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LTE Advanced

February 2012


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LTE Has Strong Commitments

LTE NETWORK LAUNCHES

LAUNCHES NETWORK COMMITMENTS

TDD DEVICES ANNOUNCEDTDD LAUNCHES

LTE TDD LAUNCHED

GROWING DEVICE ECOSYSTEM

DEVICES VENDORS

Source: www.gsacom.comJan 2012
http://www.gsacom.com/http://www.gsacom.com/


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Qualcomm is Committed to ContinuedLTE Evolution

Screenshot from over theover-the-air HetNet demo,showing picocells range

expansion, within one

macrocell

A main contributor to key LTEAdvanced features

Major contributor for ITU IMT-Advanced submission

INDUSTRY-FIRSTDEMOS

STANDARDSLEADERSHIP

INDUSTRY-FIRSTLTE/3G CHIPSETS

MWC 2011: Live HeterogeneousNetwork Demo

MWC 2012: Live Over-The-AirHetNet Demo with Mobility

Commercial launch 4Q 2010


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LTE AdvancedThe Global 4G Solution

Qualcomm: LTE Advanced LeadershipOver-the-Air prototype network, design and standards leadership

Small Cells Provide Next Performance LeapBring the network closer to user and leverage a Heterogeneous network topology

LTE Advanced Makes The Leap BiggerIts not just about adding small cellsneed advanced interference management

Higher Capacity & Enhanced User ExperienceHigher network capacity, better macro offload and higher data rates for all users

Heterogeneous Networks/HetNets: macro network with added small cells like picocells


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5

Qualcomm is a Leader in 3G and 4G

2013 2014 2015+2012

1X AdvancedCDMA2000

1X

HSPA+Advanced

HSPA+(Future)

Rel-11 & BeyondRel-10Rel-9

HSPA+(Commercial)

Rel-8Rel-7

HSPA

LTE Leverages widerand unpaired spectrum

Commercial

Note: Estimated commercial dates.

Rel-11 & BeyondRel-10Rel-9Rel-8

LTEAdvanced

LTE(FDD and TDDCommercial)

DO Advanced(Future)

Multicarrier

EV-DO

Rev A H/W Upgrade

EV-DO Rev. B(Commercial)

Phase - I Phase - II

DOAdvanced

Created 02/08/2012


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The Next Leap In PerformanceSmall Cells

Ad d ing small c ells likePico c ells, Fem toc ells, andRemote Radioheads

How do weget morecapacity?

Bring Network Closer toUsersSmall Cells

Optimizations Makes the LeapEven BiggerSmart HetNets

Radio Link approaching theoretical limit

Better TechniquesSuch as higher order MIMO,Smart Networks

More SpectrumNew bands, Re-farmingAggregate TDD spectrum


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LTE Advanced Brings Different Dimensionsof ImprovementsMost Gain From HetNets

Leverage widerbandwidth

Carrier aggregation acrossmultiple carriers and multiple bands

Leverage heterogeneousnetwork topology (HetNet)

With advanced interference management(low power picocells with adaptive resource partitioning

and advanced receiver based devices)

Leverage more radiolinks, more antennas

Downlink MIMO up to 8x8, enhancedMulti User MIMO and uplink MIMO up to 4x4

Primarily higherdata rates

(bps)

Higher spectralefficiency

(bps/Hz)

Higher spectralefficiency percoverage area

(bps/Hz/km2)


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Its not just about adding small cellsLTE Advanced makes the leap bigger1

LTE Ad va nc ed Hetne tsHighe r Capac ity, Enha nc ed User Experienc e, User Fa irness

MEDIAN DATA

RATE

2.2X

1By applying advanced interference management to HetNets


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Increased Network Capacity and EnhancedUser Experience

