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© 2008 AT&T Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property.
The Path to 4GApril 2, 2008
Kris Rinne
April 18, 2023Page 2
42.1%
18.0%
11.2%
9.2%
9.0%
6.5%
5.2%
3.3%
3.0%
Sent Text Message
Used Photo Messaging
Accessed Mobile Browser
Purchased Ringtone
Used Personal Email
Used Mobile Instant Messenger
Used Work Email
Downloaded Mobile Game
Purchased Wallpaper or Screensaver
Growth Drivers: Wireless Data Apps
Percentage of U.S. cell phone subscribers who used their phones for various activities beyond merely making phone calls.
Survey of U.S. Mobile subscribers; Data based on three-month average for period ending July 31, 2007.
Source: M:Metrics Inc.
April 18, 2023Page 3
Growth Driver: Video Customers
• 8.4 million mobile video subscribers 1Q07
• Penetration up 125% since 1Q06
Source: Telephia, FCC
April 18, 2023Page 4
Growth Drivers: Mobile Workforce
1.41
1.34
1.27
1.21
1.17
1.13
2004 2005 2006 2007 2008 2009
(in billions)
Mobile workforce is defined as anyone who spends 20% or more time away from primary work location.
Source: Industry Reports and Forrester 2006
April 18, 2023Page 5
Growth in Mobile Data Usage
62% of Americans have used Mobile Data
58% have sent an SMS, emailed or browsed the internet with their phone
41% have logged onto the Internet away from home or work either with a wireless laptop connection or a handheld device.
Source: Pew Internet & American Life Project, March 2008
April 18, 2023Page 6
Connectivity Drivers
Wireless Data Traffic (Mbps in millions)
2005 2006 2007
4 x between
’06 and ’07
April 18, 2023Page 7
HSDPA
HSUPA
HSPA
HSDPA+
LTE
April 18, 2023Page 8
Seamless Network Access:Continue Mobile Broadband Evolution
Perf
orm
an
ce
Time
Past Present Future
GPRS – 25 to 40 Kbps48 Kbps peak
EDGE – 100 to 130 Kbps237 Kbps peak
UMTS – 150 to 180 Kbps384 Kbps peak
HSDPA – 400 to 700 Kbps3.6 Mbps peak
HSUPA/HSPA – 500 to 800 Kbps up1.5 Mbps peak up (potential 5.76M)600 to 1400 Kbps down 3.6 Mbps peak down (potential 14.4M)
HSPA+ (R7) – MIMO, 64QAMPotential 11.5 Mbps peak upPotential 28 Mbps peak down
LTE (R8) – 100 Mbps and beyond peak down
Backward compatible migrationon the existing global standard
Today
Speeds are typical user throughput.
April 18, 2023Page 9
Mobility Assets: Faster Data Speeds
Technology Road Map
• Peak speeds today provide a DSL-like experience
• LTE is designed to evolve from HSPA
• With HSPA R7 peak speeds of up to 28 Mbps
• With LTE peak speeds beyond 100
Average Downlink Speedsby Technology(Kbps)
GPRS EDGE UMTSUMTS/
HSDPA R5UMTS/
HSPA R6
2005 2006 2007/2008
20042003 2009/2010
UMTS/HSPA+R7
25100 150
400
600
700
180130
40
1,400
28,000
1800
3600-7200
384237
48
April 18, 2023Page 10
GSM: 86% of World’s Wireless Users
200+ UMTS Operators
89 Countries with UMTS
164 Upgraded to HSPA
Unmatched international roaming capabilities
GSM Technologies Dominate Worldwide
Source: 3G Americas
April 18, 2023Page 11
Over 600 Million Wireless Broadband Connections in 2010
Source: Strategy Analytics Nov. 2006
HSPA 71%
EV-DO 24%
Mobile WiMax 2.5%
UMTS TDD 2.7%
Flash-OFDM 0.4%
iBurst 0.2%
April 18, 2023Page 12
Expand 3G Wireless Broadband Network
165
255
350
100
150
200
250
300
350
2006 2007 2008
Maj
or
Met
ros
April 18, 2023Page 13
466 HSPA Devices Available Worldwide
30
206
84
40
38
31
Handsets
Notebooks
Data Cards
USB Modems
Wireless Routers
Embedded Modules
Source: GSM Association
April 18, 2023Page 14
AT&T HSPA Devices Go International
PC CardsSierra
Wireless AC881
Option GT Ultra
Option GT Ultra Express
Sierra Wireless USBConnect
881
Smartphones/PDAs Blackjack II
SamsungAT&T Tilt
HTC
April 18, 2023Page 15
LTE Standards status January 2008
LTE Terrestrial Radio Access Network technology specifications have been approved by 3GPP and are now under change control, leading to their inclusion in the forthcoming 3GPP Release 8.
• Hardware impacting L1/L2 specifications functionally frozen for both FDD and TDD.
Full set of 3GPP Release 8 system specifications on track for approval during Q4 2008.
April 18, 2023Page 16
HSPA/LTE Peak Throughput Evolution:Expected to double every year in Average
100 kbps
1 Mbps
10 Mbps
100 Mbps
100 kbps
1 Mbps
10 Mbps
100 Mbps
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
HSPA DL & UL Peak Throughputs expected to double every year in average
Limitations not induced by the Technology itself but time frames required to upgrade infrastructure and transport networks, obtain devices with corresponding capabilities and IOT tests
UL R’99 384k
HSUPA 2.0M
HSUPA 5.6M
HSUPA/16QAM 11M
UL LTE (10MHz) 25M
UL LTE (20MHz) 50M
DL R’99-384k
HSDPA 1.8M
HSDPA 3.6M
HSDPA 7.2M
HSDPA 14.4M
MIMO 2x2 28M
MIMO/64QAM 41M
DL LTE(10MHz) 140M
DL LTE(20MHz) 300M
April 18, 2023Page 17
LTE Mobility Advantages
AT&T will continue to utilize WiMAX for applications primarily focused on fixed
LTE Advantages for Mobility:
• Most customers, devices and applications
• Supports worldwide roaming
• Compatibility with existing AT&T Networks
• Designed to support efficient voice operation (VoIP)
April 18, 2023Page 18
LTE Mobility Advantages
• Shorter frame size, lower amounts of overhead, and lower overall latency than WiMAX
• LTE data throughput will be equivalent to or betterthan WiMAX when both are operated in FDD mode
• LTE shorter frame size supports higher throughputs at moderate to high vehicle speeds
April 18, 2023Page 19
HSDPA
HSUPA
HSPA
HSDPA+
LTE
© 2008 AT&T Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property.
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