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CN-122002349-A - Communication method and communication device

CN122002349ACN 122002349 ACN122002349 ACN 122002349ACN-122002349-A

Abstract

A communication method and a communication device comprise the steps that a first communication device determines time-frequency resources respectively used for determining the background noise and the out-of-band interference of a first cell, and sends a measurement cooperation application of the background noise and the out-of-band interference to a second communication device through a first message, so that signal transmission is not carried out at a time domain position corresponding to the first time-frequency resource for measuring the background noise in a neighboring cell of the first cell, and signal transmission is carried out at a time domain position corresponding to the second time-frequency resource for measuring the out-of-band interference in the neighboring cell of the first cell, so that the background noise and the out-of-band interference of the first cell can be accurately obtained by the first communication device, and the intensity of the out-of-band interference generated by the communication device in an NTN (network) to the first cell is accurately observed.

Inventors

  • LUO HEJIA
  • YU TIANHANG
  • WANG XIAOLU
  • WANG YU

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20241108

Claims (20)

  1. 1. A communication method applied to a first communication device, the method comprising: Determining a first time-frequency resource and a second time-frequency resource, wherein the first time-frequency resource is used for measuring the background noise of a first cell, the second time-frequency resource is used for measuring the out-of-band interference of the first cell, and the first cell is a cell served by the first communication equipment; A first message is sent to a second communication device, the first message is used for indicating that signal transmission is not performed in at least one second cell in a time domain position corresponding to the first time-frequency resource, and signal transmission is performed in the at least one second cell in the time domain position corresponding to the second time-frequency resource, the at least one second cell is a cell adjacent to the first cell frequency point, Wherein the second communication device is a communication device in a non-terrestrial network NTN.
  2. 2. The method of claim 1, wherein the first message includes at least one of the following information: Time domain position information corresponding to the first time-frequency resource, time domain position information corresponding to the second time-frequency resource, time sequence information of the first cell, frequency point information of the first cell or service position information of the first communication equipment, The frequency point information of the first cell and the service position information of the first communication equipment are used for determining the at least one second cell; The time domain position information corresponding to the first time-frequency resource, the time sequence information of the first cell and the service position information of the first communication equipment are used for determining that signal transmission is not performed in the at least one second cell at the time domain position corresponding to the first time-frequency resource; the time domain position information corresponding to the second time-frequency resource, the time sequence information of the first cell and the service position information of the first communication equipment are used for determining that signal transmission is performed in the at least one second cell at the time domain position corresponding to the second time-frequency resource.
  3. 3. The method of claim 2, wherein the second time-frequency resources are divided into at least one group of sub-frequency resources, the at least one second cell is divided into at least one group of cells, each group of sub-frequency resources corresponds to one group of cells, The sub-frequency resource group is used for measuring out-of-band interference of a corresponding cell group to the first cell.
  4. 4. A method according to claim 3, characterized in that the at least one second cell is divided into the at least one cell group based on at least one of the following parameters: the track height of the NTN device corresponding to the at least one second cell, the frequency point of the at least one second cell, or the power of the NTN device corresponding to the at least one second cell.
  5. 5. The method according to any one of claims 1 to 4, further comprising: And receiving an acknowledgement message from the second communication device, wherein the acknowledgement message is used for indicating that the second communication device agrees to the first time-frequency resource for measuring the background noise of a first cell, and the second time-frequency resource is used for measuring the out-of-band interference of the first cell.
  6. 6. The method according to any one of claims 1 to 5, further comprising: and transmitting the first time-frequency resource and the second time-frequency resource to third communication equipment.
  7. 7. The method according to any one of claims 1 to 6, wherein the first message further includes first indication information and second indication information, the first indication information is used for indicating that the first time-frequency resource is used for measuring the noise floor of the first cell, and the second indication information is used for indicating that the second time-frequency resource is used for measuring the out-of-band interference of the first cell.
  8. 8. The method according to any of claims 1 to 7, wherein the first time-frequency resources comprise first zero-power channel state indication reference signal, ZP-CSI-RS, resources or first non-zero-power channel state indication reference signal, NZP-CSI-RS, resources; the second time-frequency resource includes a second ZP-CSI-RS resource or a second NZP-CSI-RS resource.
