GPON Training

GPONNetwork Product Line Technical Support Dept.
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- All over IP
ISDN
HDSL
ADSL
ADSL2+
The xDSL technology cannot solve the contradiction between distance and bandwidth.
Question: What to do?
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adsl8M800kadsl2adslANNexm24m3mxdslvdsl230m100m1kmadsl
HUAWEI TECHNOLOGIES CO., LTD.
ponpon
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PSTN
Internet
CATV
ONU
ONU
A PON network is a point to multiple points (P2MP) passive optical network.
A PON network consists of the Optical Line Terminal (OLT), Optical Network Unit (ONU), and Passive Optical Splitter (POS) .
Passive Optical Splitter
ponp2mpp2mpp2pp2poltonup2mpoltpos,

NE Network Element
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GE-PON: Gigabit Ethernet Passive Optical Networks
GPON: Gigabit-capable Passive Optical Networks
EPON
GEPON
GPON
ATM
APON
BPON
Ethernet
EPON
GPON
Good, only Ethernet
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gpon1128epon164gpon1256
gponatm eth tdmeponeth
Ontgponomcigponomciepononoltt
Three advantages:
1. Longer transmission distance: Transmission over optical fibers reaches the maximum of 20 km transmission distance.
2. Higher bandwidth: downstream 2.5 Gbit/s and upstream 1.25 Gbit/s (the PMD layer) for each subscriber
3. Optical split feature: The single optical fiber from the CO is split to multiple drop optical fibers to save the resources.
< 1 Mbps
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The GPON system uses bto implement the bi-directional transmission over a single fiber (a forced transmission mode).
Over a single optical fiber, to separate the Tx and Rx signals of multiple subscribers, the GPON system uses the following two multiplexing technologies:
The downstream data streams use the broadcast technology.
The upstream data streams use the TDMA technology.
GPON Technology----Data Multiplexing
1490onu1310tdma
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Broadcast mode: The length of any downstream GPON frame is fixed to 125 us and the frames are broad cast to all the ONUs. In this way, all the ONUs can receive the same data. The ONUs differentiate the frames by Gemport ID and filters the frames to receive its own data.
GPON Technology----Downstream Data
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TDMA mode: The upstream GPON data is transmitted in the TDMA mode. The uplink is divided into different time slots, which are allocated to each ONU according to the upstream bandwidth map field in the downstream frames. Hence, all ONUs can transmit their own data based on a specific sequence and no conflict for competing timeslots occurs.
GPON Technology----Upstream Data
ontontoltgponontoltontoltontontontg9843oltupstream bandwidth mapontontupstream bandwidth mapONUONU

