CN111262667B - Channel detection configuration method and device - Google Patents

Abstract

The present application provides a configuration method and device for channel sounding, which relate to the field of communication technologies and are used for network equipment to know the downlink channel sounding method supported by a terminal, so that the network equipment can correctly configure and schedule reference signal resources. The method includes: the terminal generates detection capability information, where the detection capability information is used to indicate a channel detection mode supported by the terminal; then, the terminal sends the detection capability information to the network device; in this way, the network device can determine the detection capability information according to the detection capability information. Channel detection mode supported by the terminal. This application applies to the process of terminal capability reporting.

Description

Configuration method and device for channel sounding

technical field

The present application relates to the field of communication technologies, and in particular, to a configuration method and device for channel sounding.

Background technique

Channel sounding technology is an indispensable technology in wireless communication, which is used to obtain channel information. It can be understood that, especially when the communication system supports multi-user transmission, accurate channel information can improve the accuracy of precoding, thereby better eliminating inter-stream interference and improving the overall performance of multi-user transmission. At present, downlink channel detection methods can be mainly divided into two types, one is a downlink channel detection method based on codebook feedback, and its typical application scenarios are frequency division duplexing (frequency division duplexing, FDD) scenarios; the other is A typical application scenario of the downlink channel detection method based on channel reciprocity is a time division duplexing (time division duplexing, TDD) scenario.

With the improvement of codebook feedback accuracy and the technological evolution of reciprocity-based downlink channel detection methods, these two channel detection methods are gradually no longer strongly bound to scenarios. For example, in TDD scenarios, based on codebook feedback The downlink channel detection method can also approach the upper limit of the channel capacity, and in the FDD scenario, the downlink channel information can also be obtained by using the channel reciprocity to a certain extent. Therefore, the above two downlink channel detection methods have a basis for coexisting in the same communication system, or even in the same communication scenario.

However, the two downlink channel detection methods have different requirements on the software and hardware of the terminal, and also have different capabilities of different terminals due to factors such as product positioning and equipment cost. In this way, the network device cannot correctly configure and schedule reference signal resources without knowing whether the terminal supports different downlink channel sounding methods. At present, the industry has not provided a suitable solution for this problem.

SUMMARY OF THE INVENTION

The present application provides a configuration method and device for channel sounding, which are used to make a network device know the channel sounding mode supported by a terminal, so that the network device can correctly configure and schedule reference signal resources.

To achieve the above purpose, the application provides the following technical solutions:

In a first aspect, a method for configuring channel sounding is provided, including: generating sounding capability information by a terminal, where the sounding capability information is used to indicate a channel sounding mode supported by the terminal; and then sending the sounding capability information to a network device by the terminal. Therefore, the network device can learn the channel detection mode supported by the terminal from the detection capability information, so that the network device can correctly configure and schedule the reference signal resources.

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

Alternatively, the above-mentioned channel detection mode includes a first detection mode, a second detection mode, and a third detection mode. The first detection mode is a downlink channel detection mode based only on codebook feedback. The second detection method is a downlink channel detection method based only on channel reciprocity. The third detection method is a downlink channel detection method combining channel reciprocity and codebook feedback.

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

In a possible design, if the detection capability information includes information of one or more first-type detection modes, the detection capability information is used to indicate that the terminal supports the corresponding one or more first-type detection modes. If the detection capability information does not include any information of the first type of detection mode, the detection capability information is used to indicate that the terminal supports the second type of detection mode. Wherein, the second type of detection mode is other detection modes except the first type of detection mode in the channel detection mode.

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

In one possible design, the detection capability information includes the second parameter. The second parameter is used to indicate the 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 transmit antenna ports indicated by the second parameter is equal to the number of receive antenna ports indicated by the second parameter, the detection capability information is used to indicate that the terminal supports at least the second detection mode. 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 detection capability information is used to indicate that the terminal supports at least the third detection mode.

In a possible design, the detection capability information includes the second parameter and the third parameter. Wherein, the third parameter is used to indicate the antenna port information that the terminal has the antenna selection capability. 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 to indicate that the terminal supports at least 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 detection capability information is used to indicate that the terminal supports the third detection mode, or the detection capability information is used to indicate The terminal supports the third detection mode and the first detection mode.

In a possible design, the detection capability information includes a second parameter and a fourth parameter, and the fourth parameter is used to indicate whether the terminal has an antenna selection capability. If the fourth parameter is used to indicate that the terminal has an antenna selection capability, the detection capability information is used to indicate that the terminal supports at least 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 detection capability information is used to indicate that the terminal supports the third detection mode, or the detection capability information is used to indicate that the terminal supports the first detection mode and the third detection mode.

In a possible design, if the detection capability information includes the fifth parameter, the detection capability information is used to indicate that the terminal supports the third detection mode. The fifth parameter is used to indicate that the terminal does not support channel reciprocity.

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

In a possible design, the method further includes: the terminal receives configuration information sent by the network device, the configuration information is used to configure the reference signal resources required by the target channel sounding mode for the terminal, and the configuration information is also used to enable the terminal to determine the target The channel detection mode, 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 an appropriate downlink channel sounding method.

In a possible design, the method further includes: if the terminal performs downlink channel detection using the third detection method, the terminal sends downlink channel information to the network device; wherein the downlink channel information includes: eigenvalues corresponding to the N first matrices and the eigenvector, the first matrix is equal to the conjugate transpose vector of the second channel vector multiplied by the second channel vector, and the second channel vector is determined by dividing the first channel vector by the element at the preset position in the downstream channel matrix, the first The 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: a power phase difference parameter and N third channel vectors, where the third channel vector is divided by the second channel vector by the power The phase difference parameter is determined, the second channel vector is determined by dividing the first channel vector by an element at a preset position in the downstream channel matrix, and the power phase difference parameter is one element of the N second channel vectors. In this way, the network device can accurately reconstruct the downlink channel according to the downlink channel information, so as to avoid the influence of different power gains between the terminal and the network device.

In a second aspect, a method for configuring channel detection is provided, including: a network device receiving detection capability information sent by a terminal, where the detection capability information is used to indicate a channel detection mode supported by the terminal; then, the network device determines, according to the detection capability information, Channel detection mode supported by the terminal. In this way, it can be avoided that the network device misconfigures the reference signal resources used for downlink channel sounding by the terminal.

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

Alternatively, the above-mentioned channel detection mode includes a first detection mode, a second detection mode, and a third detection mode. The first detection mode is a downlink channel detection mode based only on codebook feedback. The second detection method is a downlink channel detection method based only on channel reciprocity. The third detection method is a downlink channel detection method combining channel reciprocity and codebook feedback.

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

In a possible design, if the detection capability information includes information of one or more first-type detection modes, the detection capability information is used to indicate that the terminal supports the corresponding one or more first-type detection modes. If the detection capability information does not include any information of the first type of detection mode, the detection capability information is used to indicate that the terminal supports the second type of detection mode. Wherein, the second type of detection mode is other detection modes except the first type of detection mode in the channel detection mode.

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

In one possible design, the detection capability information includes the second parameter. The second parameter is used to indicate the 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 transmit antenna ports indicated by the second parameter is equal to the number of receive antenna ports indicated by the second parameter, the detection capability information is used to indicate that the terminal supports at least the second detection mode. 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 detection capability information is used to indicate that the terminal supports at least the third detection mode.

In a possible design, the detection capability information includes the second parameter and the third parameter. Wherein, the third parameter is used to indicate the antenna port information that the terminal has the antenna selection capability. 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 to indicate that the terminal supports at least 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 detection capability information is used to indicate that the terminal supports the third detection mode, or the detection capability information is used to indicate The terminal supports the third detection mode and the first detection mode.

