Mobile Data Gathering with Time-Constraints in Wireless Sensor Networks
نویسندگان
چکیده
Recent research shows that significant energy can be saved by using mobile elements (ME)for data gathering in wireless sensor networks. The major drawback of this approach is the low movement speed of MEs which limits them to gather data from all sensor nodes with time constraints. This paper presents a data gathering algorithm called Minimum Mobile Elements Routing with Deadline (M2ERD). The goal of M2ERD is to find a set of minimum cost trajectories whilst satisfying deadline constraint. A genetic algorithm is presented to determine the feasible trajectories. The effectiveness and efficiency of M2ERD are verified through extensive simulations.The presented results show that M2ERD not only can provide substantial energy saving compared with traditional data gathering algorithm, but also can reduce the cost of mobile elements compared with ME-based data gathering algorithm.
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