Exploiting Sink Mobility for Maximizing Sensor Networks Lifetime
HICSS '05 Proceedings of the Proceedings of the 38th Annual Hawaii International Conference on System Sciences - Volume 09
Avoiding Energy Holes in Wireless Sensor Networks with Nonuniform Node Distribution
IEEE Transactions on Parallel and Distributed Systems
Multiple Mobile Sinks Positioning in Wireless Sensor Networks for Buildings
SENSORCOMM '09 Proceedings of the 2009 Third International Conference on Sensor Technologies and Applications
Fast track article: Improved sensor network lifetime with multiple mobile sinks
Pervasive and Mobile Computing
Sink repositioning for enhanced performance in wireless sensor networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
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Recent years have witnessed an increasing need for wireless sensor networks in a wide range of applications specially for buildings automation. In such networks, many sensor nodes relay the sensed data hop by hop towards the nearest sink. The sensors closest to the sinks drain their energy much faster than distant nodes because they carry heavier traffic which causes prematurely the end of the network lifetime. Relocating the sinks can solve this problem by distributing the high traffic load among the sensors and increase the network lifetime. In this work, we propose a new scalable multi-sink heuristic algorithm (Hop) which regularly moves the sinks towards the distant nodes. We evaluated the performance of our solution by simulations and compared it with others schemes. The results show that it extends significantly the network lifetime and balances notably the energy consumption among the nodes. Such results can provide useful guidelines for real sensor network deployment.