In a possible design, the detection capability information includes a second parameter and a fourth parameter, and the fourth parameter is used to indicate whether the terminal has an antenna selection capability. If the fourth parameter is used to indicate that the terminal has an antenna selection capability, the detection capability information is used to indicate that the terminal supports at least 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 detection capability information is used to indicate that the terminal supports the third detection mode, or the detection capability information is used to indicate that the terminal supports the first detection mode and the third detection mode.

In a possible design, if the detection capability information includes the fifth parameter, the detection capability information is used to indicate that the terminal supports the third detection mode. The fifth parameter is used to indicate that the terminal does not support channel reciprocity.

In a possible design, the method further includes: the network device sends indication information to the terminal, where the indication information is used to indicate a target channel detection method, and the target channel detection method is one of the channel detection methods indicated by the detection capability information. That is, the network device explicitly instructs the terminal to use an appropriate downlink channel sounding method.

In a possible design, the method further includes: the network device sends configuration information to the terminal, where the configuration information is used to configure the reference signal resources required by the target channel detection mode for the terminal, and the configuration information is also used to enable the terminal to determine the target channel. The detection mode, 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 an appropriate downlink channel sounding method.

In a possible design, the method further includes: the network device receives downlink channel information sent by the terminal. The downlink channel information includes: eigenvalues and eigenvectors corresponding to N first matrices, the first matrix is equal to the conjugate transpose vector of the second channel vector multiplied by the second channel vector, and the second channel vector is determined by the first channel vector Determined by dividing the element at the preset position in the downlink channel matrix, the first channel vector is the 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 the Nth Three 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 the element at the preset position in the downstream channel matrix. The first channel vector is A row vector in the downlink channel matrix, and the power phase difference parameter is one element of the N second channel vectors. In this way, the network device can accurately reconstruct the downlink channel according to the downlink channel information, so as to avoid the influence of different power gains between the terminal and the network device.

In a third aspect, a terminal is provided, including: a processing module configured to generate sounding capability information, where the sounding capability information is used to indicate a channel sounding mode supported by the terminal. The communication module is used for sending detection capability information to the network device.

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

Alternatively, the above-mentioned channel detection mode includes a first detection mode, a second detection mode, and a third detection mode. The first detection mode is a downlink channel detection mode based only on codebook feedback. The second detection method is a downlink channel detection method based only on channel reciprocity. The third detection method is a downlink channel detection method combining channel reciprocity and codebook feedback.

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

In a possible design, if the detection capability information includes information of one or more first-type detection modes, the detection capability information is used to indicate that the terminal supports the corresponding one or more first-type detection modes. If the detection capability information does not include any information of the first type of detection mode, the detection capability information is used to indicate that the terminal supports the second type of detection mode. Wherein, the second type of detection mode is other detection modes except the first type of detection mode in the channel detection mode.

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

In one possible design, the detection capability information includes the second parameter. The second parameter is used to indicate the 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 transmit antenna ports indicated by the second parameter is equal to the number of receive antenna ports indicated by the second parameter, the detection capability information is used to indicate that the terminal supports at least the second detection mode. 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 detection capability information is used to indicate that the terminal supports at least the third detection mode.

In a possible design, the detection capability information includes the second parameter and the third parameter. Wherein, the third parameter is used to indicate the antenna port information that the terminal has the antenna selection capability. 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 to indicate that the terminal supports at least 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 detection capability information is used to indicate that the terminal supports the third detection mode, or the detection capability information is used to indicate The terminal supports the third detection mode and the first detection mode.

In a possible design, the detection capability information includes a second parameter and a fourth parameter, and the fourth parameter is used to indicate whether the terminal has an antenna selection capability. If the fourth parameter is used to indicate that the terminal has an antenna selection capability, the detection capability information is used to indicate that the terminal supports at least 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 detection capability information is used to indicate that the terminal supports the third detection mode, or the detection capability information is used to indicate that the terminal supports the first detection mode and the third detection mode.

In a possible design, if the detection capability information includes the fifth parameter, the detection capability information is used to indicate that the terminal supports the third detection mode. The fifth parameter is used to indicate that the terminal does not support channel reciprocity.

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

In a possible design, the communication module is further configured to send downlink channel information to the network device if the terminal uses the third detection method for downlink channel detection; wherein the downlink channel information includes: eigenvalues corresponding to the N first matrices and the eigenvector, the first matrix is equal to the conjugate transpose vector of the second channel vector multiplied by the second channel vector, and the second channel vector is determined by dividing the first channel vector by the element at the preset position in the downstream channel matrix, the first The 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: a power phase difference parameter and N third channel vectors, where the third channel vector is divided by the second channel vector by the power The phase difference parameter is determined, the second channel vector is determined by dividing the first channel vector by an element at a preset position in the downstream channel matrix, and the power phase difference parameter is one element of the N second channel vectors.

In a fourth aspect, a terminal is provided, including: a processor, which is configured to be coupled to a memory, read instructions in the memory, and implement the channel detection according to any one of the first aspects according to the instructions configuration method.

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

In a sixth aspect, a computer-readable storage medium is provided, and instructions are stored in the computer-readable storage medium, so that when the computer-readable storage medium runs on the terminal, the terminal can perform the channel sounding configuration described in any one of the first aspects above. method.

According to a seventh aspect, a computer program product including instructions is provided, which, when running on a terminal, enables the terminal to perform the channel sounding configuration method described in any one of the above-mentioned first aspect.

In an eighth aspect, a chip system is provided, where the chip system includes a processor for supporting a terminal to implement the functions involved in the first aspect. It should be noted that the processor may be a dedicated processor or a general-purpose processor. In a possible design, the chip system includes a memory for storing necessary program instructions and data of the terminal. The chip system can be composed of chips, and can also include chips and other discrete devices.

Wherein, for the technical effect brought by any one of the design methods in the third aspect to the eighth aspect, reference may be made to the technical effect brought by the different design methods in the first aspect, which will not be repeated here.

In a ninth aspect, a network device is provided, comprising: a communication module configured to receive detection capability information sent by a terminal, where the detection capability information is used to indicate a channel detection mode supported by the terminal. A processing module, configured to determine a channel sounding mode supported by the terminal according to the sounding capability information.

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

Alternatively, the above-mentioned channel detection mode includes a first detection mode, a second detection mode, and a third detection mode. The first detection mode is a downlink channel detection mode based only on codebook feedback. The second detection method is a downlink channel detection method based only on channel reciprocity. The third detection method is a downlink channel detection method combining channel reciprocity and codebook feedback.

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

In a possible design, if the detection capability information includes information of one or more first-type detection modes, the detection capability information is used to indicate that the terminal supports the corresponding one or more first-type detection modes. If the detection capability information does not include any information of the first type of detection mode, the detection capability information is used to indicate that the terminal supports the second type of detection mode. Wherein, the second type of detection mode is other detection modes except the first type of detection mode in the channel detection mode.

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

In one possible design, the detection capability information includes the second parameter. The second parameter is used to indicate the 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 transmit antenna ports indicated by the second parameter is equal to the number of receive antenna ports indicated by the second parameter, the detection capability information is used to indicate that the terminal supports at least the second detection mode. 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 detection capability information is used to indicate that the terminal supports at least the third detection mode.

In a possible design, the detection capability information includes the second parameter and the third parameter. Wherein, the third parameter is used to indicate the antenna port information that the terminal has the antenna selection capability. 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 to indicate that the terminal supports at least 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 detection capability information is used to indicate that the terminal supports the third detection mode, or the detection capability information is used to indicate The terminal supports the third detection mode and the first detection mode.

In a possible design, the detection capability information includes a second parameter and a fourth parameter, and the fourth parameter is used to indicate whether the terminal has an antenna selection capability. If the fourth parameter is used to indicate that the terminal has an antenna selection capability, the detection capability information is used to indicate that the terminal supports at least 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 detection capability information is used to indicate that the terminal supports the third detection mode, or the detection capability information is used to indicate that the terminal supports the first detection mode and the third detection mode.

