ftth network tendencies - anacom
TRANSCRIPT
FTTH Network Tendencies
Jürgen SeidenbergBKtel communications GmbH
Germany
Agenda
Introduction
Services Evolution
FTTH network topologies
FTTH installations
NGN FTTH networks
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Introduction
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4
Telecom Outsite Plant Lifetime
The Cabling Infrastructure is the mostly determining the CAPEX of a Telecom network
In order to achieve a reasonable ROI a long lifetime of the Cable plant is mandatory
Copper pair networks constructed to transmit 4 kHz of voice signals about 20 … 30 years ago today transport up to 100 Mbit/s (VDSL2) thanks to the consequent star topology (point-to-point network)
CATV networks have been installed in many cases > 20 years ago to carry around 20 TV + 30 FM channels and carry today FM, hundreds of TV channels and Internet services.
FTTH networks therefore should also be designed to last long, e.g. > 20 years
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Prognosis on high speed access
networks
Main capital investment flows into last mile
Wireless technologies not available for long distance / high speed
DSL based technologies and also HFC will reach a throughput limit
Expensive to refurbish last mile when the wrong choices were taken
FttH or FttP are architectures of choice:
Long term investment protection
Largest bandwidth delivered
Operational savings for large deployments
Easy to upgrade for future bandwidth demands
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Quality aspects in Telecom Networks
Seen from the Network Operator / Service Provider:
Investment
Installation efforts
Maintenance efforts
Lifetime
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“ROI
is
the issue”
Select
appropriate
technology
“The customer
ist the king”
Seen from the customer:
Good quality of all services
Speed and Reliability of data service (Internet)
Speech quality for voice services
Picture quality, content, service availability for TV services
Service Evolution
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Prediction –
How much Access Bandwidth is required ?
today
average for all Broadband Users with different kind of Data and Voice services as well as
available VOD services. Valid independent on Access Technology.
What kind
of network
to be build
with that
view on
future
bandwidth
demands?
9
Service Evolution
Telephony Services will be transmitted in the future via VoIP
Data services will continue to request higher datarate (Youtube ...)
Video services will continue to eat up the available datarate if IPTV is used without an additional RF video overlay:
Full HDTV: 1920 x 1080 ~ 9…20 Mbit/s (MPEG4)
Several streams of video (multiple displays + DVR) require many videostreams to be supported
Special functions (e.g. DVR fast forward) require a multiple (3 ~ 5) of the standard datarate
What´s next?
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Video Service Evolution on short term
(5 ~ 10 years)
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Video Service Evolution on long term
(10 ~ 25 years)
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Only fiber will be able to support all future services
Evolution of Wired Access networks
12
FTTH (P-P or PON)
DS-Rate: typ. 100-1000M
Multichannel BC-TV,
HDTV,
Video on Demand,
Voice, and… and…
FTTH
VDSL or
Cable Modem
(Docsis3.0)
DS-Rate: typ. 10-50M
Broadcast TV,
Multimedia home,
Video on Demand
Fiber deep
HFC or VDSL
ADSL or
Cable Modem
(Docsis1.0-2.0)
DS-Rate: typ. 1-16M
CATV: RF and digital TV
+ Fast Internet and
Voice
ADSL: Fast Internet and
Voice,
Video download
Traditional
HFC or ADSL
Dial up Modem /ISDN
DS-Rate: typ. 56-128k
Text based Web surfing
PSTN
switched
yesterday today
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FTTH Network Topologies
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PON: pure IP Triple Play network
IP - network
Backbone-Router
PC VoIPTV
PC VoIPTV
PC VoIPTV
PON
1550 & 1310 nm
1GbE
Optical Line
Termination (OLT)
Point to multipoint network (1:16 … 1:64)
Standards for PON: GE-PON
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IEEE 802.3ah (EFM): GE-PON
1490nm / 1310 nm bidirectional optical GE-PON
