间歇性连接移动网络中节点移动范围自感知路由

节点的稀疏分布、频繁断开或周期性的移动会导致移动网络中节点间歇性连接,源节点和目的节点之间不存在端到端的瞬时路径,传统的路由协议不能适应这种情况.在网络状态未知的情况下,提出了基于节点运动范围自感知的路由协议MSAR(Mobility Scope Aware Routing).不需要地理位置定位等硬件的支持,利用节点历史相遇信息来分析节点的运动范围,作为消息复制转发的依据.仿真结果表明, MSAR路由协议能够保证较高的消息交付比率和相对较低的延时,能够大量减少消息在网络中的分发数量,减小网络的开销.同时,协议还具有实现比较简单,控制开销比较小的特点.

Mobility Scope Aware Routing in Intermittently Connected Mobile Networks

Mobile networks are intermittently connected due to sparse distributed nodes, frequently disruption or periodical mobility. An end-to-end instantaneous path does not exist between source and destination nodes. Traditional routing protocol does not work in this situation. A routing protocol based on mobility scope aware (MSAR) is proposed with uncertainty of network status. It uses encounter histories as utility to analyze node mobility scope, and decide whether the node are chose to forward messages. It does not need the support of geographical position location devices. Simulation results indicate that MSAR may guarantee higher message delivery ratio and relative lower delays. It can greatly decrease the numbers of message copies distributed in the network and overhead ratio. It can be easily implemented with low overhead of control.