在三网融合的大背景下,广电运营商采用EPON和HiNOC技术有助于综合利用有线电视网络资源,快速完成NGB接入层的双向化建设.在说明了广电双向接入网结构的基础上,分别研究了EPON和HiNOC的网络拓扑、协议结构和MAC层运行机制,并进行了关键技术的比对分析.%In the background of tri-network integration, radio and television network operators using EPON and HiNOC technology will contribute to the comprehensive utilization of cable television network resource, and quickly complete the access layer of NGB two-way construction. On the basis of illustrating the two-way access network architecture, the network topology, protocol structure and operation mechanism of MAC layer of EPON and HiNOC are described respectively. Additionally, the key technologies are compared and analyzed.
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