Transcript
LTE Launch and Services for the Next Decade
Seizo ONOE
Senior Vice President R&D Strategy
NTT DOCOMO,
ITU-R Regional
Workshop on
‘IMT
for
the Next Decade’,
Bangkok, Thailand
Contents
Contents
Current Status of Mobile ServisesMobile Market Status in Japan
DOCOMO’s 3G Services
LTE ServicesOverview of LTE Service ‘Xi’
Spectrum, Deployment and Voice Strategy and Services
IMT for the Next DecadeOriginal Concept Challenges for
end
Summary
Pre-history of
LTE standardization
Contents
Current Status of Mobile ServisesMobile Market Status in Japan
DOCOMO’s 3G Services
LTE ServicesOverview of LTE Service ‘Xi’
Spectrum, Deployment and Voice Strategy and Services
IMT for the Next DecadeOriginal Concept Challenges for
end
Summary
Pre-history of
LTE standardization
Mobile Market in Japan
31.541.551.161.169.375.981.987.091.896.7102.7107.5112.2118.20.17.216.730.448.388.199.6109.1116.734.651.962.569.775.279.884.488.
791.293.296.469.902040608010012019981999200020012002200320042005200620072008200920102011Mobile
Subscribers3G
SubscribersMobile
Internet
Access
.
The penetration .
Mobile
Reference :
Telecommunications
Carriers
Association
Subscribers (Million)
63% for e-mail,
47% for browsing
37% for gaming
in a train
Mar.
Feb.
Growth of Packet Traffic per User
Seizo
February
5
(Jun 2004)
1,000
0
2,000
3,000
4,000
5,000
Number of Packets Per Day .User
Feb
1999
Aug
1999
Feb
2000
Aug
2000
Feb
2001
Aug
2001
Feb
2002
Aug
2002
Feb
2003
Aug
2003
Feb
2004
Aug
2004
Used
2G
Packets
Per Day Per User
Used
3G
Packets
Per Day Per User
We need more and
cost-effectiveness of the network
in order to services by
reasonable
.
3G has a much .
A potential traffic.
Growth of Packet Traffic/User
Oct2003Apr2004Oct2004Apr2005Oct2005Apr2006Oct2006Apr2007Oct2007Apr2008Oct2008Apr2009
Verizon
presentation
Contents
ARPU
Trend
Growth of Packet Traffic in DOCOMO
01,0002,0003,0004,0005,0006,0007,0008,0009,00010,00011,00012,00013,00014,00015,0002003/32004/32005/32006/32007/32008/32009/32010/32011/32012/32013/3
Still picture
Others
Video
.
Data traffic has been increasing rapidly at of approx. 1.6 times over the previous year.
.
Video is the major contents in data traffic.
Contents
Current Status of Mobile ServisesMobile Market Status in Japan
DOCOMO’s 3G Services
LTE ServicesOverview of LTE Service ‘Xi’
Spectrum, Deployment and Voice Strategy and Services
IMT for the Next DecadeOriginal Concept Challenges for
end
Summary
Pre-history of
LTE standardization
DOCOMO
over
ETWS
Meteorological Office
“
i-
concier”
Mobile phone to serve as a “
concierge” to assist individual customer’s
daily activities
Aim to develop ultimate mobile phones like
“
Aladdin’s magic lamp”
Evolution from a
“
phone capable of
doing XX”
into
“
phone that will actively do XX on behalf of customers”
MCj02223650000[1]
MCj02210150000[1]
Number of subscriptions
(Million subs)
08/1209/309/0609/0909/1210/310/610/910/12
pose2-081030
(titles)
Steadfast growth
Steadfast growth
Number of content posted
020040060080008/1209/
309/609/909/1210/310/610/
910/12
800
600
400
200
0
“i-concier” subscriptions 5.80 million, increase contents
2.00
4.00
6.00
0.00
pose2-081030
Video services
“
BeeTV”
¥315/month (
tax included)
0.00.20.40.60.81.01.21.409/609/909/1210/310/610/910/12
動. アレが見たい、を今ここで。
Video
DOCOMO VIDEO
What you really wanted to see is now in your hands
(Million subs)
Products
Feature phones
One-Seg compatible
Video Clips compatible
Pocket U compatible
i-αppli Online compatible
i-αppli touch compatible
Chaku-Uta Full compatible
Uta-hodai compatible
Kisekae Tool compatible
Deco-mail / Deco-mail pictograms compatible
Decome Anime compatible
Voice-input mail compatible
Videophone compatible
i-concier compatible
i-Widget compatible
2in1 compatible
GPS compatible
DCMX / Osaifu-Keitai compatible
WORLD WING (3G+GSM) compatible
FOMA HIGH-SPEED (7.2Mbps) compatible
Area Mail compatible
Music&Video Channel compatible
New Trends
フォトパネル 02の..
