ETSI TS 102 361-1 V2.3.1 (2013-07)

Electromagnetic compatibility and Radio spectrum Matters (ERM); Digital Mobile Radio (DMR) Systems; Part 1: DMR Air Interface (AI) protocol

RTS/ERM-TGDMR-313-1

General Information

• Status: Published
• Publication Date: 03-Jul-2013
• Technical Committee: ERM TGDMR - Digital Mobile Radio
• Current Stage: 12 - Completion
• Due Date: 08-Jul-2013
• Completion Date: 04-Jul-2013

Standards Content (Sample)

ETSI TS 102 361-1 V2.3.1 (2013-07)






Technical Specification
Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Digital Mobile Radio (DMR) Systems;
Part 1: DMR Air Interface (AI) protocol

---------------------- Page: 1 ----------------------
2 ETSI TS 102 361-1 V2.3.1 (2013-07)



Reference
RTS/ERM-TGDMR-313-1
Keywords
digital, PMR
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2013.
All rights reserved.

TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members.
TM
3GPP and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3 ETSI TS 102 361-1 V2.3.1 (2013-07)
Contents
Intellectual Property Rights . 8
Foreword . 8
1 Scope . 9
2 References . 9
2.1 Normative references . 9
2.2 Informative references . 10
3 Definitions, symbols and abbreviations . 10
3.1 Definitions . 10
3.2 Symbols . 13
3.3 Abbreviations . 13
4 Overview . 15
4.1 Protocol architecture. 16
4.1.1 Air Interface Physical Layer (layer 1). 17
4.1.2 Air Interface Data Link Layer (layer 2) . 17
4.1.3 Air Interface Call Control Layer (CCL) (layer 3) . 17
4.2 DMR TDMA structure . 18
4.2.1 Overview of burst and channel structure . 18
4.2.2 Burst and frame structure . 19
4.3 Frame synchronization . 20
4.4 Timing references . 22
4.4.1 Repeater mode BS established timing relationship . 22
4.4.2 Repeater mode MS established timing relationship . 22
4.4.3 Direct mode timing relationship . 22
4.4.4 TDMA direct mode timing relationship. 22
4.5 Common Announcement Channel (CACH) . 23
4.6 Basic channel types . 24
4.6.1 Traffic channel with CACH . 24
4.6.2 Traffic channel with guard time . 24
4.6.3 Bi-directional channel . 25
5 Layer 2 protocol description . 25
5.1 Layer 2 timing . 25
5.1.1 Channel timing relationship . 25
5.1.1.1 Aligned channel timing . 26
5.1.1.2 Offset channel timing . 26
5.1.2 Voice timing . 26
5.1.2.1 Voice superframe . 26
5.1.2.2 Voice initiation . 27
5.1.2.3 Voice termination . 28
5.1.3 Data timing . 28
5.1.3.1 Single slot data timing . 28
5.1.3.2 Dual slot data timing . 29
5.1.4 Traffic timing . 29
5.1.4.1 BS timing . 29
5.1.4.2 Single frequency BS timing . 30
5.1.4.3 Direct mode timing . 31
5.1.4.4 Time Division Duplex (TDD) timing . 31
5.1.4.5 Continuous transmission mode . 31
5.1.4.6 TDMA direct mode timing . 32
5.1.5 Reverse Channel (RC) timing . 32
5.1.5.1 Embedded outbound Reverse Channel (RC) . 33
5.1.5.2 Dedicated outbound Reverse Channel (RC) . 33
5.1.5.3 Standalone inbound Reverse Channel (RC) . 34
5.1.5.4 Direct mode Reverse Channel (RC) . 34
ETSI

---------------------- Page: 3 ----------------------
4 ETSI TS 102 361-1 V2.3.1 (2013-07)
5.2 Channel access . 35
5.2.1 Basic channel access rules . 36
5.2.1.1 Types of channel activity . 36
5.2.1.2 Channel status . 37
5.2.1.3 Timing master . 37
5.2.1.4 Hang time messages and timers . 38
5.2.1.5 Slot 1 and 2 dependency . 38
5.2.1.6 Transmit admit criteria . 38
5.2.1.7 Transmission re-tries . 39
5.2.2 Channel access procedure . 39
5.2.2.1 Direct mode Channel Access . 39
5.2.2.1.1 MS Out_of_Sync Channel Access. 40
5.2.2.1.2 MS Out_of_Sync_Channel_Monitored Channel Access . 42
5.2.2.1.3 MS In_Sync_Unknown_System Channel Access . 43
5.2.2.1.4 MS Not_in_Call Channel Access . 44
5.2.2.1.5 MS Others_Call Channel Access . 44
5.2.2.1.6 MS My_Call Channel Access . 44
5.2.2.2 Repeater mode channel access . 44
5.2.2.2.1 MS Out_of_Sync Channel Access. 44
5.2.2.2.2 MS Out_of_Sync_Channel_Monitored Channel Access . 46
5.2.2.2.3 MS In_Sync_Unknown_System channel access . 47
5.2.2.2.4 MS TX_Wakeup_Message . 48
5.2.2.2.5 MS Not_In_Call channel access . 49
5.2.2.2.6 MS Others_Call channel access . 50
5.2.2.2.7 MS My_Call channel access . 50
5.2.2.2.8 MS In_Session channel access . 50
5.2.2.3 Non-time critical CSBK ACK/NACK channel access . 50
5.2.2.4 TDMA direct mode channel access . 51
5.2.2.4.1 MS Out_of_Sync channel access . 51
5.2.2.4.2 MS Out_of_Sync_Channel_Monitored channel access . 54
5.2.2.4.3 MS In_Sync_Unknown_System channel access . 55
5.2.2.4.4 MS Not_in_Call channel access . 56
5.2.2.4.5 MS Others_Call channel access . 56
5.2.2.4.6 MS My_Call channel access . 56
5.2.2.4.7 Immediate response channel access. 56
6 Layer 2 burst format . 56
6.1 Vocoder socket . 57
6.2 Data and control . 58
6.3 Common Announcement Channel burst . 59
6.4 Reverse Channel . 60
6.4.1 Standalone inbound Reverse Channel burst . 60
6.4.2 Outbound reverse channel (RC) burst . 61
7 DMR signalling . 61
7.1 Link Control message structure . 61
7.1.1 Voice LC header . 62
7.1.2 Terminator with LC . 63
7.1.3 Embedded signalling. 64
7.1.3.1 Outbound channel . 64
7.1.3.2 Inbound channel . 65
7.1.4 Short Link Control in CACH . 65
7.2 Control Signalling BlocK (CSBK) message structure . 66
7.2.1 Control Signalling BlocK (CSBK) . 66
7.3 Idle message . 67
7.4 Multi Block Control (MBC) message structure. 68
7.4.1 Multi Block Control (MBC) . 69
8 DMR Packet Data Protocol (PDP) . . 71
8.1 Internet Protocol . 71
8.2 Datagram fragmentation and re-assembly . 72
8.2.1 Header block structure . 73
8.2.1.1 Unconfirmed data Header . 74
ETSI

