SIST EN 300 700:2001

• Abstract:

  Scope: To specify utilisation of the inherent DECT relay capability to provide RFPs with wireless connection to the CCFP. These new types of base stations is called Wireless Relay Stations (WRS). This ETS specifies the requirements for the WRS. Update according to change requests and including in an annex specification of a CRFP interworking with GAP

• Status: Published
• Publication Date: 31-Aug-2001
• ICS: 33.070.30 - Digital Enhanced Cordless Telecommunications (DECT)
• Technical Committee: MOC - Mobile Communications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Sep-2001
• Due Date: 01-Sep-2001
• Completion Date: 01-Sep-2001
• Ref Project: ETSI EN 300 700 V1.2.1 (2000-09) - Digital Enhanced Cordless Telecommunications (DECT); Wireless Relay Station (WRS)

Overview

SIST EN 300 700:2001 defines the technical requirements for Wireless Relay Stations (WRS) within Digital Enhanced Cordless Telecommunications (DECT) systems. Published by the Slovenski inštitut za standardizacijo (SIST), this standard ensures controlled and reliable implementation of WRS as an infrastructure building block in DECT networks. The primary objective is to specify how the inherent relay capabilities of DECT technology can be utilized to provide Radio Fixed Parts (RFPs) with a wireless connection to the Central Control Fixed Part (CCFP).

Wireless Relay Stations enable flexible and extended coverage of DECT networks without the need for additional cabling, supporting both existing and new deployment scenarios for cordless communication systems.

Key Topics

• Wireless Relay Station (WRS) Concepts
  WRS integrates functions of both DECT Fixed radio Termination (FT) and Portable radio Termination (PT), allowing it to relay information between a Radio Fixed Part and a Portable Part, or between other WRS components.

• Types of WRS
  The standard identifies two primary WRS concepts:

  • Cordless Radio Fixed Part (CRFP): Supports independent bearer control for relayed connections, providing flexible call and data handling.
  • Repeater Part (REP): Ensures efficient relay of information, particularly where direct coverage is limited.

• Layer-Specific Requirements
  WRS must conform to DECT protocol requirements at the:

  • Physical (PHY) Layer: Supports wireless transmission and reception according to EN 300 175 standards.
  • Medium Access Control (MAC) Layer: Provides necessary access control and bearer management for relayed connections.
  • Data Link Control (DLC) & Network (NWK) Layers: Optionally supports advanced network and link control for seamless operation between DECT system building blocks.

• Services and Procedures
  WRS offers a range of services including:

  • Transparent transfer between PT and FT elements
  • Support for broadcast, connection-oriented, and connectionless MAC services
  • Optional over-the-air maintenance and authentication services

  The standard also details essential procedures for identity management, hop control, and system initialization.

Applications

• Coverage Extension:
  WRS technology enables DECT network operators to extend cordless coverage into hard-to-reach or previously underserved areas without extensive cabling or new infrastructure.

• Residential and Enterprise Environments:
  Suitable for office buildings, multi-floor facilities, hospitals, and campuses where seamless handover and wide-area mobility are required.

• Flexible Network Topologies:
  Thanks to wireless internetwork relaying, WRS can be deployed in cascaded or single-link scenarios, supporting robust and scalable DECT architectures.

• Interoperability with GAP:
  The standard includes annexed specifications for CRFP interworking with Generic Access Profile (GAP)-based fixed parts, promoting multi-vendor compatibility and ease of integration.

• Disaster Recovery and Temporary Installations:
  Rapid network setup in temporary locations or during recovery operations becomes feasible using WRS as wireless relay points.

Related Standards

The effective implementation of SIST EN 300 700:2001 relies on conformity with other core DECT standards, including:

• EN 300 175 Parts 1-8: DECT Common Interface, covering overview, physical layer, MAC, DLC, NWK, identities, security, and speech transmission.
• EN 300 444: Generic Access Profile (GAP) for basic voice services, crucial for ensuring interoperability.
• ETR 043 and ETR 246: Provide further guidance on DECT services, facilities requirements, and application notes for WRS deployment.

Keywords:
DECT, Wireless Relay Station, WRS, Cordless Radio Fixed Part, Digital Enhanced Cordless Telecommunications, CRFP, REP, wireless repeater, radio fixed part, coverage extension, GAP, cordless communication standard, SIST EN 300 700:2001.

