Abstract
We consider the application of asymmetric full-duplex (AFD) communications in wireless local area networks (WLANs), exemplified by a Wi-Fi system. A full-duplex (FD)-enabled Wi-Fi access point communicates simultaneously uplink (UL) and downlink (DL) with a pair of half-duplex (HD) Wi-Fi stations (STAs). AFD enhances spectrum efficiency and reduces latency for STAs; however, it faces challenges related to node selection, switching between AFD and HD modes, and rate control. In this paper, we propose the \textit{asymmetric FD-mode and rate adaptation} (AFRA) scheme. AFRA relies on partially observable Markov decision process (POMDP) to adapt the UL and DL transmission rates as well as the transmission mode (i.e., AFD or HD; UL-only or DL-only), considering the future expected channel and interference conditions. Our simulation results indicate that AFRA outperforms classical rate-adaptation schemes and achieves up to 95% of the optimal performance of AFD communications.
Original language | English (US) |
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Title of host publication | 2018 IEEE International Conference on Communications, ICC 2018 - Proceedings |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Volume | 2018-May |
ISBN (Print) | 9781538631805 |
DOIs | |
State | Published - Jul 27 2018 |
Event | 2018 IEEE International Conference on Communications, ICC 2018 - Kansas City, United States Duration: May 20 2018 → May 24 2018 |
Other
Other | 2018 IEEE International Conference on Communications, ICC 2018 |
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Country | United States |
City | Kansas City |
Period | 5/20/18 → 5/24/18 |
Keywords
- Asymmetric full-duplex
- Joint rate and duplex-mode control
- TXOP sharing
ASJC Scopus subject areas
- Computer Networks and Communications
- Electrical and Electronic Engineering