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Mathematical Problems in Engineering
Volume 2015, Article ID 608121, 11 pages
http://dx.doi.org/10.1155/2015/608121
Research Article

Energy Balanced Redeployment Algorithm for Heterogeneous Wireless Sensor Networks

School of Automation, Beijing Institute of Technology, Beijing 100081, China

Received 15 August 2014; Accepted 1 September 2014

Academic Editor: Yun-Bo Zhao

Copyright © 2015 Guang Ye et al. 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

Wireless sensor networks (WSNs) have gained worldwide attention in recent years. Since WSNs can be conveniently deployed to monitor a given field of interest, they have been considered as a great long-term economic potential for military, environmental, and scientific applications and so forth. One of the most active areas of research in WSNs is the coverage which is one of the most essential functions to guarantee quality of service (QoS) in WSNs. However, less attention is paid on the heterogeneity of the node and the energy balance of the whole network during the redeployment process. In this work, the energy balanced problems in mobile heterogeneous WSNs redeployment have been analyzed. The virtual force algorithm with extended virtual force model is used to improve the QoS of the deployment. Furthermore energy model is added to enhance or limit the movement of the nodes so that the energy of nodes in the whole WSNs can be balanced and the lifetime of the networks can be prolonged. The simulation results verify the effectiveness of this proposed algorithm.