摘要
提出了一种利用具有传感器通信接口的移动终端设备(如手机、手提电脑、个人数字助理等)进行辅助数据获取的传感器网络数据收集协议。网络中固定汇聚节点与移动终端共存,全部传感器节点都维护到固定汇聚节点的路由,移动终端进入网络后定期向其附近小范围内的传感器节点扩散自己的存在信息,传感器节点向距自己跳数最小的汇聚节点或移动终端发送或转发数据包,移动终端和传感器节点之间通过应答和重传的机制来保证数据的可靠传输。仿真研究证明,该协议在延长网络生存时间的同时可以获得较高的数据传输成功率和较短的数据传输延迟,而且可靠性、灵活性、可扩展性较强。
A data collection protocol tor wireless sensor networks which utilizes mobile terminals（mobile phones,laptops,PDAs etc.） is proposed.The protocol works in network scenarios where static sinks and mobile terminals coexist.All the sensor nodes maintain routing information of the static, sinks.Mobile terminals broadcast location update to a subset of adjacent sensor nodes. Sensor nodes send or forward data packets to the nearest sink or mobile terminal in hop counts.The success rate of data transmission is guaranteed by acknowledge and retransmit mechanism.Simulation shows that by using this protocol great network lifetime improvement achieves with the increase of the number of the mobile terminals.Meanwhile,thc capacity of the entire network improves while the data transmission delay remains low.
出处
《计算机工程与应用》
CSCD
北大核心
2008年第18期1-5,共5页
Computer Engineering and Applications
基金
国家863目标导向类项目(the National High Technology Development 863 Program of China under Grant No.2007AA01Z2A8)
中科院知识创新工程重要方向项目(the Knowledge Innovation Program of the Chinese Academy of Sciences under Grant No.KGCX2-YW-110-2)
关键词
无线传感器网络
移动终端
数据收集
wireless sensor networks
mobile terminal
data collection
