- 10G GPON is evolved from the existing GPON technology, the factors promoting the technology evolution to Huawei 10G GPON are as follows:
- Developing services require higher bandwidths and the GPON technology cannot meet bandwidth requirements.
- Innovative access technologies on the user side require higher bandwidths and the GPON technology will face bandwidth bottlenecks.
- A greater split ratio and a longer transmission distance increase network construction investments.
GPON Technology Evolution Roadmap
XGS-PON, provides symmetric 10G GPON transmission (Maximum downstream line rate: 9.953 Gbit/s, Maximum upstream line rate: 9.953 Gbit/s ).
TWDM PON, provides symmetric 40G GPON transmission ( Maximum downstream line rate: 40 Gbit/s, Maximum upstream line rate: 40 Gbit/s ).
Standard Formulation Progress
In 2004, International Telecommunication Union-Telecommunication Standardization Sector (ITU-T) Q2 started to research and analyze the possibility of evolving GPON to XG PON.
In September 2007, Q2 officially released the enhanced wavelength plan to standardize the coexistence of GPON and XG PON.
In November 2007, Q2 confirmed the XG PON standardization roadmap. With the goal of achieving low cost, high capacity, wide coverage, full service, and high communication capability, Q2 sped up the researching and finalizing of the XG PON standard.
In October 2009, Q2 officially released the phase 1 text for the XG PON standard during the SG15 plenary meeting. The text contained overall requirements for XG PON (G.987.1) and physical-layer physical media dependent (PMD) standard (G.987.2).
In June 2010, Q2 released the convergence-layer GPON transmission convergence (GTC) standard (G.987.3) and the management-layer optical network terminal management and control interface (OMCI) standard (G.988) for XG PON.
A 10G GPON network is of the point-to-multipoint (P2MP) type, which is the same as that of a GPON network.
10G GPON network contains an optical line terminal (OLT) Huawei MA800, optical network units
(ONUs), and an optical distribution network (ODN).
The Optical line terminal (OLT) is an aggregation device located at the central office
(CO) for terminating the PON protocol.
Optical network units (ONUs) are located on the user side, providing various types of
ports for connecting to user terminals.
The Optical distribution network (ODN) is composed of passive optical components
(POS) such as optical fibers, and one or more passive optical splitters. It interconnects
the OLT and ONUs.
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