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3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009

3GPP 2009 1

Proposalfor

Candidate

Radio

Interface

Technologies

forIMTAdvancedBasedon

LTERelease10andBeyond

(LTE

Advanced)

TakehiroNakamura

3GPPTSG

RAN

Chairman

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3GPP 2009 2

Introduction

InresponsetotheITURCircularLetter5/LCCE/2whichinvitesproposalsforcandidateradiointerfacetechnologiesfortheterrestrialcomponentofIMTAdvanced,theThirdGenerationPartnershipProject(3GPP)isprovidingacomplete

submission

of

LTE

Release

10

&

beyond

(LTE

Advanced)

under

Step

3of

theIMTAdvancedprocessinDocument IMT-ADV/2(Rev.1)

Thissubmissionofthe3GPPcandidateSRIT(whichincludesanFDDRITcomponentandaTDDRITcomponent)isbasedonthecurrentlyapprovedworkwithin3GPPandfollowstheITURIMTAdvancedsubmissionformatand

guidelines.The3GPPProponent[1] hasprovidedallrequiredinformationwithineachofrequiredmajorcomponentseitherdirectlyorbyendorsementofthiscontributionmadeby3GPPindividualmembersonbehalfof3GPP:

Followingslidesshowoverviewofthissubmissiontogetherwithrelevantinformation

[1]The3GPPProponentofthe3GPPsubmissioniscollectivelythe3GPPOrganizationalPartners(OPs).TheOrganizationalPartnersof3GPPareARIB,ATIS,CCSA,ETSI,TTAandTTC (http://www.3gpp.org/partners)

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3GPP 2009 3

Contents

3GPPstandardizationactivities

LTERelease

8

LTERelease10andbeyond(LTEAdvanced)

Selfevaluation

ITURsubmissiondocuments

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3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009 3GPP 2009 4

3GPPStandardizationActivities

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3GPP

Standardization

Process3GPPdevelopstechnicalspecificationson3Gandbeyond mobilecommunicationsystems

3GPPOrganisational Partnersstandardizelocalspecificationsbasedonthespecificationsdevelopedby3GPP

ThestandardizationprocessineachOPisonlyaformoftranspositionandthatnotechnical

changesare

introduced

ITUExisting process

Project CoordinationGroupPCG

Technical Specification

Groups TSGs

Technicalspecifications

Partners

Organisational PartnersOP

TTC, ARIBETSI,

TTA, CCSA, ATIS

Market RepresentationPartnersMRP

GSMATD-SCDMA Forum

Femto ForumCDG, etc

14 partners

Standardization process in

each OP

Member companies

Technical proposals andcontributions

ITU Recommendations

Local

specifications

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Membership

of

3GPP

Themembershipin3GPPincludes:

the6Organizational

Partner

SDOs,

372IndividualMembercompanies,

14MarketRepresentationPartners,

and3Observerentities.

Thedetailedlistingmaybefoundatthefollowinglink:http://webapp.etsi.org/3gppmembership/Results.asp?Member=ALL_PARTNERS&SortMember=Name&DirMember=ASC&P

artner=on&SortPartner=Name&DirPartner=ASC&Market=on&SortMarket=Name&DirMarket=ASC&Observer=on&SortObserver=Name&DirObserver=ASC&SortGuest=Name&DirGuest=ASC&Name=&search=Search

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Developing internetprotocol specs

Developing Mobile

application specs

Organisational Partners

Referring to 3GPP

specs(contributed by

individual members)

Partners of 3GPPReferring to 3GPP specs

for the local specs

Referring to specs

Cross referenceof specs

Developing WirelessLAN/MAN specs

Requirements

Inputspecs

JapanEU Korea China North America

MRP

DevelopingRecommendations

TerminalCertification

Terminal certificationbased on 3GPP specs

Cross referenceof specs

StandardizationOrganisations

Communicatingwith

3GPP

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3GPP

Structure

UTRA/E-UTRAService and

system aspectsCN and

TerminalsGSM/EDGE

RAN

TechnicalSpecificationGroup

WorkingGroup

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Release

of

3GPP

specifications1999 2000 2001 2002 2003 2004 2005

Release 99

Release 4

Release 5

Release 6

1.28Mcps TDD

HSDPA, IMS

W-CDMA

HSUPA, MBMS, IMS+

2006 2007 2008 2009

Release 7 HSPA+ (MIMO, HOM etc.)

Release 8

2010 2011

LTE, SAEITU-R M.1457

IMT-2000 Recommendations

Release 9

LTE-AdvancedRelease 10

GSM/GPRS/EDGE enhancements

Small LTE/SAEenhancements

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LTERelease8

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Motivation

of

LTE

Release

8

Needtoensurethecontinuityof competitivenessofthe3G

system

for

the

futureUserdemandforhigherdataratesandqualityofservices

PSoptimised system

Continued

demand

for

cost

reduction

(CAPEX

and

OPEX)Lowcomplexity

Avoidunnecessaryfragmentationoftechnologiesforpaired

andunpairedbandoperation

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LTE

Release

8

Standardization

History2004

Q3 Q4

2005

Q1 Q2 Q3 Q4

2006

Q1 Q2 Q3 Q4

2007

Q1 Q2 Q3 Q4

2008

Q1 Q2 Q3 Q4

Study Item

Work Item

3GPP TSG meeting3GPP TSG meeting

Test specs approved

Core specs functionallyfrozenMain work items closed

Test specs approved

Core specs functionallyfrozenMain work items closed

Core specsapproved

Core specsapproved

Requirementsapproved

Requirementsapproved

Study ItemEvolved UTRAand UTRANApproved.

