摘要
在城市环境下的VANET应用场景中,传统的基于地理位置信息的路由算法如GPSR等存在一些问题,本文在此基础上提出一个改进的路由协议,通过对车辆节点网络传输负荷以及所在路段方向等状态信息进行检测,并将此作为路由转发选择依据.新协议选择传输延时小并且路由健壮性较强的路径进行数据转发,有效地提高了城市环境下的路由传递效率.NS2仿真结果表明新协议具有较好的性能.
To tackle the problems of applying GPSR routing protocol in urban scenarios, an improved protocol is proposed. The protocol detects the status information of vehicle node network transmission load and traveling direction, and these factors will be considered in new routing forwarding. The new protocol chooses the path of small transmission delay and strong robustness to forward data, what effectively improves the route transmission efficiency in the urban environment. NS2 simulation results show that the improved routing protocol performs well.
出处
《计算机系统应用》
2013年第9期144-148,共5页
Computer Systems & Applications
基金
2012年度浙江省大学生科技创新活动计划(2012R403069)
关键词
车载自组织网络
路由协议
地理位置
路网模型
网络传输负荷
vehicular ad hoc network
routing protocol
geographic location
road network
transmission load