For more information and the complete document, refer to the European Telecommunications Standards Institute or your national standardization body.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital Enhanced Cordless Telecommunications (DECT); Wireless Relay Station (WRS)33.070.30'(&7Digital Enhanced Cordless Telecommunications (DECT)ICS:Ta slovenski standard je istoveten z:EN 300 700 Version 1.2.1SIST EN 300 700:2001en01-september-2001SIST EN 300 700:2001SLOVENSKI
STANDARD
ETSIEN300700V1.2.1(2000-09)EuropeanStandard(Telecommunicationsseries)DigitalEnhancedCordlessTelecommunications(DECT);WirelessRelayStation(WRS)SIST EN 300 700:2001

ETSIETSIEN300700V1.2.1(2000-09)2ReferenceREN/DECT-050145KeywordsDECT,repeaterETSI650RoutedesLuciolesF-06921SophiaAntipolisCedex-FRANCETel.:[phone]Fax:[phone]SiretN°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:[e-mail]opartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.SIST EN 300 700:2001

ETSIETSIEN300700V1.2.1(2000-09)3ContentsIntellectualPropertyRights.6Foreword.61Scope.72References.73Definitionsandabbreviations.83.1Definitions.83.2Abbreviations.94WirelessRelayStation(WRS).104.1Introduction.104.2Description.104.2.1PHYlayerfunctions.114.2.2MAClayerfunctions.114.2.3DLClayerfunctions.114.2.4NWKlayerfunctions.114.2.4.1Over-the-airmaintenance.114.2.5Identities.124.3Services.124.4Procedures.124.4.1PHYlayer.124.4.2MAClayer.124.4.2.1Extendedfixedpartcapabilities.124.4.2.2Hopcontrol.125CordlessRadioFixedPart(CRFP).135.1Description.135.1.1General.135.1.2Referencemodel.135.1.3MAClayerfunctions.135.1.3.1General.135.1.3.2Framemultiplexingstructure.145.1.3.3Logicalchannelmapping.155.1.3.4QualityControlandFlowControl.155.1.4NWKlayerfunctions.155.1.5Identities.165.1.5.1Identitiesandaddressing.165.1.5.2Subscriptiondata.165.2Messages.165.2.1MAClayercontrol.165.3Procedures.175.3.1MAClayer.175.3.1.1ConnectionOrientedmode(C/O)proceduresatCRFP.175.3.1.1.1CreationofaRelayMultiBearerControl(RMBC).175.3.1.1.2NormalC/Obearersetup.175.3.1.1.3DualC/Obearersetup.185.3.1.1.4C/Oconnectionrelease.195.3.1.1.5C/Oabnormalconnectionrelease.205.3.1.2CRFPconnectionsuspendandresume.215.3.1.3C/Obearerhandover.225.3.2DLClayer.245.3.2.1Connectionhandover.245.3.2.2DLCvariables.255.3.3NWKlayer.255.3.4Security.275.3.4.1General.27SIST EN 300 700:2001

ETSIETSIEN300700V1.2.1(2000-09)45.3.4.2CRFPinitializationofPTcipherkey.305.3.5Management.305.3.5.1CRFPMACmodes.305.3.5.2CRFPstatesandstatetransitions.305.4ExampleoperationofCRFP.315.4.1Introduction.315.4.2ExampleGAPprocedures.316RepeaterPart(REP).316.1Description.316.1.1General.316.1.2Referencemodel.316.1.3MAClayerfunctions.326.1.3.1General.326.1.3.2Framemultiplexing.326.1.3.2.1Qualitycontrol.346.1.3.2.2Bearersselection.356.1.3.2.3Relayofaduplexbearer.356.1.3.2.4Relayofadoublesimplexbearer.356.1.3.3Logicalchannelmapping.356.1.4DLCfunctions.366.1.5NWKlayerfunctions.366.1.6Managementfunctions.366.1.6.1Identitiesandaddressing.366.2Definitions.376.3Messages.376.3.1MACcontrol(MT).376.4Procedures.376.4.1MAClayer.376.4.1.1C/Oconnection.376.4.1.1.1Complementaryconnectionsetupprocedure.376.4.1.1.2Creationofadoubleduplexbearer.386.4.1.1.3Mappingprocedure.396.4.1.2REPrelayedC/Oconnection.406.4.1.2.1IWU.406.4.1.2.2REPrelayedC/Osingleduplexbearersetup.416.4.1.2.3REPrelayedC/Obearerrelease.416.4.1.2.4REPrelayedC/Obearerhandover.426.4.2DLClayer.426.4.2.1REPrelayedC/Oconnectionhandover.426.4.3Management.436.4.3.1REPstates.436.4.3.2REPactionsandstatestransitions.446.4.3.2.1ActionsintheIdle_UnlockedandActive_Unlockedstates.446.4.3.2.2ActionsintheLockedstate.446.4.3.2.3EntryintotheActive_Idlestate.446.4.3.2.4ActionsintheActive_Idlestate.446.4.3.2.5EntryintotheActive_Trafficstate.456.4.3.2.6ActionsintheActive_Trafficstate.456.4.3.3Channelselection.456.5ExampleoperationofREP.45AnnexA(normative):TheoptionalCRFPinterfacetoREP.54A.1Description.54A.1.1General.54A.1.2Framemultiplexingstructure.54A.2Messages.55A.2.1MAClayer.55A.2.2Hopcontrol.55SIST EN 300 700:2001

