关键词: 车载通信网； 车载自组织网络, DSR协议； 移动代理； 群首

Abstract:

In view of purely adding mobile agent into demand routing protocol just taking up more bandwidth, increasing the cost of the system, and making the packet delivery ratio declined, the authors proposed a routing strategy with mobile agent based on hierarchical DSR (NCMDSR), and took computer simulation with the designed algorithm. The proposed NCMDSR protocol was compared with the multi agent based adaptive DSR protocol (MADSR) and DSR protocol respectively. Simulation results show that NCMDSR protocol could reduce endtoend transmission delay significantly, further cut down the number of routing requests, improving the submission rate to a certain extent. So this improved protocol is more suitable for realtime communication vehicular communication networks.

Key words: vehicle communications network, vehicular ad hoc networks, dynamic source routing protocol, mobile agents, cluster head