移动环境下扩展的基于策略的网管(PBNM)模型的动态资源分配

针对传统静态策略中条件和动作都是确定的,不能很好地适应网络状态变化的问题,提出了一种基于扩展PBNM模型的移动环境下动态资源分配方案,增加了在运行期根据网络状态对策略进行更新的组件,并给出了动态资源分配的方法。通过实验,采用扩展PBNM模型及动态的策略形式对网络资源进行分配,降低了实时新业务的阻塞率和实时切换业务的掉线率,提高了网络资源的利用率,相对于传统资源分配方法更灵活。

Dynamic resource allocation of extended policy based network management(PBNM) model in mobile environment

The conditions and actions of traditional static policies are constant, which leads to less preferable adaptability to the change of network state. In this paper, a dynamic resource allocation scheme based on extended PBNM model in mobile environment is proposed. This scheme applies the policy with dynamic format and improves the conventional PBNM model by adding the modules that can update policies during runtime according to network state. The method for dynamic resource allocation is described. Experiment and analysis show that this scheme decrease the probabilities of handoff call dropping and new call blocking, while, increases the utilization rate of network resources, which is more flexible compared with traditional resource allocation method.