SIST ETS 300 326-3 E1:2003

SLOVENSKI STANDARD
SIST ETS 300 326-3 E1:2003
01-december-2003
Radijska oprema in sistemi (RES) – Prizemni letalski telefonski sistem (TFTS) – 3.
del: Govorne storitve, omrežni vidiki
Radio Equipment and Systems (RES); Terrestrial Flight Telecommunications System
(TFTS); Part 3: Speech services, network aspects
Ta slovenski standard je istoveten z: ETS 300 326-3 Edition 1
ICS:
33.060.01 Radijske komunikacije na Radiocommunications in
splošno general
49.090 2SUHPDLQLQVWUXPHQWLY On-board equipment and
]UDþQLKLQYHVROMVNLKSORYLOLK instruments
SIST ETS 300 326-3 E1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 326-3 E1:2003

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SIST ETS 300 326-3 E1:2003
EUROPEAN ETS 300 326-3
TELECOMMUNICATION January 1996
STANDARD
Source: ETSI TC-RES Reference: DE/RES-5-01/13
ICS: 33.060.50
TFTS, network aspects
Key words:
Radio Equipment and Systems (RES);
Terrestrial Flight Telephone System (TFTS);
Part 3: Speech services, network aspects
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - secretariat@etsi.fr
X.400: Internet:
Tel.: +33 92 94 42 00 - Fax: +33 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 1996. All rights reserved.
New presentation - see History box

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ETS 300 326-3: January 1996
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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Contents
Foreword .9
1 Scope .11
2 Normative references.11
3 Definitions and abbreviations .12
3.1 Definitions .12
3.2 Abbreviations .12
4 TFTS network architecture.13
4.1 General .13
4.2 The functional entities of the TFTS.13
4.2.1 The Ground Station System (GSS).13
4.2.2 The GSC .14
4.2.3 The GS.14
4.2.4 The Interworking Function (IWF) .14
4.2.5 The AS .14
4.3 Configuration of the TFTS network.14
4.3.1 General.14
4.3.2 Description of the TFTS configuration.15
4.4 TFTS network interfaces.16
4.4.1 General.16
4.4.2 Interface between the GSC and GSs (Ub).16
4.4.3 Interface between AS and GS system (Ua) .16
4.5 Interfaces with the fixed networks.16
4.5.1 Interface between the GSC and the fixed networks.16
4.5.2 Scope of TFTS specification .16
4.6 Interfaces between AC, OMC and NMC, and the fixed networks.17
4.7 Network connection types.17
4.7.1 Introduction.17
4.7.2 General considerations .17
4.7.2.1 Relationship between lower layer capabilities and radio
traffic channels .17
4.7.2.2 Lower layer capabilities.17
4.7.3 Framework for the description of connection types.17
4.7.3.1 Introduction.17
4.7.3.2 Purpose of TFTS connection types .18
4.7.3.3 Functions associated with TFTS connection.18
4.7.3.4 Applications of TFTS connection types .19
4.7.4 TFTS connection types .19
4.7.4.1 Description of TFTS connection types.19
4.7.4.2 TFTS connection elements.20
4.7.4.3 Rules of association for the attribute values of connection
elements and connection types .20
4.7.4.3.1 Information transfer mode .20
4.7.4.3.2 Information transfer rate (kbits/s).20
4.7.4.3.3 Information transfer susceptance .20
4.7.4.3.4 Establishment of connection.20
4.7.4.3.5 Symmetry.21
4.7.4.3.6 Connection configuration .21
4.7.4.3.7 Structure .21
4.7.4.3.8 Channels.21
4.7.4.3.8.1 Information channel (rate).21
4.7.4.3.8.2 Signalling channel (rate) .21
4.7.4.3.9 Connection control protocol .21
4.7.4.3.10 Information transfer coding/protocol .21

