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ROAD: a variable-radius MAC protocol for ad hoc wireless networks

In this paper, we propose the Request-to-send/Object-to-send/Agree-to-send/Declare-to-receive (ROAD) medium access control (MAC) protocol for heterogeneous ad-hoc networking. ROAD can support both fixed-radius and variable-radius transmissions, either single-channel, dual control/data channel, or multichannel ad hoc networks, both unicast and reliable multicast, as well as prioritization and QoS guarantees. ROAD also enables several novel ad-hoc networking paradigms and switching techniques. Moreover, the techniques and mechanisms proposed for ROAD can be applied to obtain extensions to IEEE 802.11 and Bluetooth with better performance or stronger capability for coexistence.