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A Multi-level Weight Based Routing Algorithm for Prolonging Network Lifetime in Cluster Based Sensor Networks
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DOI：10.1007/978-81-322-3592-7_19.png)
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Abstract
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Energy efficiency in routing is an important design issue in wireless sensor networks where nodes are battery operated which may or may not be rechargeable in many cases. Due to relaying high volume data packets, nodes closer to the base station consume more energy than other nodes in the network. In this paper, we propose a Multi-level Weight based Routing Algorithm (abbreviated shortly as MWRA) for cluster based sensor networks with an aim to minimize inter-cluster energy consumption and to balance the energy dissipation at nodes. In MWRA, clusterheads are assigned levels based on the distance between the clusterheads and the base station and then a 2-connected backbone network is formed to find energy efficient next hop nodes. Moreover, a weight function based routing technique is used based on which clusterhead chooses its relay node for forwarding the packets. In MWRA, the network reconfiguration is performed periodically to achieve balanced energy consumption among clusterheads. The experimental results show that our algorithm significantly improves the network lifetime and the energy efficiency of the network than the existing clustering algorithm.
Keywords:
Clustering
Level
Backbone network
Network lifetime
Backbone range
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