ETSI ETS 300 752 ed.1 (1997-09)
Radio Equipment and Systems (RES); Terrestrial Flight Telecommunications System (TFTS); Packet mode data
Radio Equipment and Systems (RES); Terrestrial Flight Telecommunications System (TFTS); Packet mode data
DE/RES-05-01/2
Radijska oprema in sistemi (RES) - Prizemni letalski telekomunikacijski sistem (TFTS) - Podatki v paketnem načinu
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Radio Equipment and Systems (RES); Terrestrial Flight Telecommunications System (TFTS); Packet mode data49.060Aerospace electric equipment and systems33.060.20Sprejemna in oddajna opremaReceiving and transmitting equipmentICS:Ta slovenski standard je istoveten z:ETS 300 752 Edition 13SIST ETS 300 752:2001en01-IHEUXDU-20013SIST ETS 300 752:2001SLOVENSKI
STANDARD
SIST ETS 300 752:2001
EUROPEAN ETS 300 752TELECOMMUNICATION September 1997STANDARDSource: RES Reference: DE/RES-05-01/2ICS:33.020Key words:Aeronautical, data, packet mode, radio, TFTSRadio Equipment and Systems (RES);Terrestrial Flight Telecommunications System (TFTS);Packet mode dataETSIEuropean Telecommunications Standards InstituteETSI SecretariatPostal address: F-06921 Sophia Antipolis CEDEX - FRANCEOffice address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCEX.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariat@etsi.frTel.: +33 4 92 94 42 00 - Fax: +33 4 93 65 47 16Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and theforegoing restriction extend to reproduction in all media.© European Telecommunications Standards Institute 1997. All rights reserved.SIST ETS 300 752:2001
Page 2ETS 300 752: September 1997Whilst every care has been taken in the preparation and publication of this document, errors in content,typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to"ETSI Editing and Committee Support Dept." at the address shown on the title page.SIST ETS 300 752:2001
Page 3ETS 300 752: September 1997ContentsForeword.71Scope.92Normative references.93Abbreviations.103.1Definitions.103.2Abbreviations.103.3Symbols.114Service definition.114.1Packet mode services.115Network architecture.125.1Support of multiple network layer protocols.125.2Data transmission.125.3AT functionality.135.3.1Interworking function.135.3.2Location registration procedure.135.3.3Dynamic resource management.135.4GSS functionality.135.4.1Administrative aspects.145.4.1.1Data call phases and activities.145.4.1.2Collection of data for call charging.155.5CIF functionality.155.5.1Interworking with GSSs.165.5.2TFTS packet messages conversion.165.5.3Address conversion.166End to end data flow.176.1CALL management procedures.176.1.1AT originated call establishment.176.1.2CIF originated call establishment.176.1.3Data transfer.186.1.4Handover procedures.186.1.5Call clearing procedures.186.2Scenarios.187AT to GSS interface aspects.187.1General.187.2Layer 2 aspects.197.3AT location registration procedure.207.4Data transfer services provided by signalling layer 3 on the AT side.207.4.1General.207.4.2Service states at the AT side of the AT-GSS interface.217.5Data transfer services provided by signalling layer 3 on the GSS side.217.5.1General.217.5.2Service states at the GSS side of the AT-GSS interface.217.6Dynamic resource management.227.6.1General.227.6.2Varying throughput transmission.227.6.2.1Aircraft-originated throughput modification.227.6.2.2Ground initiated throughput modification.237.6.3Decision strategy.247.6.3.1Throughput increase.247.6.3.2Throughput decrease.25SIST ETS 300 752:2001
