无线传感网中面向能量收集的数据重传协议  

DATA RETRANSMISSION PROTOCOL FOR ENERGY COLLECTION IN WIRELESS SENSOR NETWORKS

作　　者：赵璇[1] 李长青[1] 安葳鹏[1] 

机构地区：[1]河南理工大学计算机科学与技术学院,河南焦作454000

出　　处：《计算机应用与软件》2015年第10期138-143,共6页Computer Applications and Software

基　　金：国家自然科学基金项目(51174263)

摘　　要：能量收集可以为下一代无线传感器网络提供能源,是目前无线传感器网络的研究热点。然而由于能量收集设备无法提供稳定的电源,导致基于能量收集的传感器节点不能与其他节点保持通信。节点无法知道相邻节点是否有充足的能量以接收它所传递的数据包。在数据报中继传输过程中,每进行一次中继传输,便会增加数据包的丢失概率。针对该问题,根据接收节点计算而得的接收概率和活跃间隔,确定传输一个报文所需次数,提出两种基于能量收集的无线传感器网络数据采集协议:基于概率的重传协议和基于冲突避免的重传协议。仿真实验结果表明,相比于已有的数据采集协议而言,该方案的数据送达率更高,延时更低。Energy harvesting,as a candidate for powering the next generation wireless sensor networks,is a research focus in WSN currently.However,sensor nodes powered by energy collecting devices cannot constantly communicate with other nodes because the energy harvesting devices cannot provide a stable supply power,a node cannot know whether its neighbouring nodes have enough energy to receive a data packet that it has transmitted.During the process of packet relaying transmission,each additional relaying transmission will increase the probability of losing the packet.To solve this problem,we derive the number of times to retransmit a packet based on the reception probability and the active intervals computed by the receivers themselves,and propose two data collection protocols for energy harvesting wireless sensor networks called probabilistic retransmission protocol and retransmission protocol with collision avoidance.Simulation results show that compared with existing data collection protocols,the proposed method can achieve higher data delivery ratio and the lower delay.

关 键 词：无线传感器网络 能量收集 概率 冲突避免 重传 送达率 延时 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]