Troubleshooting wireless mesh networks

Authors:
Lili Qiu;Paramvir Bahl;Ananth Rao;Lidong Zhou
Affiliations:
University of Texas at Austin;Microsoft Research;UC Berkely;Microsoft Research
Venue:
ACM SIGCOMM Computer Communication Review
Year:
2006

Citing 4
Cited 13

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SCUBA: focus and context for real-time mesh network health diagnosis

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Abstract

Effective network troubleshooting is critical for maintaining efficient and reliable network operation. Troubleshooting is especially challenging in multi-hop wireless networks because the behavior of such networks depends on complicated interactions between many factors such as RF noise, signal propagation, node interference, and traffic flows. In this paper we propose a new direction for research on fault diagnosis in wireless mesh networks. Specifically, we present a diagnostic system that employs trace-driven simulations to detect faults and perform root cause analysis. We apply this approach to diagnose performance problems caused by packet dropping, link congestion, external noise, and MAC misbehavior. In a 25 node mesh network, we are able to diagnose over 10 simultaneous faults of multiple types with more than 80% coverage.