Computer and Modernization

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 Comprehensive Strategy Research for Network Clustering and Node Sleeping

  

  1. School of Software, Central South University, Changsha 410075, China
  • Received:2014-09-18 Online:2015-04-27 Published:2015-04-29

Abstract:

To conserve energy, we can use method for approximate data collection. Sensor nodes with the same readings can be clustered such that only the representative
nodes report their readings. Also, we can use sensor activity scheduling mechanism that consists on turning off redundant sensors while maintaining coverage by the remaining
active nodes to prolong the life time of WSN. However, the two techniques seem independent and few works consider both of them. In this paper, we propose an efficient protocol
synthesizing network clustering and sensor activity scheduling. The proposed protocol determine θ-similar_sets of node and only the Rnode need to report their readings. Also,
the protocol divides the network lifetime into activity rounds. In each round a number of active nodes (Rnode and members) is selected to ensure coverage while others are sleep.
Compared with some existing protocols, simulation results show that our protocol can have a longer lifetime with a high network coverage.

Key words:  clustering, energy consumption, network lifetime, node sleeping, representative node