摘要： 广电接入网方案采用以太网无源光网络和同轴电缆入户技术，无法利用通道绑定机制聚合边缘调制器(IPQAM)的多个通道带宽。为此，提出一种基于多协议封装(MPE)的多通道传输协议(MC-MPE)，并基于MC-MPE设计一种多通道传输方案。MC-MPE继承MPE的优点，兼容现有的硬件解码资源，并通过IP层和MPE层之间的多通道传输层来支持数据流的优先级传输、丢包检测以及快速重排等功能。分析结果表明，与有线电缆数据服务接口规范(DOCSIS) 3.0相比，MC-MPE的封装效率略高，且基于MC-MPE的多通道传输方案通过灵活的通道绑定机制，可使用户的下行平均带宽超过DOCSIS 3.0网络，符合非对称业务上窄下宽的需求。
关键词:
光纤同轴电缆混合网,
多通道传输,
多协议封装,
封装效率,
通道绑定,
网络扩容
Abstract: For the lack of channel bonding mechanism in Ethernet Passive Optical Network(EPON) and Ethernet over COAX(EoC) network, based on Multi-protocol Encapsulation(MPE), this paper proposes a Multiple Channel MPE(MC-MPE), and then designs a multi-channel transmission scheme. By introduction of multi-channel transmission layer between the IP layer and MPE layer, MC-MPE is compatible with existing hardware, and supports for transmitting with priority, reordering packet quickly and detecting packet loss. Analysis result shows that the MC-MPE encapsulation efficiency is slightly higher than Data-Over-Cable Service Interface Specifications(DOCSIS) 3.0. Multi-channel transmission scheme based on MC-MPE can significantly improve user access bandwidth, exceed the level of DOCSIS 3.0, and make networks meet the narrow width asymmetric service needs.
Key words:
hybrid fiber coax,
multi-channel transmission,
Multi-protocol Encapsulation(MPE),
encapsulation efficiency,
channel bonding,
network capacity expansion
中图分类号:
杨中臻，王劲林，郑艳伟，王献冠. 基于多协议封装的多通道传输方案设计[J]. 计算机工程.
YANG Zhong-zhen, WANG Jin-lin, ZHENG Yan-wei, WANG Xian-guan. Design of Multiple-channel Transmission Scheme Based on Multi-protocol Encapsulation[J]. Computer Engineering.