NQAR: Network quality aware routing in error-prone wireless sensor networks
Abstract
We 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 backoffs and retransmissions.We propose a generic framework to select a minimum cost
route that takes the packet loss rate and collision history into account. NQAR uses a data centric approach to estimate a single-hop
delay based on processing time, propagation delay, packet loss rate, number of backoffs, and the retransmission timeout between
two neighboring nodes. This enables a source node to choose the shortest expected end-to-end delay path to send a delay-sensitive
data. The experiment results show that NQAR reduces the end-to-end transfer delay up to approximately 50% in comparison with
the latency-based directed diffusion and the hop count-based directed diffusion under the error-prone network environments.
Moreover, NQAR shows better performance than those routing methods in terms of jitter, reachability, and network lifetime.
Citation
Jaewon Choi, Baek-Young Choi, Sejun Song, Kwang-Hui Lee (2010). NQAR: Network Quality Aware Routing in Error-Prone Wireless Sensor Networks, EURASIP Journal on Wireless Communications and Networking 2010: 1-7. http://jwcn.eurasipjournals.com/content/2010/1/409724