摘要
针对车载自组织网络(VANETs)中道路拓扑的限制和车辆的高速移动导致VANETs路由协议面临频繁的连接中断问题而效率低下的问题,综合考虑车辆行驶轨迹和该轨迹上的车流分布信息,动态地选择转发机会最大、预期时延最小的节点作为下一跳,提出了基于道路连接性的地理机会路由协议(CGOP)。仿真结果显示,相比GeOpps和GPSR,提出的CGOP具有更低的平均端到端时延,更高的分组投递率,在连接频繁中断的VANETs中具有良好的鲁棒性。
The road topology restrictions and rapidly moving vehicular cause intermittent connectivity in VANET.To this point,this paper took advantage of the navigation path and connectivity on the path,and dynamically selected the vehicle with the minimum expected delay metric to delivery data.Based on the metric,it proposed CGOP（connectivity based geographical opportunistic routing protocol）.The simulation results show that CGOP outperforms GeOpps and GPSR in terms of average data delivery delay and packet delivery ratio,and superior robustness to intermittent connectivity conditions in VANETs.
出处
《计算机应用研究》
CSCD
北大核心
2013年第4期1116-1119,共4页
Application Research of Computers
基金
国家自然科学基金资助项目(61171111)
重庆市自然科学基金资助项目(CSTC2011jjA40046)
重庆市教委科学技术研究资助项目(KJ120524)
关键词
机会路由
连接性
车辆间通信
车载自组织网络
opportunistic routing
connectivity
vehicular communication
VANET（vehicular Ad hoc networks）
