Chapter Presentation FTTx · PDF fileFTTx improves efficiency by delivering cable services...
Transcript of Chapter Presentation FTTx · PDF fileFTTx improves efficiency by delivering cable services...
© 2016 Society of Cable Telecommunications Engineers, Inc. All rights reserved. scte.org | isbe.org 1
FTTX TECHNOLOGIESJuly 26, 2016 Steve Harris, Senior Director Advanced Technologies & Instruction, L&D
© 2016 Society of Cable Telecommunications Engineers, Inc. All rights reserved. scte.org | isbe.org 2
• Enabling technologies, standards and approaches that MSOS are using to deploy FTTx
• Optical Distribution Network Architectures
• Radio Frequency over Glass (RFoG) FTTx Networks
•FTTx Passive Optical Networks (PONs) GPON and EPON
• DOCSIS Provisioning of EPON (DPoE)(DPoG work is being done now)
AGENDA
Essential Knowledge for Cable Professionals™© SCTE
FTTx
Essential Knowledge for Cable Professionals™© SCTE
Why Next Gen Access Networks?• Benefits…
– High bandwidth capability to subscribers to deliver video, voice and data services
– 1 and 10 Gbps options available in DOCSIS 3.1 networks and PONs– 40 and 100 Gbps options being tested– Improved overall reliability via PNM in DOCSIS 3.1 and optics with PON– Knowledge of FTTx and DOCSIS 3.1 provides additional skills to cable
installers and engineers, which can help open the door for new opportunities
Essential Knowledge for Cable Professionals™© SCTE
Dial‐UpDOCSIS1.0 – 2.0
Maximum speeds today
DOCSIS3.1/FTTx
NextGen
* Billboard consumer speeds
DOCSIS 3.1 and FTTx Drivers
DOCSIS3.0
100 Gbps
400 Gbps
Essential Knowledge for Cable Professionals™© SCTE
What is FTTH?
Fiber to the Home, or FTTH, delivers cable services over fiber optics. FTTH is also known as Fiber to the Premises (FTTP)
• FTTH delivers video, voice and data
• Optical fiber is used instead of coaxial cable
• Energy management and conservation
• Now available in more than 15 percent of homes;more than 9 million connected in North America
• High bandwidth capability to subscribers
• Offering 100 Mbps today
• 1 and 10 Gbps options available
• 40 and 100 Gbps options being tested
Essential Knowledge for Cable Professionals™© SCTE
Benefits of FTTx
FTTx improves efficiency by delivering cable services over fiber optics.
• Fiber to the premises is extremely cost effective in rural areas
• Improved overall reliability and reduced signal egress
• No power required for active devices and battery power supplies in the outside plant (OSP)
• Backup power for consumer premises equipment becomes the responsibility of the subscriber
Essential Knowledge for Cable Professionals™© SCTE
Benefits of FTTx
FTTx has many advantages by delivering cable services over fiber optics.
• An attractive option to coax, with customer perception that fiber is more valuable
• Fiber optimizes CapEx and reduces OpEx
• Optical fiber “future proofs” networks to allow for increased bandwidth over the same installed fiber
• Knowledge of FTTx provides additional skills to cable installers and engineers, which can help open the door for new opportunities
Essential Knowledge for Cable Professionals™© SCTE
Drivers for FTTH
Question: In your opinion, what technologies are driving FTTH?
• IP video services like IPTV
• Over the top (OTT) services like video consumption
• Increased use of HD video
• UHD 4K video w/ HDR
• Internet of Things (IoT)
© 2016 Society of Cable Telecommunications Engineers, Inc. All rights reserved. scte.org | isbe.org 10
FIBER 101
• ITU 9 micron single mode (ITU-T G.652)• Single Mode Ribbon Fiber (12,24)• CWDM overlay (ITU-T G.694.2)• ITU-T G.657.B3 5 mm bending radius• ITU-T G.652.D is a reduced water peak • ITU-G.671 is the transmission
characteristics • ITU-T 598-D Fiber Colors• SC/APC Connectors• RF in the THz• DWDM in the core/agg network
Optical Bands
Fiber Optic Patch SC/APC
Weak Peak Chart
Essential Knowledge for Cable Professionals™© SCTE
What is Fiber to the Node (FTTN)?
