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International Journal of Distributed Sensor Networks
Volume 2012 (2012), Article ID 602159, 11 pages
http://dx.doi.org/10.1155/2012/602159
Research Article

Triangular Energy-Saving Cache-Based Routing Protocol by Energy Sieving

Graduate Institute of Computer and Communication Engineering, National Taipei University of Technology, Taipei 10608, Taiwan

Received 19 March 2011; Revised 21 June 2011; Accepted 5 July 2011

Academic Editor: Yuhang Yang

Copyright © 2012 Chiu-Ching Tuan and Yi-Chao Wu. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In wireless ad hoc networks, designing an energy-efficient routing protocol is a major issue since nodes are energy limited. To address energy issue, we proposed a triangular energy-saving cached-based routing protocol by energy sieving (TESCES). TESCES offered a grid leader election by energy sieving (GLEES), a cache-based grid leader maintenance (CGLM), and a triangular energy-saving routing discovery (TESRD). In GLEES, only few nodes join in grid leader election to be elected as a grid leader. New grid leader is elected directly by cache without sending extra control packets in CGLM. TESRD selects an energy-efficient path to transmit data packets. Hence, TESCES could save more energy for transmitting packets and prolong routing lifetime. Simulation results showed that TESCES could reduce 31% of energy consumption, prolong 67% of routing lifetime, and increase 19% of survival ratio of nodes. Furthermore, TESCES may be more outstanding as the number of nodes increased.