CN-121986460-A - Method and apparatus in a node for wireless communication

Abstract

A method and apparatus in a node for wireless communication are provided, the method comprising determining a plurality of time-frequency resource units occupied by a first downlink signal by a first model, transmitting a first signaling, receiving the first downlink signal, 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, 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: determining a plurality of time-frequency resource units occupied by a first downlink signal through a first model; Transmitting a first signaling; Receiving the first downlink signal; 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 of claim 1, wherein the receiving the first downlink signal comprises: Receiving the first downlink signal on the plurality of time-frequency resource units when the second node determines not to update the plurality of time-frequency resource units, or And when the second node determines to update the plurality of time-frequency resource units, the first downlink signal is received on the updated plurality of time-frequency resource units.
3. 3. The method of claim 2, wherein when the second node determines to update the plurality of time-frequency resource units, the method further comprises, prior to receiving the first downlink signal: Receiving a second signaling; wherein the second signaling is used for indicating the updated plurality of time-frequency resource units.
4. 4. A method according to any of claims 1-3, characterized in that the first downlink signal is used for channel estimation of a first downlink channel, and that the input information of the first model comprises channel information related to the first downlink channel and/or configuration information of the first model.
5. 5. The method of claim 4, wherein the configuration information of the first model includes one or more of: Physical resources corresponding to the first downlink channel; A signal density for defining the plurality of time-frequency resource units; port numbers for defining the plurality of time-frequency resource units; Orthogonal indications defining the plurality of time-frequency resource units.
6. 6. The method of claim 4 or 5, 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.
7. 7. The method according to any one of claims 4-6, further comprising: Performing channel estimation on the first downlink channel through a second model; wherein the input information of the second model includes one or more of: Downlink data in the first downlink channel; The format of the first downlink signal; The signal density corresponding to a plurality of time-frequency resource units actually occupied by the first downlink signal; orthogonal indications corresponding to a plurality of time-frequency resource units actually occupied by the first downlink signal; port numbers corresponding to the plurality of time-frequency resource units actually occupied by the first downlink signal; and the time-frequency positions of a plurality of time-frequency resource units actually occupied by the first downlink signal.
8. 8. The method according to any one of claims 1-7, 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 the first model, identification information of a second model, the capability of the first model, the capability of the second model, the computing capability of the first node and the computing resource allowance of the first node.
9. 9. The method of claim 8, 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 a second node.
10. 10. The method according to any one of claims 1-9, further comprising: receiving fifth signaling; The fifth signaling is used for indicating to activate the first model and/or the second model, the fifth signaling is sent when a first condition is met, and the first condition comprises that the first node supports to determine the plurality of time-frequency resource units through the first model, and/or a second node supports the first node to determine the plurality of time-frequency resource units through the first model.
11. 11. The method according to any one of claims 1-9, further comprising: receiving fifth signaling; The fifth signaling is used for indicating whether the first model and/or the second model are activated, and when the fifth signaling indicates that the first model and/or the second model are activated, the fifth signaling further comprises identification information of the first model and/or the second model.
12. 12. The method according to claim 10 or 11, 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 first model and/or the second model are not activated, determining a plurality of time-frequency resource units actually 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.
13. 13. The method according to any of claims 1-12, wherein prior to said determining the plurality of time-frequency resource units occupied by the first downlink signaling by the first model, the method further comprises: receiving a sixth signaling, where the sixth signaling is used to instruct the first node to calculate the plurality of time-frequency resource units; the sixth signaling is further used for indicating one or more of transmission resources of the first downlink channel, signal occupation conditions on the transmission resources of the first downlink channel, configuration information of the first model and configuration information of the second model.
14. 14. The method according to any of claims 1-13, 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.
15. 15. The method according to any one of claims 1-14, 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 actually occupied by the first downlink signal.
16. 16. A method in a second node for wireless communication, comprising: receiving a first signaling, wherein the first signaling is used for indicating at least one of a plurality of time-frequency resource units occupied by a first downlink signal, a first parameter of the first model and a validity period of a plurality of time-frequency resource units occupied by the first downlink signal, which are determined by a first node through a first model; Determining whether to update the plurality of time-frequency resource units; transmitting the first downlink signal; wherein the first parameter comprises an identification of the first model and/or a model parameter of the first model.
17. 17. The method of claim 16, wherein the transmitting the first downlink signal comprises: transmitting the first downlink signal on the plurality of time-frequency resource units when the second node determines not to update the plurality of time-frequency resource units, or And when the second node determines to update the plurality of time-frequency resource units, the first downlink signal is sent on the updated plurality of time-frequency resource units.
18. 18. The method of claim 17, wherein when the second node determines to update the plurality of time-frequency resource units, the method further comprises, prior to transmitting the first downlink signal: Sending a second signaling; wherein the second signaling is used for indicating the updated plurality of time-frequency resource units.
19. 19. The method according to any of claims 16-18, 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.
20. 20. The method of claim 19, wherein the configuration information of the first model includes one or more of: Physical resources corresponding to the first downlink channel; A signal density for defining the plurality of time-frequency resource units; port numbers for defining the plurality of time-frequency resource units; Orthogonal indications defining the plurality of time-frequency resource units.

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 comprises determining a plurality of time-frequency resource units occupied by a first downlink signal through a first model, sending a first signaling, and receiving the first downlink signal, 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 a model parameter of the first model. In a second aspect, a method in a second node for wireless communication is provided, comprising receiving a first signaling for indicating at least one of a plurality of time-frequency resource units occupied by a first downlink signal, a first parameter of a first model, and a validity period of a plurality of time-frequency resource units occupied by the first downlink signal, which are determined by the first node through the first model, determining whether to update the plurality of time-frequency resource units, and transmitting the first downlink signal, wherein the first parameter comprises an identification of the first model and/or a model parameter of the first model. In a third aspect, a first node for wireless communication is provided, which comprises a first processing unit, a first transceiver unit and a second transceiver unit, wherein the first processing unit is used for determining a plurality of time-frequency resource units occupied by a first downlink signal through a first model, the first transceiver unit is used for transmitting first signaling, the second transceiver unit is used for receiving the first downlink signal, 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 comprises an identification of the first model and/or model parameters of the first model. In a fourth aspect, a second node for wireless communication is provided, which includes a third transceiver unit configured to receive a first signaling, where the first signaling is configured to instruct the first node to determine at least one of a plurality of time-frequency resource units occupied by a first downlink signal, a first parameter of the first model, and a validity period of a plurality of time-frequency resource units occupied by the first downlink signal, and a second processing unit configured to determine whether to update the plurality of time-frequency resource units, and a fourth transceiver unit configured to send the first downlink signal, where 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 further include other devices that interact with the first node or the second node in the solution provided by the embodiments of the present application. In an eighth aspect, embodiments of the present application provide a compu