Page 4ETS 300 752: September 19977.7Elementary procedures for packet switched data transfer.257.7.1General.257.7.2DTM states.257.7.2.1Call states at the AT side of the interface (see figure C.1).257.7.2.2Call states at the GSS side of the interface (see figureC.2).257.7.2.3Packet-switched DTM procedures.267.7.3Aircraft location management.267.7.3.1General.267.7.3.2Location registration.267.7.3.2.1General.267.7.3.2.2Connection request.277.7.3.2.3Connection confirmation.277.7.3.2.4Connection rejection.277.7.3.2.5Connection release.277.7.3.3Location update.277.7.4Aircraft originating call establishment procedures.277.7.4.1General.277.7.4.2Call request.287.7.4.3Call connected.287.7.4.4Call rejection.287.7.5Ground originating call establishment procedures.287.7.5.1General.287.7.5.2Call connected.297.7.6Call clearing.297.7.6.1Exception conditions.297.7.6.2Clearing initiated by the AT.297.7.6.3Clearing initiated by the GSS.297.7.6.4Completion of clearing.307.7.6.5Clear collision.307.7.7Miscellaneous procedures.307.7.7.1Data transfer air-to-ground.307.7.7.2Data transfer ground-to-air.307.7.7.3Timer expiry.307.7.7.4Handover.307.7.7.4.1AT side.307.7.7.4.2GSS side.317.7.7.5Resource management.317.7.7.5.1General.317.7.7.5.2Throughput increase.317.7.7.5.3Throughput decrease.327.8Handling of error conditions.337.8.1General treatment of error conditions.337.8.2Message type error.337.8.3Mandatory information element error.337.9Message functional definitions and contents.347.9.1DTM messages.347.9.1.1Connect.347.9.1.2Disconnect.357.9.1.3Packet data transfer (PD1).357.9.1.4Packet data transfer (PD2).367.9.2Supplementary RRM messages.367.9.2.1Throughput modification request.367.9.2.2Throughput modification command.377.9.2.3Throughput modification reject.377.10General message format and information elements coding.377.10.1Overview.387.10.2Protocol discriminator.387.10.3Transaction identifier.387.10.4Message type.387.10.5Supplementary RRM information elements.397.10.5.1Capacity request.397.10.5.2Slot allocation.40SIST ETS 300 752:2001
Page 5ETS 300 752: September 19977.10.6DTM information elements.407.10.6.1DTM-cause.407.10.6.2Data information.417.11List of system parameters.417.11.1Timers for data transfer on the AT side.417.11.2Timers for data transfer on the GSS side.417.12Definition of primitive parameters.427.12.1Primitive parameters for DTM.427.12.2Additional primitive parameters for the RR service.428Interworking at the GSS.438.1General.438.2Relay function description.438.3DTM states at the GSS side of the AT-GSS and GSS-CIF interfaces.439GSS to CIF interface aspects.449.1General.449.2Data transfer services provided by signalling layer 3 on GSS side.449.2.1General GSS.449.2.2Service state diagram GSS.459.3Data transfer services provided by signalling layer 3 on the CIF side.459.3.1General.459.3.2Service state diagram CIF.459.4Elementary procedures for packet switched DT.469.4.1Overview.469.4.1.1General.469.4.2DTM states.469.4.2.1Call states at the GSS side of the interface.469.4.2.2Call states at the CIF side of the interface.469.4.2.3Packet-switched DTM procedures.479.4.3GSS originating call establishment procedures.479.4.3.1Call request.479.4.3.2Call connected.479.4.4CIF originating call establishment procedures.489.4.4.1Call request.489.4.4.2Call connected.489.4.5Call clearing.489.4.5.1Clearing initiated by the CIF.489.4.5.2Clearing initiated by the GSS.499.4.5.3Completion of clearing.499.4.6Miscellaneous procedures.499.4.6.1Data transfer GSS-to-CIF.499.4.6.2Data transfer ground to air.499.4.6.3Handover.499.4.6.3.1GSS side.499.4.6.3.2CIF side.509.5Handling of error conditions.509.5.1General treatment of error conditions.509.5.2Message type error.509.5.3Mandatory information element error.509.6Message functional definitions and contents.519.6.1X.25 layer 3 sublayer.519.6.2Data transfer management sublayer.519.6.2.1Message type.519.6.2.2Packet data transfer (PD1).529.6.2.3Packet data transfer (PD2).529.6.2.4Connect.529.6.2.5Disconnect.529.7General message format and information elements coding.539.7.1CIF indicator.539.7.2DTM cause.539.7.3Data information.549.8List of system parameters.54SIST ETS 300 752:2001
