SIST EN 300 396-3 V1.3.1:2006

• Abstract:

  The multi-part deliverable EN 300 396 defines the TErrestrial Trunked RAdio (TETRA) Direct Mode Operation (DMO). It specifies the basic air interface, the inter-working between Direct Mode (DM) groups via repeaters, and inter-working with the TETRA Voice plus Data (V+D) system via gateways. It also specifies the security aspects in TETRA DMO, and the intrinsic services that are supported in addition to the basic bearer and teleservices.; The present document applies to the TETRA DMO Mobile Station - Mobile Station (MS-MS) air interface and contains the specifications of the Data Link Layer (DLL) and the network layer according to the ISO model. It establishes the services, messages and protocols used for voice and circuit mode data calls and short data transfer, starting with the upper layers:; it defines and specifies the protocol used by the layer 3 entity to communicate across the air interface;; it defines and specifies the services and protocol used in the DLL.; The normative annexes mainly specify the parameter values used in the protocol.

• Status: Published
• Publication Date: 31-Oct-2006
• ICS: 33.070.10 - Terrestrial Trunked Radio (TETRA)
• Technical Committee: MOC - Mobile Communications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Nov-2006
• Due Date: 01-Nov-2006
• Completion Date: 01-Nov-2006
• Ref Project: ETSI EN 300 396-3 V1.3.1 (2006-08) - Terrestrial Trunked Radio (TETRA); Technical requirements for Direct Mode Operation (DMO); Part 3: Mobile Station to Mobile Station (MS-MS) Air Interface (AI) protocol

Overview

SIST EN 300 396-3 V1.3.1:2006 specifies the technical requirements for Direct Mode Operation (DMO) within Terrestrial Trunked Radio (TETRA) systems, focusing on the Mobile Station to Mobile Station (MS-MS) Air Interface (AI) protocol. Developed by SIST and harmonized with EN 300 396-3 standards, this document defines the data link and network layer protocols, services, and procedures required to enable reliable and secure direct communications between mobile TETRA terminals without the need for network infrastructure.

This standard is essential for manufacturers, integrators, and operators involved in the deployment and development of TETRA DMO solutions, ensuring robust interoperability and security across different devices and vendors.

Key Topics

• Direct Mode Operation (DMO): Defines how TETRA terminals communicate directly via the air interface when outside network infrastructure coverage or when infrastructure independence is needed.
• MS-MS Air Interface Protocol: Details the data link layer (DLL) and network layer protocols, including service primitives, message types, and communication procedures between mobile stations.
• Layer 3 Protocols: Specifies upper layer protocols necessary for call setup, call release, short data message transfer, and circuit mode communications.
• Layer 2 Protocols: Addresses service primitives, frame structures, and procedures for transmitting and maintaining communication integrity in the data link layer.
• Security Aspects: Outlines the security mechanisms at the air interface, including encryption states and secure message exchange procedures.
• Call and Data Services: Supports voice and circuit mode data calls as well as short data service (SDS) messages between mobile stations.
• Protocol Parameterization: Provides normative annexes specifying crucial parameter values for air interface communication and protocol compliance.

Applications

SIST EN 300 396-3 V1.3.1:2006 has practical value in a variety of critical radio communications scenarios:

• Public Safety & Emergency Services: Ensures first responders can maintain direct peer-to-peer communications in the absence of network coverage, during emergencies, or in remote areas.
• Transport & Utilities: Supports operational continuity and independent team coordination in environments with unreliable infrastructure.
• Event Security and Field Operations: Enables secure, efficient short data and voice communications for temporary or rapidly deployed teams.
• Manufacturing and Industrial Sites: Facilitates on-site direct communications where network reach is limited or network-free operation is preferred for resilience or privacy reasons.

By adhering to this standard, system integrators and manufacturers ensure their TETRA DMO solutions are compatible and interoperable, promoting seamless communications and reliable user experiences.

Related Standards

The MS-MS Air Interface protocol operates as part of a broader TETRA standardization framework. Key related standards include:

• SIST EN 300 396 (all parts): Provides the full suite of requirements for TETRA Direct Mode Operation, including repeater interworking and gateways with TETRA V+D systems.
• EN 300 392 series: Covers TETRA voice and data communications, including trunked and direct modes.
• ISO Open Systems Interconnection (OSI): References standard network and data link layer models for protocol layering.
• ETSI EN 300 396-2: Details the signalling and operational requirements for DMO repeaters and gateway interworking.

By integrating this standard with related TETRA and OSI-layer standards, organizations can develop and deploy robust, future-proof mission-critical communications solutions for various professional mobile radio applications.

Keywords: TETRA, Direct Mode Operation, DMO, Air Interface Protocol, MS-MS communication, Mobile Station, Data Link Layer, Network Layer, Public Safety Communications, Secure Radio Protocols, TETRA Standardization.

