geran howell

7/27/2019 Geran Howell

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

3GPP 2009 1

Andrew HowellTSG GERAN Chairman

Update on the Evolution of theUpdate on the Evolution of theGERAN Family of StandardsGERAN Family of Standards

(GSM, GPRS, EDGE)(GSM, GPRS, EDGE)


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3GPP 2009 2

Contents

OverviewofTSGGERAN

Release7Overview

Release8Overview

Release9Outlineofongoingwork

Release10Outlineofongoingwork

Conclusion

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3GPP 2009 3

OverviewofTSGGERAN(1/3)

ObjectivesandOrganisation

TSGGERANObjectives:

GERAN=GSM/EDGERadioAccessNetwork Responsibleforthespecificationoftheradioaspectsof

theGSM/EDGEtechnologiesandtheirevolutions.

TSGGERANOrganisation: Threesubgroups:

WorkingGroup1:RadioAspects(andBTStesting);

WorkingGroup2:ProtocolAspects;

WorkingGroup3:TerminalTesting.

Around120 130delegatespermeeting.

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


LeadershipofTSGGERAN

TSGGERANofficialsare:

Chairman: MrAndrewHowell

ResearchinMotionUKLtd/ETSI

Vicechairs: DrJongsooChoi SamsungElectronicsCoLtd/TTA

MrZhixiWang

HuaweiTechnologiesCoLtd/ATIS

MrLeoPatanapongpibul

VodafoneGroupPlc/ETSI

MCCsupport:PaoloUsai(MCC)


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LeadershipofTSGGERANWGs

TheleadershipoftheTSGGERANWGsis:

TSGGERANWG1: Chairman:MrWernerKreuzer

(ResearchinMotionUKLtd/ETSI)

MCCsupport:PaoloUsai(MCC)

TSGGERANWG2: Chairman:MrGuillaumeSbire

(NokiaCorporation/ETSI)

MCCsupport:GertThomasen(MCC)

TSGGERANWG3: Chairman:MrStoyanBaev

(SamsungElectronicsCoLtd/TTA)

MCCsupport:IngbertSigovich(MCC)

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Release7Overview(1/3)

Inclusionoflower700MHzintotheGERANspecifications(GSM710) uplink:728746MHz;downlink698716MHz

Additionofnew

frequency

band

toGSM

(TGSM810): uplink806821MHz;downlink:851866MHz

AdvancedGlobalNavigationSatelliteSystem(AGNSS): introducesAssistedGalileoinadditiontoAssistedGPS.

genericsolutionprovidedtoallowforintroductionofothersatelliteconstellationsinthefuture.

AssistedGPS(AGPS)minimumperformance: specifiesaminimumperformancefortheGPSreceiverembeddedin mobile

stationsusingAGPSoverGERAN.

EnhancementsofVoiceGroupCallService(VGCS)forpublicsecurityofficials(e.g.,police,firebrigade,using"public"GSMnetworks): endtoendciphering;

SMSoverVGCS;

emergencyhandling.

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AinterfacecontrolplanesignallingoverIP: AinterfacesignallingoverM3UA/SCTP/IP.

DualTransferMode(DTM)handover: allowssimultaneoushandoverofCSandPSresourcesforagivenenduser.

PSHandoverbetweenGERAN/UTRANmodeandGenericAccessNetwork(GAN)mode:

complementstheRel6GANwithPShandoversbetweentheunlicensedradiolinkandGSM/UMTSforimprovedservicecontinuity(e.g.,whenleavinghome).

MSReceiveDiversity(a.k.a.DARPPhaseII): improveddownlinkperformance(qualityandspectralefficiency)viauseofdualantennaterminals.

DownlinkDualCarrier: supportofsimultaneoustransmissionstoagivenuserovertwoindependentGSMcarriersonthe

downlink,enablingtodoublethedownlinkthroughputforthisuser.