Page 6ETS 300 752: September 19979.8.1 Timers for data transfer on the GSS side.549.8.2Timers for data transfer on the CIF side.549.9Definition of primitive parameters.55Annex A (informative):Information on expected usage of data service.56A.1Status update information.56A.2File transfer.56A.3Information update.56A.4Interactive services.56Annex B (informative):Scenarios.57Annex C (informative):SDL of TFTS layer 3 DTM processes.74History.125SIST ETS 300 752:2001
Page 7ETS 300 752: September 1997ForewordThis European Telecommunication Standard (ETS) has been produced by the Radio Equipment andSystems (RES) Technical Committee of the European Telecommunications Standards Institute (ETSI).Transposition datesDate of adoption:5 September 1997Date of latest announcement of this ETS (doa):31 December 1997Date of latest publication of new National Standardor endorsement of this ETS (dop/e):30 June 1998Date of withdrawal of any conflicting National Standard (dow):30 June 1998SIST ETS 300 752:2001
Page 8ETS 300 752: September 1997Blank pageSIST ETS 300 752:2001
Page 9ETS 300 752: September 19971ScopeThis European Telecommunication Standard (ETS) deals with the procedures allowing the technicalrealization of packet mode data with the Terrestrial Flight Telecommunications System (TFTS)environment using transparent network support according to the teleservice definitions contained inETS 300 326-1 [1].The TFTS packet data transmission services build on the existing architecture defined in ETS 300 326 [1], [2]and [3] introducing a new network function termed the Centralised Interworking Function (CIF). The selectionof a networking protocol, and its definition is outside the scope of this ETS. The use of a particularprotocol does not constrain the actual implementation of CIF functionality.Transport layer aspectsIn order to ensure the resolution of lost or duplicated packets arising from handover, it is assumed that thehigher layers implement an end to end acknowledgement function.2Normative referencesThis ETS incorporates by dated and undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text and the publications are listedhereafter. For dated references, subsequent amendments to or revisions of any of these publicationsapply to this ETS only when incorporated in it by amendment or revision. For undated references the latestedition of the publication referred to applies.[1]ETS 300 326-1: "Radio Equipment and Systems (RES); Terrestrial FlightTelephone System (TFTS); Part 1: Speech services, facilities andrequirements".[2]ETS 300 326-2 (1996): "Radio Equipment and Systems (RES); Terrestrial FlightTelephone System (TFTS); Part 2: Speech services, radio interface".[3]ETS 300 326-3: "Radio Equipment and Systems (RES); Terrestrial FlightTelephone System (TFTS); Part 3: Speech services, network aspects".[4]ITU-T Recommendation X.25: "Interface between Data Terminal Equipment(DTE) and Data Circuit-terminating Equipment (DCE) for terminals operating inthe packet mode and connected to public data networks by dedicated circuit".[5]ITU-T Recommendation X.121: "International numbering plan for public datanetworks".[6]ARINC Characteristic 746-4: "Cabin Communication Systems (CCS)".[7]ISO 9577: "Information technology - Protocol identification in the network layer".[8]ITU-T Recommendation Q.931: "Digital subscriber Signalling System No. 1(DSS1) - ISDN user-network interface layer 3 specification for basic call control".[9]Internet Architecture Board RFC 791: "Internet Protocol - DARPA InternetProgram protocol specification".[10]Internet Architecture Board RFC 793: "Transmission Control Protocol - DARPAInternet Program protocol specification".SIST ETS 300 752:2001
