ETSI TS 102 490 V1.8.1 (2014-06)

ETSI TS 102 490 V1.8.1 (2014-06)






Technical Specification
Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Peer-to-Peer Digital Private Mobile Radio using FDMA
with a channel spacing of 6,25 kHz with e.r.p. of up to 500 mW

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2 ETSI TS 102 490 V1.8.1 (2014-06)



Reference
RTS/ERM-TGDMR-320
Keywords
air interface, digital, FDMA, PMR, protocol, radio
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3 ETSI TS 102 490 V1.8.1 (2014-06)
Contents
Intellectual Property Rights . 6
Foreword . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 7
3 Definitions, symbols and abbreviations . 8
3.1 Definitions . 8
3.2 Symbols . 9
3.3 Abbreviations . 9
4 Overview . 10
4.1 Protocol architecture. 11
4.1.1 Air Interface Physical Layer (layer 1). 12
4.1.2 Air Interface Data Link Layer (layer 2) . 12
4.1.3 Air Interface Call Control Layer (layer 3) . 12
4.2 FDMA Structure . 13
4.2.1 Overview of the transmission structure . 13
4.2.2 Transmission format . 13
4.2.3 Transmission sequences . 14
5 Frame coding . 16
5.1 Superframe . 16
5.2 Header frame . 17
5.3 End frame . 17
5.4 Packet data header . 18
5.5 ACK frame . 18
5.6 Frame numbering . 19
5.7 Communication mode . 19
5.8 Communication format . 19
5.9 SLD format . 19
5.9.1 Slow data in the voice superframe . 19
5.9.2 Slow data field use with Type 1 or 2 data . 20
5.10 Call information . 21
5.10.1 Call Information for powersave . 21
5.10.2 Call Information for Types 1 and 2 data . 21
5.10.3 Call Information for Type 3 (packet) data . 22
5.10.4 Call Information for system transactions . 23
5.10.5 Call Information for acknowledgements . 23
5.11 Header type . 23
5.12 End type . 24
5.13 ARQ . 24
5.14 Tx Wait . 24
5.15 Status . 25
5.16 Version [V] . 25
6 Synchronization . 25
6.1 Frame synchronization . 25
6.1.1 FS1 . 25
6.1.2 FS2 . 25
6.1.3 FS3 . 26
6.1.4 FS4 . 26
6.1.5 Channel code . 26
6.1.6 Preamble . 27
7 Interleaving and FEC coding . 28
ETSI

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4 ETSI TS 102 490 V1.8.1 (2014-06)
7.1 Di-bit coding . 28
7.2 CRC addition . 28
7.3 Hamming code . 28
7.4 Scrambling . 28
7.5 Interleaving. 29
7.6 FEC coding of CCH (superframe) . 30
7.7 FEC coding of HI (header information) . 30
7.8 FEC coding of END information . 31
8 Bearer services, tele-services and supplementary services . 31
8.1 Initial mode . 31
8.1.1 Initial addressing . 31
8.1.1.1 Common ID. 31
8.1.1.2 Fixed part of address . 32
8.1.2 ISF channel codes . 32
8.2 Configured mode . 32
8.2.1 Call types . 33
8.2.1.1 Individual call . 33
8.2.1.2 Group call . 33
8.2.2 Addressing . 33
8.2.3 CSF channel codes . 33
8.3 Packet data. 33
8.3.1 Format . 33
8.3.2 Receiving party . 34
8.3.3 Packet frame coding. 34
8.3.4 Data frame size . 35
8.3.5 Valid data length . 35
8.3.6 Data checksum . 35
9 Channel coding process . 37
9.1 Voice superframe . 38
9.2 Type 1 data superframe . 41
9.3 Type 2 Data superframe . 43
9.4 Type 3 (Packet) Data frame . 44
9.5 Headers . 46
9.6 End frames. 47
10 Channel access . 48
10.1 Listen Before Transmit (LBT) . 48
10.2 Hang time messages and timers . 49
10.2.1 Definition . 49
10.2.2 Action by receiving stations. 49
10.2.3 Break-in requests . 49
10.3 Call duration timers . 49
10.4 Transmit admit criteria . 49
10.4.1 General admit criteria . 49
10.4.2 ISF admit criteria . 50
10.4.3 CSF admit criteria . 50
10.5 Transmission re-tries . 50
10.6 Channel access timers and constants . 50
10.6.1 Timers . 50
10.6.2 Constants . 51
11 Powersave . 51
11.1 Transmitted format . 51
11.2 Receive format . 52
12 Physical Layer . 52
12.1 General parameters . 52
12.1.1 Frequency range . 52
12.1.2 RF carrier bandwidth . 52
12.1.3 Transmit frequency error . 52
12.1.4 Time base clock drift error . 52
12.2 Modulation . 52
ETSI

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5 ETSI TS 102 490 V1.8.1 (2014-06)
12.2.1 Symbols . 52
12.2.2 4FSK generation . 53
12.2.2.1 Deviation index . 53
12.2.2.2 Square root raised cosine filter . 54
12.2.2.3 4FSK Modulator . 55
Annex A (normative): Standard User Interface for CSF radios . 56
A.1 Numbering and dialling plan . 56
A.1.1 Introduction to the numbering and dialling plan . 56
A.2 Subscriber mapping . 57
A.2.1 User Interface - Air Interface . 57
A.2.1.1 Mapping for MS address space . 58
A.2.1.1.1 The concept of the wildcard character . 58
A.2.1.1.2 The concept of stored parameters . 58
A.2.1.1.3 The concept of ad-hoc arrangement . 58
A.2.1.1.4 The rules for the sender . 58
A.2.1.1.5 The rules for the recipient . 59
A.2.1.1.6 Mapping of dialled strings to the AI address space . 59
A.2.1.1.6.1 Mapping of numeric dialled strings to the AI address space . 59
A.2.2 Addresses . 60
A.2.3 Conversion rules . 60
A.2.3.1 MS addresses . 60
A.2.3.2 Limiting the length of the destination address . 61
A.2.3.3 All talkgroup address . 61
A.3 User dialling plan . 61
A.3.1 User numbering . 61
A.3.1.1 Dialling method . 61
A.3.1.2 Call Type determination . 61
A.3.1.3 Call modifier strings . 62
A.3.2 Dialled digits to address mapping . 62
A.3.3 Storage requirements . 62
A.3.3.1 MS individual address . 62
A.3.3.2 Dialled Talkgroups . 63
A.3.3.3 All MSs . 63
A.3.3.4 Non-dialable numbers . 63
A.3.3.5 Talkgroup recognition. 63
A.3.3.5.1 All numeric talkgroups . 63
A.3.3.5.2 Talkgroups defined by wildcards . 64
A.3.3.5.3 MS receives a talkgroup call . 64
A.3.4 Dialling procedures . 64
A.3.4.1 MS calls . 64
A.3.4.1.1 Seven digit dialling . 64
A.3.4.1.2 Abbreviated dialling . 64
A.3.4.1.3 Masked dialling . 65
A.3.4.1.4 Dialling with numbers and wildcards . 65
A.3.4.2 Call modifiers . 66
A.3.4.2.1 Broadcast call . 66
A.3.4.2.2 Status call . 66
A.3.4.2.3 Force talkgroup service . 66
A.3.4.3 Call set-up abandon or call complete . 66
History . 67

ETSI

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6 ETSI TS 102 490 V1.8.1 (2014-06)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://ipr.etsi.org).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Fore
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