ETSIETSIEN300700V1.2.1(2000-09)5A.3Procedures.55A.3.1MAClayer.55A.3.2Channelselection.58AnnexB(normative):CRFPInterworkingwithGAP-basedFixedParts.59B.1AdditionsandmodificationstoGAPFixedParts.59B.1.1Downlinkbroadcastfor"CRFPInterworkingwithGAP-basedFixedParts".59B.1.1.1QT-Extendedfixedpartcapabilities.59B.1.2Intra-cellBearerHandover.59B.1.3NWKlayerfeatures/proceduressupport.60B.1.4Bearerhandoverbitmaskmanagement.60B.2RequirementsontheCRFP.60B.2.1General.60B.2.2Downlinkbroadcast.61B.2.2.1NTmessage.61B.2.2.2QT-staticinformation(QH=0).61B.2.2.3QT-ExtendedRFcarrierinformation(QH=2).62B.2.2.4QT-FPcapabilities(QH=3).62B.2.2.5QT-ExtendedFPcapabilities(QH=4).63B.2.2.6QT-SARIsupport(QH=5).63B.2.2.7QT-Multiframenumber(QH=6).63B.2.3Pagingbroadcast.64B.2.3.1Shortpage,normal/extendedpaging.64B.2.3.2Zerolengthpage,normal/extendedpaging.64B.2.4Qualitycontrolofrelayedconnections.64B.2.5NWKlayerfeatures/proceduressupport.65B.3NWKlayerprocedures.65B.3.1ObtainingaccessrightsforWRS.65B.3.2RetrievalofWRS-RPN.66B.3.3Indication/modificationofWRS-RPN.67B.3.4ObtainingaccessrightsforencryptionofconnectionsrelayedbyWRS.68B.3.5IndicationofWRS-cipherkey.69B.3.6Dualcipherswitching.69B.3.7LocationregistrationwithTPUIassignmentforWRS.71B.4Managementprocedures.71B.4.1InitializationofCRFP.71B.4.1.1Indication/ModificationofWRS/RPN.71B.4.2ManagementforEncryptionofrelayedconnections.71History.72SIST EN 300 700:2001

ETSIETSIEN300700V1.2.1(2000-09)6IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.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)hasbeenproducedbyETSIProjectDigitalEnhancedCordlessTelecommunications(DECT).NationaltranspositiondatesDateofadoptionofthisEN:1September2000DateoflatestannouncementofthisEN(doa):31December2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):30June2001DateofwithdrawalofanyconflictingNationalStandard(dow):30June2001SIST EN 300 700:2001

ETSIETSIEN300700V1.2.1(2000-09)71ScopeThepresentdocumentdefinestheDigitalEnhancedCordlessTelecommunications(DECT)WirelessRelayStation(WRS).AWRSisanadditionalbuildingblockfortheDECTfixednetwork.ThepresentdocumentdefinesprovisionsneededforacontrolledandreliableapplicationoftheDECTWRSinfrastructurebuildingblock.Theseprovisionsarenotrelatedtoanyspecificprofile.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.[1]ETSIEN300175-1(V1.4):"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part1:Overview".[2]ETSIEN300175-2(V1.4):"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part2:PhysicalLayer(PHY)".[3]ETSIEN300175-3(V1.4):"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part3:MediumAccessControl(MAC)Layer".[4]ETSIEN300175-4(V1.4):"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part4:DataLinkControl(DLC)Layer".[5]ETSIEN300175-5(V1.4):"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part5:Network(NWK)Layer".[6]ETSIEN300175-6(V1.4):"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part6:IdentitiesandAddressing".[7]ETSIEN300175-7(V1.4):"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part7:SecurityFeatures".[8]ETSIEN300175-8(V1.4):"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Part8:SpeechCodingandTransmission".[9]ETSIETR043:"DigitalEnhancedCordlessTelecommunications(DECT);CommonInterface(CI);Servicesandfacilitiesrequirementsspecification".[10]ETSIETR246:"DigitalEnhancedCordlessTelecommunications(DECT);ApplicationofDECTWirelessRelayStations(WRS)".[11]ETSIEN300444(V1.3):"DigitalEnhancedCordlessTelecommunications(DECT);GenericAccessProfile(GAP)".SIST EN 300 700:2001

