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CN-122001414-A - Sensing method and corresponding device

CN122001414ACN 122001414 ACN122001414 ACN 122001414ACN-122001414-A

Abstract

The application provides a sensing method which can be applied to a communication system of communication sensing integrated ISAC. The method comprises the steps that a central node can acquire a joint precoding matrix, a first precoding matrix is determined for a transmitting end based on the joint precoding matrix, and a second precoding matrix is determined for a receiving end, so that the transmitting end uses the first precoding matrix to precode a sensing signal when processing the sensing signal, and the receiving end uses the second precoding matrix to precode an echo signal when processing the echo signal, and the joint precoding matrix can be matched with sensing requirements or sensing performance, so that the sensing signal is processed by adopting the first precoding matrix, and the sensing performance can be improved after the echo signal is processed by adopting the second precoding matrix.

Inventors

  • YU YANG
  • LUO JIAJIN
  • HE JIA
  • PENG XIAOHUI

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20241104

Claims (20)

  1. 1. A method of sensing, comprising: acquiring a joint precoding matrix; The method comprises the steps of sending information of a first precoding matrix and/or information of a second precoding matrix, wherein the information of the first precoding matrix is used for indicating the first precoding matrix, the information of the second precoding matrix is used for indicating the second precoding matrix, the first precoding matrix and the second precoding matrix are obtained based on the combined precoding matrix, the first precoding matrix is used for precoding of sensing signals, and the second precoding matrix is used for precoding of echo signals of the sensing signals.
  2. 2. The method of claim 1, wherein the obtaining the joint precoding matrix comprises: Acquiring first information, wherein the first information is used for indicating the joint precoding matrix; and acquiring the joint precoding matrix according to the first information.
  3. 3. The method of claim 2, wherein the obtaining the first information comprises: and acquiring echo signals and/or sensing results, wherein the echo signals and/or the sensing results are used for determining the first information.
  4. 4. A method according to claim 2 or 3, wherein the first information comprises at least one of a parameter of scattering intensity, a parameter of channel intensity, or a performance index of a point spread function.
  5. 5. The method according to any of claims 1-4, wherein the information of the first precoding matrix comprises at least one of an index of the first precoding matrix, a weighting parameter of an antenna array corresponding to the first precoding matrix, or an element of the first precoding matrix; the information of the second precoding matrix includes at least one of an index of the second precoding matrix, a weighting parameter of an antenna array corresponding to the second precoding matrix, or an element of the second precoding matrix.
  6. 6. The method according to any one of claims 1-5, further comprising: And sending first indication information, wherein the first indication information is used for indicating to trigger aperiodic or periodic execution of a sensing process, and stopping when the sensing process is executed until a cut-off condition is met if the sensing process is executed periodically, and the sensing process comprises the steps of acquiring a joint precoding matrix and sending information of the first precoding matrix and/or information of a second precoding matrix.
  7. 7. The method according to any of claims 1-6, wherein the joint precoding matrix and the first and second precoding matrices satisfy the following first relation: Wherein W TR represents the joint precoding matrix, W T represents the first precoding matrix, Representing a kronecker product operation or a convolution operation, W R representing the second precoding moment.
  8. 8. The method of claim 7, wherein W T is derived by a second relationship or W R is derived by a third relationship, wherein, The second relation is [ W T ,r]＝deconv(W TR ,W R ], argmin (r) Wherein deconv (W TR ,W R ) represents deconvolution or deconvolution of the first relationship product given W TR and W R , Argmin (r) represents a function for solving r to be a minimum value, and [ W T , r ] represents a least squares solution W T corresponding to the time when r is minimum; The third relation is [ W R ,r]＝deconv(W TR ,W T ], argmin (r) Wherein deconv (W TR ,W T ) represents deconvolution or deconvolution of the first relationship product given W TR and W T , Argmin (r) represents a function that solves for r to a minimum value, [ W R , r ] represents the least squares solution W R corresponding to the time when rmin.
  9. 9. The method of claim 7, wherein W T and W R are the values of the fourth relationship that are the smallest, wherein, The fourth relation is:
  10. 10. a method of sensing, comprising: Receiving information of a first precoding matrix and/or information of a second precoding matrix, wherein the information of the first precoding matrix is used for indicating the first precoding matrix, the information of the second precoding matrix is used for indicating the second precoding matrix, and the first precoding matrix and the second precoding matrix are obtained based on a joint precoding matrix; And/or precoding echo signals of the sensing signals according to the second precoding matrix.
  11. 11. The method of claim 10, wherein the information of the first precoding matrix comprises at least one of an index of the first precoding matrix, a weighting parameter of an antenna element corresponding to the first precoding matrix, or an element of the first precoding matrix; the information of the second precoding matrix includes at least one of an index of the second precoding matrix, a weighting parameter of an antenna array corresponding to the second precoding matrix, or an element of the second precoding matrix.
  12. 12. The method according to claim 10 or 11, characterized in that before receiving the information of the first precoding matrix and/or the information of the second precoding matrix, the method further comprises: and transmitting at least one of echo signals, sensing results or first information, wherein the echo signals and/or the sensing results are used for determining the first information, and the first information is used for indicating the joint precoding matrix.
  13. 13. The method of claim 12, wherein the first information comprises at least one of a parameter of scattering intensity, a parameter of channel intensity, or a performance index of a point spread function.
  14. 14. The method according to claim 12 or 13, characterized in that the method further comprises: The method comprises the steps of receiving first indication information, wherein the first indication information is used for indicating triggering aperiodic or periodic execution of a sensing procedure, and stopping the sensing procedure when the periodic execution is carried out and the cut-off condition is met, the sensing procedure comprises the steps of sending a sensing signal, receiving information of a first precoding matrix and precoding the sensing signal according to the first precoding matrix, or the sensing procedure comprises the steps of receiving at least one of an echo signal, sending the echo signal, a sensing result or the first information, receiving information of a second precoding matrix and precoding the echo signal of the sensing signal according to the second precoding matrix.
  15. 15. The method according to any of claims 10-14, wherein the joint precoding matrix and the first and second precoding matrices satisfy the following first relation: Wherein W TR represents the joint precoding matrix, W T represents the first precoding matrix, Representing a kronecker product operation or a convolution operation, W R representing the second precoding moment.
  16. 16. The method of claim 15, wherein W T is derived by a second relationship or W R is derived by a third relationship, wherein, The second relation is [ W T ,r]＝deconv(W TR ,W R ], argmin (r) Wherein deconv (W TR ,W R ) represents deconvolution or deconvolution of the first relationship product given W TR and W R , Argmin (r) represents a function for solving r to be a minimum value, and [ W T , r ] represents a least squares solution W T corresponding to the time when r is minimum; The third relation is [ W R ,r]＝deconv(W TR ,W T ], argmin (r) Wherein deconv (W TR ,W T ) represents deconvolution or deconvolution of the first relationship product given W TR and W T , Argmin (r) represents a function that solves for r to a minimum value, [ W R , r ] represents the least squares solution W R corresponding to the time when rmin.
  17. 17. The method of claim 15, wherein W T and W R are the values of the fourth relationship that are the smallest, wherein, The fourth relation is:
  18. 18. A communication device comprising means for performing the method of any one of claims 1 to 9 or means for performing the method of any one of claims 10 to 17.
  19. 19. A communication device comprising at least one processor for performing the method of any one of claims 1 to 9 or for performing the method of any one of claims 10 to 17.
  20. 20. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a computer program or instructions which, when executed by a communication device, implements the method according to any of claims 1 to 9 or implements the method according to any of claims 10 to 17.

