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)
- 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
SIST EN 300 911 V8.4.1:2003 is the Slovenian adoption of ETSI EN 300 911 Version 8.4.1. It specifies radio subsystem link control for GSM Phase 2+ Release 1999, covering the behavior of Mobile Station (MS), Base Station System (BSS), and Mobile Switching Centre (MSC) equipment. In practice, it is the control standard for handover, RF power control, radio link failure handling, and cell selection and reselection in GSM systems.
What does SIST EN 300 911 V8.4.1:2003 specify?
SIST EN 300 911 V8.4.1:2003 specifies the radio-link control functions used in GSM900 and DCS1800, and it also covers multiband and multimode operation where stated. The document focuses on how terminals and network equipment measure, report, and react to radio conditions.
The standard is organized into clauses for handover, RF power control, radio link failure, idle mode tasks, network prerequisites, radio link measurements, control parameters, GPRS mode tasks, CTS mode tasks, and COMPACT mode tasks. It then adds informative annexes with example algorithms and change history.
| Annex | What it covers |
|---|---|
| A | Basic GSM or DCS1800 handover and RF power control algorithm |
| B | Power control procedures |
| C | Example interference measurement algorithm |
| D | Example selection of Modulation and Coding Schemes based on Link Quality Reports |
| E | Change control history |
Clause 1 points to GSM04.04, GSM04.06 and GSM04.08 for lower-layer and Layer 3 details, so this standard concentrates on control behavior rather than restating those protocol specifications.
What are the key requirements of SIST EN 300 911 V8.4.1:2003?
SIST EN 300 911 V8.4.1:2003 requires the MS, BSS and MSC to work together using measurements and thresholds to keep radio links usable. The main purpose is to decide when to stay on a cell, switch cell, change power, or release a failed connection.
Handover is measurement-driven - Clause 3 requires the MS to measure serving-cell and surrounding-cell downlink conditions, while the BSS measures uplink performance. In practice, the network uses those reports to move calls to better channels or cells before quality drops too far.
RF power control is closed around the most recent command - Clause 4 requires the MS to use the latest commanded power level on each uplink channel, with fast power control (FPC) on E-TCH when enabled. This matters because it lets the network reduce interference while keeping the link strong enough.
Power changes follow defined timing - Clause 4 states that MS power changes happen in 2 dB steps at 60 ms intervals, and BSS power reduction ranges up to about 30 dB in 15 steps. That timing keeps power changes smooth and predictable during real calls.
Radio link failure uses counters and timeout values - Clause 5 bases MS failure detection on SACCH decoding success and the RADIO_LINK_TIMEOUT parameter. In practice, this gives the equipment a defined point at which it should re-establish or release a failing call instead of staying stuck.
Idle mode cell selection and reselection use received level averages and cell criteria - Clause 6 uses RLA_C, C1, C2 and related parameters to choose and keep the best cell. This is the part implementers use to make sure the MS camps on a cell with a good chance of uplink and downlink communication.
The network must support reliable neighbor identification - Clause 7 requires BCCH carriers, BSIC transmission, and timing information that let the MS identify surrounding BSSs for handover. Without that, the MS could measure the wrong cell.
Measurement reporting is structured by channel type and mode - Clause 8 defines reporting periods for TCH and SDCCH, extended measurement reporting, multiband reporting, and multimode reporting. For test and conformance work, this is where the report contents, timing, and cell-priority rules are defined.
Later clauses extend the same logic to GPRS, CTS and COMPACT - Clauses 10, 11 and 12 apply cell reselection, power control, handover and measurement behavior to packet, cordless and COMPACT operation. That keeps the radio-control model consistent across different GSM-based services.
What terms does SIST EN 300 911 V8.4.1:2003 define?
- Base Station Identity Code (BSIC) - A 6-bit code sent on each BCCH carrier to identify a surrounding cell and avoid confusing co-channel cells.
- Received level average (RLA_C) - The running average of received signal level used in cell selection and reselection decisions.
- RXLEV - The mapped signal-level value reported by the MS and BSS on a 0 to 63 scale.
- RXQUAL - The mapped signal-quality value derived from bit error performance before channel decoding.
- Fast power control (FPC) - A rapid power-control method used on E-TCH, with commands carried on E-IACCH.
- Discontinuous transmission (DTX) - A mode where only selected TDMA frames are transmitted, so receivers can still assess link quality from the defined frame subset.
- PBCCH - The packet broadcast control channel used for GPRS-related cell reselection and reporting.
- BCCH - The broadcast control channel that carries cell and neighbor information used for selection, reselection, and measurement.
Who uses SIST EN 300 911 V8.4.1:2003?
SIST EN 300 911 V8.4.1:2003 is used by engineers and testers working on GSM Mobile Stations, Base Station Systems, and Mobile Switching Centres. It is also used by network operators, integration teams, and conformance labs that need to verify handover, power control, cell reselection, and radio link failure behavior.
In practice, this standard supports radio planning, handset and infrastructure implementation, interoperability testing, and fault analysis for GSM900, DCS1800, GPRS, CTS and COMPACT-related functions.
Which standards are used with SIST EN 300 911 V8.4.1:2003?
| Reference | What it contributes |
|---|---|
| GSM01.04 | Abbreviations and acronyms |
| GSM03.03 | Numbering, addressing and identification |
| GSM03.09 | Handover procedures |
| GSM03.22 | MS functions in idle mode and group receive mode |
| GSM04.04 | Layer 1 general requirements |
| GSM04.06 | Data Link layer specification |
| GSM04.08 | Mobile radio interface Layer 3 specification |
| GSM05.02 | Multiplexing and multiple access on the radio path |
| GSM05.05 | Radio transmission and reception, including power steps and sensitivity |
| GSM05.10 | Radio subsystem synchronization |
| GSM06.11 | Lost frame substitution and muting for full-rate speech |
| GSM08.08 | MSC-BSS interface, Layer 3 specification |
| GSM08.58 | BSC-BTS interface, Layer 3 specification |
| GSM11.10 | MS conformity specification |
| GSM03.64 | GPRS radio interface overall description |
| GSM03.52 | CTS lower layers, stage 2 |
| GSM04.56 | CTS radio interface Layer 3 specification |
| GSM05.56 | CTS-FP radio subsystem |
| TIA/EIA/IS-2000-5-A | cdma2000 Layer 3 signaling |
| TIA/EIA/IS-833 | cdma2000 lower-layer air interface |
What does the SIST EN 300 911 V8.4.1:2003 document contain?
SIST EN 300 911 V8.4.1:2003 contains measurement procedures, decision criteria, reporting rules, and control behavior for radio-link management. It includes formulas and algorithms for handover, power control, radio link failure, cell selection, and reselection, together with special cases for GPRS, CTS, and COMPACT mode operation.
The document also defines reporting periods, neighbor-cell reporting priorities, and the required handling of serving-cell and non-serving-cell measurements. Its annexes provide worked examples of a basic algorithm, power control procedures, interference measurement, and MCS selection based on link quality reports.
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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.
SIST EN 300 911 V8.4.1:2003 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
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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