Research On FTTH Platform Planning And Network Design Of Tianjin Broadcasting And Television Network

In recent years,with the rapid development of information technology and people's reliance on the Internet,broadband access networks have become an important social infrastructure.The resulting tri-networks integration is in full swing across the country.In the face of increasingly fierce competition,Tianjin Broadcasting and Television Co.,Ltd.is also adapting to the trend of continuous transformation and upgrading,seeking new networking methods to meet the data transmission requirements of large information volume in the future.The emergence of FTTH(Fiber to the Home)technology indicates its development direction.FTTH technology not only has the characteristics of high bandwidth,strong anti-interference ability,stable operation,but also flexible networking capability,which makes it possible to build a new network and rebuild the network based on the original broadcast TV network resources.It will become an inevitable choice for the future development of radio and television networks.This paper firstly gives a look at the development prospects of FTTH in combination with the development of FTTH in the world and the development status of FTTH in various countries.Secondly,based on the technical difficulties in the FTTH network,the key technologies such as fiber bending technology,fiber-optic cold junction technology and PON technology are analyzed and analyzed,and the fiber optic cable and preset field fiber meet the requirements of Tianjin Broadcasting and Television.Technical solutions such as connectors and dense EPON networks.Third,since the Tianjin Broadcasting and Television Network has now built a digital TV two-way access network covering the whole city,this paper gives a comprehensive analysis of the HFC network structure,broadcast TV system and two-way access technology of its original two-way network.The TV live broadcast,on-demand and data broadband platform planning for FTTH networking is adopted,and a point-to-multipoint DVB broadcast and VOD on-demand system based on TNE1000 source transmitting platform and high-density optical amplifier(EYDFA)is adopted.At the same time,the intensive EPON equipment is used for the networking of the data network,and the dual-fiber three-wave bidirectional transmission system conforming to the development requirements of the Tianjin broadcasting and television business is realized.Fourthly,in view of the intensive household characteristics of FTTH,a trunk cable is proposed to be directly connected to the cell room or optical junction box from the remote computer room.The fiber optic cable is connected to each user by the cell room or optical box according to the star topology.Point-to-multipoint access network design.Finally,a FTTH network access network design was carried out with a community in Xiqing District of Tianjin as an example.The FTTH network design was analyzed and explained in light of the actual situation.The design practice shows that the access network design scheme proposed in this paper is flexible and can reduce the network construction cost,improve the network stability and improve the network operation and maintenance efficiency under the premise of improving service access capability.It can meet the needs of the initial construction of Tianjin Radio and Television FTTH.