摘要
机会网络不需要源节点和目标节点之间存在完整链路,利用节点移动带来的相遇机会实现通信,是目前的研究热点之一。设计了一种基于机会网络的信息采集与消息传输系统BlueChat。一方面,系统采集节点相遇信息,构建路由信息表,并且可以作为机会网络中节点移动轨迹建模、社团划分、消息转发策略研究、网络QOS研究等的原始数据;另一方面,系统可以采用不同的消息队列管理策略,通过节点的移动,以"存储-携带-转发"的路由模式实现节点间消息的传输。通过对系统进行连续3个月,50个以上节点,长时间、大规模的测试,并分析采集到的数据,得出消息交付率在95%以上,满足特殊情况下的节点通信需求。
An opportunistic network is a type of challenged networks,which has not any stable end-to-end delivery path between source nodes and destination nodes, and the messages are transmitted by the ＂store-carry-and-forward＂paradigm when message-carrying nodes encounter other nodes until they reach the destination nodes. In this paper, we design a information collection and message transmission system-BlueChat-for opportunistic networks by Bluetooth protocol. On one hand, it collects information of node contact for building routing table, mobility model, community detection, routing protocol and QoS strategy research. On the other hand, it transmits messages through different message queue management strategy for special circumstances demand. Performance of this system is tested last for three months and more than fifty nodes involved. Ninety five percent of the messages is delivered and it could meet the message trans- mission needs of opportunistic networks.
出处
《计算机科学》
CSCD
北大核心
2013年第11A期41-45,共5页
Computer Science
基金
国家自然科学基金(61162006)
教育部"春晖计划"(Z2009-1-01011)
内蒙古自治区高等学校科学技术研究基金(NJZY11017)资助
关键词
机会网络
信息采集
消息传输
存储-携带-转发
消息队列
Opportunistic network, Information collection, Message transmission, Store-carry-and-forward, Queue management
