研究目的
To develop an efficient relocation technique that simultaneously maximizes the network lifetime in a mobile sensor network used to monitor a moving target in a field with obstacles.
研究成果
The proposed relocation technique effectively maximizes the network lifetime by determining near-optimal sensor locations and energy-efficient routes for information transfer. Simulation results confirm the technique's superiority over existing methods in terms of network lifetime and balanced energy consumption across sensors.
研究不足
The analytical solution of the problem is complex in general, and the proposed algorithm provides a near-optimal solution at each time step independently. The performance over multiple time steps for a given target movement model is not addressed.
1：Experimental Design and Method Selection:
The methodology involves constructing a graph with edges weighted based on the remaining energy of each sensor to address the lifetime maximization problem by solving a sequence of shortest path problems.
2：Sample Selection and Data Sources:
The study considers a group of n mobile sensors, a moving target, and a fixed access point in a 2-D field with obstacles.
3：List of Experimental Equipment and Materials:
Mobile sensors with specified communication and sensing radii, and a field represented by a 2-D plane.
4：Experimental Procedures and Operational Workflow:
The field is partitioned into a grid, and a digraph is constructed with grid nodes as vertices. Weights are assigned to edges based on a proposed strategy, and the shortest path connecting the target to the destination node is found.
5：Data Analysis Methods:
The effectiveness of the proposed strategy is demonstrated through simulation results comparing network lifetime under different algorithms.
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