Impact of the Hybrid Multi-channel Multi-interface Wireless Mesh Network on ETX-Based Metrics Performance

  • Hassen Mogaibel
  • Mohamed Othman
  • Shamala Subramaniam
  • Nor Asila Wati Abdul Hamid
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 99)


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.


Wireless mesh network multi-radio on-demand routing multi-channel multi-link 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Hassen Mogaibel
    • 1
  • Mohamed Othman
    • 1
  • Shamala Subramaniam
    • 1
  • Nor Asila Wati Abdul Hamid
    • 1
  1. 1.Department of Communication Technology and NetworkUniversiti Putra MalaysiaSerdangMalaysia

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