DPLC: dynamic packet length control in wireless sensor networks

Authors:
Wei Dong;Xue Liu;Chun Chen;Yuan He;Gong Chen;Yunhao Liu;Jiajun Bu
Affiliations:
Zhejiang Key Lab. of Service Robot, College of Comp. Sci., Zhejiang University;School of Comp. Sci., McGill University;Zhejiang Key Lab. of Service Robot, College of Comp. Sci., Zhejiang University;Dept. of Comp. Sci. & Eng., Hong Kong University of Science and Technology;Zhejiang Key Lab. of Service Robot, College of Comp. Sci., Zhejiang University;Dept. of Comp. Sci. & Eng., Hong Kong University of Science and Technology;Zhejiang Key Lab. of Service Robot, College of Comp. Sci., Zhejiang University
Venue:
INFOCOM'10 Proceedings of the 29th conference on Information communications
Year:
2010

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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-touse 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.