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链路可用带宽的准确估计对于提高城市车载自组织网络性能具有重要的影响.为了提高城市车载自组织网络链路可用带宽估计的精确度,提出一种带宽估计算法VABE(Vehicular available bandwidth estimation).该算法通过分析信号受到的干扰,对信道容量进行精确估计,同时考虑节点移动性对链路带宽估计的影响,从而准确估计城市车载自组织网络的可用带宽.最后通过NS2进行仿真,表明该算法精确度更高,适合作为城市车载自组织网络中业务分配、路由选择的依据.
Accurate estimation of the link available bandwidth has an important impact on improving the performance of urban vehicular ad hoc networks.In order to improve the accuracy of available bandwidth estimation of urban vehicular ad hoc network links, a bandwidth estimation algorithm VABE (Vehicular available bandwidth estimation) is proposed. The algorithm estimates the channel capacity accurately by analyzing the signal interference, and considers the effect of node mobility on link bandwidth estimation to accurately estimate the available bandwidth of urban vehicular ad hoc network.Finally, NS2 simulation shows that the algorithm Higher accuracy, suitable as a city car self-organizing network business distribution, routing basis.