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

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

RTR/ERM-TGDMR-376

General Information

• Status: Published
• Publication Date: 25-Nov-2018
• Technical Committee: ERM TGDMR - Digital Mobile Radio
• Current Stage: 12 - Completion
• Due Date: 05-Dec-2018
• Completion Date: 26-Nov-2018

Standards Content (Sample)

TECHNICAL REPORT
Electromagnetic compatibility
and Radio spectrum Matters (ERM);
digital Private Mobile Radio (dPMR)
General System Design
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
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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
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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 . 61
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6 ETSI TR 102 884 V1.3.1 (2018-11)
A.2.8 Features . 61
A.3 Power save for dPMR mode 3 systems . 62
A.3.0 General . 62
A.3.1 Wake up based power save for mode 3 systems . 62
A.3.1.1 Introduction. 62
A.3.1.2 Power Save Mechanism . 63
A.3.1.3 Expected improvement from power save. 65
A.3.1.3.0 General . 65
A.3.1.3.1 Analysis of voice and packet data . 66
A.3.1.3.2 Analysis of short data . 66
A.3.1.3.3 Case study . 67
Annex B: Bibliography . 68
History . 69

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7 ETSI TR 102 884 V1.3.1 (2018-11)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables 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 (https://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.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This Technical Report (TR) has been produced by ETSI Technical Committee Electromagnetic compatibility and Radio
spectrum Matters (ERM).
Modal verbs terminology
In the present document "should", "should not", "may", "need not", "will", "will not", "can" and "cannot" are to be
interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
Introduction
The present document has been produced to provide an introduction to dPMR for potential system purchasers, network
operators and service users.
It is in relation to ETSI TS 102 490 [i.1] and ETSI TS 102 658 [i.2] covering the technical requirements for digital
Private Mobile Radio (dPMR), as identified below:
• ETSI TS 102 490 [i.1].
• ETSI TS 102 658 [i.2].
It provides an overview, a description of the dPMR 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.
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8 ETSI TR 102 884 V1.3.1 (2018-11)
Equipment manufacturers will use the broad flexibility provided within the present document to develop and implement
systems in various ways, and still be conforming accordin to the present document. 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.
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9 ETSI TR 102 884 V1.3.1 (2018-11)
1 Scope
1.0 General
The present document covers digital Private Mobile Radio (dPMR) equipment using FDMA technology with channel
spacing of 6,25 kHz supporting voice and data applications capable of operating in the existing licensed land mobile
service frequency bands below 1 000 MHz.
The present document includes the baseband signal processing parameters of the Physical Layer (PL) and the protocol
structure at the air interface. The protocol supports different levels of functionality from peer to peer mode to managed
base station access mode: the equipment is based on FDMA with channel spacing of 6,25 kHz supporting voice and
data applications.
dPMR equipment is designed to be compliant with the appropriate harmonized standard for spectrum use, ETSI
EN 301 166-2 [i.4].
1.1 Scope of ETSI TS 102 490
ETSI TS 102 490 [i.1] covers digital private mobile radio equipment operating in peer-to- peer mode only. It covers
only handportable equipment complying with ETSI EN 301 166-2 [i.4] and having an integral antenna.
This equipment is for use:
i) In accordance with ECC/DEC/(05)12 [i.7] on harmonized frequencies, technical characteristics, exemption
from individual licensing and free carriage and use of digital PMR446 applications operating in the frequency
band 446,100 MHz to 446,200 MHz.
The equipment conforms to the technical requirements for Digital PMR 446 included in
ECC/DEC/(05)12 [i.7]. This permits operation in the frequency range 446,100 MHz to 446,200 MHz,
maximum e.r.p of 500 mW, and a maximum transmitter time-out-time of 180 seconds.
ii) In the frequency band 149,01875 MHz to 149,11875 MHz under exemption from individual licensing. This
permits a maximum e.r.p of 500 mW, and a maximum transmitter time-out-time of 180 seconds.
1.2 Scope of ETSI TS 102 658
ETSI TS 102 658 [i.2] supports different levels of functionality from peer to peer mode to managed base station access
mode:
Mode 1 Peer to peer (direct mode) operation without Base Stations or infrastructure.
Mode 2 dPMR systems incorporating one or more Base Stations for repeating or providing system gateways.
Mode 3 dPMR systems operating under a managed access mode in systems incorporating one or more Base
Stations.
All three modes of operation of the present air interface are designed to be compliant with the appropriate harmonized
standard for spectrum use, ETSI EN 301 166-2 [i.4]. A polite spectrum access protocol for sharing the physical channel
has also been specified.
