计算机工程

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基于多协议封装的多通道传输方案设计

杨中臻1,2,王劲林1,郑艳伟1,王献冠1   

  1. (1. 中国科学院声学研究所国家网络新媒体工程技术研究中心,北京 100190;2. 中国科学院研究生院,北京 100049)
  • 收稿日期:2013-03-15 出版日期:2013-11-15 发布日期:2013-11-13
  • 作者简介:杨中臻(1984-),男,博士研究生,主研方向:网络通信,网络新媒体技术;王劲林,研究员;郑艳伟,助理研究员; 王献冠,博士研究生
  • 基金项目:
    国家“863”计划基金资助项目(2011AA01A102);国家科技支撑计划基金资助项目(2012BAH02B01);中科院重点部署项目课题基金资助项目(KGZD-EW-103-4)

Design of Multiple-channel Transmission Scheme Based on Multi-protocol Encapsulation

YANG Zhong-zhen 1,2, WANG Jin-lin 1, ZHENG Yan-wei 1, WANG Xian-guan 1   

  1. (1. National Network New Media Engineering Research Center, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China; 2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China)
  • Received:2013-03-15 Online:2013-11-15 Published:2013-11-13

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

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