Combining Power Adjustment and Node’s Movement for Connectivity Restoration in Sensor Networks
Chun Hui Wu, hong sheng chen · Applied Mechanics and Materials · 2014
Mobile sensor networks (MSNs) have many applications in recent years, especially in some harsh environment, such as battlefield reconnaissance. MSNs may suffer from a large-scale damage which causes many nodes to fail and the network to get partitioned into isolate islands. So in order to avoid negative effects on the application, restoring network connectivity is crucial in such case. In this paper, we propose a novel method, CPANMCR, which combines power adjustment and node’s movement to restore the network connectivity. In CPANMCR mainly include three phases: firstly detecting the boundary nodes of every isolate island, then adjusting the power of boundary node to restore the connection, and finally moving mobile nodes to the appropriate location to restore the connectivity of the entire network. Extensive simulation experiments demonstrate that the proposed method can guarantee network connectivity and reduce the total travel distance.