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US-12628044-B2 - Communication method and communication device under multiple links

US12628044B2US 12628044 B2US12628044 B2US 12628044B2US-12628044-B2

Abstract

The present disclosure provides a communication method and a communication device under multiple links. The communication method may comprise: determining a first message frame, said first message frame comprising a plurality of subframes, each subframe comprising a sender address and a recipient address; said determining a first message frame comprises: according to the capability information of the device sending said first message frame and the device receiving said first message frame, respectively, determining the sender address and recipient address of the subframe under different links accordingly.

Inventors

  • Xiandong Dong

Assignees

  • BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.

Dates

Publication Date
20260512
Application Date
20200918

Claims (13)

  1. 1 . A communication method under multiple links, comprising: determining a first message frame, wherein the first message frame comprises a plurality of subframes, and each subframe comprises a sender address and a recipient address, determining the first message frame comprises: based on capability information of a device sending the first message frame and capability information of a device receiving the first message frame, respectively, determining the sender address and the recipient address of a subframe under different links accordingly, wherein the capability information of the device sending the first message frame indicates whether the device is capable of supporting simultaneous sending and/or receiving under multiple links, and the capability information of the device receiving the first message frame indicates whether the device is capable of supporting simultaneous sending and/or receiving under multiple links, and in response that the device sending the first message frame supports simultaneous sending and/or receiving under multiple links, setting the sender address of the subframe to be different under different links.
  2. 2 . The communication method according to claim 1 , further comprising: setting a capability bit in an extremely high throughput capability element to indicate that a multi-link device supports transmission of the plurality of subframes of the first message frame under multiple links.
  3. 3 . The communication method according to claim 1 , further comprising: in response that the device sending the first message frame does not support simultaneous sending and/or receiving under multiple links, setting the sender address of the subframe to be identical under different links.
  4. 4 . The communication method according to claim 1 , further comprising: in response that the device sending the first message frame does not support simultaneous sending and/or receiving under multiple links, setting the sender address of the subframe to be different under different links.
  5. 5 . The communication method according to claim 1 , further comprising: in response that the device receiving the first message frame supports simultaneous sending and/or receiving under multiple links, setting the recipient address of the subframe to be different under different links.
  6. 6 . The communication method according to claim 1 , further comprising: in response that the device receiving the first message frame does not support simultaneous sending and/or receiving under multiple links, setting the recipient address of the subframe to be identical under different links.
  7. 7 . The communication method according to claim 1 , further comprising: in response that the device receiving the first message frame does not support simultaneous sending and/or receiving under multiple links, setting the recipient address of the subframe to be different under different links.
  8. 8 . The communication method according to claim 1 , further comprising: in response that neither the device sending the first message frame nor the device receiving the first message frame supports simultaneous sending and/or receiving under multiple links, setting the sender address of the subframe to be identical and the recipient address of the subframe to be identical under each link.
  9. 9 . The communication method according to claim 1 , wherein the subframe further comprises a link identifier for identifying a link for sending the first message frame.
  10. 10 . The communication method according to claim 9 , wherein the link identifier is set in a padding subfield of the subframe.
  11. 11 . The communication method according to claim 9 , wherein the link identifier is set in an MAC header portion of the subframe.
  12. 12 . An electronic device, comprising a memory, a processor and a computer program stored on the memory and runnable on the processor, wherein the processor, when executing the computer program, is configured to: determine a first message frame, wherein the first message frame comprises a plurality of subframes, and each subframe comprises a sender address and a recipient address, based on capability information of a device sending the first message frame and capability information of a device receiving the first message frame, respectively, determine the sender address and the recipient address of a subframe under different links accordingly, wherein the capability information of the device sending the first message frame indicates whether the device is capable of supporting simultaneous sending and/or receiving under multiple links, and the capability information of the device receiving the first message frame indicates whether the device is capable of supporting simultaneous sending and/or receiving under multiple links, and in response that the device sending the first message frame supports simultaneous sending and/or receiving under multiple links, set the sender address of the subframe to be different under different links.
  13. 13 . A non-transitory computer readable storage medium, having a computer program stored thereon, wherein the computer program, when executed by the processor, causes the processor to: determine a first message frame, wherein the first message frame comprises a plurality of subframes, and each subframe comprises a sender address and a recipient address, based on capability information of a device sending the first message frame and capability information of a device receiving the first message frame, respectively, determine the sender address and the recipient address of a subframe under different links accordingly, wherein the capability information of the device sending the first message frame indicates whether the device is capable of supporting simultaneous sending and/or receiving under multiple links, and the capability information of the device receiving the first message frame indicates whether the device is capable of supporting simultaneous sending and/or receiving under multiple links, and in response that the device sending the first message frame supports simultaneous sending and/or receiving under multiple links, set the sender address of the subframe to be different under different links.

