提出了一个基于EPON的双向数字CATV网络的QoS构架实现机制,使用基于效用的动态QoS分级组播技术和H.264压缩编码技术来实现VOD的动态带宽分配,保证VOD业务带宽的需求,实现网络资源的高效使用。仿真实验结果显示它比ADSL2+和DOCSIS 3.0具有更高的性能价格比。
This paper introduced a QoS implement mechanism of the digital hi-direction CATV based on EPON. Through the utility-based QoS muhi-level nulticast and H. 264 compression encoding/decoding mechanism, EPON met the VOD bandwidth requirement and lowers the loss ratio of package. The result of simulation experiment shows that it can provide more performance with less cost than ADSI2 + and DOCSIS3.0.