1 Gbit/s for 32 subscribers
Provisioning
TR069 or other standards
Telephony
SIP 2.0 or other standards
Standards for PON: G-PON
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ITU-T G.984: G-PON
1490nm / 1310 nm bidirectional optical G-PON ,2.4 Gbit/s for 32 (64) subscribers
Provisioning
TR069 or other standards
Telephony
SIP 2.0 or other standards
Quality factors of the pure IP PON
seen from the Network Operator
Data, telephony, radio + TV services:
Pros: Fiber network with just one fiber per PON (16 … 64 subscribers)
leaving the CO; saves space and equipment in the CO
Cons: Outdoor-location for passive optical splitter reduced granularity
Shared medium requires encryption and protection measures
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Radio + TV services:
Pros: Triply-play via pure IP-Network
Cons: IPTV headend or feeder required
IP backbone needs to be able to provide sufficient data rate capacity
Quality factors of the pure IP PON
seen from subscriber
Data and telephony services:
Pros: Good speech quality
High speed data service available
Cons: Individual requests on the different performance of the service hardly be fulfilled
since PON is a shared medium
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Radio + TV services:
Pros: pure IP inhouse network, no coaxial cable network required
Cons: reduced comfort compared to direct satellite or CATV service
IPTV set-top box required for each subscriber radio/TV/VCR
limited zapping performance
IP-Radio instead of SAT-Radio or FM-Radio
TV service with a significant delay (e.g. 5 … 10 Seconds)
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PON + RF Video Overlay
CATV
IP - network
Backbone-Router
PC VoIPTV
PC VoIPTV
PC VoIPTV
CATV & PON
1550 & 1310/1490nm
1GbE
PON Optical Line
Termination (OLT)
Point to multipoint network
RF Video Overlay OLT
Standards for PON: GE-PON
+ RF Video Overlay
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IEEE 802.3ah (EFM): GE-PON
1490nm / 1310 nm bidirectional optical GE-PON
1 Gbit/s for 32 subscribers
IEC 60728-13-1 for the RF video overlay (optional)
FTTH RF Video Overlay (in preparation)
Provisioning
TR069 or other standards
Telephony
SIP 2.0 or other standards
Standards for PON: G-PON + RF Video Overlay
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ITU-T G.984: G-PON
1490nm / 1310 nm bidirectional optical G-PON ,2.4 Gbit/s for 32 (64) subscribers
IEC 60728-13-1 for the RF video overlay (optional)
FTTH RF Video Overlay (in preparation)
Provisioning
TR069 or other standards
Telephony
SIP 2.0 or other standards
Quality factors of the IP PON + RF video
overlay seen from the Network Operator
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Radio + TV services:
Pros: low cost RF Video Overlay System instead of state of the art IPTV System
Data, telephony, Radio + TV Services:
Pros: Fiber network with just one fiber per PON (16 … 64 subscribers)
leaving the CO; saves space and equipment in the CO
Cons: Outdoor-location for passive optical splitter
reduced granularity (16 , 32, 64)
Shared medium requires encryption and protection measures
Data and Telephony Services:
Pros: Good speech quality
High speed data service available
Cons: Individual requests on the different performance of the service hardly
be fulfilled since PON is a shared medium
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Radio + TV Services:
Pros: no IP set-top box for analog TV required
FM Radio
Huge number of channels for several TVs, DVRs, …
immediate response to zapping request
undelayed reception of the content
Cons: inhouse IP-network + coax-network required
Quality factors of the IP PON + RF Video
overlay seen from the subscriber
Point to Point Network with
RF Video Overlay (single fiber)
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1GbE
Access Switch
IP - Network
RF Video Overlay OLT
Backbone Router
WDM
WDM
WDM
PC VoIPTV
PC VoIPTV
PC VoIPTV
100Mbps Optical
Ethernet
1490nm / 1310nm
RF Video
1550nm
WDM
WDM
WDM
CATV
Optical Line
Termination (OLT)
Point to Point Network
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Point –to –Point Network
+ RF-Overlay (dual fiber)
CATV
Optical
Splitter
100Mbps Ethernet
1310 / 1550nm
CATV
1550nm
PC VoIPTV