0.15552 Gbit/s up, 1.24416 Gbit/s down
1.24416 Gbit/s up, 2.48832 Gbit/s down (mainstream rates supported currently)
Maximum logical reach: 60 km
Maximum physical reach: 20 km
Maximum differential between the farthest and nearest ONUs from the OLT: 20 km
Optical split ratio: 164. It can be upgraded to 1: 128.
Basic Performance Parameters of a GPON Network
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1641256
MA5600T Product Introduction
The MA5600T is an integrated optical-copper access platform that provides flexible user access modes and effectively ensures the smooth evolution from copper access to optical access.
The MA5600T is able to provide multiple services over legacy copper lines using xDSL access technologies such as ADSL2+, VDSL2, and SHDSL.
As an OLT in the xPON system, the MA5600T works with various ONUs. It supports xPON access and P2P optical access, meeting requirements for various FTTx access applications such as fiber to the home (FTTH), fiber to the building (FTTB), fiber to the curb (FTTC), and base station access.
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FTTx
The FTTx solutions include FTTB/FTTC, FTTH, FTTO, and FTTM.
FTTH: Provides video, voice and data services for new buildings and high-end residential areas.
FTTB/FTTC: Applicable to reconstruction of old urban areas and fiber to the curb scenarios. In reconstruction of old urban areas, MDUs are used to provide ADSL2+ or VDSL2 user access services at a rate ranging from 2 Mbit/s to 20 Mbit/s. In an FTTB or FTTC scenario, the fiber reaches the building or the optical distribution box at the curb, and the original copper cable on the user access side can still be used, hence reducing investments in devices.
FTTO: Applicable to enterprise users, and government, bank, or hospital offices. SBUs are used to provide E1, GE, and POTS ports to meet the office requirements.
FTTM: Applicable to service backhaul of 2G/3G mobile base stations. CBUs are used to provide FE and E1 ports to meet the requirements of mobile backhaul in various scenarios.
MA5603T/MA5683T subrack
MA5600T/MA5683T subrack
Flexible networking
MA5606T subrack
Not supported in V800R008 or later versions
EOS: Dec 31, 2010
OLT: MA5600T&MA5680T/MA5603T&MA5683T
MSAN: MA5600T/MA5603T/MA5606T (MCUA&MCUC)
Small capacity
Medium capacity
Large capacity
The MA5680T/MA5683T is available for sales in China and some other specific countries and areas. In other countries and areas, the MA5600T/MA5603T is used unless otherwise specified.
The MA5606T cannot function as an OLT.
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HUAWEI Confidential
Cabinet Configuration
Dimensions (W x D x H) of the N63E-22 cabinet: 600 mm x 300 mm x 2200 mm
Maximum number of users in a 63E-22 cabinet: 8192 (GPON, 1:64 split ratio, full configurations in two subracks)
Power consumption of the 63E-22 cabinet: 2840 W (in full configuration)
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In each subrack, only one SCUL control board, one GIU board, and one PRTG board are configured.
xPON boards are installed from left to right and TOPA boards (native TDM) are installed from right to left.
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PRTG
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Parameter
Specification
530 mm x 275.8 mm x 447.2 mm
Maximum power consumption
Function
System control, service switching, and management core of integrated NMS
Simple routing protocols
SCUB: all-GE switching matrix, with a 48G bi-directional switching capacity
SCUL: all-10GE switching matrix, with a 48G bi-directional switching capacity
SCUN: all-10GE switching matrix, with a 960G switching capacity (in load sharing mode)
Port
ETH port (10/100M Base-T maintenance Ethernet port)
ESC port (environment monitoring port)
Four GE upstream optical ports (no available on SCUL)
SCUL
SCUL
SCUN
SCUB
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FTTx
P-*
The SCUx board is a super control unit board and is the core of the system control and service switching and aggregation. It can also function as the management and control core of the NMS. The SCUx board communicates with service boards about the management and control information through the master/slave serial port and inband GE/10GE channel. In this way, the SCUx board configures, manages, and controls the device. It also implements the simple routing protocol function.
The SCUL control board supports the following functions:
Functions as a system control and management unit.
Supports local and remote maintenance.
Supports active/standby switchover.
Provide a GE or 10GE channel to the service board.
Supports environment monitoring parameters.
Supports the CKMA clock daughter board and works with the BITS interface board to implement the clock phase-lock function.
Configured with the CKMC clock daughter board to implement the 1588v2 time and clock synchronization
Supports the VoIP logical daughter board.
The SCUN control board supports the following functions:
Functions as a system control and management unit.
Supports local and remote maintenance.
Supports active/standby switchover.
Supports load sharing.
Provides a GE or 10GE channel to the service board.
Supports environment monitoring parameters.
Switching chip
Debug Ethernet port
Maintenance serial port
Monitoring serial port
10GE switching chip
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Besides switching capability, they have the following differences.
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SCUB
SCUL
SCUN
Supports load sharing mode.
Supports 4-port upstream boards.
4
0
4
Recommended in common GPON scenarios
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Function
GPON service boards work with ONUs to implement the functions of the OLT in a GPON system.
GPBC
GPBD
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Board
1:128
FTTx
Provides four xPON ports.
The GPBD board supports the following functions:
Provides eight xPON SFP ports (one-fiber bi-directional).
Supports a maximum of 128 ONTs per xPON port.
Supports Class B+ and Class C+ optical modules.
Supports temperature query and power-off in case of a high temperature.
Architecture of the GPBC/GPBD Board
Control module: Loads the board software, controls the running of the board, and manages the board.
Switching module: Aggregates the signals from four (eight) GPON ports.
Interface module: Converts between GPON signals and Ethernet packets.
Power module: Supplies power to other function modules of the board.
Clock module: Provides the working clock for other function modules of the board.
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SCUL/SCUN
SCUL/SCUN
X2CA
2
SCUL/SCUN
SCUL/SCUN
X2CS
2
SCUL/SCUN
SCUL/SCUN
GICD
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SCUB
SCUB/SCUN
GICE
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SCUB
SCUB/SCUN
GICF
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SCUL/SCUN
SCUL/SCUN
GICG
2
SCUL/SCUN
SCUL/SCUN
GICK
2
SCUL/SCUN
SCUL/SCUN
GSCA
4
SCUB
SCUB/SCUN

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Function
PRTA is a power transfer board. It leads in -48 V DC power for supplying power to the device.
Specification
Detects input undervoltage, availability of power supply, and power supply faults.
Reports alarms and board ready status.
Provides an ALARM indicator.
Working Principle
The figure on the right illustrates the working principle of the PRTA board.
FTTx
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Function
PRTA is a power transfer board. It leads in -48 V DC power for supplying power to the device.
Specification
Detects input undervoltage, availability of power supply, and power supply faults.
Reports alarms and board ready status.
Provides an ALARM indicator.
Working Principle
The figure on the right illustrates the working principle of the PRTA board.
FTTx
Lift cabinet is the olt cabinet.
The right cabinet is the odf cabinet.
And the white ones are splitter in the right cabinet, which are installed from the bottom to the top
FTTx
The red boards are Super Control Unit Board: SCUN.
The green ones are uplink boards.
Another boards which have 8 ports are GPON Service Board: GPBD
OLT FRAME
Each splitter map only one interface board, GPBD.
The IN port of splitter connect to the port of GPBD with fibers.
The OUT port of splitter connect to the ODF frame with fibers.
Don’t forget the labeling.
FTTx
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The fibers are protected by corrugated pipe, and the pipe need pass through the cable ladder.
FTTx
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if there isn’t the cable ladder, we need install one.
FTTx

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Transcript of GPON Training