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SIGCOMM
2004
ACM

Comparison of routing metrics for static multi-hop wireless networks

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Comparison of routing metrics for static multi-hop wireless networks
Routing protocols for wireless ad hoc networks have traditionally focused on finding paths with minimum hop count. However, such paths can include slow or lossy links, leading to poor throughput. A routing algorithm can select better paths by explicitly taking the quality of the wireless links into account. In this paper, we conduct a detailed, empirical evaluation of the performance of three link-quality metrics— ETX, per-hop RTT, and per-hop packet pair—and compare them against minimum hop count. We study these metrics using a DSR-based routing protocol running in a wireless testbed. We find that the ETX metric has the best performance when all nodes are stationary. We also find that the per-hop RTT and per-hop packet-pair metrics perform poorly due to self-interference. Interestingly, the hop-count metric outperforms all of the link-quality metrics in a scenario where the sender is mobile. Categories and Subject Descriptors C.2.1 [Network Architecture and Design]: Wireless N...
Richard Draves, Jitendra Padhye, Brian Zill
Added 30 Jun 2010
Updated 30 Jun 2010
Type Conference
Year 2004
Where SIGCOMM
Authors Richard Draves, Jitendra Padhye, Brian Zill
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