PC VoIPTV
PC VoIPTV
IP
Access Router
1GbE
Ethernet
Switch
Optical
Tansmitter
1550nm +EDFA
Standards for Ethernet PtP
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IEEE 802.3ah (EFM): Ethernet PTP (FE und GE)
100Base-BX10: 1550nm (1480nm-1580nm)/1310 nm bidirectional optical Fast Ethernet
1000Base-BX10: 1490nm (1480nm-1500nm) /1310nm bidirectional optical Gigabit Ethernet
IEC 60728-13-1
FTTH RF Video Overlay (in preparation)
Provisioning
DOCSIS-based (standard used for Cable modem)
TR069 based (standard used for DSL modem)
Telephony
SIP 2.0
Quality factors of the Point to Point + RF video
overlay seen from the Network Operator
Data and telephony services:
Pros: Each subscriber receives his own fiber
Very different data rates ( 100 Mb/s … 10 Gb/s) feasible
Large optical budget compared to PON
Good protection against vandalism and signal tapping
No outdoor location required
Cons: Increased amount of fibers in OLT ( n fibers for subsribers)
and consequently more equipment
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Radio + TV services:
Pros: low cost RF Video Overlay System instead of state of the art IPTV System
No nonlinear optical crosstalk between IP => RF video as occurring in PON
Better TV picture quality for analog TV compared to PON + RF Video Overlay
System
Data and telephony services:
Pros: Good speech quality
High speed data service available
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Radio + TV services:
Pros: no IP set-top box for analog TV required
FM Radio
Huge number of channels for several TVs, DVRs, …
immediate response to zapping request
undelayed reception of the content
Cons: inhouse IP-network + coax-network required
Quality factors of the Point to Point + RF
video overlay seen from the subscriber
FTTH Installations
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Network Upgrade in Basel/CH
Upgrade for residential area to future safe FTTH network
The challenge:
Upgrade from old cable infrastructure to a future proof network (limited installation space )
CATV + DVB-C and additional several hundred SAT-IF channels with DVB-S
Analogue TV set shall still work without any STB
How to safe the invest of the network and to be able to expand to very high data services like 100bT or GB-Ethernet ?
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Network Upgrade in Basel/CH
Upgrade for residential area to future safe FTTH network
The Solution:
Build an FTTH network with 2/4 single mode fibers P-P to each home using same duct as before coaxial branch installation
One fiber is served with the a high performance optical 1550nm TX for CATV + SAT-IF (5 .. 2.400 MHz) boosted with an EDFA
The 2nd fiber will be used for Ethernet based data traffic.
Headend Schematics for SAT-IF signals
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11,7 High Band H
12,75
High Band V
12,75
Horizontal
Vertical
10,6Ghz Oscil.
Horizontal H
2,07GHz1,1GHz
Horizontal / Vertical:
Will be selected by the SEV
V (13 V)High (22 kHz)
H (18 V)High (22 kHz)
SAT-ZF
11,7
11,837 12,266
12,480
1,88GHz1,66GHz
Transportation of the vertical and
horizontal high band transponder
signals on one fiber / coax cable Vert. H
Horiz. H
Out
12,670
10,6Ghz Oscil.
Vertical H
TWIN LNB
Astro SEV
Mixer Mixer
OUTPUT
Photo of SAT-IF headend
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The Realisation : 600 Digital TV
+ 40 Analogue TV
Satellite Dishes
Satellite Head-End
87-860Mhz
+ 950-2150Mhz
Optical Transmission
and fiber distributon
Splicing in the
Basement (using existing ducts of coaxial cable)
The Optical
Receiver
The Service
CPE in living room
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Example of CPE
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Managed Switch based
FTTH-CPE
• 100Base-BX WAN Interface
• Integrated 10/100Mbit/s
Ethernet Switch
• Virtual LAN (VLAN)
• Quality of Service / Class of
Service
• IGMP Snooping
• Bandwidth Control
• SNMP Agent (optional)
• Ultra Low Noise Cable TV
Receiver
• Diagnostics (optional)
FTTH RF-Video Overlay Project
Telekom Slovenije
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Country wide FTTH Project:
RF-Video Overlay
Ethernet IP, P-P
Services: RF-CATV: FM + 80x analogue TV channels
