Digital cellular telecommunications system (Phase 2+) (GSM); Half rate speech; Substitution and muting of lost frames for half rate speech traffic channels (GSM 06.21 version 7.0.1 Release 1998)

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Digitalni celični telekomunikacijski sistem (faza 2+) – Govor s polovično hitrostjo – Nadomeščanje in utišanje izgubljenih okvirov pri prometnih kanalih s polovično hitrostjo govora (GSM 06.21, različica 7.0.1, izdaja 1998)

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Status
Published
Publication Date
30-Nov-2003
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Dec-2003
Due Date
01-Dec-2003
Completion Date
01-Dec-2003
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SIST EN 300 970 V7.0.1:2003
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital cellular telecommunications system (Phase 2+) (GSM); Half rate speech; Substitution and muting of lost frames for half rate speech traffic channels (GSM 06.21 version 7.0.1 Release 1998)33.070.50Globalni sistem za mobilno telekomunikacijo (GSM)Global System for Mobile Communication (GSM)ICS:Ta slovenski standard je istoveten z:EN 300 970 Version 7.0.1SIST EN 300 970 V7.0.1:2003en01-december-2003SIST EN 300 970 V7.0.1:2003SLOVENSKI

STANDARD
SIST EN 300 970 V7.0.1:2003

ETSIEN300970V7.0.1(2000-01)EuropeanStandard(Telecommunicationsseries)Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;Substitutionandmutingoflostframesforhalfratespeechtrafficchannels(GSM06.21version7.0.1Release1998)GLOBALSYSTEMFORMOBILECOMMUNICATIONSRSIST EN 300 970 V7.0.1:2003

ETSIETSIEN300970V7.0.1(2000-01)2(GSM06.21version7.0.1Release1998)ReferenceREN/SMG-110621Q7KeywordsDigitalcellulartelecommunicationssystem,GlobalSystemforMobilecommunications(GSM)ETSIPostaladdressF-06921SophiaAntipolisCedex-FRANCEOfficeaddress650RoutedesLucioles-SophiaAntipolisValbonne-FRANCETel.:+33492944200Fax:+33493654716SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/88Internetsecretariat@etsi.frIndividualcopiesofthisETSIdeliverablecanbedownloadedfromhttp://www.etsi.orgIfyoufinderrorsinthepresentdocument,sendyourcommentto:editor@etsi.frImportantnoticeThisETSIdeliverablemaybemadeavailableinmorethanoneelectronicversionorinprint.Inanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF).Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.CopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.SIST EN 300 970 V7.0.1:2003

ETSIETSIEN300970V7.0.1(2000-01)3(GSM06.21version7.0.1Release1998)ContentsIntellectualPropertyRights................................................................................................................................4Foreword.............................................................................................................................................................41Scope........................................................................................................................................................62References................................................................................................................................................63Definitionsandabbreviations..................................................................................................................63.1Definitions..........................................................................................................................................................63.2Abbreviations.....................................................................................................................................................64General.....................................................................................................................................................75Requirements............................................................................................................................................75.1ErrordetectionandconcealmentincaseofunreliablespeechorSIDframes....................................................75.1.1Errordetection..............................................................................................................................................75.1.2Outputsignalconcealment............................................................................................................................75.2FramesubstitutionandmutingincaseoflostspeechorSIDframes..................................................................75.2.1Firstandsecondlostspeechframe................................................................................................................75.2.2Subsequentlostspeechframes......................................................................................................................85.2.3FirstandsecondlostSIDframe....................................................................................................................85.2.4SubsequentlostSIDframes..........................................................................................................................86Examplesolutions....................................................................................................................................86.1Examplesolutionforerrordetectionincaseofunreliableframes.....................................................................86.2Examplesolutionforoutputsignalconcealmentincaseofunreliableframes...................................................86.3Examplesolutionforsubstitutionandmutingoflostspeechframes..................................................................86.4ExamplesolutionforsubstitutionandmutingoflostSIDframes......................................................................9AnnexA(informative):ChangeRequestHistory...............................................................................10History..............................................................................................................................................................11SIST EN 300 970 V7.0.1:2003

ETSIETSIEN300970V7.0.1(2000-01)4(GSM06.21version7.0.1Release1998)IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinSR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinSR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbytheSpecialMobileGroup(SMG).ThepresentdocumentdefinesaframesubstitutionandmutingprocedurewhichshallbeusedbytheReceive(RX)DiscontinuousTransmission(DTX)handlerforthehalfratespeechtrafficchannelswithinthedigitalcellulartelecommunicationssystem.Thepresentdocumentispartofaseriescoveringthehalfratespeechtrafficchannelsasdescribedbelow:GSM06.02"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;Halfratespeechprocessingfunctions".GSM06.20"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;Halfratespeechtranscoding".GSM06.21"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;Substitutionandmutingoflostframesforhalfratespeechtrafficchannels".GSM06.22"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;Comfortnoiseaspectsforhalfratespeechtrafficchannels".GSM06.41"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;DiscontinuousTransmission(DTX)forhalfratespeechtrafficchannels".GSM06.42"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;VoiceActivityDetector(VAD)forhalfratespeechtrafficchannels".GSM06.06"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;ANSI-CcodefortheGSMhalfratespeechcodec".GSM06.07"Digitalcellulartelecommunicationssystem(Phase2+);Halfratespeech;TestsequencesfortheGSMhalfratespeechcodec".ThecontentsofthepresentdocumentissubjecttocontinuingworkwithinSMGandmaychangefollowingformalSMGapproval.ShouldSMGmodifythecontentsofthepresentdocumentitwillbere-releasedwithanidentifyingchangeofreleasedateandanincreaseinversionnumberasfollows:Version7.x.ywhere:7indicatesRelease1998ofGSMPhase2+.xtheseconddigitisincrementedforallchangesofsubstance,i.e.technicalenhancements,corrections,updates,etc.ythethirddigitisincrementedwheneditorialonlychangeshavebeenincorporatedinthespecification.SIST EN 300 970 V7.0.1:2003

ETSIETSIEN300970V7.0.1(2000-01)5(GSM06.21version7.0.1Release1998)NationaltranspositiondatesDateofadoptionofthisEN:31December1999DateoflatestannouncementofthisEN(doa):31March2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):30September2000DateofwithdrawalofanyconflictingNationalStandard(dow):30September2000SIST EN 300 970 V7.0.1:2003

ETSIETSIEN300970V7.0.1(2000-01)6(GSM06.21version7.0.1Release1998)1ScopeThepresentdocumentdefinesaframesubstitutionandmutingprocedurewhichshallbeusedbytheReceive(RX)DiscontinuousTransmission(DTX)handlerwhenoneormorelostorunreliablespeechorSIlenceDescriptor(SID)framesarereceivedfromtheRadioSubSystem(RSS).TherequirementsofthepresentdocumentaremandatoryforimplementationinallGSMBaseStationSystems(BSS)sandMobileStations(MS)scapableofsupportingthehalfratespeechtrafficchannel.2ReferencesThe

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