ETSIETSIEN300700V1.2.1(2000-09)83Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply:CordlessRadioFixedPart(CRFP):WRSthatprovidesindependentbearercontroltoaPortableradioTermination(PT)andFixedradioTermination(FT)forrelayedconnectionsFixedPart(DECTFixedPart)(FP):physicalgroupingthatcontainsalloftheelementsintheDECTnetworkbetweenthelocalnetworkandtheDECTairinterfaceNOTE1:ADECTFPcontainsthelogicalelementsofatleastoneFT,plusadditionalimplementationspecificelements.FixedradioTermination(FT):logicalgroupoffunctionsthatcontainsalloftheDECTprocessesandproceduresonthefixedsideoftheDECTairinterfaceNOTE2:AFTonlyincludeselementsthataredefinedintheDECTCIstandard.Thisincludesradiotransmissionelementstogetherwithaselectionoflayer2andlayer3elements.Handover:processofswitchingacallinprogressfromonephysicalchanneltoanotherphysicalchannel.Theseprocessescanbeinternal(seeinternalhandover)orexternal(seeexternalhandover)NOTE3:Therearetwophysicalformsofhandover,intra-cellhandoverandinter-cellhandover.Intra-cellhandoverisalwaysinternal.Inter-cellhandovercanbeinternalorexternal.InterWorkingUnit(IWU):unitthatisusedtointerconnectsubnetworksNOTE4:TheIWUcontainstheinterworkingfunctionsnecessarytosupporttherequiredsubnetworkinterworking.MediumAccessControl(MAC)Connection(CONNECTION):associationbetweenonesourceMACMulti-BearerControl(MBC)entityandonedestinationMACMBCentity.ThisprovidesasetofrelatedMACservices(asetoflogicalchannels),anditcaninvolveoneormoreunderlyingMACbearersPortablePart(DECTPortablePart)(PP):physicalgroupingthatcontainsallelementsbetweentheuserandtheDECTairinterface.PPisagenerictermthatmaydescribeoneorseveralphysicalpiecesNOTE5:ADECTPPislogicallydividedintoonePTplusoneormorePortableApplications(PAs).PortableradioTermination(PT):logicalgroupoffunctionsthatcontainsalloftheDECTprocessesandproceduresontheportablesideoftheDECTairinterfaceNOTE6:APTonlyincludeselementsthataredefinedintheDECTCIstandard.Thisincludesradiotransmissionelements(layer1)togetherwithaselectionoflayer2andlayer3elements.RadioFixedPart(RFP):onephysicalsub-groupofaFPthatcontainsalltheradioendpoints(oneormore)thatareconnectedtoasinglesystemofantennasRepeaterPart(REP):WRSthatrelaystheinformationwithinthehalfframetimeintervalWirelessRelayStation(WRS):physicalgroupingthatcombineselementsofbothPTsandFTstorelayinformationonaphysicalchannelfromoneDECTterminationtoaphysicalchannelforanotherDECTterminationNOTE7:TheDECTterminationcanbeaPToranFToranotherWRS.SIST EN 300 700:2001

ETSIETSIEN300700V1.2.1(2000-09)93.2AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:ACAuthenticationCodeARIAccessRightsIdentityBMCBroadcastMessageControlC/OConnectionOrientedmodeCKCipherKeyCNCarrierNumberCRFPCordlessRadioFixedPartDCKDerivedCipherKeyDECTDigitalEnhancedCordlessTelecommunicationsDLCDataLinkControlFMIDFixedpartMACIdentityFPFixedPartFTFixedradioTerminationGAPGenericAccessProfileIPUIInternationalPortableUserIdentityIWUInterWorkingUnitKSGKeyStreamGeneratorLLMELowerLayerManagementEntityLSBLeastSignificantBitMACMediumAccessControlMBCMultiBearerControlMMIManMachineInterfaceNWKNetworkOA&MOperation,AdministrationandMaintenancePAPortableApplicationPARIPrimaryAccessRightsIdentityPARKPortableAccessRightsKeyPHYPhysicalLayerPMIDPortablepartMACIdentityPPPortablePartPTPortableradioTerminationREPRepeaterPartRFPRadioFixedPartRFPIRadioFixedPartIdentityRMBCRelayMultiBearerControlRPNRadiofixedPartNumberRXReceiveSAPServiceAccessPointSNSlotpairNumberTBCTrafficBearerControlTPUITemporaryPortableUserIdentityTXTransmitUAKUserAuthenticationKeyWRSWirelessRelaystationSIST EN 300 700:2001

