ETSI TR 102 884 V1.3.1 (2018-11)

ETSI TR 102 884 V1.3.1 (2018-11)






TECHNICAL REPORT
Electromagnetic compatibility
and Radio spectrum Matters (ERM);
digital Private Mobile Radio (dPMR)
General System Design

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2 ETSI TR 102 884 V1.3.1 (2018-11)



Reference
RTR/ERM-TGDMR-376
Keywords
dPMR, PMR, radio
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3 ETSI TR 102 884 V1.3.1 (2018-11)
Contents
Intellectual Property Rights . 7
Foreword . 7
Modal verbs terminology . 7
Introduction . 7
1 Scope . 9
1.0 General . 9
1.1 Scope of ETSI TS 102 490 . 9
1.2 Scope of ETSI TS 102 658 . 9
2 References . 10
2.1 Normative references . 10
2.2 Informative references . 10
3 Definition of terms, symbols and abbreviations . 11
3.1 Terms . 11
3.2 Symbols . 13
3.3 Abbreviations . 13
4 Overview of dPMR . 14
4.0 General . 14
4.1 Licence Exempt dPMR . 15
4.2 Licensed dPMR . 15
4.2.0 General . 15
4.2.1 Licensed dPMR Mode 1 . 15
4.2.2 Licensed dPMR Mode 2 . 15
4.2.3 Licensed dPMR Mode 3 . 16
4.3 Services and Facilities . 16
4.4 Interoperability . 17
4.5 Frequency Considerations . 17
4.5.0 General . 17
4.5.1 dPMR systems compliant with ETSI TS 102 490 . 17
4.5.2 dPMR systems compliant with ETSI TS 102 658 . 18
4.5.2.0 General . 18
4.5.2.1 6,25 kHz Channel Assignment . 18
4.5.2.2 12,5 kHz Channel Assignment . 18
4.6 Protocol architecture. 19
4.6.1 Architectural Configurations . 19
4.6.1.0 General . 19
4.6.1.1 Peer-to-Peer (Licence exempt) . 19
4.6.1.1A Peer-to-Peer Direct Network (Licensed Mode 1) . 19
4.6.1.2 Centralized Repeater Network (Licensed Mode 2) . 20
4.6.1.3 Managed Centralized Repeater Network (Licensed Mode 3) . 21
4.6.1.3.0 General . 21
4.6.1.3.1 Beacon Channel . 21
4.6.1.3.2 Traffic Channel . 21
4.6.1.4 Co-channel BS networks . 21
4.6.2 dPMR services overview . 22
4.6.2.0 General . 22
4.6.2.1 Call types . 23
4.6.2.1.1 Parties Involved in the Call . 23
4.7 Channel Codes . 24
4.7.0 General . 24
4.7.1 Channel Codes for ETSI TS 102 490. 24
4.7.2 Channel Codes for ETSI TS 102 658. 24
4.7.2.0 General . 24
4.7.2.1 Channel Code for Mode 1 and Mode 2 Systems . 26
4.7.2.2 Channel Code for Mode 3 Systems . 26
ETSI

