Abstract
In this paper, we study the impact of multi-radio multi-channel Wireless Mesh Networks (WMNs) characteristics on the performance of Expected Transmission Count based metrics (ETX-based). Many characteristics of multi-radio multi-channel WMNs such as channel switching, an absence of a direct connection between neighbors, and difficulty of measuring the packet loss probability in the both forward and reverse direction may affect the performance of ETX-based metrics in hybrid multi-radio multi-channel WMNs compared to static multi-radio multi-channel WMNs. Through simulation experiments, we compared the performance of ETX-based metrics with Hop count metric. The experiment result shows the superior improvement of hope count metrics over ETX-based metrics in terms of packet delivery ratio, goodput, and end-to-end delay. From the results, we concluded that major causes of the poor performance of ETX-based metrics in a multi-radio multi-channel WMNs are the extra delay caused by interface switching between channels and the inaccurate value of the ETX-based metrics.
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Mogaibel, H., Othman, M., Subramaniam, S., Hamid, N.A.W.A. (2011). Impact of the Hybrid Multi-channel Multi-interface Wireless Mesh Network on ETX-Based Metrics Performance. In: Wan, X. (eds) Electrical Power Systems and Computers. Lecture Notes in Electrical Engineering, vol 99. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-21747-0_19
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DOI: https://doi.org/10.1007/978-3-642-21747-0_19
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