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US-20260129584-A1 - SYSTEMS, APPARATUSES, METHODS, AND NON-TRANSITORY COMPUTER-READABLE STORAGE DEVICES FOR WIRELESS COMMUNICATION EMPLOYING COORDINATED SPATIAL REUSE AND DYNAMIC SUB-BAND OPERATIONS FOR MULTI-ACCESS-POINTS

US20260129584A1US 20260129584 A1US20260129584 A1US 20260129584A1US-20260129584-A1

Abstract

A communication method has the step of: communicating with an access point (AP) to determine a coordinated spatial reuse (CSR) arrangement therewith, the CSR arrangement comprising information of a first channel, a second channel, a service period (SP) or transmission opportunity (TXOP), and one or more CSR-related parameters; broadcasting to a plurality of stations (STAs) a first frame comprising the CSR arrangement; during the SP or TXOP, communicating with a first subset of the plurality of STAs over the first channel using the one or more CSR-related parameters; and during the SP or TXOP, communicating with a second subset of the plurality of STAs over the second channel.

Inventors

  • Mahmoud Hasabelnaby
  • Osama Aboul-Magd
  • Jung Hoon SUH
  • Sara NOROUZI
  • Yan Xin

Assignees

  • HUWEI TECHNOLOGIES CO., LTD.

Dates

Publication Date
20260507
Application Date
20241105

Claims (20)

