WASA '09 Proceedings of the 4th International Conference on Wireless Algorithms, Systems, and Applications
Hop-count based node-to-anchor distance estimation in wireless sensor networks
CCNC'09 Proceedings of the 6th IEEE Conference on Consumer Communications and Networking Conference
Constructing efficient rotating backbones in wireless sensor networks using graph coloring
Computer Communications
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Coverage is an important performance metric for many applications such as surveillance in Wireless Sensor Networks (WSNs). Coverage control is used to select as few active nodes as possible from all deployed sensor nodes such that sufficient coverage of the monitored area can be guaranteed, while reducing the energy consumption of each individual sensor node to prolong the network lifetime. This paper presents a distributed and localized technique called the Layered Diffusion based Coverage Control (LDCC). The LDCC protocol does not require information on the node location coordinates when selecting active nodes. Instead, it exploits the hop count information, which is easily obtained in a WSN, to select active sensor nodes. Furthermore, the LDCC protocol is very simple and does not require any sophisticated computation such as distance or covered area computation. Our simulation results show that the LDCC protocol achieves high coverage ratio while incurring very low message overhead compared with other existing protocols.