ETSI TS 102 361-3 V1.3.1 (2017-10)

Electromagnetic compatibility and Radio spectrum Matters (ERM); Digital Mobile Radio (DMR) Systems; Part 3: DMR data protocol

RTS/ERM-TGDMR-358

General Information

• Status: Published
• Publication Date: 18-Oct-2017
• Technical Committee: ERM TGDMR - Digital Mobile Radio
• Current Stage: 12 - Completion
• Due Date: 23-Oct-2017
• Completion Date: 19-Oct-2017

Standards Content (Sample)

TECHNICAL SPECIFICATION
Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Digital Mobile Radio (DMR) Systems;
Part 3: DMR data protocol
2 ETSI TS 102 361-3 V1.3.1 (2017-10)

Reference
RTS/ERM-TGDMR-358
Keywords
air interface, data, digital, PMR, protocol, radio
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3 ETSI TS 102 361-3 V1.3.1 (2017-10)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 8
3 Definitions and abbreviations . 8
3.1 Definitions . 8
3.2 Abbreviations . 10
4 Overview . 11
4.0 Overview introduction . 11
4.1 Protocol architecture. 11
4.1.0 Protocol architecture introduction . 11
4.1.1 Air Interface Physical Layer (layer 1). 12
4.1.2 Air Interface Data Link Layer (layer 2) . 13
4.1.3 Air Interface Call Control Layer (layer 3) . 13
4.2 Overview of the DMR Packet Data Protocol (PDP) . 14
4.3 Feature interoperability . 14
5 Internet Protocol (IP) bearer service. 15
5.0 Internet Protocol (IP) bearer service introduction . 15
5.1 IP addressing . 15
5.1.1 DLL derived IP addressing . 15
5.1.2 DLL neutral IP addressing . 16
5.2 IP error messages. 17
5.3 Unconfirmed data DLL bearer service . 18
5.3.0 Unconfirmed data DLL bearer service introduction . 18
5.3.1 Unconfirmed IP Data Types/PDUs . 18
5.3.1.1 Rate ½ coded unconfirmed IP Data Types/PDUs . 18
5.3.1.2 Rate ¾ coded unconfirmed IP Data Types/PDUs . 18
5.3.1.3 Rate 1 coded unconfirmed IP Data Types/PDUs . 19
5.3.2 Unconfirmed IP data SDL . 19
5.3.3 Unconfirmed IP Data MSCs . 21
5.3.3.0 Unconfirmed IP Data MSCs introduction . 21
5.3.3.1 TX unconfirmed IP data MSC . 21
5.3.3.2 Form and send DLL data message MSC . 22
5.3.3.3 Unconfirmed Data Repeat . 23
5.4 Confirmed data DLL bearer service . 24
5.4.0 Confirmed data DLL bearer service introduction . 24
5.4.1 Confirmed IP Data Types/PDUs . 25
5.4.1.1 Rate ½ coded confirmed IP Data Types/PDUs . 25
5.4.1.2 Rate ¾ coded confirmed IP Data Types/PDUs . 25
5.4.1.2A Rate 1 coded confirmed IP Data Types/PDUs . 25
5.4.1.3 Confirmed response Data Types/PDUs . 26
5.4.2 Confirmed IP Data SDL . 26
5.4.2.0 Confirmed IP Data SDL introduction . 26
5.4.2.1 Confirmed data source SDL . 26
5.4.2.2 Confirmed data target SDL . 29
5.4.3 Confirmed data MSCs . 30
5.4.3.0 Confirmed data MSCs introduction . 30
5.4.3.1 Confirmed data source MSCs . 30
5.4.3.1.1 TX confirmed IP data MSC . 30
5.4.3.1.2 Form and send DLL data message MSC . 31
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4 ETSI TS 102 361-3 V1.3.1 (2017-10)
5.4.3.1.3 Process DLL confirmed response MSC . 31
5.4.3.2 Confirmed data target MSCs . 32
5.4.3.2.1 RX confirmed data MSC . 32
5.4.3.3 Confirmed data BS MSCs . 33
5.4.3.3.1 Confirmed data repeat MSC . 33
5.4.3.3.2 Confirmed data hangtime MSC . 34
5.4.4 Sliding window confirmed data . 35
5.5 UDP/IPv4 data . 35
5.6 UDP/IPv4 header compression. 36
5.7 Application Data over IP Bearer Service . 38