Page 10ETS 300 752: September 19973Abbreviations3.1DefinitionsFor the purposes of this ETS, the following definitions apply:Ba channel: A channel which carries either:-a 9,6 kbit/s bit stream with an error structure and transmission delay suitable to carry voiceencoded information; or-a bit stream at a gross rate of 9,6 kbit/s with an error structure and transmission delayadapted to a wider range of services.La channel: A channel with a gross data rate of 2,4 kbit/s.Ma channel: A channel with a gross data rate of 4,8 kbit/s.PACKET DATA TRANSFER: The mechanism of transporting messages between the avionic terminationand the ground station system.Ua interface: The interface between the Avionic Termination (AT) and the Ground Station System (GSS)(ETS 300 326-2 [2]).3.2AbbreviationsFor the purposes of this ETS, the following abbreviations apply:ACARSAircraft Communications, Addressing and Reporting SystemASAircraft StationATAvionic TerminationATEIAvionic Termination Equipment IdentifierBCCH(D)Broadcast Control CHannel (Data)CCCall ControlCIFCentralised Interworking FunctionCMConnection ManagementCTUCabin Telecommunication UnitDCCHDedicated Control CHannelDTData TransmissionDTMData Transmission ManagementDTM-SAPData Transmission Management Service Access PointFACCHFast Associated Control CHannel (a case of a DCCH)FCTFlow Control ThresholdGSGround StationGSCGround Switching CentreGSICGround Station Identity CodeGSSGround Station SystemIEInformation ElementIEIInformation Element IdentifierIPIInitial Protocol IdentifierMFMandatory with Fixed lengthMN-SAPMobile Network Service Access PointMVMandatory with Variable lengthOFOptional with Fixed lengthOVOptional with Variable lengthPSDNPacket Switched Data NetworkRRRadio ResourcesRRMRadio Resource ManagementSACCHSlow Associated Control CHannel (a case of a DCCH)SAPService Access PointSAPIService Access Point IdentifierSDLSystem Description LanguageSIST ETS 300 752:2001
Page 11ETS 300 752: September 1997TCTThroughput Control ThresholdTETerminal EquipmentTFTSTerrestrial Flight Telecommunications SystemTITransaction IdentifierVCVirtual CircuitX.25 RNRX.25 [4] Receiver Not Ready messageX.25 RRX.25 [4] Receiver Ready message3.3SymbolsFor the purposes of this ETS, the following symbols apply:bpsbits per secondclrclearcnfconfirmconnconnectionCONNCONNECTDISCDISCONNECTest establishindindicationkbit/skilobits per secondPDPacket Datapendpendingrelreleasereqrequestrespresponsetranstransport4Service definitionThis ETS specifies support for the following data types:-packet transport on the TFTS radio interface.The TFTS packet data transmission service allows an aircraft application to send and receive data in anend-to-end, point-to-point, connection-oriented mode.4.1Packet mode servicesThe types of packet mode services supported by the TFTS packet transport service may include thefollowing:-status update information;-file transfer;-information update;-interactive services.Annex A provides further information.SIST ETS 300 752:2001
Page 12ETS 300 752: September 19975Network architectureThe TFTS packet data transmission services builds on the existing architecture defined in ETS 300 326 [1],[2] and [3] introducing a new network function termed the Centralised Interworking Function (CIF). Thisfunction provides the interworking between the transport mode used between the Avionic Termination (AT)and the Ground Station System (GSS), and that used in the public data network. The interface between theAT and the GSS for the TFTS packet data transmission is defined in clause 7 of this ETS. The interfacebetween the GSS and the CIF is defined in clause 9 of this ETS. The interface between the CIF and thepublic network is not defined in this ETS but is assumed to be compliant with international standards for dataservices and in particular for packet data, e.g. ITU-T Recommendation X.25 [4]. Similarly, the interfacebetween the AT and the aircraft Terminal Equipment (TE) is not defined in this ETS, but is assumed to becompliant with international standards for data services and in particular for packet data, e.g. ITU-TRecommendation X.25 [4] or ARINC Characteristic 746-4 [6].This ETS defines the basic packet transport mechanism required to transport packets from the AT to theGSS and