---------------------- Page: 4 ----------------------
5 ETSI TS 102 361-1 V2.3.1 (2013-07)
8.2.1.2 Confirmed data header . 75
8.2.1.3 Response data header . 75
8.2.1.4 Proprietary data header . 75
8.2.1.5 Status/precoded short data header . 76
8.2.1.6 Raw short data header . 77
8.2.1.7 Defined short data header . 77
8.2.1.8 Unified Data Transport (UDT) data header. 78
8.2.2 Data block structure . 78
8.2.2.1 Unconfirmed data block structure . 78
8.2.2.2 Confirmed data block structure . 81
8.2.2.3 Response packet format . 84
8.2.2.4 Hang time for response packet . 85
8.2.2.5 Unified Data Transport (UDT) last data block structure . 86
9 Layer 2 PDU description . 87
9.1 PDUs for voice bursts, general data bursts and the CACH . 87
9.1.1 Synchronization (SYNC) PDU . 87
9.1.2 Embedded signalling (EMB) PDU . 88
9.1.3 Slot Type (SLOT) PDU . 88
9.1.4 TACT PDU . 89
9.1.5 Reverse Channel (RC) PDU . 89
9.1.6 Full Link Control (FULL LC) PDU . 89
9.1.7 Short Link Control (SHORT LC) PDU . 89
9.1.8 Control Signalling Block (CSBK) PDU . 90
9.1.9 Pseudo Random Fill Bit (PR FILL) PDU . 90
9.2 Data related PDU description . 90
9.2.1 Confirmed packet Header (C_HEAD) PDU . 90
9.2.2 Rate ¾ coded packet Data (R_3_4_DATA) PDU . 91
9.2.3 Rate ¾ coded Last Data block (R_3_4_LDATA) PDU . 91
9.2.4 Confirmed Response packet Header (C_RHEAD) PDU . 92
9.2.5 Confirmed Response packet Data (C_RDATA) PDU . 92
9.2.6 Unconfirmed data packet Header (U_HEAD) PDU . 92
9.2.7 Rate ½ coded packet Data (R_1_2_DATA) PDU . 93
9.2.8 Rate ½ coded Last Data block (R_1_2_LDATA) PDU . 93
9.2.9 Proprietary Header (P_HEAD) PDU . 94
9.2.10 Status/Precoded short data packet Header (SP_HEAD) PDU . 94
9.2.11 Raw short data packet Header (R_HEAD) PDU . 94
9.2.12 Defined Data short data packet Header (DD_HEAD) PDU . 95
9.2.13 Unified Data Transport Header (UDT_HEAD) PDU . 95
9.2.14 Unified Data Transport Last Data block (UDT_LDATA) PDU . 95
9.2.15 Rate 1 coded packet Data (R_1_DATA) PDU . 96
9.2.16 Rate 1 coded Last Data block (R_1_LDATA) PDU . 96
9.3 Layer 2 information element coding . 97
9.3.1 Colour Code (CC) . 97
9.3.2 Privacy Indicator (PI). 97
9.3.3 LC Start/Stop (LCSS) . 97
9.3.4 EMB parity . 97
9.3.5 Feature set ID (FID) . 98
9.3.6 Data Type. 98
9.3.7 Slot Type parity . 98
9.3.8 Access Type (AT) . 99
9.3.9 TDMA Channel (TC). 99
9.3.10 Protect Flag (PF) . 99
9.3.11 Full Link Control Opcode (FLCO) . 99
9.3.12 Short Link Control Opcode (SLCO) . 99
9.3.13 TACT parity. 100
9.3.14 RC parity . 100
9.3.15 Group or Individual (G/I) . 100
9.3.16 Response Requested (A) . 100
9.3.17 Data Packet Format (DPF) . 100
9.3.17A Header Compression (HC) . 101
9.3.18 SAP identifier (SAP) . 101
ETSI

---------------------- Page: 5 ----------------------
6 ETSI TS 102 361-1 V2.3.1 (2013-07)
9.3.19 Logical Link ID (LLID) . 101
9.3.20 Full message flag (F) . 101
9.3.21 Blocks to Follow (BF) . 102
9.3.22 Pad Octet Count (POC) . 102
9.3.23 Re-Synchronize Flag (S) .
...