| In recent years,with the continuous improvement of people's living standards,the continuous popularization of the network and the continuous enrichment of business applications,the types of communication services have expanded from the traditional one-way television service or single voice communication to high-definition television,video and multi-party data exchange.With the promotion of triple play,the broadcasting network has become the trend of the future to support broadband development of the whole business.Using the Ethernet passive optical network and the coaxial access technology supporting Ethernet to realize the two-way transformation of the radio and TV network.It has many advantages,such as low cost,full service,easy upgrading and network management,as well as paving for the follow-up FTTH.It is the first choice in the two-way transformation of the radio and television network.Combined with the Sichuan radio and television two way transformation project,this paper makes a comprehensive and in-depth study of EPON+EOC technology and its application.This paper first discusses the necessity and feasibility of bidirectional transformation of access network and the significance of bidirectional transformation based on the current usage of traditional HFC network in Sichuan Broadcasting Network and the market competition pressure.Then,starting from the network structure,combined with the operating practice,an in-depth and detailed analysis of the current situation of Sichuan Radio and TV Network Access Network was conducted,pointing out that the current traditional cable television service can not meet the needs of current customers and combine with the current market development environment.Projections of future business development needs.In view of the above problems,it is imperative to make bidirectional transformation of existing networks.In the middle of the paper,the application of the access technology for two-way transformation of radio and television networks is introduced,and then the main technical solutions for two-way transformation are discussed and compared through the study of the dual access technology and the practice in daily work.It is concluded that EPON + EOC technology is feasible in the two-way transformation of Sichuan Broadcasting Network.Finally,based on the specific situation of Sichuan Radio and TV Network and taking the typical practical two-way reconstruction project of the subsidiary of Sichuan Radio and TV Network as an example,the paper describes in detail the scheme of reforming the original network using EPON + EOC technology.The implementation of the project and the realization of two-way transformation are described in detail. |
