Full-duplex (FD) wireless communication is evolving into a practical technique, and many studies are being\nconducting in this area, especially regarding the physical layer. However, to exploit FD benefit successfully, efficient\nmedium access control (MAC) protocols are crucial as well as physical layer advances. Numerous FD-MAC protocols\nhave been proposed, but these MAC protocols cannot address all the issues encountered in this area. In addition, many\nhalf-duplex (HD) capable devices are present in existing wireless local area networks (WLANs), so there is an urgent\nneed to integrate FD clients and HD clients in the same WLAN. We refer to this type of WLAN as a heterogeneous\nWLAN (Het-WLAN). In this paper, we propose an FD-MAC for Het-WLAN, which considers all possible types of FD\ntransmissions. Our proposed FD-MAC protocol suppresses inter-user interference. Simulation results demonstrated\nthat a significant throughput gain (about 96%) could be achieved by using our proposed FD-MAC compared with\ntraditional HD communications. Moreover, our proposed MAC obtained better performance (average throughput\ngain of about 11%) compared with another existing FD-MAC design. In addition, probability analysis suggested that\nthe total probability of FD transmissions increased rapidly as the WLAN approached saturation conditions.
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