网络视频业务流有效带宽的计算

The Caculation of the Effective Bandwidth of Video Traffic on the Network

随着网络业务种类的丰富及服务质量要求的提高,如何有效地分配有限的资源显得越来越重要。本文针对三种常见的业务流模型,分析了对视频业务流的带宽的计算问题,提出了带宽计算方法,并进行了仿真。仿真结果表明,在缓冲区大小固定的条件下,视频业务流的带宽计算采用对数正态-FARIMA模型可以获得较小溢出率。

With the abundance of traffic types and the increase of the requirement to QoS, how to allot the limited resource becomes more and more important. This article analyzes the calculation of the bandwidth of video traffic according to three traffic models and puts forward the method of calculation. The results of simulation demonstrate that under the condition of fixed buffer size, the calcu- lation based on lognormal-FARIMA model provides much less loss rate.