FOMA UM02-KOの正面..
Smartphones
Embedded Modules
Photo Panel
Data Communications
08/
608/
908/
1209/
309/
609/
909/
1210/
310/
610/
910/
12
:
Usage-based billing plans
(Million subs)
0.20
0.40
0.60
0.80
1.00
1.20
1.40
:
Flat-rate
data
plans
FOMA N2502 HIGH-SPEEDの製品詳細へ
FOMA L-07Aの製品詳細へ
Card-t
FOMA L-05Aの製品詳細へ
USB-ty
Mobile Wi-FI router
モバイルWi-Fiル.タ. BF-01Bの..
MCj04316320000[1]
PC with built-in communication module
LYNX
SH-10B
新しい.像 (12)
Xperia
お便りフォトのロゴ
2009-2010 summer
Smartphones
in DOCOMO
14
Cumulative sales
/2010
/2011
(Million)
Jun.
Sep.
Dec.
Mar.
0.0
0.5
1.0
1.5
2.0
Sales of smartphones
accelerated rapidly
since last year
NQ_T-01C_正面閉_メロ.ボルド.RGBのコピ..jpg
REGZA Phone
NQ_SH-03C_Fairyviolvet_正面01CMYKのコピ..jpg
LYNX 3
新しい.像 (12)
NQ_blackberrycurve_正面02CMYKのコピ..jpg
BlackBerry Curve 9300
Optimus chat
L-04C_whitesilver_正面開_ロゴ修正のコピ..jpg
Xperia
Xperia
MEDIAS
Optimus
2010-
Growth of Packet Traffic in DOCOMO
FOMA HIGH-SPEED logo
01,0002,0003,0004,0005,0006,0007,0008,0009,00010,00011,00012,00013,00014,00015,0002003/32004/32005/32006/32007/32008/32009/32010/32011/32012/32013/3
Still picture
Others
Video
imode-3d
FeliCa
クリップボ.ド01
NQ_T-01C_正面閉_モイストブラックRGBのコピ..jpg
F:\\新1029_2010秋冬_docomo端末デ.タ\\1030端末差し替え\\1104_NQ_SH-03C_FairyBlue_正面01CMYK.png
Smartphones
pose2-081030
.
Various services, especially video services, high speed mobile access increased the .
Further traffic growth is projected due increase in smartphone sales.
Contents
Current Status of Mobile ServisesMobile Market Status in Japan
DOCOMO’s 3G Services
LTE ServicesOverview of LTE Service ‘Xi’
Spectrum, Deployment and Voice Strategy and Services
IMT for the Next DecadeOriginal Concept Challenges for
end
Summary
Pre-history of
LTE standardization
Contents
Current Status of Mobile ServisesMobile Market Status in Japan
DOCOMO’s 3G Services
LTE ServicesOverview of LTE Service ‘Xi’
Spectrum, Deployment and Voice Strategy and Services
IMT for the Next DecadeOriginal Concept Challenges for
end
Summary
Pre-history of
LTE standardization
Xi™
DOCOMO launched LTE service ‘Xi’ in December 24 2010, first in Tokyo, Nagoya and Osaka areas initially with data terminals
LTE Service
‘
Xi’
(crossy)
The brand name is written
Xi™
and read
“crossy.
