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ThinkMind // International Journal On Advances in Telecommunications, volume 5, numbers 3 and 4, 2012 // View article tele_v5_n34_2012_13


Efficient Forwarding Approach on Boundaries of Voids in Wireless Sensor Networks

Authors:
Mohamed Aissani
Sofiane Bouznad
Salah-Eddine Allia
Abdelmalek Hariza

Keywords: Wireless sensor networks; geographical routing; void-handling techniques; closed voids; open voids

Abstract:
Geographical routing protocols are scalable, but they must handle voids appearing in wireless sensor networks. Existing void-handling techniques present limits, particularly in real-time applications. Consequently, we propose in this paper an efficient forwarding approach that orients any packet which arrives at a boundary node in the shortest path towards the sink. The handled voids can be either closed within a deployed sensor network or open located on the network boundary. To keep unchanged the size of each created void for a long time, the use of a 2-hop forwarding mode is privileged in our approach to preserve the limited energy of boundary nodes. The information needed for our mechanisms is provided by simple and reactive algorithms that we propose in this paper to discover and maintain the boundaries of voids. Associated with the SPEED real-time routing protocol, and evaluated in several conditions, our proposal performs very well in terms of packet delivery ratio, end-to-end delay, energy consumption, control packet overhead and energy balancing.

Pages: 252 to 263

Copyright: Copyright (c) to authors, 2012. Used with permission.

Publication date: December 31, 2012

Published in: journal

ISSN: 1942-2601

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