the reverse. It does not address the way in which the end-to-end packet service operates.Figure 1: Packet mode architectureFigure 1 shows the architecture of the system showing the Ua interface defined in ETS 300 326-2 [2],subclause 6.2 figure 5 and a new interface 1d between the GSS and CIF.5.1Support of multiple network layer protocolsThe TFTS packet mode service provides for the transparent transfer of arbitrary binary data betweenonboard avionics equipment and the ground user. The TFTS packet mode service provides no constraintson network protocol used. Typical examples of protocols that may be used are ITU-T RecommendationX.25 [4] and Internet Architecture Board RFC 791 [9] and RFC 793 [10].The interworking between the ground user and the TFTS network is carried out by the CIF. The first octetof the data field defined in subclause 7.9.1 shall be an Initial Protocol Identifier (IPI). IPIs can conform toISO 9577 [7], in which case the message shall conform to subclause 7.9.1.3; or be defined within TFTS, inwhich
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SLOVENSKI STANDARD
SIST ETS 300 752:2001
01-september-2001
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Radio Equipment and Systems (RES); Terrestrial Flight Telecommunications System
(TFTS); Packet mode data
Ta slovenski standard je istoveten z: ETS 300 752 Edition 1
ICS:
33.060.20 Sprejemna in oddajna Receiving and transmitting
oprema equipment
49.060 /HWDOVNDLQYHVROMVND Aerospace electric
HOHNWULþQDRSUHPDLQVLVWHPL equipment and systems
SIST ETS 300 752:2001 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST ETS 300 752:2001
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SIST ETS 300 752:2001
EUROPEAN ETS 300 752
TELECOMMUNICATION September 1997
STANDARD
Source: RES Reference: DE/RES-05-01/2
ICS: 33.020
Key words: Aeronautical, data, packet mode, radio, TFTS
Radio Equipment and Systems (RES);
Terrestrial Flight Telecommunications System (TFTS);
Packet mode data
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariat@etsi.fr
Tel.: +33 4 92 94 42 00 - Fax: +33 4 93 65 47 16
Copyright Notification: No 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 1997. All rights reserved.
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SIST ETS 300 752:2001
Page 2
ETS 300 752: September 1997
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.
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ETS 300 752: September 1997
Contents
Foreword .7
1 Scope .9
2 Normative references.9
3 Abbreviations.10
3.1 Definitions .10
3.2 Abbreviations .10
3.3 Symbols .11
4 Service definition .11
4.1 Packet mode services. 11
5 Network architecture .12
5.1 Support of multiple network layer protocols.12
5.2 Data transmission .12
5.3 AT functionality .13
5.3.1 Interworking function .13
5.3.2 Location registration procedure.13
5.3.3 Dynamic resource management .13
5.4 GSS functionality .13
5.4.1 Administrative aspects .14
5.4.1.1 Data call phases and activities .14
5.4.1.2 Collection of data for call charging .15
5.5 CIF functionality .15
5.5.1 Interworking with GSSs .16
5.5.2 TFTS packet messages conversion.16
5.5.3 Address conversion.16
6 End to end data flow.17
6.1 CALL management procedures.17
6.1.1 AT originated call establishment .17
6.1.2 CIF originated call establishment .17
6.1.3 Data transfer.18
6.1.4 Handover procedures.18
6.1.5 Call clearing procedures.18
6.2 Scenarios.18
7 AT to GSS interface aspects.18
7.1 General .18
7.2 Layer 2 aspects.19
7.3 AT location registration procedure.20
7.4 Data transfer services provided by signalling layer 3 on the AT side .20
7.4.1 General.20
7.4.2 Service states at the AT side of the AT-GSS interface .21
7.5 Data transfer services provided by signalling layer 3 on the GSS side .21
7.5.1 General.21
7.5.2 Service states at the GSS side of the AT-GSS interface .21
7.6 Dynamic resource management.22
7.6.1 General.22
7.6.2 Varying throughput transmission.22
