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DMR协议第一部分：空中接口协议
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DMR协议共分为四个部分，此文档为第一部分，即空中接口协议部分，主要描述了协议的架构，数据及突发格式等。
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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
Technical Specification
ETSI
ETSI TS 102 361
-
1 V2.3.1 (2013
-
07)
2
Reference
RTS/ERM-TGDMR-313-1
Keywords
digital, PMR
ETSI
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Important notice
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If you find errors in the present document, please send your comment to one of the following services:
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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.
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, PLUGTESTS
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, UMTS
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and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members.
3GPP
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and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and
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GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI
ETSI TS 102 361
-
1 V2.3.1 (2013
-
07)
3
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
ETSI TS 102 361
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1 V2.3.1 (2013
-
07)
4
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
ETSI
TS 102 361
-
1 V2.3.1 (2013
-
07)
5
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
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