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4 ETSI TR 102 884 V1.3.1 (2018-11)
4.7.2.2.0 General . 26
4.7.2.2.1 Channel Code Determined by Frequency . 26
4.7.2.2.2 Channel Code Determined by Frequency and System Identity Code . 26
4.8 Network Identifier (System Identity Code) . 26
4.9 Addressing . 27
4.10 Standard User Interface . 27
4.10.0 General . 27
4.10.1 The concept of the wildcard character . 28
4.11 Unified Data Transport Mechanism . 28
5 Channel Access Mechanisms . 29
5.0 General . 29
5.1 Random Access (Mode 1, Mode 2) . 29
5.2 Regulated Random Access (Mode 3) . 29
5.3 Listen Before Transmit (LBT) . 29
5.4 Hang time messages and timers . 29
5.4.1 Definition . 29
5.4.2 Action by receiving stations. 30
5.4.3 Call duration timers . 30
5.5 Transmit admit criteria . 30
5.5.1 General admit criteria . 30
5.5.1.0 General . 30
5.5.1.1 ISF admit criteria . 30
5.5.1.2 CSF admit criteria . 30
5.5.1.3 Random Access (Licence exempt, Mode 1, Mode 2) . 31
5.5.1.4 Regulated Random Access (Mode 3) . 31
5.5.1.5 Polling . 31
5.5.1.6 Beacon Signal . 31
5.6 FDMA Structure . 32
5.6.0 General . 32
5.6.1 Overview of transmission structure . 32
5.6.2 Transmission format . 32
5.6.2.0 General . 32
5.6.2.1 Traffic Channel Message Frame . 32
5.6.2.2 Traffic Channel Payload Frame . 33
5.6.2.2.0 General . 33
5.6.2.2.1 Traffic Channel Superframe . 33
5.6.2.2.2 Traffic Channel Packet Data Header Frame . 33
5.6.2.3 Traffic Channel End Frame . 33
5.6.2.4 Beacon SYScast Frame . 34
5.6.2.5 Appended Data Frame . 34
5.6.3 Transmission sequences . 34
5.6.3.1 Traffic Channel Voice or data payload item transmission . 34
5.6.3.2 Traffic Channel Call set up, service request, etc. . 35
5.6.3.3 Traffic Channel Acknowledgement . 35
5.6.3.4 Traffic Channel Status request acknowledgements . 35
5.6.3.5 Traffic Channel Disconnection . 35
5.6.3.6 Traffic Channel Preservation Message. 35
5.6.3.7 Mode 3 Beacon Channel . 36
6 Examples of Message Exchange for Calls . 36
6.1 Parties Involved in the Call . 36
6.1.1 Individual call . 36
6.1.2 Group call . 36
6.2 Calls . 36
6.2.1 Mode 1 Call Exchange . 36
6.2.1.1 Mode 1 Voice Call . 36
6.2.1.2 Mode 1 Data Call . 38
6.2.2 Mode 2 Call Exchange . 39
6.2.3 Mode 3 Operation . 40
6.2.4 Packet data . 42
6.2.4.1 Format . 42
ETSI

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5 ETSI TR 102 884 V1.3.1 (2018-11)
6.2.4.2 Standard Packet Exchange Format . 43
7 Synchronization . 45
7.0 General . 45
7.1 Frame synchronization . 45
7.1.1 FS1 . 45
7.1.2 FS2 . 45
7.1.3 FS3 . 45
7.1.4 FS4 . 45
7.2 Synchronization Performance . 45
8 Interleaving and FEC coding . 46
8.0 General . 46
8.1 CRC addition . 46
8.2 Hamming code . 46
8.3 Scrambling . 47
8.4 Interleaving. 47
8.5 FEC coding of CCH (superframe) . 48
8.6 FEC coding of MI (message info') and HI (header info') . 48
8.7 FEC coding of END information . 48
8.8 Channel Coding Process - Example . 48
8.8.0 General . 48
8.8.1 Voice superframe . 49
8.8.2 Voice + Attached data call . 49
9 Physical Layer . 51
9.1 General parameters . 51
9.1.0 General . 51
9.1.1 Frequency range . 51
9.1.2 RF carrier bandwidth . 51
9.1.3 Transmit frequency error . 51
9.1.4 Time base clock drift error . 51
9.2 Modulation . 51
9.2.1 Symbols . 51
9.2.2 4FSK generation . 51
9.2.2.0 General . 51
9.2.2.1 Deviation index . 51
9.2.2.2 Square root raised cosine filter . 52
9.2.2.3 4FSK Modulator . 53
9.3 Channel Access Transmitter Ramp Timing and Profile . 53
9.3.1 Transmitter Ramp Timing . 53
9.3.2 Transmit Ramp Profile . 54
Annex A: Guidelines for System Building . 56
A.0 General . 56
A.1 Synchronization patterns and Channel Codes . 56
A.2 Network design and management . 56
A.2.0 General . 56
A.2.1 General recommendations (for all dPMR modes) . 57
A.2.2 Using network management as a tool (all dPMR modes) . 57
A.2.3 Network management functions (all dPMR modes) . 58
A.2.4 General issues for dPMR mode 3 networks . 58
A.2.5 Network design process . 59
A.2.5.1 Performance analysis . 59
A.2.5.1.0 General . 59
A.2.5.1.1 Grade of service . 59
A.2.5.1.2 Channel hold time . 59
A.2.5.1.3 Performance results . 59
A.2.5.2 Traffic estimate . 60
A.2.6 Network radio environment . 60
A.2.7 Network management .
...