Gpon - TELECOMS CONSULT
Transcript of Gpon - TELECOMS CONSULT
GPON PRESENTATIONEric Saniard
2018
Agenda
Overview of Optical Access NetworkPON Standards
GPON power budget
Basic Concepts of PON
Management and service provisioningBasic Services over GPON NetworkMain Vendors & Example of installation
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GPON mode of protection
Basic Concepts of PON
This chapter describes the basic concepts and working principles of PON network. This chapter introduces the basic architecture, upstream and downstream working principles of the PON network.
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What is PON?
Passive Optical Network
OLTONU
Optical Line Terminal
Optical Network Unit
Passive OpticalSplitter
PSTN or VoIP
Internet
IPTV/CATV
ONT
ONT
Ø PON is a kind of passive optical network, broadband point to multiple-points architecture;Ø PON is short for Passive Optical Network ;Ø GPON consists of Optical Line Terminal (OLT), Optical Network Unit/Terminal (ONU/ONT) and Optical Distribution Network (ODN) including Passive Optical Splitter.
Passive OpticalSplitter
Feeder
Optical Distribution NetworkODN
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Ø PON is a kind of passive optical network, broadband point to multiple-points architecture;Ø PON is short for Passive Optical Network ;Ø GPON consists of Optical Line Terminal (OLT), Optical Network Unit/Terminal (ONU/ONT) and Optical Distribution Network (ODN) including Passive Optical Splitter.
• GPON(Gigabit Passive Optical Networks)• GPON supports Triple-play service, providing competitive all-service solution.• GPON supports high-bandwidth transmission (2.5Gbps – 1.25 Gbps)• GPON supports the long-reach (Typically 20 km) service coverage.• GPON is the choice of the large carriers operators.• GPON evolution: same Infrastructure can support new standards such: XG-PON(10Gbps-2.5Gbps), XGS-PON,
TWDM-PON (10Gbps-10Gbps) and near future > 40G & 100G
<1Mbps 3M 8M 25M
ADSL/ADSL2+Copper Based
VDSL / ADSL2+Copper Based
G-PON, XGS-PON, TWDM-PON Fiber Based
2002 2003 2006 2018
Time
100M 2.5G 10G
Internet
Video conferencing
Remote control
AccessTechnology
Servicerequirements
VoD
HDTV
Game
Live TV
VoD
HDTV
<3km <2km <1km ~20-30kmCoveragediameter
Why PON ?
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Ø PON is a kind of passive optical network, broadband point to multiple-points architecture;Ø PON is short for Passive Optical Network ;Ø GPON consists of Optical Line Terminal (OLT), Optical Network Unit/Terminal (ONU/ONT) and Optical Distribution Network (ODN) including Passive Optical Splitter.
GPON adopts Wavelength Division Multiplexing (WDM) technology, facilitating bi-directional communication over a single fiber.
To separate upstream/downstream signals of multiple users over a single fibre, GPON adoptstwo multiplexing mechanism:– In downstream direction, data packets are transmitted in a broadcast manner;– In upstream direction, data packets are transmitted in a TDMA manner.
1490nm
1310nm
GPON Principle --- Data Multiplexing
Broadcast mode
GPON Principle --- Downstream Data
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TDMA mode
GPON Principle --- Upstream Data
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PON Standards
This chapter analyses major GPON standards and evolutions.
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Recent progress in PON Standards
Overview of Optical Access Network
This chapter describes the architecture of the optical access network.Besides, this chapter describes various devices applied in the FTTx network and you can get a knowledge of those devices applied in the optical access network.
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Architecture of Optical Access Network
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Architecture of Optical Access Network
GPON mode of protection
This chapter shows the three main types of GPON protection
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GPON Network Protection Mode
Type A: No protection
GPON Power Budget
This chapter describes GPON optical power budget.
