Information assurance in sensor networks
WSNA '03 Proceedings of the 2nd ACM international conference on Wireless sensor networks and applications
ReInForM: Reliable Information Forwarding Using Multiple Paths in Sensor Networks
LCN '03 Proceedings of the 28th Annual IEEE International Conference on Local Computer Networks
Robust distributed network localization with noisy range measurements
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
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
Efficient Hop ID based Routing for Sparse Ad Hoc Networks
ICNP '05 Proceedings of the 13TH IEEE International Conference on Network Protocols
IEEE Transactions on Mobile Computing
Journal of Parallel and Distributed Computing - Special issue: Algorithms for wireless and ad-hoc networks
HCDD: hierarchical cluster-based data dissemination in wireless sensor networks with mobile sink
Proceedings of the 2006 international conference on Wireless communications and mobile computing
Controllably Mobile Infrastructure for Low Energy Embedded Networks
IEEE Transactions on Mobile Computing
Mobile data collector strategy for delay-sensitive applications over wireless sensor networks
Computer Communications
Using sink mobility to increase wireless sensor networks lifetime
WOWMOM '08 Proceedings of the 2008 International Symposium on a World of Wireless, Mobile and Multimedia Networks
HDA: A hierarchical data aggregation scheme for 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
MobiRoute: routing towards a mobile sink for improving lifetime in sensor networks
DCOSS'06 Proceedings of the Second IEEE international conference on Distributed Computing in Sensor Systems
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In this paper, we focus on maximizing network lifetime of a Wireless Sensor Network (WSN) using mobile Data Collectors (DCs) without compromising on the reliability requirements. We consider a heterogeneous WSN which consists of a large number of sensor nodes, a few DCs, and a static Base Station (BS). The sensor nodes are static and are deployed uniformly in the terrain. The DCs have locomotion capabilities and their movement can be controlled. Each sensor node periodically sends sensed event packets to its nearest DC. The DCs aggregate the event packets received from the sensor nodes and send these aggregate event packets to the static BS. We address the following problem: the DCs should send the aggregate event packets to the BS with a given reliability while avoiding the hotspot regions such that the network lifetime is improved. Reliability is achieved by sending each aggregate event packet via multiple paths to the BS. The network lifetime is maximized by moving the DCs in such a way that the forwarding load is distributed among the sensor nodes. We propose both centralized and distributed approaches for finding a movement strategy of the DCs. We show via simulations that the proposed approaches achieve the required reliability and also maximize the network lifetime compared to the existing approaches.