In a possible design, if the detection capability information includes the fifth parameter, the detection capability information is used to indicate that the terminal supports the third detection mode. The fifth parameter is used to indicate that the terminal does not support channel reciprocity.

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 detection method, and the target channel detection method is one of the channel detection methods indicated by the detection 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 the reference signal resources required by the target channel sounding mode for the terminal, and the configuration information is also used to enable the terminal to determine the target channel sounding method. The target channel detection mode is one of the channel detection modes indicated by the detection capability information.

In a possible design, the communication module is further configured to receive downlink channel information sent by the terminal. The downlink channel information includes: eigenvalues and eigenvectors corresponding to N first matrices, the first matrix is equal to the conjugate transpose vector of the second channel vector multiplied by the second channel vector, and the second channel vector is determined by the first channel vector Determined by dividing the element at the preset position in the downlink channel matrix, the first channel vector is the 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 the Nth Three 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 the element at the preset position in the downstream channel matrix. The first channel vector is A row vector in the downlink channel matrix, and the power phase difference parameter is one element of the N second channel vectors.

According to a tenth aspect, a network device is provided, comprising: a processor, which is configured to be coupled to a memory, read instructions in the memory, and implement the channel according to any one of the above-mentioned second aspects according to the instructions Probe configuration method.

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

A twelfth aspect provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, when the computer-readable storage medium runs on a network device, the network device can execute the channel described in any one of the second aspects above Probe configuration method.

A thirteenth aspect provides a computer program product containing instructions, which, when running on a network device, enable the network device to perform the channel sounding configuration method according to any one of the second aspects above.

A fourteenth aspect provides a chip system, where the chip system includes a processor for supporting a network device to implement the functions involved in the second aspect above. It should be noted that the processor may be a dedicated processor or a general-purpose processor. In a possible design, the chip system includes a memory for storing necessary program instructions and data of the network device. The chip system can be composed of chips, and can also include chips and other discrete devices.

Wherein, for the technical effect brought by any one of the design methods in the ninth aspect to the fourteenth aspect, reference may be made to the technical effect brought by the different design methods in the second aspect, which will not be repeated here.

A fifteenth aspect provides a communication system including a network device and a terminal. The terminal is configured to perform the channel sounding configuration method described in any one of the first aspect above. The network device is configured to perform the channel sounding configuration method described in any one of the second aspect above.

Description of drawings

FIG. 1 is a schematic diagram of a communication system provided by an embodiment of the present application;

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

3 is a flowchart 1 of a configuration method for channel sounding provided by an embodiment of the present application;

FIG. 4 is a second flowchart of a configuration method for channel sounding provided by an embodiment of the present application;

FIG. 5 is a third flowchart of a configuration method for channel sounding provided by an embodiment of the present application;

FIG. 6 is a fourth flowchart of a configuration method for channel sounding provided by an embodiment of the present application;

7 is a flowchart of a method for reporting downlink channel information provided by 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 ways

For ease of understanding, some concepts involved in the embodiments of the present application are briefly introduced below.

(1) The first detection method

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

Exemplarily, the process of the first detection method is as follows: the network device configures downlink reference signal resources for the terminal; the terminal receives the downlink reference signal at the corresponding downlink reference signal resource, performs channel estimation on the downlink reference signal, and determines the downlink channel matrix; After that, 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.

It should be noted that the above is only a brief introduction to the first detection method, and does not constitute a limitation on the first detection method. For the specific implementation of the first detection manner, those skilled in the art may refer to the prior art.

(2) The second detection method

The second detection method is a downlink channel detection method based only on channel reciprocity. In other words, the second detection method is a downlink channel detection method in which all downlink channel information is obtained based on channel reciprocity. Among them, the channel reciprocity means that the uplink channel and the downlink channel have the same characteristics in the coherence time.

Compared with the first sounding method, the second sounding method can reduce the feedback overhead of the downlink channel information, and can also avoid errors caused by the quantization and feedback of the downlink channel information. That is to say, the second sounding method can acquire more accurate downlink channel information when the channel conditions are good.

Exemplarily, the process of the second detection method is as follows: the network device configures uplink reference signal resources for the terminal, and the terminal sends the uplink reference signal on the corresponding uplink reference signal resource; the network device estimates the uplink channel according to the received downlink reference signal. , to obtain the uplink channel matrix; then, the network device non-conjugate transposes the uplink channel matrix to the downlink channel matrix based on channel reciprocity.

It should be noted that the channel of a multiple input multiple output (MIMO) system can be described by an N1*N2 channel matrix, where N1 represents the number of receiving antenna ports on the receiving end, and N2 represents the number of transmitting antenna ports on the transmitting end. number. If the second detection method is applied in a MIMO system, it is assumed that the number of receiving antenna ports of the terminal is N1, the number of transmitting antenna ports of the network device is N2, the terminal sends the uplink reference signal through N1 transmitting antenna ports, and the network device receives the uplink reference signal through N2 transmitting antenna ports. The antenna port receives the uplink reference signal to determine the N2*N1 uplink channel matrix. After that, based on channel reciprocity, the network device non-conjugate transposes the N2*N1 uplink channel matrix to the N1*N2 downlink channel matrix, so that the network device obtains complete downlink channel information.

However, in consideration of product positioning and cost, the number of transmit antenna ports that the terminal can support is not necessarily equal to the number of receive antenna ports. In general, the number of transmit antenna ports supported by a 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 the antenna selection capability to support the second detection method. It can be understood that the antenna selection capability refers to the capability of the communication device to switch the antenna port through a physical switch to send/receive signals from different physical antennas respectively. A communication device with antenna selection capability can use fewer antenna ports to achieve the goal of measuring channel information of more antenna ports. In the antenna selection capability, the antenna port for switching different physical antennas can be a transmit antenna port or a receive antenna port according to different specific scenarios and configurations. In this embodiment of the present application, the terminal has an antenna selection capability, which generally means that the transmitting antenna port of the terminal can switch between different physical antennas. For example, it is assumed that the number of transmit antenna ports of the terminal is 1, the number of receive antenna ports is 2, and the terminal transmits the uplink reference signal twice through the transmit antenna ports. Moreover, each time the uplink reference signal is sent, the transmitting antenna port needs to use the physical antenna that has not been used for sending the uplink reference signal in this channel sounding. In this way, when the number of transmitting antenna ports of the terminal is less than the number of receiving antenna ports, the network device can also obtain the uplink channel information of the two antenna ports, so that the network device can determine complete downlink channel information.

It should be noted that the above is only a brief introduction to the second detection method, and does not constitute a limitation on the second detection method. For the specific implementation of the second detection manner, those skilled in the art may refer to the prior art.

(3) The third detection method

The third detection method is a compromise solution between the second detection method and the first detection method. The third sounding method is a downlink channel sounding method combining channel reciprocity and codebook feedback. That is to say, the third sounding manner 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 sounding method, the third sounding method can reduce the feedback overhead of a part of the downlink channel information, and can also avoid errors caused by quantization and feedback of the part of the downlink channel information. Compared with the second detection method, the third detection method does not require the terminal to have an antenna selection capability.

The third detection method is described below by way of example. It is assumed that the number of transmitting antenna ports and receiving antenna ports of the network device is N2, the number of transmitting antenna ports of the terminal is N3, and the number of receiving antenna ports of the terminal is N1, N1 >N3. On the one hand, a part of downlink channel information is determined based on channel reciprocity. Specifically, the terminal transmits uplink reference signals at N3 transmit antenna ports; the network equipment performs channel estimation on the uplink reference signals, and determines an uplink channel matrix of N2*N3; Based on the channel reciprocity, the N2*N3 uplink channel matrix is transposed to the N3*N2 downlink channel matrix. On the other hand, another part of downlink channel information is determined based on the 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 uses (N1-N3)*N2 The downlink channel matrix of N3)*N2 is fed back to the network device through the codebook. In this way, the network device can perform channel reconstruction based on the N3*N2 downlink channel matrix determined based on channel reciprocity and the (N1-N3)*N2 downlink channel matrix determined based on codebook feedback to determine the complete downlink channel matrix. channel matrix.