ETSIETSIEN300700V1.2.1(2000-09)104WirelessRelayStation(WRS)4.1IntroductionAWRSisaphysicalgroupingthatcontainsbothFixedradioTermination(FT)andPortableradioTermination(PT)elements,andthattransfersinformationbetweenaRadioFixedPart(RFP)andaPortablePart(PP).TheFTelementactstowardsaPPexactlyasanordinaryRFP.ThePTelementactslikeaPPtowardstheRFP,andislockedtotheclosestRFP.TheWRScontainsinterworkingbetweenitsFTanditsPT,includingtransparenttransferofthehigherlayerDECTservices.WRSlinksmaybecascaded.ComparedtoanRFP,aWRSmayintroducecapacityrestrictionstotheservicesoffered.TherestrictionsmayincreasewiththenumberofcascadedWRSlinks(hops).SingleWRSlinkapplicationscanbegenerallyapplied.However,specialprecautionsareneededwhenapplyingcascadedWRSlinks.Thecapacitymaybetoolow,ortheremaybeaneedtoadjusttheechocontrolrequirements.AWRSshallcomplywiththegeneralFTidentitiesrequirementsforRFPs.InstallingoraddingaWRStoaDECTinfrastructureisnotpossibleoutsidethecontrolofthesystemoperator/installer/owner,whoprovidestherequiredsystemidentities,accessrightsandauthentication/encryptionkeys.ThepresentdocumentdefinestwodifferentWRSconcepts,theCRFPandtheREP,whicharedetailedinclauses5and6respectively.4.2DescriptionPTFTPHLMACDLCNWKLLMELLMEIWUIWU(FT)(PT)WRSFigure1:WRSreferencemodel,ProtocolstackmodelSIST EN 300 700:2001

ETSIETSIEN300700V1.2.1(2000-09)11TheWRS,asshowninfigure1,providesinterworkingontheDECTairinterfacebetweenaPTandanFTasdescribedinEN300175,Parts1to8,[1]to[8].ThePTmayalsobethePTsideofaWRSinamulti-hopscenario.Thereferencemodeloffigure1establishesthefollowingbasicprinciplesoftheWRS:-interworkingwithPTsasdefinedbyEN300175,Parts1to8,[1]to[8];-interworkingwithFTsasdefinedbyEN300175,Parts1to8,[1]to[8],withadditionsdefinedinthepresentdocument;-interworkingbetweenPTandFTsideisprovidedatMediumAccessControl(MAC)layerandPhysical(PHY)layer;-alogicalgroupingofPTandWRSoperatesasaPT;-alogicalgroupingofFTandWRSoperatesasaFT.LookingtowardsthePTtheWRSisfullyprotocoltransparent.ThePTcannotdistinguishtheWRSfromanyotherRFPwithinanFT.Therefore,theWRSputsnoadditionalrequirementsonthePT.4.2.1PHYlayerfunctionsTheWRSshallfulfilthefollowingPHYlayerrequirements:-theWRSshallfortherelevantpackettypemeetthePPrequirementsinEN300175-2[2]whenitisactingasaPP,andmeettheRFPrequirementsinEN300175-2[2]whenitisactingasanRFP,exceptthatthetimingrequirementsinEN300175-2[2],subclause4.2.4shallbemetbyallWRStransmissionsandthattherequirementinEN300175-2[2],subclause4.2.5ondifferencebetweenreferencetimersshallbedisregarded;-Z-fieldmappingasdefinedinEN300175-2[2],subclause4.8shallbesupported.4.2.2MAClayerfunctionsTheWRSprovidesinterworkingattheMAClayer.TheWRSincorporatesPTandFTfunctionsasdefinedinEN300175-3[3].TheWRSshallfulfiltheobligatoryrequirementsofEN300175-3[3],subclauses11.4and11.6,withthemodificationsasdefinedinthepresentdocument.4.2.3DLClayerfunctionsTheWRSmayincorporateDLClayerPTfunctionalitytosupportcommunicationwiththeFTaccordingtoEN300175-4[4].4.2.4NWKlayerfunctionsTheWRSmayincorporateNWKlayerPTfunctionalitytosupportcommunicationwiththeFTaccordingtoEN300175-5[5].4.2.4.1Over-the-airmaintenanceIfOperation,AdministrationandMaintenance(OA&M)informationtransferissupported,itmayusethe<>informationelement(seeEN300175-5[5],subclause7.7.23)inNWKlayermessages.Thiselementcanaccommodateunstructureduserspecificdata.Forovertheairmaintenance,alinktowardstheWRSiscreatedusingthePPidentityoftheWRS.SIST EN 300 700:2001

