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TS 23.379 (SA6)
Functional architecture and information flows
to support Mission Critical Push To Talk (MCPTT)

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for a better overview, the Table of Contents (ToC) is reproduced
V17.0.0 (Wzip)2019/09  248 p.
V16.4.0 (Wzip)2019/09  244 p.
V15.6.0 (PDF)  2019/06  202 p.
V14.7.0  2018/09  184 p.

3GPP 23.379 - Functional model for application plane of MCPTT service

Rapporteur:  Mr. Lazara, Dominic

This document specifies the functional architecture, procedures and information flows needed to support the mission critical push to talk (MCPTT) service. The MCPTT service utilizes the common functional architecture to support MC services over LTE including the common services core defined in TS 23.280. Support for both MCPTT group calls and MCPTT private calls operating in on-network and off-network modes of operation is specified.
The corresponding service requirements are defined in TS 22.179 and TS 22.280.
The present document is applicable primarily to MCPTT voice service using E-UTRAN access based on the EPC architecture defined in TS 23.401. Certain application functions of the MCPTT service such as dispatch and administrative functions could also be supported via non-3GPP access networks but no additional functionality is specified to support non-3GPP access.
The MCPTT service requires preferential handling compared to normal telecommunication services e.g. in support of police or fire brigade including the handling of prioritised MCPTT calls for emergency and imminent threats.
The MCPTT service can be used for public safety applications and also for general commercial applications e.g. utility companies and railways.
In the present document, MCPTT calls between MCPTT users on different MCPTT systems are considered.

short Table of Contents for  TS 23.379  Word version:   17.0.0

each title links to the equivalent title in the full ToC

 

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1  ScopeWord-p. 12
2  ReferencesWord-p. 12
3  Definitions, symbols and abbreviationsWord-p. 13
4  IntroductionWord-p. 16
5  Architectural requirementsWord-p. 16
6  Involved business relationshipsWord-p. 18
7  Functional modelWord-p. 18
7.1  GeneralWord-p. 18
7.2  Description of the planesWord-p. 19
7.3  Functional model descriptionWord-p. 19
7.4  Functional entities descriptionWord-p. 21
7.5  Reference pointsWord-p. 24
8  IdentitiesUpWord-p. 26
9  Application of functional model to deploymentsWord-p. 26
10  Procedures and information flowsWord-p. 27
10.1  MCPTT service configurationWord-p. 27
10.2  User authentication and authorization for MCPTT serviceWord-p. 27
10.3  Affiliation and de-affiliation to/from MCPTT group(s)Word-p. 28
10.3a  Activation and de-activation of/from functional alias(es) [R15]Word-p. 28
10.4  MCPTT group selectionWord-p. 28
10.5  Pre-established session (on-network)Word-p. 30
10.6  Group callWord-p. 34
10.6.1  GeneralWord-p. 34
10.6.2  On-network group callUpWord-p. 34
10.6.3  Off-network group callWord-p. 123
10.7  Private callWord-p. 135
10.7.1  GeneralWord-p. 135
10.7.2  Private call in on-networkWord-p. 135
10.7.3  Private call in off-networkWord-p. 152
10.7.4  MCPTT private call call-back requestWord-p. 157
10.7.5  MCPTT call forwarding for private calls [R16]Word-p. 160
10.7.6  Call transfer for MCPTT private calls [R17]UpWord-p. 165
10.8  Simultaneous session for MCPTT calls (on-network)Word-p. 168
10.9  Floor controlWord-p. 169
10.9.1  Floor control for on-network MCPTT serviceWord-p. 169
10.9.2  Floor control for off-network MCPTT serviceWord-p. 195
10.10  Use of MBMS transmission (on-network)Word-p. 202
10.11  MCPTT resource management (on-network)Word-p. 208
10.12  MCPTT media plane transmissions with partner MCPTT systems (on-network)Word-p. 208
10.13  Location information (on-network)Word-p. 210
10.14  Ambient listening callWord-p. 210
10.15  First-to-answer call setupWord-p. 217
10.16  Remotely initiated MCPTT callWord-p. 222
10.17  Support for multiple devicesWord-p. 225
10.18  Subscription and notification for functional alias [R16]UpWord-p. 225
A (Normative)  MCPTT related configuration dataWord-p. 228
B  Local UE settings for MCPTTWord-p. 244
C  Change historyWord-p. 245

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