ETSI EN 300 175-1 V1.4.2 (1999-06)
Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 1: Overview
Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 1: Overview
REN/DECT-000129-1
Digitalne izboljšane brezvrvične telekomunikacije (DECT) – Skupni vmesnik (CI) – 1. del: Pregled
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 1: Overview33.070.30'(&7Digital Enhanced Cordless Telecommunications (DECT)ICS:Ta slovenski standard je istoveten z:EN 300 175-1 Version 1.4.2SIST EN 300 175-1 V1.4.2:2003en01-december-2003SIST EN 300 175-1 V1.4.2:2003SLOVENSKI
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SIST EN 300 175-1 V1.4.2:2003
EN 300 175-1 V1.4.2 (1999-06)European Standard (Telecommunications series)Digital Enhanced Cordless Telecommunications (DECT);Common Interface (CI);Part 1: OverviewSIST EN 300 175-1 V1.4.2:2003
ETSIETSI EN 300 175-1 V1.4.2 (1999-06)2ReferenceREN/DECT-000129-1 (1mc90jdc.PDF)KeywordsDECT, radioETSIPostal 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.frIndividual copies of this ETSI deliverablecan be downloaded fromhttp://www.etsi.orgIf you find errors in the present document, send yourcomment to: editor@etsi.frCopyright 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 1999.All rights reserved.SIST EN 300 175-1 V1.4.2:2003
ETSIETSI EN 300 175-1 V1.4.2 (1999-06)3ContentsIntellectual Property Rights.4Foreword.41Scope.52References.53Definitions and abbreviations.63.1Definitions.63.2Abbreviations.134Structure.164.1Part 1: Overview.164.2Part 2: Physical Layer (PHL).164.3Part 3: Medium Access Control (MAC) layer.164.4Part 4: Data Link Control (DLC) layer.164.5Part 5: Network (NWK) layer.164.6Part 6: Identities and addressing.164.7Part 7: Security features.174.8Part 8: Speech coding and transmission.175The objectives of the CI standard.176General description of the system.187Description of the protocol architecture.197.1General.197.2The DECT layered structure.197.3Physical Layer (PHL).197.4MAC layer.207.5DLC layer.207.6Network (NWK) layer.207.7Lower Layer Management Entity (LLME).207.8Interworking Units (IWU).218Proprietary escapes within the CI.218.1Primary escape routes.218.2Secondary escape routes.229Levels of conformance.22History.23SIST EN 300 175-1 V1.4.2:2003
ETSIETSI EN 300 175-1 V1.4.2 (1999-06)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.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 ETSI Project Digital Enhanced CordlessTelecommunications (DECT).The present document is part 1 of a multi-part EN covering the Common Interface (CI) for the Digital EnhancedCordless Telecommunications (DECT), as identified below:Part 1:"Overview";Part 2:"Physical Layer (PHL)";Part 3:"Medium Access Control (MAC) layer";Part 4:"Data Link Control (DLC) layer";Part 5:"Network (NWK) layer";Part 6:"Identities and addressing";Part 7:"Security features";Part 8:"Speech coding and transmission".The following aspects of the present document are subject to controlled distribution:a)DECT identities, as defined in EN 300 175-6 [5];b)DECT cryptographic algorithms.The cryptographic algorithms specify the details of the DECT standard authentication algorithm and the DECT standardcipher.These aspects are distributed on an individual basis. Further information and details of the current distributionprocedures can be obtained from the ETSI Secretariat at the address on the second page of the present document.Further details of the DECT system may be found in ETR 015 [9], ETR 043 [11] and ETR 056 [12].National transposition datesDate of adoption of this EN:28 May 1999Date of latest announcement of this EN (doa):31 August 1999Date of latest publication of new National Standardor endorsement of this EN (dop/e):29 February 2000Date of withdrawal of any conflicting National Standard (dow):29 February 2000SIST EN 300 175-1 V1.4.2:2003
ETSIETSI EN 300 175-1 V1.4.2 (1999-06)51ScopeThe present document gives an introduction and overview of the complete Digital Enhanced CordlessTelecommunications (DECT) Common Interface (CI).This part of the DECT CI contains an abstract of the other parts of the DECT standard together with a generaldescription of:-the objectives of the present document;-the DECT CI;-the protocol architecture of DECT.The present document also provides an extensive vocabulary, in particular it contains the common definitions of all thetechnical terms used in different parts of the present document.2ReferencesThe following documents contain provisions which, through reference in this text, constitute provisions of the presentdocument.· References are either specific (identified by date of publication, edition number, version number, etc.) ornon-specific.· For a specific reference, subsequent revisions do not apply.· For a non-specific reference, 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.[1]EN 300 175-2: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);Part 2: Physical Layer (PHL)".