  1. 1 . A communication method comprising: communicating with an access point (AP) to determine a coordinated spatial reuse (CSR) arrangement therewith, the CSR arrangement comprising information of a first channel, a second channel, a service period (SP) or transmission opportunity (TXOP), and one or more CSR-related parameters; broadcasting to a plurality of stations (STAs) a first frame comprising the CSR arrangement; during the SP or TXOP, communicating with a first subset of the plurality of STAs over the first channel using the one or more CSR-related parameters; and during the SP or TXOP, communicating with a second subset of the plurality of STAs over the second channel.
  2. 2 . The communication method of claim 1 , wherein the first channel is in a primary band and the second channel is a dynamic sub-band operation (DSO) channel in a secondary band.
  3. 3 . The communication method of claim 1 , wherein the first frame comprises a single target wake time (TWT) element or two aligned broadcast TWT elements.
  4. 4 . The communication method of claim 3 , wherein the first frame comprises two aligned trigger-based broadcast TWT elements; and wherein each of the two aligned trigger-based broadcast TWT elements comprises a Broadcast TWT Parameter Set field; wherein the Broadcast TWT Parameter Set field comprises a Request Type field; wherein the Request Type field comprises a Trigger field having a value of one; and wherein the Request Type field further comprises a Broadcast TWT Recommendation field having a value of five for indicating using the first channel or a value of six for indicating using the second channel.
  5. 5 . The communication method of claim 1 , wherein the first frame comprises a single TWT element; wherein the communication method further comprises: sending to the plurality of STAs a second frame; and wherein the second frame comprises information of the first subset of the plurality of STAs, and information of the second subset of the plurality of STAs.
  6. 6 . The communication method of claim 1 further comprising: receiving a third frame; wherein the third frame is configured for triggering said broadcasting to the plurality of STAs the first frame comprising the CSR arrangement; wherein the CSR arrangement comprises the information of the TXOP; and wherein the first frame is configured to trigger the first subset of the plurality of STAs to communicate over the first channel using the one or more CSR-related parameters, and to trigger the second subset of the plurality of STAs to communicate over the second channel.
  7. 7 . One or more processors functionally coupled to one or more non-transitory computer-readable storage media, wherein the one or more non-transitory computer-readable storage media comprise computer-executable instructions; and wherein the instructions, when executed, cause the one or more processors to perform the method of claim 1 .
  8. 8 . The one or more processors of claim 7 , wherein the first frame comprises two aligned trigger-based broadcast TWT elements; and wherein each of the two aligned trigger-based broadcast TWT elements comprises a Broadcast TWT Parameter Set field; wherein the Broadcast TWT Parameter Set field comprises a Request Type field; wherein the Request Type field comprises a Trigger field having a value of one; and wherein the Request Type field further comprises a Broadcast TWT Recommendation field having a value of five for indicating using the first channel or a value of six for indicating using the second channel.
  9. 9 . The one or more processors of claim 7 , wherein the first frame comprises a single TWT element; wherein the instructions, when executed, cause the one or more processors to perform further actions comprising: sending to the plurality of STAs a second frame; and wherein the second frame comprises information of the first subset of the plurality of STAs, and information of the second subset of the plurality of STAs.
  10. 10 . The one or more processors of claim 7 , wherein the instructions, when executed, cause the one or more processors to perform further actions comprising: receiving a third frame; wherein the third frame is configured for triggering said broadcasting to the plurality of STAs the first frame comprising the CSR arrangement; wherein the CSR arrangement comprises the information of the TXOP; and wherein the first frame is configured to trigger the first subset of the plurality of STAs to communicate over the first channel using the one or more CSR-related parameters, and to trigger the second subset of the plurality of STAs to communicate over the second channel.
  11. 11 . One or more non-transitory computer-readable storage media comprising computer-executable instructions, wherein the instructions, when executed, cause one or more processors to perform the method of claim 1 .
  12. 12 . The one or more non-transitory computer-readable storage media of claim 11 , wherein the first channel is in a primary band and the second channel is a dynamic sub-band operation (DSO) channel in a secondary band.
  13. 13 . The one or more non-transitory computer-readable storage media of claim 11 , wherein the first frame comprises a single target wake time (TWT) element or two aligned trigger-based broadcast TWT elements.
  14. 14 . The one or more non-transitory computer-readable storage media of claim 13 , wherein the first frame comprises two aligned trigger-based broadcast TWT elements; and wherein each of the two aligned trigger-based broadcast TWT elements comprises a Broadcast TWT Parameter Set field; wherein the Broadcast TWT Parameter Set field comprises a Request Type field; wherein the Request Type field comprises a Trigger field having a value of one; and wherein the Request Type field further comprises a Broadcast TWT Recommendation field having a value of five for indicating using the first channel or a value of six for indicating using the second channel.
  15. 15 . The one or more non-transitory computer-readable storage media of claim 14 , wherein the first frame further comprises an CSR information field for indicating information related to the first channel, a DSO or Enhanced SST Information field, or a combination thereof for indicating information related to the second channel.
  16. 16 . The one or more non-transitory computer-readable storage media of claim 13 , wherein each TWT element comprises a TWT Channel field for indicating a location of the second channel.
  17. 17 . The one or more non-transitory computer-readable storage media of claim 11 , wherein the first frame comprises a single TWT element; wherein the instructions, when executed, cause the one or more processors to perform further actions comprising: sending to the plurality of STAs a second frame; and wherein the second frame comprises information of the first subset of the plurality of STAs, and information of the second subset of the plurality of STAs.
  18. 18 . The one or more non-transitory computer-readable storage media of claim 11 , wherein the instructions, when executed, cause the one or more processors to perform further actions comprising: receiving a third frame; wherein the third frame is configured for triggering said broadcasting to the plurality of STAs the first frame comprising the CSR arrangement; wherein the CSR arrangement comprises the information of the TXOP; and wherein the first frame is configured to trigger the first subset of the plurality of STAs to communicate over the first channel using the one or more CSR-related parameters, and to trigger the second subset of the plurality of STAs to communicate over the second channel.
  19. 19 . The one or more non-transitory computer-readable storage media of claim 11 , wherein the first frame is configured for triggering each of the plurality of STAs to determine whether to use the first channel or to use the second channel for communication.
  20. 20 . The one or more non-transitory computer-readable storage media of claim 11 , wherein the first frame is configured for triggering each of the plurality of STAs to determine whether to use the first channel or to use the second channel for communication based on a comparison of a received signal strength (RSSI) of the first frame and an Overlapping Basic Service Set (OBSS) packet detection (OBSS PD) threshold.

