SIST EN 300 911 V8.4.1:2003
(Main)Digital cellular telecommunications system (Phase 2+) (GSM); Radio subsystem link control (GSM 05.08 version 8.4.1 Release 1999)
General Information
- Abstract
05.08; s31b; CR: A242; R99; 8.3.1; 8.4.0; Inter System Handover and Cell re-selection 05.08; s31b; CR: A248; R99; 8.3.1; 8.4.0; Removal of parameter CELL_RESELECT_PARAM_IND 05.08; s31b; CR: A270; R99; 8.3.1; 8.4.0; Procedures for inter-system handover (cdma2000) 05.08; s31b; CR: A252; R99; 8.3.1; 8.4.0; Correction to mapping of interference levels 05.08; s31b; CR: A253; R99; 8.3.1; 8.4.0; Clarification on Abnormal Cell Reselection 05.08; s31b; CR: A269; R99; 8.3.1; 8.4.0; System Information refreshing in idle mode 05.08; s31b; CR: A271; R99; 8.3.1; 8.4.0; MS behaviour under network controlled cell reselection 05.08; s31b; CR: A272; R99; 8.3.1; 8.4.0; Cell selection parameter acquisition in Packet Transfer mode 05.08; s31b; CR: A273; R99; 8.3.1; 8.4.0; BTS Output Power 05.08; s31b; CR: A274; R99; 8.3.1; 8.4.0; Default value for GPRS_MS_TXPWR_MAX_CCH at cell re-selection 05.08; s31b; CR: A249; R99; 8.3.1; 8.4.0; Clarification of Cell Bar Qualify 2 parameter 05.08; s31b; CR: A266; R99; 8.3.1; 8.4.0; Fast inband signalling: E-IACCH 05.08; s31b; CR: A268; R99; 8.3.1; 8.4.0; EGPRS Link Quality measurements
- 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
Overview
SIST EN 300 911 V8.4.1:2003 defines the radio subsystem link control for digital cellular telecommunications systems (GSM Phase 2+), with specific requirements for mobile stations (MS), base station systems (BSS), and mobile switching centres (MSC). The standard outlines procedures and criteria for maintaining and optimizing radio links in both GSM 900 and DCS 1800 bands. As part of the European Telecommunications Standards Institute (ETSI) suite, this release covers critical processes such as handover, radio frequency (RF) power control, cell selection/re-selection, and radio link failure management. The specification contributes to robust and efficient GSM network operations, supporting seamless user experiences and effective network management.
Key Topics
- Handover Procedures:
- Handles transitions of active calls between cells or frequency bands for sustained connectivity and call quality.
- Specifies measurement and reporting processes required for both intra-system (within GSM) and inter-system handovers, including towards technologies like cdma2000 and UTRAN.
- Cell Selection and Re-selection:
- Details the algorithmic processes for initial cell selection and ongoing cell re-selection during idle and data transfer modes.
- Clarifies exceptional cases, such as abnormal or network-controlled cell reselection, and procedures specific to GPRS mode.
- RF Power Control:
- Outlines methods for adaptive transmit power control by the MS and, optionally, the BSS, aiming to optimize uplink and downlink performance while minimizing co-channel interference.
- Includes strategies for open loop, closed loop, and quality-based power control.
- Radio Link Failure Handling:
- Defines criteria and response procedures when a radio link becomes unsatisfactory, ensuring ongoing calls are either re-established or appropriately released.
- Measurement Requirements:
- Specifies various signal and quality measurements, including those for EGPRS and discontinuous transmission, and mandates reporting schemes for maintaining link quality.
- Support for Multimode and Multiband Devices:
- Provides allowances for devices supporting handovers and cell selections not only within GSM but also between GSM and other radio access technologies.
- Special Modes:
- Addresses requirements for Group Receive Mode, Cordless Telephony System (CTS), and COMPACT mode functionality.
Applications
This standard is vital for the design, deployment, and operation of GSM mobile networks. Key application areas include:
- Network Operators:
- Enables seamless handover and power optimization for mobile subscribers, reducing dropped calls and improving spectrum efficiency.
- Supports advanced network management through configurable cell selection/re-selection parameters and prioritization schemes.
- Device Manufacturers:
- Ensures mobile stations and base station equipment are compliant with GSM performance and interoperability requirements.
- Facilitates development of multimode and multiband devices that can transition between GSM, GPRS, CTS, UTRAN, and cdma2000 networks.
- System Integrators and Test Laboratories:
- Provides reference procedures and criteria for validating radio link control mechanisms, ensuring systems are robust and standards-compliant.
