NEC: node energy based clustering protocol for wireless sensor networks with guaranteed connectivity

Authors:
Shilpa Dhar;Krishnendu Roy;Rajgopal Kannan
Affiliations:
Department of Computer Science, Louisiana State University, Baton Rouge, LA;Department of Electrical and Computer Engineering, Louisiana State University, Baton Rouge, LA;Department of Computer Science, Louisiana State University, Baton Rouge, LA
Venue:
ICDCIT'04 Proceedings of the First international conference on Distributed Computing and Internet Technology
Year:
2004

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Abstract

Wireless sensor networks are continually being deployed in various application areas which are posing various new challenges Yet, one problem that still remains central to the operability and applicability of sensor networks is the limited energy of the sensor nodes which directly limits the network lifetime Various schemes have been proposed to optimize the energy conservation, some of which use network-redundancy to switch off the radios of some nodes Ensuring minimum connectivity in such a case is the main objective, which the existing papers address inadequately We propose a scheme of topology control based on the concept of strong and weak nodes In our protocol clustering is done keeping in mind the lifetime of all the nodes that are awake and not just the lifetime of the cluster-head hence ensuring that minimum connectivity is always guaranteed.