7.6.2.1 Aircraft-originated throughput modification.22
7.6.2.2 Ground initiated throughput modification.23
7.6.3 Decision strategy.24
7.6.3.1 Throughput increase.24
7.6.3.2 Throughput decrease .25
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7.7 Elementary procedures for packet switched data transfer. 25
7.7.1 General . 25
7.7.2 DTM states . 25
7.7.2.1 Call states at the AT side of the interface (see figure C.1) . 25
7.7.2.2 Call states at the GSS side of the interface (see figure
C.2) . 25
7.7.2.3 Packet-switched DTM procedures. 26
7.7.3 Aircraft location management. 26
7.7.3.1 General . 26
7.7.3.2 Location registration. 26
7.7.3.2.1 General. 26
7.7.3.2.2 Connection request . 27
7.7.3.2.3 Connection confirmation . 27
7.7.3.2.4 Connection rejection . 27
7.7.3.2.5 Connection release . 27
7.7.3.3 Location update. 27
7.7.4 Aircraft originating call establishment procedures . 27
7.7.4.1 General . 27
7.7.4.2 Call request. 28
7.7.4.3 Call connected . 28
7.7.4.4 Call rejection . 28
7.7.5 Ground originating call establishment procedures . 28
7.7.5.1 General . 28
7.7.5.2 Call connected . 29
7.7.6 Call clearing . 29
7.7.6.1 Exception conditions . 29
7.7.6.2 Clearing initiated by the AT . 29
7.7.6.3 Clearing initiated by the GSS . 29
7.7.6.4 Completion of clearing . 30
7.7.6.5 Clear collision. 30
7.7.7 Miscellaneous procedures. 30
7.7.7.1 Data transfer air-to-ground. 30
7.7.7.2 Data transfer ground-to-air. 30
7.7.7.3 Timer expiry . 30
7.7.7.4 Handover. 30
7.7.7.4.1 AT side . 30
7.7.7.4.2 GSS side . 31
7.7.7.5 Resource management. 31
7.7.7.5.1 General. 31
7.7.7.5.2 Throughput increase . 31
7.7.7.5.3 Throughput decrease. 32
7.8 Handling of error conditions . 33
7.8.1 General treatment of error conditions. 33
7.8.2 Message type error. 33
7.8.3 Mandatory information element error. 33
7.9 Message functional definitions and contents . 34
7.9.1 DTM messages . 34
7.9.1.1 Connect. 34
7.9.1.2 Disconnect . 35
7.9.1.3 Packet data transfer (PD1) . 35
7.9.1.4 Packet data transfer (PD2) . 36
7.9.2 Supplementary RRM messages. 36
7.9.2.1 Throughput modification request . 36
7.9.2.2 Throughput modification command . 37
7.9.2.3 Throughput modification reject. 37
7.10 General message format and information elements coding . 37
7.10.1 Overview. 38
7.10.2 Protocol discriminator . 38
7.10.3 Transaction identifier . 38
7.10.4 Message type. 38
7.10.5 Supplementary RRM information elements. 39
7.10.5.1 Capacity request . 39
7.10.5.2 Slot allocation. 40
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7.10.6 DTM information elements.40
7.10.6.1 DTM-cause .40
7.10.6.2 Data information .41
7.11 List of system parameters. 41
7.11.1 Timers for data transfer on the AT side .41
7.11.2 Timers for data transfer on the GSS side.41
7.12 Definition of primitive parameters .42
7.12.1 Primitive parameters for DTM .42
7.12.2 Additional primitive parameters for the RR service .42
8 Interworking at the GSS .43
8.1 General .43
8.2 Relay function description.43
8.3 DTM states at the GSS side of the AT-GSS and GSS-CIF interfaces .43
9 GSS to CIF interface aspects.44
9.1 General .44
9.2 Data transfer services provided by signalling layer 3 on GSS side .44
9.2.1 General GSS .44
9.2.2 Service state diagram GSS.45
9.3 Data transfer services provided by signalling layer 3 on the CIF side .45
9.3.1 General.45
9.3.2 Service state diagram CIF.45
9.4 Elementary procedures for packet switched DT.46
9.4.1 Overview.46
9.4.1.1 General.46
9.4.2 DTM states.46
9.4.2.1 Call states at the GSS side of the interface.46
9.4.2.2 Call states at the CIF side of the interface.46
9.4.2.3 Packet-switched DTM procedures.47
9.4.3 GSS originating call establishment procedures.47
9.4.3.1 Call request.47
9.4.3.2 Call connected.47
9.4.4 CIF originating call establishment procedures .48
9.4.4.1 Call request.48
9.4.4.2 Call connected.48
9.4.5 Call clearing.48
9.4.5.1 Clearing initiated by the CIF.48
