| 摘要: |
| HFC（Hybrid Fiber Coax)为多媒体和宽带业务提供了一种宽带接入方式。本文论述了HFC接入网的结构和频谱安排，并结合HFC接入网的双向改造，对媒体接入层（MAC）和物理层（PHY）进行了具体分析，同时给出DOCSIS（Data-Over-Cable Service Interface Specification)规范中MAC协议解决上行信道分配问题的实现方法以及物理层的方案；最后，给出了符合DOCSIS规范的CM（Cable Modem）和CMTS（Cable Modem Terminal System)的软件和硬件实现方案。 |
| 关键词: 有线电视网络 双向HFC接入网 通信网 电缆调制解调器 DOCSIS |
| DOI：10.3969/j.issn.1001-893X. |
| Revised:May 16, 2001 |
| 基金项目: |
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| Design and Realization of CM and CMTS Based on DOCSIS |
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| Abstract: |
| HFC (Hybrid Fiber Coax) provides a kind of broadband access way for multimedia and broadband services. The structure and the spectrum allocation scheme of HFC are described. The MAC layer and PHY layer of dual-direction HFC network are analyzed in detail. The upstream channel allocation scheme in MAC and the scenario of PHY in DOCSIS (Data-Over-Cable Service Interface Specification) are presented. Finally, The software and hardware designs of CM (Cable Modem) and CMTS (Cable Modem Terminal System) conforming to DOCSIS are given. |
| Key words: CATV network,Dual HFC access network,Design |