5.7.0 Application Data over IP Dearer Service introduction . 38
5.7.1 Text Messaging . 38
5.7.2 Location . 38
6 Short data bearer service . 38
6.0 Short data bearer service introduction . 38
6.1 Defined Data . 38
6.1.0 Defined Data introduction . 38
6.1.1 Defined Data Types/PDUs . 39
6.1.2 Defined data information element values . 39
6.2 Raw data . 39
6.2.0 Raw data introduction . 39
6.2.1 Raw data types/PDUs . 39
6.2.2 Raw data information element values . 39
6.3 Status/precoded data . 40
6.3.0 Status/precoded data introduction . 40
6.3.1 Status/precoded data types/PDUs . 40
6.3.2 Status/precoded data information element values . 40
6.4 Short data confirmed response . 40
7 PDU description . 41
7.0 PDU description introduction . 41
7.1 Layer 3 and 4 PDP PDUs . 42
7.1.0 Layers 3 and 4 PDP PDUs introduction. 42
7.1.1 Full Link Control (FULL LC) PDUs . 42
7.1.1.0 Full Link Control (FULL LC) PDUs introduction . 42
7.1.1.1 Terminator Data Link Control PDU . 42
7.2 UDP/IPv4 Compressed Header . 43
7.2.1 UDP Header Information Elements . 43
7.2.1.0 UDP Header Information Elements introduction . 43
7.2.1.1 UDP Source Port Number . 43
7.2.1.2 UDP Destination Port Number . 43
7.2.1.3 UDP Length . 43
7.2.1.4 UDP Checksum . 44
7.2.2 IPv4 Header Information Elements . 44
7.2.2.0 IPv4 Header Information Elements introduction . 44
7.2.2.1 IPv4 Version . 44
7.2.2.2 IPv4 Internet Header Length (IHL) . 44
7.2.2.3 IPv4 Type Of Service (TOS) . 44
7.2.2.4 IPv4 Total Length . 45
7.2.2.5 IPv4 Identification . 45
7.2.2.6 IPv4 Flags . 45
7.2.2.7 IPv4 Fragment Offset . 45
7.2.2.8 IPv4 Time to Live . 45
7.2.2.9 IPv4 Protocol. 46
7.2.2.10 IPv4 Header Checksum . 46
7.2.2.11 IPv4 Source Address . 46
7.2.2.12 IPv4 Destination Address . 46
7.2.3 UDP/IPv4 Compressed Header. 46
7.2.4 UDP/IPv4 Compressed Header Information Elements . 47
7.2.4.1 Source IP Address IDentifier (SAID) . 47
7.2.4.2 Destination IP Address IDentifier (DAID) . 47
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5 ETSI TS 102 361-3 V1.3.1 (2017-10)
7.2.4.3 UDP Source Port IDentifier (SPID) . 48
7.2.4.4 UDP Destination Port IDentifier (DPID) . 48
7.2.4.5 Header Compression Opcode . 48
7.2.4.6 Extended Header 1 . 49
7.2.4.7 Extended Header 2 . 49
Annex A (normative): PDP timers and constants in DMR. 50
A.0 PDP timers and constants in DMR introduction . 50
A.1 Layer 2 timers . 50
A.2 Layer 2 constants . 50
Annex B (normative): Opcode reference lists . 51
B.0 Opcode reference lists introduction . 51
B.1 PDP Full Link Control Opcode list . 51
Annex C (informative): IPv6 transport over PDP . 52
C.0 IPv6 transport over PDP introduction . 52
C.1 IPv6 addressing . 52
C.2 Address mapping over PDP . 53
C.3 IPv6 tunnelling techniques . 53
Annex D (informative): Change requests . 55
Annex E (informative): Bibliography . 56
History . 57

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6 ETSI TS 102 361-3 V1.3.1 (2017-10)
Intellectual Property Rights
Essential patents
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 (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
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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 Specification (TS) has been produced by ETSI Technical Committee Electromagnetic compatibility and
Radio spectrum Matters (ERM).
