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中文摘要: 无线传感器网络中，传感器节点间不平衡的能耗会产生能量空洞问题，而汇聚节点的重定位可以有效地平衡能耗，提高网络寿命。与单汇聚节点相比多汇聚节点具有减小多跳传输能耗，提高数据传输效率等优势，因此本论文提出了一种基于阿基米德螺线的多汇聚节点重定位(ATSR)策略，该策略利用阿基米德螺线具有恒定的线速度和角速度，使多汇聚节点同时沿着对称的两条阿基米德螺线运动的方式来提升网络生存周期，并针对该策略因数据收集间隔导致的额外能耗问题，提出了性能更好的策略（IATSR）。实验结果表明，与其它汇聚节点重定位算法相比，本策略具有更好的性能。
Abstract:In wireless sensor networks, unbalanced energy consumption among sensor nodes will lead to energy hole. Sink relocation can effectively balance energy consumption, and thus prolong the network lifetime. Compared with the single sink, multiple sinks have the advantages of reducing data transmission delay and improving data transmission efficiency. In the paper, we propose an Archimedean spiral based multi-Sink Relocation strategy (ATSR), ATSR takes advantage of Archimedean spiral having constant linear velocity and angular velocity, and then we adopt the way that sinks move along two symmetric spirals of Archimedes to enhance the network lifetime. To improve ATSR further, we propose a better strategy (IATSR). Experimental results show our proposed ATSR and IATSR have better performance compared with other sink relocation algorithms.
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