Range ExpansionBETTER UTILIZATION OF SMALL CELLS

Picocell

Macro+Picos

Macro+Picos

Picocell

MacroOnly

Data Rate Improvement

Picocell

2.8X

1.4X

1XLTER8

LTER8

LTEAdvanced

with

Range

Expan

sion

Median downlink data rate1

Assumptions: 4 Picos added per macro and 33% of users dropped in clusters closer to picos (hotspots) : 10 MHz FDD, 2x2 MIMO, 25 users and 500m ISD. Advancedinterference management: enhanced time-domain adaptive resource partitioning, advanced receiver devices with enhanced RRM and RLM1Similar gain for the uplink


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Range Expansion Allows More Users toBenefit From Small CellsSIGNIFICANTLY BETTER MACRO OFFLOAD

Number of Picos per Macro cell

2 4 10

LTER8

Range Expa nsion

Percentage of pico users1

Assumptions: TR 36.814, Macro ISD=500m, 100 antenna downtilt 25 UEs per Macro cell, uniform random layout, 10 MHz FDD, 2x2 MIMO. 1And enhanced RRM andRLM to allow handover to weak cells, to maintain reliable link with weak cells, and to provide accurate feedback with resource partitioning. Standards name eICIC:Enhanced inter-cell interference coordination 1For uniform, random user distribution

82%

57%

37%

26%12%

6%

Small Cell

RANGE EXPANSION

1) Adaptive Resource Partitioning1

2) Advanced Receiver Devices with

Interference Cancellation

Enabled By:


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Ensures Ubiquitous Broadband ExperienceEVEN WHEN SMALL CELLS CANNOT BE PLACED AT OPTIMAL LOCATION

Assumptions: 4 Picos per Macro randomly dropped within macro coverage, see 3GPP R1-101509. Based methodology in TR 36.814: 10 MHz FDD, 2x2 MIMO, 25users and 500m ISD . Worst user is defined as 5 percentile user, typically the Cell edge user 1Typically cell edge users, similar gain experienced for the uplink

Picocell

Picocell

PicocellMacro+Picos

Macro+Picos

MacroOnly

SIGNIFICANTLY HIGHER% OF USERS WITH >1 Mbps

78%

38%

22%LTER8 L

TER8

LTEAdvanced

with

Range

Expa

nsion

Macro+Picos

Macro+Picos

MacroOnly

1.7X

1.05X1X

LTER8

LTER8

LTEAdvance

d

with

Range

Expan

sion

IMPROVES WORSTCELL EDGE USER1


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Adaptive Interference Management Adapts toNetwork Changes And Actual Network Load

1Advanced adaptive interference management : enhanced time-domain adaptive resource partitioning with enhanced RRM/RLM and advanced receiver devices

Provides network load balancingBenefits all Hetnetsbut necessary for dense HetNets

Ada pts to typ ica lly uneven load that changes with time and location

Heavy Load

Medium Load

Light Load

Ada pts to ad ded nodes, like Picocells


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THE SECRET SAUCE:ENABLES RANGE EXPANSION THAT ALLOWS MORE USERS TO BENEFIT FROM SMALL CELLS

1With almost blank subframes

FULLBACKWARDCOMPATIBILITY1

ADAPTIVERESOURCEPARTITIONING

ADVANCEDRECEIVERDEVICES


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Adaptive Resource Partitioning:

PICOS

MACROMACRO

PICOS

MACRO

PICOS

TIME


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ADVANCED RECEIVER DEVICES WITHINTERFERENCE CANCELLATION

(CANCELLING OVERHEAD CHANNELS1)

TO DISCOVERSMALL CELLS

TO ENABLE HIGHERDATA RATES

TO ENABLE FULLRANGE EXPANSION

1Device interference cancellation cancels overhead channels such as common reference signal(CRS)


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Today: Our Testbed

Tomorrow: Your Network


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Qualcomms LTE Advanced Testbed

EVALUATING THE DESIGN AND FEATURES TO REALIZEFULL BENEFITS OF HETEROGENEOUS NETWORKS

Evaluating the design and features

to realize the full benefits of heterogeneous networks

Over-The-Air HetNet

Live since March 2011 Multiple macrocells and picocells in a co-channel deployment

