Geography-informed energy conservation for Ad Hoc routing
Proceedings of the 7th annual international conference on Mobile computing and networking
Introduction to Algorithms
Application-specific protocol architectures for wireless networks
Application-specific protocol architectures for wireless networks
An Extended Localized Algorithm for Connected Dominating Set Formation in Ad Hoc Wireless Networks
IEEE Transactions on Parallel and Distributed Systems
Controllably Mobile Infrastructure for Low Energy Embedded Networks
IEEE Transactions on Mobile Computing
Energy-efficient coverage problems in wireless ad-hoc sensor networks
Computer Communications
Using predictable observer mobility for power efficient design of sensor networks
IPSN'03 Proceedings of the 2nd international conference on Information processing in sensor networks
Sensor networks with mobile agents
MILCOM'03 Proceedings of the 2003 IEEE conference on Military communications - Volume I
Improving network lifetime with mobile wireless sensor networks
Computer Communications
Towards an efficient positioning of mobile sinks in wireless sensor networks inside buildings
NTMS'09 Proceedings of the 3rd international conference on New technologies, mobility and security
AST/UCMA/ISA/ACN'10 Proceedings of the 2010 international conference on Advances in computer science and information technology
Optimizing data collection path in sensor networks with mobile elements
International Journal of Automation and Computing
A new clustering scheme for wireless sensor networks
Proceedings of the 8th International Conference on Advances in Mobile Computing and Multimedia
International Journal of Mobile Network Design and Innovation
Self healing wireless sensor network
ADCONS'11 Proceedings of the 2011 international conference on Advanced Computing, Networking and Security
Research on the energy hole problem based on unequal cluster-radius for wireless sensor networks
Computer Communications
Proceedings of the 14th annual conference on Genetic and evolutionary computation
Energy-efficient data reporting with sink mobility support in object tracking sensor networks
International Journal of Ad Hoc and Ubiquitous Computing
Equal energy dissipation in wireless image sensor network: A solution to energy-hole problem
Computers and Electrical Engineering
Utilising multiple mobile sinks to improve wireless sensor network lifetime
International Journal of Mobile Network Design and Innovation
Deployment strategy of WSN based on minimizing cost per unit area
Computer Communications
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A critical issue for data gathering in wireless sensor networks is the formation of energy holes near the sinks. Sensors near the sinks have to participate in relaying data on behalf of other sensors and thus will deplete their energy very quickly, resulting in network partitioning and limitation of the network lifetime. The solution that we propose in this paper is to use mobile sinks that change their location when the nearby sensors' energy becomes low. In this way the sensors located near sinks change over time. In deciding a new location, a sink searches for zones with richer sensor energy. First, we study the improvement in network lifetime when sinks move on a predetermined path, along the perimeter of a hexagonal tiling. Two cases are considered for data gathering when sinks stop in the hexagon's corners and when the sinks stop on multiple locations on the hexagon perimeter. This study shows an improvement of up to 4.86 times in network lifetime. Second, we design a distributed and localized algorithm used by the sinks to decide their next movement location such that the virtual backbone formed by the sinks remains interconnected at all times. Two extensions of the distributed algorithm, coverage requirement and limitation of the time-delivery requirement, are also addressed. Simulation results are presented to verify our approaches.