Low latency solutions for restricted target wake time (r-TWT) during multi-link operation (MLO)

US12047873B2 · kind B2 · utility

Assignee

• QUALCOMM Incorporated · US

Inventors

• Gaurang NAIK · San Diego, US
• Abdel Karim AJAMI · San Diego, US
• Alfred Asterjadhi · San Diego, US
• George Cherian · San Diego, US
• Abhishek Pramod Patil · San Diego, US
• Sai Yiu Duncan Ho · San Diego, US
• Yanjun Sun · Beijing, CN

Key dates

• Filing date: Dec 22, 2021
• Grant date: Jul 23, 2024
• Expiry date: May 13, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02D30/70
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for protecting latency-sensitive communications among multi-link devices (MLDs). An access point (AP) MLD may establish multiple communication links with a non-AP MLD and schedule a restricted target wake time (r-TWT) service period (SP) on one of the links (the “r-TWT link”). In some aspects, when a transmit opportunity (TXOP) acquired on a non-r-TWT link overlaps the r-TWT SP, the TXOP may be extended to support an exchange of latency-sensitive traffic on the non-r-TWT link. In some other aspects, any TXOPs occurring on non-r-TWT links may be terminated prior to the start of the r-TWT SP so that latency-sensitive traffic can be exchanged on the r-TWT link during the SP. An AP MLD also may schedule SPs on multiple communication links. In some aspects, the AP MLD may transfer a TWT agreement between the communication links.