04 - BPON Slides

8/9/2019 04 - BPON Slides

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ARCHITECTS OF AN INTERNET WORLD

Alcatel Confidential and Proprietary5/9/02 1

Broadband PassiveOptical Networking 101


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ARCHITECTS OF AN INTERNET WORLD PON?

Next generation networking technology

Optics for high bandwidth

Covers long distance without amplification

Packet protocols for flexible data transmission

Wave division multiplexing (WDM) for future growth

Advantages

No active electronics in outside plant

Higher reliability than copper solutions

Higher capacity closer to the user

Lower distribution plant operating cost

Evolution to all fiber network


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ARCHITECTS OF AN INTERNET WORLD A / B / E / G PON

Multiple ways of implementing PON

APON - ATM PON

first commercial product used primarily for business applications

BPON - Broadband PON

expanded version of APON

added functionality to support robust video services EPON - Ethernet PON

PON using Ethernet for packet data

still evolving

GPON - GigaPON evolving PON technology at gigabit rates

Alcatel uses BPON in 7340 FTTU


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ARCHITECTS OF AN INTERNET WORLDPON standards

FSAN- Full Service Access Network is an organizationfor standardizing APON, BPON, and GPON in ITU G.983.x

FSAN members include SBC, Bell South, Deutche Telecom

France Telecom and vendors such as Alcatel and NEC

IEEE- EFM study group is currently working on standardizing

EPON. Vendors include Alloptic and Cisco


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OLT

access network home

network

ONU - Optical Network UnitONT - Optical Network TerminationOLT - Optical Line TerminationNT - Network Termination

UNI

ONT

ONT

ONT

fiber

FTTH

ONU

fiber

FTTB/C

copper

ONU

fiber

FTTCab

copper

SNI

PON Access Network Types

Central

Office


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C.O

C.OPON+ Passive and flexible cable plant

+ High bandwidth over ONE fiber+ Low fiber plant cost

Point to Point+ Hi Bandwidth- High ONT cost due to optical lasers.- High Fiber Plant cost because of point to

point configuration of fiber pairs.

Optical Access Technologies


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ARCHITECTS OF AN INTERNET WORLD ITU G.983-3

OLT

Upstream G.983-1 band Reserved by ITU-T

Enhanced Band [1] future L band >

13401260 1280 1300 1320 1360 1380 1400 1420 1440 1460 1480

1480 1490 1500 1510 1520 1530 1539

Downstream Data

1610 16201590 16001550 1560 1570 1580

1490nm

1310nm WDM1490 Rx

1310 Tx

1490

13101550

1490

1310

ONT

PassiveOptical

Splitter 1:N

EDFAand

VIDEOTX

1550nmWDM

1550nm

Video Rx

WDM

1550

1310nm

1490nm 1550nm

Video Overlay

Also known as Broadband Passive Optical Network (BPON)


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Single modePigtail

1310 nm Laser LD

PIN-TIA(622 or 155 Mb/s)

1555 blocking filter w/dielectric layer:

- on mirror- optionally on PIN-TIA facet

Diplexer

PON Optics


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ONT Triplexer Module - Key BPONEnabling Technology component

1310 nm Laser LD

1550-1560 nmAnalog PIN

Digital PIN-TIA

(622 /155 Mb/s)

Primary Thin film WDM

Reflect/pass 1550-1560 nmblock 1480-1500 nm Transmit/pass 1480-1500block 1550-1560 nm Transmit /pass 1260-1360 nm

Single modePigtail

Secondary Thin film WDM Reflect/pass 1480-1500 nmblock 1550-1560 nm Transmit /pass 1260-1360 nm

1310 nm Laser LD

1550-1560 nmAnalog PIN

Digital PIN-TIA

(622 /155 Mb/s)

Primary Thin film WDM

Reflect/pass 1550-1560 nmblock 1480-1500 nm

Transmit/pass 1480-1500block 1550-1560 nm Transmit /pass 1260-1360 nm

Single modePigtail

Secondary Thin film WDM

Reflect/pass 1480-1500 nmblock 1550-1560 nm Transmit /pass 1260-1360 nm

G.983-3 Optical system

1480-1550 nm 622 Mb/s down

1310 nm, 155 Mb/s up

46-870 MHz CATV Video Rx

Low form factor < 2 X 3

Consumption Objective: < 1W

Tentatively low price

Objective 1M< $100


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1550 nm

1490 /1310 nm

FTTH ONT(inside or

outside)

HomeCentral Office OpticalDistribution

Network

ONT

ONT

ONTONT

ONT

ONT ONT

RJ11

Coax

RJ45

Up to 20km

OLT

EDFA

ONT

Alcatels BPON Solution


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OLTOLT ONTONT

ONTONT

Ranging Process

OLT uses ranging to locate each ONT in the network.

