嵌入式HFC透明网桥实现技术研究  

Implementation Research of Embedded Transparent Bridge in HFC

作　　者：张晓彤[1] 郭涛涛[1] 王沁[1] 

机构地区：[1]北京科技大学信息工程学院,北京100083

出　　处：《小型微型计算机系统》2006年第7期1153-1157,共5页Journal of Chinese Computer Systems

基　　金：北京市科技重大项目"交互式数字电视信道传输核心技术开发"京科技发[2002]188号资助.

摘　　要：在不同物理结构的网络之间互联,实现各种综合业务是网络和通信应用面对的重要课题.本文设计了一种可在HFC接入网的头端与用户端之间实现双向数字业务的嵌入式透明网桥,该桥基于DOCSIS协议的MAC层设计,有效实现通信的MAC地址动态获取、MAC帧过滤以及DOCSIS MAC层数据与以太网MAC层数据的双向转发等功能.本设计已经成功用于自主开发的物理层和MAC层芯片组成的HDTV双向系统平台上,通过实际网络环境验证,本设计在HDTV双向点播、VOIP、Internet网通信等应用上表现出较高的网络适应性、稳定性和传输质量.To implement various services founded on the interconneetion of different network is a significant research tor net- work and communication applications. The paper describes the design and implementation of a transparent bridge for embedded system which implements bidirectional digital service between the HFC head-end and the customer locations. The bridge is designed on the MAC layer based on DOCSIS, and supports MAC address learning, MAC frame filter and data flow transferring. The design has been used in the self-studied HDTV bidirectional system,and reveals high adaptive capacity, robust perfor- mance and transport quality on VOD, VOIP as well as Internet communication etc.

关 键 词：HFC DOCSIS MAC 透明网桥 嵌入式 

分 类 号：TP393.03[自动化与计算机技术—计算机应用技术]