Abstract
Since delay and throughput are important Quality of Service parameters in many wireless applications, we study the performance of different multi-channel Media Access Control (MAC) protocols in ad hoc networks by considering these measures in this paper. For this, we derive average access delays and throughputs in closed-form for different multi-channel MAC approaches in case of Poisson arrivals. Correctness of theoretical results is verified by simulations. Performance of the protocols is analyzed with respect to various critical operation parameters such as number of available channels, packet size and arrival rate. Presented results can be used to evaluate the performance of multi-channel MAC approaches in various scenarios and to study the impact of multi-channel communications on different wireless applications. More importantly, the derived theoretical results can be exploited in network design to ensure system stability.
Highlights
Multi-channel communications form the basis of various future wireless systems such as cognitive radio, generation cellular and wireless sensor networks (WSNs)
Results and analysis we analyze the performance of different multi-channel Media Access Control (MAC) approaches with respect to throughput and average access delay using previously deduced analytical results which were confirmed by simulations
In this subsection we analyze the performance of different multi-channel MAC protocols with respect to average access delay
Summary
Multi-channel communications form the basis of various future wireless systems such as cognitive radio, generation cellular and wireless sensor networks (WSNs). We derive average access delays and throughputs for different multi-channel MAC approaches in case of Poisson arrivals and analyze the performance with respect to delay and throughput. Since the probabilities of successful transmission and that the channel is sensed busy match without using Equation (23) and retransmissions, we conclude that the theoretical results for SYN-MAC are correct.
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