- Telecom Regulatory and Standards Bodies:
- Acts as a reference for aligning national standards with established ETSI / GSM requirements, aiding in harmonization and international interoperability.
Related Standards
For comprehensive GSM implementation and operation, the following standards are relevant:
- GSM 01.04: Abbreviations and acronyms
- GSM 03.03, 03.09, 03.22: Numbering, handover procedures, and idle/group receive mode operations
- GSM 04.04, 04.06, 04.08: MS-BSS interface and radio interface specifications
- GSM 05.02, 05.05, 05.10: Radio path multiplexing, transmission/reception, and subsystem synchronization
- GSM 03.64: GPRS radio interface overall description
- GSM 03.52: CTS radio interface functions
- TIA/EIA/IS-2000-5-A, TIA/EIA/IS-833: cdma2000 and multi-carrier GSM interworking
SIST EN 300 911 V8.4.1:2003 serves as a cornerstone for radio subsystem link control within GSM networks, underpinning reliable, high-quality mobile telecommunications across Europe and internationally.
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Frequently Asked Questions
SIST EN 300 911 V8.4.1:2003 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Digital cellular telecommunications system (Phase 2+) (GSM); Radio subsystem link control (GSM 05.08 version 8.4.1 Release 1999)". This standard covers: 05.08; s31b; CR: A242; R99; 8.3.1; 8.4.0; Inter System Handover and Cell re-selection 05.08; s31b; CR: A248; R99; 8.3.1; 8.4.0; Removal of parameter CELL_RESELECT_PARAM_IND 05.08; s31b; CR: A270; R99; 8.3.1; 8.4.0; Procedures for inter-system handover (cdma2000) 05.08; s31b; CR: A252; R99; 8.3.1; 8.4.0; Correction to mapping of interference levels 05.08; s31b; CR: A253; R99; 8.3.1; 8.4.0; Clarification on Abnormal Cell Reselection 05.08; s31b; CR: A269; R99; 8.3.1; 8.4.0; System Information refreshing in idle mode 05.08; s31b; CR: A271; R99; 8.3.1; 8.4.0; MS behaviour under network controlled cell reselection 05.08; s31b; CR: A272; R99; 8.3.1; 8.4.0; Cell selection parameter acquisition in Packet Transfer mode 05.08; s31b; CR: A273; R99; 8.3.1; 8.4.0; BTS Output Power 05.08; s31b; CR: A274; R99; 8.3.1; 8.4.0; Default value for GPRS_MS_TXPWR_MAX_CCH at cell re-selection 05.08; s31b; CR: A249; R99; 8.3.1; 8.4.0; Clarification of Cell Bar Qualify 2 parameter 05.08; s31b; CR: A266; R99; 8.3.1; 8.4.0; Fast inband signalling: E-IACCH 05.08; s31b; CR: A268; R99; 8.3.1; 8.4.0; EGPRS Link Quality measurements
05.08; s31b; CR: A242; R99; 8.3.1; 8.4.0; Inter System Handover and Cell re-selection 05.08; s31b; CR: A248; R99; 8.3.1; 8.4.0; Removal of parameter CELL_RESELECT_PARAM_IND 05.08; s31b; CR: A270; R99; 8.3.1; 8.4.0; Procedures for inter-system handover (cdma2000) 05.08; s31b; CR: A252; R99; 8.3.1; 8.4.0; Correction to mapping of interference levels 05.08; s31b; CR: A253; R99; 8.3.1; 8.4.0; Clarification on Abnormal Cell Reselection 05.08; s31b; CR: A269; R99; 8.3.1; 8.4.0; System Information refreshing in idle mode 05.08; s31b; CR: A271; R99; 8.3.1; 8.4.0; MS behaviour under network controlled cell reselection 05.08; s31b; CR: A272; R99; 8.3.1; 8.4.0; Cell selection parameter acquisition in Packet Transfer mode 05.08; s31b; CR: A273; R99; 8.3.1; 8.4.0; BTS Output Power 05.08; s31b; CR: A274; R99; 8.3.1; 8.4.0; Default value for GPRS_MS_TXPWR_MAX_CCH at cell re-selection 05.08; s31b; CR: A249; R99; 8.3.1; 8.4.0; Clarification of Cell Bar Qualify 2 parameter 05.08; s31b; CR: A266; R99; 8.3.1; 8.4.0; Fast inband signalling: E-IACCH 05.08; s31b; CR: A268; R99; 8.3.1; 8.4.0; EGPRS Link Quality measurements
SIST EN 300 911 V8.4.1:2003 is classified under the following ICS (International Classification for Standards) categories: 33.070.50 - Global System for Mobile Communication (GSM). The ICS classification helps identify the subject area and facilitates finding related standards.
