Energy efficient multiple sink placement in wireless sensor networks

Sanghita Bhattacharjee, K. Agarwal
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引用次数: 6

Abstract

Minimizing energy consumption and maximizing network lifetime are two important challenges in battery operated Wireless Sensor Networks (WSNs). Sensor nodes sense the environment periodically and forward the collected data to a sink. In a single sink WSNs, nodes closer to the sink become overburdened for relaying excessive data. This may incur faster energy consumption by nodes and lead an energy hole around the sink. As a result, the network lifetime is shortened. Multiple sinks mitigate this problem, reduce energy consumption at nodes and prolong the network lifetime by distributing the traffic over multiple sinks. This paper focuses on multiple sink placement problem and proposes two local search technique based energy aware multiple sink placement strategies for WSNs. The lifetime oriented approach based sink placement takes into account the lifetime of nodes and places the sinks at suitable locations such that the average network lifetime is increased. While the energy oriented approach focuses on minimizing the average energy consumption of the network. We evaluate the performance of both the strategies via simulations and compare them with random sink placement strategy. Simulation results highlight that the lifetime oriented approach improves the lifetime significantly.
无线传感器网络中高能效的多sink布局
最小化能量消耗和最大化网络寿命是电池供电无线传感器网络(WSNs)面临的两个重要挑战。传感器节点周期性地感知环境,并将收集到的数据转发到接收器。在单接收器wsn中,靠近接收器的节点会因为中继过多的数据而负担过重。这可能会导致节点更快地消耗能量,并导致接收器周围出现能量洞。因此,缩短了网络的生命周期。多汇点缓解了这个问题,通过在多个汇点上分配流量,减少了节点的能量消耗,延长了网络的生命周期。针对无线传感器网络的多汇聚点放置问题,提出了两种基于能量感知的局部搜索技术的多汇聚点放置策略。基于面向生命周期的sink放置方法考虑了节点的生命周期,并将sink放置在合适的位置,从而增加了平均网络生命周期。而以能量为导向的方法侧重于最小化网络的平均能量消耗。我们通过模拟评估了这两种策略的性能,并将它们与随机sink放置策略进行了比较。仿真结果表明,面向寿命的方法显著提高了系统的寿命。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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