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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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Alcatel Confidential and Proprietary5/9/02 2
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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Alcatel Confidential and Proprietary5/9/02 3
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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Alcatel Confidential and Proprietary5/9/02 4
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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Alcatel Confidential and Proprietary5/9/02 5
ARCHITECTS OF AN INTERNET WORLD
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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Alcatel Confidential and Proprietary5/9/02 6
ARCHITECTS OF AN INTERNET WORLD
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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Alcatel Confidential and Proprietary5/9/02 8
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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Alcatel Confidential and Proprietary5/9/02 9
ARCHITECTS OF AN INTERNET WORLD
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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Alcatel Confidential and Proprietary5/9/02 10
ARCHITECTS OF AN INTERNET WORLD
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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Alcatel Confidential and Proprietary5/9/02 11
ARCHITECTS OF AN INTERNET WORLD
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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Alcatel Confidential and Proprietary5/9/02 12
ARCHITECTS OF AN INTERNET WORLD
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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Alcatel Confidential and Proprietary5/9/02 13
ARCHITECTS OF AN INTERNET WORLD
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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Alcatel Confidential and Proprietary5/9/02 14
ARCHITECTS OF AN INTERNET WORLD
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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Alcatel Confidential and Proprietary5/9/02 15
ARCHITECTS OF AN INTERNET WORLD
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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Alcatel Confidential and Proprietary5/9/02 16
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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Alcatel Confidential and Proprietary5/9/02 17
ARCHITECTS OF AN INTERNET WORLD
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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Alcatel Confidential and Proprietary5/9/02 18
ARCHITECTS OF AN INTERNET WORLD
d = d1+d2+d3
d1 - Broadcast videod2 - HDTV
d3 - VoD
N = total # of 6MHz RF channels
N = a + d
0
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Alcatel Confidential and Proprietary5/9/02 19
ARCHITECTS OF AN INTERNET WORLD
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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Alcatel Confidential and Proprietary5/9/02 21
ARCHITECTS OF AN INTERNET WORLD
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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Alcatel Confidential and Proprietary5/9/02 22
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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Alcatel Confidential and Proprietary5/9/02 23
ARCHITECTS OF AN INTERNET WORLD
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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Alcatel Confidential and Proprietary5/9/02 24
ARCHITECTS OF AN INTERNET WORLD
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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Alcatel Confidential and Proprietary5/9/02 25
ARCHITECTS OF AN INTERNET WORLD
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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Alcatel Confidential and Proprietary5/9/02 27
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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Alcatel Confidential and Proprietary5/9/02 28
ARCHITECTS OF AN INTERNET WORLD
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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Alcatel Confidential and Proprietary5/9/02 29
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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ARCHITECTS OF AN INTERNET WORLD
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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Alcatel Confidential and Proprietary5/9/02 32
ARCHITECTS OF AN INTERNET WORLD
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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