Study ItemEvolved UTRAand UTRANApproved.

Work Item 3G Long-term Evolutionapproved.

Work Item 3G Long-term Evolutionapproved.

2009

Q1 Q2

ASN.1 frozenASN.1 frozen

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LTE

Release

8

Key

Features

Highspectralefficiency OFDM inDownlink

Robustagainstmultipathinterference

Highaffinitytoadvancedtechniques Frequencydomainchanneldependentscheduling MIMO

DFTSOFDM(SingleCarrierFDMA)inUplink LowPAPR Userorthogonality infrequencydomain

Multiantenna

application

Verylowlatency Shortsetuptime&Shorttransferdelay ShortHOlatencyandinterruptiontime

ShortTTI

RRCprocedure

SimpleRRCstates

Supportofvariablebandwidth 1.4,3,5,10,15and20MHz

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LTE

Release

8

Key

Features

(Contd)

Simpleprotocolarchitecture

Sharedchannelbased

PSmode

only

with

VoIP

capability

SimpleArchitecture

eNodeB astheonlyEUTRANnode

SmallernumberofRANinterfaces

eNodeBMME/SAEGateway (S1)

eNodeB eNodeB (X2)

Compatibilityandinterworkingwithearlier3GPPReleases

Interworkingwithothersystems,e.g.cdma2000

FDDandTDDwithinasingleradioaccesstechnology

EfficientMulticast/Broadcast

SinglefrequencynetworkbyOFDM

SupportofSelfOrganising Network(SON)operation

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LTE

Release

8

Major

Parameters

SinglelayerforULperUE

Upto4layersforDLperUE

MUMIMO

supported

for

UL

and

DL

Spatialmultiplexing

16.7 secLong

OFDMADL

Short

UL

QPSK,16QAM,

64QAMModulation

4.7 secCyclicprefixlength

15kHzSubcarrier

spacing

1msecMinimumTTI

1.4,3,5,10,15,20MHzBandwidth

DFTSOFDMAccessScheme

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LTERelease8UserEquipment

Categories

MandatoryNotsupported4x4MIMO

MandatoryNot

supported

2x2MIMO

Assumedin

performance

requirements.2

Rx

diversity

Multiantenna

QPSK,

16QAM,

64QAM

QPSK,16QAMUL

QPSK,16QAM,64QAMDLModulation

20MHzRFbandwidth

Capabilityforphysicalfunctionalities

755050255UL

3001501005010DLPeakrate

Mbps

54321Category

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LTE

Release

8

Specifications

LTEisspecifiedin36seriestechnicalspecifications

Thelatest

version

of

the

LTE

Release

8specifications

(September2009version)canbefoundin

http://www.3gpp.org/ftp/Specs/200909/Rel8/36_series/

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LTERelease

10

and

Beyond

(LTEAdvanced)

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Overview

of

LTE

Advanced

MotivationofLTEAdvanced IMTAdvancedstandardizationprocessinITUR

AdditionalIMT

spectrum

band

identified

in

WRC07

FurtherevolutionofLTERelease8and9tomeet: RequirementsforIMTAdvancedofITUR Futureoperatorandenduserrequirements

3GPPstatus

Feasibilitystudy

is

ongoing

under

study

item,

Further

advancements

for

EUTRA(LTEAdvanced)

RequirementsandtargetsforLTEAdvancedwereagreedandpossibletechnologiestomeettherequirementsandthetargetswereidentified

SelfevaluationswereconductedandconfirmedthatLTEAdvancedmeettheallrequirementsofIMTAdvanced

AllnecessarydocumentstobesubmittedtoITURWP5D#6asthecompletesubmissionwereapprovedin3GPP

ProposalofLTEAdvancedisanSRITincludingFDDRITandTDDRIT

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StandardizationScheduleForIMT/LTE

Advanced

SDOsIndividualmembers

etc.

3GPP RAN

LTE CR phase

#38 #39 #40 #41 #42 #43 #44 #45 #46 #47 #48 #49 #50 #51 #52 #53

WS 2nd WS

Work itemStudy itemLTE-Advanced


2009 2010 20112007 2008

ITU-R WP5Dmeetings

Proposals

Evaluation

Consensus

Specification

WRC-07

Circular letterto inviteproposals

Submission ofcandidate RIT

#1 #2 #3 #4 #5 #6 #7 #8 #9 #10 #11

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Advanced


etc.

3GPP RAN

LTE CR phase

#38 #39 #40 #41 #42 #43 #44 #45 #46 #47 #48 #49 #50 #51 #52 #53

WS 2nd WS



2009 2010 20112007 2008

ITU-R WP5Dmeetings

Proposals

Evaluation

Consensus

Specification

WRC-07


Spectrum

identified

Spectrum

identified

Circular

letter

Circular

letter Submission ofcandidate RIT

#1 #2 #3 #4 #5 #6 #7 #8 #9 #10 #11

This document specifies theThis document specifies theThis document specifies theThis document specifies the

Study item approved in 3GPPStudy item approved in 3GPP

Agreed on requirementsfor IMT-Advanced

Agreed on requirementsfor IMT-Advanced

Agreed on LTE-Advancedrequirements

Agreed on LTE-Advancedrequirements

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Advanced


etc.

