Abstract
Recent research has shown the feasibility of in-band full duplex (FD) wireless operation allowing wireless nodes to send and receive in the same frequency band at the same time. In this paper, we propose a novel FD medium access control (MAC) protocol, and discuss two issues related to the FD MAC layer. These include fairness between half duplex (HD) and FD users, and a channel access mechanism called centralized random backoff (CRB) to resolve collisions caused by the random backoff algorithm adopted in the IEEE 802.11 MAC standard. Simulation results show that the protocol provides evenly distributed channel access opportunities to both FD and legacy HD users. Moreover, it is demonstrated by simulation that using CRB complements the random backoff algorithm and improves the performance of HD and FD MAC protocols for Wi-Fi networks.
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