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4.7.4.3.11 Further attributes and attribute values . 22
4.7.4.4 Limited set of TFTS connection types. 22
4.7.5 Relationship between bearer and connection types . 23
4.7.6 List of definitions of TFTS connection type attributes and their values . 24
4.7.6.1 Attribute definition and their values. 24
4.7.6.2 Definition of values. 25
5 Fixed network interworking. 25
5.1 Interworking requirements. 25
5.1.1 Interworking definition. 25
5.1.2 Interworking between networks . 25
5.1.2.1 Network interworking . 25
5.1.2.2 Service interworking. 26
5.2 Network interworking traffic part. 26
5.2.1 General . 26
5.2.2 Definitions . 26
5.2.3 Traffic part introduction. 27
5.2.4 Network characteristics . 27
5.2.4.1 Key characteristics of networks concerned. 27
5.2.4.2 Characteristics of PSTNs. 27
5.2.4.3 Interworking classification . 28
5.2.4.3.1 Network interworking. 28
5.2.4.3.2 Signalling interworking . 28
5.2.4.3.3 Numbering. 28
5.2.5 Interworking to the PSTN/ISDN. 29
5.2.5.1 Interworking indications to TFTS terminals. 29
5.2.5.2 Transmission aspects . 29
5.3 Interworking to the ISDN . 29
6 Call handling and handover procedures. 30
6.1 General. 30
6.2 Handover criteria and resource allocation management. 30
6.2.1 General . 30
6.2.2 General handover decisions. 30
6.2.2.1 AS need for handover . 30
6.2.2.2 GS need for handover. 30
6.2.2.3 Handover decision point priority. 31
6.2.3 Handover strategy to be applied at AS . 31
6.2.4 Handover strategy to be applied at AS for cell boundary selection . 31
6.2.5 Alternative handover strategy to be applied at AS for cell boundary
selection. 31
6.2.6 Conflict in signalling requirements. 31
6.2.7 Resource management strategy to be applied at the GS. 32
6.2.7.1 General requirements on GS resource management. 32
6.2.8 Handover failure actions due to lack of resources. 33
6.2.8.1 Handover failure action at the GS side due to lack of
resources . 33
6.2.8.2 AS action on handover failure due to resource shortage. 33
6.2.8.2.1 Handover initiated due to poor link quality . 33
6.2.8.2.2 Handover initiated due to cell boundary. 33
6.2.8.2.3 Handover initiated due to physical condition. 33
6.2.9 General handover and cell selection issues . 34
6.3 Call handling and handover management procedures . 34
6.3.1 General . 34
6.3.2 Call handling procedures . 34
6.3.2.1 General aspects. 34
6.3.2.2 Functional aspects for call handling. 35
6.3.2.2.1 AS functional entities. 35
6.3.2.2.2 GS functional entities . 36
6.3.2.2.3 GSC functional entities. 36
6.3.2.3 Call handling phases. 36
6.3.2.3.1 Resource set-up phase. 37
6.3.2.3.2 Call set-up phase . 38

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6.3.2.3.3 Conversation phase.38
6.3.2.3.4 Call release phase .38
6.3.2.3.5 Resource Release phase .39
6.3.3 Handover procedures.39
6.3.3.1 Handover decision.39
6.3.3.1.1 Reasons for handover .39
6.3.3.1.1.1 Reason for handover initiation on the
AS side.39
6.3.3.1.1.2 Reason for handover initiation on the
GS side .39
6.3.3.1.2 Strategy for Handover.40
6.3.3.2 Handover management.40
6.3.3.2.1 Resource management .40
6.3.3.2.2 Handover phase organisation.40
6.3.3.2.2.1 Negotiation phase.40
6.3.3.2.2.2 Execution phase .40
6.3.3.2.2.3 Completion phase.41
6.3.3.2.3 Failure procedures.41
6.3.3.3 Functional composition of TFTS stations .41
6.3.3.3.1 AS functional composition for
handover.42
6.3.3.3.2 GS functional composition for
handover.43
6.3.3.3.2.1 Functional composition for handover
between carriers of a GS .43
6.3.3.3.2.2 Functional composition for a previous
GS in handover between different
GSs.44
6.3.3.3.2.3 Functional composition for a new GS
in handover between different GSs. .45
6.3.3.3.3 GSC functional composition for
handover.45
6.3.3.3.3.1 GSC Signalling functions for handover between GSs of
the same GSC .47
6.3.3.3.3.2 Signalling functions for a GSC requesting handover.48
6.3.3.3.3.3 Signalling functions for a handover requested GSC.49
6.3.3.4 Handover general description.50
6.3.3.4.1 Handover between channels of the GS.50
6.3.3.4.1.1 General description of handover between channels of the
GS.50
6.3.3.4.1.2 Description of handover between channels of the GS .51
6.3.3.4.1.3 Handover between GSs of the same GSC.52
6.3.3.4.1.4 Description of handover between GSs of the same GSC .53
6.3.3.4.2 Handover between GSs of different GSC.55
6.3.3.4.2.1 General description of handover
between GSs of different GSC .55
6.3.3.4.2.2 Description for handover between
GSs of different GSC.56
6.4 Network interworking handover part .58
6.4.1 General.58
6.4.2 TFTS/PSPDN interworking requirements .58
6.4.3 TFTS/ISDN interworking requirements .59
6.4.4 TFTS/PSTN interworking requirements .59
6.5 Handover part specification .59
6.5.1 Introduction.59
6.5.2 Interface presentation.59
6.5.2.1 General.59
6.5.2.2 Objectives.60
6.5.2.3 General characteristics.61
6.5.2.3.1 Technique of description.61
6.5.2.3.2 Primitives .61
6.5.2.3.3 Peer-to-peer communication .61
6.5.3 Structure of signalling functions .61