[2]EN 300 175-3: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);Part 3: Medium Access Control (MAC) layer".[3]EN 300 175-4: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);Part 4: Data Link Control (DLC) layer".[4]EN 300 175-5: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);Part 5: Network (NWK) layer".[5]EN 300 175-6: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);Part 6: Identities and addressing".[6]EN 300 175-7: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);Part 7: Security features".[7]EN 300 175-8: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI);Part 8: Speech coding and transmission".[8]EN 300 176: "Digital Enhanced Cordless Telecommunications (DECT); Approval testspecification; (Part 1: Radio; Part 2: Speech)".[9]ETR 015: "Digital Enhanced Cordless Telecommunications (DECT); Reference document".[10]ETR 042: "Digital Enhanced Cordless Telecommunications (DECT); A Guide to DECT featuresthat influence the traffic capacity and the maintenance of high radio link transmission quality,including the results of simulations".SIST EN 300 175-1 V1.4.2:2003
ETSIETSI EN 300 175-1 V1.4.2 (1999-06)6[11]ETR 043: "Digital Enhanced Cordless Telecommunications (DECT); Common interface; Servicesand facilities requirements specification".[12]ETR 056: "Digital Enhanced Cordless Telecommunications (DECT); System descriptiondocument".[13]EN 300 403-1: "Integrated Services Digital Network (ISDN); Digital Subscriber Signalling SystemNo. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control; Part 1:Protocol specification [ITU-T Recommendation Q.931 (1993), modified]".[14]CEPT Recommendation T/SGT SF2 (89) 6/0: "Draft Recommendation T/SF Services andFacilities of Digital European Cordless Telecommunications".[15]CCIR Report 662 (1978): "Definition of spectrum use and efficiency".3Definitions and abbreviations3.1DefinitionsFor the purposes of the present document, the following terms and definitions apply:antenna diversity: diversity implies that the Radio Fixed Part (RFP) for each bearer independently can select differentantenna properties such as gain, polarization, coverage patterns, and other features that may effect the practicalcoverage. A typical example is space diversity, provided by two vertically polarized antennas separated by 10 - 20 cm.attach: process whereby a Portable Part (PP) within the coverage area of a Fixed Part (FP) to which it has access rights,notifies the FP that it is operative. The reverse process is detach, which reports the PP as inoperative.NOTE 1:An operative PP is assumed to be ready to receive calls.authentication (of a subscriber): process whereby a DECT subscriber is positively verified to be a legitimate user of aparticular FP.NOTE 2:Authentication is generally performed at call set-up, but may also be done at any other time (e.g. during acall).bearer: see Medium Access Control (MAC) bearer or bearer service.bearer handover: internal handover process provided by the MAC layer, whereby one MAC connection can modify itsunderlying bearers while maintaining the service provided to the Data Link Control (DLC) layer.NOTE 3:Bearer handover is slot based.bearer service: type of telecommunication service that provides a defined capability for the transmission of signalsbetween user-network interfaces.NOTE 4:The DECT user-network interface corresponds to the top of the DECT network layer (layer 3).broadcast: simplex point-to-multipoint mode of transmission.NOTE 5:The transmitter may disregard the presence or absence of receivers.C-plane: control plane of the DECT protocol stacks, which contains all of the internal DECT protocol control, but mayalso include some external user information.NOTE 6:The C-plane stack always contains protocol entities up to and including the network layer.call: all of the Network (NWK) layer processes involved in one NWK layer peer-to-peer association.NOTE 7:Call may sometimes be used to refer to processes of all layers, since lower layer processes are implicitlyrequired.SIST EN 300 175-1 V1.4.2:2003
ETSIETSI EN 300 175-1 V1.4.2 (1999-06)7cell: domain served by a single antenna(e) system (including a leaky feeder) of one FP.NOTE 8:A cell may include more than one source of radiated Radio Frequency (RF) energy (i.e. more than oneradio end point).Central Control Fixed Part (CCFP): physical grouping that contains the central elements of a FP. A FP contains amaximum of one CCFP.NOTE 9:A CCFP controls one or more RFPs.centrex: implementation of a private telecommunication network exchange that is not located on the premises of theprivate network operator. It may be co-located with, or physically a part of a public exchange.channel: see physical channel.cluster: logical grouping of one or more cells between which bearer handover is possible. A Cluster Control Function(CCF) controls one cluster.NOTE 10:Internal handover to a cell which is not part of the same cluster