ETSI TS 103 269-2 V1.2.1 (2017-06)

ETSI TS 103 269-2 V1.2.1 (2017-06)






TECHNICAL SPECIFICATION
TETRA and Critical Communications Evolution (TCCE);
Critical Communications Architecture;
Part 2: Critical Communications application
mobile to network interface architecture

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2 ETSI TS 103 269-2 V1.2.1 (2017-06)



Reference
RTS/TCCE-04191
Keywords
broadband, radio, security, TETRA
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3 ETSI TS 103 269-2 V1.2.1 (2017-06)
Contents
Intellectual Property Rights . 8
Foreword . 8
Modal verbs terminology . 8
1 Scope . 9
2 References . 9
2.1 Normative references . 9
2.2 Informative references . 10
3 Definitions and abbreviations . 11
3.1 Definitions . 11
3.2 Abbreviations . 13
4 Architecture overview . 15
4.1 Architecture reference . 15
4.2 Configurations . 16
4.2.0 Functional Architecture . 16
4.2.1 Single CCA system . 17
4.2.2 Multi-CCAS system . 18
4.2.3 Interconnection with legacy . 19
5 Components . 19
5.0 Functional groups . 19
5.1 Mobile unit . 19
5.2 Access sub-systems . 19
5.3 Critical Communication Application. 19
5.3.0 General . 19
5.3.1 Access interfaces . 20
5.3.1.0 General . 20
5.3.1.1 Application control interface . 20
5.3.1.2 Media unicast interface . 21
5.3.1.3 Media multicast interface . 21
5.3.1.4 Unicast bearer control interface . 21
5.3.1.5 Multicast bearer control interface . 21
5.4 CCAS functional entities . 22
5.4.0 General . 22
5.4.1 SIP application server . 22
5.4.2 Mobility management . 22
5.4.3 Group management . 22
5.4.4 Resource management . 22
5.4.5 Control server . 23
5.4.6 Media distribution . 23
5.4.7 Security . 23
5.4.8 Identity management. 23
6 Reference points, identities and protocols . 23
6.0 Reference points . 23
6.1 Identities and protocols . 24
6.1.0 CCA User identities . 24
6.1.1 CCA application identities . 25
6.1.2 Transport protocols . 26
6.1.2.0 Protocol layers . 26
6.1.2.1 Unicast transport . 27
6.1.2.2 Multicast transport . 27
6.1.2.3 Control of unicast/broadcast transport over LTE . 27
6.1.3 Network layer protocols . 28
6.1.4 Application layer protocols . 28
6.1.4.0 Keep alive . 28
ETSI

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4 ETSI TS 103 269-2 V1.2.1 (2017-06)
6.1.4.1 Pseudo-broadcast protocol . 28
6.1.4.2 Group information exchange . 28
6.1.4.3 Priority information requests . 28
6.1.4.4 Profile and CCA service parameter management . 29
6.2 Standardized application codecs . 29
6.2.1 Voice Codec. 29
6.2.2 Video Codec . 29
7 Overview of services . 29
7.0 Introduction . 29
7.1 CCA system access . 29
7.2 Service registration . 30
7.2.0 Initial authentication procedure . 30
7.2.0.1 General . 30
7.2.0.2 Authentication . 32
7.2.1 Home network registration . 33
7.2.2 Migration registration . 34
7.2.3 SIP registration and access procedure . 35
7.2.3.1 General . 35
7.2.3.2 Preparation for SIP registration - the access procedure . 35
7.2.3.3 SIP registration of the CCA client . 38
7.2.3.4 SIP registration of users . 38
7.2.3.5 Identities used for SIP registration . 39
7.2.3.6 Device class and device capabilities . 39
7.2.3.7 Subscription to event services . 39
7.2.3.8 Service parameters, profiles and security parameters . 40
7.2.3.9 Group affiliations and media paths . 41
7.2.4 Periodic update . 41
7.2.5 Deregistration . 42
7.2.6 Remote deregistration . 42
7.3 Individual streaming communication . 42
7.3.0 General . 42
7.3.0.1 The individual communication process . 42
7.3.0.2 Media control protocol for individual calls . 43
7.3.0.3 Individual call states . 44
7.3.1 Individual unit to unit call with on/off hook signalling . 45
7.3.2 Individual unit to unit call with direct signalling . 46
7.3.3 Individual unit to telephony call (outgoing call) . 47
7.3.4 Individual unit to telephony call (incoming call) . 49
7.4 Group streaming communication . 51
7.4.0 General . 51
7.4.0.1 The Group communication process . 51
7.4.0.2 Media control protocol for group calls . 52
7.4.0.3 Group call states . 53
7.4.0.4 E-MBMS use. 54
7.4.1 Broadcast and system call . 54
7.4.2 Group communication coverage . 55
7.4.3 Group provisioning . 55
7.4.4 Group affiliation, mobility and selection . 56
7.4.4.0 Group affiliation . 56
7.4.4.1 Relation between group affiliation and mobility . 57
7.4.4a Group selection . 57
7.4.5 Session join and call start . 57
7.4.6 Late entry . 58
7.4.7 Message exchanges related to group call . 58
7.4.7.1 Group subscription and affiliation . 58
7.4.7.2 Joining a session . 59
7.4.7.3 Non-acknowledged group communication . 60
7.4.7.3.0 Call setup sequence for group communication . 60
7.4.7.3.1 Group call combined with session join . 60
7.4.7.3.2 Group call in pre-joined session . 64
7.4.7.4 Acknowledged or ringing group communication . 65
ETSI