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6.5.3.1 Basic groups of functions. 61
6.5.3.2 Protocol architecture . 61
6.5.4 Services provided by handover signalling layer. 63
6.5.4.1 CC services. 63
6.5.4.2 MRM services . 63
6.5.4.3 HRM services. 63
6.5.5 Services assumed from network layer. 63
6.5.5.1 General . 63
6.5.5.2 Service primitives. 64
6.5.6 Inter-layer service interfaces. 64
6.5.6.1 Services provided by HRM entity . 64
6.5.6.1.1 General. 64
6.5.6.1.2 Service primitives . 65
6.5.7 Functions to be provided by the handover layer entities. 66
6.5.7.1 Functions provided by the HRM entity . 66
6.5.7.2 Functions provided by the CCM entity . 67
6.5.7.3 Function provided by the RF . 67
6.5.7.4 Functions provided by the Distribution Function (DF). 67
6.5.7.5 Functions provided by the MRM entity. 67
6.5.8 Elementary procedures for HRM . 67
6.5.8.1 General . 67
6.5.8.2 Transport CM . 67
6.5.8.3 HRM. 68
6.5.8.4 Handover processing . 68
6.5.8.4.1 Outgoing handover procedure . 68
6.5.8.4.2 Incoming handover procedure . 69
6.5.8.5 Handover information transmission . 69
6.5.8.6 TCH release. 69
6.5.8.7 Data message transmission . 70
6.5.9 Message functional definition and contents. 70
6.5.9.1 Messages for HRM . 71
6.5.9.2 Handover resource messages. 71
6.5.9.2.1 TCH release. 71
6.5.9.2.2 Release Confirm . 72
6.5.9.3 Handover messages between GSCs. 72
6.5.9.3.1 HO-Request . 72
6.5.9.3.2 HO-Confirm. 72
6.5.9.3.3 HO-Command. 73
6.5.9.3.4 HO-Complete . 73
6.5.9.3.5 HO-Reject . 74
6.5.9.3.6 HO-Failure. 74
6.5.9.3.7 HO-Information. 74
6.5.9.4 Miscellaneous messages. 75
6.5.9.4.1 Connect. 75
6.5.9.4.2 Disconnect . 75
6.5.9.4.3 CCM message transfer . 75
6.5.9.4.4 MRM message transfer. 76
6.5.9.5 Messages for MRM. 76
6.5.10 Message format and information element coding . 76
6.5.10.1 Overview . 76
6.5.10.2 Message type. 77
6.5.10.3 Other information elements. 77
6.5.10.3.1 HRM information elements. 81
6.5.10.3.2 Handover procedure reference . 81
6.5.10.3.3 GS Identifier . 82
6.5.10.3.4 ATEI . 82
6.5.10.3.5 Handover resource identifier . 83
6.5.10.3.6 Handover resource description . 83
6.5.10.3.7 Handover call number . 84
6.5.10.3.8 Handover resource identifier list. 85
6.5.10.3.9 Handover characteristics. 86
6.5.10.3.10 Allocated frequency. 86
6.5.10.3.11 Allocated slots . 87

