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Mobile base stations placement and energy aware routing in wireless sensor networks

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2 Author(s)
A. P. Azad ; Dept. of Electr. & Comput. Eng., Indian Inst. of Sci., Bangalore ; A. Chockalingam

Increasing network lifetime is important in wireless sensor/ad-hoc networks. In this paper, we are concerned with algorithms to increase network lifetime and amount of data delivered during the lifetime by deploying multiple mobile base stations in the sensor network field. Specifically, we allow multiple mobile base stations to be deployed along the periphery of the sensor network field and develop algorithms to dynamically choose the locations of these base stations so as to improve network lifetime. We propose energy efficient low-complexity algorithms to determine the locations of the base stations; they include i) top-Kmax algorithm, ii) maximizing the minimum residual energy (max-min-RE) algorithm, and iii) minimizing the residual energy difference (MinDiff-RE) algorithm. We show that the proposed base stations placement algorithms provide increased network lifetimes and amount of data delivered during the network lifetime compared to single base station scenario as well as multiple static base stations scenario, and close to those obtained by solving an integer linear program (ILP) to determine the locations of the mobile base stations. We also investigate the lifetime gain when an energy aware routing protocol is employed along with multiple base stations

Published in:

IEEE Wireless Communications and Networking Conference, 2006. WCNC 2006.  (Volume:1 )

Date of Conference:

3-6 April 2006