Network lifetime augmentation by EASR method in wireless sensor networks

S. Anitha, N. Janakiraman
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引用次数: 2

Abstract

A wireless sensor network (WSN) with spatially distributed autonomous sensors, to monitor physical and other environmental conditions such as temperature, sound, pressure, etc. and to cooperatively pass their data through the network to a main location. In wireless sensor networks, most important problem is to extend the lifetime of the networks as long as possible. Network lifetime can be increased by conserving the limited power resources of sensors while accomplishment of the sensing and sensed data reporting its tasks. In WSN, each sensor node delivers the sensed data to sink by multi-hopping technique. Generally, sensor nodes nearer to the sink will consume more battery power than further nodes. So these nodes will drain out their battery power rapidly and reduce the network lifetime. In this paper, we propose a method called Energy - Aware Sink Relocation (EASR) for mobile sinks in WSNs which is an efficient method to increase the network lifetime. This mechanism uses information of both transmission range of sensor nodes and scheme for sink relocation. Thereby, we included numerical methods to extend network lifetime and further the results are plotted in NS2 platform.
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无线传感器网络中EASR方法的网络寿命增强
一种无线传感器网络(WSN),具有空间分布的自主传感器,用于监测物理和其他环境条件,如温度、声音、压力等,并通过网络将其数据协同传递到主要位置。在无线传感器网络中,最重要的问题是尽可能延长网络的使用寿命。在完成传感和被传感数据报告任务的同时,节约传感器有限的电力资源可以延长网络寿命。在无线传感器网络中,每个传感器节点通过多跳技术将感知到的数据发送到sink。一般来说,靠近接收器的传感器节点会比更远的节点消耗更多的电池电量。因此,这些节点将迅速耗尽电池电量,缩短网络寿命。本文提出了一种针对无线传感器网络中移动Sink的能量感知Sink重定位方法(EASR),这是一种提高网络生存期的有效方法。该机制既利用了传感器节点的传输范围信息,又利用了sink重定位方案信息。因此,我们采用数值方法来延长网络寿命,并进一步在NS2平台上绘制结果。
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