Connectivity guarantee during wireless sensor networks deployment

In this paper, we consider the self-deployment of wireless sensor networks. We present a mechanism which allows to preserve network connectivity during the deployment of mobile wireless sensors. Our algorithm is distributed and is based on a subset of neighbours for motion decision. Our algorithm maintains a connected topology regardless of the direction chosen by each sensor. To preserve connectivity, the distance covered by the mobile nodes is constrained by the connectivity of the node to its neighbours in a connected subgraph like the relative neighbourhood graph (RNG). We show the connectivity preservation property of our algorithm through analysis and present some simulation results for the full coverage problem.