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital cellular telecommunications system (Phase 2+) (GSM); Radio subsystem link control (GSM 05.08 version 8.4.1 Release 1999)33.070.50Globalni sistem za mobilno telekomunikacijo (GSM)Global System for Mobile Communication (GSM)ICS:Ta slovenski standard je istoveten z:EN 300 911 Version 8.4.1SIST EN 300 911 V8.4.1:2003en01-december-2003SIST EN 300 911 V8.4.1:2003SLOVENSKI
STANDARD
ETSIEN300911V8.4.1(2000-10)EuropeanStandard(Telecommunicationsseries)Digitalcellulartelecommunicationssystem(Phase2+);Radiosubsystemlinkcontrol(GSM05.08version8.4.1Release1999)GLOBALSYSTEMFORMOBILECOMMUNICATIONSRSIST EN 300 911 V8.4.1:2003
ETSIETSIEN300911V8.4.1(2000-10)2(GSM05.08version8.4.1Release1999)ReferenceREN/SMG-020508Q8R1KeywordsDigitalcellulartelecommunicationssystem,GlobalSystemforMobilecommunications(GSM)ETSI650RoutedesLuciolesF-06921SophiaAntipolisCedex-FRANCETel.:+33492944200Fax:+33493654716SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/88ImportantnoticeIndividualcopiesofthepresentdocumentcanbedownloadedfrom:http://www.etsi.orgThepresentdocumentmaybemadeavailableinmorethanoneelectronicversionorinprint.Inanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF).Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.Usersofthepresentdocumentshouldbeawarethatthedocumentmaybesubjecttorevisionorchangeofstatus.InformationonthecurrentstatusofthisandotherETSIdocumentsisavailableathttp://www.etsi.org/tb/status/Ifyoufinderrorsinthepresentdocument,sendyourcommentto:editor@etsi.frCopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.SIST EN 300 911 V8.4.1:2003
ETSIETSIEN300911V8.4.1(2000-10)3(GSM05.08version8.4.1Release1999)ContentsIntellectualPropertyRights.7Foreword.71Scope.81.1References.81.2Abbreviations.92General.93Handover.113.1Overallprocess.113.2MSmeasurementprocedure.113.3BSSmeasurementprocedure.113.4Strategy.114RFpowercontrol.124.1Overallprocess.124.2MSimplementation.124.3MSpowercontrolrange.124.4BSSimplementation.134.5BSSpowercontrolrange.134.6Strategy.134.7Timing.134.8Dedicatedchannelsusedforavoicegroupcallorvoicebroadcast.145Radiolinkfailure.145.1Criterion.145.2MSprocedure.155.3BSSprocedure.156Idlemodetasks.156.1Introduction.156.2Measurementsfornormalcellselection.166.3Measurementsforstoredlistcellselection.166.4Criteriaforcellselectionandreselection.176.5Downlinksignallingfailure.186.6MeasurementsforCellReselection.196.6.1MonitoringofreceivedsignallevelandBCCHdata.196.6.2Pathlosscriteriaandtimingsforcellre-selection.206.6.3CellreselectionalgorithmforSoLSA.216.6.4Algorithmforcellre-selectionfromGSMtoUTRAN.216.7ReleaseofTCHandSDCCH.226.7.1Normalcase.226.7.2Callre-establishment.226.8Abnormalcasesandemergencycalls.237Networkpre-requisites.237.1BCCHcarriers.237.2IdentificationofsurroundingBSSforhandovermeasurements.248Radiolinkmeasurements.258.1Signallevel.268.1.1General.268.1.2Physicalparameter.268.1.3Statisticalparameters.278.1.4Rangeofparameter.278.1.5Measurementquantityforotherradioaccesstechnologies.278.1.5.1UTRANFDD.278.1.5.2UTRANTDD.28SIST EN 300 911 V8.4.1:2003