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10 ETSI TR 102 884 V1.3.1 (2018-11)
2 References
2.1 Normative references
Normative references are not applicable in the present document.
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ETSI TS 102 490: "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".
[i.2] ETSI TS 102 658: "Digital Private Mobile Radio (dPMR) using FDMA with a channel spacing of
6,25 kHz".
[i.3] IEC EN 61162-1 (2008): "Maritime navigation and radio communications equipment and systems
- Digital Interfaces - Part 1: Single talker and multiple listeners".
[i.4] ETSI EN 301 166-2: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Land
Mobile Service; Radio equipment for analogue and/or digital communication (speech and/or data)
and operating on narrow band channels and having an antenna connector; Part 2: Harmonized EN
covering essential requirements of article 3.2 of the R&TTE Directive".
[i.5] CEPT Recommendation T/R 25-08: "Planning criteria and coordination of frequencies in the Land
Mobile Service in the range 29.7-921 MHz".
[i.6] CEPT ERC Report 25: "The European table of frequency allocations and utilizations covering the
frequency range 9 kHz to 275 GHz".
[i.7] 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".
[i.8] Draft CEPT ECC Decision (06)06 (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".
[i.9] ETSI TS 102 726-1: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Conformance testing for Mode 1 of the digital Private Mobile Radio (dPMRTM); Part 1: Protocol
Implementation Conformance Statement (PICS) proforma".
[i.10] ETSI TS 102 726-2: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Conformance testing for Mode 1 of the digital Private Mobile Radio (dPMR); Part 2: Test Suite
Structure and Test Purposes (TSS&TP) specification".
[i.11] ETSI TS 102 726-3: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Conformance testing for Mode 1 of the digital Private Mobile Radio (dPMRTM); Part 3:
Interoperability Test Suite Structure and Test Purposes (TSS&TP) specification".
[i.12] ETSI TS 102 587-1: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Peer-to-
Peer Digital Private Mobile Radio; Part 1: Conformance testing; Protocol Implementation
Conformance Statement (PICS) proforma".
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11 ETSI TR 102 884 V1.3.1 (2018-11)
[i.13] MPT 1318. Engineering Memorandum: "Trunked Systems in the LandMobile Radio Service"
February 1986. Revised and reprinted January 1994.
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
active_hang_time: time during which a Mode 2 BS preserves the channel for the parties involved in a call
Appended_Data: message carrying principally data that is formatted according to the present document
Base Station (BS): fixed end equipment that is used to obtain dPMR services
beacon channel: channel that carries synchronous beacon frames timed from a BS
bearer service: type of telecommunication service that provides the capability for the information transfer between user
network interfaces, involving only low layer functions (layers 1 to 3 of the OSI model)
NOTE: Confirmed Data and Unconfirmed Data are examples of bearer services.
burst: short duration RF signal that may cause interference to a dPMR transmission item
call: complete sequence of related transactions between MS
NOTE: Transactions may consist of more than one or more item containing specific call related information.
Caller Line Identity (CLI): ability to see who is calling you before answering the telephone
call_hang_time: time during which a Mode 1 or Mode 2 channel is available for an emergency pre-emption
complementary service: dPMR service that enables complementary data to be passed between MS and BS as part of
the call set-up phase of another service (such as voice)
Control plane (C-plane): part of the protocol stack dedicated to control and data services
downlink: transmission from BS to MS(s)
extended address: address of an entity that is not a native MS/BS individual/talkgroup identity
feature: attribute intrinsic to a station, e.g. MS has an address
intrinsic service: service which is inherent within a voice or data service
item: complete transmission, the conclusion of which the transmission is ended
late entry: where receiving stations that have missed the start of a transmission are able to recover all information about
the call from subsequent message frames
line connected: call whereby one end of the call is connected to the radio system that does not use the DMR Air
Interface
NOTE: Examples may be connection to the PSTN or a PABX.
logical channel: distinct data path between logical endpoints
Manufacturers ID (MID): 8 bit identifier assigned to a particular manufacturer
Mobile Station (MS): physical grouping that contains all of the mobile equipment that is used to obtain dPMR mobile
services
mode: class of operation of a dPMR system
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12 ETSI TR 102 884 V1.3.1 (2018-11)
multi-part call set-up: call set-up procedure whereby the full information to be exchanged between entities cannot be
accommodated in a single message frame
NOTE: The UDT procedure is invoked to transfer the address information using UDT signalling. UDT is also
invoked to transport complementary and user data between dPMR entities.
network personaliza
...