The present document is part 3 of a multi-part deliverable 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".
Modal verbs terminology
In the present document "shall", "shall not", "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.
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7 ETSI TS 102 361-3 V1.3.1 (2017-10)
1 Scope
The present document contains technical requirements for Digital Mobile Radio (DMR) operating in the existing
licensed land mobile service frequency bands, as identified in CEPT/ERC T/R 25-08 [3].
The present document describes the packet data protocol (PDP) of a scalable Digital Mobile Radio system which covers
three tiers of possible products:
Tier I: DMR equipment having an integral antenna and working in direct mode (communication without
infrastructure) under a general authorization with no individual rights operation.
Tier II: DMR systems operating under individual licences working in direct mode or using a Base Station
(BS) for repeating.
Tier III: DMR trunking systems under individual licences operating with a controller function that
automatically regulates the communications.
NOTE 1: Tier II and Tier III products encompass both simulcast and non-simulcast systems.
NOTE 2: The three tiers of possible products will work only independently and not interoperable.
The present document specifies the Packet Data Protocol (PDP) of DMR that has been specifically developed with the
intention of being suitable for all identified product tiers. The DMR protocol is intended to be applicable to the land
mobile frequency bands, physical channel offset, duplex spacing, range assumptions and all other spectrum parameters
without need for any change.
2 References
2.1 Normative 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.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference/.
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 necessary for the application of the present document.
[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] CEPT/ERC T/R 25-08: "Planning criteria and coordination of frequencies for land mobile service
in the range 29.7-470 MHz".
[4] IETF RFC 791: "Internet Protocol; DARPA Internet Program; Protocol Specification".
[5] IETF RFC 792: "Internet Control Message Protocol; DARPA Internet Program; Protocol
Specification".
[6] IETF RFC 1918: "Address Allocation for Private Internets".
[7] IETF RFC 826: "Ethernet Address Resolution Protocol: Or Converting Network Protocol
Addresses to 48.bit Ethernet Address for Transmission on Ethernet Hardware".
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8 ETSI TS 102 361-3 V1.3.1 (2017-10)
[8] IETF RFC 8200: "Internet Protocol, Version 6 (IPv6) Specification".
[9] IETF RFC 2529: "Transmission of IPv6 over IPv4 Domains without Explicit Tunnels".
[10] IETF RFC 3056: "Connection of IPv6 Domains via IPv4 Clouds".
[11] IETF RFC 3142: "An IPv6-to-IPv4 Transport Relay Translator".
[12] IETF RFC 4213: "Basic Transition Mechanisms for IPv6 Hosts and Routers".
[13] ETSI TS 100 392-18-1: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D) and Direct
Mode Operation (DMO); Part 18: Air Interface optimized applications; Sub-part 1: Location
Information Protocol (LIP)".
[14] IETF RFC 768: "User Datagram Protocol".
[15] IETF RFC 2781: "UTF-16, an encoding of ISO 10646".
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.
Not applicable.
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
Base Station (BS): fixed end equipment that is used to obtain DMR services
bearer service: telecommunication service providing the capability for information transfer between access point
burst: elementary amount of bits within the physical channel
NOTE: For detailed burst definition see clause 4.2.1 in ETSI TS 102 361-1 [1].
call: complete sequence of related transactions between MSs
NOTE: Transactions may be one or more bursts containing specific call related information.
Control plane (C-plane): part of the DMR protocol stack dedicated to control and data services
conventional: non-trunked communication
NOTE: This is a communication technique where any radio unit (MS) may communicate with one or more other
radio units (MSs) without using a trunking protocol, and may be either in direct mode or using any
additional equipment (e.g. BS).
