Relay node selection in randomly deployed homogeneous clustered wireless sensor networks

Aslam, Nauman, Robertson, William, Phillips, William and Sivakumar, Shyamala (2007) Relay node selection in randomly deployed homogeneous clustered wireless sensor networks. In: Proceedings of the 2007 International Conference on Sensor Technologies and Applications (SENSORCOMM 2007). IEEE, Piscataway, NJ, pp. 418-423. ISBN 978-0769529882

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Extended network life is one of the fundamental objectives in the design of wireless sensor network systems. Clustering protocols help in achieving this objective in an efficient and scalable manner by organizing nodes into small hierarchical groups. In single hop clustering protocols, assumptions are made about direct communication from the cluster heads to the base station. Such assumptions seem strong for realistic situation as the cluster head may have limited radio transmission range in some cases. Relay nodes could be used to leverage additional energy saving through multi-hop transmissions. Moreover, for a randomly deployed homogeneous network, placement of either relays or cluster heads at predetermined locations poses challenges including mobility, location awareness and energy provisioning. In this paper we propose a three-tier architecture for randomly deployed wireless sensor networks without making any assumptions about mobility and placement of nodes at desired locations. We also propose and evaluate heuristic based algorithms for relay node selection. Simulation results demonstrate significant gains in network life time by using the proposed algorithms.

Item Type: Book Section
Subjects: G400 Computer Science
Department: Faculties > Engineering and Environment > Computer and Information Sciences
Depositing User: Sarah Howells
Date Deposited: 24 Aug 2012 15:59
Last Modified: 12 Oct 2019 22:29

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