LatencyReductions: reducesterminaltonetworkroundtriptimethroughtheuseoftwotechniques:

factack/nackreporting;

reducedTransmissionTimeInterval(RTTI=10msinsteadof20ms).

pavesthewayforsupportofVoIPoverGERAN

bettersupportofdelaysensitive"conversational"typeofapplications

improvesthroughputofTCPbasedapplicationsduetothereductionoftheroundtriptime.

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EGPRS2UL: additionofQPSK,16QAM,32QAMandhighersymbolrateinuplink

comesintwoflavours:

versionA(EGPRS2AUL):GMSK,8PSK,16QAM,legacysymbolrate271

ksymbols/s;

versionB(EGPRS2BUL):GMSK,QPSK,16QAMand32QAM,highersymbolrate

325ksymbols/s.

EGPRS2DL: introductionofQPSK,16QAM,32QAM,highersymbolrateandturbocodingin

downlink

comesintwoflavours:

versionA(EGPRS2ADL):GMSK,8PSK,16QAM,32QAM,turbocodes,legacy

symbolrate271ksymbols/s;

versionB(EGPRS2BDL):GMSK,QPSK,16QAM,32QAM,turbocodes,higher

symbolrate325ksymbols/s.

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GERANLTEinterworking:

definescellreselectionandCS/PShandoverbetweenGERANandLTE.

MulticarrierBTS:

throughtherelaxationofcertainGSMBTSradiorequirements,allowsto

conveyseveralGSMcarrierswithasinglewidebandtransceiver,inorderto

bringcapexandopexsavingstotheoperators.

FeasibilitystudyonMUROS(MultiUserReusingOneSlot):

aimistodoublevoicecapacityofGERANperBTStransceiverbysharinga

singletimeslotbetweenupto4users;

Feasibility

study

on

Optimized

Transmit

Pulse

Shape

for

downlinkEGPRS2B:

analysisofawiderBTStransmitmasktofurtherincreasethroughputsof

EGPRS2Bdownlinkwhilstcheckingpotentialimpactonlegacybearersusing

legacyterminals.

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AinterfaceoverIP: supportofAoverIP(aftersupportofGboverIPinRel4);

allowstomovethetranscodersfromtheBSStotheCoreNetwork(MGWs),allowingcapexandopexsavingsfortheoperators.

GANenhancements(GANIumode): allowstoconnecttheGANCto3GCoreNetworksviatheIuinterface.

EnhancementsforVGCSApplications:

allowstosend/receiveasmallamountofdatato/fromgroupmembers; allowstotransfercriticaldatawithin500mswithoutimpacting voicequality

ofthegroupcall;

gathersinformationontheidentityofcurrentlistenersinthegroupcall.

UTDOAenhancements: allowstheMStobepoweredatmaximumpowerduringthe(brief)locationprocedure,inordertoimprovelocationaccuracy.

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AGNSSperformanceandtestingprocedures:

SpecifiesaminimumperformancefortheGalileoreceiverembeddedinmobilestationsusingAGNSSoverGERANanddefinesatestframeworkforterminalsthatcouldbeextendedtothesupportofotherconstellations.

AdditionalNavigationSatelliteSystems(ANSS)forLCS:

ComplementstheGPSandGalileoconstellationswithother

constellationssuchas: GLONASS:

:

ModernizedGPS

QuasiZenithSatelliteSystem(QZSS) SatelliteBasedAugmentationSystems

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Release9Outlineofongoingwork(1/3)

AGNSSminimumperformances

Clarificationsrelatingtosatelliteconstellationandassistancedata.

RFRequirementsforMulticarrierandMultiRATBS,GERANpart LookingatalignmentofblockingrequirementsinmultiRAToperationandinGSM

singleRAToperationforMSRequipment.

ReviewofGERANrelatedchangestoTS37.104,TS37.113,TS37.141,andTR37.900.

VoiceservicesoverAdaptiveMultiuserchannelsonOneSlot(VAMOS) ShiftedSACCHagreedforVAMOSIImobilestations.

