ETSI TS 102 361-4 V1.6.1 (2014-06)

ETSI TS 102 361-4 V1.6.1 (2014-06)






Technical Specification
Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Digital Mobile Radio (DMR) Systems;
Part 4: DMR trunking protocol

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2 ETSI TS 102 361-4 V1.6.1 (2014-06)



Reference
RTS/ERM-TGDMR-315
Keywords
data, digital, MS, radio, signalling, trunking
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3 ETSI TS 102 361-4 V1.6.1 (2014-06)
Contents
Intellectual Property Rights . 10
Foreword . 10
1 Scope . 11
2 References . 11
2.1 Normative references . 11
2.2 Informative references . 12
3 Definitions, symbols and abbreviations . 12
3.1 Definitions . 12
3.2 Symbols . 16
3.3 Abbreviations . 16
4 Overview . 18
4.1 Protocol architecture. 19
4.1.1 Air Interface Physical Layer (layer 1). 20
4.1.2 Air Interface Data Link Layer (layer 2) . 20
4.1.3 Air Interface Call Control Layer (layer 3) . 21
4.2 Services and Facilities . 21
4.3 Device Addresses . 23
4.3.1 MS Addresses . 23
4.3.2 Services and Gateway Addresses . 23
4.4 Conventional/Trunked Systems . 23
4.5 MS Location . 23
4.6 Tier III Services . 24
4.6.1 MS initiating calls . 24
4.6.2 MS receiving calls . 24
4.6.2.1 MS receiving individual calls . 25
4.6.2.1.1 Off Air Call Set-Up (OACSU) . 25
4.6.2.1.2 Full Off Air Call Set-Up (FOACSU). 25
4.6.2.2 MS receiving calls to talkgroups . 25
4.6.2.3 MS receiving calls to All_MS . 25
4.7 Physical Link Organization . 25
4.7.1 Radio Frequency Allocation . 25
4.7.2 Colour Code (CC) . 25
4.8 DMR TDMA burst and channel structure . 26
4.9 Introduction to the TS Structure . 27
4.9.1 An individual voice call example . 27
4.9.1.1 Individual Call using OACSU. 27
4.9.1.2 Individual Call using FOACSU . 28
4.9.2 A talkgroup call example . 29
4.10 Network architecture . 29
4.10.1 Network functions . 30
4.10.1.1 Establishing service . 30
4.10.1.2 Network Identifier . 30
4.10.2 MS Location by Registration . 30
4.11 Trunking methods. 30
4.11.1 Message trunking . 30
4.11.2 Transmission trunking . 31
4.11.3 Quasi-Transmission trunking . 31
5 Trunking Control Channel Formats . 31
5.1 The use of the CACH . 32
5.1.1 SYS_Parms - System Identity Code Subset . 32
5.1.2 SYS_Parms - Reg . 32
5.1.3 SYS_Parms - Common_Slot_Counter . 32
5.2 Tier III signalling. 33
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4 ETSI TS 102 361-4 V1.6.1 (2014-06)
5.3 Modes of control channel . 33
5.3.1 Dedicated TSCC . 33
5.3.2 Non-Dedicated TSCC . 33
5.3.3 Operation in shared spectrum . 33
5.4 CSBK/MBC/UDT Block Structure . 34
5.4.1 CSBK/MBC/UDT PDUs on the TSCC outbound channel . 34
5.4.2 CSBK/MBC/UDT PDUs on the TSCC inbound channel . 35
5.4.3 CSBK/MBC PDUs on the Payload Channel Outbound channel . 36
5.4.4 CSBK PDUs on the Payload Channel Inbound channel . 37
6 Trunking Procedures . 37
6.1 Basic Structure . 37
6.1.1 Channel Structure . 37
6.1.1.1 Fully Regulated Structure . 37
6.1.1.2 Shared Channel Unregulated Structure . 38
6.1.2 Physical Channel Addressing . 38
6.1.3 Sub-Division of the MS population . 38
6.2 Random Access Procedures . 40
6.2.1 The Random Access Principle . 40
6.2.1.1 Random Access Control . 40
6.2.1.1.1 Sub dividing the MS population . 40
6.2.1.1.2 Checking the Service-Function . 41
6.2.1.1.3 Withdrawing slots from Random-Access . 41
6.2.1.1.4 TSCC responses to Random Access attempts . 42
6.2.1.1.5 Noting the response delay. 42
6.2.1.1.6 Random Backoff . 43
6.2.1.1.7 Retry decision and time-outs . 44
6.2.1.1.8 Random Access (non-emergency) SDL for a MS as defined in clause 6.2 . 45
6.2.1.1.9 Random Access (emergency) SDL for a MS as defined in clause 6.2 . 48
6.2.1.2 Action after receiving an acknowledgement . 50
6.2.1.3 MS Arriving on a Control Channel . 51
6.3 Control Channel Acquisition and Retention . 51
6.3.1 MS Parameter Volatility . 52
6.3.2 Control Channel Acquisition Procedures . 52
6.3.2.1 Entry into TSCC Acquisition Procedures . 53
6.3.2.2 Identifying a Candidate Control Channel . 53
6.3.2.2.1 Checking the System Identity Code . 53
6.3.2.2.2 TSCC Authorization Procedure . 56
6.3.2.2.3 Checking the SYS_AREA information element . 57
6.3.2.3 Confirmation - Monitoring the TSCC outbound channel signal quality . 58
6.3.3 MS Leaving a Control Channel . 58
6.3.3.1 Reasons for Leaving a Control Channel when active but idle . 58
