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DMR 协议 part1
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Electromagnetic compatibility and Radio spectrum Matters (ERM); Digital Mobile Radio (DMR) Systems; Part 1: DMR Air Interface (AI) protocol
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ETSI TS 102 361-1 V1.4.5 (2007-12)
Technical Specification
Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Digital Mobile Radio (DMR) Systems;
Part 1: DMR Air Interface (AI) protocol
ETSI
ETSI TS 102 361
-
1 V1.4.5 (2007
-
12)
2
Reference
RTS/ERM-TGDMR-270-1
Keywords
air interface, digital, PMR, protocol, radio
ETSI
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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 2007.
All rights reserved.
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ETSI
ETSI TS 102 361
-
1 V1.4.5 (2007
-
12)
3
Contents
Intellectual Property Rights................................................................................................................................8
Foreword.............................................................................................................................................................8
1 Scope........................................................................................................................................................9
2 References................................................................................................................................................9
2.1 Normative 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.........................................................................................................................................15
4.1.1 Air Interface Physical Layer (layer 1).........................................................................................................16
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.....................................................................................................................................17
4.2.1 Overview of burst and channel structure ....................................................................................................17
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
4.5 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 ...............................................................................................................................................27
5.1.2.1 Voice superframe ..................................................................................................................................27
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...........................................................................................................................29
5.1.3.2 Dual slot data timing.............................................................................................................................29
5.1.4 Traffic timing..............................................................................................................................................30
5.1.4.1 BS timing ..............................................................................................................................................30
5.1.4.2 Single frequency BS timing ..................................................................................................................31
5.1.4.3 Direct mode timing ...............................................................................................................................31
5.1.4.4 Time Division Duplex (TDD) timing....................................................................................................32
5.1.4.5 Continuous transmission mode .............................................................................................................32
5.1.5 Reverse Channel (RC) timing.....................................................................................................................33
5.1.5.1 Embedded outbound Reverse Channel (RC).........................................................................................33
5.1.5.2 Dedicated outbound Reverse Channel (RC) .........................................................................................34
5.1.5.3 Standalone inbound Reverse Channel (RC)..........................................................................................34
5.1.5.4 Direct mode Reverse Channel (RC)......................................................................................................35
5.2 Channel access .................................................................................................................................................35
5.2.1 Basic channel access rules ..........................................................................................................................36
5.2.1.1 Types of channel activity ......................................................................................................................36
ETSI
ETSI TS 102 361
-
1 V1.4.5 (2007
-
12)
4
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
6 Layer 2 burst format...............................................................................................................................51
6.1 Vocoder socket.................................................................................................................................................52
6.2 Data and control ...............................................................................................................................................53
6.3 Common Announcement Channel burst...........................................................................................................54
6.4 Reverse Channel...............................................................................................................................................55
6.4.1 Standalone inbound Reverse Channel burst................................................................................................55
6.4.2 Outbound reverse channel (RC) burst.........................................................................................................56
7 DMR signalling......................................................................................................................................56
7.1 Link Control message structure........................................................................................................................56
7.1.1 Voice LC header.........................................................................................................................................57
7.1.2 Terminator with LC ....................................................................................................................................59
7.1.3 Embedded signalling...................................................................................................................................59
7.1.3.1 Outbound channel .................................................................................................................................60
7.1.3.2 Inbound channel....................................................................................................................................61
7.1.4 Short Link Control in CACH......................................................................................................................61
7.2 Control Signalling BlocK (CSBK) message structure......................................................................................62
7.2.1 Control Signalling BlocK (CSBK) .............................................................................................................63
7.3 Idle message.....................................................................................................................................................64
7.4 Multi Block Control (MBC) message structure................................................................................................64
7.4.1 Multi Block Control (MBC) .......................................................................................................................66
8 DMR Packet Data Protocol (PDP).........................................................................................................67
8.1 Internet Protocol...............................................................................................................................................67
8.2 Datagram fragmentation and re-assembly........................................................................................................68
8.2.1 Header block structure................................................................................................................................69
8.2.1.1 Unconfirmed data Header .....................................................................................................................70
8.2.1.2 Confirmed data header..........................................................................................................................71
8.2.1.3 Response data header............................................................................................................................71
8.2.1.4 Proprietary data header .........................................................................................................................71
8.2.1.5 Status/precoded short data header.........................................................................................................72
8.2.1.6 Raw short data header...........................................................................................................................73
8.2.1.7 Defined short data header......................................................................................................................73