Demonstrating e.g. pico discovery and range expansion with mobility


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LEVERAGE WIDERBANDWIDTH

Carrier aggregation acrossmultiple carriers and multiple bands

PRIMARILY HIGHERDATA RATES

(bps)

CARRIER AGGREGATION

LTE

Carrier #5

LTECarrier #4

LTECarrier #3

LTECarrier #2

LTECarrier #1 Aggregated

Data PipeUp to

100 MHz

ENHANCES USEREXPERIENCE

HIGHER PEAK ANDUSER DATA RATES

(OVER 1 GBPS POSSIBLE)

LEVERAGES ALLSPECTRUM ASSETS


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LTE

Carrier#5

LTE

C

arrier#4

LTE

Carrier#3

LTE

Carrier#2

LTE

Carrier#1

AggregatedData Pipe

Carrier Aggregation Leverages All SpectrumAssets

Aggregate spectrum within a bandto create a fatter data pipe

Aggregate across spectrum bands

Aggregate more downlink capacity

supplemental downlink (unpairedspectrum)

Enhances heterogeneousnetworks (multiple carriers)

Aggregation within band

E.g. 2.6 GHz

10 MHz

MacroPico

Carrier 1

Carrier 2

Pico

Example: Carrier 1 used for wide area macro coverage, but also by picocells,carrier 2 used by all nodes, but with lower power around macrocell

10 MHz

Supplemental Downlink

E.g. 700MHz


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Qualcomm: Continued Standards Leadership

Notes 1Based on pre-meeting contribution count for 3GPP RAN WG4 (in charge of performance requirements) . 2E.g. for femtocells and positioning across all working groupsand areas. Examples of features such as Mobility, access control, local IP access, system definition, security . 3for single point transmission results, also showed that thatNetwork-MIMO/CoMP techniques were not required to satisfy those requirements.

A leading contributor for LTE performancedefinition in 20091

Leader in several key LTE standards areas2

A Main contributor to key LTE Advanced features Carrier aggregation, self-organizing network, relay, waveform

Major contributor for ITU IMT-Advanced submission First company to show results satisfying IMT-Advanced requirements3

LTE Rel-10 HetNet work item completed June 2011 Enhanced inter-cell interference coordination (eICIC) work item completed in Rel-10

Additional eICIC enhancement considered for Rel-11


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Common LTE FDD & TDD Chipset Platform

MSM 8960LTE

DC-HSPA+/DOrBEDGE

MDM 9200LTE

DC-HSPA+EDGEMDM 9600LTE

DC-HSPA+/DOrB

EDGE

50+ designs by 25+ OEMs Commercial 4Q 2010 100 Mbps DL/50 Mbps UL

Dual-Core CPU (28nm) Superior graphics & multimedia Integrated connectivity (WLAN, GPS,

Bluetooth, FM)

MSM8960 launches in 2012 Handset & tablet launches in 2011

based on MDM9x00+MSM

MODEMS & DATA CARDS SMARTPHONES & TABLETS

Industrys First LTE/3G Multimode Chipsets


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Qualcomm: LTE Advanced Leadership

A Leading Contributorto LTE Advanced

Standards

SpearheadingTechnology

Design Efforts

State-of-the-ArtLTE AdvancedOTA Network

Ensuresuser fairness

Significantlyhigher capacity

(Range expansion)

Enhanceduser experience

Better macrooffload

ITS NOT JUST ABOUT ADDING SMALL CELLSLTE ADVANCED REALIZES FULL BENEFITS OF HETNETS

Heterogeneous Networks /HetNets: macro network with added small cells like picocells


