This paper proposes a novel distributed
multi-channel medium access control (MAC) protocol using fast and slow hopping
sequences with dual radio interfaces. Specifically, one interface follows fast
hopping and is primarily for transmission, and the other interface follows slow
hopping and is generally for reception. The proposed protocol, which is in line
with the IEEE 802.11 MAC strategies, is based on the multiple rendezvous
approach and able to enhance the network performance and resolve the
congestion. An analytical model is developed to evaluate the network
performance in terms of the aggregate throughput. Furthermore, the maximum
saturation throughput and the upper achievable throughput are computed.
Simulations using network simulator-2 (ns-2) are conducted to validate the
analytical model and demonstrate the significant enhancement of the proposed
protocol in single- and multi-hop networks
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