3GPP RAN

LTE CR phase

#38 #39 #40 #41 #42 #43 #44 #45 #46 #47 #48 #49 #50 #51 #52 #53

WS 2nd WS



2009 2010 20112007 2008

ITU-R WP5Dmeetings

Proposals

Evaluation

Consensus

Specification

WRC-07


Submission ofcandidate RIT

Initial technologysubmission ofLTE-Advanced

Initial technologysubmission ofLTE-Advanced

Completesubmission incl.self-evaluation ofLTE-Advanced

Completesubmission incl.self-evaluation ofLTE-Advanced

#1 #2 #3 #4 #5 #6 #7 #8 #9 #10 #11

This document specifies theThis document specifies theThis document specifies theThis document specifies the

Release 10Specification tobe approved

Release 10Specification tobe approved

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System

Perform

ance

IMT-Advanced

requirements and time plan

Rel. 8 LTE

LTE-Advancedtargets

Time

GeneralRequirementsfor

LTEAdvanced

LTEAdvancedisanevolutionofLTE

LTEAdvanced

shall

meet

or

exceed

IMT

Advanced

requirementswithintheITURtimeplan

ExtendedLTEAdvancedtargetsareadopted

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Peakdatarate

1Gbps dataratewillbeachievedby4by4MIMOandtransmission

bandwidthwider

than

approximately

70

MHz

Peakspectrumefficiency

DL:Rel.8LTEsatisfiesIMTAdvancedrequirement

UL:NeedtodoublefromRelease8tosatisfyIMTAdvancedrequirement

Rel. 8 LTE LTE-Advanced IMT-Advanced

Peak data rateDL 300 Mbps 1 Gbps

1 Gbps(*)UL 75 Mbps 500 Mbps

Peak spectrum efficiency[bps/Hz]

DL 15 30 15UL 3.75 15 6.75

*100 Mbps for high mobility and 1 Gbps for low mobility is one of the key features as written inCircular Letter (CL)

System

Performance

Requirements

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SystemPerformanceRequirements

(Contd)

Celledgeuser

throughput

[bps/Hz/cell/use

r]

DL 2by2 0.05 0.07

4by2 0.06 0.09 0.06

4by

4 0.08 0.12

UL 1by2 0.024 0.04

2by4 0.07 0.03

Ant. Config. Rel. 8 LTE*1 LTE-Advanced*2 IMT-Advanced*3

Capacity[bps/Hz/cell]

DL 2-by-2 1.69 2.4

4-by-2 1.87 2.6 2.2

4-by-4 2.67 3.7

UL 1-by-2 0.74 1.2

2-by-4 2.0 1.4

x1.4-1.6

*1 See TR25.912(Case 1 scenario) *2 See TR36.913(Case 1 scenario)*3 See ITU-R M.2135(Base Coverage Urban scenario)

Capacityandcelledgeuserthroughput TargetforLTEAdvancedwassetconsideringgainof1.4to1.6fromRelease8LTE

performance

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Spectrumflexibility Actualavailablespectraaredifferentaccordingtoeachregionorcountry In3GPP,variousdeploymentscenariosforspectrumallocationarebeingtakeninto

considerationin

feasibility

study

Supportforflexibledeploymentscenariosincludingdownlink/uplinkasymmetricbandwidthallocationforFDDandnoncontiguousspectrumallocation

Total 12 scenarios are identified with highest priority

Tx BWs No.ofComponentCarriers(CCs) Bands Duplex

1UL:40MHz

DL:80MHz

UL:Contiguous2x20MHzCCs

DL:Contiguous4x20MHzCCs3.5GHzband FDD

2 100MHz Contiguous

5x20

MHz

CCs Band

40

(2.3

GHz) TDD

3 100MHz Contiguous5x20MHzCCs 3.5GHzband TDD

4UL:40MHz

DL:80MHz

UL:Noncontiguous20+20MHzCCs

DL:Noncontiguous2x20+2x20MHzCCs3.5GHzband FDD

5UL:10MHz

DL:10MHzUL/DL:Noncontiguous5MHz+5MHzCCs Band8(900MHz) FDD

6 80MHz Noncontiguous2x20+2x20MHzCCs Band38(2.6GHz) TDD

OtherImportantRequirements

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OtherImportantRequirements(Contd)

LTEAdvancedwillbedeployedasanevolutionof

LTERelease

8and

on

new

bands.

LTEAdvancedshallbebackwardscompatiblewith

LTERelease8inthesensethat

aLTE

Release

8terminal

can

work

in

an

LTE

Advanced

NW,

anLTEAdvancedterminalcanworkinanLTERelease8NW

Increaseddeployment

of

indoor

eNB and

HNB

in

LTEAdvanced.

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TechnicalOutlinetoAchieveLTE

AdvancedRequirements

Supportwiderbandwidth Carrier aggregationtoachievewiderbandwidth

Supportofspectrumaggregation

Peakdata

rate,

spectrum

flexibility

AdvancedMIMOtechniques Extensiontoupto8layertransmissionindownlink IntroductionofsingleuserMIMOupto4layertransmissioninuplink

Peakdatarate,capacity,celledgeuserthroughput

Coordinatedmultipointtransmissionandreception(CoMP)

CoMP transmissionin

downlink

CoMP receptioninuplink Celledgeuserthroughput,coverage,deploymentflexibility

Furtherreductionofdelay AS/NASparallelprocessingforreductionofCPlanedelay

Relaying

Type1relays

create

aseparate

cell

and

appear

as

Rel.

8LTE

eNB to

Rel.

8LTE

UEs

Coverage,costeffectivedeployment

*Seeappendix1inthisslideset forfurtherinformationonLTEAdvancedtechnologies

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SelfEvaluation

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3GPPSelfevaluationforLTEAdvanced

SelfevaluationforLTEAdvancedFDDRITandTDDRITwasconductedin3GPP

ThecapabilitiesaddressedherespanthecapabilitiesfromLTERel.8andextendthroughRel10andbeyond.Assuchthecapabilitiesrepresentarangeof

possiblefunctionalities

and

solutions

that

might

be

adoptedby3GPPintheworkonthefurtherspecificationsofLTE.

