大规模通信网络中虚通路带宽查表分配算法

现代通信网正朝着支持多种类别的多媒体业务的方向发展,在这种情况下,如何保证网络服务质量,为用户提供更好的服务是当前网络优化中急需解决的重要问题。基于网络的呼叫阻塞率(CBP)对大规模网络中的虚通路进行动态带宽分配管理是一种有效的网络优化方法。但是,如何在指定CBP和业务流负荷下求得带宽值是目前虚通路带宽分配中的难点。提出了一种全新的带宽查表分配算法,该算法通过快速建立指定业务负荷下带宽和CBP之间的关系表格来精确地查找所需分配的带宽值。仿真结果表明,与现有带宽分配算法相比,本文的带宽查表分配算法精度高、计算速度快。

A Virtual Path Bandwidth Allocation Algorithm through Look-up-table in Large-scale Telecom Networks

Modern communication network aims to support various multimedia services, so the problem how to guarantee the Quality of Service (QoS) for all customers needs to be solved urgently. An effective network optimization method is to dynamically allocate bandwidth for virtual path channel based on the CBP (Call Blocking Probability). But it is difficult to directly get the bandwidth under the required CBP and specified traffic load. A novel bandwidth allocation algorithm through look-up-table is proposed. The algorithm gets the bandwidth through looking the table of bandwidth vs. CBP of specified traffic load that has been established quickly in advanced. Numerical results show that our look table algorithm has reliable accuracy and high speed advantage.