NQAR: Network Quality Aware Routing in Error-Prone Wireless Sensor Networks

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Executive Summary

The authors propose a Network Quality Aware Routing (NQAR) mechanism to provide an enabling method of the delay-sensitive data delivery over error-prone wireless sensor networks. Unlike the existing routing methods that select routes with the shortest arrival latency or the minimum hop count, the proposed scheme adaptively selects the route based on the network qualities including link errors and collisions with minimum additional complexity. It is designed to avoid the paths with potential noise and collision that may cause many non-deterministic back-offs and retransmissions. They propose a generic framework to select a minimum cost route that takes the packet loss rate and collision history into account.

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