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A sectorized directional MAC proposal for mitigating deafness and energy consumption in mobile ad hoc networks

In the design of a Directional Medium Access Control (MAC) protocol for pervasive environments such the Mobile Ad hoc Networks (MANET), one of the most known problems that needs to be properly addressed is the deafness problem. Deafness could produce a large amount of collisions in the network and consequently a not negligible waste of energy. In this paper. we propose to partially mitigate this issue through the implementation of a Round-Robin MAC (RR-MAC) approach that provides for a logical sectorization of the transmission plane, limiting the maximum beamforming time of nodes, in order to reduce the frame collisions in the channel and at the same time to ensure an acceptable overall throughput in the network.