Wireless sensor networks: a survey
Computer Networks: The International Journal of Computer and Telecommunications Networking
A Distributed Connectivity Restoration Algorithm in Wireless Sensor and Actor Networks
LCN '07 Proceedings of the 32nd IEEE Conference on Local Computer Networks
Coverage and latency aware actor placement mechanisms in WSANs
International Journal of Sensor Networks
Energy-efficient deployment of Intelligent Mobile sensor networks
IEEE Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans
Movement control algorithms for realization of fault-tolerant ad hoc robot networks
IEEE Network: The Magazine of Global Internetworking
Application-centric connectivity restoration algorithm for wireless sensor and actor networks
GPC'11 Proceedings of the 6th international conference on Advances in grid and pervasive computing
Review: A survey on coverage and connectivity issues in wireless sensor networks
Journal of Network and Computer Applications
Localized motion-based connectivity restoration algorithms for wireless sensor and actor networks
Journal of Network and Computer Applications
An adaptive connectivity restoration algorithm for wireless sensor and actor networks
International Journal of Autonomous and Adaptive Communications Systems
Application-centric recovery algorithm for wireless sensor and actor networks
International Journal of Communication Networks and Distributed Systems
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Mobile sensor networks rely heavily on inter-sensor connectivity for collection of data. Nodes in these networks monitor different regions of an area of interest and collectively present a global overview of some monitored activities or phenomena. Since failure of a sensor leads to loss of connectivity it may cause a partitioning of the network. A number of approaches have been recently proposed that pursue node relocation in order to restore connectivity. However, these approaches tend to ignore the possible loss of coverage in some areas, either due to the failure itself or due to the connectivity-limited focus of the recovery. This paper opts to address the connectivity and coverage concerns in an integrated manner. A novel Coverage Conscious Connectivity Restoration (C3R) algorithm is presented. C3R involves one or multiple neighbors of the failed node to recover from the failure. Each neighbor temporarily relocates to substitute the failed node, one at a time, and then returns back to its original location. This leads to intermittent connectivity and monitoring of all the originally covered spots. C3R is validated through simulation. The simulation results confirm the effectiveness of the approach.