  9. 9. A communication method applied to a second communication device, the method comprising: Receiving a first message from a first communication device; Determining a first time-frequency resource and a second time-frequency resource according to the first message, wherein the first time-frequency resource is used for measuring the background noise of a first cell, the second time-frequency resource is used for measuring the out-of-band interference of the first cell, and the first cell is a cell served by the first communication equipment; The time domain position corresponding to the first time-frequency resource is not used for signal transmission of at least one second cell, and the time domain position corresponding to the second time-frequency resource is used for signal transmission of at least one second cell, wherein the at least one second cell is a cell adjacent to the first cell frequency point.
  10. 10. The method of claim 9, wherein the first message includes at least one of the following information: Time domain position information corresponding to the first time-frequency resource, time domain position information corresponding to the second time-frequency resource, time sequence information of the first cell, frequency point information of the first cell or service position information of the first communication equipment, The method further comprises the steps of: Determining the at least one second cell according to the frequency point information of the first cell and the service position information of the first communication equipment; The determining a first time-frequency resource and a second time-frequency resource according to the first message includes: Determining that the at least one second cell does not transmit signals at the time domain position corresponding to the first time-frequency resource according to the time domain position information corresponding to the first time-frequency resource, the time sequence information of the first cell and the service position information of the first communication equipment; And determining that the at least one second cell transmits signals at the time domain position corresponding to the second time-frequency resource according to the time domain position information corresponding to the second time-frequency resource, the time sequence information of the first cell and the service position information of the first communication equipment.
  11. 11. The method of claim 10, wherein the second time-frequency resources are divided into at least one group of sub-frequency resources, the at least one second cell is divided into at least one group of cells, each group of sub-frequency resources corresponds to one group of cells, The sub-frequency resource group is used for measuring out-of-band interference of a corresponding cell group to the first cell.
  12. 12. The method of claim 11, wherein the method further comprises: dividing the at least one second cell into the at least one cell group based on at least one of the following parameters: the track height of the NTN device corresponding to the at least one second cell, the frequency point of the at least one second cell, or the power of the NTN device corresponding to the at least one second cell.
  13. 13. The method according to any one of claims 9 to 12, further comprising: Transmitting an empty signal or not transmitting a signal to third communication equipment at a time domain position corresponding to the first time-frequency resource; And transmitting a signal to the third communication equipment at the time domain position corresponding to the second time-frequency resource.
  14. 14. The method according to any one of claims 9 to 13, further comprising: And sending an acknowledgement message to the first communication device, wherein the acknowledgement message is used for indicating that the second communication device agrees to the first time-frequency resource for measuring the background noise of a first cell, and the second time-frequency resource is used for measuring the out-of-band interference of the first cell.
  15. 15. The method according to any one of claims 9 to 14, wherein the first message further includes first indication information and second indication information, the first indication information is used for indicating that the first time-frequency resource is used for measuring the noise floor of the first cell, and the second indication information is used for indicating that the second time-frequency resource is used for measuring the out-of-band interference of the first cell.
  16. 16. The method according to any of claims 9 to 15, wherein the first time-frequency resources comprise first zero-power channel state indication reference signal, ZP-CSI-RS, resources or first non-zero-power channel state indication reference signal, NZP-CSI-RS, resources; the second time-frequency resource includes a second ZP-CSI-RS resource or a second NZP-CSI-RS resource.
  17. 17. A communication method applied to a third communication device, the method comprising: Receiving a first time-frequency resource and a second time-frequency resource from a first communication device, wherein the first time-frequency resource is used for measuring the background noise of a first cell, the second time-frequency resource is used for measuring the out-of-band interference of the first cell, and the first cell is a cell served by the first communication device; Measuring the background noise of the first cell on the first time-frequency resource; and measuring out-of-band interference of the first cell on the first time-frequency resource.
  18. 18. A communication device, characterized in that the device comprises means for performing the method according to any of claims 1 to 8.
  19. 19. A communication device, characterized in that the device comprises means for performing the method of any of claims 9 to 16.
  20. 20. A communication device, characterized in that the device comprises means for performing the method of claim 17.

