通过DOCSIS HFC网络上行传输实时VBR视频业务  

A Novel Method to Transmit Real-Time VBR Traffic over the DOCSIS HFC Network

作　　者：刘政林[1] 邹雪城[1] 

机构地区：[1]华中科技大学电子科学与技术系,湖北武汉430074

出　　处：《计算机工程与科学》2004年第7期8-11,30,共5页Computer Engineering & Science

摘　　要：为了通过DOCSISHFC网络上行传输实时VBR业务 ,本文定义了增强的UGS服务。此服务是基于DOCSIS 1 .1定义的piggyback(捎带请求 )功能和UGS服务。使用piggyback请求额外的带宽 ,利用UGS保证服务质量 。In order to support real-time variable bit rate traffic over the HFC network a service named Enhanced Unsolicited Grant Service, which is based on the piggyback request function, is introduced in this article, and the Unsolicited Grant Service is also defined. This service uses piggyback to request additional bandwidth and uses the Unsolicited Grant Service to guarantee the quality of services based on DOCSIS V1.1. This service can alleviate the effect caused by packet loss and exploit bandwidth efficiently.

关 键 词：有线电视网络 DOCSIS协议 HFC网络 VBR 视频业务 

分 类 号：TN943.6[电子电信—信号与信息处理]