Abstract

该文基于ITU-T所制定的传送多协议标记交换标准,对客户端承载基于电路交换类型的业务进行了深入研究,比较了不同长度的电路业务分组对该业务延时和抖动的影响,并提出了一种动态改变电路业务封装包长的方案。该方案根据业务接收端数据的时延和方差统计情况,来计算一定范围内合适的电路业务净荷长度并反馈给源端的业务适配模块进行调整。为分析该方案的有效性,利用OPNET仿真软件搭建平台进行仿真。结果表明,该方案与固定封装包长方案相比在业务抖动特性和传输效率上具有明显的优势,能很好地适应电路业务的承载要求。

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