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TECHNICAL SPECIFICATION
LTE;
Mission Critical Push to Talk (MCPTT) over LTE;
Stage 1
(3GPP TS 22.179 version 15.2.0 Release 15)
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3GPP TS 22.179 version 15.2.0 Release 15 1 ETSI TS 122 179 V15.2.0 (2018-07)
Reference
RTS/TSGS-0122179vf20
Keywords
LTE
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3GPP TS 22.179 version 15.2.0 Release 15 2 ETSI TS 122 179 V15.2.0 (2018-07)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables 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
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
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Foreword
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or
GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.
The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
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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
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
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3GPP TS 22.179 version 15.2.0 Release 15 3 ETSI TS 122 179 V15.2.0 (2018-07)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 8
Introduction . 8
1 Scope . 9
2 References . 9
3 Definitions and abbreviations . 10
3.1 Definitions . 10
3.2 Abbreviations . 12
4 Mission Critical Push To Talk overview . 12
4.1 General . 12
4.2 Typical use of the MCPTT Service . 13
4.3 Overview of MCPTT Group affiliation, call and transmission . 13
4.4 General handling of requests . 17
4.5 Overview of MCPTT UE and MCPTT User in the MCPTT Service . 17
4.5.1 MCPTT User association to MCPTT UE in on-network mode . 18
4.5.2 MCPTT User and MCPTT UE relationship . 18
4.5.3 MCPTT Users accessing the service through non-3GPP access interface . 18
4.5.4 Shareable MCPTT UEs and gateway UEs . 18
4.5.5 MCPTT User association to MCPTT UE in off-network mode . 19
4.6 Overview of MCPTT priorities . 19
4.6.1 MCPTT priority model . 19
4.6.2 Generic processing of priority information . 21
4.6.3 Handling of MCPTT priority information for Floor control . 21
4.6.4 Handling of MCPTT priority information for interactions at the transport layer . 21
4.6.5 Handling of MCPTT priority information for interactions with non-3GPP PTT systems . 22
4.6.6 MCPTT priority for Private Call . 22
4.7 Overview of MCPTT identifiers . 22
5 MCPTT Service requirements common for on the network and off the network . 22
5.1 General group call requirements . 22
5.1.1 General aspects . 22
5.1.2 Group/status information . 23
5.1.3 Group configuration . 23
5.1.4 Identification . 23
5.1.5 Membership/affiliation . 23
5.1.6 Group Call administration . 23
5.1.7 Prioritization . 23
5.1.8 Charging requirements for MCPTT . 23
5.2 Broadcast Group . 24
5.2.1 General Broadcast Group Call . 24
5.2.2 Group-Broadcast Group (e.g., announcement group) . 24
5.2.3 User-Broadcast Group (e.g., System Call) . 24
5.3 Late call entry . 24
5.4 Dynamic group management (i.e., dynamic regrouping) . 24
5.5 Receiving from multiple MCPTT calls . 24
5.5.1 Overview . 24
5.5.2 Requirements . 25
5.6 Private Call . 25
5.6.1 Private Call overview. 25
5.6.2 Private Call (with Floor control) general requirements . 25
5.6.3 Private Call (with Floor control) commencement requirements . 26
5.6.4 Private Call (with Floor control) termination . 26
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3GPP TS 22.179 version 15.2.0 Release 15 4 ETSI TS 122 179 V15.2.0 (2018-07)
5.6.5 Private Call (with Floor control) administration . 27
5.7 MCPTT priority requirements . 27
5.7.1 Overview . 27
5.7.2 Call types based on priorities . 28
5.7.2.1 MCPTT Emergency Group Call . 28
5.7.2.1.1 MCPTT Emergency Group Call requirements . 28
5.7.2.1.2 MCPTT Emergency Group Call cancellation requirements . 28
5.7.2.2 Imminent Peril group call . 29
5.7.2.2.1 Imminent Peril group call requirements . 29
5.7.2.2.2 Imminent Peril group call cancellation requirements . 29
5.7.2.3 MCPTT Emergency Private Call (with Floor control) . 29
5.7.2.3.1 MCPTT Emergency Private Call (with Floor control) requirements. 29
