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CN-121986526-A - Method and apparatus in a node for wireless communication

CN121986526ACN 121986526 ACN121986526 ACN 121986526ACN-121986526-A

Abstract

A method and apparatus in a node for wireless communication are provided, the method comprising receiving a first signaling, determining a plurality of time-frequency resource units occupied by a first downlink signal according to the first signaling, receiving the first downlink signal on the plurality of time-frequency resource units, wherein the plurality of time-frequency resource units are determined by a second node through a first model, the first signaling is used for indicating at least one of the plurality of time-frequency resource units, a first parameter of the first model and a validity period of the plurality of time-frequency resource units, and the first parameter comprises an identification of the first model and/or a model parameter of the first model.

Inventors

  • LIU JIN
  • Huang Cunhui

Assignees

  • 上海移远通信技术股份有限公司

Dates

Publication Date
20260505
Application Date
20251231

Claims (20)

  1. 1. A method in a first node for wireless communication, comprising: Receiving a first signaling; Determining a plurality of time-frequency resource units occupied by a first downlink signal according to the first signaling; receiving the first downlink signal on the plurality of time-frequency resource units; The plurality of time-frequency resource units are determined by a second node through a first model, and the first signaling is used for indicating at least one of the plurality of time-frequency resource units, a first parameter of the first model and the validity period of the plurality of time-frequency resource units, wherein the first parameter comprises an identification of the first model and/or a model parameter of the first model.
  2. 2. The method according to claim 1, wherein the first downlink signal is used for channel estimation of a first downlink channel, and wherein the input information of the first model comprises channel information related to the first downlink channel and/or configuration information of the first model.
  3. 3. The method of claim 2, wherein the configuration information of the first model includes one or more of: Physical resources corresponding to the first downlink channel; For defining signal densities corresponding to the plurality of time-frequency resource units; The port numbers are used for limiting the port numbers corresponding to the time-frequency resource units; Orthogonal indications defining the plurality of time-frequency resource units.
  4. 4. The method of claim 2 or 3, wherein the first downlink channel includes downlink data, wherein the downlink data occupies a time-frequency position different from a time-frequency position of the plurality of time-frequency resource units, or wherein at least one time-frequency position occupied by the downlink data is the same as a time-frequency position of at least one time-frequency resource unit of the plurality of time-frequency resource units.
  5. 5. The method of any of claims 2-4, wherein the first signaling is further to indicate one or more of: transmission resources of the first downlink channel; Port numbers corresponding to the plurality of time-frequency resource units; Orthogonal indications corresponding to the plurality of time-frequency resource units; configuration information of the second model.
  6. 6. The method according to any of claims 2-5, wherein the first downlink channel is channel estimated by a second model, the input information of the second model comprising one or more of the following: Downlink data in the first downlink channel; The format of the first downlink signal; Signal densities corresponding to the plurality of time-frequency resource units; Orthogonal indications corresponding to the plurality of time-frequency resource units; Port numbers corresponding to the plurality of time-frequency resource units; And the time-frequency positions of the plurality of time-frequency resource units.
  7. 7. The method according to any one of claims 1-6, further comprising: Transmitting a third signaling; The third signaling is used for indicating the capability information of the first node, and the capability information comprises one or more of identification information of a second model, the capability of the second model, the computing capability of the first node and the computing resource allowance of the first node.
  8. 8. The method of claim 7, wherein the transmission of the third signaling is triggered by the first node itself or the transmission of the third signaling is triggered by a fourth signaling transmitted by the second node.
  9. 9. The method according to any one of claims 1-8, further comprising: receiving fifth signaling; the fifth signaling is used for indicating to activate a second model, the fifth signaling is sent when a first condition is met, the first condition comprises that the first node supports the plurality of time-frequency resource units determined by the first model, and/or the second node considers that the first node supports the plurality of time-frequency resource units determined by the first model.
  10. 10. The method according to any one of claims 1-8, further comprising: receiving fifth signaling; the fifth signaling is used for indicating whether the second model is activated or not, and when the fifth signaling indicates that the second model is activated, the fifth signaling further comprises identification information of the second model.
  11. 11. The method according to claim 9 or 10, characterized in that the method further comprises: Monitoring the fifth signaling for a first period of time; When the fifth signaling is not successfully received or the fifth signaling indicates that the second model is not activated, determining a plurality of time-frequency resource units occupied by the first downlink signal according to predefined or preconfigured information; wherein the first time period is related to the transmission time of the third signaling, or the first time period is a predefined parameter.
  12. 12. The method according to any of claims 1-11, wherein the first downlink signal is used for channel estimation of a first downlink channel, and wherein the validity period of the plurality of time-frequency resource units is determined based on a coherence time associated with the first downlink channel.
  13. 13. The method according to any one of claims 1-12, wherein after said receiving the first downlink signal, the method further comprises: transmitting a first uplink signal; The first uplink signal is a first uplink signal after the first node receives the first downlink signal, and the plurality of time-frequency resource units occupied by the first uplink signal are determined according to the plurality of time-frequency resource units occupied by the first downlink signal.
  14. 14. A method in a second node for wireless communication, comprising: determining a plurality of time-frequency resource units occupied by a first downlink signal through a first model; Transmitting a first signaling; Transmitting the first downlink signal on the plurality of time-frequency resource units; The first signaling is used for indicating at least one of the plurality of time-frequency resource units, a first parameter of the first model and the validity period of the plurality of time-frequency resource units, and the first parameter comprises an identification of the first model and/or a model parameter of the first model.
  15. 15. The method according to claim 14, wherein the first downlink signal is used for channel estimation of a first downlink channel, and wherein the input information of the first model comprises channel information related to the first downlink channel and/or configuration information of the first model.
  16. 16. The method of claim 15, wherein the configuration information of the first model includes one or more of: Physical resources corresponding to the first downlink channel; For defining signal densities corresponding to the plurality of time-frequency resource units; The port numbers are used for limiting the port numbers corresponding to the time-frequency resource units; Orthogonal indications defining the plurality of time-frequency resource units.
  17. 17. The method of claim 15 or 16, wherein the first downlink channel includes downlink data, wherein the downlink data occupies a time-frequency position different from a time-frequency position of the plurality of time-frequency resource units, or wherein at least one time-frequency position occupied by the downlink data is the same as a time-frequency position of at least one time-frequency resource unit of the plurality of time-frequency resource units.
  18. 18. The method of any of claims 15-17, wherein the first signaling is further to indicate one or more of: transmission resources of the first downlink channel; Port numbers corresponding to the plurality of time-frequency resource units; Orthogonal indications corresponding to the plurality of time-frequency resource units; configuration information of the second model.
  19. 19. The method according to any of claims 15-18, wherein the first downlink channel is channel estimated by a second model, the input information of the second model comprising one or more of the following: Downlink data in the first downlink channel; The format of the first downlink signal; Signal densities corresponding to the plurality of time-frequency resource units; Orthogonal indications corresponding to the plurality of time-frequency resource units; Port numbers corresponding to the plurality of time-frequency resource units; And the time-frequency positions of the plurality of time-frequency resource units.
  20. 20. The method according to any one of claims 14-19, further comprising: Receiving a third signaling; The third signaling is used for indicating the capability information of the first node, and the capability information comprises one or more of identification information of a second model, the capability of the second model, the computing capability of the first node and the computing resource allowance of the first node.