Ranging is required to prevent collision of data due to varyingONT distances

APON/BPON can range up 20km

ITU standardized splitting ratio is 1:32

ONTONT

1490nm1490nm

1310nm1310nm

A B C B

C

A

1:32

A

B

C


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1310nm1310nm

A B COLTOLT

ONTONT AA

BB

ONTONT

CONTONT

1490nm1490nmAC B

AC B

AC B

AC B

C

PON Data Transport

Downstream data broadcast using TDM (Time Division Multiplexing)

Upstream TDMA(Time Division Multiple Access)

Timeslot grants are given from the OLT to ONTs for upstream data

155Mbps Downstream/155Mbps Upstream (ITU Standardized)

622Mbps Downstream/155Mbps Upstream (ITU Standardized)

622Mbps Downstream/622Mbps Upstream (recently standardized)


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OLTOLT

ONTONT

ONTONT

ONTONT

APON Data Transport

ATM connections use Virtual Path(VP) and Virtual Channel (VC)

Each ONT has a unique serial number

Each ONT has at least one VC for voice and another for data

The ONT serial number is used in the Churning process to encrypt

data from the OLT to the ONT.

OLT assigns cell rates to the ONTs for bandwidth allocation


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OLTOLT

ONTONT

ONTONT

ONTONT

PON Management

PLOAM (Physical Layer Operations Administrations and Maintenance)

PLOAM cells are used for managing the ONT such as transmission grants,

software upgrades, ranging, configuration, bandwidth allocation and other

operations and management functions.

PLOAM CELLS


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ARCHITECTS OF AN INTERNET WORLD A/BPON Frame Format

Tframe = 53 cells of 56 bytes per frame

3 overhead bytes per cell containing guard bits, control, and status

Contents of overhead bytes are programmable by OLT

UPSTREAM FRAME FORMAT

ATMCell 1

ATMCell 2

ATMCell 3

. . . ATMCell 53

PLOAM cells contain upstream grants, control, and statusTframe = 56 cells of 53 bytes per frame

152.67us per frame (155.52Mbps)

DOWNSTREAM FRAME FORMAT

PLOAMCell 1

ATMCell 1

ATMCell 27

PLOAMCell 2

ATMCell 28

ATMCell 54

. . . . . .


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CBR (Constant Bit Rate)Highest QoS used for voice

traffic takes highest priority.

UBR (Unspecified Bit Rate)data traffic lowest priority.

CAC (Connection Admission Control)functionreleases nailed up CBR voice connections to beutilized for data transmission when voice is not used.

AAL - ATM Adaptation Layer layerAAL1 - Used for TDM services such as T1, DS3

AAL2 - Used for voiceAAL5 - Used for Data

A/B PON Quality of Service (QoS)


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d = d1+d2+d3

d1 - Broadcast videod2 - HDTV

d3 - VoD

N = total # of 6MHz RF channels

N = a + d

0


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VoD

PUMP

VideoApplication

Server

Tx 1490 /Rx 1310 nm

Satellite

Cable TV

Local TV

Broadcast

Broadcast

Video

Modulators

Tx 1490 nmRx 1310 nmTx 1550 nm

VideoOptical Tx

VoD/XCATV/DBS

Tx1550nm

Tx

1550nm

EDFA

WDM

OC-3/OC-12

IP GATEWAY

IP or ATMnetwork

1:32

CATV

Broadcast75 OhmCoax

IP Return

HPNA 2.0 orEthernet 10/100Base-T

BPON 1550nm CATV Solution


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BPON QoS and costs savings will appeal to service providers

