A Localized Route Discovery for On-Demand Routing Protocols in Event-Driven Wireless Sensor Networks

Dong-Hyun CHAE
Kyu-Ho HAN
Kyung-Soo LIM
Sae-Young AHN
Sun-Shin AN

Publication
IEICE TRANSACTIONS on Communications   Vol.E89-B    No.10    pp.2828-2840
Publication Date: 2006/10/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.10.2828
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Network
Keyword: 
sensor network,  on-demand routing protocol,  route discovery,  data aggregation,  energy conservation,  

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Summary: 
In this paper, the problem of Redundant Duplicated RREQ Network-wide Flooding (RDRNF), induced by multiple sensor nodes during route discovery in event-driven wireless sensor networks, is described. In order to reduce the number of signaling messages during the route discovery phase, a novel extension, named the Localized Route Discovery Extension (LRDE), to the on-demand ad hoc routing protocol, is proposed. The LRDE reduces energy consumption during route discovery. The heuristically and temporarily selected Path Set-up Coordinator (PSC) plays the role of a route request broker that alleviates redundant route request flooding. The LRDE also sets a route path be aggregation-compatible. The PSC can effectively perform data aggregation through the routing path constructed by the LRDE. The simulation results reveal that significant energy is conserved by reducing signaling overhead and performing data aggregation when LRDE is applied to on-demand routing protocols.