Description

Method and apparatus in a node for wireless communication Technical Field The present application relates to the field of communication technology, and more particularly, to a method and apparatus in a node for wireless communication. Background In a wireless communication system, a downlink pilot signal or reference signal is transmitted based on pre-configured downlink resources to facilitate signal extraction and channel estimation by a receiving node. But the preconfigured downlink resources occupy more air interface resources, and the fixed pattern is not suitable for more and more complex air interface environments and the increased antenna port number. Therefore, how to determine the transmission resources of the downlink pilot signal or the reference signal is a technical problem to be considered. Disclosure of Invention The embodiment of the application provides a method and a device for a node of wireless communication. Various aspects of the application are described below. In a first aspect, a method in a first node for wireless communication is provided, which includes receiving a first signaling, determining a plurality of time-frequency resource units occupied by a first downlink signal according to the first signaling, receiving the first downlink signal on the plurality of time-frequency resource units, wherein the plurality of time-frequency resource units are determined by a second node through a first model, and the first signaling is used for indicating at least one of the plurality of time-frequency resource units, a first parameter of the first model and a validity period of the plurality of time-frequency resource units, and the first parameter includes an identification of the first model and/or a model parameter of the first model. In a second aspect, a method in a second node for wireless communication is provided, which comprises determining a plurality of time-frequency resource units occupied by a first downlink signal through a first model, sending first signaling, sending the first downlink signal on the plurality of time-frequency resource units, wherein the first signaling is used for indicating at least one of the plurality of time-frequency resource units, a first parameter of the first model and a validity period of the plurality of time-frequency resource units, and the first parameter comprises an identification of the first model and/or model parameters of the first model. In a third aspect, a first node for wireless communication is provided, which includes a first transceiver unit configured to receive a first signaling, a first processing unit configured to determine a plurality of time-frequency resource units occupied by a first downlink signal according to the first signaling, where the first transceiver unit is further configured to receive the first downlink signal on the plurality of time-frequency resource units, and the plurality of time-frequency resource units are determined by a second node through a first model, and the first signaling is configured to indicate at least one of the plurality of time-frequency resource units, a first parameter of the first model, and a validity period of the plurality of time-frequency resource units, where the first parameter includes an identifier of the first model and/or a model parameter of the first model. In a fourth aspect, a second node for wireless communication is provided, which includes a second processing unit configured to determine, through a first model, a plurality of time-frequency resource units occupied by a first downlink signal, a fourth transceiver unit configured to send a first signaling, where the fourth transceiver unit is further configured to send the first downlink signal on the plurality of time-frequency resource units, and the first signaling is configured to indicate at least one of the plurality of time-frequency resource units, a first parameter of the first model, and a validity period of the plurality of time-frequency resource units, and the first parameter includes an identifier of the first model and/or a model parameter of the first model. In a fifth aspect, there is provided a first node for wireless communication, comprising a transceiver, a memory for storing a program, and a processor for invoking the program in the memory and controlling the transceiver to receive or transmit signals to cause the first node to perform the method according to the first aspect. In a sixth aspect, there is provided a second node for wireless communication, comprising a transceiver, a memory for storing a program, and a processor for invoking the program in the memory and controlling the transceiver to receive or transmit signals to cause the second node to perform the method as described in the second aspect. In a seventh aspect, an embodiment of the present application provides a communication system, including the first node and/or the second node. In another possible design, the system may f