BPON/EPON Comparison

EPON BPON

Layer 2 protocol IP ATM

Transport mechanism Frames Fixed cells

Speed Mb/s 1001,25010,000

1556221,250

Service providers Overbuilder MSO

ILECOverbuilder

Standard IEEE? FSANITU-T G.983.3

Upstream protocol TDMA? TDMA

Cost IP switch ATM switch

Delivery IP data, VoIP

IP Video

IP data, VoATM/IP

Video overlay


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ARCHITECTS OF AN INTERNET WORLD FTTH Fiber System Layout

BPONLIM

EDFA

Splice

Connector (SC/UPC)

Connector (SC/APC)

Included

in OLT

Includedin EDFA

--> 1490 nm

JumperE-OLTJumpers

1555 nm

Fiber Management Rack

COJumpers

MDF

OLTJumpers

ODN IFS/R

c

d

Included in WDM

1:2

Access

FTTH Optical System

--> 1490 nm--> 1555 nm

Mating


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Outside plant Optical loss BudgetFor 1555 nm, Class B

Components ean loss SD Mean + Quantity Mean SD SD^2 Unitper unit per unit 3Sigma or length sub-totalsub-total ub-total

Connectors 0.23 0.020 0.29 4 0.92 0.04 0.0016 dB

Splitter 1/2 3.39 0.028 3.48 0.00 0.00 0.0000 dB

Splitter 1/3 5.19 0.057 5.36 0.00 0.00 0.0000 dB

Splitter 1/4 6.71 0.095 6.99 1 6.71 0.09 0.0090

Splitter 1/5 6.80 0.219 7.45 0.00 0.00 0.0000

Splitter 1/6 8.50 0.140 8.92 0.00 0.00 0.0000Splitter 1/8 10.10 0.102 10.41 1 10.10 0.10 0.0103 dB

Splitter 1/12 11.83 0.187 12.40 0.00 0.00 0.0000

Splitter 1/16 13.58 0.135 13.98 0.00 0.00 0.0000 dB

Splitter 1/24 14.30 0.730 16.49 0.00 0.00 0.0000

Splitter 1/32 15.60 0.800 18.00 0.00 0.00 0.0000 dB

Lateral splices 0.039 0.031 0.13 10 0.39 0.10 0.0096 dB

Access splices 0.039 0.031 0.13 2 0.08 0.04 0.0019 dB

Mating splices 0.039 0.031 0.13 3 0.12 0.05 0.0029 dB

Jumper splices 0.039 0.031 0.13 0.00 0.00 0.0000 dB

Maintenance splices 0.039 0.031 0.13 2 0.08 0.04 0.0019 dB

Fiber

1285-1330 nm in dB / km 0.33 0.013 0.37 0.00 0.00 0.0000 dB

1480-1575 nm in dB / km 0.21 0.032 0.31 15 3.15 0.12 0.0152 dB

kfeet 49.2

Ageing cable plant 0.50 0.150 0.95 1 0.50 0.15 0.0225 dB

Total 22.04 0.27 dB

-3 SD - 2 SD -1 SD Mean + 1 SD + 2 SD + 3 SD

Optical Budget (dB) 21.22 21.494 21.77 22.04 22.31 22.59 22.86 dB

Standard Normal

Distribution Function. 0.13% 0.023 15.87% 50.00% 84.13% 97.72% 99.87%

1 or 2 sigmaassumed

satisfactory

for video

Span@ 1310 nmintroduced

in overlayODN model@1555 nm

32 split

ODN overlaybudget better

by 2.3 dBthan BPON


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Pointto Point

Feeder

PrimaryFlexibility

Point1:N split

FeederSplice

enclosure

FeederPrimary

Flexibility

Point

1:N split

Final dropBox 1:N split

Final dropBox 1:N split

Final drop

Box 1:N split

Centralized

Splitting

DistributedSplitting

C.O

C.O

C.O

Splice

enclosure

Distribution

Distribution

Distribution

Drop

Splice

enclosure

Drop

Drop

PON Outside Plant Architectures


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1-24 25-48 49-72 73-96

96 Homes Passed

Primary Flexibility

Point

36 fiber Cable

~15 km1:8

OLT

24 fiber

Cable

Greenfield 100%

Homes passed areConnected

Over Build

Connect as you addsubscribers

FP2

24

FP12

24

24

FP3

FP4

24

2424

FP5FP6

FP7

24

24

24

FP8FP9

FP10

24

FP11

24 1152 Total

Homes Passed

24 fiber Cable

~ 1 to 5 km

F11:4

Final Drop

Point

FTTH OSP Example


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HBMatthews Alcatel Confidential and Proprietary7/13/2000 26

