Multi-slot reservation-based multi-channel MAC protocol for dense wireless ad-hoc networks

A multi-channel medium access control (MAC) is proposed for dense wireless ad-hoc networks, called MSR-MMAC, which aims to enhance throughput by introducing multi-slot reservation into multiple channels environment. Based on the integration of carrier sense multiple access with collision avoidance and time division multiple access, MSR-MMAC alternately implements contention-based channel access and multiple reservation-based data transmission on a certain frequency channel. Besides, the authors build an enhanced Markov model to analyse the throughput performance of the proposed MSR-MMAC protocol, which is further validated by extensive simulations using ns-2. Simulation results show that the proposed MSR-MMAC protocol reduces the average collision probability and improves throughput significantly.