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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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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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3GPP 2009 Mobile World Congress, Barcelona, 19th February 2009 3GPP 2009 6
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
Technicalspecifications
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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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
Technicalspecifications
2009 2010 20112007 2008
ITU-R WP5Dmeetings
Proposals
Evaluation
Consensus
Specification
WRC-07
Circular letterto inviteproposals
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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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
Technicalspecifications
2009 2010 20112007 2008
ITU-R WP5Dmeetings
Proposals
Evaluation
Consensus
Specification
WRC-07
Circular letterto inviteproposals
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:
nakamurata@nttdocomo.co.jp
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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)
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Fullbufferspectrumefficiency
Evaluateduplink
schemes
Singleinputmultipleoutput
(SIMO)
MultiuserMIMO
(MUMIMO)
SingleuserMIMO(SUMIMO) CoMP
Ex) Ex)
Ex) Ex)
Variousschemeshavebeenevaluated
F ll b ff ffi i
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Fullbufferspectrumefficiency
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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DetailedSelfEvaluationResults
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
DetailedSelfEvaluationResults
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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)
CellaverageandCelledgespectrumefficiency
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)
CellaverageandCelledgespectrumefficiency
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
Celledge[b/s/Hz]Cellaverage[b/s/Hz/cell]Number
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)
Schemeandantennaconfiguration
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)
CellaverageandCelledgespectrumefficiency
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
Celledge[b/s/Hz]Cellaverage
[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)
CellaverageandCelledgespectrumefficiency
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)
Schemeandantennaconfiguration
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)
Schemeandantennaconfiguration
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
Celledge[b/s/Hz]Cellaverage[b/s/Hz/cell]Number
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
Celledge[b/s/Hz]Cellaverage
[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)
Schemeandantennaconfiguration
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)
Schemeandantennaconfiguration
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
140350IndoorAntennaconfiguration
(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
130350IndoorAntennaconfiguration
(C)
86230HighSpeed
65240UrbanMacro
74240UrbanMicro
137250IndoorAntennaconfiguration
(A)
Capacity [User/MHz/Cell]NumberofsamplesITURrequirementEnvironmentAntennaconfiguration
Evaluatedschemes
DL:Rel.8(4x2or1x2)
UL:Rel.8(1x4)
LTE Rel. 8 fulfills ITU-R requirements for all the environments
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
1.2275.420.25HighSpeed
1.0874.300.55UrbanMacro
1.2174.540.75UrbanMicro
2.56713.891.0IndoorAntenna
configuration
1 x4,
NLOS
FDDULSpectrum
efficiency[b/s/Hz]
Numberof
samples
MedianSINR
[dB]
ITUR
requirement
EnvironmentLOS/NLOS
Evaluatedschemes
Rel.8UL(1x4)
LTE Rel. 8 fulfills ITU-R requirements for all the environments
Mobilityresults(TDD)
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MobilitytrafficchannellinkdataratesforTDD
1.3825.420.25HighSpeed
1.3624.30
0.55UrbanMacro
1.4824.540.75UrbanMicro
3.11213.891.0IndoorAntenna
configuration
1 x4,LOS
1.0345.420.25HighSpeed
0.9544.300.55UrbanMacro
1.1444.540.75UrbanMicro
2.63413.891.0IndoorAntenna
configuration
1 x4,
NLOS
TDDULSpectrum
efficiency[b/s/Hz]
Numberof
samples
MedianSINR
[dB]
ITUR
requirement
EnvironmentLOS/NLOS
Evaluatedschemes
Rel.8UL(1x4)
LTE Rel. 8 fulfills ITU-R requirements for all the environments
Recommended