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)

SIST EN 300 700:2001 is the Slovenian adoption of ETSI EN 300 700 V1.2.1, Digital Enhanced Cordless Telecommunications (DECT); Wireless Relay Station (WRS). It specifies how DECT Wireless Relay Stations use the relay capability to provide wireless connection for RFPs to the CCFP, and it sets the requirements for WRS operation in the DECT fixed network. It is aimed at people who design, install, configure, test, or operate DECT base-station equipment and relay links.

What does SIST EN 300 700:2001 specify?

SIST EN 300 700:2001 defines the DECT Wireless Relay Station as an additional building block for the DECT fixed network. The standard sets the provisions needed for controlled and reliable use of WRS infrastructure, and it does not tie those provisions to one specific profile.

The document is organized around a general WRS clause, then two WRS concepts: the Cordless Radio Fixed Part (CRFP) and the Repeater Part (REP). Clause 3 gives definitions and abbreviations, clause 4 gives the general WRS model and services, clause 5 covers CRFP behavior, and clause 6 covers REP behavior.

Annex	What it covers
Annex A	Optional CRFP interface to REP
Annex B	CRFP interworking with GAP-based Fixed Parts

What are the key requirements of SIST EN 300 700:2001?

The WRS concept is built so that the PT side sees a normal DECT fixed part, while the FT side can relay traffic transparently. In practice, this means the relay equipment must fit into DECT without forcing changes on the portable side, and cascaded WRS links are allowed with care for capacity and delay.

Physical and MAC layer behavior

Clause 4 requires WRS operation to follow the DECT PHY and MAC layer rules, with WRS-specific timing treatment. The WRS must meet the packet-type requirements from EN 300 175-2 and the MAC requirements from EN 300 175-3, while also supporting Z-field mapping and the WRS hop-control behavior in the fixed-part capabilities message. This matters because relay stations must stay synchronized and advertise their supported hop configuration correctly.

CRFP operation

Clause 5 defines the CRFP as a WRS that provides independent bearer control to both PTs and FTs. It uses a dual frame-multiplexing structure, relay-state and local-state handling, and specific identities such as RPN, PARK, and PMID. In practice, installers and test teams must verify the correct subscription data, bearer setup, suspend and resume behavior, handover, and the way relayed and local connections are addressed.

REP operation

Clause 6 defines the REP as a WRS that relays information within half a frame time interval. It introduces complementary connection setup, the double duplex bearer, mapping or interlacing of bearers, and quality control on relayed bearers. This matters because the REP has tighter channel-position rules than a normal fixed part, and a successful relay depends on correct bearer pairing and channel selection.

Security and ciphering

Clause 5.3.4 and Annex B require separate ciphering treatment for the FT-CRFP and CRFP-PT links when relayed connections are encrypted. The FT initiates cipher key transfer when needed, and the CRFP uses the received key for the PT side while a different key protects the FT side. For implementation, this means key management must track the specific CRFP user and the relayed connection state.

GAP interworking

Annex B adds the CRFP behavior needed for GAP-based Fixed Parts. It covers downlink broadcast handling, paging, WRS subscription on air, WRS-RPN retrieval and modification, encryption of relayed connections, dual cipher switching, and location registration with TPUI assignment. This is the part to use when a CRFP must work inside a GAP-oriented DECT environment.

What terms does SIST EN 300 700:2001 define?

• Wireless Relay Station (WRS) - A physical grouping that combines PT and FT elements to relay information from one DECT termination to another.
• Cordless Radio Fixed Part (CRFP) - A WRS that provides independent bearer control to a PT and an FT for relayed connections.
• Repeater Part (REP) - A WRS that relays information within the half-frame time interval.
• Radio fixed Part Number (RPN) - The specific identity used by the WRS as a fixed-part number.
• Portable part MAC Identity (PMID) - The MAC identity used to address connections in the CRFP and REP procedures.
• Derived Cipher Key (DCK) - The cipher key used for encrypted relayed connections after key transfer.
• InterWorking Unit (IWU) - The unit that coordinates interworking between the PT side and FT side of the WRS.

Who uses SIST EN 300 700:2001?

SIST EN 300 700:2001 is used by DECT equipment manufacturers, especially teams designing fixed parts, relay stations, and repeaters. It is also used by network operators, installers, and system owners who need to assign identities, access rights, and cipher keys for a WRS deployment.

Test laboratories and quality teams use it to check bearer setup, release, handover, ciphering, paging, and the GAP interworking behavior in Annex B. It is also relevant to system integrators who need to fit WRS equipment into an existing DECT fixed network.

What changed in SIST EN 300 700:2001 from the previous edition?

This edition is identified as EN 300 700 Version 1.2.1 and the scope states that it updates the text according to change requests. It also adds the annex specification for CRFP interworking with GAP-based Fixed Parts.

Which standards are used with SIST EN 300 700:2001?

The standard builds on the DECT Common Interface series:

• EN 300 175-1 - overview of the DECT Common Interface
• EN 300 175-2 - PHY layer
• EN 300 175-3 - MAC layer
• EN 300 175-4 - DLC layer
• EN 300 175-5 - NWK layer
• EN 300 175-6 - identities and addressing
• EN 300 175-7 - security features
• EN 300 175-8 - speech coding and transmission

Other named references add the WRS context:

• ETR 043 - services and facilities requirements
• ETR 246 - application of DECT WRS
• EN 300 444 - GAP, used in Annex B for CRFP interworking with GAP-based Fixed Parts

What does the SIST EN 300 700:2001 document contain?

The document contains reference models, layer-by-layer descriptions, message handling rules, and procedure flows for WRS operation. It includes timing and message-sequence examples for CRFP and REP bearer setup, release, suspend/resume, and handover.

It also includes state diagrams and management behavior for the CRFP and REP, plus the rules for identities, addressing, and subscription data. Annex A and Annex B add detailed tables and procedures for the optional REP interface and for GAP-based interworking.

For implementation and testing, the most useful parts are the frame multiplexing descriptions, the quality-control rules for relayed bearers, and the ciphering procedures. These sections show how the relay behaves in practice on the air interface and during network control.

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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