CFFD-MAC: A Hybrid MAC for Collision Free Full-Duplex Communication in Wireless Ad-Hoc Networks

Infrastructure-less (sometimes known as ad-hoc) networking paradigm is very appealing and potentially shaping its future into almost all emerging networks (i.e., IoT, wireless sensor networks, vehicular ad-hoc emergency, tactical radio etc.). However, when conventional protocols are used, such often perform poorly, mainly because of interference within the network limited throughput. Recent advancements in communications have enabled full-duplex (FD) operation by suppressing self-interference, which can theoretically double medium access control (MAC) like carrier-sense multiple with collision avoidance (CSMA/CA) favor half-duplex (HD) fail to benefit from FD transmission opportunities. This article proposes a novel hybrid MAC protocol for networks. The proposed combines time division (TDMA) IEEE 802.11 distributed coordination function (DCF) strengths chains time-slotted contention-based frames collision-free data frames. aim fully utilize opportunities increase modifies request-to-send (RTS) clear-to-send (CTS) DCF form FD-RTS/CTS These used enable among neighbors. scheme mitigates issues hidden-node problem (HNP) exposed-node (ENP). It also allows concurrent transmissions manner. model generic be applied any network. In this article, design single channel transceivers. We compared CSMA/CA both HD simulation results show 30% gain throughput, reduced latency, fairness participating nodes.