9.4.5.2 Clearing initiated by the GSS.49
9.4.5.3 Completion of clearing.49
9.4.6 Miscellaneous procedures.49
9.4.6.1 Data transfer GSS-to-CIF.49
9.4.6.2 Data transfer ground to air.49
9.4.6.3 Handover .49
9.4.6.3.1 GSS side.49
9.4.6.3.2 CIF side.50
9.5 Handling of error conditions.50
9.5.1 General treatment of error conditions .50
9.5.2 Message type error .50
9.5.3 Mandatory information element error .50
9.6 Message functional definitions and contents .51
9.6.1 X.25 layer 3 sublayer.51
9.6.2 Data transfer management sublayer.51
9.6.2.1 Message type .51
9.6.2.2 Packet data transfer (PD1).52
9.6.2.3 Packet data transfer (PD2).52
9.6.2.4 Connect .52
9.6.2.5 Disconnect.52
9.7 General message format and information elements coding.53
9.7.1 CIF indicator .53
9.7.2 DTM cause.53
9.7.3 Data information.54
9.8 List of system parameters.54
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9.8.1 Timers for data transfer on the GSS side. 54
9.8.2 Timers for data transfer on the CIF side. 54
9.9 Definition of primitive parameters. 55
Annex A (informative): Information on expected usage of data service. 56
A.1 Status update information. 56
A.2 File transfer. 56
A.3 Information update. 56
A.4 Interactive services. 56
Annex B (informative): Scenarios . 57
Annex C (informative): SDL of TFTS layer 3 DTM processes. 74
History. 125
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ETS 300 752: September 1997
Foreword
This European Telecommunication Standard (ETS) has been produced by the Radio Equipment and
Systems (RES) Technical Committee of the European Telecommunications Standards Institute (ETSI).
Transposition dates
Date of adoption: 5 September 1997
Date of latest announcement of this ETS (doa): 31 December 1997
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 30 June 1998
Date of withdrawal of any conflicting National Standard (dow): 30 June 1998
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ETS 300 752: September 1997
1 Scope
This European Telecommunication Standard (ETS) deals with the procedures allowing the technical
realization of packet mode data with the Terrestrial Flight Telecommunications System (TFTS)
environment using transparent network support according to the teleservice definitions contained in
ETS 300 326-1 [1].
The TFTS packet data transmission services build on the existing architecture defined in ETS 300 326 [1], [2]
and [3] introducing a new network function termed the Centralised Interworking Function (CIF). The selection
of a networking protocol, and its definition is outside the scope of this ETS. The use of a particular
protocol does not constrain the actual implementation of CIF functionality.
Transport layer aspects
In order to ensure the resolution of lost or duplicated packets arising from handover, it is assumed that the
higher layers implement an end to end acknowledgement function.
2 Normative references
This ETS incorporates by dated and undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications
apply to this ETS only when incorporated in it by amendment or revision. For undated references the latest
edition of the publication referred to applies.
[1] ETS 300 326-1: "Radio Equipment and Systems (RES); Terrestrial Flight
Telephone System (TFTS); Part 1: Speech services, facilities and
requirements".
[2] ETS 300 326-2 (1996): "Radio Equipment and Systems (RES); Terrestrial Flight
Telephone System (TFTS); Part 2: Speech services, radio interface".
[3] ETS 300 326-3: "Radio Equipment and Systems (RES); Terrestrial Flight
Telephone System (TFTS); Part 3: Speech services, network aspects".
[4] ITU-T Recommendation X.25: "Interface between Data Terminal Equipment
(DTE) and Data Circuit-terminating Equipment (DCE) for terminals operating in
the packet mode and connected to public data networks by dedicated circuit".
[5] ITU-T Recommendation X.121: "International numbering plan for public data
networks".