Fiber to the Node (FTTN) is a broadband network architecture that uses optical fiber from the headend or hub site to a node in the outside plant (OSP). FTTN is also known as Hybrid Fiber Coax (HFC).
NodeHeadend or Hub
Coax Tap
Subscriber
Coax
Cable Modem
Drop
Tx
Rx
WDM
1310 nm ‐>
<‐ 1550 nm
Essential Knowledge for Cable Professionals™© SCTE
What is Fiber to the Curb (FTTC)?
Fiber to the Curb (FTTC) is a broadband network architecture that uses optical fiber from the headend or hub site to a fiber distribution cabinet (FDC) or Network Extension (NetX) cabinet in the outside plant (OSP).
Headend or Hub
MDU
Coax Tap
Network Extension (NetX)
Drop
Tx
Rx
WDM
1310 nm ‐>
<‐ 1550 nm
Essential Knowledge for Cable Professionals™© SCTE
What is Fiber to the Business (FTTB)?
Fiber to the Business (FTTB) is a broadband network architecture that uses optical fiber from the headend or hub site to a business.
Headend or Hub
Businesses
Fiber Distribution
Cabinet (FDC)
Tx
Rx
WDM
FDC
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What is Fiber to the Multiple Dwelling Unit (FTTM)?
Fiber to the Multiple Dwelling Unit (FTTM) is a broadband network architecture that uses optical fiber from the headend or hub site to an MDU.
Headend or Hub
MDUs
Fiber Distribution
Cabinet (FDC)FDC
Tx
Rx
WDM
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What is Fiber to the Premises (FTTP) and Fiber to the Home (FTTH)?
Fiber to the Premises (FTTP) or Fiber to the Home (FTTH) is a broadband network architecture that uses optical fiber from the headend or hub site to subscriber.
Fiber Distribution
Cabinet (FDC)
Optical tap
Subscriber or premise
Headend or Hub
Tx
Rx
WDM
Essential Knowledge for Cable Professionals™© SCTE
EPON
100 Gbps Ethernet PON WG Started Work
FTTx Evolution
2010
20052000
2010
3.1
GPON
1 Gbps GEM PON
EPON
10 GbpsEthernet PON
EPON
1 Gbps Ethernet PON
RFoG
SCTE 174 FTTx Standard
10 Gbps in the Downstream and up to
10 Gbps in the Upstream
2015
RFOG
10 Gbpsvia DOCSIS 3.1
Essential Knowledge for Cable Professionals™© SCTE
FTTH for Cable Networks: Comparison of RFoG, GPON, & EPON
GPON (ITU‐T G.984)• 2.488 Gbps down and 1.244 Gbps upstream• G.984.6 adds reach extension (up to 60 km)
XG‐PON1 (ITU‐T G.987)• Not backward compatible with GPON• WDM Coexistence (parallel networks) • 10 Gbit/s down and 2.4 Gbit/s upstream
NG‐PON2 (ITU‐T G.989)• Not backward compatible (GPON or XG‐PON1)• 2.4G x 2.4G, 10G x 2.4G, 10G x 10 Gbps• Time and wavelength division multiplexed passive optical
network (TWDM‐PON)• Defines use of 4 or 8 wavelengths
Radio Frequency over Glass (RFoG) SCTE 174 2010• RFoG is a media conversion PON technology• DOCSIS is the data technology• Supports existing cable practices, systems• Coexists with data/IP PON technologies
e.g., EPON, GPON