”
Maximum Downlink
75Mbps
37.5Mbps
UE Capability
100Mbps
(Category 3)
(In case of bandwidth)
(In case
High
Speed
Large
Capacity
Low
Latency
Brand
LTE (Xi)
-
Coverage
-
Phased Area Deployment of
LTE
Service “Xi”
Tokyo, Nagoya, Osaka
at service launch
Prefectural capitals
and
similarly sized cities
Other major nationwide
within fiscal 2011
01
Phased Area Deployment
Tokyo
Osaka
Nagoya
within fiscal
15,000 in FY2012
35,000 in FY2014
LTE (Xi)
-
Terminals
-
04
Xi
Data Terminals
at launch
Xi
Wi-Fi Routers
Xi
Handset
LTE/HSPA/W-CDMA /GSM/GPRS
L-02C
On sale now
(December 24, 2010)
F-06C
USB data
terminal
for LTE
02
03
World’s first ExpressCard-type data terminal for LTE
in 2011
in late
To be launched in April
LTE/HSPA/W-CDMA /GSM/GPRS
LTE (Xi)
-
Charges
-
Monthly
charges
(tax inclusive)
9,135 yen
6,510 yen
1,000 yen
Data volume
7GB
~
~
~
~
5GB
20,667
KB
3,177
KB
0.315 yen/
KB
~
~
~
~
~
~
~
~
Plus 2,625
yen per 2GB
for usage over 5GB
Unlimited data use at
4,935
yen
per month under “Xi Data Plan Ninen
(2years)”
Xi
Start Campaign
99.6% than per
Data-only are two-tiered with FOMA. contract, monthly charge
of 6,510 5GB of data
Xi start campaign
~
~
~
~
5,985 yen(3G)
4,935 yen
Xi
(LTE)
Xi (LTE)
Contents
Current Status of Mobile ServisesMobile Market Status in Japan
DOCOMO’s 3G Services
LTE ServicesOverview of LTE Service ‘Xi’
Spectrum, Deployment and Voice Strategy and Services
IMT for the Next DecadeOriginal Concept Challenges for
end
Summary
Pre-history of
LTE standardization
How to use spectrum for new technologies
3G
LTE
R99
frequency
R99/
HSPA
R99/
HSPA
To use different carriers for 3G and LTE
To share RF carriers between W-CDMA(R99) and HSPA(R5-)
=
3G
frequency
LTE
frequency
To share the existing band for 3G
with LTE
To use a
brand new band for LTE only
e.g. 2.1GHz Band
e.g. 2.6GHz
Band
At HSPA
launch
At LTE
launch
It is possible.
It will be needed for efficient use of existing spectrum in the future.
DOCOMO took this
at launch.
Others focus on this at this moment.
.
LTE does not require
a
brand new spectrum.
.
The existing .
Global and 2.1GHz
band is
suggested .
LTE
network .
LTE
UE implementations
DOCOMO will take this
in 2012.
.
with 2.1GHz band.
.
with 1.5GHz band.
System Deployment Scenario
2001
2010s
2015-
Ultimate
After
LTE-A
4G Spectrum(A new IMTSpectrum)
2G
LTE
3G
3G Spectrum(IMT Spectrum)
PDC
LTE/LTE-A
Spectrum Use
Efficient use of 3G spectrum for a long time
1Gbps services with broad spectrum allocation
Spectrum fragmentation is a challenge for
Europe:
2.6GHz
band, 800MHz
band, 1.8GHz band
US:
700MHz
band, AWS
band(1.7GHz/2.1GHz)
Japan:
1.5GHz
band
At the LTE launch,DOCOMO launched with 5-10MHz bandwidth 2.1GHz band.
A new spectrum,
1.5GHz
band
with 15MHz bandwidth, used
in 2012.
Others(800MHz,
The LTE spectrum be expanded to the UEs
for a long
.
We can reuse the assets of nationwide base sites such as antennas.
.
2.1GHz is favorable from global roaming point of view.
.