ETSIETSIEN300700V1.2.1(2000-09)124.2.5IdentitiesTheWRSshallhaveaspecificRadiofixedPartNumber(RPN)identityandPortableAccessRightsKey(PARK).TheRPNmaybetransferredbyover-the-airmaintenanceprocedures.FortransferringtheRPNtotheWRS,theFixedIdentityinformationelementwithidentitytype"ARI+RPNforWRS"shouldbeused.TheWRSmayhaveadditionalspecificPTidentitieswhenPTDLCandNWKlayerfunctionalityisincluded.4.3ServicesTheWRSmaybeusedinallapplicationsasdefinedinETR043[9].TypicalWRSapplicationsarepresentedinETR246[10].TheWRSshallprovidearelayserviceforMAClayerconnectionoriented,broadcastandconnectionlessservicesasdefinedinEN300175-3[3],subclauses5.6and5.7.TheWRSshallprovidetheservicesasgivenintable1.Table1:WRSservicesOfferedserviceSupportCommentS.1TransparencybetweenPTandFTYesS.2MACservicesYesAll,seeEN300175-3[3]S.3OvertheairmaintenanceOptionalS.4PTservices(e.g.authentication)OptionalAsapplicableforacertainapplication(e.g.basedonaprofile)4.4Procedures4.4.1PHYlayerTheWRSshallconformtothePTandFTproceduresasdefinedbyEN300175-2[2].4.4.2MAClayerTheWRSshallconformtothePTandFTproceduresasdefinedbyEN300175-3[3].4.4.2.1ExtendedfixedpartcapabilitiesTheFPcancontrolthehopconfigurationandindicatetheadmittedWRSscenariosbymeansoftheextendedfixedpartcapabilitiesmessage(seeEN300175-3[3]).TheextendedfixedpartcapabilitiesmessageshallbesentbyallWRSsatleastonceevery8multiframes,andallWRSsshallunderstandthismessage.TheWRSshallassumeallWRSsupportbitsbeingsetto'0'whentheFTdoesnottransmitthemessage.4.4.2.2HopcontrolTheWRSthatislockedtoanFTshalldecreasethevalueHOPS(when>0)ofthecorrespondingWRStype(CRFPorREPrespectively;seeclauses5and6inthereceivedextendedfixedpartcapabilitiesmessage(seeEN300175-3[3],subclause7.2.3.5.2.1)forthetransmissionofitsownextendedfixedpartcapabilityinformation.NOTE:Thenumberofhopsshouldbenomorethanone.Useofmorethanonehopmaybesubjecttoagreementwithnationalradioauthorities.SIST EN 300 700:2001

ETSIETSIEN300700V1.2.1(2000-09)135CordlessRadioFixedPart(CRFP)ThisclausedefinesrequirementsinadditiontothegeneralrequirementsfortheWRSinclause4.5.1Description5.1.1GeneralThisdescriptionavoidsdefiningspecificimplementationsoftheCRFPforacertainapplication.ETR246[10]clarifiestheoperationoftheCRFPfortypicalapplications.ThisdescriptiondefinesthearchitecturemodeloftheCRFPandadditionalmessagesandproceduresnecessarytosupporttheCRFPsintheDECTenvironment.InthisdescriptionthefullslotframemultiplexingstructureandIN_minimum_delayspeechserviceareusedfordescriptivepurposesonly,andnottorestricttheapplicationoftheCRFPtoaspecificslotstructureorservice.5.1.2ReferencemodelThereferencemodeloffigure1isapplicablefortheCRFP.ThePTsideoftheCRFPiscalledCRFP_PT.TheFTsideoftheCRFPiscalledCRFP_FT.TosupportaCRFP,thefollowingadditionalproceduresaredefinedfortheFT:-MAClayer:accesscontrolofCRFP(forspecificinformationtransfertoCRFPs);-NWKlayer:CipherKey(CK)transfertoCRFP.ThefollowingfunctionsaredefinedfortheCRFPbasedonEN300175,Parts1to8,[1]to[8]:-FTandPTPHYandMAClayertoprovideindependentbearercontroltoPTsandFT;-aselectionofPTDLCandNWKlayertosupportcommunicationbetweenCRFPandFT.ThefollowingadditionalfunctionsandproceduresaredefinedfortheCRFP:-IWUatMACandPHYlayertoprovideinterworkingbetweenCRFP_PTandCRFP_FT;-accesscontrolprocedurestosupportbothrelayandlocalhandlingofdataonthesamebearer;-CKuploadingandinitializationforCRFP_FTMAC.5.1.3MAClayerfunctions5.1.3.1GeneralThebasicfunctionoftheCRFPisdefinedbyitsframemultiplexingstructure.ProceduresaredefinedbasedonthisstructuretoallowtheCRFPtosupportrequiredservices.SIST EN 300 700:2001

