Resource Allocation with Reduced Feedback and Distributed Multiple Access in Full-Duplex Cellular and WiFi Systems

Full-duplex promises to double the data rates by enabling simultaneous transmission and reception over the same frequency band. Enabling full-duplex in cellular and WiFi networks creates a new inter-user interference between uplink and downlink transmissions. To effectively mitigate this interference, we propose and analyze a novel user-pair scheduling and mode selection algorithm that operates with very limited feedback and achieves high spectral efficiency. We then develop new distributed multiple access protocol for full-duplex WiFi networks, which exploit the presence of hidden nodes and the signalling available in the WiFi standards. These can increase the throughput by up to 100%.

References:

R. Kiran and N. B. Mehta, “User-pair scheduling and mode selection in asymmetric full-duplex systems with limited feedback: Algorithm and scaling laws,” IEEE Transactions on Wireless Communications, Vol. 20, No. 5, May 2021, pp. 2863–2875.

R. Kiran, Neelesh B. Mehta, and J. Thomas, “Design and Network Topology-Specific Renewal-Theoretic Analysis of a MAC Protocol for Asymmetric Full-Duplex WLANs,” IEEE Trans. Communications, Vol. 67, No. 12, Dec. 2019, pp. 8532–8544