Description

FIELD OF THE DISCLOSURE The present disclosure relates generally to communication systems, apparatuses, methods, and non-transitory computer-readable storage devices, and in particular to systems, apparatuses, methods, and non-transitory computer-readable storage devices for wireless communication employing coordinated spatial reuse (CSR) and dynamic sub-band operations (DSOs) for multi-access-points (MAPs). BACKGROUND Wireless communication systems such as IEEE 802.11 series (that is, WI-FI® series; WI-FI is a registered trademark of Wi-Fi Alliance, Austin, TX, USA) are known. However, in traditional WI-FI® networks, access points (APs) operate independently, which can lead to issues such as Overlapping Basic Service Set (OBSS) interference, suboptimal resource allocation, inconsistent user experiences (especially as network density increases), and/or the like. Multi-AP (MAP) coordination aims at enhancing network efficiency and user experience in environments with multiple APs, such as WI-FI® networks in densely populated areas. Among the MAP coordination technologies, coordinated spatial reuse (CSR) at the Transmission Opportunity (TXOP; which is a transmission opportunity granted by the AP to the non-AP station (STA)) level with power control is a prominent example, aiming to improve the efficiency and capacity of WI-FI® networks by optimizing the use of the radio spectrum. However, one of the primary concerns associated with TXOP-based CSR is its high computational complexity. Moreover, the effectiveness of CSR mechanisms can significantly diminish for cell-edge STAs operating within OBSSs. SUMMARY According to one aspect of this disclosure, there is provided a communication method comprising: communicating with an access point (AP) to determine a coordinated spatial reuse (CSR) arrangement therewith, the CSR arrangement comprising information of a first channel, a second channel, a service period (SP) or transmission opportunity (TXOP), and one or more CSR-related parameters; broadcasting to a plurality of stations (STAs) a first frame comprising the CSR arrangement; during the SP or TXOP, communicating with a first subset of the plurality of STAs over the first channel using the one or more CSR-related parameters; and during the SP or TXOP, communicating with a second subset of the plurality of STAs over the second channel. In some embodiments, the first channel is in a primary band and the second channel is a dynamic sub-band operation (DSO) channel in a secondary band. In some embodiments, the one or more CSR-related parameters comprise a maximum transmit power; and said during the SP or TXOP, communicating with the first subset of the plurality of STAs over the first channel using the one or more CSR-related parameters comprises: communicating with the first subset of the plurality of STAs over the first channel under the restriction of the maximum transmit power. In some embodiments, the communication method further comprises: partitioning the plurality of STAs into the first and second subsets based on its STA's reporting of beacon power from neighboring interfering APs that is measured periodically. In some embodiments, the CSR arrangement comprises the information of the SP; and the first frame is configured to trigger the first subset of the plurality of STAs to wake-up at a start of the SP, and to trigger the second subset of the plurality of STAs to wake-up before the start of the SP. In some embodiments, the communication method further comprises: sending to the plurality of STAs a second frame to confirm awake statuses of the plurality of STAs and the first or second channel that the plurality of STAs are to use. In some embodiments, the second frame is a trigger frame. In some embodiments, the second frame is a multi-user request-to-send (MU-RTS) trigger frame, a buffer status report poll trigger frame (BSRP TF), a basic trigger frame, a multi-user block acknowledgement (ACK) request (MU-BAR) trigger frame, or a Multi-STA block ACK (Multi-STA BA). In some embodiments, the communication method further comprises: receiving responses from the first subset of the plurality of STAs over the first channel, and receiving responses from the second subset of the plurality of STAs over the second channel. In some embodiments, the first frame comprises a single target wake time (TWT) element or two aligned trigger-based broadcast TWT elements. In some embodiments, the first frame comprises two aligned trigger-based broadcast TWT elements; and each of the two aligned trigger-based broadcast TWT elements comprises a Broadcast TWT Parameter Set field; the Broadcast TWT Parameter Set field comprises a Request Type field; the Request Type field comprises a Trigger field having a value of one; and the Request Type field further comprises a Broadcast TWT Recommendation field having a value of five for indicating using the first channel or a value of six for indicating using the second channel. In some emb