机会移动传感网中基于感知方向的数据收集  

Perceptive-direction-based Data Gathering in Opportunistic Mobile Sensor Networks

作　　者：梁泉[1,2] 贺文武[3] 张永晖[1] 

机构地区：[1]福建工程学院信息科学与工程学院,福州350108 [2]北京科技大学信息学院,北京100080 [3]福建工程学院数理系,福州350108

出　　处：《计算机科学》2015年第3期91-95,共5页Computer Science

基　　金：国家自然科学基金项目(61101139);福建省自然科学基金项目(2012J01244;2012J01247;2012J06015;2013J01214)资助

摘　　要：机会移动传感网中数据收集策略既要保证传输成功率、减小网络开销,也要尽量降低传感器的能量消耗,从而延长网络生命期。遵循简单实用的原则,提出了基于方向感知的数据收集策略(Data Gathering based on Perceptive Direction,DGPD)。当两个传感器相遇时,以距离它们最近的Sink节点为参照点,分别计算各自的感知方向。把感知方向作为一个重要参数来确定两个相遇传感器的消息转发路由,把消息转发给更有利于接近Sink节点的传感器,从而提高数据收集成功率,减少过多的消息转发。模拟实验结果表明,这种策略可以有效地完成数据收集,并获得较高的网络性能。In opportunistic mobile sensor networks,it is necessary to improve the success rate of data transmission and reduce the network costs.At the same time,to minimize the energy consumption of sensors is also needed so as to prolong the lifetime of the network.For simplicity and practicability,a strategy named data gathering based on perceptive direction（DGPD）was presented in the paper.According to the descriptions of the strategy,both two sensors meeting in the network will select the nearest Sink nodes as the reference and calculate their perceptive directions respectively.Subsequently,the routing of the message forwarding is determined in the light of the perceptive direction which is an important parameter,and one sensor sends the message to the other which better facilitates approaching the Sink node so as to improve the data gathering rate and also reduce excessive messages forwarding.The simulation results indicate that this strategy can effectively complete the data gathering and obtain a higher performance of the network.

关 键 词：机会移动传感网 数据收集 感知方向 消息转发 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]