Digital Mobile Radio (DMR): physical grouping that contains all of the mobile and/or fixed end equipment that is
used to obtain DMR services
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9 ETSI TS 102 361-3 V1.3.1 (2017-10)
direct mode: mode of operation where MSs may communicate outside the control of a network
NOTE: This is communication technique where any radio unit (MS) may communicate with one or more other
radio units (MSs) without the need for any additional equipment (e.g. BS).
duplex: mode of operation by which information can be transferred in both directions and where the two directions are
independent
NOTE: Duplex is also known as full duplex.
frame: two contiguous timeslots labelled 1 and 2
NOTE: A frame has a length of 60 ms.
logical channel: distinct data path between logical endpoints
NOTE: The logical channels are labelled 1 and 2. The logical channel may consist of sub-channels, e.g. SYNC,
embedded signalling, etc.
Mobile Station (MS): physical grouping that contains all of the mobile equipment that is used to obtain DMR mobile
services
payload: bits in the information field
physical channel: RF carrier that is modulated with information bits of the bursts
NOTE: The RF carrier may be a single frequency or a duplex pair of frequencies. The physical channel of a DMR
subsystem is required to support the logical channels.
Protocol Data Unit (PDU): unit of information consisting of protocol control information (signalling) and possibly
user data exchanged between peer protocol layer entities
Radio Frequency channel: radio frequency carrier (RF carrier)
NOTE: This is a specified portion of the RF spectrum. In DMR, the RF carrier separation is 12,5 kHz. The
physical channel may be a single frequency or a duplex spaced pair of frequencies.
repeater mode: mode of operation where MSs may communicate through a BS
NOTE: This is a communication technique where any radio unit (MS) may communicate with one or more other
radio units (MSs) with the need for an intermediate BS.
sliding window: DLL confirmed data transmission flow control procedure that requires the target to store multiple data
packets and provide a confirmed response on all the stored data upon request from the source
stop and wait: DLL confirmed data transmission flow control procedure that requires the target to send a confirmation
response after receiving each data packet
superframe: 6 continuous traffic bursts on a logical channel labelled "A" to "F"
NOTE: A superframe has a length of 360 ms and is used for voice traffic only.
timeslot (or slot): elementary timing of the physical channel
NOTE: A timeslot has a length of 30 ms and will be numbered "1" or "2".
transmission: transfer period of bursts containing information or signalling
NOTE: The transmission may be continuous, i.e. multiple bursts transmission without ramp-up, ramp-down, or
discontinuous, i.e. single burst transmission with ramp-up and ramp-down period.
trunking: network controlled communication
NOTE: This is a communication technique where any radio unit (MS) may communicate with one or more other
radio units (MSs) using a trunking protocol and all MSs will be under control of a network.
User plane (U-plane): part of the DMR protocol stack dedicated to user voice services
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10 ETSI TS 102 361-3 V1.3.1 (2017-10)
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AB Appended Block
ACK (positive) ACKnowledgement
AI Air Interface
ARP Address Resolution Protocol
AT Access Type
BMP Basic Multilingual Plane
BS Base Station
NOTE: A reference designating a fixed end device.
CACH Common Announcement CHannel
CCL Call Control Layer
CRC Cyclic Redundancy Checksum for data error detection
C-plane Control plane
DAID Destination (IP) Address IDentifier
DD Defined Data
DLL Data Link Layer
DMR Digital Mobile Radio
DNF Do Not Fragment
DPF Data Packet Format
DPID (UDP) Destination Port IDentifier
ERC European Radiocommunication Committee
FEC Forward Error Correction
FID Feature set ID
FLCO Full Link Control Opcode
FMF Full Message Flag
FULL LC Full Link Control
HMSC High level Message Sequence Chart
ICMP Internet Control Message Protocol
ID Identifier
IHL Internet Header Length
IP Internet Protocol
IPv4 Internet Protocol version 4
IPv6 Internet Protocol version 6
IT Impolite Type
LAN Local Area Network
LC Link Control
LLC Link Layer Control
LLID Logical Link ID
LSB Least Significant Bit
MAC Medium Access Control
MFID Manufacturer's FID
MS Mobile Station
NOTE: A reference designating a mobile or portable radio.
