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ESWC: Efficient Scheduling for the Mobile Sink in Wireless Sensor Networks with Delay Constraint

Platform : DOT NET

IEEE Projects Years : 2012 - 13

ESWC: Efficient Scheduling for the Mobile
Sink in Wireless Sensor Networks with Delay
Constraint

Abstract—This paper exploits sink mobility to prolong the network lifetime in wireless sensor networks (WSNs) where the
information delay caused by moving the sink should be bounded. Due to the combinational complexity of this problem, most
previous proposals focus on heuristics and provable optimal algorithms remain unknown. In this paper, we build a unified
framework for analyzing this joint sink mobility, routing, delay, etc. We discuss the induced subproblems and present efficient
solutions for them. Then, we generalize these solutions and propose a polynomial-time optimal algorithm for the origin problem.
In simulations, we show the benefits of involving a mobile sink and the impact of network parameters (e.g. the number of sensors,
the delay bound, etc) on the network lifetime. Furthermore, we study the effects of different trajectories of the sink and provide
important insights for designing mobility schemes in real-world mobile WNNs.


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