UEs
have
2.1GHz
RF parts.
eNodeB
Deployment Scenario with
Remote Heads
NodeB
CPRI
RRE
Antenna
Optical fiber
2.1GHz
Remote
Radio
Equipment
(Base Band Unit)
RRE launch in 2004
DOCOMO’s
Network
Typical 3G
Remote widely network.
NodeB
CPRI
RRE
Antenna
Remote
Radio
Equipment
for
LTE and UMTS
Optical fiber
2.1GHz
(Base Band Unit)
All IP Network
EPC
NodeB
CPRI/OBRI/ORI
RRE
eNodeB
Antenna
Optical fiber
2.1GHz
Common spectrum 2.1GHz band
used for LTE and UMTS
Remote
Radio
Equipment
for
LTE and UMTS
(Base Band Unit)
Commercial launch in 2009
Commercial launch
“Quite cost effective”.
http://mobilesociety.typepad.com/mobile_life/2009/02/mwc-
roundup.
html
3G
LTE
f
/OBRI/ORI
LTE Performance in Outdoor
101026_L02C-005_RUN_FTP-DL_01_DL_T-put[kbps]:TCP
= 0 bps
<5Mbps
5Mbps<
10Mbps<
15Mbps<
20Mbps<
Downlink Throughput with 5MHz
Bandwidth
Site1
Site2
Site3
Site4
Site5
500m
Uplink
Average Throughput
thorough the
6.78Mbps
Maximum
in the course
26.64Mbps
Max.
37.5Mbps
NodeB
(BBU)
CV新秦野堀西15m
コンクリ.ト柱
2GHz
.
3
キャリア
IMG_8801.
2.1GHz RRE
for LTE/3G
2.1GHz
Antenna
(2Tx,2Rx)
Reused
cover
NodeB
(BBU)
CV新秦野堀西15m
コンクリ.ト柱
2GHz
.
3
キャリア
IMG_8801.
2.1GHz RRE
for LTE/3G
2.1GHz
Antenna
(2Tx,2Rx)
Reused
eNodeB
(BBU)
Another
site
cover
LTE
3G
f
Indoor Coverage
Before LTE
launch
Indoor System
NodeB
E/O
O/
E
antennas
O/
E
O/
E
O/
E
3G
f
3G
f
NodeB
Optical fibers
LRE
NodeB
eNodeB
LRE
E/O
O/
E
O/
E
O/
E
O/
E
3G
LTE
f
3G
LTE
f
without
MIMO
After LTE
launch without MIMO
To use the system as it is
NodeB/ eNodeB
Indoor System
To use fiber wiring as it is
NodeB
eNodeB
LRE
LRE
NodeB
eNodeB
LRE
導入前
MIMO
無
MIMO
有
追い張り
After LTE
launch with MIMO
O/
E
O/
E
O/
E
O/
E
NodeB
eNodeB
LRE
E/O
3G
LTE
f
3G
LTE
f
To change the system to new
one
WDM
Polarization
Antennas
NodeB/ eNodeB
Indoor System
To use fiber wiring as it is
with
MIMO
LTE Performance in Indoor
Downlink Throughput (Average)
50m
39Mbps
46Mbps
39Mbps
41Mbps
30Mbps
34Mbps
36Mbps
23Mbps
22Mbps
23Mbps
22Mbps
20Mbps
35Mbps
50Mbps
50m
49Mbps
49Mbps
49Mbps
49Mbps
42Mbps
40Mbps
40Mbps
42Mbps
48Mbps
38Mbps
20Mbps
26Mbps
39Mbps
51Mbps
50 Mbps <
40 Mbps <
30 Mbps
20 Mbps
Downlink Throughput (Maximum)
with 10MHz Bandwidth
DOCOMO
Bldg. #Floor
in Yokosuka
details
with MIMO
Contents
Current Status of Mobile ServisesMobile Market Status in Japan
DOCOMO’s 3G Services
LTE ServicesOverview of LTE Service ‘Xi’
Spectrum, Deployment and Voice Strategy and Services
IMT for the Next DecadeOriginal Concept Challenges for
end
Summary
Pre-history of
LTE standardization
CS/
PS
IMS
LTE
CSFB
VoLTE
ATM
Network Evolution
AIPN Development Plan for Core Network
RNC
NB
MSC
RNC
GMSC
MSC
RNC
NB
NB
NB
NB
GGSN
SGSN
CS-GW
IMS
IP
ATM
ATM
IP
IP
IP
IP
IP
IP
Radio
Access
Network
Core
Network
User
Equipment
.