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6.5.10.3.12 HRM Cause .87
6.5.10.3.13 CCM data message.88
6.5.10.3.14 MRM data message.89
6.5.11 Handling of error conditions .89
6.5.11.1 Transport disconnect.89
6.5.11.2 Release resource already released.89
6.5.11.3 Unknown handover resource identifier .89
6.5.11.4 Unknown handover reference .89
6.5.12 Handover diagrams.90
6.5.12.1 Handover scenario diagrams.90
6.5.12.1.1 Normal case.90
6.5.12.1.2 Reject by Old-GSC .90
6.5.12.1.3 Reject by New-GSC.91
6.5.12.1.4 Reject by the New-GS .91
6.5.12.1.5 Reject by the New-GSC after HO-
CONFIRM .91
6.5.12.1.6 Failure by the AS .92
6.5.12.2 State diagram and System Description Language (SDL)
of HRM.93
6.6 GSC - GSC isolation and restoration.102
6.6.1 General.102
6.6.2 Isolation .102
6.6.3 Handover resource states .102
6.6.3.1 Handover resource dynamic states .102
6.6.3.2 Handover resource usage states.102
6.6.4 Restart procedure.103
6.6.4.1 General restart procedure .103
6.6.4.2 Handover resource dynamic state diagram.104
6.6.5 Handover Resource Maintenance.104
6.6.5.1 Handover resource usage state modification procedure.104
6.6.5.2 Handover resource usage state diagram .105
6.6.6 Messages functional definition and contents.105
6.6.6.1 Restart message .105
6.6.6.2 Restart acknowledge message .106
6.6.6.3 Service message .106
6.6.6.4 Service acknowledge message.106
6.6.7 Message format and information element coding .106
6.6.7.1 General message format.107
6.6.7.2 Message type .107
6.6.7.3 Other information elements .108
6.6.7.4 MRM transaction reference .108
6.6.7.5 Handover resource identity and state.109
History.110

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ETS 300 326-3: January 1996
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).
This ETS has been split into three parts as follows:
Part 1: "Speech services, facilities and requirements";
Part 2: "Speech services, radio interface";
Part 3: "Speech services, network aspects".
Proposed transposition dates
Date of adoption of this ETS: 26 May 1995
Date of latest announcement of this ETS (doa): 30 April 1996
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 31 October 1996
Date of withdrawal of any conflicting National Standard (dow): 31 October 1996

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ETS 300 326-3: January 1996
1 Scope
This European Telecommunications Standard (ETS) covers the specification of equipment for provision of
a terrestrial Aeronautical Public Correspondence (APC) service working in the frequency spectrum bands
allocated at World Administrative Radio Conference (WARC) 92 (1 670 to 1 675 MHz and 1 800 to 1 805
MHz). The ETS fully specifies aspects of the radio interface and Terrestrial Flight Telecommunication
System (TFTS) Ground Network (GN) required to maintain interoperability of equipment. Within Europe
European Radiocommunications Committee (ERC) Decision ERC/DEC (92)01 [13] is applicable to TFTS
frequency spectrum.
The general architecture of the TFTS is considered in ETS 300 326-1 [1]. This part expands on that
explanation to consider aspects of fixed network interworking. This part does not specify any specific
signalling system for that purpose. It only specifies the functionality required for correct operation of the
system.
Call handling and decision processes are specified. These should be used in conjunction with ETS 300
326-2 [2]. These explanations include the decision processes for the handover function.
Signalling requirement between Ground Switching Centres (GSCs) are specified for supporting inter-GSC
handovers.
The TFTS Aircraft Station (AS) was specified by the European Airlines Electronics Committee (EAEC) and
has subsequently been adopted as Aeronautical Public Correspondence (ARINC) Characteristic 752 [14]
by the Airlines Electrical Engineering Committee (AEEC). ARINC Characteristic 752 [14] makes reference
to this ETS for specification of certain radio and telecommunication matters to avoid ambiguity. The TFTS
AS is one of a set of facilities
...