can only be done by connection handover.connection: see "MAC connection".connection handover: internal handover process provided by the DLC layer, whereby one set of DLC entities (C-planeand U-plane) can re-route data from one MAC connection to a second new MAC connection, while maintaining theservice provided to the NWK layer.NOTE 11:Connection handover is DLC frame based.Connectionless mode (C/L): transmission mode that transfers one packet (one self contained unit) of data from onesource point to one (or more) destination points in a single phase.NOTE 12:Connectionless transmissions require the peer-to-peer associations to be prearranged, and the transmissionis unacknowledged at that layer.Connection Oriented mode (C/O): transmission mode that transfers data from one source point to one or moredestination points using a protocol based on three phases: "Set-up", "Data transfer" and "Release".NOTE 13:C/O mode requires no prearranged associations between peer entities (unlike C/L mode).Cordless Radio Fixed Part (CRFP): Wireless Relay Station (WRS) that provides independent bearer control to a PTand FT for relayed connections.coverage area: area over which reliable communication can be established and maintained.DECT Network (DNW): network that uses the DECT air interface to interconnect a local network to one or moreportable applications. The logical boundaries of the DECT network are defined to be at the top of the DECT NWKlayer.NOTE 14:A DNW is a logical grouping that contains one or more Fixed radio Terminations (FTs) plus theirassociated Portable radio Termination (PT). The boundaries of the DECT network are not physicalboundaries.DLC broadcast: simplex "connectionless" mode of transmission from the DLC broadcast entity of one FT to the DLCbroadcast entities in one or more PT.NOTE 15:The transmitter may disregard the presence or absence of receivers.DLC data link (DLC link): association between two DLC layer entities. This can either be one C-plane association orone U-plane association.NOTE 16:This is not the same as a MAC connection.DLC frame: format used to structure all messages that are exchanged between DLC layer peer entities.NOTE 17:Different DLC frames are used in the C-plane and the U-plane, and there is more than one format of DLCframe in each plane.SIST EN 300 175-1 V1.4.2:2003
ETSIETSI EN 300 175-1 V1.4.2 (1999-06)8double duplex bearer: use of two duplex bearers (see duplex bearer) which refer to the same MAC connection, sharingtheir simplex bearers (see simplex bearer) for the information flow.double-simplex bearer: use of two simplex bearers operating in the same direction on two physical channels. Thesepairs of channels always use the same RF carrier and always use evenly spaced slots (i.e. separated by 0,5 Time DivisionMultiple Access (TDMA) frame).A double-simplex bearer only exists as part of a multibearer MAC connection.down-link: transmission in the direction FT to PT.duplex bearer: use of two simplex bearers operating in opposite directions on two physical channels. These pairs ofchannels always use the same RF carrier and always use evenly spaced slots (i.e. separated by 0,5 TDMA frame).End System (ES): logical grouping that contains application processes and supports telecommunication services.NOTE 18:From the OSI point of view, end systems are considered as sources and sinks of information.external handover: process of switching a call in progress from one FP to another FP.field: continuous region of data (i.e. adjacent bits) that jointly convey information. Typically, a message will containseveral fields. If data is not continuous then it is defined as two (or more) fields.Fixed Part (DECT Fixed Part) (FP): physical grouping that contains all of the elements in the DECT network betweenthe local network and the DECT air interface.NOTE 19:A DECT FP contains the logical elements of at least one FT, plus additional implementation specificelements.Fixed radio Termination (FT): logical group of functions that contains all of the DECT processes and procedures onthe fixed side of the DECT air interface.NOTE 20:A FT only includes elements that are defined in EN 300 175 parts 1 to 8. This includes radio transmissionelements (layer 1) together with a selection of layer 2 and layer 3 elements.flow control: mechanism that is used to regulate the flow of data between two peer entities.fragment: one of the Service Data Units (SDUs) that is produced by the process of fragmentation.NOTE 21:This is not the same as a segment.fragmentation: process of dividing a Protocol Data Unit (PDU) into more than one SDU for delivery to a lower layer.The reverse process is recombination.NOTE 22:This is not the same as segmentation.frame: see TDMA frame or DLC frame.full slot (slot): one 24th of a TDMA frame which is used to support one physical channel.generic: generalized set or general purpose set, often in the sense of basic or ordinary.geographically unique: this term relates to FP identities, Primary Access Rights Identifiers (PARIs) and Radio FixedPart Identifiers (RFPIs). It indicates that two FPs with the same PARI, or respectively two RFPs with the same RFPI,can not be reached or listened to at the same geographical position.Global NetWork (GNW): telecommunication network capable of offering a long distance telecommunication service.NOTE 23:The term does not include legal or regulatory aspects, nor does it indicate if the network is a public or aprivate network.globally unique identity: identity is unique within DECT (without geographical or other restrictions).SIST EN 300 175-1 V1.4.2:2003
