摘要
为显著提高路由决策性能,在信息熵的基础上提出了用熵值定量描述链路稳定性的算法;同时综合考虑用户带宽的个性化需求,在多路径路由协议(AOMDV)的基础上设计出一种适用于城市车载Ad hoc网络的QoS路由协议BLS-AOMDV。理论分析论证了BLS-AOMDV协议的有效性及可行性。基于NS2的仿真结果表明,新协议在丢包率、时延、路由开销上都要优于传统的AOMDV多路径路由协议,因此更加适合于城市VANETs应用范畴。
Considering the specific characteristics of high mobility and uncertain stability in vehicular Ad hoc networks（VANETs）,this paper proposed a novel QoS multi-path routing protocol called BLS-AOMDV（bandwidth and link stability-AOMDV） basing on Ad hoc on-demand multipath distance vector（AOMDV）to improve the performance of routing decisions.Specifically,it adopted information entropy method to quantificationally evaluate the link stability from an algorithmic perspective.Moreover,analyzed the efficiency and feasibility of BLS-AOMDV protocol theoretically.The simulation results in NS2 prove that the performances of BLS-AOMDV are better than AOMDV in packet drop ratio,delay and routing overhead,consequently demonstrating the enhancement of path-routing ability with distinct superiority.
出处
《计算机应用研究》
CSCD
北大核心
2012年第4期1473-1476,共4页
Application Research of Computers
基金
国家自然科学基金资助项目(61070182)