Up to 100bit/s Ethernet access per customer (bidirectional)
VoIP over SIP or MGCP
IP-TV
Total Number of Hubs: 74
Number of connected subscribers for phase 1: 50.000 users
2 fiber to each CPE at customer premises 1st fiber: RF on 1550nm (CATV part from BKtel)
2nd fiber: 1310/1490nm bi-directional Ethernet (IP part from Iskratel)
Central Head End in Ljubljana - longest link about 280km
Network layout FTTH project
Telekom Slowenije
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RF video overlay network
Telekom Slowenije: max. 266 km
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RF video overlay performance after 226 km
Telekom Slowenije
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Headend measurements (before optics)
5th April 2007
45464748495051525354555657585960
11
9,2
5
14
0,2
5
16
1,2
5
19
6,2
5
21
7,2
5
23
8,2
5
25
9,2
5
28
0,2
5
30
3,2
5
32
7,2
5
35
1,2
5
37
5,2
5
39
9,2
5
43
1,2
5
48
7,2
5
51
1,2
5
53
5,2
5
55
9,2
5
58
3,2
5
63
1,2
5
65
5,2
5
67
9,2
5
71
1,2
5
73
5,2
5
75
9,2
5
78
3,2
5
SNR
Head End
SNR
Performance in
Murska Sobota( after a distance
of 226km from
Head End)
SNR MurskaSobota @ BOR RF output
(after 226km)
45,0
46,0
47,0
48,0
49,0
50,0
51,0
52,0
53,0
54,0
55,0
11
9,2
5
13
3,2
5
15
4,2
5
18
9,2
5
21
0,2
5
23
1,2
5
25
2,2
5
27
3,2
5
29
4,2
5
31
9,2
5
34
3,2
5
36
7,2
5
38
3,2
5
41
5,2
5
47
1,2
5
49
5,2
5
51
9,2
5
54
3,2
5
56
7,2
5
59
1,2
5
63
9,2
5
66
3,2
5
69
5,2
5
71
9,2
5
74
3,2
5
76
7,2
5
79
1,2
5
Reihe1
Head End
Slovenje
Head End Ljubljana (Centre) for
countrywide distribution of CATV
signals
4 x exMod TX and Distribution
16 x 20EDFAs
Booster YEDFA for 4000 local
connected customers
Central Office for PtP Distribution
Slowenje
• ca. 2000 fibers/ ETSI Rack
Central Office for PtP Distribution (2)
Slowenije
CATV DistributionHub Murska SobotaHub Bezigrad
16 x 20dBm Booster EDFA connects to 1536
Customers
1x64 Splitters
City Telekom (HK) Ltd./
Hongkong Broadband Newtwork Ltd.
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Presented on FTTH Council USA, Nashville , Sept 2008 by CTI / HKBN
Company Overview
City Telekom (HK) Ltd./
Hongkong Broadband Network Ltd.
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Presented on FTTH Council USA, Nashville , Sept 2008 by CTI / HKBN
Offered Data Services
City Telekom (HK) Ltd./
Hongkong Broadband Newtwork Ltd.
Anacom Workshop FTTH 46
Presented on FTTH Council USA, Nashville , Sept 2008 by CTI / HKBN
Network Topology
City Telekom (HK) Ltd./
Hongkong Broadband Network Ltd.
Anacom Workshop FTTH 47
Presented on FTTH Council USA, Nashville , Sept 2008 by CTI / HKBN
Fiber optic backbone network
City Telekom (HK) Ltd./
Hongkong Broadband Network Ltd.
Anacom Workshop FTTH 48
Presented on FTTH Council USA, Nashville , Sept 2008 by CTI / HKBN
Inhouse Wiring for Small Buildings
City Telekom (HK) Ltd./
Hongkong Broadband Network Ltd.
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Presented on FTTH Council USA, Nashville , Sept 2008 by CTI / HKBN
Inhouse Wiring for Large Buildings
State of the art Fiber Installation in
Buildings
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Presented on FTTH Council USA, Nashville , Sept 2008 by OFS
Low Bending Loss Fiber Standards for
Installations in Buildings
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Presented on FTTH Council USA, Nashville , Sept 2008 by OFS
Inhouse Wiring for Large Buildings
NGN FTTH Networks
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PON:
10 Gbit/s GPON (shared between 32 … 64 … subscribers)
10 Gbit/s GEPON (shared between 32 … 64 … subscribers)
WDM PON (logical point to point links, each subscribers has different wavelength)
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Point to point networks:
1 Gbit/s to each subscriber (already available)
10 Gbit/s to dedicated subscribers (already available)
NGN FTTH networks
FTTH network future strategy
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The most future proof solution:
FTTH network with 2/4 single mode fibers in point-to-point topology
IP + RF Video Overlay technology for unmatched service performance
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Thank you for your attention!
Further Infos under www.bktel.com
or send email to [email protected]