摘要
针对无线传感器网络的低能耗要求以及不同的应用需求,提出一种保障时延、能量高效的路由协议(DGEER).节点沿着最短路径发送时延敏感数据到目的节点,从而使其时延尽可能小;非时延敏感数据根据邻居节点的剩余能量、数据队列占空比和梯度关系来选择下一跳节点,能够在网络发生堵塞时避开网络热点以缓解拥塞.仿真结果表明:与传统的PRTR(potential based real-time routing)协议相比,DGEER协议能够在减小时延敏感数据网络延迟的前提下均衡网络能耗,延长网络生存周期.
A delay-guaranteed energy-efficient routing（DGEER） protocol is proposed to meet the requirements of low power consumption for various sensor network applications.The nodes transmit the delay-sensitive data along the shortest path to minimize their delay,and the other data are sent to the next hop,which is selected according to the local neighbor information,such as the left energy,the proportion of the length of data to total length of the queue,and the depth,thus the congestion at hot spots is alleviated.Simulation shows that DGEER enables to reduce the average latency of delay-sensitive data,to balance the energy consumption,and to prolong network lifetime.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2012年第6期48-52,91,共6页
Journal of Xi'an Jiaotong University
基金
国家重点基础研究发展计划资助项目(2011CB302906)
江苏省省级现代服务业(软件产业)发展专项引导资金资助项目
关键词
无线传感器网络
保障时延
能量高效
路由协议
wireless sensor network
delay-guaranteed
energy-efficient
routing protocol