(Shared Media Standards) EPON (IEEE 802.3ah)• 1 Gbps Symmetrical10G‐EPON (IEEE 802.3av)• Define Backward Compatibility with EPON• 1 Gbit/s Symmetrical• 10 Gbit/s down and 1 Gbps upstream• 10 Gbit/s SymmetricalNG‐EPON (Next Generation EPON)• Studies underway to increase capacityIEEE Point‐to‐Point Standards• 1 Gbit/s Optical Ethernet (IEEE802.3z)• 10 Gbit/s Optical Ethernet (IEEE802.3ae)• 40 Gbit/s Optical Ethernet (IEEE802.3ba)• Scaling tools CWDM, DWDM, and AWG
Source: M. Emmendorfer, “Comparing IEEE EPON & FSAN / ITU-T GPON Family of Technologies,” SCTE Cable-Tec Expo 2014
© 2016 Society of Cable Telecommunications Engineers, Inc. All rights reserved. scte.org | isbe.org 18
FTTX WAVELENGTHS
1260
1280
1300
1320
1340
1360
1480
1500
1520
1540
1560
1580
1600
10 Gig EPON US1270 ± 10 nm
1575
10 Gig EPON DS1577 ‐2/+3nm
16201610
PrimaryRFoG US1610 nm
1590
10 Gig NG‐PON2 DS
152510 Gig NG‐PON2 US1524 – 1544 nmAlt. RFoG US
1310 nm RF Overlay DS&
RFoG DS1550 nm1 Gig EPON US
1310 ± 50 nm
1 Gig EPON DS1490 ± 10 nm
Essential Knowledge for Cable Professionals™© SCTE
ODN vs. HFC
Essential Knowledge for Cable Professionals™© SCTE
PON Central Split Architecture• Preferred architecture by
cable operators
• Headend or hubsite contains Tx and Rx lasers
• Phantom 1:2 split for service group resizing
• OLT used for 1GE‐PON and 10GE‐PON
• 32 sub PON service area
• ODN
• 20 km optical fiber
• 1:16 to 1:128 Splitter
• Optical taps
• Optical drops
• ONU or RFoG ONU at subscriber
Optical Tap
1:32or
1:64
Subscriber
PON Service Area
1:N
Optical Line Terminal
(E‐PON only)
Optical Distribution Network (ODN)
WDM
Rx
Tx
Breaking it Down
Service Group Sizing Splitter‘Phantom Splitter”
Optical Splitter/Coupler
R‐ONU/ONU
EDFA is required for RFoG / R‐ONU
Essential Knowledge for Cable Professionals™© SCTE
PON Distributed Split Architecture
• Headend or hubsite contains Tx and Rx lasers
• Phantom 1:2 split for service group resizing
• OLT used for 1GE‐PON and 10GE‐PON
• 32 sub PON service area
• ODN
• 20 km optical fiber
• 1:8 split feeds 1:4 splits
• Optical taps
• Optical drops
• ONU or RFoG ONU at subscriber
1:8
PON Service Area
1:4
Optical Distribution Network (ODN)
Optical TapWDM
1:N
Rx
Tx
Breaking it Down
Another PON architecture, not a preferred approach.
Optical Line Terminal
(E‐PON only)
R‐ONU/ONU
Optical Splitter/Coupler
1:4
Essential Knowledge for Cable Professionals™© SCTE
PON Distributed Tap Architecture
• Headend or hubsite contains Tx and Rx lasers
• Phantom 1:2 split for service group resizing
• OLT used for 1GE‐PON and 10GE‐PON
• 32 sub PON service area
• ODN
• 20 km optical fiber
• Eight 1:4 splitters
• Optical taps
• Optical drops
• ONU or RFoG ONU at subscriber
R‐ONU/ONU
Optical Distribution Network (ODN)
Headendor Hub Rx
Tx
drop1:4
PON Service Area
1:NWDM
Breaking it Down
Another PON architecture, not a preferred approach.
Optical Line Terminal
(E‐PON only)
TAP #1
TAP #2
TAP #3
TAP #4
TAP #8
drops
Essential Knowledge for Cable Professionals™© SCTE
HFC vs RFoG
The 1610 nm wavelength is used by operators that offer, or intend to offer, G-PON or E-PON overlays to their system.