Integrated CS/PS
IP Network handles both of PS and CS services.
.
CS services are controlled by IMS in the core network.
2009-
NB
NB
ATM
IP
IP
IMS
CS-GW
RNC
Node B
UE
Usual
3G
protocol
(
L1-L3)
IMS
SIP
protocol
Integrated CS/PS
domain
IP Network
PS services
CS
services
CS
Network
Network Evolution
2010-
AIPN Development Plan for Core Network
RNC
GGSN
SGSN
CS-GW
NB
RNC
RNC
P-GW
eNB
NB
eNB
NB
NB
NB
eNB
S-GW
CS-GW
IMS
Radio
Access
Network
Core
Network
User
Equipment
NB
NB
PS services
MME
LTE
EPC
Integrated CS/PS
domain
IP Network
.
eNodeB
and EPC are introduced for LTE launch.
.
LTE provides
PS service only.
Network Evolution
.
Handset type of LTE terminals are introduced.
.
CS services are provided over
3G network by CS fallback.
2011-
AIPN Development Plan for Core Network
RNC
GGSN
SGSN
CS-GW
NB
RNC
RNC
P-GW
eNB
NB
eNB
NB
NB
NB
eNB
S-GW
CS-GW
IMS
Radio
Access
Network
Core
Network
User
Equipment
NB
NB
PS services
CS
services
CSFB
MME
LTE
EPC
Integrated CS/PS
domain
IP Network
Network Evolution
AIPN Development Plan for Core Network
RNC
GGSN
SGSN
CS-GW
NB
RNC
RNC
P-GW
eNB
NB
eNB
NB
eNB
NB
eNB
NB
eNB
CS-GW
IMS
Radio
Access
Network
Core
Network
User
Equipment
NB
NB
eNB
201X-
MME
S-GW
EPC
LTE
PS services
CS
services
Integrated CS/PS
domain
IP Network
.
CS services are provided over
LTE network by IMS based VoLTE
(Voice over LTE).
DOCOMO’s
Change and Challenge to
Achieve New Growth (Oct. 31, 2008)
Collaboration of Network and Handset
Processing, Memory,
etc. to be split optimally between network
and handset
Sb..
.....
?
【
History view (e-textbook)
】
A view of the town paper-type display of education communications
Contents
Current Status of Mobile ServisesMobile Market Status in Japan
DOCOMO’s 3G Services
LTE ServicesOverview of LTE Service ‘Xi’
Spectrum, Deployment and Voice Strategy and Services
IMT for the Next DecadeOriginal Concept Challenges for
end
Summary
Pre-history of
LTE standardization
Contents
Current Status of Mobile ServisesMobile Market Status in Japan
DOCOMO’s 3G Services
LTE ServicesOverview of LTE Service ‘Xi’
Spectrum, Deployment and Voice Strategy and Services
IMT for the Next DecadeOriginal Concept Challenges for
end
Summary
Pre-history of
LTE standardization
Super 3G (3.9G)
39
2000
2005
2010
2015
HSDPA
R99
4G
HSPA
Super 3G
3G Spectrum
4G Spectrum
High-level ObjectivesTo ensure the continuous and long- term
growth of the mobile communication industryTo maintain the competitiveness
of 3G
even in the 4G era
To provide a smooth path to 4G introduction
4G
S3G
Smooth introduction of 4G
Long-term evolution of
3G
=LTE
R99
HSDPA
HSPA
.
Providing a smooth path toward was DOCOMO’s
original motivation
for Super3G(
LTE) in 2004.
LTE
LTE-A
3GPP Specs
.
