EoC带宽增强方案的设计和实现  

Design and implementation of EoC bandwidth-improving solution

作　　者：刘孝圣 刘磊[2] 郑艳伟[2] 彭飞[1,2] 

机构地区：[1]中国科学院大学,北京100190 [2]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

出　　处：《计算机工程与设计》2015年第1期6-10,16,共6页Computer Engineering and Design

基　　金：国家科技支撑计划课题基金项目(2012BAH73F02);中科院重点部署项目课题基金项目(KGZD-EW-103-4)

摘　　要：为提升使用EPON+EoC方案进行双向化改造后的有线电视网络用户的下行带宽效果,提出EoC带宽增强方案。在原有EoC通道基础上,通过新增QAM通道,统一管理、分配和使用新增的QAM通道资源和原有的EoC通道资源,并通过调整新增资源数量实现渐进扩容。基于OCTEON CN5860多核网络处理器平台设计并实现该方案中的核心设备,即融合通道网关。性能测试结果表明,该设备单个处理核心可以提供920 Mb/s的吞吐量,具有良好的可扩展性。EPON＋EoC is usually adopted in the bi-direction reconstruction of HFC networks, but the downlink bandwidth is still not enough to satisfy users＇ increasing demand. To increasing the EoC downlink bandwidth, an EoC bandwidth-improving solution was put forward, which increased downlink bandwidth by adding several QAM channels, then managing, allocating and using their resources with the original EoC channel resources in a unified way. Downlink bandwidth was gradually increased by adjusting the amount of QAM devices The design and implementation of the converged channel gateway （CC_GW） which was the key device of the solution was carried out on the OCTFX）N CN5860 multi-core networking processor platfornx The evaluation of CCX3W＇ s performance was given. Evaluation results indicate that each PE can provide 920 Mb/s throughputs, and has good scalability.

关 键 词：EoC带宽增强 融合通道网关 HFC网双向改造 OCTEON CN5860 网络处理器 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]