[6] ARINC Characteristic 746-4: "Cabin Communication Systems (CCS)".
[7] ISO 9577: "Information technology - Protocol identification in the network layer".
[8] ITU-T Recommendation Q.931: "Digital subscriber Signalling System No. 1
(DSS1) - ISDN user-network interface layer 3 specification for basic call control".
[9] Internet Architecture Board RFC 791: "Internet Protocol - DARPA Internet
Program protocol specification".
[10] Internet Architecture Board RFC 793: "Transmission Control Protocol - DARPA
Internet Program protocol specification".
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3 Abbreviations
3.1 Definitions
For the purposes of this ETS, the following definitions apply:
Ba channel: A channel which carries either:
- a 9,6 kbit/s bit stream with an error structure and transmission delay suitable to carry voice
encoded information; or
- a bit stream at a gross rate of 9,6 kbit/s with an error structure and transmission delay
adapted to a wider range of services.
La channel: A channel with a gross data rate of 2,4 kbit/s.
Ma channel: A channel with a gross data rate of 4,8 kbit/s.
PACKET DATA TRANSFER: The mechanism of transporting messages between the avionic termination
and the ground station system.
Ua interface: The interface between the Avionic Termination (AT) and the Ground Station System (GSS)
(ETS 300 326-2 [2]).
3.2 Abbreviations
For the purposes of this ETS, the following abbreviations apply:
ACARS Aircraft Communications, Addressing and Reporting System
AS Aircraft Station
AT Avionic Termination
ATEI Avionic Termination Equipment Identifier
BCCH(D) Broadcast Control CHannel (Data)
CC Call Control
CIF Centralised Interworking Function
CM Connection Management
CTU Cabin Telecommunication Unit
DCCH Dedicated Control CHannel
DT Data Transmission
DTM Data Transmission Management
DTM-SAP Data Transmission Management Service Access Point
FACCH Fast Associated Control CHannel (a case of a DCCH)
FCT Flow Control Threshold
GS Ground Station
GSC Ground Switching Centre
GSIC Ground Station Identity Code
GSS Ground Station System
IE Information Element
IEI Information Element Identifier
IPI Initial Protocol Identifier
MF Mandatory with Fixed length
MN-SAP Mobile Network Service Access Point
MV Mandatory with Variable length
OF Optional with Fixed length
OV Optional with Variable length
PSDN Packet Switched Data Network
RR Radio Resources
RRM Radio Resource Management
SACCH Slow Associated Control CHannel (a case of a DCCH)
SAP Service Access Point
SAPI Service Access Point Identifier
SDL System Description Language
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TCT Throughput Control Threshold
TE Terminal Equipment
TFTS Terrestrial Flight Telecommunications System
TI Transaction Identifier
VC Virtual Circuit
X.25 RNR X.25 [4] Receiver Not Ready message
X.25 RR X.25 [4] Receiver Ready message
3.3 Symbols
For the purposes of this ETS, the following symbols apply:
bps bits per second
clr clear
cnf confirm
conn connection
CONN CONNECT
DISC DISCONNECT
est establish
ind indication
kbit/s kilobits per second
PD Packet Data
pend pending
rel release
req request
resp response
trans transport
4 Service definition
This ETS specifies support for the following data types:
- packet transport on the TFTS radio interface.
The TFTS packet data transmission service allows an aircraft application to send and receive data in an
end-to-end, point-to-point, connection-oriented mode.
4.1 Packet mode services
The types of packet mode services supported by the TFTS packet transport service may include the
following:
- status update information;
- file transfer;
- information update;
- interactive services.
Annex A provides further information.
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5 Network architecture
The TFTS packet data transmission services builds on the existing architecture defined in ETS 300 326 [1],
[2] and [3] introducing a new network function termed the Centralised Interworking Function (CIF). This
function provides the interworking between the transport mode used between the Avionic Termination (AT)
and the Ground Station System (GSS), and that used in the public data network. The interface between the
AT and the GSS for the TFTS packet data transmission is defined in clause
...
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