ETSI TR 102 398 V1.1.2 (2008-05)

Electromagnetic compatibility and Radio spectrum Matters (ERM); Digital Mobile Radio (DMR) General System Design

RTR/ERM-TGDMR-275

General Information

• Status: Published
• Publication Date: 20-May-2008
• Technical Committee: ERM TGDMR - Digital Mobile Radio
• Current Stage: 12 - Completion
• Due Date: 08-Apr-2008
• Completion Date: 21-May-2008

Standards Content (Sample)

ETSI TR 102 398 V1.1.2 (2008-05)
Technical Report


Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Digital Mobile Radio (DMR)
General System Design

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2 ETSI TR 102 398 V1.1.2 (2008-05)



Reference
RTR/ERM-TGDMR-275
Keywords
digital, PMR, radio
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3 ETSI TR 102 398 V1.1.2 (2008-05)
Contents
Intellectual Property Rights.6
Foreword.6
Introduction .6
1 Scope.7
2 References.7
2.1 Normative references.7
2.2 Informative references.8
3 Definitions, symbols and abbreviations .9
3.1 Definitions.9
3.2 Symbols.11
3.3 Abbreviations.11
4 Overview of DMR.12
5 Over-the-air protocol summary .14
5.1 Over-the-air protocol description .15
5.1.1 Signalling advantages.16
5.1.2 6,25 kHz equivalence.17
5.1.3 The vocoder.17
5.1.4 Radiated power and range.17
5.2 Frequency considerations.18
5.3 DMR Burst and frame structure .21
5.4 Frame synchronization.22
5.5 Basic channel types .24
5.5.1 Traffic channel with CACH.24
5.5.2 Traffic channel with guard time.24
5.5.3 Bi-directional channel.25
5.5.4 Direct Mode with continuous transmission .26
5.6 Channel access.26
6 DMR services.27
6.1 DMR services overview .28
6.2 Description of voice services.29
6.2.1 Individual call service.29
6.2.2 Group call service .29
6.2.3 Unaddressed voice call service .29
6.2.4 Open Voice Channel Mode service .29
6.2.5 All Call Voice service.30
6.2.6 Broadcast Call Voice service.30
6.3 Description of data services.30
6.3.1 IP over PDP.30
6.3.2 Short Data Services over PDP .31
6.3.2.1 Short Data over PDP - Status/Precoded .31
6.3.2.2 Short Data over PDP - Raw Data.31
6.3.2.3 Short Data over PDP - Defined Data .31
7 DMR data services .31
7.1 The Packet Data Protocol (PDP) .31
7.2 Internet Protocol over PDP.32
7.2.1 IPv6 transport over PDP .33
7.3 Short Data Services over PDP.34
8 Trunking (DMR tier III).35
8.1 Introduction.35
8.2 Feature set.36
8.3 Single Site/Wide Area .37
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4 ETSI TR 102 398 V1.1.2 (2008-05)
8.4 MS location and registration .38
8.5 Power Save.38
8.6 Security features.39
8.7 MS management from the system .39
8.8 Physical link organization .39
8.8.1 Radio frequency allocation .39
8.8.2 Colour Code.39
8.9 Unified Data Transport mechanism (UDT).40
8.10 Tier III frame structure .40
8.10.1 TSCC structure.40
8.10.2 Payload channel structure.41
8.10.3 Random access.41
8.11 Tier III user services.42
8.11.1 MS initiating calls.42
8.11.2 MS receiving calls .42
8.11.2.1 MS receiving individual calls.42
8.11.2.2 MS receiving calls to talkgroups.43
8.11.3 Some Examples of Tier III calls .43
8.11.3.1 An individual MS/MS voice call example .43
8.11.3.2 An MS calls a talkgroup example .44
8.11.3.3 A Call to the PSTN (PABX) example.44
8.11.3.4 A short data call example.45
8.12 The use of the CACH .45
8.12.1 System identity code subset.46
8.12.2 Reg bit.46
8.12.3 Common Slot Counter .46
9 Numbering and dialling plan.46
9.1 Abbreviated dialling.48
9.2 The concept of the wildcard character.48
9.3 Gateway calls.49
9.4 Call modifiers.49
10 Network design and management .49
10.1 General issues for DMR tier III networks .49
10.2 Network design process.50
10.2.1 Performance analysis.50
10.2.1.1 Grade of service .50
10.2.1.2 Channel hold time .50
10.2.1.3 Performance results.50
10.2.2 Traffic estimate.51
10.2.3 Network radio environment .51
10.3 Network management.52
10.4 Features.52
10.5 General recommendations (for all DMR tiers).53
10.6 Using network management as a tool (all DMR tiers) .53
10.7 Network management functions (all DMR tiers) .54
Annex A: Power save for DMR tier III systems.55
A.1 Wake up based power save .55
A.1.1 Introduction.55
A.1.2 Expected improvement from power save .57
A.1.2.1 Analysis of voice and packet data.58
A.1.2.2 Analysis of short data .58
A.2 Synchronized power save operation.59
A.2.1 Use of the timers .60
A.2.2 Power save for a single Talkgroup .61
A.2.3 Power save for multiple Talkgroups.61
Annex B: DMR tier III channel access.62
B.1 Withdrawing slots.62
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5 ETSI TR 102 398 V1.1.2 (2008-05)
B.2 Maintaining optimum throughput .63
B.2.1 Mask and service function.63
B.2.2 Random backoff.63
B.3 Characteristics of DMR tier III random access .64
Annex C: DMR protocol architecture.67
C.1 Introduction.67
C.1.1 Air Interface physical layer (layer 1).67
C.1.2 Air Interface Data Link Layer (layer 2).68
C.1.3 Air Interface Call Control Layer (layer 3).68
History .69

