ETSI TS 123 179 V13.5.0 (2017-03)

LTE; Functional architecture and information flows to support mission critical communication services; Stage 2 (3GPP TS 23.179 version 13.5.0 Release 13)

RTS/TSGS-0623179vd50

General Information

• Status: Published
• Publication Date: 26-Mar-2017
• Technical Committee: 3GPP SA 6 - Mission-critical applications
• Current Stage: 12 - Completion
• Completion Date: 27-Mar-2017

Standards Content (Sample)

ETSI TS 123 179 V13.5.0 (2017-03)






TECHNICAL SPECIFICATION
LTE;
Functional architecture and information flows to support
mission critical communication services;
Stage 2
(3GPP TS 23.179 version 13.5.0 Release 13)

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3GPP TS 23.179 version 13.5.0 Release 13 1 ETSI TS 123 179 V13.5.0 (2017-03)



Reference
RTS/TSGS-0623179vd50
Keywords
LTE
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3GPP TS 23.179 version 13.5.0 Release 13 2 ETSI TS 123 179 V13.5.0 (2017-03)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
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Foreword
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Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
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"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI

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3GPP TS 23.179 version 13.5.0 Release 13 3 ETSI TS 123 179 V13.5.0 (2017-03)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 12
1 Scope . 13
2 References . 13
3 Definitions, symbols and abbreviations . 14
3.1 Definitions . 14
3.2 Symbols . 15
3.3 Abbreviations . 15
4 Introduction . 16
5 Assumptions and architectural requirements . 17
5.1 Assumptions . 17
5.1.1 Service continuity . 17
5.1.2 Trust domain . 17
5.2 Architectural requirements . 17
5.2.1 General architectural requirements . 17
5.2.2 Roaming requirements . 17
5.2.3 Media routing requirements . 18
5.2.4 Requirements for user identity management . 18
5.2.5 Group affiliation and de-affiliation . 18
5.2.6 MCPTT call requirements . 18
5.2.6.1 General . 18
5.2.6.2 Group call requirements . 18
5.2.7 GCS AS requirements for the MCPTT service . 19
5.2.8 UE-to-network relay MCPTT service requirements . 19
5.2.9 Bearer management . 19
5.2.9.1 General . 19
5.2.9.2 EPS bearer considerations . 20
5.2.9.2.1 Considerations for the EPS bearer to the MCPTT service PDN. 20
5.2.9.2.2 Considerations for the EPS bearer to the MC common core services PDN and MC identity
management service PDN . 20
5.2.9.3 EPS unicast bearer considerations for MCPTT . 20
5.2.9.4 MBMS bearer management . 21
5.2.10 MCPTT system interconnect requirements . 21
5.2.11 MCPTT user profile requirements . 21
6 Involved business relationships . 22
7 Functional model . 24
7.1 General . 24
7.2 Description of the planes . 24
7.3 Functional model description . 24
7.3.1 On-network functional model . 24
7.3.2 Off-network functional model . 27
7.4 Functional entities description . 28
7.4.1 General . 28
7.4.2 Application plane . 28
7.4.2.1 General . 28
7.4.2.2 Common services core . 28
7.4.2.2.1 Configuration management client. 28
7.4.2.2.2 Configuration management server . 28
7.4.2.2.3 Group management client . 29
7.4.2.2.4 Group management server . 29
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3GPP TS 23.179 version 13.5.0 Release 13 4 ETSI TS 123 179 V13.5.0 (2017-03)
7.4.2.2.5 Identity management client . 29
7.4.2.2.6 Identity management server . 29
7.4.2.2.7 Key management client . 29
7.4.2.2.8 Key management server . 29
7.4.2.3 MCPTT application service . 29
7.4.2.3.1 MCPTT client . 29
7.4.2.3.2 MCPTT server . 30
7.4.2.3.3 Floor participant . 31
7.4.2.3.4 Floor control server . 31
7.4.2.3.5 Media distribution function . 31
7.4.2.3.6 Media mixer . 31
7.4.2.3.7 MCPTT user database . 31
7.4.3 Signalling control plane . 31
7.4.3.1 SIP entities . 31
7.4.3.1.1 Signalling user agent . 31
7.4.3.1.2 SIP AS . 32
7.4.3.1.3 SIP core . 32
7.4.3.1.3.1 General . 32
7.4.3.1.3.2 Local inbound / outbound proxy . 32
7.4.3.1.3.3 Registrar finder . 32
7.4.3.1.3.4 Registrar / application service selection . 33
7.4.3.2 SIP database . 33
7.4.3.2.1 General . 33
7.4.3.2.2 SIP database logical functions . 34
7.4.3.3 HTTP entities . 34
7.4.3.3.1 HTTP client . 34
7.4.3.3.2 HTTP proxy . 35
7.4.3.3.3 HTTP server . 35
7.5 Reference points . 35
7.5.1 General reference point principle . 35
7.5.2 Application plane . 35
7.5.2.1 General . 35
7.5.2.2 Reference point MCPTT-1 (between the MCPTT client and the MCPTT server). 35
7.5.2.3 Reference point MCPTT-2 (between the MCPTT server and the MCPTT user database) . 36
7.5.2.4 Reference point MCPTT-3 (between the MCPTT server and the MCPTT server) . 36
7.5.2.5 Reference point MCPTT-4 (unicast between the floor control server and the floor participant) . 36
