information indicated by the second parameter, the probing capability information is used to indicate that the terminal supports the third probing manner, or the probing capability information is used to indicate that the terminal supports the third probing manner and the first probing manner.

7. The method according to claim 3 or 4, wherein the probing capability information comprises a second parameter and a fourth parameter; the second parameter is used for indicating the antenna port information of the terminal, and the antenna port information of the terminal comprises the number of transmitting antenna ports and the number of receiving antenna ports; the fourth parameter is used for indicating whether the terminal has the antenna selection capability;

if the fourth parameter is used to indicate that the terminal has the antenna selection capability, the probing capability information is used to indicate that the terminal supports at least the second probing manner;

8. The method for configuring channel sounding according to claim 3 or 4, wherein the method further comprises:

if the terminal uses the third detection mode to perform downlink channel detection, the terminal sends downlink channel information to the network equipment;

wherein the downlink channel information includes: the characteristic values and the characteristic vectors corresponding to the N first matrixes are equal to a conjugate transpose vector of a second channel vector multiplied by the second channel vector, the second channel vector is determined by dividing the first channel vector by an element at a preset position in a downlink channel matrix, the first channel vector is a row vector in the downlink channel matrix, and N is an integer greater than or equal to 1;

or, the downlink channel information includes: the channel estimation method comprises a power phase difference parameter and N third channel vectors, wherein the third channel vectors are determined by dividing a second channel vector by the power phase difference parameter, the second channel vector is determined by dividing a first channel vector by an element at a preset position in a downlink channel matrix, and the power phase difference parameter is one element in the N second channel vectors.

9. A method for configuring channel sounding, the method comprising:

the method comprises the steps that network equipment receives detection capability information sent by a terminal, wherein the detection capability information is used for indicating a channel detection mode supported by the terminal;

the network equipment determines a channel detection mode supported by the terminal according to the detection capability information;

the method further comprises the following steps:

the network equipment sends indication information to the terminal, wherein the indication information is used for indicating a target channel detection mode, and the target channel detection mode is one of the channel detection modes indicated by the detection capability information; alternatively, the first and second electrodes may be,

the network device sends configuration information to the terminal, wherein the configuration information is used for configuring reference signal resources required by a target channel detection mode for the terminal, and the configuration information is also used for enabling the terminal to determine the target channel detection mode, and the target channel detection mode is one of the channel detection modes indicated by the detection capability information.

10. The method according to claim 9, wherein the channel sounding mode comprises at least one of a downlink channel sounding mode based on channel reciprocity and a downlink channel sounding mode based on codebook feedback.

11. The method according to claim 10, wherein the channel sounding mode includes at least one of a first sounding mode, a second sounding mode, and a third sounding mode;

12. The method according to claim 11, wherein if the probing capability information includes a first parameter, the probing capability information is used to indicate that the terminal supports at least one of the second probing manner and the third probing manner; wherein the first parameter is used for indicating that the terminal supports channel reciprocity.

13. The method according to claim 11 or 12, wherein the probing capability information includes a second parameter, and the second parameter is used to indicate antenna port information of the terminal, and the antenna port information of the terminal includes the number of transmit antenna ports and the number of receive antenna ports;

14. The method according to claim 11 or 12, wherein the probing capability information comprises a second parameter and a third parameter; the second parameter is used for indicating the antenna port information of the terminal, and the third parameter is used for indicating the antenna port information of the terminal with antenna selection capability;

15. The method according to claim 11 or 12, wherein the probing capability information comprises a second parameter and a fourth parameter; the second parameter is used for indicating the antenna port information of the terminal, and the antenna port information of the terminal comprises the number of transmitting antenna ports and the number of receiving antenna ports; the fourth parameter is used for indicating whether the terminal has the antenna selection capability;

16. The method for configuring channel sounding according to claim 11 or 12, wherein the method further comprises:

the network equipment receives downlink channel information sent by the terminal;

17. A terminal, comprising:

a processing module, configured to generate detection capability information, where the detection capability information is used to indicate a channel detection mode supported by the terminal;

the communication module is used for sending the detection capability information to the network equipment;

the communication module is further configured to receive indication information sent by the network device, where the indication information is used to indicate a target channel detection mode, and the target channel detection mode is one of channel detection modes indicated by the detection capability information; alternatively, the first and second electrodes may be,

the communication module is further configured to receive configuration information sent by the network device, where the configuration information is used to configure a reference signal resource required by a target channel sounding mode for the terminal, and the configuration information is further used to enable the terminal to determine the target channel sounding mode, where the target channel sounding mode is one of channel sounding modes indicated by the sounding capability information.

