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BR-122025010560-A2 - DATA TRANSMISSION METHOD AND DEVICE

BR122025010560A2BR 122025010560 A2BR122025010560 A2BR 122025010560A2BR-122025010560-A2

Abstract

This application provides a method of data transmission and an apparatus, and relates to the field of communication technologies. The data transmission method includes: generating, by a first station in a first multi-link device, an eleventh frame, wherein the eleventh frame indicates a maximum number of shared spatial streams supported by the first multi-link device; and sending, by the first station, the eleventh frame. According to the data transmission method provided in this application, the throughput of a station in a multi-link device can be improved.

Inventors

  • Ming Gan
  • Dandan LIANG
  • Yuchen Guo
  • Yunbo Li
  • Jian Yu

Assignees

  • HUAWEI TECHNOLOGIES CO., LTD.

Dates

Publication Date
20260317
Application Date
20210713
Priority Date
20200713

Claims (20)

  1. 1. Data transmission method, characterized in that the method comprises: receiving an eleventh frame from a first station on a first multi-link device, wherein the eleventh frame indicates a maximum number of shared spatial streams supported by the first multi-link device; and determining, based on the eleventh frame, the maximum number of shared spatial streams supported by the first multi-link device.
  2. 2. Method, according to claim 1, CHARACTERIZED in that the eleventh frame indicates a maximum number of shared spatial streams supported by the first multi-link device for each MCS modulation and encoding scheme.
  3. 3. Method, according to claim 2, CHARACTERIZED in that the eleventh frame comprises a fifth field, and the fifth field indicates a maximum number of shared spatial streams for reception supported by the first multi-link device for each MCS.
  4. 4. Method, according to claim 3, CHARACTERIZED in that the fifth field is carried in a Supported NSS and EHT MCS Set field of the eleventh frame.
  5. 5. Method, according to any one of claims 2 to 3, CHARACTERIZED in that the eleventh frame comprises a sixth field, and the sixth field indicates a maximum number of shared spatial streams for transmission supported by the first multi-link device for each MCS.
  6. 6. Method, according to claim 5, CHARACTERIZED in that the sixth field is carried in a Supported NSS and EHT MCS Set field of the eleventh frame.
  7. 7. Method, according to any one of claims 1 to 6, CHARACTERIZED in that the eleventh frame comprises a shared station field, and the shared station field indicates a plurality of stations participating in a shared spatial flow.
  8. 8. Method according to claim 7, characterized in that the shared station field comprises a plurality of link identifier fields.
  9. 9. Method, according to any one of claims 1 to 8, CHARACTERIZED in that the eleventh frame additionally indicates a maximum number of shared spatial streams supported by each station in the first multi-link device.
  10. 10. Method according to claim 9, characterized in that the eleventh frame comprises an eighth field, and the eighth field comprises a field of spatial stream quantity for receiving, a field of spatial stream quantity for transmitting, and a link identifier field.
  11. 11. Method, according to claim 10, CHARACTERIZED in that the field of the number of spatial flows for receiving and the field of the number of spatial flows for transmitting are carried in the Supported NSS and EHT MCS Set field of the eleventh frame.
  12. 12. Method, according to any one of claims 1 to 11, CHARACTERIZED in that the eleventh frame is either a membership request frame or a membership response frame.
  13. 13. A method according to any one of claims 1 to 12, characterized in that the method further comprises: sending a third frame, wherein the third frame indicates to the first station to enable a spatial stream sharing mode, the spatial stream sharing mode is used to enable the first station to use the shared spatial streams, and the shared spatial stream quantity is a maximum quantity of shared spatial streams supported by the first multi-link device; and receiving a fourth frame, wherein the fourth frame is used to respond to the third frame.
  14. 14. Method according to claim 13, CHARACTERIZED in that after sending a third frame, the method further comprises: receiving an acknowledgment frame of the third frame.
  15. 15. Method, according to claim 13 or 14, CHARACTERIZED in that after receiving a fourth frame, the method further comprises: sending an acknowledgment frame of the fourth frame.
  16. 16. A method according to any one of claims 1 to 12, characterized in that the method further comprises: receiving a third frame, wherein the third frame indicates that the first station enables a space stream sharing mode, the space stream sharing mode is used to enable the first station to use the shared space streams, and the shared space stream quantity is a maximum shared space stream quantity supported by the first multi-link device; and sending a fourth frame, wherein the fourth frame is used to respond to the third frame.
  17. 17. Method, according to any one of claims 13 to 16, CHARACTERIZED in that the method further comprises: enabling a plurality of spatial flows through frame interaction, wherein a quantity among the plurality of spatial flows is less than or equal to the quantity of shared spatial flows.
  18. 18. Method according to claim 17, CHARACTERIZED in that the method further comprises: using a spatial flow supported by the first station before frame interaction is completed.
  19. 19. Method, according to claim 17 or 18, CHARACTERIZED in that the method further comprises: using the plurality of spatial flows after frame interaction is completed.
  20. 20. Method according to claim 19, characterized in that the method further comprises: using the spatial flow supported by the first station after a frame interaction sequence terminates.

