为了提高链路的稳定性,增加路径可用时间,提出一种应用于移动Ad hoc网络的基于链路可用时间的动态源路由协议(LARP)。该协议以路径可用时间作为路径评价的参数,优先选择具有最大路径可用时间的路径进行数据包传递。路径可用时间反映了当前节点移动对路径稳定性的影响,其数值取决于路径中的最小链路可用时间。仿真结果表明该协议相对于动态源路由协议(DSR),提高了路径稳定性,减少了路由发现次数,有效提高了吞吐量等网络性能。 In order to improve the stability of the link and increase the available time of the path, a dynamic source routing protocol (LARP) based on link availability time is proposed for mobile Ad hoc networks. The protocol takes the path available time as the parameter of the path evaluation, and preferentially selects the path with the maximum path available time for data packet transfer. The path availability time reflects the impact of the current node movement on the path stability, the value of which depends on the minimum link availability time in the path. Simulation results show that compared with DSR, this protocol improves the path stability, reduces the number of route discovery and improves the network performance such as throughput.