MSB Most Significant Bit
MSC Message Sequence Chart
MTU Maximum Transfer Unit
NA Not Applicable
NACK Negative ACKnowledgement
NAT Network Address Translator
PDP Packet Data Protocol
PDU Protocol Data Unit
PF Protect Flag
PL Physical Layer
RAN Radio Area Network
RF Radio Frequency
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11 ETSI TS 102 361-3 V1.3.1 (2017-10)
RFC Request For Comments
RX Receive
RX_LB Receive Last Block
SACK Selective ACKnowledgement
SAID Source (IP) Address IDentifier
SAP Service Access Point
NOTE: Where a network provides a service.
SARQ Selective Automatic Repeat reQuest
SDL Specification and Description Language
SPID (UDP) Source Port IDentifier
TCP Transmission Control Protocol
TD Terminator Data
TDMA Time Division Multiple Access
TOS Type Of Service
TX Transmit
UDP User Datagram Protocol
USB Universal Serial Bus
UTF-16BE Unicode Transformation Format 16 bit Big-Endian
U-plane User plane
4 Overview
4.0 Overview introduction
The present document describes a Digital Mobile Radio (DMR) system for Tier I, Tier II and Tier III products which
employ a Time Division Multiple Access (TDMA) technology using a 2-slot TDMA solution and RF carrier bandwidth
of 12,5 kHz (see note 1).
NOTE 1: DMR system for Tier I products employs a continuous transmission variation of the previously mentioned
technology.
The present document describes the Call Control Layer (CCL) of the DMR Air Interface (AI) for packet data call
control. Radio equipment (fixed, mobile or portable) which conform to the present document shall be interoperable at
the Air Interface with equipment from other manufacturers. Radio equipment of the present document shall also comply
with ETSI TS 102 361-1 [1].
The present document will not provide the specification or operational detail for system implementations which include
but are not limited to trunking, roaming, network management, vocoder, security, voice and generic services and
facilities, subsystems interfaces and data between private and public switched telephone networks. It describes only the
appropriate access requirements compatible with the Air Interface.
NOTE 2: The DMR standard consists of a multi-part deliverable, which will be referred to in the present document
if needed.
4.1 Protocol architecture
4.1.0 Protocol architecture introduction
The purpose of this clause is to provide a model where the different functions and processes are identified and allocated
to different layers in the DMR protocol stack.
The protocol stack in this clause and all other related clauses describe and specify the interfaces, but these stacks do not
imply or restrict any implementation.
The DMR protocol architecture which is defined herein follows the generic layered structure, which is accepted for
reference description and specification of layered communication architectures.
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12 ETSI TS 102 361-3 V1.3.1 (2017-10)
The DMR standard defines the protocols for the following 3 layered model as shown in figure 4.1.
The base of the protocol stack is the Physical Layer (PL) which is the layer 1.
The Data Link Layer (DLL), which is the layer 2, shall handle sharing of the medium by a number of users. At the
DLL, the protocol stack shall be divided vertically into two parts, the User plane (U-plane), for transporting information
without addressing capability (e.g. voice), and the Control plane (C-plane) for signalling information, both control and
data, with addressing capability, as illustrated by figure 4.1.
NOTE 1: It is appropriate to bear in mind the different requirements of C-plane and U-plane information. C-plane
information needs only a discrete (or non-continuous) physical link to pass information although it needs
a continuous virtual link to support the service. This may also be called signalling or packet mode service.
Acknowledgements may or may not be requested. U-plane information, on the other hand, requires a
regular physical link to be available so that a constant delay service can be supported. This may also be
called circuit mode service.
NOTE 2: The DLL identified in figure 4.1 may be further sub-divided in the air interface protocol to separate the
functionality of Medium Access Control (MAC) and Logical Link Control (LLC), which is often
performed in radio air interface protocols due to the specialized nature of these two tasks. Such separation
is not presented in the present document and is implementation specific. It is further implementation
specific if layer 2 at U-plane offers only MAC for the service.