NetX/FDC
OpticalTaps
R-ONU
R-ONU
CMTSEdge QAMs
CM
OSS / HUB HFC/OSP/ODN Subscriber
R-ONU
1550 ->
<- 1610
1550/1610
1310/1550
100 Mbps DOCSIS
Voice
R-ONU
MDU/Business
CM
1310 nm HFC Tx
1:32 to 1:128Optical Splitter/Coupler
DOCSISFrames
DOCSISPackets
1550/1610
1550/1610
1310 ->
<- 1550
CM
CM
MicroNode
1610 nm RFoG Rx
1550 nm HFC Rx
RFoGEDFA W
DM
COMBINE
1550 nm RFoG
RF Amplifiers
1:2
10 to 20 km
Essential Knowledge for Cable Professionals™© SCTE
Subscriber transition plan from HFC to FTTH
(DNS, DHCP, SNMP,
dTFTP/TFTP, Syslog, ToD)
CMTSEdge QAMs
1310 nm HFC1550 nm RFoG/E-PON Overlay
CM
1550 nm HFC1610 nm RFoG
COMBINE
OSS / HUB HFC/OSP/ODN Subscriber
1310/1550
100 Mbps DOCSIS
OLT
1490 nm / 1310 nm E-PON 1577 nm / 1270 nm 10GE-PON
DPoE
Voice
RFoGEDFA MDU/Business
<- 1610/1310/1270
NetX/FDC
OpticalTaps
ONU
ONU
R-ONU
1550/1490/1577 ->
1550/1610
1490/1310
1577/1270
10 Gbps
1 Gbps
300 Mbps DOCSIS
ONU
CM
1:32 or 1:64Optical Splitter/Coupler
Ethernet and DOCSISFrames
DOCSISFrames
1:N
WDM
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RFoG
Essential Knowledge for Cable Professionals™© SCTE
• RF signals can pass through; air, coaxial cable and fiber optic strands
– RFoG can be viewed as “coaxial glass”, since only one strand is used for both forward & return paths, but on different wavelengths
• RFoG is a standard developed by the SCTE as SCTE 174 in 2010 to address the use of optical fiber to the premises
– Allows reuse of headend and consumer premises equipment
• RFoG spans from the headend, or hub, directly to the subscriber and use the same modulation schemes as HFC networks
What is RFoG?Radio Frequency over Glass
Breaking it Down
ONU
ONU
R-ONU
1550/1610
R-ONU
MDU/Business
CM
1550/1610
1550/1610
CM
CM
MicroNode
OpticalTap
Essential Knowledge for Cable Professionals™© SCTE
• Greenfield is less expensive than new HFC
• CapEx is spread across plant (60%) and subscriber (40%)
• Coaxial has 140 times the loss of fiber
• An economical solution for rural areas
• Typically lower maintenance costs – no yearly sweep and no need for RF amplifiers approximately every 1000’
• Lower power needs, by as much as 75% in most cases, and some claim as much as 90%
• Typically, there are fewer trouble calls because there are no active devices from the headend/node
• Leakage in the downstream and ingress noise in the upstream is greatly reduced, if not eliminated
RFoG Benefits
Essential Knowledge for Cable Professionals™© SCTE
• Preserves operator’s investments
• Uses existing CMTS, laser transmitters, return path receivers, DOCSIS modems
• Uses current business processes and procedures for all services
• Supports DOCSIS 1.0 through 3.1
• Seamless upgrade for customers and operators
• Other than the Passive Optical Network (PON) side, the same network architecture and initialization procedures in the headend/node and customer location are used
• Use additional wavelengths for PON overlay
Even more RFoG Benefits!
Essential Knowledge for Cable Professionals™© SCTE
SCTE/ISBERadio Frequency over Glass (RFoG), SCTE standard 174 2010
OpticalTaps
WDM
HUB ODN Subscriber
1:32
10 to 20 km
1:2Tx
Rx
EDFA
R-ONU
1550/1610
300 MbpsDOCSIS
R-ONU
1550/1610
300 MbpsDOCSIS
DOCSISFrames
• Point to Multipoint (P2MP)
• 10 to 20 km
• 1550, 1610 (PON co‐exist) and 1310 nm
• 1:32 to 1:128 splitter option
• RF US AM/FM return
• Speed determined by DOCSIS
• Uses existing back office and subscriber equipment
• SCTE recommended budget is 25 dB
• EDFA used to compensate for ODN losses
• Gateway to Ethernet PONs
Breaking it Down
1:2
Essential Knowledge for Cable Professionals™© SCTE
RFoG Metrics
ONU
1550 nm
1610 nm>-24 dBm
COMBINE
HUB ODN SUB
R-ONU
10 Gbps
EDFA+26 dBm
1:2-3.5 dB
R-ONU
WDM
1:32-15.9 dB
CM
-3 dBm Rx
+3 dBm Tx
17 dBmV +/- 3 dB Rx
+33 dBmV Tx
SCTE -25 dB ODN LOSS
-3.5 dB
20 km x .18 = -3.6 dB
-1.2 dB
3.5 + 3.5 + 3.6 + 15.9 + 1.2 + 2 dB = 29.7 dB
Essential Knowledge for Cable Professionals™© SCTE
EPON/GPON
Essential Knowledge for Cable Professionals™© SCTE
IEEE Ethernet Passive Optical Network (E‐PON) or Gigabit EPON (GE‐PON)
Institute of Electrical and Electronics Engineers (IEEE) or Ethernet in the First Mile (EFM) standard for using Ethernet 802.3 to 802.3ah‐2004 packets in a PON.