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Ø Power attenuation calculation of Optical splitter
Ø Input attenuation of optical splitter(<1dB):
∑(Power input) - ∑(Power output of all branch)
Input Output1:2 optical splitter
2:N optical splitter
Attenuation of 1:2 splitter: 3dBAttenuation of 1:4 splitter: 6dBAttenuation of 1:8 splitter: 9dBAttenuation of 1:16 splitter: 12dBAttenuation of 1:32 splitter: 15dB Attenuation of 1:64 splitter: 18dBAttenuation of 1:128 splitter:21dB
Input
Output
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Optical Power Attenuation
Ø Fibre attenuation relates to the fibre length
Ø The attenuation of fibre splicing point is
typically 0.1dB/02dB
Ø Other factors may cause attenuation, such
as fibre bending
About 0.5 dB max per kmfor 1310nm and 0.3dB max per Km for 1490nm
Table G.984.2 – Classes for optical path loss
Class A Class B Class B+ Class C
Minimum loss 5 dB 10 dB 13 dB 15 dB
Maximum loss 20 dB 25 dB 28 dB 30 dB
NOTE – The requirements of a particular class may be more stringent for one system type than for another, e.g. the class C attenuation range is inherently more stringent due to the use of a 1:2 splitter/combiner having a loss of about 3 dB.
A class B+ OLT and ONUcan accept a total loss of 28 dB
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Fiber Attenuation and Power Budget
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Parameters of GPON Interfaces (Class B+)
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Parameters of GPON Interfaces (Class B+)
Management and Service Provisioning
This chapter describes GPON management and service provisioning.
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GPON NMS provides all the management needs through an intuitive GUI for: Ø configuration, Ø Maintenance,Ø Troubleshooting, Ø Seamless integration into an OSS environment with northbound interfaces,Ø ONU/ONT plug & play.Ø Some vendors can support integrated OTDR.
NMS is connected with OLTs only through a DCN
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GPON NMS
Carriers’ nightmare
Application scenario
Service Provisioning
NMS
Access Network
Billing
1 Subscribe for services
2 Configure service network
3
Order Management
Start up ONT and make registration with serial numberONTONT
ONTONT
CRM
User
Send terminals to users
1
2
Finish the auto-configuration of OLT
Initial configurations (such as service system information configuration, data configuration) are required on terminals and then they can be put into use. To finish these configurations, it is not cost-effective to carriers.
GPON supports zero configuration on terminals and plug-and-play of terminals, which is cost-effective.
Flexible Configuration plan of GPON
STB
3Use OMCI to finishing data configuration on ONT
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GPON Service Provisioning and Zero Configuration on Terminals
Basic Services over GPON Network
This chapter describes basic services provided by GPON System, such as Triple-play, TDM and RF overlay services.
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BRASAAA Server
IP Core
ASP/ISPCPE
MSE
Ethernet
OLT
Soft switch
Internet
VoD ServerMiddleware
NMS
TL1/CORBA/API
BB service platform
Carrier’s OSS
Notification
IPTV
Phone
PC
SFU
Phone
PCSBU
CPE MDUVDSL
NSP
IP
Voice
CBU
E1FE
ODN
Splitter
Base station
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Triple Play in GPON
ONT
OLT
CO
LESplitter
ONT
BUSINESS
PBX
PBX
E1/T1
ODN
E1/T1
E1/T1
FE
PSTN
CESoP mode
Native mode
l With guaranteed QoS, GPON ensures the parameter indexes of TDM service, such as end-to-end delay, Jitter and error bit rate.
l OLT supports processing TDM service in Native and CESoP modes.
l With fixed upstream/downstream frame structure, periodic multiframes are transmitted in GPON line. So, GPON can transmit TDM service with first-born advantage.
