Design And Practice Of FTTH Network On Three-network Convergence

"Three-network convergence" is the telephone, broadband and television in theorganic integration of the business level，Telecom operators in order to seize themarket needs to build a capable of carrying the " three-network convergence "business, strong stability, large transmission capacity and high security safetynetwork.Telecom operators have trunk transmission network of optical fiber IP, But the useraccess is still using the access network based on copper cable access, Restrict thedevelopment of information and communication network, In the technical aspects ofthe existing network hindered " three-network convergence " business development.While FTTH technology emerge as the times require, FTTH network becoming the"best network convergence" choice.This paper analyzes technical principle and system based on telecommunicationnetwork, broadcast television network and Internet network and existing broadbandnetwork access methods, In order to realize the integration of three networks, theexisting access network must be transformed into FTTH.Starting from the principle of communication and EPON technology basicknowledge, Describes the structural features of Ethernet passive optical network,Through the analysis of large capacity transmission and high stability is requiredtechnology business development integration of three networks. Analysis of thevarious security threats to EPON communication process, Discusses the EPON systemfor security threats by a mutual authentication and encryption mechanism, in theresearch of EPON bandwidth allocation algorithm, and discusses the realization ofdynamic bandwidth allocation algorithm in EPON system.The specific application and network architecture of the FTTH technology inoptical communication network.All-optical network loaded transmission IPTVbusiness, Discusses how to monitoring IPTV service quality in FTTH network.This paper on the combination of engineering practice, Analysis and design ofthe digital computer city FTTH access network, And the organization of construction,To verify the network performance of FTTH access network local terminal andterminal, Authentication mechanism in EPON system test, Test the IPTV businessoperation index in FTTH network. In the "Three-network convergence" in access network, from two aspects of technology and cost feasibility demonstration of FTTHaccess network is the best network construction scheme.