In 2008, 3GPP started study and TR 36.913 Advanced is an evolution
LTE promises a true / LTE-
LTE-
A
introduction scenario example
3G
LTE
f
All IP Network
EPC
NodeB
2.1GHz/
800MHz
3G
LTE
f
RRE
RRE
2.1GHz
eNodeB
LTE
(2.1GHz and 800MHz)
for 3G
for LTE
Base Band Unit
RF
Unit
for 3G/LTE
800MHz
LTE-
A introduction scenario example
System deployment
scenario
LTE/
LTE-A
3G
f
All IP Network
EPC
NodeB
2.1GHz/
800MHz
3G
f
RRE
RRE
2.1GHz
eNodeB
LTE-A introduction
LTE/
LTE-A
To share RF carriers between LTE and LTE-A
for 3G
for LTE
Base Band Unit
RF
Unit
for 3G/
LTE/LTE-A
RF
Unit:
To use as it is
Base Band
Software for minor
Carrier
Aggregation
800MHz
Add
a new band
LTE-
A introduction scenario example
System deployment
scenario
LTE-A
RRE
e.g.
3.5GHz
To deploy only in the high traffic areas
for capacity
LTE/
LTE-A
3G
f
All IP Network
EPC
2.1GHz/
800MHz
3G
f
RRE
RRE
2.1GHz
800MHz
LTE/
LTE-A
Base Band Unit
RF
Unit
for 3G/
LTE/LTE-A
Carrier
Aggregation
RF
Unit:
Hardware addition
for a new RF band
Base Band
Additional may be needed
depending
LTE-A
+new RF band
NodeB
eNodeB
for 3G
for LTE
LTE
LTE-A
Contents
Current Status of Mobile ServisesMobile Market Status in Japan
DOCOMO’s 3G Services
LTE ServicesOverview of LTE Service ‘Xi’
Spectrum, Deployment and Voice Strategy and Services
IMT for the Next DecadeOriginal Concept Challenges for
end
Summary
Pre-history of
LTE standardization
Mobile Traffic Forecast in Japan
Approx. 200
times
[1]
[2]
[3]
\"Working Group on Discussion of
Frequencies Needed to Realize Wireless Broadband Services“
Report
Telecommunications Council
Forecast of Mobile Data Traffic Growth
By 2015, the mobile
data traffic
footprint of a single
subscriber
could be
450 times what it was
10 years earlier in 2005.
The
growth
in
mobile
broadband
shows
no
signs
of slowing, with
an
average
two
million
new
subscriptions
being
added
daily. Up
to
50
billion
devices
are
expected
to
be
connected
by
2020.
Ericsson:
http:
/
/
www.
ericsson.
com/
Japan
social
networking
trends
show
importance
of
mobile
page
views
=
72%
(
2009)
vs.
17%
3
years
ago
of
total
page
views
of
Mixi
Morgan
Stanley:
Mobile video
has the
highest growth
rate
of any application category
Cisco VNI Mobile:
NSN: http://www.eweek.com/
….. said Mika Vehvilainen, chief technology
officer at Nokia Siemens Networks.
\"
Mobile [data] network traffic will be up 300-
fold in the next five years, in fixed it will go
up 30 to 40 times,\" he said during a keynote
presentation at Broadband World Forum
Europe in Paris.
growth of 300X to 500X over 10 years (from
2007-
2017) [3Gamericas, 2008].
A recent
Cisco study
combined actual MNO traffic
with
analysts’forecasts for mobile internet growth,
and concluded that this trend would continue
for at least the 5-
year planning horizon, with
data traffic
more than doubling each year
3gamericas: http://imcellular.org/
Ericsson: http://www.ericsson.com/
1000 times more data than voice by 2020….. , Ericsson CTO Hakan Eriksson talks
about the exponential growth in data usage ….
in 2015 there will be 30 times more data than
voice. If the trend continues to 2020 then data
usage will have grown by a factor of 1000.
Intel\'s
John
Woodget,
global
director,
telecoms
sector,
gave
more
conservative
data
growth
predictions,
however.
at
least
20
billion
connected
devices
by
2020
and
a
300-
fold
increase
in
traffic.
but
he
warned
that
even
at
that
level
of
growth
the
challenge
\"
may
be
far
greater
than
we
expect\"
.
