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2011 19th IEEE International Conference on Network Protocols (2011)
Vancouver, AB, Canada
Oct. 17, 2011 to Oct. 20, 2011
ISBN: 978-1-4577-1392-7
pp: 89-98
Wei Dong , CSE Department, HKUST
Yunhao Liu , CSE Department, HKUST
Chao Wang , Beijing University of Posts & Telecommunications
Xue Liu , McGill University
Chun Chen , CS College, Zhejiang University
Jiajun Bu , CS College, Zhejiang University
Wireless reprogramming is a crucial technique for software deployment in wireless sensor networks (WSNs). Code dissemination is a basic building block to enable wireless repro-gramming. We present ECD, an Efficient Code Dissemination protocol leveraging 1-hop link quality information. Compared to prior works, ECD has three salient features. First, it supports dynamically configurable packet sizes. By increasing the packet size for high PHY rate radios, it significantly improves the transmission efficiency. Second, it employs an accurate sender selection algorithm to mitigate transmission collisions and transmissions over poor links. Third, it employs a simple impact-based backoff timer design to shorten the time spent in coordinating multiple eligible senders so that the largest impact sender is most likely to transmit. We implement ECD based on TinyOS and evaluate its performance extensively. Testbed experiments show that ECD outperforms state-of-the-art protocols, Deluge and MNP, in terms of completion time and data traffic. (e.g., about 20% less traffic and 20 -- 30% shorter completion time compared to Deluge).

C. Chen, J. Bu, Y. Liu, W. Dong, C. Wang and X. Liu, "Link quality aware code dissemination in wireless sensor networks," 2011 19th IEEE International Conference on Network Protocols(ICNP), Vancouver, AB, Canada, 2011, pp. 89-98.
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