ETSI EN 301 193 V1.1.1 (1998-07)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital Video Broadcasting (DVB); Interaction channel through the Digital Enhanced Cordless Telecommunications (DECT)33.170Televizijska in radijska difuzijaTelevision and radio broadcasting33.070.30'(&7Digital Enhanced Cordless Telecommunications (DECT)ICS:Ta slovenski standard je istoveten z:EN 301 193 Version 1.1.1SIST EN 301 193 V1.1.1:2003en01-december-2003SIST EN 301 193 V1.1.1:2003SLOVENSKI
STANDARD
EN 301 193 V1.1.1 (1998-07)European Standard (Telecommunications series)Digital Video Broadcasting (DVB);Interaction channel through theDigital Enhanced Cordless Telecommunications (DECT)EBUUEREuropean Broadcasting UnionUnion Européenne de Radio-TélévisionSIST EN 301 193 V1.1.1:2003

ETSIEN 301 193 V1.1.1 (1998-07)2ReferenceDEN/JTC-DVB-35 (b1o00ico.PDF)KeywordsDVB, broadcasting, digital, video, interaction,DECTETSIPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: +33 4 92 94 42 00
Fax: +33 4 93 65 47 16Siret N° 348 623 562 00017 - NAF 742 CAssociation à but non lucratif enregistrée à laSous-Préfecture de Grasse (06) N° 7803/88Internetsecretariat@etsi.frhttp://www.etsi.frhttp://www.etsi.orgCopyright NotificationNo part may be reproduced except as authorized by written permission.The copyright and the foregoing restriction extend to reproduction in all media.© European Telecommunications Standards Institute 1998.© European Broadcasting Union 1998.All rights reserved.SIST EN 301 193 V1.1.1:2003

ETSIEN 301 193 V1.1.1 (1998-07)31ContentsIntellectual Property Rights.4Foreword.41Scope.52References.52.1Normative references.52.2Informative references.53Abbreviations.64Reference model.74.1Protocol stack model.74.2System model.75DVB interaction channel specification for DECT.85.1System architecture.85.2Physical interfaces.95.3Calling procedures.95.4DECT profiles.95.4.1Recommended DECT profiles when the DECT infrastructure is external to the home.95.4.2Recommended DECT profiles when the DECT infrastructure is internal to the home.105.5Forced disconnection.11Annex A (informative):Basic characteristics of DECT.12A.1DECT introduction.12A.2DECT standard.13A.2.1Physical (PHL) layer.13A.2.2Medium Access Control (MAC) layer.14A.2.3Data Link Control (DLC) layer.14A.2.4Network (NWK) layer.14A.2.5Lower Layer Management Entity (LLME).15A.2.6Inter-Working Units (IWU).15A.3Profiles.15A.3.1Radio in the local loop Access Profile (RAP).15A.3.2Data Services Profiles (DSP).17A.3.2.1PPP interworking DSP.18A.4Wireless Relay Station (WRS).18A.5DECT Authentication Module (DAM).18Annex B (informative):DECT implementation alternatives.19History.20SIST EN 301 193 V1.1.1:2003

ETSIEN 301 193 V1.1.1 (1998-07)4Intellectual Property RightsIPRs essential or potentially essential to the present document may have been declared to ETSI. The informationpertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be foundin SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respectof ETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on theETSI Web server (http://www.etsi.fr/ipr or http://www.etsi.org/ipr).Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guaranteecan be given as to the existence of other IPRs not referenced in SR 000 314 (or the updates on the ETSI Web server)which are, or may be, or may become, essential to the present document.ForewordThis European Standard (Telecommunications series) has been produced by the Joint Technical Committee (JTC)Broadcast of the European Broadcasting Union (EBU), Comité Européen de Normalisation ELECtrotechnique(CENELEC) and the European Telecommunications Standards Institute (ETSI).NOTE:The EBU/ETSI JTC was established in 1990 to co-ordinate the drafting of standards in the specific fieldof broadcasting and related fields. Since 1995 the JTC became a tripartite body by including in theMemorandum of Understanding also CENELEC, which is responsible for the standardization of radio andtelevision receivers. The EBU is a professional association of broadcasting organizations whose workincludes the co-ordination of its members' activities in the technical, legal, programme-making andprogramme-exchange domains. The EBU has active members in about 60 countries in the Europeanbroadcasting area; its headquarters is in Geneva.European Broadcasting UnionCH-1218 GRAND SACONNEX (Geneva)SwitzerlandTel: +41 22 717 21 11Fax: +41 22 717 24 81DVB ProjectFounded in September 1993, the DVB Project is a market-led consortium of public and private sector organizations inthe television industry. Its aim is to establish the framework for the introduction of MPEG-2 based digital televisionservices. Now comprising over 200 organizations from more than 25 countries around the world, DVB fostersmarket-led systems, which meet the real needs, and economic circumstances, of the consumer electronics and thebroadcast industry.National transposition datesDate of adoption of this EN:24 July 1998Date of latest announcement of this EN (doa):31 October 1998Date of latest publication of new National Standardor endorsement of this EN (dop/e):30 April 1999Date of withdrawal of any conflicting National Standard (dow):30 April 1999SIST EN 301 193 V1.1.1:2003