ETSIETSIEN300911V8.4.1(2000-10)4(GSM05.08version8.4.1Release1999)8.1.5.3cdma2000.288.2Signalquality.288.2.1General.288.2.2Physicalparameter.288.2.3Statisticalparameters.288.2.4Rangeofparameter.298.2.4.1RangeofparametersforEGPRS.308.3Aspectsofdiscontinuoustransmission(DTX).338.4Measurementreporting.338.4.1MeasurementreportingfortheMSonaTCH.338.4.1.1MeasurementreportingfortheMSonanE-TCHinFPCmode.348.4.2MeasurementreportingfortheMSonaSDCCH.358.4.3AdditionalcellreportingrequirementsformultibandMS.358.4.4CommonaspectsfortheMSonaTCHoraSDCCH.368.4.5MeasurementreportingfortheBSS.368.4.6Extendedmeasurementreporting.368.4.7AdditionalcellreportingrequirementsformultimodeMS.378.4.8EnhancedMeasurementReporting.378.4.8.1ReportingPriority.378.4.8.2MeasurementReporting.388.5AbsoluteMS-BTSdistance.398.5.1General.398.5.2Physicalparameter.399Controlparameters.4010GPRSmodetasks.4210.1CellRe-selection.4210.1.1MonitoringthereceivedsignallevelandPBCCHdata.4310.1.1.1Packetidlemode.4310.1.1.2Packettransfermode.4410.1.2CellRe-selectionCriteria.4510.1.3CellRe-selectionAlgorithm.4610.1.3.1Abnormalcellreselection.4710.1.3.1aAlgorithmforcellre-selectionfromGSMtoUTRAN.4710.1.4NetworkcontrolledCellre-selection.4810.1.4.1Measurementreporting.4810.1.4.2Cellre-selectioncommand.4910.1.4.3Exceptionalcases.4910.1.5ExtendedMeasurementreporting.5010.2RFPowerControl.5110.2.1MSoutputpower.5110.2.2BTSoutputpower.5210.2.3MeasurementsatMSside.5310.2.3.1DerivingtheCvalue.5310.2.3.1.1Packetidlemode.5310.2.3.1.2Packettransfermode.5410.2.3.2DerivationofChannelQualityReport.5510.2.3.2.1Packettransfermode.5510.2.3.2.2Packetidlemode.5810.2.3.2.3Measurementreporting.5910.2.4MeasurementsatBSSside.5910.3Measurementrequirements.5910.4Controlparameters.6011CTSmodetasks.6211.1CTSidlemodetasks.6211.1.1CTScellselection.6211.1.1.1SynchronizationandmeasurementsforCTScellselection.6211.1.1.2InitialsychronizationofCTS-MS.6211.1.2CriterionforCTScellselection.6311.1.3MonitoringofCTSBCHandCTSPCH.6311.1.3.1Monitoringofreceivedsignallevel.63SIST EN 300 911 V8.4.1:2003
ETSIETSIEN300911V8.4.1(2000-10)5(GSM05.08version8.4.1Release1999)11.1.3.2Downlinkbeaconfailure.6311.1.3.3Downlinkpagingfailure.6311.1.4ProcedureswithreportingtotheCTS-FP.6411.1.4.1AFAmonitoring.6411.1.4.2BCCHdetection.6411.1.4.3ObservedFrequencyOffset(OFO)measurement.6411.2Intra-cellhandover.6511.2.1Overallprocess.6511.2.2CTS-MSmeasurementprocedure.6511.2.3CTS-FPmeasurementprocedure.6511.2.4Strategy.6511.3RFpowercontrol.6511.3.1Overallprocess.6511.3.2CTS-MSimplementation.6511.3.3CTS-MSpowercontrolrange.6611.3.4CTS-FPimplementation.6611.3.5CTS-FPpowercontrolrange.6611.3.6Strategy.6611.3.7Timing.6611.4Radiolinkfailure.6711.4.1Criterion.6711.4.2CTS-MSprocedure.6711.4.3CTS-FPprocedure.6711.5Radiolinkmeasurements.6711.5.1Signalstrength.6711.5.1.1General.6711.5.1.2Physicalparameter.6811.5.1.3Statisticalparameters.6811.5.1.4Rangeofparameter.6811.5.2Signalquality.6811.5.2.1General.6811.5.2.2Physicalparameter.6811.5.2.3Statisticalparameters.6811.5.2.4Rangeofparameter.6811.5.3Aspectsofdiscontinuoustransmission(DTX).6811.5.4MeasurementreportingfortheCTS-MSonaTCH.6811.6ControlofCTS-FPservicerange.6911.7Controlparameters.6912COMPACTModeTasks.7112.1Introduction.7112.2NetworkPre-requisites.7112.2.1CPBCCHcarriers.7112.3COMPACTIdleModeTasks.7112.3.1Introduction.7112.3.2MeasurementsforCOMPACTCellSelection.7112.3.3MeasurementsforCOMPACTStoredListCellSelection.7212.3.4CriteriaforCOMPACTCellSelection.7212.3.5DownlinkSignallingFailure.7212.4COMPACTCellReselection.7212.4.1MonitoringthereceivedsignallevelandCPBCCHdata.7312.4.1.1Packetidlemode.7312.4.1.2Packettransfermode.7312.4.2COMPACTcellreselectioncriteria.7412.4.3COMPACTcellreselectionalgorithm.7412.4.4NetworkcontrolledCellreselection.7412.4.5COMPACTcellreselectionmeasurementopportunities.74SIST EN 300 911 V8.4.1:2003
