A Routing Protocol with Stepwise Interest Retransmission for Wireless Sensor Networks

Masaki BANDAI  Takamasa MIOKI  Takashi WATANABE  

IEICE TRANSACTIONS on Communications   Vol.E91-B   No.5   pp.1446-1453
Publication Date: 2008/05/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.5.1446
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Network
wireless sensor networks (WSN),  routing,  directed difusion,  node mobility,  

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In this paper, a routing protocol referred to as Directed Diffusion with Stepwise Interest Retransmission (DD/SIR) for wireless sensor networks is proposed to mitigate power consumption considering node mobility. In DD/SIR, a sink retransmits interest. The propagation areas of the interest are narrowed stepwisely. In addition, according to the number of hops between the sink and sensor nodes, the data transmission timing is controlled sequentially. By both theoretical analysis and computer simulation, we evaluate the performance of DD/SIR. We show that DD/SIR can mitigate control overhead and realize low power operation without degrading data reachability to the sink. Especially, at a small number of data sending nodes, DD/SIR is more effective than the conventional routing.