ETSIETSIEN300700V1.2.1(2000-09)145.1.3.2FramemultiplexingstructureFigure2showsthetypicalframemultiplexingstructureforaCRFPthatsupportsfullslotswithIN_minimum_delay.120012RFP120012120012PPTXRXRXTXTXRXTXRXTXRXTXRXTXRXCRFPFigure2:TypicalframemultiplexingstructureoftheCRFPUseofonehopviaaCRFPwillcauseanadditionaldelayof1frame,nomatterwhattimeslotsareused.TheframemultiplexingstructuresupportsacombinationofbothlinkswithPTsandFTs.InthisdualframemultiplexingstructuretheCRFPmaytransmitorreceiveduringanyslotofaframe.AduplexbearertoeitherthePTorFTisstillsupportedbyacombinationofaCRFPReceive(RX)andTransmit(TX)slotseparatedbyonehalfframe.TheCRFPshallsupporttheframemultiplexingstructuredefinedas:-CRFP-PTframesandCRFP-FTframesaresynchronizedtotheFTframes;-CRFP-PTandCRFP-FTbearercontrolcompliesatleastwithEN300175-3[3](e.g.Duplexbearersareseparatedbyonehalfframe);-relayedlogicalchannelsarebufferedtosupportMACmultiplexingrulesofCRFP-PTandCRFP-FT;-availableslotsoftheCRFParemarkedtobeeitherReceive(RX)orTransmit(TX)slots.AslotshallberegardedasTXslotonlywhenitisactuallyusedfortransmission;NOTE1:Duringthefirsthalfframe(e.g.Slot0to11)allRXslotslistentoFTtransmissionsandallTXslotstransmittoPTs.DuringthesecondhalfframeallRXslotslistentoPTsandallTXslotsshouldtransmittoFT.-RXandTXslotsofonerelayedbearerbelongtothesamehalfframe.NOTE2:InidlemodetheCRFPlistenstoanFTduringallframes,transmitsatleastonedummybearer(seeEN300175-3[3])toPTsandperformsreceiverscanningonallotherslots.IdlereceiverscanningisdoneinaccordancewithPTandFTidlereceiverscanprocedures.SIST EN 300 700:2001

ETSIETSIEN300700V1.2.1(2000-09)155.1.3.3LogicalchannelmappingTheCRFP_PTandCRFP_FTshallfulfilthemultiplexingrulesasdefinedinEN300175-3[3].HandlingoflogicalchanneldatareceivedatCRFP_PTshallbeasfollows:ME-SAP(Q,N,P,M):datashallbedeliveredtotheLowerLayerManagementEntity(LLME)ofCRFP.TheLLMEoftheCRFPshallalsogenerateinformationfortheBMCoftheCRFP_FT;MA-SAP(BS):datashallbedeliveredtothehigherlayerandtotheIWUoftheCRFP.TheIWUshallissueaMAC-PAGE.ReqfortheBMCoftheCRFP_FT;MB-SAP(CL,SIN,SIP):datashallbedeliveredtothehigherlayerandtotheIWUoftheCRFP;MC-SAP(C,I,GF):U-planedatashallalwaysberelayedbytheIWU.DependingontheCRFPstate,theC-planedatashallbedeliveredasfollows:-in"localstate",allC-planedataisdeliveredtohigherlayers;-in"relaystate",allC-planedataisdeliveredtotheIWUforrelayatCRFP_FT.Thelocalandrelaystateofaconnectionaredefinedinsubclause5.3.1.1.AllotherlogicalchanneldataishandledlocallyintheCRFP_PTandCRFP_FTMAC.LogicalchanneldatareceivedatCRFP_FTrelatedtotheMB-SAPandMC-SAPshallbedeliveredtotheIWUforrelay.ME-SAPdatashallbedeliveredtotheLLMEoftheCRFP.Delaylogicalchannels:LogicalchannelinformationthatisrelayedintheCRFPshallbearaminimumdelaywithintheconstraintsofthemultiplexingrulesasdefinedinsubclause6.2.2ofEN300175-3[3].IN_minimum_delayinformation,likespeech,shallberelayedinthesameornextframe,dependinguponbearerposition.5.1.3.4QualityControlandFlowControlTheCRFPhasseparatequalitycontrolandflowcontrolonthetwolinks.ForC-channelandIPchannelflowcontrol,forantennaswitchrequestsandslidingcollisiondetection,theBCKandQ2bitsshallbeusedforeachlinkandtheproceduresasdescribedinEN300175-3[3]shallbefollowedforeachlinkindependently.IftheCRFPreceivesaB-fieldwithcorruptINdata(X-CRCfailed)thenitshallrelaythisdataandchangetheB-fieldidentifications(a4,a5anda6bits)to'001'B.IftheCRFPreceivesaB-fieldwithcorruptIPerrordetectdatathenitshallrelaythisdataandchangetheB-fieldidentifications(a4,a5anda6bits)to'000'B.5.1.4NWKlayerfunctionsAdditionalfunctionalityinNWKlayerandLLMEofbothFTandCRFPisdefinedtosupportover-the-airCKtransfer(forencryptionofrelayedconnections)andOA&M.SIST EN 300 700:2001