ETSIETSIEN300911V8.4.1(2000-10)6(GSM05.08version8.4.1Release1999)AnnexA(informative):DefinitionofabasicGSMorDCS1800handoverandRFpowercontrolalgorithm.75A.1Scope.75A.2Functionalrequirement.75A.3BSSpre-processingandthresholdcomparisons.76A.3.1Measurementaveragingprocess.76A.3.2Thresholdcomparisonprocess.77A.3.2.1RFpowercontrolprocess.77A.3.2.2HandoverProcess.78A.4BSSdecisionalgorithm.79A.4.1Internalintracellhandoveraccordingtoradiocriteria:(Interferenceproblems).80A.4.2Internalhandoveraccordingtoothercriteria.80A.4.3Generalconsiderations.80A.5Channelallocation.80A.6HandoverdecisionalgorithmintheMSC.81AnnexB(informative):PowerControlProcedures.83B.1Openloopcontrol.83B.2Closedloopcontrol.84B.3Qualitybasedcontrol.84B.4BTSpowercontrol.85B.5Example.85B.6InterworkingbetweennormalandfastpowercontrolforECSD.86AnnexC(informative):ExampleInterferenceMeasurementAlgorithm.88AnnexD(informative):ExampleSelectionofModulationandCodingSchemesbasedonLinkQualityReports.89AnnexE(informative):Changecontrolhistory.90History.93SIST EN 300 911 V8.4.1:2003
ETSIETSIEN300911V8.4.1(2000-10)7(GSM05.08version8.4.1Release1999)IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinETSISR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinETSISR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeSpecialMobileGroup(SMG).ThepresentdocumentspecifiestheRadiosub-systemlinkcontrolimplementedintheMobileStation(MS),BaseStationSystem(BSS)andMobileSwitchingCentre(MSC)ofthedigitalmobilecellularandpersonalcommunicationsystemsoperatinginthe900MHzand1800MHzband(GSM900andDCS1800).ThecontentsofthepresentdocumentmaybesubjecttocontinuingworkwithinSMGandmaychangefollowingformalSMGapproval.ShouldSMGmodifythecontentsofthepresentdocumentitwillthenbere-submittedforformalapprovalproceduresbyETSIwithanidentifyingchangeofreleasedateandanincreaseinversionnumberasfollows:Version8.x.ywhere:8GSMPhase2+Release1999.xtheseconddigitisincrementedforchangesofsubstance,i.e.technicalenhancements,corrections,updates,etc.;ythethirddigitisincrementedwheneditorialonlychangeshavebeenincorporatedinthespecification.NationaltranspositiondatesDateofadoptionofthisEN:29September2000DateoflatestannouncementofthisEN(doa):31December2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):30June2001DateofwithdrawalofanyconflictingNationalStandard(dow):30June2001SIST EN 300 911 V8.4.1:2003
ETSIETSIEN300911V8.4.1(2000-10)8(GSM05.08version8.4.1Release1999)1ScopeThepresentdocumentspecifiestheRadiosub-systemlinkcontrolimplementedintheMobileStation(MS),BaseStationSystem(BSS)andMobileSwitchingCentre(MSC)ofthedigitalcellulartelecommunicationssystemsGSM.Unlessotherwisespecified,referencestoGSMalsoincludeincludeoperationinanyband.1.1ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.• ForthisRelease1999document,referencestoGSMdocumentsareforRelease1999versions(version8.x.y).[1]GSM01.04:"Digitalcellulartelecommunicationssystem(Phase2+);Abbreviationsandacronyms".[2]GSM03.03:"Digitalcellulartelecommunicationssystem(Phase2+);Numbering,addressingandidentification".[3]GSM03.09:"Digitalcellulartelecommunicationssystem(Phase2+);Handoverprocedures".[4]GSM03.22:"Digitalcellulartelecommunicationssystem(Phase2+);FunctionsrelatedtoMobileStation(MS)inidlemodeandgroupreceivemode".[5]GSM04.04:"Digitalcellulartelecommunicationssystem(Phase2+);Layer1;Generalrequirements".