• Point to Multipoint (P2MP)
• 10 and 20 km spans
• G.652 fiber
• RF overlay (CATV analog video) possible
• 1:32, 1:64 splitter options
• Downstream, 10/100 Mbps, 1.244 Gbps, 1490 nm
• Upstream, 10/100 Mbps, 1.244 Gbps, 1310 nm
• Symmetrical or asymmetrical
Breaking it Down
1490 nm / 1310 nm E-PON
OpticalTaps
ONU
ONU
WDM
HUB ODN Subscriber
1490/1310
1 GbpsOLT
DPoE
1:32 or 1:64
1490/1310
1 Gbps
20 km
EthernetFrames
Essential Knowledge for Cable Professionals™© SCTE
IEEE Gigabit Ethernet Passive Optical Network (10GE‐PON)
Institute of Electrical and Electronics Engineers (IEEE) or Ethernet in the First Mile (EFM) standard for using Ethernet 802.3 to 802.3av packets in a PON.
• Point to Multipoint (P2MP)
• 10 and 20 km spans
• G.652 fiber
• RF overlay (CATV analog video) possible
• 1:32, 1:64, 1:128 and 1:256 splitter options
• Downstream, 10/100 Mbps, 1 /10 Gbps, 1577 nm
• Upstream, 10/100 Mbps, 1/10 Gbps, 1270 nm
• Symmetrical or asymmetrical 10 GE‐PON optical spectrum allocation for coexistence between 1 GE‐PON, 10G‐EPON and RFoG!
Breaking it Down
1577 nm / 1270 nm 10GE-PON
OpticalTaps
ONU
ONU
WDM
HUB ODN Subscriber
1577/1270
10 GbpsOLT
DPoE
1:32 or 1:64
1577/1270
10 Gbps
20 km
EthernetFrames
Essential Knowledge for Cable Professionals™© SCTE
DPoE
HFC vs. E‐PON
WDM
Headend/HUB
Amplifiers
Fiber Distribution Hub/Cabinet1xN
Subscribers
CMTSEdge QAMs
1490 nm / 1310 nm1577 nm / 1270 nm
OLT
1550 nm
1310 nm
HFC Node
COMBINE
CM
Coax Tap
Optical Tap
EthernetFrames
HFC/ODN
Back Office(DNS, DHCP, SNMP, TFTP,
Syslog, ToD)
Tx
Rx
E‐PON uses an optional RF overlay at a wavelength of 1550 nm.10 GE‐PON uses a 1577 nm downstream and a 1270 nm upstream
DOCSISFrames
10 Gbps1577 / 1270
R-ONU
ONU
R-ONUPass-thru
ONU
ONU
Essential Knowledge for Cable Professionals™© SCTE
RFoG Compatibility with E‐PON and 10GE‐PON
(DNS, DHCP, SNMP,
dTFTP/TFTP, Syslog, ToD)
NetX/FDC
OLT
1490 nm / 1310 nm E-PON 1577 nm / 1270 nm 10GE-PON
OpticalTaps
ONU
ONU
CMTSEdge QAMs
1310 nm HFC1550 nm RFoG
CM
1550 nm HFC1610 nm RFoG
COMBINE
OSS / HUB HFC/OSP/ODN
Migration to E-PON and 10 GE-PON uses the same passive fiber network
Subscriber
R-ONU
1550/1490/1577 ->
<- 1610/1310/1577
1550/1610
1490/1310
1577/1270
1310/1550
10 Gbps
1 Gbps
300 Mbps DOCSIS
100 Mbps DOCSIS
DPoE
Voice
ONU
MDU/Business
CM
RFoGEDFA
1:16 or 1:32Optical Splitter/Coupler
Ethernet and DOCSISPackets
DOCSISPackets
1:2
R-ONU
R-ONU
Pass-thru Port
1577/1270
10 Gbps
WDM
5 – 1000 MHz
Essential Knowledge for Cable Professionals™© SCTE
EPON Components – Optical Line Terminal (OLT)
OLT ODN
• Connects the hub to the ODN and ONU
• Time reference for the network
• Allocates bandwidth to the ONUs
– Multipoint Control Protocol (MPCP)
– Dynamic Bandwidth Algorithm (DBA)
• Performs initial and periodic ranging of ONUs
• Controls ONU registration
FDC Optical Splitter Optical Tap ONU
Essential Knowledge for Cable Professionals™© SCTE
EPON Components ‐ Optical Distribution Network (ODN)
OLT ODN
• The access network for PON and RFoG
• Contains the FDC/FDH or V‐HUB
• Optical splitters used to provide split options
• Optical Taps
FDC Optical Splitter Optical Tap ONU
Essential Knowledge for Cable Professionals™© SCTE
EPON Components ‐ Fiber Distribution Cabinet
OLT ODN
• The fiber distribution cabinet (FDC) or fiber distribution hub (FDH) or virtual Hub (V‐Hub)