TheITU

R

report,

M.2133,

M.2134,

M.2135

and

IMT

ADV/3 were utilizedinthepreparationofthisselfevaluationreport.

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SummaryofSelfEvaluationResults

Theselfevaluationresultsshows:

ForLTERelease10,

FDDRITComponentmeetstheminimumrequirementsofall4requiredtestenvironments.TDDRITComponentmeetstheminimumrequirementsofall4requiredtestenvironments.ThecompleteSRITmeetstheminimumrequirementsofall4requiredtestenvironments.

BaselineconfigurationexceedingITURrequirementswithminimumextension

LTErelease

8fulfills

the

requirements

in

most

cases

(no

extensions

needed)

ExtensionstoMultiuserMIMOfromRelease8fulfillstherequirementsinsomescenarios(UrbanMacro/MicroDL)

Moreadvancedconfigurations,e.g.CoMP,withfurtherenhancedperformance

Many(18)companiesperticipatedinthesimulations High

reliability

Selfevaluationreportsarecapturedinsection16ofTechnicalReportTR36.912

*Seeappendix2inthisslidesetfordetailedinformationonselfevaluationresults

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ITURSubmissionDocuments

The3GPPsubmissiontotheITURincludesthefollowingtemplatesorganizedasanFDDRadioInterfaceTechnologycomponent(FDDRIT)and

asaTDD

Radio

Interface

Technology

component

(TDD

RIT).

Together

the

FDDRITandtheTDDRITcompriseaSetofRadioInterfaceTechnologies(SRIT).

The3GPPdevelopedFDDRITandTDDRITtemplatesincludecharacteristicsandlinkbudgettemplatesandcompliancetemplatesfor

services,spectrum,

and

technical

performance.

3GPPprovidesadditionalsupportinginformationindocument3GPP TR36.912v9.0.0;FeasibilitystudyforFurtherAdvancementsforEUTRA(LTEAdvanced)(Release9).

Templatesare

found

in

Annex

C of

Technical

Report

TR

36.912.

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StructureofITURSubmission

Documentsfrom

3GPP

RP-090736ITU-R submi ssion Cover page

plus

ZIP FILERP-090939

3GPP Submission Package for IMT-Advanced

RP-090743TR36.912 v9.0.0 Main Body

Additional supporting information on LTE-AdvancedDetailed self-evaluation results in section 16Following documents are captured in Annex A and C

RP-090744Annex A 3: Sel f -evaluat ion resul t s

Detailed simulation results provided from 18 companies

RP-090745Annex C1: Charact e r is t i cs templa te

Update version of ITU-R Document 5D/496-ERelevant 3GPP specifications listed at the end of thisdocumentTemplates for FDD RIT and TDD RIT contained separately

RP-090746Annex C2: L ink budget tem plate

Two Link budget template files for LOS and NLOSEach file includes link budget templates for five radioenvironments specified in ITU-R M.2135Templates for FDD RIT and TDD RIT contained separately

RP-090747Annex C3: Compl iance tem plate

This template shows LTE-Advanced fulfills all requirementsof IMT-Advanced in ITU-RTemplates for FDD RIT and TDD RIT contained separately

Overall ITU-R SubmissionITU-R 5D/564-E

Contributed by individual members of 3GPP

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Conclusion

TakingintoaccounttheIMTAdvancedstandardizationprocessinITUR,theprojectforLTEAdvanced,wasstartedin3GPPfromMarch2008builtupontheLTERelease8foundation

Inresponse

to

the

ITU

R

Circular

Letter

5/LCCE/2,

3GPP

provided

acomplete

submissionofLTERelease10andbeyond(LTEAdvanced)asacandidatetechnologyforIMTAdvanced

3GPPconductedaSelfEvaluationunderITURguidelinesofLTEAdvancedwithparticipationofmanycompaniesfromacrosstheworld

The

evaluation

results

show

that

for

LTE

Release

10

and

beyond(LTE

Advanced), FDDRITComponentmeetstheminimumrequirementsofall4requiredtestenvironments.

TDDRITComponentmeetstheminimumrequirementsofall4requiredtestenvironments.

ThecompleteSRITmeetstheminimumrequirementsofall4requiredtest

environments.

3GPPishappytoanswerquestionsfromexternalevaluationgroupsandtocooperatefurtherineachstepofIMTAdvancedprocessinITUR

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ContactPersonforQuestionsRelatedto

3GPPITU

R

Submission

TakehiroNakamura

NTTDOCOMO,

Inc

3GPPTSGRANChairman

Email:

[email protected]

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Appendix1

LTEAdvancedTechnologies

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Wider bandwidth transmission using carrier aggregation Entire system bandwidth up to, e.g., 100 MHz, comprises multiple basic

frequency blocks called component carriers (CCs)Satisfy requirements for peak data rate

Each CC is backward compatible with Rel. 8 LTEMaintain backward compatibility with Rel. 8 LTE

Carrier aggregation supports both contiguous and non-contiguousspectrums, and asymmetric bandwidth for FDD

Achieve flexible spectrum usage

Frequency

System bandwidth,e.g., 100 MHz

CC, e.g., 20 MHz

UE capabilities

100-MHz case

40-MHz case

20-MHz case(Rel. 8 LTE)

CarrierAggregation

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Downlink: OFDMA with component carrier (CC) based structurePriority given to reusing Rel. 8 specification for low-cost and

fast development

Mod.

