无线传感网络中基于感测数据的自适应传输距离方案  

Sensing data-based adaptive transmission range in wireless sensor network

作　　者：孙海霞[1,2] 胡永[1,2] 雷萌[1,2] 

机构地区：[1]西藏民族大学信息工程学院,陕西咸阳712082 [2]西藏光信息处理与可视化技术重点实验室,陕西咸阳712082

出　　处：《中国科技论文》2016年第2期125-129,共5页China Sciencepaper

基　　金：国家民委基金项目(13074)

摘　　要：提高能量利用率和缩短传输时延一直是无线传感网络WSNs(wireless sensor networks)研究热点。为此,提出了基于感测数据的自适应传输距离SDATR(Sensing Data-based Adaptive Transmission Range)方案。在紧急环境下,增加传输距离,减少跳数,进而缩短时延;在正常环境下,降低传输距离,减少能量消耗。SDATR方案依据环境自动调整传输距离。若紧急环境,感测的数据必须存在异常变化,反之亦然。通过检测感测数据的变化,能够反映环境的异常情况。仿真结果表明,所提出SDATR方案能够有效地依据环境调整传输距离,缩短紧急环境下的数据传输时延,并降低正常环境中的能量消耗。How to improve the energy efficient and reduce the transmission delay is a hot issue in wireless sensor networks(WSNs).A sensing data-based adaptive transmission range(SDATR)scheme is proposed.In the urgent situation,the transmission range is increased and the number of hops is reduced so that latency is reduced.In the normal situation,the transmission range is decreased to reduce the battery consumption of sensor nodes.SDATR scheme adjusts the transmission range of sensor nodes accordingly according to the situation evaluation.When the situation is an urgent,the sensing data changes rapidly,vice versa.Simulation results show that SDATR could automatically adjust the transmission range against the environmental changes,the delay is reduced in urgent situation and energy consumption is reduced in normal situation.

关 键 词：无线传感网络 能量 时延 感测数据 传输距离 

分 类 号：TN929.5[电子电信—通信与信息系统] TP212.9[电子电信—信息与通信工程]