FirstsetofperformancerequirementsforVAMOSIMSpresented

Openissues

DecisiononsignallingofVAMOScapabilityinuplinkandVAMOSmodeindownlink

Specificationofmaximumsubchannelpowerimbalanceratio(SCPIR)valuefordownlink

Decisiononoptimisedpulseshapeindownlink.

SpecificationofTXandRXperformancerequirementsindownlinkforVAMOSIandVAMOSII

mobilesandforBSSinuplink.


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HomeNBandHomeeNBenhancements

CSGreporting:Agreedworkingassumptions ThereportedCSGcellisthestrongestcellonafrequency.

ThethresholdsforCSGreportingaredifferentfromtheonesfor macro

cell.

Ec/N0plusRSCP,RSCP,RSRQplusRSRP,andRSRQplusRSRPareusedtosetthresholdsforCSGreportingforUTRANFDD,UTRANTDD,EUTRAN

FDD,andEUTRANTDDrespectively.

HandovertoCSGcells Changeshavebeenidentifiedandtechnicallyendorsedbutwillbe

resubmittedforapprovalonceafullsetofchangesisavailable forH(e)NB

Enhancements

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BSCCBCInterface

SupervisionoftheBSC/CBCinterfaceisnowcompletewiththedefinitionofa

KeepAliveprocedurein3GPPTS48.049 Ongoingimprovementsalsobeinglookedat

GeneralTechnicalEnhancementsandImprovements

PowerlevelforRACH ClarificationofDTMsupportforEFTAandinterpretationofmultislotclass

parametersforEFTA

Reviewoncellreselectionenhancements.

SelfOptimisingNetworks(SON)

MixofRTTI+BTTIforagivenTBF(MTTI)

EnhancedFlexibleTimeslotAllocation(EFTA)


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Release10outlineofongoingwork

(1/2)Somegeneralobservations:

AsignificantpartoftheworkofTSGGERANistomaintaincompatibilityoftheGSMbasedsystemswiththeother

systemsbeingevolvedby3GPPandthisworkcontinues

withintheRelease10setofspecifications.

Fortheforeseeablefuture,especiallygiventhe

widespreaddeploymentofGSMbasedsystems,itis

expectedthatGERANwillneedtocontinuetoadaptto

ensurecompatibilityofexistingequipmentwiththe

evolvingnetworks

GSMbasedsystemscontinuetoprovideanexcellentlow

costplatformformanydevelopingservices

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Release10outlineofongoingwork

(2/2)InadditiontotheongoingworkofkeepingGERAN

basedsystemscompatiblewithothersystems(i.e.UMTS,LTE)otherareasofworkwithinRelease10

include:

LocalCallLocalSwitch GERANImprovementsforMachinetypeCommunications

TechnicalEnhancementsandImprovements,suchas:

DynamicTimeslotReductiona.k.a.DTR

OptimizedDRXmode

EnhancedMultiplexingforsingleRLCentitya.k.a.EMSR

PrecodedEGPRS

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Conclusions

TheGSMradiointerfacehasevolvedoverthepastfewyears

andwillcontinuetoevolveinthefuturetobringadditional

featuresandimprovementsattractivetobothoperatorsand

subscribers.

Evolutionisprimarilyfocusedaroundthefollowingareas:

Interworkingwithotheraccesstechnologies(e.g.LTE);

Increasingthroughputs;

Increasingcapacities(improvedspectralefficiencyandhardwareefficiency);

Supportforadditionalfrequencybands; Supportof(additional)locationtechniques;

SupportofIPbasedinterfaces.

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Conclusions(cont)

TheongoingworkwithinTSGGERANcontinuesto

increasethesuitabilityofGSM/GERAN: forstandalonenetworks;

fornetworksusedinconjunctionwithotherradioaccess

technologies(UMTS,LTE...)toprovideglobalcoveragewhilstallowingexcellentservicecontinuity;

asafutureproofplatformprovidingasmoothmigration

pathtowardsother3GPPbasedsystems(UMTS,LTE).GSMisanaliveandevolvingtechnologywhichwill

continuetoprovidefortheneedsofoperatorsfor

manyyearstocome18

geran howell

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