Mapping

Channelcoding

HARQ

Mod.

Mapping

Channelcoding

HARQ

Mod.

Mapping

Channelcoding

HARQ

Mod.

Mapping

Channelcoding

HARQ

Transportblock

Transportblock

Transportblock

Transportblock

CC

One transport block (TB),which corresponds to achannel coding block and aretransmission unit, is mapped

within one CC Parallel-type transmission for

multi-CC transmission

Good affinity to Rel. 8 LTEspecifications

DownlinkMultipleAccessScheme

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Uplink: N-times DFT-Spread OFDMAchieve wider bandwidth by adopting parallel multi-CC transmission

Satisfy requirements for peak data rate while maintaining backwardcompatibility

Low-cost and fast development by reusing Rel. 8 specification

N-times DFT-Spread OFDM

CC

Freq.

CC

Parallel Rel. 8 LTEtransmission

PUCCH region

PUSCH(Physical uplink shared channel)

UplinkMultipleAccessScheme

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Extension up to 8-stream transmission Rel. 8 LTE supports up to 4-stream transmission, LTE-Advanced supports up to 8-

stream transmissionSatisfy the requirement for peak spectrum efficiency, i.e., 30 bps/Hz

Specify additional reference signals (RS) Two RSs are specified in addition to Rel. 8 common RS (CRS)

- Channel state information RS (CSI-RS)- UE-specific demodulation RS (DM-RS) UE-specific DM-RS, which is precoded, makes it possible to apply non-

codebook-based precoding UE-specific DM-RS will enable application of enhanced multi-userbeamforming such as zero forcing (ZF) for, e.g., 4-by-2 MIMO

Max. 8 streams

EnhancedMU-MIMO

Higher-order MIMO upto 8 streams

CSI feedback

EnhancedMultiantennaTechniquesin

Downlink

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Introduction of single user (SU)-MIMO up to 4-stream transmission Whereas Rel. 8 LTE does not support SU-MIMO, LTE-Advanced supports

up to 4-stream transmissionSatisfy the requirement for peak spectrum efficiency, i.e., 15 bps/Hz

Signal detection scheme with affinity to DFT-Spread OFDM for SU-MIMO Turbo serial interference canceller (SIC) is assumed to be used for eNB

receivers to achieve higher throughput performance for DFT-Spread OFDM

Improve user throughput, while maintaining single-carrier based signaltransmission

Max. 4 streams

SU-MIMO up to 4 streams

EnhancedMultiantennaTechniquesin

Uplink

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CoMP transmission schemes in downlink Joint processing (JP)

Joint transmission (JT): Downlink physical shared channel (PDSCH) istransmitted from multiple cells with precoding using DM-RS among coordinated

cells Dynamic cell selection: PDSCH is transmitted from one cell, which is

dynamically selected Coordinated scheduling/beamforming (CS/CB)

PDSCH is transmitted only from one cell site, and scheduling/beamforming iscoordinated among cells

CSI feedback (FB) Explicit CSI FB (direct channel FB) is investigated to conduct precise precoding, as well as

implicit CSI FB (precoding matrix index FB) based on Rel. 8 LTE Tradeoff between gain andFB signaling overhead

Coherent combining or

dynamic cell selection

Coordinated scheduling/beamformingJoint transmission/dynamic cell selection

CoMP TransmissioninDownlink

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CoMP reception scheme in uplink Physical uplink shared channel (PUSCH) is received at multiple

cells

Scheduling is coordinated among the cellsImprove especially cell-edge user throughput

Note that CoMP reception in uplink is implementation matter anddoes not require any change to radio interface

Receiver signal processing atcentral eNB (e.g., MRC, MMSEC)

Multipoint reception

CoMP ReceptioninUplink

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Type 1 relay Relay node (RN) creates a separate cell distinct from the donor cell UE receives/transmits control signals for scheduling and HARQ

from/to RN RN appears as a Rel. 8 LTE eNB to Rel. 8 LTE UEs

Deploy cells in the areas where wired backhaul is not available orvery expensive

eNB RNUE

Cell ID #x Cell ID #y

Higher node

Relaying

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Appendix2

DetailedSelfEvaluationResults

F ll b ff ffi i

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Fullbufferspectrumefficiency

Evaluateddownlink

schemes

Coordinatedscheduling/beamformingCoMP

(CS/CBCoMP)

JointprocessingCoMP

(JPCoMP)

SingleuserMIMO

(SUMIMO)MultiuserMIMO

(MUMIMO)Ex)

Ex)

Ex) Ex)

suppress

Variousschemeshavebeenevaluated

Singlelayerbeamforming

(SinglelayerBF)

Ex)

F ll b ff t ffi i

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Evaluateduplink

schemes

Singleinputmultipleoutput

(SIMO)

MultiuserMIMO

(MUMIMO)

SingleuserMIMO(SUMIMO) CoMP

Ex) Ex)

Ex) Ex)

Variousschemeshavebeenevaluated

F ll b ff ffi i

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DLcontrol

channel

overhead

assumption

DLcontrol Data

1subframe=1.0msec =14OFDMsymbols

L: OFDMsymbols(L=1,2,3)

Downlink performances have been evaluated taking into account thedownlink overhead for L = 1, 2 and 3 cases Dynamic assignment of L is supported already in the Rel. 8 specification.

