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TECHNICAL SPECIFICATION
LTE;
Functional architecture and information flows to support
Mission Critical Video (MCVideo);
Stage 2
(3GPP TS 23.281 version 15.5.0 Release 15)
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3GPP TS 23.281 version 15.5.0 Release 15 1 ETSI TS 123 281 V15.5.0 (2019-03)
Reference
RTS/TSGS-0623281vf50
Keywords
LTE
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3GPP TS 23.281 version 15.5.0 Release 15 2 ETSI TS 123 281 V15.5.0 (2019-03)
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
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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
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"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 23.281 version 15.5.0 Release 15 3 ETSI TS 123 281 V15.5.0 (2019-03)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 10
1 Scope . 11
2 References . 11
3 Definitions, symbols and abbreviations . 12
3.1 Definitions . 12
3.2 Symbols . 13
3.3 Abbreviations . 13
4 Introduction . 13
5 Architectural requirements . 13
5.1 Media routing requirements . 13
5.2 MCVideo group affiliation and MCVideo group de-affiliation . 13
5.3 Device inventory requirements . 14
5.4 Device discovery requirements (off-network) . 14
5.5 Bearer management . 14
5.5.1 General . 14
5.5.2 EPS bearer considerations . 14
5.5.3 EPS unicast bearer considerations for MCVideo . 14
5.5.4 MBMS bearer management . 15
5A Involved business relationships . 15
6 MCVideo Functional model . 15
6.1 Functional model description . 15
6.1.1 On-network functional model . 15
6.1.2 Off-network functional model . 15
6.2 Functional entities description . 16
6.2.1 General . 16
6.2.2 MCVideo service application plane . 16
6.2.2.1 General . 16
6.2.2.2 Common services core . 16
6.2.2.3 MCVideo application service . 16
6.2.2.3.1 MCVideo client . 16
6.2.2.3.2 MCVideo server . 16
6.2.2.3.3 Media distribution function . 17
6.2.2.3.4 Media mixer . 17
6.2.2.3.5 MCVideo user database . 17
6.2.2.3.6 Transmission control server . 17
6.2.2.3.7 Transmission control participant . 18
6.2.2.3.8 MC gateway server . 18
6.3 Reference points . 18
6.3.1 Reference point MCVideo-1 (between the MCVideo client and the MCVideo server) . 18
6.3.2 Reference point MCVideo-2 (between the MCVideo server and the MCVideo user database) . 18
6.3.3 Reference point MCVideo-3 (between the MCVideo server and the MCVideo server and between
the MCVideo server and the MC gateway server) . 18
6.3.4 Reference point MCVideo-4 (between the transmission control participant and the transmission
control server) . 18
6.3.4A Reference point MCVideo-5 (unicast between the media distribution function and the EPS) . 18
6.3.4B Reference point MCVideo-6 (between the MCVideo server and the EPS) . 19
6.3.5 Reference point MCVideo-7 (between the media distribution function and the media mixer) . 19
6.3.6 Reference point MCVideo-8 (between the media distribution function and the media mixer) . 19
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3GPP TS 23.281 version 15.5.0 Release 15 4 ETSI TS 123 281 V15.5.0 (2019-03)
6.3.7 Reference point MCVideo-9 (between the transmission control participant and the transmission
control server) . 19
6.3.8 Reference point MCVideo-10 (between the MC gateway server and the MC gateway server in a
different MCVideo system) . 19
6A Identities . 19
6B Application of functional model to deployments . 19
7 Procedures and information flows . 19
7.1 Group call . 19
7.1.1 General . 19
7.1.2 On-network group call . 20
7.1.2.1 General . 20
7.1.2.2 Information flows for group call in on-network . 20
7.1.2.2.1 Group call request (MCVideo client – MCVideo server) . 20
7.1.2.2.2 Group call request (MCVideo server – MCVideo client) . 20
7.1.2.2.3 Group call response (MCVideo server – MCVideo client) . 20
7.1.2.2.4 Group call response (MCVideo client – MCVideo server) . 21
7.1.2.2.5 Group call release request (MCVideo server – MCVideo client) . 21
7.1.2.2.6 Group call release request (MCVideo client – MCVideo server) . 21
7.1.2.2.7 Group call release response (MCVideo client – MCVideo server) . 21
7.1.2.2.8 Group call rejoin request (MCVideo client – MCVideo server) . 22
7.1.2.2.9 Group call rejoin response (MCVideo server – MCVideo client) . 22
7.1.2.2.10 Group call join request (MCVideo client – MCVideo server). 22
7.1.2.2.11 Group call join response (MCVideo server – MCVideo client) . 23
7.1.2.2.12 Group call leave request (MCVideo server – MCVideo client) . 23
7.1.2.2.13 Group call leave response (MCVideo client – MCVideo server) . 23
7.1.2.2.14 MCVideo emergency alert request . 23
7.1.2.2.15 MCVideo emergency alert response . 24