ETSIETSI EN 300 175-1 V1.4.2 (1999-06)9guard space: nominal interval between the end of a radio transmission in a given slot, and the start of a radiotransmission in the next successive slot.NOTE 24:This interval is included at the end of every slot, in order to prevent adjacent transmissions fromoverlapping even when they originate with slightly different timing references (e.g. from different radioend points).half slot: one 48th of a TDMA frame which is used to support one physical channel.handover: process of switching a call in progress from one physical channel to another physical channel. Theseprocesses can be internal (see internal handover) or external (see external handover).NOTE 25:There are two physical forms of handover, intracell handover and intercell handover. Intracell handover isalways internal, intercell handover can be internal or external.incoming call: call received at a PP.intercell handover: switching of a call in progress from one cell to another cell.internal handover: handover processes that are completely internal to one FT. Internal handover reconnects the call atthe lower layers, while maintaining the call at the NWK layer.NOTE 26:The lower layer reconnection can either be at the DLC layer (see connection handover) or at the MAClayer (see bearer handover).interoperability: capability of FPs and PPs, that enable a PP to obtain access to teleservices in more than one locationarea and/or from more than one operator (more than one service provider).interoperator roaming: roaming between FP coverage areas of different operators (different service providers).Interworking Unit (IWU): unit that is used to interconnect subnetworks.NOTE 27:The IWU will contain the InterWorking Functions (IWF) necessary to support the required subnetworkinterworking.intracell handover: switching of a call in progress from one physical channel of one cell to another physical channel ofthe same cell.intraoperator roaming: roaming between different FP coverage areas of the same operator (same service provider).Isochronous: essential characteristic of a time-scale or a signal such that the time intervals between consecutivesignificant instants either have the same duration or durations that are integral multiples of the shortest duration (ITU-TRecommendation R.140: "Definition of essential terms in the field of Telegraph transmission", definition 6014).link: see DLC data link.Local Network (LNW): telecommunication network capable of offering local telecommunication services.NOTE 28:The term does not include legal or regulatory aspects, nor does it indicate if the network is a publicnetwork or a private network.locally unique identity: identity is unique within one FP or location area, depending on application.location area: domain in which a PP may receive (and/or make) calls as a result of a single location registration.location registration: process whereby the position of a DECT portable termination is determined to the level of onelocation area, and this position is updated in one or more databases.NOTE 29:These databases are not included within the DECT FT.logical channel: generic term for any distinct data path. Logical channels can be considered to operate between logicalend points.SIST EN 300 175-1 V1.4.2:2003
ETSIETSI EN 300 175-1 V1.4.2 (1999-06)10Lower Layer Management Entity (LLME): management entity that spans a number of lower layers, and is used todescribe all control activities which do not follow the rules of layering.NOTE 30:The DECT LLME spans the NWK layer, the DLC layer, the MAC layer and the PHL.MAC bearer (bearer): MAC bearers are the service elements that are provided by each Cell Site Function (CSF). EachMAC bearer corresponds to a single service instance to the physical layer. See also simplex bearer, duplex bearer anddouble simplex bearer.MAC connection (connection): association between one source MAC Multi-Bearer Control (MBC) entity and onedestination MAC MBC entity. This provides a set of related MAC services (a set of logical channels), and it can involveone or more underlying MAC bearers.Mobility class 1: local area applications, for which terminals are pre-registered off-air with one or more specific fixedparts, and establishment of service