ETSI

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6 ETSI TR 102 398 V1.1.2 (2008-05)
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://webapp.etsi.org/IPR/home.asp).
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.
Foreword
This Technical Report (TR) has been produced by ETSI Technical Committee Electromagnetic compatibility and Radio
spectrum Matters (ERM).
Introduction
The present document has been produced to provide an introduction to DMR for potential system purchasers, network
operators and service users.
It is in relation to multi-part TS 102 361 [1] to [4] covering the technical requirements for Digital Mobile Radio (DMR),
as identified below :
Part 1: "DMR Air Interface (AI) protocol";
Part 2: "DMR voice and generic services and facilities";
Part 3: "DMR Data protocol";
Part 4: "DMR trunking protocol".
It provides an overview, a description on the DMR services and facilities, technical background and radio aspects,
protocol and service performance, and guidance on numbering and addressing.
It should be understood that, as in all standard setting activities, there is an inherent conflict between the wish to have as
broad a standard as possible and at the same time wanting to have as much of that broad standard available and
implemented right from the beginning. Potential system purchasers, network operators and service users should make
sure they influence the suppliers to have their required functionality available when they need it.
Equipment manufacturers will use the broad flexibility provided within the standard to develop and implement systems
in various ways, and still be conforming according to the standard. This broad availability of systems, each optimized
around certain features and functionalities, needs to be carefully analysed by a network operator and system user to find
the supplier with a system suited best for their needs.
Clause 5 provides an overview of the DMR over-the-air protocol.
Information about DMR services is given in clause 6. In addition, clause 7 contains a summary of the DMR data
services.
Information on DMR trunking is in clause 8 as well as annex A (power save) and annex B (channel access and
throughput).
A short introduction to numbering and addressing is in clause 9.
Information on network design and management is in clause 10.
ETSI