5.7.2.3.2 MCPTT Emergency Private Call (with Floor control) cancellation requirements . 29
5.7.2.4 MCPTT Emergency Alert . 30
5.7.2.4.1 MCPTT Emergency Alert requirements . 30
5.7.2.4.2 MCPTT Emergency Alert cancellation requirements. 30
5.8 User ID . 30
5.9 MCPTT UE management . 30
5.10 MCPTT User Profile . 30
5.11 Support for multiple devices . 30
5.12 Location . 30
5.13 Security . 31
5.14 Audio / voice quality . 31
5.15 Interactions between MCPTT Group calls and MCPTT Private Calls (with Floor control) . 32
5.16 Relay requirements . 32
5.17 Gateway requirements . 32
5.18 Control and management by Mission Critical Organizations . 32
5.18.1 Overview . 32
5.18.2 General requirements . 32
5.18.3 Operational visibility for Mission Critical Organizations . 32
5.19 General Administrative – groups and users . 32
6 MCPTT Service requirements specific to on-network use . 33
6.1 General administrative – groups and users . 33
6.2 MCPTT calls . 33
6.2.1 Commencement modes for MCPTT Group calls. 33
6.2.2 Queuing . 34
6.2.3 Floor control . 34
6.2.3.1 General aspects . 34
6.2.3.2 Requesting permission to transmit . 34
6.2.3.3 Override . 35
6.2.3.3.1 General aspects . 35
6.2.3.3.2 Override – one transmitting Participant . 36
6.2.3.3.3 Override – simultaneously Transmitting MCPTT Group Members . 36
6.2.3.4 Terminating permission to transmit . 36
6.2.3.5 Transmit time limit . 36
6.2.3.6 Audio cut-in on designated MCPTT Groups . 36
6.2.3.6.1 Overview . 36
6.2.3.6.2 Requirements . 37
6.2.3.6.3 Requesting permission to transmit . 37
6.2.3.6.4 Terminating permission to transmit . 37
6.2.3.6.5 Transmit time limit . 37
6.2.3.7 MCPTT Groups configured for multi-talker control . 38
6.2.3.7.1 Overview . 38
6.2.3.7.2 General aspects . 38
6.2.3.7.3 Requesting permission to transmit . 38
6.2.3.7.4 Override . 38
6.2.4 Call termination . 39
6.3 General requirements . 39
6.4 General group call . 40
6.4.1 General aspects . 40
6.4.2 Group status/information . 40
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3GPP TS 22.179 version 15.2.0 Release 15 5 ETSI TS 122 179 V15.2.0 (2018-07)
6.4.3 Identification . 40
6.4.4 Membership/affiliation . 40
6.4.5 Membership/affiliation list . 40
6.4.6 Authorized user remotely changes another MCPTT User's affiliated and/or Selected MCPTT
Group(s) . 40
6.4.6.1 Mandatory change . 40
6.4.6.2 Negotiated change . 41
6.4.7 Prioritization . 41
6.4.8 Relay requirements . 41
6.4.9 Administrative . 41
6.5 Broadcast group . 41
6.5.1 General Broadcast Group Call . 41
6.5.2 Group-Broadcast Group (e.g., announcement group) . 41
6.5.3 User-Broadcast Group (e.g., System Call) . 41
6.6 Dynamic group management (i.e., dynamic regrouping) . 42
6.6.1 General dynamic regrouping. 42
6.6.2 Group Regrouping . 42
6.6.2.1 Service description . 42
6.6.2.2 Requirements . 42
6.6.3 Temporary Group-Broadcast Group . 42
6.6.4 User regrouping . 42
6.6.4.1 Service description . 42
6.6.4.2 Requirements . 43
6.7 Private Call . 43
6.7.0 Overview . 43
6.7.1 General requirements . 43
6.7.2 Administrative . 44
6.7.3 Prioritization . 44
6.7.4 Private Call (without Floor control) commencement requirements . 44
6.7.4a Private Call (with Floor control) commencement requirements . 45
6.7.5 Private Call (without Floor control) termination . 45
6.7.6 Call back request requirements . 45
6.8 MCPTT priority requirements . 45
6.8.1 General . 45
6.8.2 3GPP system access controls . 46
6.8.3 3GPP system admission controls . 46
6.8.4 3GPP system scheduling controls . 46
6.8.5 UE access controls . 46
6.8.6 Application layer priorities . 46
6.8.6.1 Overview . 46
6.8.6.2 Requirements . 46
6.8.7 Call types based on priorities . 47
6.8.7.1 MCPTT Emergency Group Call requirements . 47
6.8.7.2 MCPTT Emergency Private Call (with Floor control) requirements . 47
6.8.7.3 Imminent Peril group call requirements . 47
6.8.7.4 MCPTT Emergency Alert . 47
6.8.7.4.1 Requirements . 47
6.8.7.4.2 MCPTT Emergency Alert cancellation requirements. 47
6.9 IDs and aliases . 47
6.10 User Profile management . 48
6.11 Support for multiple devices . 48
6.12 Location . 48
6.13 Security . 48
6.13.1 Overview . 48
6.13.2 Cryptographic protocols . 48
6.13.3 Authentication .
...