18. The terminal of claim 17, wherein the channel sounding mode comprises at least one of a downlink channel sounding mode based on channel reciprocity and a downlink channel sounding mode based on codebook feedback.

19. The terminal of claim 18, wherein the channel sounding mode comprises at least one of a first sounding mode, a second sounding mode, and a third sounding mode;

20. The terminal of claim 19, wherein if the probing capability information includes a first parameter, the probing capability information is used to indicate that the terminal supports at least one of the second probing manner and the third probing manner; wherein the first parameter is used for indicating that the terminal supports channel reciprocity.

21. The terminal according to claim 19 or 20, wherein the probing capability information includes a second parameter, and the second parameter is used to indicate antenna port information of the terminal, and the antenna port information of the terminal includes a number of transmit antenna ports and a number of receive antenna ports;

22. The terminal according to claim 19 or 20, wherein the probing capability information comprises a second parameter and a third parameter; the second parameter is used for indicating the antenna port information of the terminal, and the third parameter is used for indicating the antenna port information of the terminal with antenna selection capability;

23. The terminal according to claim 19 or 20, wherein the probing capability information comprises a second parameter and a fourth parameter; the second parameter is used for indicating the antenna port information of the terminal, and the antenna port information of the terminal comprises the number of transmitting antenna ports and the number of receiving antenna ports; the fourth parameter is used for indicating whether the terminal has the antenna selection capability;

24. The terminal according to claim 19 or 20,

the communication module is further configured to send downlink channel information to the network device if the terminal performs downlink channel detection using the third detection method;

25. A network device, comprising:

the communication module is used for receiving detection capability information sent by a terminal, wherein the detection capability information is used for indicating a channel detection mode supported by the terminal;

the processing module is used for determining a channel detection mode supported by the terminal according to the detection capability information;

the network device further includes:

the communication module is further configured to send indication information to the terminal, where the indication information is used to indicate a target channel detection mode, and the target channel detection mode is one of the channel detection modes indicated by the detection capability information; alternatively, the first and second electrodes may be,

the communication module is further configured to send configuration information to the terminal, where the configuration information is used to configure reference signal resources required by a target channel sounding mode for the terminal, and the configuration information is further used to enable the terminal to determine the target channel sounding mode, where the target channel sounding mode is one of channel sounding modes indicated by the sounding capability information.

26. The network device of claim 25, wherein the channel sounding mode comprises at least one of a downlink channel sounding mode based on channel reciprocity and a downlink channel sounding mode based on codebook feedback.

27. The network device of claim 26, wherein the channel sounding mode comprises at least one of a first sounding mode, a second sounding mode, and a third sounding mode;

28. The network device according to claim 27, wherein if the probing capability information includes a first parameter, the probing capability information is used to indicate that the terminal supports at least one of the second probing manner and the third probing manner; wherein the first parameter is used for indicating that the terminal supports channel reciprocity.

29. The network device according to claim 27 or 28, wherein the probing capability information includes a second parameter, and the second parameter is used to indicate antenna port information of the terminal, and the antenna port information of the terminal includes the number of transmit antenna ports and the number of receive antenna ports;

30. The network device according to claim 27 or 28, wherein the probing capability information comprises a second parameter and a third parameter; the second parameter is used for indicating the antenna port information of the terminal, and the third parameter is used for indicating the antenna port information of the terminal with antenna selection capability;

31. The network device according to claim 27 or 28, wherein the probing capability information comprises a second parameter and a fourth parameter; the second parameter is used for indicating the antenna port information of the terminal, and the antenna port information of the terminal comprises the number of transmitting antenna ports and the number of receiving antenna ports; the fourth parameter is used for indicating whether the terminal has the antenna selection capability;

32. The network device of claim 27 or 28,

the communication module is further configured to receive downlink channel information sent by the terminal;

33. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program comprising program instructions that, when executed by a processor, cause the processor to perform the method of configuring channel sounding according to any one of claims 1 to 8.

34. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program comprising program instructions that, when executed by a processor, cause the processor to perform the method of configuring channel sounding according to any one of claims 9 to 16.