• Optical splice trays
• Optical bulk head
• Optical splitters
• V‐Hub is active and may contain EDFA’s for RFoG technologies
FDC Optical Splitter Optical Tap ONU
Essential Knowledge for Cable Professionals™© SCTE
EPON Components ‐ Optical Splitters
OLT ODN
• Optical splitter is used in different architectures
– 1:32
– 1:64
– 1:128
– 1:256
FDC Optical Splitter Optical Tap ONU
Essential Knowledge for Cable Professionals™© SCTE
EPON Components ‐ Optical Tap
OLT ODN
• Similar to an HFC coaxial tap
• Passive optical tap
• Also known as a Multiport Service Terminal (MST) or Network Access Point (NAP)
• SC/APC Female bulkhead
FDC Optical Splitter Optical Tap ONU
Essential Knowledge for Cable Professionals™© SCTE
EPON Components ‐ Optical Network Unit
OLT ODN
• ONU synchronizes with the OLT through the time stamps of the downstream control frames
• ONU waits for a discovery gate frame
• ONU performs discovery processing, including ranging, obtaining an LLID, and requesting bandwidth
• Once registered, ONUs can send data only in the allocated time slots
FDC Optical Splitter Optical Tap ONU
Essential Knowledge for Cable Professionals™© SCTE
• Point to Multipoint (P2MP)
• 20 km
• 1:32 splitter option
• ATM
• Downstream, 1550 nm analog, 1490 nm digital
• Upstream, 1310 nm digital
• ITU‐T G.984 G‐PON is the current standard for G‐PON networks.
ITU‐T G.982 PON
ITU‐T G.982 PON developed in the early 1990s, became a standard in 1996.
Passive Optical Network
WDM
1:32Split
Optical Distribution Network20 km Distance Limit
GPONOLT
Fiber
Subscriber
Fiber Distribution Cabinet
ONT
TapDrop
Breaking it Down
GEMFrames
Essential Knowledge for Cable Professionals™© SCTE
• Point to Multipoint (P2MP)
• 20 km
• G.652 fiber
• 1310, 1490 and 1550 nm wavelengths
• 1:32 splitter option
• ATM
• Security method is churning
• Downstream 1550 nm analog, 1490 nm digital, 622 Mbps (OC‐12)
• Upstream 1310 nm digital, 155 Mbps (OC‐3)
ITU‐T G.983 A‐PON B‐PON
ATM PON used ATM cells, later G.983 was finalized as Broadband PON with support for Ethernet
Passive Optical Network
WDM
1:32Split
Optical Distribution Network20 km Distance Limit
Fiber
Subscriber
Fiber Distribution Cabinet
ONT
TapDrop
Breaking it Down
GPONOLT
GEMFrames
Essential Knowledge for Cable Professionals™© SCTE
• Point to Multipoint (P2MP)
• 20 km to 60 km (latter provided via ITU‐T G.984.6 GPON reach extension standard)
• G.652 fiber
• 1:32 and 1:64 splitter options
• SONET and Ethernet can be sent via G‐PON encapsulation method (GEM)
– ATM removed from G‐PON
• Enhanced security (G.984.3)
• Downstream 2.488 Gb/s (also specifies 155, 622, & 1.244 Gb/s rates), 1490 and 1550 nm
• Upstream 1.244 Gb/s, (also specifies 155, 622 Gb/s rates), 1310 nm
• Asymmetrical (2.488 Gb/s downstream, 1.244 Gb/s upstream) most widely deployed
– Examples: Verizon FiOS, Cox Communications, and most European and South American MSOs
ITU‐T G.984 G‐PONGigabit‐capable Passive Optical Network
Essential Knowledge for Cable Professionals™© SCTE
NG‐PON1/XG‐PON(ITU‐T G.987)• Not backward compatible
with GPON• WDM Coexistence (parallel
networks) • 10 Gb/s down and 2.4 Gb/s
up
ITU‐T G.987 NG‐PON, 10G‐PON/XG‐PONNext Generation, Passive Optical Network (NG‐PON) or 10 Gigabit PON.