[6]GSM04.06:"Digitalcellulartelecommunicationssystem(Phase2+);MobileStation-BaseStationSystem(MS-BSS)interface;DataLink(DL)layerspecification".[7]GSM04.08:"Digitalcellulartelecommunicationssystem(Phase2+);Mobileradiointerfacelayer3specification".[8]GSM05.02:"Digitalcellulartelecommunicationssystem(Phase2+);Multiplexingandmultipleaccessontheradiopath".[9]GSM05.05:"Digitalcellulartelecommunicationssystem(Phase2+);Radiotransmissionandreception".[10]GSM05.10:"Digitalcellulartelecommunicationssystem(Phase2+);Radiosubsystemsynchronization".[11]GSM06.11:"Digitalcellulartelecommunicationssystem;Fullratespeech;Substitutionandmutingoflostframesforfullratespeechchannels".[12]GSM08.08:"Digitalcellulartelecommunicationssystem(Phase2+);Mobile-servicesSwitchingCentre-BaseStationSystem(MSC-BSS)interface,Layer3specification".[13]GSM08.58:"Digitalcellulartelecommunicationssystem(Phase2+);BaseStationController-BaseTransceiverStation(BSC-BTS)interface;Layer3specification".SIST EN 300 911 V8.4.1:2003
ETSIETSIEN300911V8.4.1(2000-10)9(GSM05.08version8.4.1Release1999)[14]GSM11.10:"Digitalcellulartelecommunicationssystem(Phase2+);MobileStation(MS)conformityspecification".[15]GSM03.64:"Digitalcellulartelecommunicationssystem(Phase2+);GeneralPacketRadioService(GPRS);OveralldescriptionoftheGPRSRadioInterface;Stage2".[16]GSM03.52:"Digitalcellulartelecommunicationssystem(Phase2+);GSMCordlessTelephonySystem(CTS),Phase1;LowerlayersoftheCTSRadioInterface;Stage2".[17]GSM04.56:"Digitalcellulartelecommunicationssystem(Phase2+);GSMCordlessTelephonySystem(CTS),Phase1;CTSradiointerfacelayer3specification".[18]GSM05.56:"Digitalcellulartelecommunicationssystem(Phase2+);GSMCordlessTelephonySystem(CTS),Phase1;CTS-FPradiosubsystem".[19]TIA/EIA/IS-2000-5-A:"UpperLayer(Layer3)SignalingStandardforcdma2000SpreadSpectrumSystems".[20]TIA/EIA/IS-833:"Multi-CarrierSpecificationforSpreadSpectrumSystemsonGSMMAP(MC-MAP)(LowerLayersAirInterface)".1.2AbbreviationsAbbreviationsusedinthepresentdocumentarelistedinGSM01.04.2GeneralTheradiosub-systemlinkcontrolaspectsthatareaddressedareasfollows:-Handover;-RFPowercontrol,includingfastpowercontrolforECSD;-RadiolinkFailure;-Cellselectionandre-selectioninIdlemode,inGroupReceivemodeandinGPRSmode(seeGSM03.22);-CTSmodetasks.HandoverisrequiredtomaintainacallinprogressasaMSengagedinapoint-to-pointcallorwithaccesstotheuplinkofachannelusedforavoicegroupcallpassesfromonecellcoverageareatoanotherandmayalsobeemployedtomeetnetworkmanagementrequirements,e.g.reliefofcongestion.HandovermayoccurduringacallfromoneTCHormultipleTCHs(inthecaseofmultislotconfiguration)toanotherTCHormultipleTCHs.ItmayalsooccurfromDCCHtoDCCHorfromDCCHtooneormultipleTCH(s),e.g.duringtheinitialsignallingperiodatcallset-up.Thehandovermaybeeitherfromchannel(s)ononecelltootherchannel(s)onasurroundingcell,orbetweenchannelsonthesamecellwhicharecarriedonthesamefrequencyband.Examplesaregivenofhandoverstrategies,however,thesewillbedeterminedindetailbythenetworkoperator.ForamultibandMS,specifiedinGSM02.06,thehandoverdescribedisalsoallowedbetweenanychannelsondifferentcellswhicharecarriedondifferentfrequencybands,e.g.betweenaGSM900/TCHandaDCS1800/TCH.Handoverbetweentwoco-locatedcells,carriedondifferentfrequencybands,isconsideredasinter-cellhandoverirrespectiveofthehandoverproceduresused.ForamultimodeMS,handoverisallowedbetweenGSMandotherradioaccesstechnologies.AdaptivecontroloftheRFtransmitpowerfromanMSandoptionallyfromtheBSSisimplementedinordertooptimizetheuplinkanddownlinkperformanceandminimizetheeffectsofco-channelinterferenceinthesystem.SIST EN 300 911 V8.4.1:2003