It should be noted that the above is only a brief introduction to the third detection method, and does not constitute a limitation on the third detection method. For the specific implementation of the third detection manner, those 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 accompanying drawings in the embodiments of the present application.

In the description of this application, unless otherwise stated, "/" means "or", for example, A/B can mean A or B. In this article, "and/or" is only an association relationship to describe the associated objects, which means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone these three situations. Further, "at least one" means one or more, and "plurality" means two or more. The words "first" and "second" do not limit the quantity and execution order, and the words "first", "second" and the like do not limit certain differences.

It should be noted that, in this application, words such as "exemplary" or "for example" are used to represent examples, illustrations or illustrations. Any embodiment or design described in this application as "exemplary" or "such as" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present the related concepts in a specific manner.

In addition, the network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. With the evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

In the description of this application, "indication" may include direct indication and indirect indication, as well as explicit indication and implicit indication. The information indicated by a certain information (such as the detection capability information described below) is called information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated. For example, but not limited to, you can The information to be indicated is directly indicated, such as the information to be indicated itself or an index of the information to be indicated. The information to be indicated may also be indirectly indicated by indicating other information, wherein there is an association relationship 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 other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information can also be implemented by means of a pre-agreed (for example, a protocol stipulated) arrangement order of various information, so as to reduce the indication overhead to a certain extent.

The technical solutions provided in the embodiments of the present application can be applied to various communication systems, for example, an NR communication system using the fifth generation (5th generation, 5G) communication technology, a future evolution system, or a variety of communication fusion systems, and so on. The technical solutions provided in this application can be applied to various application scenarios, such as machine to machine (M2M), macro-micro communication, enhanced mobile broadband (eMBB), ultra-reliable and ultra-low latency Communication (ultra-reliable&low latency communication, uRLLC) and massive IoT communication (massive machine type communication, mMTC) and other scenarios. These scenarios may include but are not limited to: a communication scenario between terminals, a communication scenario between a network device and a network device, a communication scenario between a network device and a terminal, and the like. The following descriptions are given by taking a scenario where the communication between a network device and a terminal is applied as an example.

FIG. 1 is a schematic diagram of a communication system to which the technical solutions provided by the embodiments of the present application are applied. As shown in FIG. 1 , the communication system may include one or more network devices 20 (only one is shown) and one or more terminals 10 connected to each network device 20 . FIG. 1 is only a schematic diagram, and does not constitute a limitation on the applicable scenarios of the technical solutions provided in the present application.

The network device 20 may be a base station or a base station controller or the like for wireless communication. For example, the base station may include various types of base stations, such as a micro base station (also referred to as a small cell), a macro base station, a relay station, an access point, etc., which are not specifically limited in this embodiment of the present application. In this embodiment of the present application, the base station may be a global system for mobile communication (GSM), a base transceiver station (BTS) in code division multiple access (CDMA), a wideband code Base station (node B) in wideband code division multiple access (WCDMA), evolved base station (evolutional node B, eNB or e-NodeB) in LTE, internet of things (IoT) or narrowband IoT The eNB in the (narrow band-internet of things, NB-IoT), the base station in the future 5G mobile communication network or the future evolved public land mobile network (public land mobile network, PLMN), the embodiment of this application does not impose any restrictions on this .

Terminal 10 is used to provide voice and/or data connectivity services to users. The terminal 10 may have different names, such as user equipment (user equipment, UE), access terminal, terminal unit, terminal station, mobile station, mobile station, remote station, remote terminal, mobile equipment, wireless communication equipment, terminal agent or terminal device, etc. Optionally, the terminal 10 may be various handheld devices, vehicle-mounted devices, wearable devices, and computers with communication functions, which are 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 can be a smart bracelet. The computer may be a personal digital assistant (PDA) computer, a tablet computer, and a laptop computer.

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

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

The processor 101, the memory 102 and the 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 processors used to control the execution of the programs of the present application. integrated circuit. The processor 101 may also include multiple CPUs, and the processor 101 may be a single-CPU processor or a multi-CPU processor. A processor herein may refer to one or more devices, circuits, or processing cores for processing data (eg, computer program instructions).

Memory 102 may be read-only memory (ROM) or other types of static storage devices that may store static information and instructions, random access memory (RAM), or other types of information and instructions It can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM), or other optical disk storage, optical disk storage ( including compact discs, laser discs, compact discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or capable of carrying or storing desired program code in the form of instructions or data structures and capable of being stored by a computer Any other medium taken, this embodiment of the present application does not impose any limitation on this. The memory 102 may exist independently and be connected to the processor 101 through a bus. The memory 102 may also be integrated with the processor 101 . Wherein, the memory 102 is used for storing the application program code for executing the solution of the present application, and the execution is controlled by the processor 101 . The processor 101 is configured to execute the computer program codes stored in the memory 102, so as to implement the methods provided by the embodiments of the present application.

The transceiver 103 may use any transceiver-like device for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), and the like. The transceiver 103 includes a transmitter Tx and a receiver Rx.

The output device 104 communicates with the processor 101 and can 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, or a projector (projector) Wait. The input device 105 is in communication with the processor 101 and can receive user input in a variety of ways. For example, the input device 105 may be a mouse, a keyboard, a touch screen device, a sensor device, or the like.

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, the memory 202, the transceiver 203 and the network interface 204 are connected by a bus. Wherein, the network interface 204 is used to connect with the core network device through a link (such as the S1 interface), or connect with the network interface of other network devices through a wired or wireless link (such as the X2 interface) (not shown in the figure), This embodiment of the present application does not specifically limit this. In addition, for the description of the processor 201, the memory 202, and the transceiver 203, reference may be made to the description of the processor 101, the memory 102, and the transceiver 103 in the terminal 10, and details are not repeated here.

As shown in FIG. 3 , a configuration method for channel sounding provided by an embodiment of the present application includes the following steps:

S101. The terminal generates detection capability information, where the detection capability information is used to indicate a channel detection mode supported by the terminal.

Wherein, the channel sounding method includes at least one of a downlink channel sounding method based on channel reciprocity and a downlink channel sounding method based on codebook feedback.

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

It should be noted that the embodiment of the present application does not limit the channel detection method, that is, the above-mentioned channel detection method is not limited to include the first detection method, the second detection method, and the third detection method, and may also include other detection methods, such as based on The channel detection method of the artificial intelligence algorithm is another example of the channel detection method based on the combination of the artificial intelligence algorithm and other methods.

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

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

The following takes the channel sounding method including the first sounding method, the second sounding method and the third sounding method as an example to specifically describe how the sounding capability information indicates the channel sounding method supported by the terminal. It can be understood that, if the channel detection method further includes other detection methods, those skilled in the art can reasonably deduce the corresponding technical solutions according to the technical solutions provided in the embodiments of the present application.

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

In case 1, the detection capability information is represented by n bits, and the value of the n bits is used to indicate the channel detection mode supported by the terminal. For example, the detection capability information may be represented by three bits, "010" indicates that the terminal supports the first detection mode, "000" indicates that the terminal supports the second detection mode, "001" indicates that the terminal supports the third detection mode, and "100" indicates that the terminal supports the third detection mode The terminal supports the first detection method and the second detection method, "101" indicates that the terminal supports the first detection method and the third detection method, "011" indicates that the terminal supports the second detection method and the third detection method, and "110" indicates that the terminal supports The first detection mode, the second detection mode and the third detection mode.

In case 2, the detection 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, and the like of the second detection mode. The information of the third detection mode may be an identifier, an index, a name, and the like of the third detection mode.

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

In order to facilitate those skilled in the art to understand the example described in the following scenario 3, the following briefly introduces the terms "first type of detection mode" and "second type of detection mode" involved in scenario 3.