WDM
Single Fiber
SeparateLambdas
2.5G x 1.25GGPON (ITU G.984.5)
10G x 2.5GXG-PON1 (ITU G.987)
10G x 10GNG-PON2 /
TWDM-PON (ITU G.989)
Optical NetworkTerminal (ONT)
1 or all OLTsmust remainin service as
long as 1 ONTis in serviceand service
tier is offered.
R-ONU
R-ONU
R-ONU
R-ONU
R-ONU
R-ONU
GPON2.5G x 1.2G
GPON2.5G x 1.2G
XG-PON110G x 2.5G
XG-PON110G x 2.5G
NG-PON210G x 10G
NG-PON210G x 10G
NG‐PON2/XG‐PON2 (ITU‐T G.989)• Not backward compatible with GPON nor with XG‐PON1• 2.4 Gb/s x 2.4 Gb/s, 10 Gb/s x 2.4 Gb/s, 10 Gb/s x 10 Gb/s per customer (40 Gb/s for entire network with
WDM on 4 wavelengths• Time and wavelength division multiplexed passive optical network (TWDM‐PON) • Defines use of 4 or 8 wavelengths
Essential Knowledge for Cable Professionals™© SCTE
PON Metrics
ONU
1490 nm / 1577 nm+2 dBm
HUB ODN SUB
ONU
10 Gbps
1:2-3.5 dB
R-ONU
WDM
1:32-15.9 dB
> -27 dBm Rx
> +2 dBm Tx
-29 dB ODN Loss
-3.5 dB
20 km x .18 = -3.6 dB
-1.2 dB
3.5 + 3.5 + 3.6 + 15.9 + 1.2 + 2 dB = 29.7 dB
OLT
1310 nm /1270 nm> - 27 dBm
Essential Knowledge for Cable Professionals™© SCTE
PON SummaryStandard Distance Split Bandwidth
(DS/US) Protocol Video Wavelengths
PON ITU-G.982 20 km 32 10 Mbps / 10 Mbps
SONET/SDH,ATM, T1/E1 n/a 1550 nm DS
1310 nm US
A-PON ITU-G.983 20 km 32 622 Mbps / 155 Mbps ATM n/a 1550 nm DS
1310 nm US
B-PON ITU-G.983 20 km 32 622 Mbps / 155 Mbps
POTS, ISDN, SONET/SDH,
ATM, Ethernet, T1/E1
RF Overlay1550 nm RF DS
1490 nm DS1310 nm US
G-PON ITU-G.984 20 km 32 and 64 2.488 Gbps / 1.244 Gbps GEM Data Only
1550 nm RF DS 1490 nm DS1310 nm US
NG-PON1XG-PON1 ITU-G.987 20 to 60 km 32 and 64 10 Gbps /
2.5 Gbps GEM RF Overlayw/ WDM
1577 nm DS1270 nm US
NG-PON2TDWM-PON ITU-G.989 20 to 60 km 32, 64, 128
and 2562.488 –10 Gbps XGEM RF Overlay
w/ WDM
1596-1603 nm DS 1524-1544 nm US
WideE-PON /GE-PON
IEEE 802.3ah 10 to 20 km 32 and 64 1.244 Gbps Ethernet IP 1490 nm DS
1310 nm US
10GE-PON IEEE 802.3av 10 to 20 km 32, 64, 128, 256
and beyond 10 Gbps Ethernet IP 1577 nm DS1270 nm US
RFoG SCTE 174 20 km 32, 64 and 128 Depends on DOCSIS DOCSIS QAM/FM
1550 nm DS1310 nm US non-
PON1610 nm US PON
1
2
3
Essential Knowledge for Cable Professionals™© SCTE
DPoE
Essential Knowledge for Cable Professionals™© SCTE
What is DPoE?