6.3.3.2 Leaving a Control Channel Whilst Waiting for Signalling . 59
6.4 Registration, Power Save, and Authentication Procedures . 59
6.4.1 Registration . 60
6.4.1.1 Introduction . 60
6.4.1.2 The Principle . 60
6.4.2 MS Parameter Volatility . 61
6.4.3 Action on confirmation of a TSCC . 61
6.4.4 Registration Procedures . 62
6.4.4.1 Registration by Random Access . 62
6.4.4.1.1 Intermediate Acknowledgement . 64
6.4.4.1.2 Registration accepted . 64
6.4.4.1.3 Registration Refused . 64
6.4.4.1.4 Registration Denied . 64
6.4.4.1.5 Challenge and Response Authentication . 64
6.4.4.1.6 Registration Attempt Times Out . 65
6.4.4.1.7 Registration Demand Received During Random Access Registration . 65
6.4.4.1.8 No answer response Received after the maximum number of random access attempts . 65
6.4.4.1.9 Registration Action on Switch-on or equivalent . 65
6.4.4.1.10 Registration scenario MSC . 66
6.4.4.1.11 Registration with MS authentication . 67
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5 ETSI TS 102 361-4 V1.6.1 (2014-06)
6.4.4.1.12 Acceptance of user initiated service requests . 68
6.4.5 Mass re-registration . 69
6.4.5.1 Procedure for MS on receipt of Mass Re-registration Broadcast . 69
6.4.6 De-registration . 70
6.4.7 Power Save . 70
6.4.7.1 Overview . 70
6.4.7.2 Power Save Procedures . 71
6.4.7.2.1 Basic Power Save Procedures . 71
6.4.8 Authentication Procedures . 72
6.4.8.1 Key Management . 73
6.4.8.2 Authentication Procedures for the TSCC to authenticate a MS . 73
6.4.8.3 Authentication Procedures for the MS . 74
6.4.9 MS Stun/Revive . 74
6.4.9.1 MS Stun/Revive without authentication. 74
6.4.9.1.1 Stun / Revive procedures for the TSCC . 74
6.4.9.1.2 Stun / Revive procedures for the MS . 75
6.4.9.2 MS Stun/Revive with authentication . 75
6.4.9.2.1 Stun / Revive procedures with authentication for the TSCC . 75
6.4.9.2.2 Stun / Revive procedures with authentication for the MS . 76
6.4.10 MS Kill . 77
6.4.10.1 Kill procedures with authentication for the TSCC . 77
6.4.10.2 Kill procedures with authentication for the MS . 78
6.4.11 IP Connection Advice . 79
6.4.11.1 IP Connection Advice procedures for the MS . 79
6.4.11.1.1 Registration Attempt Times Out . 79
6.4.11.1.2 No answer response received after the maximum number of random access attempts . 80
6.4.11.1.3 MS response to C_AHOY inviting the MS to send an IP address . 80
6.4.11.1.4 Final acknowledgment to IP connection advice received by the calling MS . 80
6.4.11.2 IP Connection Advice procedures for the TSCC . 80
6.4.12 Unsolicited MS Radio Check. 80
6.4.13 Supplementary_User Data Service . 81
6.4.14 MS Power Control and Transmitter Pre-emption Control . 82
6.4.14.1 Reverse Channel . 82
6.4.14.2 Procedures for Power Control . 83
6.4.14.3 Procedures for Transmission Pre-emption Control . 83
6.5 Unified Data Transport Mechanism . 83
6.5.1 Format of the appended data . 86
6.5.1.1 UDT Block Structure . 86
6.5.1.2 UDT Content for Services Carried on the Outbound channel . 87
6.5.1.3 UDT Mechanism for the Inbound channel . 88
6.6 Call procedures . 89
6.6.1 Procedures common to Voice calls and Packet Data Calls . 90
6.6.1.1 MS Availability Checks . 90
6.6.1.1.1 Availability of calling MS . 90
6.6.1.1.2 Availability of called party as part of a call . 91
6.6.1.1.3 General MS radio check . 91
6.6.1.2 Call Cancellation . 91
6.6.1.2.1 Cancelling a OACSU Call . 91
6.6.1.2.2 Cancelling a FOACSU Call . 91
6.6.1.3 Acknowledgements sent to calling MS . 92
6.6.1.4 Called Party Answering Mechanism . 92
6.6.1.4.1 TSCC response to the Call Answer Random Access. 93
6.6.1.4.2 Call Party Answer behaviour for the MS. 93
6.6.1.5 Maintenance of call progress waiting timers . 94
6.6.1.5.1 Call waiting timer for the calling MS . 94
6.6.1.5.2 Call waiting timer for the called MS . 94
6.6.1.6 Payload Channel Assignment. 95
6.6.1.7 Calls to ALLMSID, ALLMSIDL and ALLMSIDZ . 95
6.6.2 Voice Call Procedures . 96
6.6.2.1 Voice Call Procedures for the TSCC . 97
6.6.2.1.1 TSCC Response to single-part voice call set-up . 97
6.6.2.1.2 TSCC Response to multi-part voice call set-up . 97
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6 ETSI TS 102 361-4 V1.6.1 (2014-06)
6.6.2.1.3 Acknowledgements sent by the TSCC to the calling MS (voice). 98
6.6.2.1.4 Voice Radio Check . 98
6.6.2.1.5 Availability Check for Voice Calls connected through Gateways . 99
6.6.2.2 Voice Call Procedures for MS .
...