The first type of detection method and the second type of detection method are two different types of channel detection methods, and the communication system may determine the first type of detection method and the second type of detection method according to a preset rule. For example, according to whether the communication system is based on channel reciprocity, the first detection mode may be divided into the first type of detection mode, and the second detection mode and the third detection mode may be divided into the second type of detection mode. It can be understood that "whether based on channel reciprocity" is only an example of a preset rule, and the embodiment of the present application is not limited to this.

In case 3, if the detection capability information includes information of one or more first-type detection modes, the detection capability information is used to indicate that the terminal supports the corresponding one or more first-type detection modes. If the detection capability information does not include any information of the first type of detection mode, the detection capability information is used to indicate that the terminal supports the second type of detection mode.

Optionally, when the detection capability information does not include any information of the first type of detection method, the detection capability information may include other indication information to indicate that the terminal does not support any of the first type of detection methods, but supports the second type of detection method. detection method.

Wherein, any one or more channel detection methods may be the second type of detection methods. Correspondingly, all other detection methods except the second type of detection methods in the channel detection methods may be the first type of detection methods. Taking the channel detection mode including the first detection mode, the second detection mode, and the third detection mode as an example, if the first detection mode is the second detection mode, the second detection mode and the third detection mode are both the first detection mode mode; if both 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 the default detection mode of the protocol, that is, the second type of detection mode is the detection mode supported by the system default terminal when the terminal does not report the detection capability information.

Exemplarily, taking the second detection method and the third detection method both being the first type of detection method, and the first detection method being the second type of detection method as an example, if the detection capability information includes the information of the second detection method, the detection capability The information is used to indicate that the terminal supports the second detection mode. If the detection capability information does not include the information of the second detection mode and the information of the third detection mode, but includes other indication information, such as "neither", the detection capability information is used to indicate that the terminal supports the first detection mode.

It should be noted that the above cases 1 to 3 are only examples of the detection capability information, and do not constitute a limitation on the detection capability information.

As another implementation manner, the sounding capability information indicates the channel sounding method supported by the terminal in an implicit manner. That is to say, the sounding capability information includes some parameters related to the channel sounding method. In this way, 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 detection capability information contains at least one of the following:

In case 4, if the detection capability information includes the first parameter, the detection capability information is used to indicate that the terminal supports at least one of the second detection mode and the third detection mode. 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 the downlink channel detection method based on channel reciprocity

It is understood that although channel reciprocity is an inherent feature of the channel. However, for a future communication system, when the channel has reciprocity, the capability of the terminal may need to meet certain requirements before the terminal is allowed to adopt the channel reciprocity-based downlink channel detection method. Based on this consideration, the terminal needs to report capability information (for example, the first parameter), so that the network device can know whether the terminal can adopt the downlink channel detection method based on channel reciprocity.

It can be understood that the second detection method and the third detection method are based on channel reciprocity. Therefore, in the case where channel reciprocity is reported as a parameter, the network device can determine that the terminal supports channel reciprocity, and further It is determined that the terminal supports at least one of the second detection mode and the third detection mode.

Case 5: The detection capability information includes the first parameter and the second parameter. The second parameter is used to indicate the antenna port information of the terminal. Specifically, the second parameter is used to indicate the number of transmitting antenna ports and the number of receiving 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, indicating that the transmit antenna port and the receive antenna port of the terminal are equal, and both are 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 can support the second detection mode. If the number of transmitting ports of the terminal is not equal to the number of 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 detection capability information is used to indicate that the terminal supports at least the second detection mode.

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 detection capability information is used to indicate that the terminal supports at least the third detection mode.

Scenario 6: The detection capability information includes the first parameter, the second parameter and the third parameter. Wherein, the third parameter is used to indicate the antenna port information that the terminal has the antenna selection capability. For example, the third parameter is 1T4R, which means that the terminal has one transmit antenna port and four receive antenna ports, and the one transmit antenna port can switch physical antennas four times, that is to say, the terminal can complete the uplink channel of four antenna ports. probe.

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 to indicate that the terminal supports at least the second detection mode. For example, if the third parameter included in the detection capability information is 1T4R and the second parameter is 1T4R, the transmit antenna port configured by the terminal can switch physical antennas 4 times to complete the uplink channel detection of the 4 antenna ports. Therefore, the detection capability information It is used to indicate that the terminal supports at least 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 detection capability information is used to indicate that the terminal supports the third detection mode, or the detection capability information is used to indicate The terminal supports the third detection mode and the first detection mode. For example, if the third parameter included in the detection capability information is 1T4R and the second parameter is 1T8R, the terminal's transmit antenna port can only switch physical antennas 4 times to complete the uplink channel measurement of 4 antenna ports, and the remaining 4 The channel information of the antenna port needs to be obtained by receiving downlink reference signal measurement. Therefore, the detection capability information is used to indicate that the terminal supports the third detection mode, or the detection capability information is used to indicate that the terminal supports the third detection mode and the first detection mode. .

Scenario 7: The detection capability information includes the first parameter, the second parameter and the fourth parameter. The fourth parameter is used to indicate whether the terminal has antenna selection capability. Exemplarily, the fourth parameter is "support", indicating that the terminal has an antenna selection capability; the fourth parameter is "no support", indicating that the terminal does not have an antenna selection capability.

It can be understood that, if the fourth parameter indicates that the terminal has an antenna selection capability, it means that the terminal has the capability of performing antenna selection according to the antenna port information indicated by the second parameter. For example, if the second parameter is 1T8R and the fourth parameter is "support", the terminal has one transmit antenna port and eight receive antenna ports, and at the same time, the terminal can support 1T8R antenna selection.

If the fourth parameter is used to indicate that the terminal has an antenna selection capability, the detection capability information is used to indicate that the terminal supports at least the second detection mode.

If 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, no matter what the value of the fourth parameter is, the detection capability information is used to indicate that the terminal supports at least the second detection mode.

It can be understood that, in the case that the number of transmitting antenna ports of the terminal is equal to the number of receiving antenna ports, the detection 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 detection capability information is used to indicate that the terminal supports the third detection mode, or the detection capability information is used to indicate that the terminal supports the first detection mode and the third detection mode.

Scenario 8: If the detection capability information includes the fifth parameter, the detection capability information is used to indicate that the terminal supports the third detection mode. Wherein, 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 the downlink channel sounding method based on channel reciprocity.

It should be noted that, for the above cases five to seven, if 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 channel reciprocity. That is, in this case, the detection capability information does not contain the first parameter.

It should be noted that, in case 4, the detection capability information is used to indicate that the terminal supports at least one of the second detection mode and the third detection mode, including one of the following situations: (1.1) The detection capability information is used to indicate that the terminal supports The second detection mode; (1.2) the detection capability information is used to indicate that the terminal supports the third detection mode; (1.3) the detection capability information is used to indicate that the terminal supports the second detection mode and the third detection mode; (1.4) the detection capability information is used to Indicate that the terminal supports the first detection method and the second detection method; (1.5) The detection capability information is used to indicate that the terminal supports the first detection method and the third detection method; (1.6) The detection capability information is used to indicate that the terminal supports the first detection method, The second detection mode and the third detection mode. It can be understood that which of the above (1.1) to (1.6) the network device and the terminal specifically select is determined by the pre-configuration of the communication system, or determined according to the protocol.

It should be noted that, in Scenario 5 to Scenario 7, the detection capability information is used to indicate that the terminal supports at least the second detection method, including one of the following situations: (2.1) The detection capability information is used to indicate that the terminal supports the second detection method; ( 2.2) The detection capability information is used to indicate that the terminal supports the first detection method and the second detection method; (2.3) The detection capability information is used to indicate that the terminal supports the second detection method and the third detection method; (2.4) The detection capability information is used to indicate The terminal supports the first detection mode, the second detection mode and the third detection mode. It can be understood that which of the above (2.1) to (2.4) the network device and the terminal specifically select is determined by the pre-configuration of the communication system, or determined according to the protocol.

