CN-122027077-A - Communication method and device

Abstract

The application provides a communication method and a communication device, relates to the technical field of wireless communication, and is used for reducing signaling overhead in the process of adjusting the transmission rate of transmission equipment. The application supports any one of the IEEE protocols, or the application can also support star flash/SPARK LINK/nearlink standard protocols. The method comprises the steps that a first communication device sends a first frame to a second communication device on a first frequency domain resource, the first communication device receives a second frame from the second communication device, the second frame comprises first information, the first information is used for indicating channel quality of part or all of the frequency domain resources in the first frequency domain resource, and the first communication device adjusts the sending rate of the first communication device according to the first information. The application does not need to add extra measurement flow, thereby reducing unnecessary occupation of air interface and reducing signaling overhead.

Inventors

• WANG WEIJIE
• WANG XIANG
• LI YANCHUN

Assignees

• 华为技术有限公司

Dates

Publication Date

20260512

Application Date

20241112

Claims (20)

1. 1. A communication method applied to a first communication device, the method comprising: Transmitting a first frame to a second communication device on a first frequency domain resource, the first frame not being a null data frame NDP; Receiving a second frame from the second communication device, the second frame including first information indicating channel quality of some or all of the first frequency domain resources; And adjusting the sending rate of the first communication equipment according to the first information.
2. 2. The method of claim 1, wherein the channel quality of all of the first frequency domain resources comprises at least one of: channel quality corresponding to the whole first frequency domain resource; And channel quality corresponding to all the first resource units in the first frequency domain resource.
3. 3. The method of claim 1, wherein the channel quality of the partial frequency domain resource in the first frequency domain resource comprises: and the channel quality corresponding to part of the first resource units in the first frequency domain resource.
4. 4. A method according to any one of claims 1 to 3, wherein the second frame is an acknowledgement frame corresponding to the first frame.
5. 5. The method of any of claims 1-4, wherein the second frame further comprises first modulation and coding strategy, MCS, information, the first MCS information being a recommended MCS for the second communication device.
6. 6. The method of claim 5, wherein said adjusting the transmission rate of the first communication device based on the first information comprises: and adjusting the sending rate of the first communication equipment according to the first information and the first MCS information.
7. 7. The method of claim 5 or 6, wherein the recommended MCS for the second communication device comprises at least one of: the second communication device recommends an MCS on the first frequency domain resource; the second communication device recommends an MCS on a first resource unit in the first frequency domain resource.
8. 8. The method according to any one of claims 1 to 7, wherein the first frame includes first indication information, the first indication information being used to indicate whether the second communication device feeds back the first information.
9. 9. The method according to any one of claims 1-8, wherein the first frame includes second indication information, the second indication information being used to indicate a feedback granularity at which the second communication device feeds back the first information.
10. 10. The method according to any one of claims 2-9, wherein the first information is used to indicate a channel quality corresponding to the entire first frequency domain resource, and the method further comprises: receiving a third frame from the second communication device, where the third frame includes second information, where the second information is used to indicate channel quality corresponding to all or part of the first resource units in the first frequency domain resource; And adjusting the sending rate of the first communication equipment according to the second information.
11. 11. The method of claim 10, wherein the third frame further comprises the second MCS information recommended by the second communication device for an MCS on the first resource unit in the first frequency domain resource.
12. 12. The method of claim 11, wherein the adjusting the transmission rate of the first communication device based on the second information comprises: And adjusting the sending rate of the first communication equipment according to the second information and the second MCS information.
13. 13. A communication method applied to a second communication device, the method comprising: receiving a first frame from a first communication device on a first frequency domain resource, the first frame not being a null data frame NDP; and transmitting a second frame to the first communication device, wherein the second frame comprises first information, the first information is used for indicating the channel quality of part or all of the first frequency domain resources, and the first information is used for adjusting the transmission rate of the first communication device.
14. 14. The method of claim 13, wherein the channel quality of all of the first frequency domain resources comprises at least one of: channel quality corresponding to the whole first frequency domain resource; And channel quality corresponding to all the first resource units in the first frequency domain resource.
15. 15. The method of claim 13, wherein the channel quality of the partial frequency domain resource in the first frequency domain resource comprises: and the channel quality corresponding to part of the first resource units in the first frequency domain resource.
16. 16. The method according to any one of claims 13 to 15, wherein the second frame is an acknowledgement frame corresponding to the first frame.
17. 17. The method of any of claims 13-16, wherein the second frame further comprises first modulation and coding strategy, MCS, information, the first MCS information being a recommended MCS for the second communication device.
18. 18. The method of claim 17, wherein the second communication device recommended MCS comprises at least one of: the second communication device recommends an MCS on the first frequency domain resource; the second communication device recommends an MCS on a first resource unit in the first frequency domain resource.
19. 19. The method according to any one of claims 13 to 18, wherein the first frame includes first indication information, the first indication information being used to indicate whether the second communication device feeds back the first information.
20. 20. The method according to any one of claims 13 to 19, wherein the first frame includes second indication information, the second indication information being used to indicate a feedback granularity at which the second communication device feeds back the first information.

