延迟容忍移动传感器网络高效广播数据传输机制  

An Efficient Broadcast Transmission Scheme for Delay Tolerant Mobile Sensor Networks

作　　者：杨奎武[1] 郭渊博[1] 郑康锋[2] 杨义先[2] 张冬梅[2] 

机构地区：[1]国家数字交换系统工程技术研究中心,郑州450002 [2]北京邮电大学信息安全中心,北京100876

出　　处：《北京邮电大学学报》2013年第1期91-95,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金项目(61101108;61070204);国家重大科技专项项目(2011ZX03002-005-01);河南省科技创新杰出青年计划项目(104100510025)

摘　　要：面向延迟容忍移动传感器网络,提出一种基于网络编码的高效广播数据传输机制(NEBT),基站传感器节点将原始广播数据分批进行编码,以此来降低节点间的数据相似度,降低广播时延;同时,传感器节点根据自身的广播增益,根据邻居节点相对自身运动趋势准确选择数据交互时机,降低通信开销.仿真结果表明,与常见的泛洪等机制相比,NEBT能进一步降低广播时延并大幅度降低通信开销.A netcoding-based efficient broadcast transmission scheme （NEBT） is proposed for delay tol- erant mobile sensor network. In NEBT, the original data packages are coded and batched transmitted by base station and sensor nodes. Because the packages are encoded, the correlation of data between sensor nodes is low, that is helpful in reducing the delay of broadcasting. Meanwhile, the sensor nodes can com- pute their own broadcasting gains and detect the moving trends to their neighbors. Based on moving trends, the sensor nodes can decide the time to transmit their packages and then decrease the cost of broadcasting. Simulation shows that NEBT scheme has lower broadcast delay and overhead than that of flood and others.

关 键 词：时延容忍移动传感器网络 网络编码 广播 随机移动模型 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]