Description

Sensing method and corresponding device Technical Field The application relates to the technical field of communication, in particular to a sensing method and a corresponding device. Background In a communication scenario, precoding (precoding) is an important signal processing technique, which improves the transmission efficiency, interference immunity and signal quality of a signal in a wireless channel by performing linear transformation on a transmission signal. In a communication scenario, precoding techniques are applied only at the transmitting end, whether uplink or downlink. In the sensing scenario, the sensing performance of the system is determined by the transmitting end and the receiving end, so the precoding technology in the current communication scenario is not suitable for the sensing scenario, and the precoding technology in the sensing scenario is needed. Disclosure of Invention The application provides a sensing method which is used for improving sensing performance. The application also provides a corresponding apparatus, a computer readable storage medium, a computer program product, etc. The first aspect of the present application provides a sensing method, which may be applied to a first communication device, where the first communication device may refer to a device itself, a component in the device (e.g. a processor, a circuit, a chip, or a system-on-a-chip, etc.), or a logic module or software capable of implementing all or part of the functions of the first communication device. The circuit or chip responsible for the communication function may be, for example, a modem (modem) chip, also called a baseband (baseband) chip, or a system on chip (SoC) chip or a system in package (SYSTEMIN PACKAGE, SIP) chip including a modem core. The device may be a network device or a terminal device, which may include an access network device or a core network device. The method comprises the steps of obtaining a joint precoding matrix, and sending information of a first precoding matrix and/or information of a second precoding matrix to a second communication device, wherein the information of the first precoding matrix is used for indicating the first precoding matrix, the information of the second precoding matrix is used for indicating the second precoding matrix, the first precoding matrix and the second precoding matrix are obtained based on the joint precoding matrix, the first precoding matrix is used for sensing precoding of signals, and the second precoding matrix is used for sensing precoding of echo signals of the signals. In the present application, the first communication device may be a central node, a Sensing Function (SF) network element, a sensing management function (SENSING MANAGEMENT function, SMF) network element, a transmitting node, or a device corresponding to a receiving node, etc. The central node may be a node configured with a sensing parameter for a transmitting end of the sensing signal or a receiving end of the sensing signal, and/or a node summarizing sensing results. The central node may be a network device or a chip in a network device, although the central node may be a device of other forms. The SF/SMF network element may be a node for perceptual function management, and the SF/SMF network element may have the same or similar function and morphology as the central node. The transmitting node refers to a node for transmitting a sensing signal, which may be also referred to as a transmitting end, and the receiving node refers to a node for receiving an echo signal of the sensing signal, which may be also referred to as a receiving end. The transmitting node and the receiving node may be access network devices or terminal devices. In the application, the second communication device can be a transmitting node, a receiving node or a device corresponding to a sensing node, wherein the sensing node is a node integrating a transmitting end of a sensing signal and a receiving end of an echo signal. In the application, the transmitting node, the receiving node or the sensing node can be the access network equipment or the chip in the access network equipment, the terminal equipment or the chip in the terminal equipment. In the application, the information of the first precoding matrix and/or the information of the second precoding matrix can comprise three cases, if the first communication device is a receiving node, the information of the first precoding matrix can be sent to the transmitting node, if the first communication device is a transmitting node, the information of the second precoding matrix can be sent to the receiving node, if the first communication device is a central node or an SF network element/SMF network element, the information of the first precoding matrix can be sent to the transmitting node, the information of the second precoding matrix can be sent to the receiving node, or the information of the first precoding matrix and the information of the