Average overhead depends on the environments

D t il d S lf E l ti R lt

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Antennaconfiguration

d= 4 d=0.5

Antennaconfiguration(A) Antennaconfiguration(C)

Copolarizedantennas

separated4wavelengthsCopolarizedantennas

separated0.5wavelength

Crosspolarized+/ 45(deg)antennas

columnsseparated0.5wavelength

d= 0.5

Antennaconfiguration

(E)

Variousantennaconfigurationshavebeenevaluated


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Downlinkpeakspectrumefficiency

DLpeakspectrumefficiencyforFDD

30.68

layer

spatial

multiplexing

16.3Rel.84layerspatial

multiplexing

15ITURRequirement

Spectral

efficiency

[b/s/Hz]Scheme

DLpeakspectrumefficiencyforTDD

30.08layerspatial

multiplexing

16.0Rel.84layerspatial

multiplexing

15ITUR

Requirement

Spectralefficiency

[b/s/Hz]Scheme

LTE Rel. 8 fulfills ITU-R requirements Further improved performance can be achieved by using additional technology features(e.g., 8-layer spatial multiplexing)

Overhead assumptions DL control channel (L = 1) Cell and UE specific reference signal Physical broadcast channel andsynchronization signal

Uplinkpeakspectrumefficiency

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ULpeakspectralefficiencyforFDD

16.84layer

spatial

multiplexing

8.42layerspatial

multiplexing

6.75ITURRequirement

Spectralefficiency[b/s/Hz]Scheme

ULpeakspectralefficiencyforTDD

16.14layerspatial

multiplexing

8.12layerspatial

multiplexing

6.75ITUR

Requirement

Spectralefficiency[b/s/Hz]Scheme

LTE Rel. 8 fulfills ITU-R requirements Further improved performance can be achieved by using additional technology features(e.g.,4-layer spatial multiplexing)

Overhead assumptions UL control channel Physical random access channel

Controlplanelatency

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3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009 3GPP 2009 5250Total delay16Processing delay in UE (L2 and RRC)17

1.5Transmission of RRC Security Mode Command and Connection Reconfiguration (+TTIalignment)

16

4Processing delay in eNB (S1-C Uu)15

S1-C Transfer delay14

MME Processing Delay (including UE context retrieval of 10ms)13

S1-C Transfer delay12

Processing delay in eNB (Uu S1-C)11

1Transmission of RRC Connection Set-up complete10

12Processing delay in the UE (L2 and RRC)9

1Transmission of RRC Connection Set-up (and UL grant)84Processing delay in eNB (L2 and RRC)7

1Transmission of RRC and NAS Request6

5UE Processing Delay (decoding of scheduling grant, timing alignment and C-RNTIassignment + L1 encoding of RRC Connection Request)

5

3Preamble detection and transmission of RA response (Time between the end RACHtransmission and UEs reception of scheduling grant and timing adjustment)

3-4

1RACH Preamble2

0.5Average delay due to RACH scheduling period (1ms RACH cycle)1

Time (ms)DescriptionComponent

ITU-R Requirement: less than 100

LTE fulfills ITU-R requirements on control plane latency for idle to connected transition

Userplanelatency

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UE eNB

1.5 ms

1.5 ms

HARQ RTT

8 ms

1.5 ms

1.5 ms

TTI

1 ms

1 ms

UE eNB

1ms+FAt 1.5ms

TTI

1 ms

UE eNB

1.5ms1ms+ FAt

TTI

1 ms

(a) Downlink

(b) Uplink

4.8msec10%BLER

4.0msec0%BLER

6.035msec10%BLER

4.9msec0%BLER

FDD TDD

LTE fulfills ITU-R requirements on user planelatency

CellaverageandCelledgespectrumefficiency

Indoor environment (Downlink)

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Indoorenvironment(Downlink)

Downlink spectral efficiency (FDD), InH

0.220.240.265.56.16.633/0.1MUMIMO4x2(C)

0.190.210.234.14.54.8153/0.1Rel.8SUMIMO

4x2(A)

L=3L=2L=1L=3L=2L=1

Celledge[b/s/Hz]Cellaverage[b/s/Hz/cell]Numberof

samples

ITUR

Requirement

(Ave./Edge)

Schemeand

antenna

configuration

Downlink spectral efficiency (TDD), InH

0.200.220.245.66.16.743/0.1MUMIMO4x2(C)

0.190.200.224.14.44.7103/0.1Rel.8SUMIMO

4x2(A)

L=3L=2L=1L=3L=2L=1

Celledge[b/s/Hz]Cellaverage[b/s/Hz/cell]Number

of

samples

ITUR

Requirement

(Ave./Edge)

Schemeand

antenna

configuration

LTE Rel. 8 with SU-MIMO 4x2 (even with maximum DL control overhead (L = 3)) fulfillsITU-R requirements

Further improved performance can be achieved by using additional technology features(e.g., MU-MIMO 4x2)


Indoor environment (Uplink)

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Indoorenvironment(Uplink)

Uplink spectral efficiency (FDD), InH

0.254.352.25/0.07SUMIMO2x4(A)0.425.822.25

/0.07Rel.