7.5.2.6 Reference point MCPTT-5 (between the media distribution function and the EPS) . 36
7.5.2.7 Reference point MCPTT-6 (between the MCPTT server and the EPS) . 36
7.5.2.8 Reference point MCPTT-7 (unicast between the media distribution function and the media
mixer) . 36
7.5.2.9 Reference point MCPTT-8 (multicast between the media distribution function and the media
mixer) . 37
7.5.2.10 Reference point MCPTT-9 (multicast between the floor control server and the floor participant) . 37
7.5.2.11 Reference point CSC-1 (between the identity management client and the identity management
server) . 37
7.5.2.12 Reference point CSC-2 (between the group management client and the group management server
for configuration while UE is on-network) . 37
7.5.2.13 Reference point CSC-3 (between the MCPTT server and the group management server) . 37
7.5.2.14 Reference point CSC-4 (between the configuration management client and the configuration
management server for configuration while UE is on-network) . 37
7.5.2.15 Reference point CSC-5 (between the MCPTT server and the configuration management server) . 38
7.5.2.16 Void. 38
7.5.2.17 Reference point CSC-7 (between the group management servers) . 38
7.5.2.18 Reference point CSC-8 (between the key management server and the key management client) . 38
7.5.2.19 Reference point CSC-9 (between the key management server and the MCPTT server) . 38
7.5.2.20 Reference point CSC-10 (between the key management server and the group management
server) . 38
7.5.2.21 Reference point CSC-11 (between the configuration management client and the configuration
management server for configuration while UE is off-network). 39
7.5.2.22 Reference point CSC-12 (between the group management client and the group management
server for configuration while UE is off-network) . 39
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3GPP TS 23.179 version 13.5.0 Release 13 5 ETSI TS 123 179 V13.5.0 (2017-03)
7.5.2.23 Reference point CSC-13 (between the configuration management server and the MCPTT user
database) . 39
7.5.2.24 Reference point IWF-1 (between the MCPTT server and the interworking function to legacy
s yste ms) . 39
7.5.3 Signalling control plane . 39
7.5.3.1 General . 39
7.5.3.2 Reference point SIP-1(between the signalling user agent and the SIP core) . 39
7.5.3.3 Reference point SIP-2 (between the SIP core and the SIP AS) . 40
7.5.3.4 Reference point SIP-3 (between the SIP core and SIP core) . 40
7.5.3.5 Reference point HTTP-1 (between the HTTP client and the HTTP proxy) . 40
7.5.3.6 Reference point HTTP-2 (between the HTTP proxy and the HTTP server) . 40
7.5.3.7 Reference point HTTP-3 (between the HTTP proxy and HTTP proxy) . 40
7.5.3.8 Reference point AAA-1 (between the SIP database and the SIP core) . 40
8 Identities . 41
8.1 Application plane . 41
8.1.1 Mission Critical user identity (MC ID) . 41
8.1.2 MCPTT user identity (MCPTT ID) . 41
8.1.3 MCPTT group identity (MCPTT group ID) . 41
8.1.3.1 General . 41
8.1.3.2 MCPTT group ID management (off-network operation) . 42
8.2 SIP signalling control plane. 42
8.3 Relationship between identities in different planes . 43
8.3.1 Relationship between MCPTT ID and public user identity . 43
8.3.2 Relationship between MCPTT group ID and public service identity . 43
9 Application of functional model to deployments . 44
9.1 General . 44
9.2 Architecture model and deployment scenarios for on-network operations . 44
9.2.1 On-network architectural model . 44
9.2.1.1 On-network architectural model diagram . 44
9.2.1.2 Application services layer . 45
9.2.1.2.1 Overview . 45
9.2.1.2.2 Common services core . 45
9.2.1.2.3 MCPTT application service . 45
9.2.1.3 SIP core . 45
9.2.1.4 EPS . 45
9.2.1.5 UE 1 . 45
9.2.1.6 UE 2 . 45
9.2.2 Deployment scenarios . 46
9.2.2.1 Administration of MCPTT application service, SIP core and EPS . 46
9.2.2.1.1 General . 46
9.2.2.1.2 Common administration of all planes . 46
9.2.2.1.3 MCPTT service provider separate from SIP core and EPS . 47
9.2.2.1.4 MCPTT service provider administers SIP core, separate from EPS . 47
9.2.2.1.5 SIP core partially administered by both PLMN operator and MCPTT service provider . 48
9.2.2.1.6 PLMN operator administers SIP core with SIP identities administered by MCPTT service
provider . 49
9.2.2.2 MCPTT user database, SIP database and HSS . 49
9.2.2.3 Control of bearers by SIP core and MCPTT server . 52
9.2.2.3.1 General . 52
9.2.2.3.2 Control of bearers by SIP core . 52
9.2.2.3.3 Control of bearers by MCPTT server . 53
9.3 Architecture model for off-network operations . 53
9.3.1 Off-network architectural model diagram . 53
9.3.2 UE 3 . 54
9.3.3 UE 4 . 54
9.3.4 Off-line common services server . 54
9.4 Architecture model for roaming . 55
10 Procedures and information flows . 55
10.1 MCPTT configuration . 55
10.1.1 General .
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