“DOCSIS Provisioning of EPON (DPoE) specifications are a joint effort of Cable Television Laboratories (CableLabs), cable operators, vendors, and suppliers to support EPON technology using existing DOCSIS‐based back office systems and processes. DPoEv2.0 specifications augment the DPoE v1.0 specifications to provide requirements for additional service capabilities and corresponding provisioning and network management capabilities.”
DOCSIS® Provisioning of EPON (DPoE™) Specifications create an architecture and serve as necessary specifications for enabling Ethernet Passive Optical Network (EPON) equipment to be provisioned using existing DOCSIS‐based provisioning systems and policies, and to provide network services over EPON access networks to business customers.
From the Specification Document
Essential Knowledge for Cable Professionals™© SCTE
DPoEv1.0 Specifications
MULPISpecifications for support of a subset of DOCSIS MULPI functionality plus EPON requirements
MEFSpecifications for MEF services added to DOCSIS stat configuration provisioning model
Ethernet OAMExtensions beyond IEEE 802.3ah and IEEE 802.3av OAM requirements
DEMARCSpecification for automatic configuration of demarcation device
ArchitectureDefines the overall services architecture for DPoE Network Security (SEC)
Provides transparent support of DOCSIS device authentication, code verification and additional security
IPNE Best practices and requirements for IP network element management and operations
OSSI Specs for support of a subset of DOCSIS 3.0 OSSI functionality with additional EPON
Requirements
PHYOptions within EPON declared mandatory and
adds additional requirements
DPoE v1.0 Specifications DPoE v1.0
Specifications
Essential Knowledge for Cable Professionals™© SCTE
Overall Architecture Slide
HUB
Coax with RF amplifiers and RF taps
Fiber Distribution Hub/Cabinet1x32
Subscribers
HFC Fiber
HFC Node CM
Coax Tap
Optical Tap
EthernetPackets
HFC/ODN
Back Office(DNS, DHCP, SNMP, TFTP,
Syslog, ToD)
1490 nm / 1310 nm (1 G)
1577 nm / 1270 nm (10 G)
DOCSISFrames
OLT
DML
VCM
VCM
DPoE 1 Gbps1490 / 1310
CMTSEdge QAMs
1550 nm
1310 nmTx
Rx
WDM
COMBINE
OSS
10 Gbps1577 / 1270
ONU
ONU
10 Gbps1577 / 1270
R-ONU
ONU
R-ONUPass-thru
NOC
Essential Knowledge for Cable Professionals™© SCTE
Key Components of DPoE System
IPNetwork
ONU
OLT
DML
VCM
DPoEBack Office(DNS, DHCP, SNMP, TFTP, Syslog, ToD)
DOCSIS OSS
E‐PON ONU
ONU
ONUONU
MDUBusiness
SDU
© 2016 Society of Cable Telecommunications Engineers, Inc. All rights reserved. scte.org | isbe.org 56
Summary• FTTx deployments are underway now.• The main technologies will be RFoG, EPON and
GPON. Many operators starting with RFoG, similar to HFC. Using RFoG pass-thru, operators will transition to PON style network.
• DPoE and DPoG allow MSOs to use their back office provisioning systems.
© 2016 Society of Cable Telecommunications Engineers, Inc. All rights reserved. scte.org | isbe.org 57
Appendix
© 2016 Society of Cable Telecommunications Engineers, Inc. All rights reserved. scte.org | isbe.org 59
FTTx: Friend or Foe?
Ethernet PON
Carrier Ethernet Networks
CWDM Advanced Fiber
Networks
Cable’s Fiber to the Home
CWDM/DWDM ‐Bandwidth Demand
Metro EOptical Networks
LIVE LEARNING WEBINARS
© 2016 Society of Cable Telecommunications Engineers, Inc. All rights reserved. scte.org | isbe.org 60
CAREER PROGRESSION
© 2016 Society of Cable Telecommunications Engineers, Inc. All rights reserved. scte.org | isbe.org 61
CWDMGrid
© 2016 Society of Cable Telecommunications Engineers, Inc. All rights reserved. scte.org | isbe.org 62
Fiber Colors