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Questions? Connect with Us

www.qualcomm.com/technology

http://www.qualcomm.com/blog/contributors/prakash-sangam

@Qualcomm_Tech

http://www.slideshare.net/qualcommwirelessevolution
http://www.qualcomm.com/technologyhttp://www.qualcomm.com/blog/contributors/prakash-sangamhttp://www.qualcomm.com/blog/contributors/prakash-sangamhttp://www.twitter.com/Qualcomm_Techhttp://www.slideshare.net/qualcommwirelessevolutionhttp://www.slideshare.net/qualcommwirelessevolutionhttp://www.slideshare.net/qualcommwirelessevolutionhttp://www.slideshare.net/qualcommwirelessevolutionhttp://www.twitter.com/Qualcomm_Techhttp://www.twitter.com/Qualcomm_Techhttp://www.qualcomm.com/blog/contributors/prakash-sangamhttp://www.qualcomm.com/blog/contributors/prakash-sangamhttp://www.qualcomm.com/technology


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Additional Slides


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LTECarrier #5

LTECarrier #4

LTECarrier #3

LTECarrier #2

Carrier Aggregation Enhances UserExperience

LTECarrier #1 Aggregated

Data PipeUp to

100 MHz

LTE MulticarrierDevice

eNodeB

Up to 20 MHz

Up to 20 MHz

Up to 20 MHz

Up to 20 MHz

Increased data rates and lower latencies for all users in the cell Can more than double bursty application capacity

Datarates scale with bandwidthover 1 Gbps peak data rate Aggregating 40 MHz to 100 MHz provide peak data rates of 300 Mbps to 750 Mbps 1 (2x2 MIMO) and over 1 Gbps (4x4 MIMO)

1LTE R8 supports 4x4 MIMO, which enables 300 Mbps in 20 Mhz. Theoretically, LTE Advanced can support over 1Gbps peak data rates by aggregating at least 4 20MHz carriers (up to100 MHz of spectrum) using 4x4 MIMO.

Up to 20 MHz


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Adaptive Time-Domain Resource Partitioning

Adaptsto topology, loadand user distribution

Mitigates interference

Time Domain Partitioning Examplea.k.a enhanced inter-cell interference coordination

Adaptive Partitioning Example25% Semi static to macro and pico, 50% adaptive

LTE R8 provides limited interference management; primitive X2-basedadaptive resource partitioningutilizes modified X2. Frequency partitioning is the only option forasynchronous networks (Networks without GPS timing) 1Static and semi static allocation signaled to device. Enables flexible partitioning options, e.g. pico could also usereserved macro subframes (without benefits of range expansion)

Time-Domain Resources

Subframes reservedfor macro

Subframesreserved for pico

Macro

DL

Pico

DL

Blanksubframes

Ensure fairness

Flexible and adaptivepartitioning options


Macro

DL

Pico

DL

Adaptive subframes,served by pico or macro


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Advanced Receiver Devices with InterferenceCancellation Enable Full Range Expansion

New device canutilize full range

(LTE R10)

Legacy device cannotutilize expanded range

(LTE R8/9)


1Adding overhead channels such as synch, broadcast and common reference signal to blank subframes to support legacy devices 2Device interferencecancellation cancels overhead channels such as such as synch, broadcast and common reference signal(CRS) to enable full range expansion.

Advanced Receiver Devices2:1) Discover small cell in expanded range

2) Enable higher data rates3) Effectively expand small cell range

Example with no pico reserved subframes

Macro

DL

Pico

DL

Support Legacy Devices1Continue to transmit overhead channels

in almost blank frames

Range expansion for new devicesSubframes not used by macro reduces interference

Subframes reservedfor macro

Small cell


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Relays Extend Coverage and ImproveCapacity without Backhaul Expenses

RANGEEXPANSION

Picocell

Relays use part ofmacro capacity asbackhaul

Relay Node

Macro+Relays

Macro+Relays

MEDIAN USER

1.8X

1X

Downlink Data Rates

AdvancedInterference

Management

(Range Expa nsion)

Web Lte Advanced 020812 Na Ext

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