【作者】 胡云斌； 夏玮玮； 宋铁成； 沈连丰；

【Author】 HU Yun-bin XIA Wei-wei SONG Tie-cheng SHEN Lian-feng (National Mobile Communications Research Laboratory,Southeast University,Nanj ing 210096)

【机构】 东南大学移动通信国家重点实验室；

【摘要】 VANET是一种将运动车辆作为通信节点的Ad hoc网络,其网络拓扑结构变化迅速导致传统的Ad hoc路由技术不适用。GPSR作为一种VANET的路由协议,仅根据节点位置来进行数据转发,而在高速移动过程中节点位置的很大变化导致转发节点选择错误,因此本文提出了一种改进的GPSR路由协议,在选择转发节点过程中考虑其运动速度和方向,进而提高转发节点选择的正确性来增加通信可靠性,并通过仿真验证其性能。更多还原

【Abstract】 VANET is one kind of Ad hoc networks where moving vehicles arc communication nodes.But duc to the rapid change of VANET topology,traditional Ad hoc routings technologies aren’t fit for VANET.GPSR routing protocol is a popular VANET routing protocol and it just forwards data according to nodes’ locations.However the fast change of high speed nodes’ locations will lead to invalid selection of forwarding nodes.An improved GPSR routing protocol is proposed in this paper, which takes vehicles’ velocity and moving direction factors into account when choosing forwarding nodes.The proposed routing protocol improves the communication’s reliability by increasing nodes selection validity.The simulation results demonstrate and evaluate the performance of the proposed protocol.更多还原