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分析了HFC网络实现双向数据传输的结构,分析比较了802.14/DOCSIS规范,提出使用扩频技术可以获得稳固的传输特性,就S_CDMA多址接入方式和M_aryCDMA方式分别设计了Internet接入的MAC层协议——竞争/冲突解决和轮询机制,分析表明该协议简单有效,易于实现。
The structure of bidirectional data transmission in HFC network is analyzed. The 802.14 / DOCSIS specification is analyzed and compared, and a stable transmission characteristic is obtained by using spread spectrum technology. The MAC layer of Internet access is designed respectively for S_CDMA multiple access and M_aryCDMA Agreement - competition / conflict resolution and polling mechanism, analysis shows that the agreement is simple and effective, easy to implement.