吉比特无源光网络GPON技术及其标准化.doc

吉比特无源光网络GPON技术及其标准化.doc吉比特无源光网络GPON技术及其标准化
Is described in this paper, the main technical features of GPON, and further explained in detail the function of protocol layer, the DBA mechanism, the ONU activate registration, OMCI, such as key technology and principle, also introduces the GPON carrying two specific ways a TDM business, as well as the standardization of GPON technology.
The proposal of GPON technology
GPON (Gigabit - Capable Passive work, Gigabit Passive work) technology is a Passive work (PON) technology is an important branch of family and other similar technologies including APON/BPON, EPON technology and so on. GPON is one of the most closely watched optical access technologies in the next two to three years.
Concept of GPON, as by FSAN (Full Service work, the whole business work) is put forward in 2001, before this, FSAN/ITU also proposes and standardize the APON, BPON technology (ITU - T G. 983. X series standard), IEEE has also started to EPON technology standardization and soon officially released in 2003 IEEE ah, marking the EPON technology standardization pleted. FSAN/ITU launched the biggest reason is due work IP GPON technology progress of acceleration and ATM technology based on ATM technique is gradually shrinking before APON/severely hindered BPON technology mercial and practical aspects, urgently need a high transfer rate and optimum IP bearer at the same time with integrated service access ability of optical access technology. In this context, the FSAN/ITU is based on the APON standard, redesigning the new physical layer transmission rate and the TC layer, and introducing new GPON technology and standards.
position of GPON system
And other similar PON technology, GPON is also a kind of the point to multipoint topology of passive Optical access technology, by the side of the bureau of OLT (Optical Line Terminal, the Optical Line Terminal), the user side ONU (work Unit, the work Unit) and ODN (Optical work, Optical work), the system reference configu