8MU

MIMO

1x4

(A)

0.243.3102.25/0.07Rel.8SIMO1x4(C)

0.233.3132.25/0.07Rel.8SIMO1x4(A)

Celledge

[b/s/Hz]Cell

average

[b/s/Hz/cell]Number

of

samplesITU

RRequirement

(Ave./Edge)

Schemeand

antenna

configuration

Uplink spectral efficiency (TDD), InH

0.253.922.25/0.07SUMIMO2x4(A)

0.395.522.25/0.07Rel.8MUMIMO1x4(A)

0.233.172.25/0.07Rel.8SIMO1x4(C)

0.223.192.25/0.07Rel.8SIMO1x4(A)

Celledge

[b/s/Hz]

Cellaverage

[b/s/Hz/cell]

Numberof

samples

ITUR

Requirement

(Ave./Edge)

Schemeandantenna

configuration

LTE Rel. 8 with SIMO 1x4 fulfills ITU-R requirements Further improved performance can be achieved by using additional technology features(e.g., LTE Rel. 8 MU-MIMO 1x4, SU-MIMO 2x4)


Microcellularenvironment(Downlink)

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c oce u a e o e t ( o )

Downlinkspectralefficiency(FDD),UMi

0.130.140.153.53.84.242.6/0.075MUMIMO8x2(C/E)

0.120.130.143.74.14.512.6/0.075JPCoMP4x2(C)

0.0890.0990.113.03.33.652.6/0.075CS/CBCoMP4x2(C)

0.0990.110.122.83.13.432.6/0.075MUMIMO4x2(A)

0.0870.0960.102.93.23.582.6/0.075MUMIMO4x2(C)

L=3L=2L=1L=3L=2L=1

Celledge[b/s/Hz]Cellaverage[b/s/Hz/cell]Numberof

samples

ITUR

Requirement

(Ave./Edge)

Schemeandantenna

configuration

Downlinkspectralefficiency(TDD),UMi

0.0990.110.123.63.94.242.6/0.075MUMIMO8x2(C/E)

0.0850.0920.103.94.24.612.6/0.075JPCoMP4x2(C)

0.0860.0920.103.13.33.632.6/0.075CS/CBCoMP4x2(C)

0.0950.100.112.72.93.212.6/0.075MUMIMO4x2(A)

0.0890.0960.113.03.23.582.6/0.075MUMIMO4x2(C)L=3L=2L=1L=3L=2L=1


of

samples

ITUR

Requirement

(Ave./Edge)

Schemeandantenna

configuration

Extension of LTE Rel. 8 with MU-MIMO 4x2 (even with maximum DL control overhead(L = 3)) fulfills ITU-R requirements

Further improved performance can be achieved by using additional technology features(e.g., CS/CB-CoMP 4x2, JP-CoMP 4x2, and MU-MIMO 8x2)

Cellaverageand edgespectrumefficiency

Microcellularenvironment(Uplink)

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( p )

Uplinkspectralefficiency(FDD),UMi

0.0862.511.8/0.05MUMIMO2x4(A)

0.0772.521.8/0.05Rel.8MUMIMO1x4(A)

0.0731.9121.8/0.05Rel.8SIMO1x4(C)

Celledge

[b/s/Hz]

Cellaverage

[b/s/Hz/cell]

Numberof

samples

ITUR

Requirement

(Ave./Edge)

Schemeandantennaconfiguration

Uplinkspectralefficiency(TDD),UMi

0.0793.011.8/0.05MUMIMO1x8(E)

0.0682.811.8/0.05MUMIMO2x4(A)

0.0712.321.8/0.05Rel.8MUMIMO1x4(A)

0.0701.991.8/0.05Rel.8SIMO1x4(C)

Celledge

[b/s/Hz]

Cellaverage

[b/s/Hz/cell]

Numberof

samples

ITUR

Requirement

(Ave./Edge)


LTE Rel. 8 with SIMO 1x4 fulfills ITU-R requirements Further improved performance can be achieved by using additional technology features(e.g., LTE Rel. 8 MU-MIMO 1x4, MU-MIMO 2x4, and MU-MIMO 1x8)


Basecoverageurbanenvironment(Downlink)

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g ( )

Downlinkspectralefficiency(FDD),UMa

0.0840.0930.103.23.53.832.2/0.06CS/CBCoMP8x2(C)

0.0660.0730.0802.52.73.012.2/0.06JPCoMP4x2(A)

0.0670.0740.0812.42.62.962.2/0.06CS/CBCoMP4x2(C)

0.0660.0730.0792.42.62.872.2/0.06MUMIMO4x2(C)

L=3L=2L=1L=3L=2L=1

Celledge[b/s/Hz]Cellaverage

[b/s/Hz/cell]

Number

of

samples

ITUR

Requirement(Ave./Edge)

Schemeandantenna

configuration

Downlinkspectralefficiency(TDD),UMa

0.0870.0930.103.13.33.732.2/0.06CS/CBCoMP8x2(C/E)

0.0760.0820.0903.13.33.612.2/0.06JPCoMP4x2(C)

0.0700.0750.0832.42.62.942.2/0.06CS/CBCoMP4x2(C)

0.0670.0710.0792.42.62.972.2/0.06MUMIMO4x2(C)

L=3L=2L=1L=3L=2L=1


[b/s/Hz/cell]Numberof

samples

ITUR

Requirement

(Ave./Edge)

Schemeandantenna

configuration

Extension of LTE Rel. 8 with MU-MIMO 4x2 (even with maximum DL control overhead(L = 3)) fulfills ITU-R requirements Further improved performance can be achieved by using additional technology features(e.g., CS/CB-CoMP 4x2, JP-CoMP 4x2, and CS/CB-CoMP 8x2)


Basecoverageurbanenvironment(Uplink)

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Uplinkspectralefficiency(FDD),UMa

0.0992.111.4/0.03CoMP2x4(C)

0.0861.721.4/0.03CoMP1x4(A)

0.0621.5121.4/0.03Rel.8SIMO1x4 (C)

Celledge

[b/s/Hz]

Cellaverage

[b/s/Hz/cell]

Numberof

samples

ITUR

Requirement

(Ave./Edge)


Uplinkspectralefficiency(TDD),UMa

0.0762.711.4/0.03MUMIMO1x8(E)

