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CN-122001413-A - Sensing method and corresponding device

CN122001413ACN 122001413 ACN122001413 ACN 122001413ACN-122001413-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, wherein the joint precoding matrix meets the minimum redundant array requirement, and therefore the sensing scheme provided by the application can achieve better sensing performance with fewer antenna resources.

Inventors

  • YU YANG
  • PENG XIAOHUI
  • ZHOU BAOJIAN
  • HE JIA

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20241104

Claims (19)

  1. 1. A method of sensing, comprising: Acquiring a joint precoding matrix, wherein the joint precoding matrix meets the minimum redundant array requirement of M/N, M is the number of array elements of the minimum redundant array, N is the number of array elements with equivalent uniform aperture reached by the minimum redundant array, both M and N are positive integers, and M is smaller than N; 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 according to claim 1, wherein the method further comprises: Decomposing the joint precoding matrix into the first precoding matrix and the second precoding matrix according to a decomposition principle, wherein the decomposition principle comprises at least one of the following: maximizing signal-to-interference-and-noise ratio; minimizing the aperture of a transmitting array or minimizing the aperture of a receiving array, wherein the transmitting array consists of array elements and the receiving array consists of array elements; At least one of the total number of transmit and receive arrays is minimized.
  3. 3. The method according to claim 1 or 2, characterized in that the M/N is related to the joint precoding matrix satisfying the minimum redundancy as follows: M/N Joint precoding matrix meeting minimum redundancy 5/10 {0,1,4,7,9} 6/14 {0,1,6,9,11,13} 7/18 {0,1,4,10,12,15,17} 8/24 {0,1,4,10,16,18,21,23} 9/30 {0,1,4,10,16,22,24,27,29} 10/37 {0,1,3,6,13,20,27,31,35,36} 11/44 {0,1,3,6,13,20,27,34,38,42,43} 12/51 {0,1,3,6,13,20,27,34,41,45,49,50} 13/59 {0,1,5,8,12,21,30,39,48,53,54,56,58} 14/69 {0,1,2,8,15,16,26,36,46,56,59,63,65,68} 15/80 {0,1,2,5,10,15,26,37,48,59,65,71,77,78,79} 15/64 {0,1,3,6,7,9,13,14,16,40,41,43,60,61,63} 16/91 {0,1,2,5,10,15,26,37,48,59,70,76,82,88,89,90} 17/102 {0,1,2,5,10,15,26,37,48,59,70,81,87,93,99,100,101} 。
  4. 4. The method of claim 2, wherein the decomposition principle, the joint precoding matrix, and the relationship of the first precoding matrix and the second precoding matrix are as follows: 。
  5. 5. The method according to any of claims 1-4, wherein the obtaining a joint precoding matrix comprises: Acquiring first information, wherein the first information is used for determining the M and the N; and acquiring the joint precoding matrix according to the first information.
  6. 6. The method of claim 5, 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.
  7. 7. The method according to any of claims 1-6, 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.
  8. 8. The method according to any one of claims 1-7, 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.
  9. 9. 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, the first precoding matrix and the second precoding matrix are obtained based on a combined precoding matrix, the combined precoding matrix meets the minimum redundancy array requirement of M/N, M is the number of array elements of the minimum redundancy array, N is the number of array elements of equivalent uniform aperture reached by the minimum redundancy array, both M and N are positive integers, and M is smaller than N; And/or precoding echo signals of the sensing signals according to the second precoding matrix.
  10. 10. The method of claim 9, wherein the M/N is related to a joint precoding matrix that satisfies the minimum redundancy as follows: M/N Joint precoding matrix meeting minimum redundancy 5/10 {0,1,4,7,9} 6/14 {0,1,6,9,11,13} 7/18 {0,1,4,10,12,15,17} 8/24 {0,1,4,10,16,18,21,23} 9/30 {0,1,4,10,16,22,24,27,29} 10/37 {0,1,3,6,13,20,27,31,35,36} 11/44 {0,1,3,6,13,20,27,34,38,42,43} 12/51 {0,1,3,6,13,20,27,34,41,45,49,50} 13/59 {0,1,5,8,12,21,30,39,48,53,54,56,58} 14/69 {0,1,2,8,15,16,26,36,46,56,59,63,65,68} 15/80 {0,1,2,5,10,15,26,37,48,59,65,71,77,78,79} 15/64 {0,1,3,6,7,9,13,14,16,40,41,43,60,61,63} 16/91 {0,1,2,5,10,15,26,37,48,59,70,76,82,88,89,90} 17/102 {0,1,2,5,10,15,26,37,48,59,70,81,87,93,99,100,101} 。
  11. 11. The method according to claim 9 or 10, wherein the first precoding matrix and the second precoding matrix are obtained by decomposing the joint precoding matrix based on a decomposition principle, and the decomposition principle, the joint precoding matrix, and the relation between the first precoding matrix and the second precoding matrix can be as follows:
  12. 12. The method according to any of claims 9-11, 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.
  13. 13. The method according to any of claims 9-12, 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 determining the M and the N.
  14. 14. The method of claim 13, 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.
  15. 15. The method according to claim 13 or 14, 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.
  16. 16. A communication device comprising means for performing the method of any one of claims 1 to 8 or means for performing the method of any one of claims 9 to 15.
  17. 17. A communication device comprising at least one processor for performing the method of any one of claims 1 to 8 or for performing the method of any one of claims 9 to 15.
  18. 18. 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 8 or implements the method according to any of claims 9 to 15.
  19. 19. A computer program product comprising a computer program or instructions which, when executed by a computer, performs the method of any one of claims 1 to 8 or performs the method of any one of claims 9 to 15.

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 achieving better sensing performance by using fewer antenna (array element) resources. 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, wherein the joint precoding matrix meets the requirement of a minimum redundant array of M/N, M is the number of array elements of the minimum redundant array, N is the number of array elements with equivalent uniform aperture achieved by the minimum redundant array, M and N are both positive integers, M is smaller than N, 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 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 device corresponding to a sensing management function (SENSING MANAGEMENT function, SF) network element, a transmitting node, or 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 network element or the SMF network element may be a node for perceived function management, and the function and morphology of the SF network element or the SMF network element may be the same as or similar to 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 joint pre-coding matrix meeting the requirement of the minimum redundant array is related to M and N, and M/N can be understood as the effect that N array elements can be used for realizing equivalent uniform aperture by using the minimum redundant array designed by M array elements. A joint precoding matrix that meets the minimum redundancy m