The Call Control Layer (CCL), which is layer 3, lies in the C-plane and is responsible for control of the call (addressing,
features, etc.), provides the services supported by DMR, and supports Short Data and Packet Data service. U-plane
access at layer 2 (DLL) supports voice service which is available in DMR. The Control Layer for data call control
offered by DMR is described in the present document. The voice and generic services and facilities offered by DMR are
described in ETSI TS 102 361-2 [2].
Control plane User plane
Call Control information
Voice payload
Short Data service
Packet Data service
ssersservice
AI Layer 3
Call Control Layer
AI Layer 2
Data Link Layer
Physical Layer
AI Layer 1
Figure 4.1: DMR protocol stack
4.1.1 Air Interface Physical Layer (layer 1)
The Air Interface layer 1 shall be the physical interface. It shall deal with the physical burst, composed of bits, which is
to be sent and/or received. The Physical Layer is described in ETSI TS 102 361-1 [1].
The Air Interface layer 1 contains the following functions:
• modulation and demodulation;
• transmitter and receiver switching;
• RF characteristics;
• bits and symbol definition;
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13 ETSI TS 102 361-3 V1.3.1 (2017-10)
• frequency and symbol synchronization;
• burst building.
4.1.2 Air Interface Data Link Layer (layer 2)
The Air Interface layer 2 shall handle logical connections and shall hide the physical medium from the upper layers.
The Data Link Layer is described in ETSI TS 102 361-1 [1].
The main functions are as follows:
• channel coding (FEC, CRC);
• interleaving, de-interleaving and bit ordering;
• acknowledgement and retry mechanism;
• media access control and channel management;
• framing, superframe building and synchronization;
• burst and parameter definition;
• link addressing (source and/or destination);
• interfacing of voice applications (vocoder data) with the PL;
• data bearer services;
• exchanging signalling and/or user data with the CCL.
Packet Data Protocol specific DLL features are described in the present document.
4.1.3 Air Interface Call Control Layer (layer 3)
Air Interface layer 3 (CCL) is applicable only to the C-plane, and shall be an entity for the services and features
supported by DMR on top of the layer 2 functionality. The Call Control Layer functionality for voice and generic
services and facilities is described in clause 5 of ETSI TS 102 361-2 [2].
The CCL provides the following functions:
• BS activation;
• establishing, maintaining and terminating of calls;
• individual or group call transmission and reception;
• destination addressing (DMR IDs or gateway as appropriate);
• support of intrinsic services (emergency signalling, pre-emption, late entry, etc.);
• announcement signalling.
Packet Data Protocol specific CCL features that are described in the Internet Protocol bearer service clause of the
present document refer to the IP layer.
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14 ETSI TS 102 361-3 V1.3.1 (2017-10)
4.2 Overview of the DMR Packet Data Protocol (PDP)
The Packet Data Protocol described for DMR is related to packet data transmission procedures, e.g. unconfirmed data,
confirmed data, confirmed data response etc. The Packet Data Protocol defined for DMR contains intrinsic (embedded)
signalling or procedures which may relate to one or more packet data transmission procedures.
All users related signalling or presentation above layer 3 are not part of the present document and are implementation
specific.
The Packet Data Protocol defined in the present document may be used for DMR products and is called the "default
Packet Data Protocol". There is a possibility in the DMR standard which allows manufacturers to define and implement
"private" feature sets which contains additional "private" signalling, which may not be understood by products not
supporting this "private" feature set.
The Packet Data Protocol contains the following types of DLL bearer service data transmissions:
• unconfirmed data transmission;
• confirmed data:
- data transmission;
- response transmission.
The Packet Data Protocol contains the following types of layer 3 bearer service data transmissions:
• Internet Protocol;
• Short Data:
- raw data;
- status/precoded data;
- defined data.
These layer 3 bearer services are built on top of the DLL bearer services.
The present document defines the DMR Packet Data Protocol (PDP) for packet data
...