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Title: DPLC : dynamic packet length control in wireless sensor networks
Authors: Dong, Wei
Liu, Xue
Chen, Chun
He, Yuan
Chen, Gong
Liu, Yunhao
Bu, Jiajun
Keywords: Channel estimation
Wireless sensor networks
Dynamic packet length control
Packet length optimization
Issue Date: Mar-2010
Citation: Proceedings IEEE INFOCOM 2010, 14-19 March 2010, San Diego, CA, USA
Abstract: Previous packet length optimizations for sensor networks often employ a fixed optimal length scheme, while in this study we present DPLC, a Dynamic Packet Length Control scheme. To make DPLC more efficient in terms of channel utilization, we incorporate a lightweight and accurate link estimation method that captures both physical channel conditions and interferences. We further provide two easy-to-use services, i.e., small message aggregation and large message fragmentation, to facilitate upper-layer application programming. The implementation of DPLC based on TinyOS 2.1 is lightweight, with respect to computation, memory, and header overhead. Our experiments using a real indoor testbed running CTP show that DPLC results in a 13% reduction in transmission overhead and a 41.8% reduction in energy consumption compared with the original protocol, and a 21% reduction in transmission overhead and a 15.1% reduction in energy consumption compared with simple aggregation schemes.
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