ETSIETSIEN300700V1.2.1(2000-09)165.1.5Identities5.1.5.1IdentitiesandaddressingTheconnectionsintheCRFPareidentifiedbyPortablepartMACIdentities(PMIDs).RelayedconnectionsshallusethePMIDofaPT.ConnectionsinlocalstateshalluseaPMIDoftheCRFP.Toallowmultiplelocalconnectionssimultaneously,theCRFPshallprovidemultiplePMIDs.EachPMIDshouldberelatedtoadifferentInternationalPortableUserIdentity(IPUI)oftheCRFP.ThereforetheCRFPmaycomprisemultipleIPUIs.Bothinrelaystateandlocalstate,theFMIDusedtoaddressaCRFPisderivedfromthePARIoftheFTandtheRPNoftheCRFPandtheFMIDusedtoaddressaRFPisderivedfromthePARIoftheFTandtheRPNoftheRFPaccordingtoEN300175-3[3].ThePARKshouldbethesameforallIPUIsoftheCRFP.AttheNWKlayertheFTcanaddresstheCRFPasaPT.TheCRFPmaydefineoneIPUIoftheavailableones,whichshallbeusedforover-the-airmaintenance.TheFTmayaddressotherIPUIsoftheCRFPtoderiveDerivedCipherKey(DCK)fromaUserAuthenticationKey(UAK).5.1.5.2SubscriptiondataInordertoensureinterworkingoftheCRFPwithinaFPwithPTs,itisnecessarytoinstalltheparametersgivenintable2intotheCRFPduringsubscription.TheinstallationprocedureisimplementationdependentandmayrequireaManMachineInterface(MMI).Itisrecommendedtouseover-the-airmaintenanceprocedurestoallowon-airinstallationofmostparameters.Table2:CRFPparametersParameterOptional/MandatoryValueCommentRPNMAllPARIisrelayedfromFTandcombinedwithRPNofCRFPtoprovideRFPIPARKMAllPARKshouldbethesameforallCRFPusersIPUI(1.n)OAllnisthenumberofCRFPusersUAK/AC(1.n)OAllnisthenumberofCRFPusersCKOAllCKmaybederivedfromUAKNOTE:ThenumberofCRFPusersisthemaximumnumberofsimultaneousconnectionsfromtheCRFPthatrequirehigherlayercontrolintheCRFP.5.2Messages5.2.1MAClayercontrolTheCRFPusesthemessagesindicatedwith"**"inEN300175-3[3],subclauses7.2.5.2.2,7.2.5.3.1and7.3.3.1only,withthe"firstPTtransmission"codeforthefirsttransmissiontoanFT.ForallothertransmissionsofthesemessagestheCRFPshallusethesemessageswithoutthe"firstPTtransmission"code.Inallfollowingmessagediagrams,thenotationaccess.reqindicatesanaccess.reqmessagewiththe"firstPTtransmission"code,andthenotation*access.reqindicatesamessagewithoutthe"firstPTtransmission"code.SIST EN 300 700:2001

ETSIETSIEN300700V1.2.1(2000-09)175.3Procedures5.3.1MAClayer5.3.1.1ConnectionOrientedmode(C/O)proceduresatCRFPThefollowingproceduresprovidemeanstoaddressCRFPsononephysicalrelayedconnectionofaFTwithaPT.TheconnectionwiththePTiseitherinrelaystateorlocalstate.Inrelaystate,allhigherlayerC-planesignallingshallberelayedbytheCRFPsbetweenFTandPT.Inlocalstate,allhigherlayerC-planesignallingshallbebufferedattheFTandCRFP.ThelocalstateisatemporarystatetoallowhigherlayercommunicationbetweenFTandaspecificCRFP.5.3.1.1.1CreationofaRelayMultiBearerControl(RMBC)ToperformarelayfunctionintheCRFP,aRMBCisdefinedintheMACIWU.ThecreationofanRMBCintheIWUoftheCRFPisverysimilartothecreationofMBCsasspecifiedinEN300175-3[3],subclause10.2.4.1.TosetuparelayservicetheRMBCcanuseanormalbearersetuporadualbearersetupdependingonthecurrentmodeoftheCRFP(subclause5.3.5.1).5.3.1.1.2NormalC/ObearersetupUsingthenormalbearersetuptheFTdoesnotrecognizethatthebearersetupisarrivingfromaCRFP,theCRFP_PToperatesasaPT.TheCRFPconnectionshallalwaysbein"relaystate".BelowthecallingsideshallbetheinitiatingPTor
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