GPON PRESENTATION Eric Saniard 2018
Agenda Basic Concepts of PON PON Standards Overview of Optical Access Network GPON mode of protection GPON power budget Management and service provisioning Basic Services over GPON Network Main Vendors & Example of installation Slide #2
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. Slide #3
What is PON? P assive O ptical N etwork Passive Optical Splitter ONT Optical Line Terminal ONT Optical Distribution Network PSTN or VoIP ODN Passive Optical OLT Internet Splitter ONU Feeder Optical Network Unit IPTV/CATV 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. Slide #4
Why PON ? <1Mbps 3M 8M 25M 100M 2.5G 10G G-PON, XGS-PON, TWDM-PON Access ADSL/ADSL2+ VDSL / ADSL2+ Fiber Based Technology Copper Based Copper Based Coverage ~20-30km <3km <2km <1km diameter VoD Live TV Internet HDTV VoD Service Video conferencing Game requirements HDTV Remote control 2002 2003 2006 2018 • GPON （ Gigabit Passive Optical Networks ） Time • GPON supports Triple － play service, providing competitive all-service solution. Ø PON is a kind of passive optical network, broadband point to multiple-points architecture; • GPON supports high-bandwidth transmission (2.5Gbps – 1.25 Gbps) Ø PON is short for Passive Optical Network ; • GPON supports the long-reach (Typically 20 km) service coverage. Ø GPON consists of Optical Line Terminal ( OLT ), Optical Network Unit/Terminal • GPON is the choice of the large carriers operators. ( ONU/ONT ) and Optical Distribution Network (ODN) including Passive Optical Splitter. • 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 Slide #5
GPON Principle --- Data Multiplexing GPON adopts Wavelength Division Multiplexing (WDM) technology, facilitating bi-directional communication over a single fiber. 1490nm 1310nm To separate upstream/downstream signals of multiple users over a single fibre, GPON adopts two multiplexing mechanism: Ø PON is a kind of passive optical network, broadband point to multiple-points architecture; Ø PON is short for Passive Optical Network ; – In downstream direction, data packets are transmitted in a broadcast manner; Ø GPON consists of Optical Line Terminal ( OLT ), Optical Network Unit/Terminal – In upstream direction, data packets are transmitted in a TDMA manner. ( ONU/ONT ) and Optical Distribution Network (ODN) including Passive Optical Splitter. Slide #6
GPON Principle --- Downstream Data Broadcast mode Slide #7
GPON Principle --- Upstream Data TDMA mode Slide #8
PON Standards This chapter analyses major GPON standards and evolutions . Slide #9
Recent progress in PON Standards Slide #10
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. Slide #11
Architecture of Optical Access Network Slide #12
Architecture of Optical Access Network Slide #13
GPON mode of protection This chapter shows the three main types of GPON protection Slide #14
GPON Network Protection Mode Type A: No protection Slide #15
GPON Power Budget This chapter describes GPON optical power budget . Slide #16
Optical Power Attenuation Ø Power attenuation calculation of Optical splitter Ø Input attenuation of optical splitter(<1dB): ∑(Power input) - ∑(Power output of all branch) Input Output 1:2 optical splitter Attenuation of 1:2 splitter: 3dB Attenuation of 1:4 splitter: 6dB Attenuation of 1:8 splitter: 9dB Attenuation of 1:16 splitter: 12dB Attenuation of 1:32 splitter: 15dB Attenuation of 1:64 splitter: 18dB Attenuation of 1:128 splitter:21dB Output Input 2:N optical splitter Slide #17
Fiber Attenuation and Power Budget Ø Fibre attenuation relates to the fibre length About 0.5 dB max per km The attenuation of fibre splicing point is Ø for 1310nm and 0.3dB max per Km for 1490nm typically 0.1dB/02dB Other factors may cause attenuation, such Ø A class B+ OLT and ONU as fibre bending can accept a total loss of 28 dB 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. Slide #18