ETSIEN 301 193 V1.1.1 (1998-07)51ScopeThe present document is the baseline specification for the provision of an interaction channel based on the DigitalEnhanced Cordless Telecommunications (DECT) to Digital Video Broadcasting (DVB) systems.The DVB Project does not intend to specify an interaction channel solution associated to each broadcast system becausethe interoperability of different delivery media to transport the interaction channel is desirable. Therefore, the DECTsolution for the interaction channel apply to satellite, cable, MATV, Satellite Master Antenna TeleVision (SMATV),terrestrial, microwave or any future DVB broadcasting or distribution system.The solutions provided in the present document for an interaction channel through the DECT are a part of a wider set ofalternatives to implement interactive services for DVB systems.2ReferencesReferences may be made to:a)specific versions of publications (identified by date of publication, edition number, version number, etc.), inwhich case, subsequent revisions to the referenced document do not apply; orb)all versions up to and including the identified version (identified by "up to and including" before the versionidentity); orc)all versions subsequent to and including the identified version (identified by "onwards" following the versionidentity); ord)publications without mention of a specific version, in which case the latest version applies.A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the samenumber.2.1Normative references[1]ETS 300 802: "Digital Video Broadcasting (DVB); Network-independent protocols for DVBinteractive services".[2]EN 50201: "Interfaces for DVB-IRDs" CENELEC.[3]ETS 300 765-2: "Digital Enhanced Cordless Telecommunications (DECT); Radio in the LocalLoop (RLL) Access Profile (RAP); Part 2: Advanced telephony services".[4]EN 301 240: "Digital Enhanced Cordless Telecommunications (DECT); Data Services Profile(DSP); Point-to-Point Protocol (PPP) interworking for internet access and general multi-protocoldatagram transport".[5]ETS 300 700: "Digital Enhanced Cordless Telecommunications (DECT); Wireless Relay Station(WRS)".2.2Informative references[6]DVB-A008 (October 1995): "Commercial requirements for asymmetric interactive servicessupporting broadcast to the home with narrow-band return channels".[7]ETS 300 765-1: "Digital Enhanced Cordless Telecommunications (DECT); Radio in the LocalLoop (RLL) Access Profile (RAP); Part 1: Basic telephony services".[8]ETS 300 444: "Radio Equipment and Systems (RES); Digital European CordlessTelecommunications (DECT); Generic Access Profile (GAP)".SIST EN 301 193 V1.1.1:2003