and user parameters is therefore implicit, according to a profile-defined list.Mobility class 2: private and public roaming applications for which terminals may move between FPs within a givendomain and for which association of service parameters is explicit at the time of service request.minimal MMS-message attributes: message meta-information used in the request-to-send, etc.MMS-message attributes: message meta-information.multiframe: repeating sequence of 16 successive TDMA frames, that allows low rate or sporadic information to bemultiplexed (e.g. basic system information or paging).Multimedia Messaging Service: is a generic set of commands, information elements and functionality forfile/messaging service.network (telecommunication network): all the means of providing telecommunication services between a number oflocations where the services are accessed via equipment attached to the network.node: point at which switching occurs.operator (DECT operator): individual or entity who or which is responsible for operation of one or more DECT FPs.NOTE 31:The term does not imply any legal or regulatory conditions, nor does it imply any aspects of ownership.outgoing call: call originating from a PP.paging: process of broadcasting a message from a DECT FP to one or more DECT PPs.NOTE 32:Different types of paging message are possible. For example, the {Request paging} message orders therecipient to respond with a call set-up attempt.paging area: domain in which the PP will be paged as a part of incoming call establishment.NOTE 33:In general, the paging area will be equal to the Temporary Portable User Identity (TPUI) domain, sincethe TPUI is used for paging.phase: one discrete part of a procedure, where the start and end of the part can be clearly identified (e.g. by the arrivalor dispatch of a primitive).physical channel (channel): simplex channel that is created by transmitting in one particular slot on one particular RFchannel in successive TDMA frames. See also simplex bearer.NOTE 34:One physical channel provides a simplex service. Two physical channels are required to provide a duplexservice.Portable Application (PA): logical grouping that contains all the elements that lie beyond the DECT network boundaryon the portable side.NOTE 35:The functions contained in the portable application may be physically distributed, but any suchdistribution is invisible to the DECT network.SIST EN 300 175-1 V1.4.2:2003
ETSIETSI EN 300 175-1 V1.4.2 (1999-06)11Portable Handset (PHS): single physical grouping that contains all of the portable elements that are needed to providea teleservice to the user.NOTE 36:PHS is a subset of all possible portable parts. This subset includes all physical groupings that combine onePT plus at least one portable application in a single physical box.Portable Part (DECT Portable Part) (PP): physical grouping that contains all elements between the user and theDECT air interface. PP is a generic term that may describe one or several physical pieces.NOTE 37:A DECT PP is logically divided into one PT plus one or more portable applications.Portable radio Termination (PT): logical group of functions that contains all of the DECT processes and procedureson the portable side of the DECT air interface.NOTE 38:A PT only includes elements that are defined in EN 300 175. This includes radio transmission elements(layer 1) together with a selection of layer 2 and layer 3 elements.primitive: distinct (but abstract) data element that is passed between adjacent protocol layers.NOTE 39:A service primitive contains one SDU.private: attribute indicating that the application of the so qualified term, e.g. a network, an equipment, a service, isoffered to, or is in the interest of, a determined set of users.NOTE 40:The term does not include any legal or regulatory aspects, nor does it indicate any aspects of ownership.public: attribute indicating that the application of the so qualified term, e.g. a network, an equipment, a service, isoffered to, or is in the interest of, the general public.NOTE 41:The term does not include any legal or regulatory aspects, nor does it indicate any aspects of ownership.Public Access Profile (PAP): profile which ensures interoperability between FPs and PPs for public access services.public access service: service that provides access to a public network for the general public.NOTE 42:The term does not imply any legal or regulatory aspect, nor does it imply any aspects of ownership.radio channel: no defined meaning. See RF channel or physical channel.radio end point: physical grouping that contains one radio transceiver (transmitter/receiver), fixed or portable.NOTE 43:A radio end point may operate only as a receiver or only as a transmitter.Radio Fixed Part (RFP): one physical sub-group of a FP that contains all the radio end points (one or more) that areconne
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