Description

CROSS REFERENCE The present application is a U.S. National Stage of International Application No. PCT/CN2020/116221, filed on Sep. 18, 2020, the contents of all of which are incorporated herein by reference in their entireties for all purposes. TECHNICAL FIELD The present disclosure relates to the field of communications, more specifically, to a communication method and a communication device under multiple links. BACKGROUND In May 2018, the IEEE (Institute of Electrical and Electronic Engineers) established the SG (study group) IEEE802.11be to study the next generation (IEEE802.11a/b/g/n/ac) Wi-Fi technology. The scope of research is 320 MHz bandwidth transmission, aggregation and cooperation of multiple frequency bands, etc. It is expected to be able to improve at least four times of the rate and throughput compared with the existing IEEE802.11ax standard. Its main application scenarios are video transmission, AR (Augmented Reality), VR (Virtual Reality), etc. The aggregation and cooperation of multiple frequency bands mean that devices communicate with each other in 2.4 GHz, 5.8 GHz and 6-7 GHz bands simultaneously. New MAC (Media Access Control) mechanisms need to be defined to manage the communication between devices under multiple bands at the same time. In addition, low latency transmission is expected to be supported in IEEE802.11be. In discussions of the IEEE802.11be standard, the supported maximum bandwidth is 320 MHz (160 MHz+160 MHz), with the possibility of supporting 240 MHz (160 MHz+80 MHz) and the bandwidth supported in the IEEE802.11ax standard. In existing standards, the A-MSDU (Aggregated MAC Service Data Unit) is used to transmit data in the case of poor channel conditions or low data rates. A plurality of subframes can be included in the A-MSDU and it can be defined in existing standards that the DA and SA parameter values of each subframe are mapped to the same recipient address (RA) value and sender address (TA) value respectively. In the IEEE802.11be standard, a Station (STA) and an Access Point (AP) may be a multi-link device (MLD), which may support the ability of sending and/or receiving simultaneously at the same moment under multiple links. That is, in the IEEE802.11be standard, multiple links can exist between the STA and the AP. As a result, subframes of the A-MSDU may be transmitted or retransmitted under multiple links, and the AP MLD and non-AP STA MLD may have different local MAC addresses under multiple links. SUMMARY Various embodiments of the present disclosure provide the following technical solutions. An example embodiment of the present disclosure provides a communication method under multiple links. The communication method may include: determining a first message frame, wherein the first message frame includes a plurality of subframes, each subframe includes a sender address and a recipient address, wherein said determining a first message frame includes: based on capability information of a device sending the first message frame and a device receiving the first message frame, respectively, determining the sender address and recipient address of the subframe under different links accordingly. According to an example embodiment of the present disclosure, the communication method further includes: setting a capability bit in an extremely high throughput capability element to indicate that a multi-link device supports transmission of the plurality of subframes of the first message frame under multiple links. According to an example embodiment of the present disclosure, the communication method further includes: in response that the device sending the first message frame supports simultaneous sending and/or receiving under multiple links, setting the sender address of the subframe to be different under different links. According to an example embodiment of the present disclosure, the communication method further includes: in response that the device sending the first message frame does not support simultaneous sending and/or receiving under multiple links, setting the sender address of the subframe to be identical under different links. According to an example embodiment of the present disclosure, the communication method further includes: in response that the device sending the first message frame does not support simultaneous sending and/or receiving under multiple links, setting the sender address of the subframe to be different under different links. According to an example embodiment of the present disclosure, the communication method further includes: in response that the device receiving the first message frame supports simultaneous sending and/or receiving under multiple links, setting the recipient address of the subframe to be different under different links. According to an example embodiment of the present disclosure, the communication method further includes: in response that the device receiving the first message frame does not support simultaneous sendin