An Efficient MAC Protocol for Wireless Ad-Hoc Networks

S. Park, P.J. Weber, R. Jayaraman, and L.C. Robles Felix (USA)


Ad-Hoc networks, MAC, Throughput, Concurrent, Wireless


Efficiency of communication in mobile Ad-hoc Networks heavily depends on the underlying MAC protocols that provide both timely and energy-efficient communication between nodes. Most of the researches proposed so far have focused primarily on minimizing energy costs at the expense of routing delays by creating paths with small transmission times. As a result, the cost of local communication might be decreased, but network-wise throughput might be also decreased due to the packet collision and contention. This paper proposes an algorithm that attempts to maximize the simultaneous transmission and at the same time minimize the collisions, if it is energy-efficient and creates higher degree of communication in the network. The proposed algorithm achieves it by actively finding intermediate nodes that will allow for concurrent communication between multiple pairs of nodes without the use of local information. Further improvements are made by utilizing a priori information about transmission ranges and the use of multiple communication channels.

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