8.2.1.8 Unified Data Transport (UDT) data header...........................................................................................74
8.2.2 Data block structure....................................................................................................................................74
8.2.2.1 Unconfirmed data block structure.........................................................................................................74
8.2.2.2 Confirmed data block structure.............................................................................................................77
8.2.2.3 Response packet format ........................................................................................................................80
ETSI
ETSI TS 102 361
-
1 V1.4.5 (2007
-
12)
5
8.2.2.4 Hang time for response packet..............................................................................................................82
8.2.2.5 Unified Data Transport (UDT) last data block structure.......................................................................82
9 Layer 2 PDU description........................................................................................................................83
9.1 PDUs for voice bursts, general data bursts and the CACH ..............................................................................84
9.1.1 Synchronization (SYNC) PDU...................................................................................................................84
9.1.2 Embedded signalling (EMB) PDU .............................................................................................................84
9.1.3 Slot Type (SLOT) PDU..............................................................................................................................85
9.1.4 TACT PDU.................................................................................................................................................85
9.1.5 Reverse Channel (RC) PDU .......................................................................................................................85
9.1.6 Full Link Control (FULL LC) PDU............................................................................................................85
9.1.7 Short Link Control (SHORT LC) PDU ......................................................................................................86
9.1.8 Control Signalling Block (CSBK) PDU .....................................................................................................86
9.1.9 Pseudo Random Fill Bit (PR FILL) PDU...................................................................................................86
9.2 Data related PDU description...........................................................................................................................86
9.2.1 Confirmed packet Header (C_HEAD) PDU...............................................................................................87
9.2.2 Rate ¾ coded packet Data (R_3_4_DATA) PDU ......................................................................................87
9.2.3 Rate ¾ coded Last Data block (R_3_4_LDATA) PDU..............................................................................87
9.2.4 Confirmed Response packet Header (C_RHEAD) PDU............................................................................88
9.2.5 Confirmed Response packet Data (C_RDATA) PDU................................................................................88
9.2.6 Unconfirmed data packet Header (U_HEAD) PDU...................................................................................89
9.2.7 Rate ½ coded packet Data (R_1_2_DATA) PDU ......................................................................................89
9.2.8 Rate ½ coded Last Data block (R_1_2_LDATA) PDU..............................................................................90
9.2.9 Proprietary Header (P_HEAD) PDU..........................................................................................................90
9.2.10 Status/Precoded short data packet Header (SP_HEAD) PDU ....................................................................91
9.2.11 Raw short data packet Header (R_HEAD) PDU ........................................................................................91
9.2.12 Defined Data short data packet Header (DD_HEAD) PDU .......................................................................92
9.2.13 Unified Data Transport Header (UDT_HEAD) PDU.................................................................................92
9.2.14 Unified Data Transport Last Data block (UDT_LDATA) PDU.................................................................92
9.2.15 Rate 1 coded packet Data (R_1_DATA) PDU ...........................................................................................93
9.2.16 Rate 1 coded Last Data block (R_1_LDATA) PDU...................................................................................93
9.3 Layer 2 information element coding ................................................................................................................93
9.3.1 Colour Code (CC).......................................................................................................................................94
9.3.2 Privacy Indicator (PI)..................................................................................................................................94
9.3.3 LC Start/Stop (LCSS).................................................................................................................................94
9.3.4 EMB parity .................................................................................................................................................94
9.3.5 Feature set ID (FID)....................................................................................................................................95
9.3.6 Data Type....................................................................................................................................................95
9.3.7 Slot Type parity ..........................................................................................................................................95
9.3.8 Access Type (AT).......................................................................................................................................96
9.3.9 TDMA Channel (TC)..................................................................................................................................96
9.3.10 Protect Flag (PF).........................................................................................................................................96
9.3.11 Full Link Control Opcode (FLCO).............................................................................................................96
9.3.12 Short Link Control Opcode (SLCO)...........................................................................................................96
9.3.13 TACT parity................................................................................................................................................97
9.3.14 RC parity.....................................................................................................................................................97
9.3.15 Group or Individual (G/I) ...........................................................................................................................97
9.3.16 Response Requested (A).............................................................................................................................97
9.3.17 Data Packet Format (DPF)..........................................................................................................................97
9.3.17A Header Compression (HC)..........................................................................................................................98
9.3.18 SAP identifier (SAP) ..................................................................................................................................98
9.3.19 Logical Link ID (LLID)..............................................................................................................................98
9.3.20 Full message flag (F) ..................................................................................................................................98
9.3.21 Blocks to Follow (BF) ................................................................................................................................98
9.3.22 Pad Octet Count (POC)...............................................................................................................................99
9.3.23 Re-Synchronize Flag (S).............................................................................................................................99
9.3.24 Send sequence number (N(S)) ....................................................................................................................99
9.3.25 Fragment Sequence Number (FSN)..........................................................................................................100
9.3.26 Data Block Serial Number (DBSN)..........................................................................................................100
9.3.27 Data block CRC (CRC-9).........................................................................................................................100
9.3.28 Class (Class) .............................................................................................................................................101
9.3.29 Type (Type)..............................................................................................................................................101
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