FTTP in Japan

1
FTTP in Japan
Yukihiro Fujimoto NTT Access Network Service
Systems Labs. OFC 2004 MA Fiber To The
Premises Monday, February 23, 2004
2
Status Broadband Market in Japan

• Significant growth of broadband access
• Reaches 13.6 million lines
• FTTP newly got 700K in 2003
• DSL4.6 M, Cable500K
• Heavy competition
• Speed competition
• DSL moves 12Mb/s - 24Mbps - 40Mbps
• All of FTTP are 100Mbps
• Subscription charge competition
• Typical DSL monthly charge
• FTTP around 40-70

3
Growth of Broadband Access in Japan
Subscribers
FTTP Subscribers
1 Million
60,000,000
DSL
0.8
10.2 M
HFC
10,000,000
FTTP
0.6
2.5 M
1,000,000
0.9 M
0.4
100,000
0.2
10,000
0
2002.6
2003.6
2001.12
2002.12
2003.12
1,000
2001.6
2002.6
2003.6
2000.6
2000.12
2001.12
2002.12
2003.12
Source Ministry of public management home
affairs, posts and telecommunications Information
communications statistics database
4
Monthly Charges For Broadband Access
(US/month)
For SOHO Users
180
160
DSL
CATV
140
FTTP
120
For Residential Users
100
80
60
40
20
0
100K
1M
10M
100M
1G bps
Access Network and ISP Subscription charges are
included. 1USD 110YEN
5
FTTP Access System

• Both P2P and PON are used for FTTP
• P2P
• Extension of 2-fiber 100BASE-FX 1000BASE-LX
• TS-1000 1-fiber (100BASE-BX10)
• Mainly for MDU and SOHO users
• PON
• BPON (G.983 series compliant)
• 100Mbps vendor specific EPON
• EPON (IEEE802.3ah) next?
• Mainly for individual home (FTTH)

6
B-FLETS Services By NTT
NTT Central Office
Business Type
P2P
100Mbps
For Business users
O/E
E/O
ISP-A
BRAS
Network Terminal Equipment
Basic Type
For SOHO Heavy users
100Mbps
Local IP NW
O/E
E/O
BRAS
BPON
Network Terminal Equipment
FLETS Office
New Family Type
100Mbps
For residential users
O/E
E/O
BRAS
P2P
Network Terminal Equipment
MDU Type
ISP-B
100Mbps
O/E
For MDU
E/O
BRAS
Shared by 8 or 16 users
7
BPON
Most of FTTH users provided by BPON today
20.5cm
2-stage splitter
OLT
622Mbps
100BASE-TX
ONU

Local IP NW
156Mbps
100BASE-TX

Wavelength Allocation
G.983.1
Upstream
Downstream
1200
1300
1400
1500
1600nm
Shared access using DBA (Dynamic Bandwidth
AllocationG.983.4)
Downstream
G.983.3
Upstream
1200
1300
1400
1500
1600nm
8
EPON System Development
EPON is one of Ethernet interface series. EPON
System consists of both std. and out of scope
specifications.
Out of scope specifications
Standardized specifications
EPON System
System functionalities for carrier service
provisioning
Basic functionalities for transmission
Ops IF

• Operation system interface
• OAMP, Test, DB-IF.
• DBA (Dynamic Bandwidth Allocation)
• Bandwidth control
• Authentication
• User/ONU registration/Deregistration
• System OS
• Private MIB, Alarm process
• System configurations
• Fault recovery, powering, cooling.
• And more .

IEEE802.1AE Need more time for specifying
technical issues
DBA/QoS
Link Security
Sys. Cntrl.
IEEE802.3ah(EFM) Technical specifications are
matured. Standard will complete June 2004.
OAM
MAC/MPCP
PHY
9
EPON System
Verification EPON system development has been
progressed. Complete by 2nd/Q, planning to deploy
in this year.
EPON OLT

• IEEE802.3ah compliant
• 1000BASE-PX20 optic. Interface
• DBA for various QoS
• Carrier grade system / OpS
• Automatic User registration / authentication

EPON ONU
1000BASE-PX20
1000BASE-T
Success of EPON depends on inter-operability
multi-vendors. Investigate PHY/MAC layer / system
layer test early this year.
10
FTTP Access Network

• Well designed fiber access network configuration
• High-density fiber plants
• 4000-fiber termination frame
• 1000-fiber feeder cable
• 200-fiber aerial cable
• The challenge is the last 100 m
• Individual installation for each home
• All work by manual

11
FTTP Access Network Configuration
Fiber Termination Frame
Aerial Section
4-Fiber ribbon
14/18 Splitter
Splitters 18/14
Aerial Closure
4000 fibers termination
OTDR
Splicing Point
OLT
FTF
Under Ground Section
Tunnel
Under Ground Closure
1000-Fiber cable
12
Challenge of Last 100m Installations

• Splicing
• Portable fusion splicer mechanical splicing
• Terminating
• Simple termination box
• Cabling
• Bending radius

Reduce the time for splicing
ONU
Simple structure of termination box
Easy handling for in-house wiring
13
Summary

• Significant growth of FTTP would be expected
• 2 Million or more lines FTTP in 2004
• Mass deployment for FTTP by PON
• BPON and EPON widely deployed
• Improvements of installation
• Reduce workload for the last 100 m installation