Joint ITU/IEEE Workshop on Ethernet - Emerging
Applications and Technologies
(Geneva, Switzerland, 22 September2012)
FTTx in China
– Current Status and Future Prospects
Chengbin Shen,
R&D Director,
Shanghai Research Insitute of China
Telecom
shencb@sttri.com.cn
Geneva, Switzerland, 22 September 2012
Increasing number of BB subs in China
and Technology Evolution
•
•
•
The migration from ADSL2+ to FTTx or even to FTTH is
steadily accelerating
In early years, subs not served with ADSL were provided with
Ethernet based FTTB; Currently, subs not served with ADSL
are provided with PON-based FFTx
China BB sub installed base is estimated to reach 180 million
active ports by 2014
180
45%
156
160
40%
140
35%
126
115
120
103
100
100
40
52
38
20%
67
66
60
25%
84
83
80
30%
15%
52
37
10%
26
20
5%
0
0%
2005
2006
total Subs (DSL+FTTX)
2007
2008
ADSL Subs
2009
Growth Rate (total)
2010
2011
Growth Rate (ADSL)
CTC BB sub Growth
83.7M in the middle of 2012
The trend is clearly towards increase in BB
sub count
Relatively low BB penetration in China
•
China's Broadband Household penetration
(~30%; end of 2011) is lower than that of
developed coutries, and is on pair with the
world’s average value, but only slightly higher
than average for developing countries;
•
Great development potential and market
opportunity!
Year
China's BB
household
penetration
2010
23.7
2011
29.5
Broadband Technology Migration
Milestones in China
Before 2007,
ADSL/ADSL2+ was the
dominant technology
100M
In 2007, CTC and other
main operators started
massively deployment of
fiber access based on
"Fiber-IN & Copper-OUT"50M
strategy after China
Telecom achieved the allaround and large-scale
IOP of EPON
10M
GPON and 10G-EPON
began deployment after
1G-EPON became mass
deployed
All these technologies will coexist in CTC access network
10G-EPO
GPON
EPON
ADSL2+
ADSL
2000
2005
2007
2009 2010
EPON in CTC network deployments
scenarios
Based on comprehensive analysis on TCO，bandwidth
capbility, technol. Trend, etc., China Telecom adopt different
deployment mode to local conditions:
Residential customer and
urban areas
 Green field (new area)
• Stop deploying feeder &
distribution copper wires
• FTTB (PON) + Ethernet before
2010; FTTH since 2010
 Brown field (existing area)
• (preferred) FTTB (PON)＋DSL
with copper wire length <
500m before 2010
• Bandwidth target: 8-20Mb/s
• some residential cell were
upgraded with FTTH since
2010
Business buildings and
urban areas
 Provide to all new businesses
•buildings equipped with fiber
•FTTO or FTTB scenarios
Rural areas
 Principally stop deploying
feeder copper wires
fiber to the village plus DSL
•EPON (preferred)
•P2P
Bandwidth target: >4Mb/s
Fiber-in & Copper-out in CTC networks
from FTTB/N to FTTH
From 2008 to 2010, through
EPON deployment in FTTB/N
architecture:
1. Customers’ access bandwidth
improved significantly
2. EPON equipments and ODN
technologies were improved,
and China Telecom completed
OLT distribution in key network
points
in 2010, EPON is mature
enough and ready for FTTH
mass deploymen due to:
• attractive equipment price
• simplified network
engineering
• fewer technical challenges
• simplified IT services
• improved service process
"Fiber-in & Copper-out"
Changes in CTC BB network capacity
PON
1%
FTTH(PON) Ethernet
5%
10%
Ethernet
19%
FTTB(PON)
26%
DSL
80%
2007
DSL
59%
Q1, 2011
China's EPON Ecosystem
CTC has played the key role in
developing EPON ecosystem in China
ASIC
Optics
CTC announces “Broadband China,
Optical City” project
On 16 Feb, 2011, China Telecom announced the grand
project to accelerate FTTH deployment in China
In three years, CTC will complete fiberization of all cities’ BB
networks to achieve the target of 100M to home, 1G to
building
by the end of 12th 5-Years (2015), CTC plans to pass 100+
million homes with FTTH
Progress and plan
FTTH home pass (new): 2010: 10M; 2011: 30M; 2012: ~25M,
FTTH subscribers (new): 2010: 1M; 2011: 5M; 2012: >10M
FTTB/N home pass (new): 2009: 7M; 2010: 10M; 2011:
10M;2012: >7M
China's nation broadband strategy
The central government of China is
drafting a nation-wide broadband
strategy entitled “Broadband China
Strategy”. This strategy intends to
accelerate China's BB network upgrade
and service development
Content of “Broadband China Strategy”:




By the end of 2015, the total number of BB subs
to reach 250M+
Access bandwidth to reach average of 20Mbps for
urban residential users, and at least 4M will be
provided for suburban users
By the end of 2020, China will provide advanced
BB information infrastructure for all citizens at the
international quality level.
In 2012, new FTTH-passed homes will reach
35M+, and more than 50% broadbnad
subscribers will enjoy the access bandwidth of no
Development & Application of 10G-EPON



China Telecom deeply involved in 10G-EPON standardization and
product IOP . In April 2011, CTC achieved 10G-EPON
interoperability at system level
10G capable PON will be deployed first to improve MDU’s uplink
bandwidth to achieve FTTH-like capacity for each subscriber
More than 500 ports 10G-EPON-fed MDU are already in operation in
China Telecom networks. More are on the way.
10G
GPON
GPON
2010.11release XG-PON1 standard
Commercial chipset and optical TX: Q2,2012
Commercial deployment: end fo 2012
XG-PON1
XG-PON2
Asymmetric
Symmetric, no plan
Asymmetric &
Symmetric
EPON
40G
PON
10G-EPON
IEEE Std 802.3av released in Sep, 2009.
Commercial 10G-EPON deployment in
Q1, 2010
2009
2010
2011
2012
10G-PON based FTTN/C+VDSL2





10G-PON based FTTN/C+VDSL2 plays more
important role in China than ever before
Thanks to its high data rate, it is ideal for supporting
data feed for MDU ONU. Current 10G-EPON
deployment scenarios are primarily focused on FTTN
VDSL2 and its follow-up technologies is the best
cost-effective for brown field upgrade, especially
when used with 10G-EPON for backhaul.
10G-PON based FTTN/B+ VDSL2 provides FTTH-like
access bandwidth with low cost and simple
engineering
Current EPON/GPON based FTTN+ADSL2+ will be
migrated to 10G-PON based FTTN+VDSL2 in the
near future.
THANK YOU!