0.0972.011.4/0.03CoMP2x4(C)

0.0901.911.4/0.03CoMP1x4(C)

0.0621.591.4/0.03Rel.8SIMO1x4(C)

Celledge

[b/s/Hz]

Cellaverage

[b/s/Hz/cell]

Numberof

samples

ITUR

Requirement

(Ave./Edge)


LTE Rel. 8 with SIMO 1x4 fulfills ITU-R requirements Further improved performance can be achieved by using additional technology features(e.g., CoMP 1x4, CoMP 2x4, and MU-MIMO 1x8)

CellaverageandCelledgeSpectrumEfficiency

HighSpeedEnvironment(Downlink)

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Downlinkspectralefficiency(FDD),RMa

0.110.120.133.43.74.111.1/0.04MUMIMO8x2(C)0.0900.0990.113.23.53.931.1

/

0.04MU

MIMO

4

x

2

(C)

0.0570.0630.0671.82.02.1141.1/0.04Rel.8SUMIMO

4x2(A)

0.0690.0760.0811.92.12.3151.1/0.04Rel.8SUMIMO

4x2(C)

L=3L=2L=1L=3L=2L=1


of

samples

ITUR

Requirement

(Ave./Edge)

Schemeandantenna

configuration

Downlinkspectralefficiency(TDD),RMa

0.0930.100.112.12.32.541.1/0.04Rel.8singlelayerBF8x2(E)

0.100.110.123.43.64.021.1/0.04MUMIMO 8x2(C/E)

0.0830.0890.0983.03.23.541.1/0.04MUMIMO 4x2(C)

0.0490.0530.0571.61.71.971.1/0.04Rel.8SUMIMO

4x2(A)

0.0630.0670.0721.81.92.081.1/0.04Rel.

8SU

MIMO

4x2(C)

L=3L=2L=1L=3L=2L=1


[b/s/Hz/cell]

Number

of

samples

ITUR

Requirement

(Ave./Edge)

Schemeandantenna

configuration

LTE Rel. 8 with SU-MIMO 4x2 (even with maximum DL control overhead (L = 3)) fulfills

ITU-R requirements Further improved performance can be achieved by using additional technology features(e.g., MU-MIMO 4x2, MU-MIMO 8x2, and LTE Rel. 8 single-layer BF 8x2)

CellaverageandCelledgeSpectrumEfficiency

HighSpeedEnvironment(Uplink)

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Uplinkspectralefficiency(FDD),RMa

0.132.320.7/0.015CoMP2x4(A)

0.0972.220.7/0.015Rel.8MUMIMO1x4(A)

0.0821.8110.7/0.015Rel.8SIMO1x4(C)

Celledge

[b/s/Hz]

Cellaverage

[b/s/Hz/cell]

Numberof

samples

ITUR

Requirement

(Ave./Edge)


Uplinkspectralefficiency(TDD),RMa

0.102.610.7/0.015MUMIMO1x8(E)

0.152.510.7/0.015CoMP2x4(A)

0.0932.120.7/0.015Rel.8MUMIMO1x4(A)

0.0801.880.7/0.015Rel.8SIMO1x4(C)

Celledge

[b/s/Hz]

Cellaverage

[b/s/Hz/cell]

Numberof

samples

ITUR

Requirement

(Ave./Edge)


LTE Rel. 8 with SIMO 1x4 fulfills ITU-R requirements Further improved performance can be achieved by using additional technology features(e.g., CoMP 2x4, and MU-MIMO 1x8)

VoIPresults(FDD)

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VoIP

capacity

for

FDD

94330HighSpeed

69340UrbanMacro

75340UrbanMicro

131350IndoorAntennaconfiguration

(C)

91330HighSpeed

68340UrbanMacro

80340UrbanMicro


(A)

Capacity [User/MHz/Cell]NumberofsamplesITURrequirementEnvironmentAntenna configuration

Evaluatedschemes

DL:Rel.8(4x2,1x2)

UL:Rel.8(1x4)

LTE Rel. 8 fulfills ITU-R requirements for all the environments

VoIPresults(TDD)

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VoIPcapacity

for

TDD

92330HighSpeed

67340UrbanMacro

74340UrbanMicro


(C)

86230HighSpeed

65240UrbanMacro

74240UrbanMicro


(A)

Capacity [User/MHz/Cell]NumberofsamplesITURrequirementEnvironmentAntennaconfiguration

Evaluatedschemes

DL:Rel.8(4x2or1x2)

UL:Rel.8(1x4)


Mobilityresults(FDD)

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Mobilitytraffic

channel

link

data

rates

for

FDD

1.4545.420.25HighSpeed

1.3644.30

0.55UrbanMacro

1.4244.540.75UrbanMicro

3.15413.891.0IndoorAntenna

configuration

1 x4,LOS


1.0874.300.55UrbanMacro



configuration

1 x4,

NLOS

FDDULSpectrum

efficiency[b/s/Hz]

Numberof

samples

MedianSINR

[dB]

ITUR

requirement

EnvironmentLOS/NLOS

Evaluatedschemes

Rel.8UL(1x4)


Mobilityresults(TDD)

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MobilitytrafficchannellinkdataratesforTDD


1.3624.30

0.55UrbanMacro



configuration

1 x4,LOS


0.9544.300.55UrbanMacro



configuration

1 x4,

NLOS

TDDULSpectrum

efficiency[b/s/Hz]

Numberof

samples

MedianSINR

[dB]

ITUR

requirement

EnvironmentLOS/NLOS

Evaluatedschemes

Rel.8UL(1x4)