ARCHITECTS OF AN INTERNET WORLD Objectives for PON Designs

Future-proofed OSP Network

Reliability

Scalability

Minimize network installation complexity

Pre-Stubbed Hardware & Equipment

Connector Technology (Hardware+Cable) Mass fusion splicing

Minimize up-front CAPEX investment

Defer as much CAPEX to subscriber turn-up as

possible


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ARCHITECTS OF AN INTERNET WORLD Cost Variables

ActiveActiveEquipmentEquipment

PassivePassiveInfrastructureInfrastructure

Labor &Labor &

InstallationInstallation

CO/HE

ActiveEquipmentInstallation

CO/HE

ActiveEquipmentInstallation

OS

PCab

le&E

quip

ment

Installatio

n

OS

PCab

le&E

quip

ment

Installatio

n

PON Architecture & DesignPON Architecture & Design

$


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CO

Splice enclosure/

Fiber Junction

Distribution

enclosure w/

couplers

Feeder network

144+ fiber cable

Primary

Distribution

Network

48-144 fiber cable

Secondary

DistributionNetwork

12-48 fiber cable

Drop enclosure

Drop cable

1-2 fiber cab le

Large Scale PON Network Architecture


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ARCHITECTS OF AN INTERNET WORLD SuperPON

Access Node

Feeder Drop

(90 km) (10 km)

Downstream: 2.5 Gbit/s TDM, 1.5 m

Upstream: 311 Mbit/s TDMA, 1.3 m

OLTORUs ORUs

feederrepeater

amplifiedsplitter

ATM CC ONT

Splittingfactor: 2048

ONT

SuperPON:

Alcatel research project started to explore the issues on upscaling a number of the APONparameters:

Extend range up to 100 km, extended split up to 2048

Increase DS BW to 2.5 Gbit/s, US BW to 311 Mbit/s

Use amplification to compensate for optical budget reduction due to other parameter extensions Reuse as much as possible the design blocks of Alcatels standard compliant APON chipset

Successful field trial with SuperPON protype in 3Q2000

SuperPON configuration with split of 32 and range of 20 km could do without expensive feederrepeater and amplified splitter => more cost effective multi-Gigabit APON

Local

CO

Backbone

Network

Core ATMOLT


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Conclusion

PON is a new technology that has matured

Combines best of optics and packet technologies to

support services Operators have been drivers of technology

Standards define technology

BPON is the ideal solution for broadband for the future Alcatel is a technology and product leader with the 7340

FTTU


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Acronyms

AMS Access Management SystemDBA Dynamic Bandwidth Allocation

DBS Digital Broadcast SatelliteDOCSIS Data Over Cable Service Interface Specification

DSS Digital Satellite ServiceEDFA Erbium Doped Fiber Amplifier

FSAN Full Service Access NetworkFTTB Fiber to the Business

FTTC Fiber to the Curb

FTTH Fiber to the HomeFTTN Fiber to the NodeFUNI ATM Frame User Network Interface

HFC Hybrid Fiber CoaxHPNA Home Phone line Networking Association

IAD Integrated Access DeviceMSO Multi Service Operator

NVoD Near Video on Demand

NT Network TerminalNTSC National Television Standard CommitteeODN Optical Distribution Network

OLT Optical Line TerminalONT Optical Network Termination

OSP Outside PlantONU Optical Network Unit (Multiple users)

ONT Optical Network Termination (Single user)POTS Plain Old Telephone Service

PSTN Public Switched Telephone NetworkQAM Quadrature Amplitude Modulation

QPSK Quadrature Phase Shift KeySIP Session Initiation Protocol (a VoIP protocol)

SOHO Small Business/Home OfficeVoD Video on Demand

VoDSL Voice over DSLVoIP Voice over IP

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