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5 ETSI TS 103 269-2 V1.2.1 (2017-06)
7.4.7.5 Bearer control . 67
7.4.8 Conversion of an ongoing group call into an emergency group call . 67
7.5 Push-to-talk management procedures . 67
7.5.0 General . 67
7.5.1 Initial allocation of right to transmit . 67
7.5.2 Releasing the right to transmit . 67
7.5.3 Requesting the right to transmit . 68
7.5.4 Interrupting a granted transmission. 68
7.5.5 Suspending a transmission . 70
7.5.6 End of call . 71
7.6 Call modification . 71
7.7 Management of priority and pre-emption . 72
7.7.0 General . 72
7.7.1 Provisioned priority . 72
7.7.2 Setup priority . 72
7.7.3 Push-to-talk priority . 73
7.7.4 Scanning priority . 73
7.7.5 Resource allocation priority and resource retention . 73
7.7.6 Priority attributes requests . 73
7.8 Status and messaging. 73
7.8.0 Supported status and messaging types . 73
7.8.1 Standard defined status . 74
7.8.1.0 Pre-defined status . 74
7.8.1.1 Emergency status . 74
7.8.1.2 Call alert . 74
7.8.1.3 Urgent call back . 74
7.8.1.4 Ambience listening call request . 74
7.8.1.5 Ambience listening urgent call request . 75
7.8.1.6 Scanning on and off . 75
7.8.1.7 Transmit inhibit on and off . 75
7.8.1.8 Imminent peril status . 75
7.8.2 Messaging . 75
7.8.2.0 Message service . 75
7.8.2.1 Message broadcast . 76
7.9 Presence . 76
7.10 Localization and geographic information . 76
7.10.0 General . 76
7.10.1 Mode of transmission. 77
7.10.2 Assisted location . 78
7.11 Supplementary services . 78
7.11.0 Introduction. 78
7.11.1 Ambience Listening . 78
7.11.2 Talking party and calling party identity . 78
7.11.3 Dynamic group number allocation and group merging . 79
7.11.4 Disabling and enabling . 79
7.11.5 Call forwarding . 80
7.11.5.0 Call redirection . 80
7.11.5.1 Call forwarding unconditional . 80
7.11.5.2 Call forwarding on busy subscriber and on no reply . 80
7.11.6 Call barring . 80
7.11.6.0 Introduction . 80
7.11.6.1 Barring of outgoing calls . 80
7.11.6.2 Barring of incoming calls . 81
7.11.7 Call waiting and call hold . 81
7.11.8 Discreet listening . 81
7.11.9 Call transfer . 81
7.11.10 Area restr
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