Description

Communication method and device Technical Field The present application relates to the field of wireless communications technologies, and in particular, to a communication method and apparatus. Background When the wireless fidelity (WIRELESS FIDELITY, wi-Fi) technology is based on communication, the sending device needs to consider the influence factors such as channel conditions, interference degrees and the like to select the optimal rate for transmission in order to achieve the aims of maximizing transmission throughput or achieving high stability and the like. In the actual communication process, the channel condition is changed along with the factors such as the movement of the communication equipment, the environmental change and the like, and then the optimal rate also needs to be adjusted in real time, so that how to enable the sending equipment to obtain the optimal sending rate in the changing process becomes a key problem in the Wi-Fi communication process. Currently, a transmitting device may determine a transmission rate of a message based on a measurement (sounding) procedure. For example, the transmitting device transmits probe data to the receiving device, and the receiving device measures the received probe data and feeds back channel information (e.g., signal-to-interference-plus-noise ratio (signal to interference plus noise ratio, SINR)) to the transmitting device. The method for determining the sending rate of the message based on the measurement flow occupies more air interface time, and causes larger signaling overhead. Disclosure of Invention The application provides a communication method and a communication device, which are used for reducing signaling overhead in the process of adjusting the transmission rate of transmission equipment. In a first aspect, embodiments of the present application provide a communication method, where the method may be applied to a first communication device, a module (e.g., a circuit, a chip, or a chip system, etc.) in the first communication device, or a logic node, a logic module, or software that can implement all or part of the functions of the first communication device. Taking a first communication device as an example, the method includes the steps that the first communication device sends a first frame to a second communication device on a first frequency domain resource, the first frame is not an NDP frame, the first communication device receives a second frame from the second communication device, the second frame comprises first information, the first information is used for indicating channel quality of part or all of the first frequency domain resource, and the first communication device adjusts the sending rate of the first communication device according to the first information. Alternatively, the sending rate of the first communication device adjusted by the first communication device according to the first information may be that the sending rate of the first communication device on the first frequency domain resource to the second communication device is adjusted according to the first information. After the first communication device sends the first frame to the second communication device on the first frequency domain resource, the second communication device can determine the first information for indicating the channel quality of the first frequency domain resource based on the first frame and feed back the second frame to the first communication device through the second frame, and the first communication device can adjust the sending rate of the first communication device to the second communication device on the first frequency domain resource based on the first information. In a possible implementation method, the channel quality of all the frequency domain resources in the first frequency domain resources comprises at least one of channel quality corresponding to the whole first frequency domain resources and channel quality corresponding to all the first resource units in the first frequency domain resources. By the method, the feedback granularity of the first information fed back by the second communication device to the first communication device can be the granularity of the first frequency domain resource (or referred to as full frequency band granularity), the first information is used for indicating the channel quality corresponding to the whole first frequency domain resource, or the feedback granularity of the first information fed back by the second communication device to the first communication device can be the granularity of the first resource unit, and the first information is used for indicating the channel quality corresponding to all the first resource units in the first frequency domain resource. The first communication device can flexibly feed back the first information based on different feedback granularities. In one possible implementation, the second frame is an acknowledgement frame corresponding to