7.1.2.2.16 MCVideo emergency alert cancel request . 24
7.1.2.2.17 MCVideo emergency alert cancel response . 24
7.1.2.2.18 MCVideo emergency group call request . 25
7.1.2.2.19 MCVideo emergency group call response . 25
7.1.2.2.20 MCVideo in-progress emergency group state cancel request . 25
7.1.2.2.21 MCVideo in-progress emergency group state cancel response . 26
7.1.2.2.22 MCVideo imminent peril group call request . 26
7.1.2.2.23 MCVideo imminent peril group call response . 26
7.1.2.2.24 MCVideo imminent peril group call cancel request . 27
7.1.2.2.25 MCVideo imminent peril group call cancel response. 27
7.1.2.3 Group call within one MC system . 27
7.1.2.3.1 Group call models. 27
7.1.2.3.1.1 Pre-arranged group call . 27
7.1.2.3.1.2 Chat group call . 32
7.1.2.3.2 Exiting group call due to de-affiliation . 36
7.1.2.4 Broadcast group call . 37
7.1.2.4.1 General . 37
7.1.2.4.2 Common broadcast group call procedure . 37
7.1.2.5 Emergency and imminent peril procedures . 38
7.1.2.5.1 MCVideo emergency group call . 38
7.1.2.5.1.1 MCVideo emergency group call commencement . 38
7.1.2.5.1.2 MCVideo group call upgraded to an MCVideo emergency group call . 40
7.1.2.5.1.3 MCVideo in-progress emergency group state cancel . 42
7.1.2.5.2 MCVideo imminent peril group call. 44
7.1.2.5.2.1 MCVideo imminent peril group call commencement . 44
7.1.2.5.2.2 Imminent peril group call upgrade . 46
7.1.2.5.2.3 MCVideo imminent peril group call cancel . 47
7.1.2.6 MCVideo emergency alert . 49
7.1.2.6.1 General . 49
7.1.3 Off-network group communications . 49
7.1.3.1 General . 49
7.1.3.2 Information flows for off-network group communications . 49
7.1.3.2.1 Group communication announcement . 49
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3GPP TS 23.281 version 15.5.0 Release 15 5 ETSI TS 123 281 V15.5.0 (2019-03)
7.1.3.2.2 Group communication answer response . 50
7.1.3.2.3 MCVideo upgrade to emergency group communication . 50
7.1.3.2.4 MCVideo emergency group communication cancel. 51
7.1.3.2.5 MCVideo upgrade to imminent peril group communication . 51
7.1.3.2.6 MCVideo imminent peril group communication cancel . 51
7.1.3.2.7 MCVideo emergency alert announcement . 51
7.1.3.2.8 MCVideo emergency alert cancel announcement . 52
7.1.3.3 Group communication setup . 52
7.1.3.3.1 General . 52
7.1.3.3.2 Procedure . 52
7.1.3.4 Passive join to group communication . 53
7.1.3.4.1 General . 53
7.1.3.4.2 Procedure . 54
7.1.3.5 Active join to group communication . 55
7.1.3.5.1 General . 55
7.1.3.5.2 Procedure . 55
7.1.3.6 Broadcast group communication . 56
7.1.3.7 Group communication release due to inactivity . 56
7.1.3.8 Emergency and imminent peril procedures . 57
7.1.3.8.1 Emergency group communication . 57
7.1.3.8.2 MCVideo imminent peril. 57
7.1.3.9 MCVideo emergency alert . 58
7.1.3.9.1 General . 58
7.2 Private call . 58
7.2.1 General . 58
7.2.2 Private call on-network . 58
7.2.2.1 General . 58
7.2.2.2 Information flows for private call in on-network . 58
7.2.2.2.1 MCVideo private call request (MCVideo client – MCVideo server) . 58
7.2.2.2.2 MCVideo private call request (MCVideo server – MCVideo client) . 59
7.2.2.2.3 MCVideo private call response (MCVideo client – MCVideo server). 59
7.2.2.2.4 MCVideo private call response (MCVideo server – MCVideo client) . 60
7.2.2.2.5 MCVideo call end request . 60
7.2.2.2.6 MCVideo emergency private call request (MCVideo client to MCVideo server) . 60
7.2.2.2.7 MCVideo emergency private call request (MCVideo server to MCVideo client) . 61
7.2.2.2.8 Emergency MCVideo private call response (MCVideo client – MCVideo server) . 61
7.2.2.2.9 Emergency MCVideo private call response (MCVideo server – MCVideo client) . 62
7.2.2.3 Private call within one MC system . 62
7.2.2.3.1 Private call setup in automatic commencement mode . 62
7.2.2.3.2 Private call setup in manual commencement mode . 63
7.2.2.3.2.1 Description . 63
7.2.2.3.2.2 Procedure . 63
7.2.2.3.3 Private call release . 65
7.2.2.3.3.1 Client initiated. 65
7.2.2.3.3.2 Server initiated . 66
7.2.2.4 MCVideo emergency private call . 67
7.2.2.4.1 MCVideo emergency private call commencement . 67
7.2.2.4.2 MCVideo private call emergency upgrade . 68
7.2.3 Off-network private communications . 69
7.2.3.1 General . 69
7.2.3.2 Information flows for off-network private communications . 69
7.2.3.2.1 Private communication request . 69
7.2.3.2.2 Private communication answer response . 69
7.2.3.2.3 Private communication release request. 70
7.2.3.2.4 Private communication release response . 70
7.2.3.3 Use of ProSe for off-network private communications . 71
7.2.3.4 Automatic commencement private communication . 71
7.2.3.4.1 General . 71
7.2.3.4.2 Procedure .
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