摘要
FTTx是未来固定宽带接入的发展方向。随着市场需求、建设成本、国家政策等各方面因素的推动,我国FTTx用户获得了快速发展。EPON和GPON是实现FTTx的两种主要技术。与GPON相比,EPON具有产业链更完整成本更低的优点,近年来国内运营商主要采用EPON技术来实现FTTx。北京联通在前几年主要采用FTTB方式,FTTH已成为当今主流的应用模式。从2005年至今,北京联通在EPON实际应用中遇到了一些问题并采取了相应解决办法。未来xPON将向10Gbit/s更高速发展,容量和分光比进一步提高,单位成本进一步降低,FTTH将引发一场全球性技术革命。
FTTx is the future direction of development of fixed broadband access.With the pushing of factors of various fields such as market demand,construction cost,state policies,FTTx users of our country have obtained fast development.EPON and GPON are the two main technologies to achieve FTTx.Compared with GPON,EPON has the advantages of complete industry chains and lower cost,thus in recent years the domestic operators mainly adopt EPON technology to achieve FTTx.Beijing Unicom mainly adopts FTTB way in recent years,FTTH has become the main application model.From 2005 to the present,Beijing Unicom has met some problems and adopted the corresponding solutions in EPON practical application.The direction of future development of xPON is more high-speed up to 10Gbit/s,with higher spectral ratio and lower unit cost,FTTH will initiate a global technical revolution.
出处
《电信网技术》
2010年第9期28-33,共6页
Telecommunications Network Technology