It should be noted that, in case 6, the detection capability information is used to indicate that the terminal supports at least the third detection mode, including one of the following situations: (3.1) the detection capability information is used to indicate that the terminal supports the third detection mode; (3.2) the detection The capability information is used to indicate that the terminal supports the first detection method and the third detection method; (3.3) the detection capability information is used to indicate that the terminal supports the second detection method and the third detection method; (3.4) the detection capability information is used to indicate that the terminal supports the first detection method. A detection mode, a second detection mode and a third detection mode. It can be understood that which of the above (3.1) to (3.4) the network device and the terminal specifically select is determined by the pre-configuration of the communication system, or determined according to the protocol.

It can be understood that the above situations 4 to 5 are only examples of the detection capability information, and do not constitute any limitation. In addition, the first parameter to the fifth parameter are not necessarily included in the detection capability information, and may also be used as independent capability information. These independent capability information can be used as the basis for the network device to determine the channel sounding mode supported by the terminal.

S102. The terminal sends the detection capability information to the network device, so that the network device 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 the terminal capability query request sent by the network device, the terminal sends the detection capability information to the network device.

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

Exemplarily, other capability information includes: access layer version number, radio frequency parameters, physical layer parameters and/or packet data convergence protocol (PDCP) parameters. For other capability information, reference may be made to the prior art, which will not be repeated here.

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

Based on the technical solution shown in FIG. 3 , the terminal reports the detection capability information, so that the network device knows the channel detection mode supported by the terminal, so that 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 above channel sounding configuration method further includes step S201.

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

If the detection capability information is used to indicate that the terminal only supports the second detection mode, the specific implementation of step S201 is: the network device configures at least one first reference signal resource set for the terminal, and the first reference signal resource set includes at least one uplink reference signal resources. Optionally, the first reference signal resource set is a sounding reference signal (sounding reference signal, SRS) resource set, and the uplink reference signal resources are SRS resources.

If the detection capability information is used to indicate that the terminal only supports the first detection mode, the specific implementation of step S201 is: the network device configures at least one second reference signal resource set for the terminal, and the second reference signal resource set includes at least one downlink resource set. reference signal resources. Optionally, the second reference signal resource set is a channel state information reference signal (channel state information reference signal, CSI-RS) resource set, and the downlink reference signal resources are CSI-RS resources.

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

Manner 1: The network device sends first configuration information to the 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 (radio resource control, RRC) signaling.

To illustrate the above method 1 with an example, it is assumed that the system has configured SRS resource sets, including SRS resourceset#0, SRS resource set#1, and SRS resource set#2; the system has configured CSI-RS resource sets, including CSI-RS resource sets set#0, CSI-RS resource set#1, CSI-RS resource set#2, CSI-RS resource set#3, the first configuration information includes a set of identifiers of reference signal resource sets, such as {SRS resourcesset#0, SRS resource set#1, CSI-RS resource set#0}. Alternatively, the first configuration information may include identifiers of multiple sets of reference signal resource sets, such as {SRS resource set#0, SRS resource set#1, CSI-RSresource 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 advantage of the first method above is that the reference signal resource sets separately configured by the system for uplink and downlink channel measurements can be directly multiplexed, and there is no need to configure the third reference signal resource set separately, thereby reducing signaling overhead.

In addition, in the case where the first configuration information is used to configure a set of reference signal resource sets, the network device may activate or downlink control information through media access control (media access control, MAC)-control element (control element, CE) signaling (downlink control information, DCI) triggers the terminal to use one or more reference signal resource sets in this group of reference signal resource sets.

In the case where the first configuration information is used to configure multiple sets of reference signal resource sets, the network device may activate through MAC-CE signaling or trigger the terminal to use one set of reference signal resource sets from the multiple sets of reference signal resource sets.

Manner 2: The network device configures at least one third reference signal resource set for the terminal, where the third reference signal resource set includes at least one uplink reference signal resource and at least one downlink reference signal resource.

Optionally, the reference signal resources in the third reference signal resource set may be arranged in the following manner: (1) The reference signal resources are arranged in ascending sequence numbers. Wherein, if the sequence numbers of the uplink reference signal resources and the downlink reference signal resources are the same, 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. Exemplarily, the third reference signal resource set is {SRS resource #1, CSI-RS resource #1, SRS resource #2, CSI-RS resource #2, SRS resource #3, CSI-RS resource #3, CSI-RS resource #2 RS resource #4}. (2) Reference signal resources of the same type are arranged consecutively according to the sequence numbers from small to large, and each type of reference signal resource has an identifier for indicating its type. Exemplarily, the third reference signal resource set is {SRS resources: #1, #2, #3, CSI-RS resources: #1, #2, #3, #4}. (3) The sequence numbers of reference signal resources of the same type are continuous, and the sequence numbers of reference signal resources of different types are discontinuous. In addition, the protocol may further specify: in the third reference signal resource set, 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. Exemplarily, it is assumed that the protocol stipulates that the CSI-RS is arranged before the SRS, and the third reference signal resource set is {#1, #2, #3, #5, #6, #7, #8}. It can be understood that, in the third reference signal resource set, #1, #2, and #3 are serial numbers of CSI-RS resources, and #5, #6, #7, and #8 are serial numbers of SRS resources.

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

Wherein, the third reference signal resource set may multiplex the SRS resource set. 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 triggering process of the third reference signal resource set may also refer to the triggering process of the current SRS resource set. Repeat. In addition, it should be noted that, different from the current SRS resource set, the current SRS resource set does not include downlink reference signal resource information, such as CSI-RS resource identifiers, and multiplexed as the third reference signal resource set The SRS resource set includes downlink reference signal resource information. Optionally, in an implementation manner, the protocol may specify the identifiers of one or more specific SRS resource sets as the identifiers of the third reference signal resource set. Exemplarily, the identifier of the specific SRS resource set may be the minimum identifier (eg #0) allowed by the protocol, or the maximum identifier allowed by the protocol. In another implementation manner, an indication field is added to the configuration information of the SRS resource set, and the indication field is used to indicate whether the SRS resource set configured by the configuration information of the SRS resource set is multiplexed into the third reference signal resource set.

Alternatively, the third reference signal resource set may multiplex the CSI-RS resource set. 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 triggering process of the third reference signal resource set may also refer to the triggering process of the current CSI-RS resource set , and will not be repeated here. In addition, it should be noted that, unlike the current CSI-RS resource set, the current CSI-RS resource set does not include uplink reference signal resource information, such as SRS resource identifiers, and is multiplexed as a third reference signal resource The set of CSI-RS resources of the set includes information of uplink reference signal resources. Optionally, in an implementation manner, the protocol may specify the identifiers of one or more specific CSI-RS resource sets as the identifiers of the third reference signal resource set. Exemplarily, the identifier of the specific CSI-RS resource set may be the minimum identifier (eg #0) allowed by the protocol, or the largest identifier allowed by the protocol. In another implementation manner, 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 into the third reference signal Collection of resources.

Alternatively, the third reference signal resource set may be a newly defined reference signal resource set. In this case, the configuration process of the third reference signal resource set is as follows: the network device sends second configuration information to the terminal, where the second configuration information at least includes an identifier of the third reference signal resource set, one or more uplink reference signals The identifier of the resource, and the identifier of one or more downlink reference signal resources. Optionally, the second configuration information is carried in RRC signaling. The triggering process of the third reference signal resource set is as follows: the network device sends first trigger information to the terminal, where the first trigger information is used to activate 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 for A downlink reference signal resource in a third reference signal resource set is activated. 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 the trigger mode of the SRS resource. The third trigger information may multiplex the trigger mode of the CSI-RS resource.

Optionally, after the network device configures the terminal with reference signal resources required for each channel detection mode indicated by the detection capability information, the network device may explicitly indicate the channel used by the terminal in the downlink channel detection process. detection method. As shown in FIG. 5 , the channel sounding configuration method shown in FIG. 4 further includes step S301.