Description

Communication method and communication device Technical Field The embodiment of the application relates to the technical field of communication, and more particularly relates to a communication method and a communication device. Background Compared with a ground communication network (TERRESTRIAL NETWORKS, TN), the non-ground communication network (non-TERRESTRIAL NETWORKS, NTN) has the characteristics of large coverage area, flexible networking and the like, and can realize seamless coverage of a global network. NTN can be considered either as a complement to the current terrestrial communication network or as a stand-alone, stand-alone communication system providing subscribers with global high-speed network access. The NTN communication includes networking by using an unmanned plane, an aerial platform, or a satellite, etc., and provides services such as data transmission, voice communication, etc. for the terminal. From the current protocol specification, an Adjacent Channel Leakage Ratio (ACLR) index of the TN is far more strict than that of the NTN, and for a satellite-ground coexisting system, the NTN communication system may cause great interference to the TN communication system of the adjacent frequency band. Therefore, how to determine the adjacent channel interference condition of the NTN communication system, so that the NTN can adjust the signal strength according to the interference condition to reduce the interference to the TN communication system of the adjacent frequency band becomes a problem to be solved. Disclosure of Invention The application provides a communication method for determining the interference condition of an NTN communication system to a communication system of an adjacent frequency band. In a first aspect, a method of communication is provided. The method may be performed by the first communication device, and unless otherwise specified, the "first communication device" in the present application may refer to the first communication device itself (e.g., a communication device in an NTN communication system or a communication device in a TN communication system, etc.), a component in the first communication device (e.g., a processor, a chip, or a chip system, etc.), such as a circuit or a chip responsible for a communication function in a communication device in an NTN or a communication device in a TN (e.g., a Modem chip, also called a baseband chip, or a system on chip (SoC) chip or a system-in-package (SYSTEMIN PACKAGE, SIP) chip), or may be a logic module or software capable of implementing all or part of the functions of the first communication device. For convenience of description, an example of the first communication apparatus execution will be described below. The communication method comprises the steps of determining a first time-frequency resource and a second time-frequency resource, wherein the first time-frequency resource is used for measuring the background noise of a first cell, the second time-frequency resource is used for measuring the out-of-band interference of the first cell, and the first cell serves the first communication equipment. And sending a first message to a second communication device, where the first message is used to indicate that signal transmission is not performed in at least one second cell in a time domain position corresponding to the first time-frequency resource, and signal transmission is performed in the at least one second cell in the time domain position corresponding to the second time-frequency resource, and the at least one second cell is a cell adjacent to the first cell frequency point, where the second communication device is a communication device in a non-terrestrial network NTN. Based on the technical scheme, the first communication device can determine time-frequency resources for measuring the background noise and the out-of-band interference of the first cell respectively, and send a measurement cooperation application of the background noise and the out-of-band interference to the second communication device through the first message, so that signal transmission is not performed at a time domain position corresponding to the first time-frequency resource for measuring the background noise in at least one adjacent cell of the first cell, and signal transmission is performed at a time domain position corresponding to the second time-frequency resource for measuring the out-of-band interference in at least one adjacent cell of the first cell, so that the first communication device can accurately acquire the background noise of the first cell and the out-of-band interference of the at least one adjacent cell to the first cell, and the strength of the out-of-band interference generated by the communication device in the NTN to the first cell is accurately observed. With reference to the first aspect, in some implementations of the first aspect, the first message includes at least one of time domain location infor