Abstract
Ensuring that every sensor node has the same code version is challenging in dynamic, unreliable multi-hop sensor networks. When nodes have different code versions, the network may not behave as intended, wasting time and energy. We propose and evaluate DHV, an efficient code consistency maintenance protocol to ensure that every node in a network will eventually have the same code. DHV is based on the simple observation that if two code versions are different, their corresponding version numbers often differ in only a few least significant bits of their binary representation. DHV allows nodes to carefully select and transmit only necessary bit level information to detect a newer code version in the network. DHV can detect and identify version differences in O(1) messages and latency compared to the logarithmic scale of current protocols. Simulations and experiments on a real MicaZ testbed show that DHV reduces the number of messages by 50%, converges in half the time, and reduces the number of bits transmitted by 40-60% compared to DIP, the state-of-the-art protocol.
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Dang, T., Bulusu, N., Feng, Wc., Park, S. (2009). DHV: A Code Consistency Maintenance Protocol for Multi-hop Wireless Sensor Networks. In: Roedig, U., Sreenan, C.J. (eds) Wireless Sensor Networks. EWSN 2009. Lecture Notes in Computer Science, vol 5432. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-00224-3_21
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DOI: https://doi.org/10.1007/978-3-642-00224-3_21
Publisher Name: Springer, Berlin, Heidelberg
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