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

The above-mentioned indication information is used to indicate the target channel detection method. 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 method is the channel detection method used by the terminal in the downlink channel detection process.

Optionally, the indication information includes information of the target channel detection mode. For example, if the detection capability information indicates that the terminal supports the second detection mode and the third detection mode, the indication information may include information of the second detection mode to indicate that the target channel detection mode is the second detection mode; or, the indication information may include the third detection mode. Information about the detection mode to indicate that the target channel detection mode is the third detection mode. For another example, if the detection capability information indicates that the terminal supports the second detection mode, the indication information includes information of the second detection mode to indicate that the target channel detection mode is the second detection mode.

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

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

Optionally, in the case where the detection capability information indicates that the terminal supports only one channel detection mode, the network device may also not send indication information to the terminal to reduce signaling overhead. In this case, the target channel detection mode is the channel detection mode indicated by the detection capability information. For example, the detection capability information indicates that the terminal supports the first detection mode. In this case, the target channel detection mode is the first detection mode.

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

In addition, with reference to step S201, when the network device explicitly indicates the target detection method, the reference signal resources configured by the network device for the terminal may be more than the reference signal resources required for actual channel detection.

In addition, if the number of reference signal resources configured by the network device for the terminal is greater than the number of reference signal resources required by the actual channel, the terminal may select corresponding reference signal resources according to a preset rule. For example, the preset rule includes: selecting the corresponding reference signal resources from the reference signal resource set in descending order of serial numbers. The above is only an example of a preset rule, and this embodiment of the present application does not make any limitation on this.

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 reference signal resources for the terminal. The CSI-RS resource set associated with the first configuration information includes four 2-port CSI-RS resources, for example, CSI-RS resource #0 to CSI-RS resource set #3; the SRS resource associated with the first configuration information The set includes 4 2-port SRS resources, eg, 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 for downlink channel measurement according to its own antenna port information 2T4R, and feeds back 2port At the same time, the terminal selects SRS resource #0 to send the uplink reference signal, so that the network device determines the downlink channel information of the other 2 ports based on the 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 reference signal resources for the terminal. The CSI-RS resource set associated with the first configuration information includes four 2-port CSI-RS resources, for example, CSI-RS resource #0 to CSI-RS resource set #3; the SRS resource associated with the first configuration information The set includes 4 1-port SRS resources, eg, 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 for downlink channel measurement according to its own antenna port information 2T4R, and feeds back 2port At the same time, the terminal selects SRS resource #0 and SRS resource #1 to send the uplink reference signal, so that the network device determines the downlink channel information of the other 2 ports based on channel reciprocity. If the terminal receives the indication information, the indication information indicates that the target sounding mode is the first sounding method, the terminal selects CSI-RS resource #0 and CSI-RS resource #1 for downlink channel sounding, and feeds back downlink channel information of 4 ports.

Alternatively, the network device indicates the channel sounding method used by the terminal in the channel sounding process in an implicit manner. As shown in FIG. 6 , the channel sounding configuration method shown in FIG. 3 further includes step S401.

S401. The network device configures the terminal with reference signal resources required by the target channel detection mode, so as to instruct 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 detection method is the channel detection method used by the terminal in the channel detection 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 method for the terminal, and the third configuration information is also used to enable the terminal to determine the target Channel detection method.

If the target channel detection mode is the second detection mode, the network device 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 device configures one or more downlink reference signal resources for the terminal.

Optionally, the number of reference signal resources configured by the network device for the terminal is equal to the number of reference signal resources required for actual channel sounding. That is to say, the terminal can determine the target channel sounding method according to the type and quantity of the reference signal resources configured by the network device. After that, the terminal performs downlink channel detection using the target channel detection method.

For example, it is assumed that the antenna port information of the terminal is 1T8R, and the antenna port information of the terminal with antenna selection capability is 1T4R. If the network device instructs the terminal to use the third sounding method to perform downlink channel sounding, the network device may configure a third reference signal resource set for the terminal, where the third reference signal resource set includes four 1-port SRS resources and one 4-port SRS resource. CSI-RS resources. In this way, the terminal can determine that the target channel sounding method is the third sounding method according to the reference signal resource set, so that the terminal uses the third sounding method to perform downlink channel sounding.

For example, it is assumed that the antenna port information of the terminal is 2T2R. If the network equipment instructs the terminal to use the first sounding method to perform downlink channel sounding, the network equipment may configure one 2-port CSI-RS resource for the terminal. Alternatively, if the network device instructs the terminal to use the second detection method to perform downlink channel detection, the network device may configure one 2-port SRS resource for the terminal. Alternatively, if the terminal has the antenna selection capability, and the network device instructs the terminal to use the second detection method to perform downlink channel detection, the network device may configure two 1-port SRS resources 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 pre-configuration of the communication system, or defined in the standard, or after negotiation between the network device and the terminal. definite.

For the third sounding mode, a part of the downlink channel information is determined based on the measurement of the uplink reference signal, and the other part of the downlink channel information is determined based on the measurement of the downlink reference signal. (For convenience of description, the downlink channel information determined based on the measurement of the uplink reference signal is referred to as the first downlink channel information for short, and the downlink channel information determined based on the measurement of the downlink reference signal is referred to as the second downlink channel information for short). Since the power of the network equipment to send the downlink reference signal and the power of the terminal to send the uplink reference signal may be different, this leads to a deviation in the power gain between the first downlink channel information and the second downlink channel information, which will affect the network equipment. The accuracy of the downlink channel reconstructed according to the first downlink channel information and the second downlink channel information.

In order to solve the above technical problem, in the process that the terminal uses the third detection mode to detect the downlink channel, the terminal may use the method shown in FIG. 7 to report the downlink channel information. As shown in Figure 7, the method includes:

S501. The terminal performs channel estimation on a downlink reference signal, and determines a downlink channel matrix.

Wherein, for step S501, reference may be made to the prior art, which will not be repeated here.

S502. The terminal processes the downlink channel matrix to determine downlink channel information.

The downlink channel information includes: eigenvalues and eigenvectors corresponding to N first matrices, the first matrix is equal to the conjugate transpose vector of the second channel vector multiplied by the second channel vector, the second channel The vector is determined by dividing a first channel vector by an element at a preset position in the downlink channel matrix, where 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: a 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, and the second channel vector is the first channel vector The channel vector is determined by dividing an element at a preset position in the 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 of N second channel vectors.

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

The processing idea of the first downlink channel matrix is briefly introduced below.

采用第一探测方式确定的下行信道矩阵为

其中，n为接收天线端口数，m为发送天线端口数。Suppose, the downlink channel matrix determined by the second detection method is

The downlink channel matrix determined by the first detection method is:

Among them, n is the number of receiving antenna ports, and m is the number of transmitting antenna ports.

The H _srs is processed, for example, an element (eg h ₁₁ ) is extracted from the H _srs to determine H' _srs , _which is no longer affected by the power gain of the terminal and network equipment.

Exemplary,

Similarly, G _csi-rs is processed, for example, an element in the same position as the element extracted by H _srs is extracted from G _csi-rs (for example, the element extracted by H _srs is h ₁₁ , then G _csi-rs The extracted element is g ₁₁ ), and G′ _csi-rs is determined, and G′ _csi-rs is no longer affected by the power gain of the terminal and the network device.

Exemplary,

In this way, [g′ _n1 g′ _n1 ... g′ _nm ]=[h′ _n1 h′ _n2 ... h′ _nm ] without considering the error of the channel estimation.

