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LTE World Summit Barcelona May 2012 Day 2
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MOBILE AND COMMUNICATIONS GROUP
LTE Band Fragmentation –
Challenges for Cellular Platform Designs
LTE World Summit 2012 Thomas Lindner, Multi-Comm
Marketing
Intel - Positioned for Success in Mobile
• Fastest growing cellular platform
supplier among Top 5
• Best-in-class slim modem technology
with smallest footprint
• Most cost-effective single-chip
platform solutions
MOBILE AND COMMUNICATIONS GROUP 3 May 24, 2012
MOBILE AND COMMUNICATIONS GROUP
Building A Comprehensive Mobility Portfolio
Security
Imaging
PMIC WWAN
Software
& Services Intel®
Atom™
Graphics
Intel® XMM™
Communications
Technologies
Connectivity
(Intel WiFi)
4 May 24, 2012
• LTE is the fastest growing
wireless technology
• Strong commitment from
network vendors, operators
and device/platform
manufacturers
• 72 commercial networks
launched by today
Source: GSA
Band fragmentation challenges the wireless ecosystem!
MOBILE AND COMMUNICATIONS GROUP
The LTE Success Story
5 May 24, 2012
Frequency Band Landscape
MOBILE AND COMMUNICATIONS GROUP
2
3
5
8
690 MHz 940 MHz 1190 MHz 1440 MHz 1690 MHz 1940 MHz 2190 MHz 2440 MHz 2690 MHz
GSM /EDGE (2G) Only 4 bands to gain
global coverage
UL-FDD
DL-FDD
6 May 24, 2012
MOBILE AND COMMUNICATIONS GROUP
Frequency Band Landscape
1
2
4 5
8
690 MHz 940 MHz 1190 MHz 1440 MHz 1690 MHz 1940 MHz 2190 MHz 2440 MHz 2690 MHz
UMTS /WCDMA (3G) Only 5 bands to gain
global coverage (including 2G overlap)
UL-FDD
DL-FDD
7 May 24, 2012
MOBILE AND COMMUNICATIONS GROUP
Frequency Band Landscape
1 2
3
4 5
6 7
8 9
10 11
12 13
14 24
17 18
19
20 21
33 34
35 36
37 38
41-XGP 39
40 41
690 MHz 940 MHz 1190 MHz 1440 MHz 1690 MHz 1940 MHz 2190 MHz 2440 MHz 2690 MHz
UL-FDD
DL-FDD
TDD
LTE is a game changer
in terms of band variants
and spectrum fragmentation !
8 May 24, 2012
MOBILE AND COMMUNICATIONS GROUP
• Multiband support for global LTE access
Frequency band proliferation
• Inter RAT mobility to improve coverage and secure voice support
2G/3G legacy support
• Carrier aggregation for improved user experience and network efficiency
Non contiguous blocks of spectrum
• Dedicated mechanisms to avoid interference between LTE and WiFi/BT Coexistence
Additional Challenges within the
LTE Frequency Landscape
9 May 24, 2012
MOBILE AND COMMUNICATIONS GROUP
Intel‘s RF Solution
supports more than
ten frequency bands
in a single device!
Solution: Multiband RF Architecture
• Smart Implementation to achieve best-in-class performance
• Highest band flexibility at lowest cost, size and current drain
Benefits:
• One single design fulfills worldwide and regional LTE requirements
including full legacy 2G/3G support
• Enabling roaming capabilities to guarantee adequate LTE coverage
and seamless service to end customer
10 May 24, 2012
MOBILE AND COMMUNICATIONS GROUP
Carrier 1 Carrier 2
Carrier 1 Carrier 2
Carrier 1 Carrier 2
Band A
Band A
Band A Band B
Intel`s flexible RF
architectures meet
current and future
carrier aggregation
needs!
Solution: Carrier Aggregation
• Carrier Aggregation to enable true mobile broadband experience over
multiple frequency blocks
Challenges:
• RF frontend design to cope with increasing number of frequency
bands and carrier aggregation combinations
• Complex PCB stack to enable concurrent carrier aggregation
combinations
11 May 24, 2012
MOBILE AND COMMUNICATIONS GROUP
2300 – 2400
MHz
LTE Band 40
TDD
2400 – 2483.5
MHz
ISM Band,
BT and WiFi
2500 – 2570
MHz
LTE Band 7
FDD Uplink
Intel drives 3GPP
standardization towards
efficient time-division
coexistence solutions!
Solution : Coexistence
• Dedicated mechanisms are necessary to enable coexistence among
interfering technologies
Challenges:
• Physical limitations of RF filtering on specific bands
• Time-division solution between communication standards required
12 May 24, 2012
MOBILE AND COMMUNICATIONS GROUP
Intel RF
Innovation
Approach
• Innovative Transceiver
Architectures • Wideband transmit chain
• Wideband receiver LNA’s
• Enhanced MultiMode-
MultiBand Power
Amplifier Architectures • Small component count
• Small PCB area
• Low eBOM
• Innovative RF Front-Ends • Tunable filters / duplexers
• High port count switches
• Front-End module integration
The typical
Solution
Adding front-end Components to cover additional LTE Bands
The global
Challenge
Increasing Number of Bands
Fragmented LTE Spectrum Footprint
0
5
10
15
20
25
2010 2011 2012 2013 2014
LTE Band Addit ions Est imate
2G/3G legacy FDD Low-Band
FDD High-Band TDD High-Band
LTE World Coverage requires high Number
of simultaneous Band Support
13 May 24, 2012
