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Vol. 14-2, Special Issue, March 2012, pp.196-210




An Effective Approach for Handling both Open and Closed Voids in Wireless Sensor Networks


Mohamed AISSANI, Sofiane BOUZNAD, Abdelmalek Hariza
and Salah-Eddine

Computer Science Unit, Ecole Militaire Polytechnique (EMP)

P.O. Box 17, Bordj-El-Bahri 16111, Algiers, Algeria

E-mail: maissani@gmail.com, bouznad.sofiane@gmail.com, malik-abd@hotmail.com, s.alia@hotmail.com



Received: 19 November 2011   /Accepted: 20 December 2011   /Published: 12 March 2012

Digital Sensors and Sensor Sysstems


Abstract: Closed voids are created within a deployed wireless sensor network (WSN), but open voids are often formed on the boundary of this network. Geographical routing protocols must handle these voids where packets fall into local minima. To contribute on resolving this problem, we propose in this paper an effective void-tolerant routing approach based on two mechanisms for handling any kind of void. Our approach uses simple and effective algorithms ensuring discovery and maintenance of voids in a WSN. Contrary to existing void-handling techniques, our proposal uses information of all voids for better orienting data packets toward their destination in optimal paths around the voids. Proposed approach has good performances in terms of packet delivery ratio, average routing path length, control packets overhead, energy of network and boundary nodes consumed per delivered packet, and average residual deadline of delivered packets.


Keywords: Sensor networks, Geographical routing, Routing voids, Void-handling techniques


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