ETSIEN 301 193 V1.1.1 (1998-07)6[9]DE/RES-03039: "Radio Equipment and Systems (RES); Digital European CordlessTelecommunications (DECT); DECT/ISDN Interworking for Intermediate System Configuration,Part 1: Interworking Specification and Part 2: Access profile".[10]ETR 308: "Digital Enhanced Cordless Telecommunications (DECT); Services, facilities andconfigurations for DECT in the local loop".[11]ETR 185: "Digital European Cordless Telecommunications (DECT); Data Services Profile (DSP);Profile overview".[12]ETS 300 651: "Digital Enhanced Cordless Telecommunications (DECT); Data Services Profile(DSP); Generic data link service;(Service type C, class 2)".[13]ETS 300 701: "Digital Enhanced Cordless Telecommunications (DECT); Data Services Profile(DSP); Generic frame relay service with mobility (service types A and B, class 2)".3AbbreviationsFor the purposes of the present document, the following abbreviations apply:A/VAudio/VideoBCBroadcast ChannelCICommon InterfaceCTACordless Terminal AdapterDAMDECT Authentication ModuleDECTDigital Enhanced Cordless TelecommunicationsDSPData Services ProfileFPFixed PartFTFixed TerminationGAPGeneric Access ProfileICInteraction ChannelIIMInteractive Interface ModuleINInteractive NetworkINAInteractive Network AdapterIRDIntegrated Receiver DecoderISDNIntegrated Services Digital NetworkIWUInter-Working UnitLAPLink Access ProtocolLLMELower Layer Management EntityMACMedium Access ControlMATVMaster Antenna TelevisionNIUNetwork Interface UnitNTUNetwork Termination UnitNWKNetworkOSIOpen Systems InterconnectionPHLPhysicalPPPortable PartPPPPoint to Point ProtocolPSTNPublic Switched Telephone NetworkRAPRadio in the local loop Access ProfileRFRadio FrequencyRLLRadio in the Local LoopSMATVSatellite Master Antenna TeleVisionSTBSet Top BoxSTUSet Top UnitWRSWireless Relay StationSIST EN 301 193 V1.1.1:2003

ETSIEN 301 193 V1.1.1 (1998-07)74Reference modelA reference model for the system architecture of narrow-band interaction channels in a broadband scenario (asymmetricinteractive services) is presented in this clause.4.1Protocol stack modelWithin the Digital Video Broadcasting (DVB) commercial requirements for asymmetric interactive services supportingbroadcast to the home with narrow-band return channel (see DVB-A008 [6]), a simple communications model has beenused to identify the necessity and importance of each commercial requirement consisting of the following layers (thelayers do not coincide exactly with the Open Systems Interconnection (OSI) layers):Physical layer: Where all the physical (electrical) transmission parameters are defined;Transport layer: Defines all the relevant data structures and communication protocols like data containers, etc.;Application layer: Is the interactive application software and runtime environment (e.g. home shopping application,script interpreter, etc.).The present document addresses the lower two layers (the physical and transport layers), leaving the application layeropen to competitive market forces. A simplified model of the OSI layers was adopted to facilitate the production ofspecifications for these nodes. Figure 1 points out the lower layers of the simplified model and identifies some of the keyparameters. Following the user requirements for interactive services, no attempt will be made to consider higher layersin the present document.Access mechanismPacket structureHigher mediumlayersNetwork independentprotocolsNetwork dependentprotocolsProprietary layersModulationChannel codingFrequency rangeFilteringEqualisationPowerFigure 1: Layer structure for generic system reference modelThe present document addresses the Digital Enhanced Cordless Telecommunications (DECT) specific aspects only.The network-independent protocols are specified separately in ETS 300 802 [1].4.2System modelFigure 2 shows the system model which is to be used within DVB for interactive services. In the system model, twochannels are established between the service provider and the user:a)Broadcast Channel (BC): A uni-directional broadband BC including video, audio and data. BC is establishedfrom the service provider to the users. It may include the forward interaction path.b)Interaction Channel (IC): A bi-directional interaction channel is established between the service provider andthe user for interaction purposes. It is formed by:SIST EN 301 193 V1.1.1:2003

ETSIEN 301 193 V1.1.1 (1998-07)8-Return interaction path (return channel): From the user to the service provider. It is used to make requeststo the service provider or to answer questions. It is a narrow-band channel. Also commonly known as returnchannel.-Forward interaction path: From the service provider to the user. It is used to provide some sort ofinformation by the service provider to the user and any other required communication for the interactiveservice provision. It may be embedded into the broadcast channel. It is possible that this channel is notrequired in some simple implementations which make use of the BC for the carriage of data to the user.EndUserSet Top Box (STB)InteractiveInterfaceModuleBroadcastServiceProviderInteractiveServiceProviderBroadcastNetworkAdapterInteractiveNetworkAdapterBroadcastInterfaceModuleSet TopUnit (STU)BroadcastingDeliveryMediaInteractionNetworkBroadcast Channel(DVB Transmission Systems)Interaction ChannelForwardInteractionpathReturnInteractionpathBroadcastchannelInteractionchannelsNetwork independentNetwork dependentNetwork independentCan be externalto STBNetworkInterfaceUnit (NIU)Figure 2: A generic system reference model for interactive systemsThe user terminal, here named Set Top Box (STB), is formed by the:a)Network Interface Unit (NIU), consisting of the:1)Broadcast Interface Module (BIM);2)Interactive Interface Module (IIM); andb)Set Top Unit (STU).The user terminal provides interfaces for both broadcast and interaction channels. The interface between the userterminal and the interaction network is via the IIM.5DVB interaction channel specification for DECTA DECT infrastructure can support the implementation of the interaction channel for DVB broadcasting systems byproviding a wireless bi-directional communication path between the user terminal and an infrastructure connecting to theservice provider.The basic characteristics of DECT are described in annex A.5.1System architectureThe Interactive Interface Module (IIM) is implemented through a DECT Portable Part (PP) (see figure 3). The DECTPP can be internal or external to the STB.SIST EN 301 193 V1.1.1:2003

