Abstract

This paper proposes a model of hop scheduling mechanisms for Distributed Multi-hop Wireless Mobile Adhoc Networks to evaluate its performance in actual application scenarios. Based on automatic repeat request (ARQ) mechanism, packets transmission failure due to channel environment is considered. In the multi-hop networks, single-hop scheduling and multi-hop scheduling mechanisms are used to analyze factors such as transmission success probability and maximum allowable back-off times which influence average end-to-end delay and resource efficiency. Our analysis and numerical results indicate that the single-hop scheduling mechanism can perform well both in resource efficiency and delay even under bad channel quality. The triple-hop scheduling mechanism can further reduce the end-to-end delay within a certain range of maximum back-off number compared to the double-hop mechanism. The system can refer to different medium access control (MAC) layer parameters to balance between resource efficiency and delay under different performance demands. According to the network traffic hops combined with different hop scheduling mechanisms, a reference for relevant performance indicators in system design is build.

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