Parameters of GPON Interfaces (Class B+) Slide #19
Parameters of GPON Interfaces (Class B+) Slide #20
Management and Service Provisioning This chapter describes GPON management and service provisioning. Slide #21
GPON NMS NMS is connected with OLTs only through a DCN 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. Slide #22
GPON Service Provisioning and Zero Configuration on Terminals Carriers’ nightmare Flexible Configuration plan of GPON Initial configurations (such as service system information GPON supports zero configuration on configuration, data configuration) are required on terminals and plug-and-play of terminals, terminals and then they can be put into use. To finish which is cost-effective. these configurations, it is not cost-effective to carriers. Application scenario 1 Subscribe for services Order Management Service Provisioning CRM Billing Configure service network 2 NMS 3 Send terminals to users 1 Finish the auto-configuration of OLT Access Network Use OMCI to finishing data configuration on ONT 3 2 ONT ONT STB ONT Start up ONT and make registration with serial number User ONT Slide #23
Basic Services over GPON Network This chapter describes basic services provided by GPON System, such as Triple-play, TDM and RF overlay services. Slide #24
Triple Play in GPON BB service platform PC VoD Server TL1/CORBA Notification /API Middle ware SFU Carrier’s OSS IPTV NMS Phone Intern Ethernet VDSL et IP Core MDU CPE MSE Splitter OLT PC BRAS SBU Phone AAA Server Soft switch CBU Base station FE E1 IP Voice ODN NSP CPE ASP/ISP Slide #25
TDM service solutions in GPON PBX CESoP mode l With fixed upstream/downstream Native mode frame structure, periodic E1/T1 multiframes are transmitted in GPON line. So, GPON can ONT transmit TDM service with first- ODN PSTN born advantage. BUSINESS E1/T1 l OLT supports processing Splitter OLT LE TDM service in Native ONT ONT CO and CESoP modes. FE l With guaranteed QoS, GPON ensures E1/T1 the parameter indexes of TDM service, PBX such as end-to-end delay, Jitter and error bit rate. Slide #26
RF Overlay Service Solution in GPON EDFA （ Erbium Doped Fiber Amplifier ） Customer Video Central 1550nm Premises Voice/Data Office Voice/Data& Video Downstream 1490nm 1490/1310nm ， 1550nm Optical ONU OLT Couplers (Optical Network Terminal) (Optical Line Terminal) （ WDM ） Upstream 1310nm Optical Splitter Video IP （ RF ） Upstream Downstream 1310nm 1490nm 1550nm Voice and Data Voice and Data Video @1250Mbps @2500Mbps 42Mhz 550Mhz 860Mhz Analog TV Digital TV HD/VOD Slide #27
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 Slide #28
Main GPON Vendors ADTRAN (USA) Huawei (China) Allied Telesis (Japan) NEC (Japan) Altice Labs (Portugal) Nokia (Finland, Ex - Alcatel-Lucent) Calix (USA) Raisecom (China: This company has Cisco (USA) Implemented a GPON network in Nigeria) DASAN (Korea, Ex – Zhone) Tellabs (USA) FiberHome (China) ZTE (China) Fujistu (Japan) Slide #29
Examples of Huawei OLT 5800-X17: 5800-X2: Switching capacity: 7 Tbit/s Switching capacity: 480 Gbit/s 272 x GPON/EPON 32 x GPON/EPON 816 x GE/FE 96 x GE/FE 136 x 10G GPON/10G EPON 16 x 10G GPON/10G EPON 136 x 10G GE 16 x 10G GE 544 x E1 64 x E1 H x W x D: H x W x D: 442 mm x 268.7 mm x 88.1 mm 493 mm x 287 mm x 486 mm Slide #30
Examples of Nokia ONTs Slide #31
Optical Distribution Network (ODN) Passive Accessories Splitter 1/8 Splitter 1/32 Floor distribution board Slide #32
Installation: 1- CENTRAL OFFICE OLT & ODF Slide #33
Installation: 2 - Optical fiber cable in existing infrastructure (example: sewers) Slide #34
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