基于OPNET的通信网络仿真优化方法

Methods for Simulation Optimization of a Communication Network Based on OPNET

为了有效解决仿真的精度和速度之间存在的矛盾,本文通过对通信网络进行抽象和浓缩,将其映射到OPNET仿真平台,构建了一个典型的层次型通信网络仿真模型。在OPNET精确模式和背景流模式建模方法的基础上,把多种建模技术进行组合仿真,并通过对仿真实际运行时间及所收集的统计量的分析比较,找到改善仿真精度和速度矛盾的有效方法—混合建模。因而实现了可扩展的三层网络结构,实现了实际网络向OPNET仿真平台的映射,实现了几种业务建模方法的综合,实现了改善仿真精度和速度矛盾的混合建模。

In order to overcome effectively the contradiction between precision and speed in simulation, this paper constructs a typical layer-simulation model of communication network by abstracting and condensing the communication network of a system and mapping it to OPNET simulation console. On the basis of the explicit and background modeling methods, it combines several modeling technologies and runs the simulation. By comparing the actual time simulation runs with the statistics gathered, it finds the effective hybrid modeling method. This paper realizes the design of an extensible three-layer network structure and the mapping of a real network to OPNET and it also realizes the hybrid modeling method which can overcome the contradiction between the precision and speed in simulation.