ONT
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TDM service solutions in GPON
EDFA(Erbium Doped Fiber Amplifier)
OpticalCouplers(WDM)
OLT(Optical Line Terminal)
ONU(Optical Network Terminal)
Central
Office
Video1550nm
Voice/Data& Video1490/1310nm,1550nm
Voice/DataDownstream 1490nm
Upstream 1310nm
Customer
Premises
Optical Splitter
Video
(RF)
IP
Voice and Data@1250Mbps
Voice and Data@2500Mbps
Video
Analog TV Digital TV HD/VOD42Mhz 550Mhz 860Mhz
Upstream Downstream1310nm 1490nm 1550nm
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RF Overlay Service Solution in GPON
Main vendors & Installation example
This chapter highlights the main GPON vendors with some examples of products. Then, an example of FTTH installation in Paris is shown in last slides
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ADTRAN (USA)Allied Telesis (Japan)Altice Labs (Portugal)Calix (USA)Cisco (USA)DASAN (Korea, Ex – Zhone)FiberHome (China)Fujistu (Japan)
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Main GPON Vendors
Huawei (China)NEC (Japan)Nokia (Finland, Ex - Alcatel-Lucent)Raisecom (China: This company has Implemented a GPON network in Nigeria)Tellabs (USA)ZTE (China)
H x W x D:493 mm x 287 mm x 486 mm
5800-X2:Switching capacity: 480 Gbit/s32 x GPON/EPON96 x GE/FE16 x 10G GPON/10G EPON16 x 10G GE64 x E1
H x W x D:442 mm x 268.7 mm x 88.1 mm
5800-X17:Switching capacity: 7 Tbit/s272 x GPON/EPON816 x GE/FE136 x 10G GPON/10G EPON136 x 10G GE544 x E1
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Examples of Huawei OLT
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Examples of Nokia ONTs
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Optical Distribution Network (ODN) Passive Accessories
Splitter 1/8 Splitter 1/32
Floor distribution board
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Installation: 1- CENTRAL OFFICE OLT & ODF
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Installation: 2 - Optical fiber cable in existing infrastructure (example: sewers)
Optical Fibre Cable
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Installation: 3 - Optical fiber cable in existing infrastructure (from sewers to upper side)
Optical Fibre Cable
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Installation: 4 - Optical fiber cable arrival in Private domain
Optical Fibre Cable
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Installation: 5 - Optical fiber cable arrival in Building
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Installation: 6 – Arrival of optical fiber cable in the building splitter box (Multi operators)
Optical fiber coming from underground
Optical fiber going To upper floors
Splitters and distribution
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Installation: 7- Building connection box
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Installation: 8 - Distribution box per floor
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Installation: 9 – Subscriber connection box
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Installation: 10 - ONT
AON - Active Optical NetworkAPON - ATM Passive Optical Network
[same as ATM-PON]ATM-PON - ATM PON [same as BPON]
BPON - Broadband Passive Optical Network
CPE - Customer Premises Equipment
DBA - Dynamic Bandwidth Allocation
DOCSIS - Data Over Cable Service Interface Specification
EFN - Ethernet in the First Mile
EPON - Ethernet PONFSAN - Full Service Access Network
FTTC - Fiber To The CurbFttD - Fiber To The DeskFTTN - Fiber To The NodeFTTP - Fiber To The PremisesGbE - Gigabit EthernetGE-PON - Gigabit Ethernet Passive Optical
NetworkGEPON - Gigabit Ethernet PONGPON - Gigibit PONHFC - Hybrid Fiber CoaxialHFC-PON - Hybrid-Fiber-Coax PON
OAN - Optical Access NetworkOCn - Optical CarrierODN - Optical Distribution
NetworkOEC - Optical Electrical
ConverterONT - Optical Network Terminal
[ITU-T]ONU - Optical Network Unit
[IEEE]OLT - Optical Line TerminalOLT - Optical Line Termination
OLT - Optical Line TerminalOMCI - ONU Management and
Control Interface
PMD - Physical Medium Dependent
POL - Passive Optical LANPON - Passive Optical Network
RFoG - RF over GlassRF-PON - Radio Frequency PONTDM-PON - Time Domain
Multiplexing PONUNI - User Network InterfaceWDM-PON - Wavelength Division
Multiplexing PON
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GPON Acronyms & Abbreviations:
Thank You