In the case of adopting the third detection method, the channel vectors determined based on channel reciprocity are H ₁ , ..., H _j , and the channel vectors determined based on codebook feedback are G _j+1 , ..., G _n . where j is less than n. In this case, when the network device performs channel reconstruction, the matrix that is not affected by the power gain can be determined by using H' ₁ , ..., H' _j , and G' _j+1 , ..., G' _n . :

是H′₁的共轭转置向量，

是

的共轭转置向量，

是G′_j+1的共轭转置向量，

是G′_n的共轭转置向量。in,

is the conjugate transpose vector of H′ ₁ ,

Yes

The conjugate transpose vector of ,

is the conjugate transpose vector of G′ _j+1 ,

is the conjugate transpose vector of _G'n .

Therefore, in the case of adopting the third detection method, the terminal actually needs to report

为例，终端对

进行特征值分解，确定U*AU，从而终端向网络设备上报特征向量U以及特征值。其中，U^*为特征向量U的共轭转置向量。Λ是对角矩阵，其对角线上的元素为对应的特征值。Example 1, reporting through the terminal

For example, the terminal pair

The eigenvalue is decomposed to determine U*AU, so that the terminal reports the eigenvector U and the eigenvalue to the network device. where U ^* is the conjugate transpose vector of the eigenvector U. Λ is a diagonal matrix whose elements on the diagonal are the corresponding eigenvalues.

Example 2, taking the terminal reporting G' _n as an example, the terminal reports an element (eg g' _n1 ) in G' _n to the network device, and G' _n after extracting the element. For example, the terminal reports g' _n1 to the network device, and

As an implementation manner, step S501 includes the following steps: (1) Divide 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 _j+1 , ..., G _n in the above analysis, and the N second channel vectors are G' _j+1 , ... in the above analysis ..., _G'n . (2) For each second channel vector, perform eigenvalue decomposition 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 vector. Therefore, the downlink channel information includes: eigenvalues and eigenvectors corresponding to the N first matrices.

It can be understood that the preset position is specified by a protocol or pre-configured by the communication system.

As another implementation manner, step S501 includes the following steps: (1) Divide 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, divide the N second channel vectors by the power phase parameter to determine N corresponding third channel vectors. The power phase difference parameter may be one element of the N second channel vectors. Therefore, the downlink channel information includes: a power phase difference parameter, and N third channel vectors.

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

Optionally, if the position of the power phase difference parameter in the N second channel vectors is not predefined, the downlink channel information may further include: position information, where the position information is used to indicate that the power phase difference parameter is in the N second channel vectors. position in the channel vector.

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

In this way, the network device can reconstruct a more accurate channel based on the downlink channel information reported by the terminal, so as to avoid the influence of different power gains between the terminal and the network device.

The foregoing mainly introduces the solutions provided by the embodiments of the present application from the perspective of interaction between each network element. It can be understood that, each network element, such as a network device and a terminal, in order to implement the above-mentioned functions, it includes corresponding hardware structures and/or software modules for performing each function. Those skilled in the art should easily realize that the present application can be implemented in hardware or a combination of hardware and computer software with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

In this embodiment of the present application, the network device and the terminal may be divided into functional modules according to the foregoing method examples. For example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. . The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. It should be noted that, the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation. The following is an example of dividing each function module corresponding to each function to illustrate:

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 . The processing module 301 is configured to support the terminal to perform step S101 in FIG. 3 , steps S501 and S502 in FIG. 7 , and/or other processes used in the technical solutions described herein. The communication module 302 is used 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 for Other processes of the technical solutions described herein. All relevant contents of the steps involved in the foregoing method embodiments can be cited in the functional descriptions of the corresponding functional modules, which will not be repeated here.

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 , the processing module 301 in FIG. 8 may be implemented by the processor 101 in FIG. 2 , This embodiment of the present application does not impose any limitation on this.

An embodiment of the present application further provides a communication device, which is configured to execute the methods shown in FIGS. 3-7 . As a possible product form, the communication device is realized by a processor and a communication interface. As another possible product form, the communication device is realized by a logic circuit, an input interface and an output interface.

Embodiments of the present application further provide a computer-readable storage medium, where computer instructions are stored in the computer-readable storage medium; when the computer-readable storage medium runs on the terminal shown in FIG. 2 , the terminal is made to execute The method shown in Figure 3-7. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center is carried out by wire (eg, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or data storage devices including one or more servers, data centers, etc. that can be integrated with the medium. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media, or semiconductor media (eg, solid state disks (SSDs)), and the like.

An embodiment of the present application further provides a chip system, where the chip system includes a processor, and is configured to support a terminal to implement the methods shown in FIGS. 3-7 . In this embodiment of the present application, the processor may be a dedicated processor or a general-purpose processor. In one possible design, the system-on-a-chip also includes memory. This memory is used to save the necessary program instructions and data of the terminal. Of course, the memory may not be in the system-on-chip. The chip system may be composed of chips, or may include chips and other discrete devices, which are 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 , enables the terminal to execute the methods shown in FIGS. 3-7 .

The terminals, computer storage media, chip systems, and computer program products provided by the above embodiments of the present application are all used to execute the methods provided above. Therefore, for the beneficial effects that can be achieved, reference may be made to the beneficial effects corresponding to the methods provided above. The effect will not be repeated here.

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 . Wherein, the communication module 401 is used to support the network device to perform step S102 in FIG. 3 , step S201 in FIG. 4 , step S301 in FIG. 5 , step S503 in FIG. 7 , and/or for the technical solutions described herein. other processes. The processing module 402 is used to support the network device to perform step S103 in FIG. 3 , and/or other processes used in the technical solutions described herein. All relevant contents of the steps involved in the foregoing method embodiments can be cited in the functional descriptions of the corresponding functional modules, which will not be repeated here.

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 , the embodiments of the present application do not impose any limitation on this.

An embodiment of the present application further provides a communication device, which is configured to execute the methods shown in FIGS. 3-7 . As a possible product form, the communication device is realized by a processor and a communication interface. As another possible product form, the communication device is realized by a logic circuit, an input interface and an output interface.

Embodiments of the present application further provide a computer-readable storage medium, where instructions are stored in the computer-readable storage medium; when the computer-readable storage medium runs on the network device shown in FIG. 2, the network device Execute the method shown in Figure 3-7.

An embodiment of the present application further provides a chip system, where the chip system includes a processor, and is configured to support a network device to implement the methods shown in FIGS. 3-7 . In this embodiment of the present application, the processor may be a dedicated processor or a general-purpose processor. In one possible design, the system-on-a-chip also includes memory. The memory is used to save the necessary program instructions and data of the network device. Of course, the memory may not be in the system-on-chip. The chip system may be composed of chips, or may include chips and other discrete devices, which are 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 running on the network device shown in FIG. 2 , enables the network device to execute the methods shown in FIGS. 3-7 .

The network equipment, computer storage medium, chip system, and computer program product provided by the above embodiments of the present application are all used to execute the methods provided above. Therefore, for the beneficial effects that can be achieved, reference may be made to the corresponding methods provided above. The beneficial effects will not be repeated here.

An embodiment of the present application further provides a communication system, where the communication system includes a terminal and a network device, and the network device and the terminal are configured to execute the methods shown in FIGS. 3-7 .

Although the application is described herein in conjunction with the various embodiments, those skilled in the art will understand and understand, by reviewing the drawings, the disclosure, and the appended claims, in practicing the claimed application. Other variations of the disclosed embodiments are implemented. In the claims, the word "comprising" does not exclude other components or steps, and "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 these measures cannot be combined to advantage.

Although the application has been described in conjunction with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made therein without departing from the spirit and scope of the application. Accordingly, this specification and drawings are merely exemplary illustrations of the application as defined by the appended claims, and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of this application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these 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 also intended to include these modifications and variations.

Claims (34)

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; or,

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;

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.

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; or,

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;

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.

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;

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.

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;

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.

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;

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;

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.

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;

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 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.

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; or,

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;

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.

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;

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.

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;

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.

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;

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;

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.

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;

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.

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; or,

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;

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.

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;

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.

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;

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.

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;

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;

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.

32. The network device of claim 27 or 28,

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

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.

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.

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