Hierarchical service-oriented routing of queries in wireless sensor networks

Authors:
Seifu Tatek Yazhy;Seung-Kyu Park
Affiliations:
Ajou University, Suwon, Korea;Ajou University, Suwon, Korea
Venue:
Proceedings of the 2nd International Conference on Interaction Sciences: Information Technology, Culture and Human
Year:
2009

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Abstract

Routing queries from a base station to a particular WSN node is preferable when it is done in a content oriented manner. Previously proposed query routing schemes are either not content based or lack to take advantage of a hierarchical organization of the network when they are content based. In this paper, we propose a hierarchical, service oriented routing scheme to achieve data centric routing of queries in wireless sensor networks. The routing scheme works by first forming clusters of the nodes based on various parameters that will eventually be used to form a query. We use an extended version of LEACH to organize the network into hierarchical clusters. The queries are then routed through the cluster heads to eventually reach the specific nodes that can provide the requested service. Our approach saves energy, extends network lifetime, does away with the need to duplicate a routing table on each node and improves the latency in routing queries.