Intel:
http:
/
/
www.
businessweek.
com/
Cisco:
http:
/
/
www.
fiercemobilecontent.
com/
Cisco
forecasts
mobile
data
traffic
to
grow
39-
fold
through
2014…
.
Cisco
Systems\'
Visual
Networking
Index
Global
Mobile
Data
Forecast.
The
anticipated
increase
translates
to
a
39-
fold
mobile
data
traffic
increase
from
2009
to
2014,
or
a
compound
annual
growth
rate
of
108
percent.
Consensus in demand 10 years
UMTS Forum:
Challenges for the Next decade
500 .
1000 times
(3G)
WCDMA
R99
HSPA
LTE
(Super3G)
LTE-A
(4G)
(2G)
800MHz
2GHz
1.7GHz
1.5GHz
3GHz-4GHz
Spectrum Efficiency (bps/Hz)
Spectrum Bandwidth (Hz)
700MHz
A New Technology
To cope with the increasing traffic demandTo improve Spectrum Efficiency
(bps/Hz/m2)(bps/Hz/cell)
×(cell/m2)
To expand Spectrum Bandwidth
(Hz)
Efficiency per cell
×Cell dencity
Total traffic=
for 2020
Direction of Evolution
Spectrum extension
Network density
Current
capacity
Required network capacity
Traffic offloading
Spectrum efficiency
-
Radio access technologies
including multi-antenna transmission
and receiver processing techniques
-
Never-ending issue facing researchers and engineers in this area
-
Efficient way to reduce per bit
-
Depends on future spectrum allocation and
-
Technical trends such as multi- layer cell
deployment
-
High priority requirement: Network architecture to cost per bit
-
Offloading strategies tuned to applications and scenarios
Direction of evolution to further enhance network capacity
Cost efficient for capacity
Emerging solutions to deal with traffic explosion
Solutions and Expected Contributions
Target = 500 . 1000x traffic by 2020 (compared to 2010)
Solutions
Percentage of contribution
Notes
Spectral efficiency
(per cell)
Radio access technology
3x LTE Rel. 10
(24x HSPA Rel. 6)
2.5x LTE Rel. 10 (10x HSPA Rel. 6)
LTE Rel. 10: 1.3x LTE Rel. 8
LTE Rel. 8: 3x HSPA Rel. 6
Total
=
3 x 1.3 x 2.5 = 10x
Number of Tx/Rx antennas
1.2x LTE Rel. 10 (2.4x HSPA Rel. 6)-
4x4
MIMO
for handset UE (
smartphone)
-
Higher-
order
MIMO
(
e.g.
12x12)
for
indoor
cells
LTE Rel. 10: 2x HSPA
Rel. 6 (4x4 MIMO)
Total
=
2 x 1.2 = 2.4x
Spectrum extension
>2x
Newly identified spectrum WRC07/16 + spectrum
Traffic offloading
1.5x
30% traffic assumed (mainly for indoor multi-mode terminals)
Network density
7 .
14x
Denser NW deployments femto/pico-
Total
~ 500 .
1000x
Evolution of Mobile Communications
Voice centric
Voice and Data
High-speed data
Super high-speed data
(100Mbps
~
1Gbps)
1G
Analog
2G
Digital
3G
IMT-2000
4G
IMT-Advanced
1980s
1990s
2000s
2010s
Evolution
(3.9G)
LTE
Long-Term Evolution
Xi™
2020s
DECADE
LTE-A
DemandDemand
TechnologyTechnology
SpectrumSpectrum
Summary
Current Status of Mobile ServicesIn Japan, 3G penetration rate is almost 100% and the mobile internet was widely spread from early 2000s.
Data traffic has increased by 10 times years and the increase rate becomes
LTE ServicesDOCOMO launched LTE service (crossy)
on 24 Dec. 2010.
LTE has a potential to enhance using its features of .
IMT for the Next DecadeLTE provides a for
the next decade.
Spectrum is for the next
end
Summary
Pre-history of
LTE standardization