ETSIETSIEN300911V8.4.1(2000-10)10(GSM05.08version8.4.1Release1999)Thecriteriafordeterminingradiolinkfailurearespecifiedinordertoensurethatcallswhichfaileitherfromlossofradiocoverageorunacceptableinterferencearesatisfactorilyhandledbythenetwork.Radiolinkfailuremayresultineitherre-establishmentorreleaseofthecallinprogress.Forchannelsusedforavoicegroupcall,anradiouplinkfailureresultsinthefreeingupoftheuplink.Proceduresforcellselectionandre-selectionwhilstinIdlemode(i.e.notactivelyprocessingacall),arespecifiedinordertoensurethatamobileiscampedonacellwithwhichitcanreliablycommunicateonboththeradiouplinkanddownlink.TheoperationsofanMSinIdleModearespecifiedinGSM03.22.Cellre-selectionisalsoperformedbytheMSwhenattachedtoGPRS,exceptwhentheMSsimultaneouslyhasacircuitswitchedconnection.Optionalproceduresarealsospecifiedfornetworkcontrolledcellre-selectionforGPRS.Cellre-selectionforGPRSisdefinedinclause10.1.ForamultimodeMS,cellselectionandre-selectionisallowedbetweenGSMandotherradioaccesstechnologies.AnMSlisteningtoavoicegroupcalloravoicebroadcastusecellre-selectionprocedurestochangecell.Thismaybesupportedbyalistofcellscarryingthevoicegrouporvoicebroadcastcalldownlink,providedtotheMSbythenetwork.TheoperationsofanMSinGroupReceiveModearespecifiedinGSM03.22.InformationsignalledbetweentheMSandBSSissummarizedintables1,2and3.AfullspecificationoftheLayer1headerisgiveninGSM04.04,andoftheLayer3fieldsinGSM04.08.ForCTS,informationsignalledbetweentheCTS-MSandCTS-FPissummarizedintables4,5and6.AfullspecificationoftheCTSLayer3fieldsisgiveninGSM04.56.ForCOMPACT,specificproceduresaredefinedinclause12.SIST EN 300 911 V8.4.1:2003
ETSIETSIEN300911V8.4.1(2000-10)11(GSM05.08version8.4.1Release1999)3Handover3.1OverallprocessTheoverallhandoverprocessisimplementedintheMS,BSSandMSC.Measurementofradiosubsystemdownlinkperformanceandsignallevelsreceivedfromsurroundingcells,ismadeintheMS.ThesemeasurementsaresignalledtotheBSSforassessment.TheBSSmeasurestheuplinkperformancefortheMSbeingservedandalsoassessesthesignallevelofinterferenceonitsidletrafficchannels.InitialassessmentofthemeasurementsinconjunctionwithdefinedthresholdsandhandoverstrategymaybeperformedintheBSS.AssessmentrequiringmeasurementresultsfromotherBTSorotherinformationresidentintheMSC,maybeperformedintheMSC.GSM03.09describesthehandoverprocedurestobeusedinPLMNs.3.2MSmeasurementprocedureAprocedureshallbeimplementedintheMSbywhichitmonitorsthedownlinkRXsignallevelandqualityfromitsservingcellandthedownlinkRXsignallevelandBSICofsurroundingBTS.ThemethodofidentificationofsurroundingBTSisdescribedinclause7.2.TherequirementsfortheMSmeasurementsaregiveninclause8.1.3.3BSSmeasurementprocedureAprocedureshallbeimplementedintheBSSbywhichitmonitorstheuplinkRXsignallevelandqualityfromeachMSbeingservedbythecell.Inthecaseofamultislotconfigurationtheevaluationshallbeperformedonatimeslotpertimeslotbasis.AprocedureshallbeimplementedbywhichtheBSSmonitorsthelevelsofinterferenceonitsidletrafficchannels.3.4StrategyThehandoverstrategyemployedbythenetworkforradiolinkcontroldeterminesthehandoverdecisionthatwillbemadebasedonthemeasurementresultsreportedbytheMS/BSSandvariousparameterssetforeachcell.Networkdirectedhandovermayalsooccurforreasonsotherthanradiolinkcontrol,e.g.tocontroltrafficdistributionbetweencells.Theexacthandoverstrategieswillbedeterminedbythenetworkoperator,adetailedexampleofabasicoverallalgorithmappearsinannexA.Possibletypesofhandoverareasfollows:Inter-cellhandover:IntercellhandoverfromtheservingcelltoasurroundingcellwillnormallyoccureitherwhenthehandovermeasurementsshowlowRXLEVand/orRXQUALonthecurrentservingcellandabetterRXLEVavailablefromasurroundingcell,orwhenasurroundingcellallowscommunicationwithalowerTXpowerlevel.ThistypicallyindicatesthatanMSisontheborderofthecellarea.IntercellhandovermayalsooccurfromtheDCCHontheservingcelltoaTCHormultislotconfigurationonanothercellduringcallestablishment.ThismaybeusedasameansofprovidingsuccessfulcallestablishmentwhennosuitableTCHresourceisavailableonthecurrentservingcell.Inter-cellhandoverbetweencellsusingdifferentfrequencybandsisallowedforamultibandMS.Inter-cellhandoverbetweencellsusingdifferentradioaccesstechnologiesisallowedforamultimodeMS.Intra-cellhandover:Intra-cellhandoverfromonechannel/timeslotintheservingcelltoanotherchannel/timeslotinthesamecellwillnormallybeperformedifthehandovermeasurementsshowalowRXQUAL,butahighRXLEVontheservingcell.ThisindicatesadegradationofqualitycausedbyinterferenceeventhoughtheMSissituatedwithintheservingcell.Theintra-cellhandovershouldprovideachannelwithalowerlevelofinterference.Intra-cellhandovercanoccureithertoatimeslotonanewcarrierortoadifferenttimeslotonthesamecarrier.Similarly,intra-cellhandovermayoccurbetweendifferentmultislotconfigurationsinthesamecell.Thesemultislotconfigurationsmaycomprisedifferentnumberoftimeslotsandmaypartlyoverlap.Intra-cellhandoverfromoneofthebandsofoperationtoanotheroneisallowedforamultibandMS.SIST EN 300 911 V8.4.1:2003
ETSIETSIEN300911V8.4.1(2000-10)12(GSM05.08version8.4.1Release1999)GSM08.08definesthecausesforhandoverthatmaybesignalledfromBSStoMSC.4RFpowercontrol4.1OverallprocessRFpowercontrolisemployedtominimizethetransmitpowerrequiredbyMSorBSSwhilstmaintainingthequalityoftheradiolinks.Byminimizingthetransmitpowerlevels,interferencetoco-channelusersisreduced.4.2MSimplementationRFpowercontrolshallbeimplementedintheMS.ThepowercontrolleveltobeemployedbytheMSoneachuplinkchannel,exceptPDCH,isindicatedbymeansofthepowercontrolinformationsenteitherinthelayer1headerofeachSACCHmessageblock(seeGSM04.04)onthecorrespondingdownlinkchannel,orinadedicatedsignallingblock(seeGSM04.08).PowercontrolforPDCHisdefinedinclause10.2.TheMSshallemploythemostrecentlycommandedpowercontrollevelappropriatetoeachchannelforalltransmittedburstsoneitheraTCH(includinghandoveraccessburst),FACCH,SACCHorSDCCH.TheMSshallconfirmthepowercontrollevelthatitiscurrentlyemployingintheSACCHL1headeroneachuplinkchannel.TheindicatedvalueshallbethepowercontrollevelactuallyusedbythemobileforthelastburstofthepreviousSACCHperiod.IntheE-TCHmode,theMSshall,ifsoindicatedbytheBSSintheSACCHL1header(seeGSM04.04)orAssignmentcommand(seeGSM04.18),useFPC(fastpowercontrol).TheMSshallemploythemostrecentlycommandedfastpowercontrolleveloneachuplinkE-TCHchannel.ThepowercontrolleveltobeemployedbytheMSisindicatedbymeansofthepowercontrolinformationsentviaE-IACCHonceeveryFPCreportingperiod(seeclause4.7).IfFPCisinuse,theMSshallreport,intheSACCHL1header,thepowercontrollevelusedattheendofthenormalpowercontrolreportingperiod.IntheE.TCHmodeandchannelcodingasymmetryconfigurationusing8PSKforuplink,theMSshallE-IACCHinuplinkforfastmeasurementrepoting.NOTE:Theterm"normalpowercontrol"isusedinthisspecificationonlyforclarificationandisotherwis
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