信息安全与技术
信息安全與技術
신식안전여기술
INFORMATION SECURITY AND TECHNOLOGY
2012年
9期
76-79
,共4页
车载网%链路稳定度%路由
車載網%鏈路穩定度%路由
차재망%련로은정도%로유
VANET%link stability%routing
车载自组织网络VANET（vehicular ad hoc network）由于车辆高速移动性、分布不均匀、运动行为受交通环境限制等因素的影响，使得VANET具有网络拓扑结构变化频繁、传输信号受干扰大、网络易于断裂等固有特性。路由选择是VANET的重要组成部分。如何选择下一跳节点是实现路由方法的关键，链路稳定度是衡量VANET性能的重要因素。本文通过计算预期路径的链路稳定度来选择下一跳节点，提出一种基于链路稳定度的路由方法。实验结果表明与传统的AODV相比，本文提出的方法在端到端延时，数据包的传递率等方面有较大的提高。
車載自組織網絡VANET（vehicular ad hoc network）由于車輛高速移動性、分佈不均勻、運動行為受交通環境限製等因素的影響，使得VANET具有網絡拓撲結構變化頻繁、傳輸信號受榦擾大、網絡易于斷裂等固有特性。路由選擇是VANET的重要組成部分。如何選擇下一跳節點是實現路由方法的關鍵，鏈路穩定度是衡量VANET性能的重要因素。本文通過計算預期路徑的鏈路穩定度來選擇下一跳節點，提齣一種基于鏈路穩定度的路由方法。實驗結果錶明與傳統的AODV相比，本文提齣的方法在耑到耑延時，數據包的傳遞率等方麵有較大的提高。
차재자조직망락VANET（vehicular ad hoc network）유우차량고속이동성、분포불균균、운동행위수교통배경한제등인소적영향，사득VANET구유망락탁복결구변화빈번、전수신호수간우대、망락역우단렬등고유특성。로유선택시VANET적중요조성부분。여하선택하일도절점시실현로유방법적관건，련로은정도시형량VANET성능적중요인소。본문통과계산예기로경적련로은정도래선택하일도절점，제출일충기우련로은정도적로유방법。실험결과표명여전통적AODV상비，본문제출적방법재단도단연시，수거포적전체솔등방면유교대적제고。
VANET (vehicular ad hoc network) has some specific attributes such as dynamic topology, weak signal transmission and the easily breakable link, which is caused by the constrained of road, the distribution and high mobility of nodes. Routing is one of the fundamental components for the success of VANET applications. The key factor of routing is how to select the next node to relay packets. Link stability is an important factor that evaluates the performance of routing. This paper proposes a link-stability routing based on calculating the stability of expected link to select the next relay, which was compared with traditional protocol such as AODV. Simulation results show that significant performance improvement has been achieved in terms of packet delivery ratio, end-to-end delay.