ETSIEN 301 193 V1.1.1 (1998-07)9Set Top Box (STB)Can be external to the STBDECT FPInteractionchannelsIWUDECT PP(IIM)DECTFTBroadcastInterfaceModuleSet TopUnit (STU)BroadcastingDeliveryMediaPSTN,ISDN or otherDVB interactionnetworkDECTWRSBroadcastServiceProviderInteractiveServiceProviderBroadcastNetworkAdapterInteractiveNetworkAdapterFigure 3: System architecture when DECT is used as the interaction channelDECT is a wireless access technology, not a complete network or system. Therefore, DECT Fixed Parts (FP) are part ofthe interaction network. A DECT FP includes an Inter-Working Unit (IWU) which handles the interconnection of DECTwith the Interactive Network Adapter (INA) via another interaction network.5.2Physical interfacesThe physical interfaces relate to how the DECT PP is connected to the STU, how the DECT FP is connected to otherinteraction networks and the wireless physical interfaces between DECT PP, DECT FP and DECT Wireless RelayStations (WRS). The DECT profiles specify the physical interfaces for different services and applications(see subclause 5.4).In the case of a DECT PP external to the STB, the DVB-IRD interfaces are described in EN 50201 [2].5.3Calling proceduresThe signalling protocols are specified by the DECT profiles (see subclause 5.4).5.4DECT profilesThe connection of DECT to different networks, the operation of the DECT air interface and the signalling protocols forspecific services and applications are described in the DECT profiles. A DVB operator using DECT as the interactionchannel should use DECT profiles. Several DECT profiles can be supported in a DECT system, which means that otherprofiles can be supported in parallel with the profile used to carry the DVB network independent protocols forinteractive services (see ETS 300 802 [1]).The default implementations described in subclauses 5.4.1 and 5.4.2 are based on the Radio in the local loop AccessProfile (RAP) (see ETS 300 765-2 [3]) and the Data Services Profile (DSP) PPP interworking (see EN 301 240 [4]).The RAP offers valuable operation and maintenance functions. DSP PPP interworking offers effective handling of datatraffic and describes the interworking to different fixed networks. When accessing an external DECT infrastructure,RAP functions are used in combination with the DSP PPP interworking.Due to the flexible nature of the DECT standard, several other implementation possibilities exist. Some of theimplementation alternatives are described in annex B.5.4.1Recommended DECT profiles when the DECT infrastructure isexternal to the homeThe RAP (see ETS 300 765-1 [7] and ETS 300 765-2 [3]), describes how DECT is used in Radio in the Local Loop(RLL) scenarios.SIST EN 301 193 V1.1.1:2003

ETSIEN 301 193 V1.1.1 (1998-07)10It is recommended that the IIM is represented by a DECT PP internal to the STB with a RAP Data service(see ETS 300 765-2 [3]) according to the DSP PPP interworking (see EN 301 240 [4]) implemented, when theinteraction channel is through a DECT infrastructure, external to the home (see figure 4).The DECT PP (IIM) communicates with a DECT RAP data service (DSP PPP interworking) infrastructure comprised ofFPs and possible WRSs (see ETS 300 700 [5]).A WRS relays intelligently the DECT signals between DECT FPs and DECT PPs. This STB implementation should bethe default implementation when DECT is used as the interaction channel in DVB.TVradioDECT WRSDECT RAPdata service(DSP PPPinterworking)STB [DECT PP RAPdata service (DSP PPPinterwork
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