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7 ETSI TR 102 398 V1.1.2 (2008-05)
1 Scope
The present document is written as a "Read-me-first" manual or "Getting started with DMR". It is not intended to be a
complete guide to the DMR technical specifications. If any conflict is found between the present document and the
clauses in the DMR specifications then the technical specifications in TS 102 361 (all parts) [1] to [4] take precedence.
The aims of the present document are many, for example:
1) to provide the reader with sufficient knowledge to engage in qualified discussions with the equipment and
service suppliers;
2) to expose the reader to the specific language and technical terminology used in the DMR specifications;
3) to enable the reader to understand the flexibility in system design, system network topography, system
availability and various modes of operation;
4) information on radio aspects and network design and management is given.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the
purposes of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
For online referenced documents, information sufficient to identify and locate the source shall be provided. Preferably,
the primary source of the referenced document should be cited, in order to ensure traceability. Furthermore, the
reference should, as far as possible, remain valid for the expected life of the document. The reference shall include the
method of access to the referenced document and the full network address, with the same punctuation and use of upper
case and lower case letters.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
Not applicable.
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8 ETSI TR 102 398 V1.1.2 (2008-05)
2.2 Informative references
The following referenced documents are not essential to the use of the present document but they assist the user with
regard to a particular subject area. For non-specific references, the latest version of the referenced document (including
any amendments) applies.
[1] ETSI TS 102 361-1: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Digital
Mobile Radio (DMR) Systems; Part 1: DMR Air Interface (AI) protocol".
[2] ETSI TS 102 361-2: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Digital
Mobile Radio (DMR) Systems; Part 2: DMR voice and generic services and facilities".
[3] ETSI TS 102 361-3: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Digital
Mobile Radio (DMR) Systems; Part 3: DMR Data protocol".
[4] ETSI TS 102 361-4: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Digital
Mobile Radio (DMR) Systems; Part 4: DMR trunking protocol".
[5] ETSI EN 300 113-2: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Land
mobile service; Radio equipment intended for the transmission of data (and/or speech) using
constant or non-constant envelope modulation and having an antenna connector; Part 2:
Harmonized EN covering essential requirements of article 3.2 of the R&TTE Directive".
[6] ETSI EN 300 390-2: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Land
mobile service; Radio equipment intended for the transmission of data (and speech) and using an
integral antenna; Part 2: Harmonized EN covering essential requirements under article 3.2 of the
R&TTE Directive".
[7] CEPT Recommendation T/R 25-08: "Planning criteria and coordination of frequencies in the Land
Mobile Service in the range 29.7-921 MHz".
[8] CEPT ERC Report 25: "The European table of frequency allocations and utilizations covering the
frequency range 9 kHz to 275 GHz".
[9] MPT1318: "Engineering Memorandum, Trunked Systems in the Land Mobile Service". February
1986, United Kingdom Department of Trade and Industry.
[10] CEPT ECC/DEC/(05)12: "ECC Decision of 28 October 2005 on harmonized frequencies,
technical characteristics, exemption from individual licensing and free carriage and use of digital
PMR 446 applications operating in the frequency band 446,1-446,2 MHz".
[11] Draft CEPT ECC Decision (06)CC (WGFM, Cavtat, April 2006): "ECC Decision on the
availability of frequency bands for the introduction of Narrow Band Digital Land Mobile
PMR/PAMR in the 80 MHz, 160 MHz and 400 MHz bands".
[12] IEC 61162-1: "Maritime navigation and radiocommunications equipment and systems - Digital
Interfaces - Part 1: Single talker and multiple listeners".
[13] IETF RFC 2529: "Transmission of IPv6 over IPv4 Domains without Explicit Tunnels".
[14] IETF RFC 3056: "Connection of IPv6 Domains via IPv4 Clouds".
[15] IETF RFC 3142: "An IPv6-to-IPv4 Transport Relay Translator".
[16] IETF RFC 4213: "Basic Transition Mechanisms for IPv6 Hosts and Routers".
[17] "Unicode: technical standards". www.unicode.org.
[18] ISO 8859 (parts 1 to 16): "Information technology - 8-bit single-byte coded graphic character
sets".
[19] IETF RFC 791: "Internet Protocol".
ETSI

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