Description

[0001] This application claims priority over Chinese Patent Application No. 202010671573.2, filed with the National Intellectual Property Administration of China on July 13, 2020, and entitled “DATA TRANSMISSION METHOD AND APPARATUS”, which is incorporated herein by reference in its entirety. TECHNICAL FIELD [0002] This application relates to the field of communication technologies and, in particular, to a method of data transmission and a device. FUNDAMENTALS [0003] According to the current IEEE 802.11 next-generation wireless fidelity (Wi-Fi) protocol, an extremely high throughput (EHT) device supports a plurality of streams, a plurality of frequency bands (such as 2.4 GHz, 5 GHz, and 6 GHz frequency bands), cooperation of a plurality of channels in the same frequency band, and other methods to improve peak throughput and reduce service transmission delay. The plurality of frequency bands or the plurality of channels can be collectively referred to as multiple links. [0004] A device that includes a plurality of stations may be referred to as a multi-link device (MLD). Each station in the multi-link device operates on one link. For a multi-link device, how to further optimize the throughput of a station is a technical problem that needs to be considered. SUMMARY [0005] This application provides a method and a data transmission device for improving the throughput of a station in a multi-link device. [0006] According to a first aspect, a data transmission method is provided. The method includes: A first station on a first multi-link device receives a third frame. The third frame tells the first station to enable a spatial stream sharing mode. The spatial stream sharing mode is used to enable the first station to use the shared spatial streams. The shared spatial stream quantity is a maximum number of shared spatial streams supported by the first multi-link device. The first station sends a fourth frame. The fourth frame is used to respond to the third frame. [0007] With reference to the first aspect, in a possible project, after the first station receives the third frame, the method additionally includes: The first station sends an acknowledgment frame of the third frame. [0008] With reference to the first aspect, in a possible project, after the first station sends the fourth frame, the method additionally includes: The first station receives an acknowledgment frame of the fourth frame. [0009] According to a second aspect, a data transmission method is provided. The method includes: A first station on a first multi-link device sends a third frame. The third frame indicates that the first station enables a spatial stream sharing mode. The spatial stream sharing mode is used to enable the first station to use the shared spatial streams. The shared spatial stream quantity is a maximum number of shared spatial streams supported by the first multi-link device. The first station receives a fourth frame. The fourth frame is used to respond to the third frame. [0010] With reference to the second aspect, in a possible project, the method additionally includes: The first station receives a recognition frame from the third frame. [0011] With reference to the second aspect, in a possible project, the method additionally includes: The first station sends an acknowledgment frame of the fourth frame. [0012] With reference to the first aspect or the second aspect, in a possible project, the method additionally includes: The first station enables a plurality of spatial flows through frame interaction. A quantity among the plurality of spatial flows is less than or equal to the quantity of shared spatial flows. [0013] With reference to the first aspect or the second aspect, in a possible project, the method additionally includes: The first station uses, before the frame interaction is completed, a spatial flow supported by the first station. [0014] With reference to the first aspect or the second aspect, in a possible project, the method additionally includes: The first station uses, after frame interaction is completed, the plurality of spatial flows. [0015] With reference to the first aspect or the second aspect, in a possible project, the method additionally includes: The first station uses, after a frame interaction sequence finishes, the spatial flow supported by the first station. [0016] With reference to the first aspect or the second aspect, in a possible project, the method additionally includes: When any of the predefined conditions are met, the first station determines that the frame interaction sequence ends. [0017] The predefined condition includes at least one of the following: [0018] The first station receives a seventh frame. A receiving address for the seventh frame is different from an address of the first station, or a sending address for the seventh frame is different from a sending address for an eighth frame received by the first station. The eighth frame is used to initiate or establish a transmission