摘要
现场监测是无线传感网的主要应用领域之一,具有部署周期长、节点电池供电、感知数据实时上传等特点。针对此类数据采集应用的特点,提出了一种基于前导序列唤醒机制的媒体访问控制(MAC)层调度策略。通过对数据上传路径的节点唤醒时间的协调调度,减小了发送节点前导序列的长度,降低了节点的能耗和信道竞争的开销,提高了异常数据上传的实时性。对于多跳树形网络,本策略与现有的低功耗MAC协议进行了能耗分析对比。通过仿真和实验,验证了本策略的有效性,在保证数据实时性和投递率的同时,大大提高了网络寿命。
Field monitoring is one of the main applications of wireless sensor networks,which has the characteristics of long deployment period,battery powered nodes,real-time uploading sensing data and etc.Aiming at the characteristics of this type real-time data acquisition applications,in this paper a scheduling scheme for media access control(MAC)layer based on preamble sequence wake up mechanism is proposed.Through coordinating the scheduling of the node wake up time of the data uploading path,this scheme decreases the length of the preamble sequence of the sender,reduces the node energy consumption and channel contention overhead,and improves the real-time performance of abnormal data uploading.The energy consumption analysis and comparison for multi-hop tree network between the proposed scheme and the existing low-power MAC protocols were conducted.The simulation and experiment results verify the effectiveness of the proposed scheme,the proposed scheme greatly increases the network lifetime,while ensures the real time performance and delivery ratio of the data at the same time.
作者
张铮
曹守启
朱建平
陈佳品
Zhang Zheng;Cao Shouqi;Zhu Jianping;Chen Jiapin(College of Engineering Science and Technology,Shanghai Ocean University,Shanghai 201306,China;School of Electronics Information and Electrical Engineering,Shanghai Jiaotong University,Shanghai 200240,China)
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2019年第2期257-264,共8页
Chinese Journal of Scientific Instrument
基金
国家自然科学基金(61362017)
上海市科委"创新行动计划"(17050502000)
2017年上海市(临港)产学研合作项目(沪临地管委经[2017]56号)
教育部产学合作协同育人项目(201801271002)
上海海洋大学科技发展专项基金(A2-0203-17-100209)项目资助
关键词
无线传感网
低功耗
实时
调度
wireless sensor network(WSN)
low power
real time
scheduling