SLOVENSKI STANDARD
01-november-2006
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Terrestrial Trunked Radio (TETRA); Technical requirements for Direct Mode Operation
(DMO); Part 3: Mobile Station to Mobile Station (MS-MS) Air Interface (AI) protocol
Ta slovenski standard je istoveten z: EN 300 396-3 Version 1.3.1
ICS:
33.070.10 Prizemni snopovni radio Terrestrial Trunked Radio
(TETRA) (TETRA)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

European Standard (Telecommunications series)

Terrestrial Trunked Radio (TETRA);
Technical requirements for Direct Mode Operation (DMO);
Part 3: Mobile Station to Mobile Station (MS-MS)
Air Interface (AI) protocol
2 ETSI EN 300 396-3 V1.3.1 (2006-08)

Reference
REN/TETRA-08162
Keywords
air interface, protocol, radio, TETRA
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ETSI
3 ETSI EN 300 396-3 V1.3.1 (2006-08)
Contents
Intellectual Property Rights.11
Foreword.11
1 Scope.12
2 References.12
3 Definitions and abbreviations.13
3.1 Definitions.13
3.2 Abbreviations.15
4 Overview of protocol.17
4.1 General.17
4.2 The DM channel.17
4.3 DM call procedures .18
4.3.1 Constraints on the frame structure .19
4.3.2 Setting up a call .19
4.3.2.1 Call set-up without presence check.19
4.3.2.1.1 Basic procedure.19
4.3.2.1.2 Procedure in frequency efficient mode.20
4.3.2.2 Call set-up with presence check .21
4.3.3 Changeover in a call .21
4.3.4 Pre-emption of a DM call .22
4.3.5 Terminating a call .23
4.3.6 DM short data call .23
4.3.6.1 Unacknowledged short data message.23
4.3.6.2 Acknowledged short data message .24
4.4 DM protocol layering .24
5 Layer 3 service description.25
5.1 Introduction.25
5.2 Services offered.25
5.3 Primitive description.26
5.3.1 DMCC-COMPLETE primitive.26
5.3.2 DMCC-RELEASE primitive.27
5.3.3 DMCC-REPORT primitive.27
5.3.4 DMCC-SDS DATA primitive .27
5.3.5 DMCC-SDS REPORT primitive.28
5.3.6 DMCC-SDS UNITDATA primitive.28
5.3.7 DMCC-SETUP primitive.29
5.3.8 DMCC-TPNI primitive.30
5.3.9 DMCC-TX CEASED primitive.30
5.4 Parameter description.30
5.5 States for DMCC-SAP.35
6 Layer 3 protocol .36
6.1 Introduction.36
6.1.1 DMCC protocol states .36
6.1.1.1 IDLE.36
6.1.1.2 CALL SETUP NORMAL ORIGINATING.36
6.1.1.3 CALL SETUP NORMAL TERMINATING .36
6.1.1.4 CALL SETUP PRES_CHECK ORIGINATING.36
6.1.1.5 CALL SETUP PRES_CHECK TERMINATING.36
6.1.1.6 PRE-EMPTION.36
6.1.1.7 CALL ACTIVE TX OCCUPATION.36
6.1.1.8 CALL ACTIVE TX RESERVATION.37
6.1.1.9 CALL ACTIVE RX OCCUPATION.37
6.1.1.10 CALL ACTIVE RX RESERVATION.37
6.1.1.11 WAIT RSP OCCUPATION .37
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4 ETSI EN 300 396-3 V1.3.1 (2006-08)
6.1.1.12 WAIT RSP RESERVATION.37
6.1.1.13 ACK'D SHORT DATA INITIATED.37
6.1.1.14 UNACK'D SHORT DATA INITIATED.37
6.2 Circuit mode calls.37
6.2.1 Procedures for call set-up without presence check .38
6.2.1.1 Outgoing call.38
6.2.1.2 Incoming call.40
6.2.1.3 Temporary group address.41
6.2.2 Procedures for call set-up with presence check .41
6.2.2.1 Outgoing call.41
6.2.2.2 Incoming call.43
6.2.3 Usage of DM-OCCUPIED PDU .44
6.2.3.1 Sending of DM-OCCUPIED PDU by master DM-MS.44
6.2.3.2 Late entry by slave DM-MS.44
6.2.4 Procedures during occupation.44
6.2.4.1 Master DM-MS.44
6.2.4.2 Slave DM-MS.45
6.2.4.3 Transmitting Party Number Identification (TPNI).47
6.2.5 Procedures during reservation.47
6.2.5.1 Master DM-MS.47
6.2.5.2 Slave DM-MS.49
6.2.5.3 Pre-emption of short data sent as a transaction within a circuit mode call.51
6.2.6 Procedures to set up a new call by pre-emption.51
6.3 Short Data Service (SDS) procedures .52
6.3.1 Sending short data.53
6.3.1.1 Sending short data on a free channel.53
6.3.1.1.1 Sending unacknowledged short data on a free channel .53
6.3.1.1.2 Sending acknowledged short data on a free channel .55
6.3.1.2 Sending short data by pre-emption.57
6.3.1.3 Sending short data during circuit mode transmission.58
6.3.1.4 Sending short data as a transaction within a circuit mode call.59
6.3.1.4.1 Pre-emption to send short data as a transaction within a circuit mode call .59
6.3.1.4.2 Changeover to send short data as a transaction within a circuit mode call.60
6.3.1.4.3 Sending the short data as master of the circuit mode call.60
6.3.2 Receiving short data.60
6.3.2.1 Receiving unacknowledged short data.60
6.3.2.2 Receiving acknowledged short data.61
6.3.3 Additional addressing.61
6.3.4 Extended error protection .61
6.3.5 SDS-TL service in DMO .62
6.3.5.1 Service primitives at the DMTL-SDS-SAP .62
6.3.5.2 DMTL-SDS primitives' parameters .65
6.3.5.3 DMTL-SDS PDUs.67
6.3.5.4 DMTL-SDS procedures.67
6.4 Usage of DMA-UNITDATA primitive.70
7 Layer 2 service description.71
7.1 Introduction.71
7.2 Layer 2 architecture.72
7.2.1 Lower layer management in layer 2.73
7.3 Service descriptions.73
7.3.1 Services at the DMA-SAP .73
7.3.1.1 Services provided to layer 3.73
7.3.1.2 Service primitives at the DMA-SAP .74
7.3.1.2.1 DMA-REPORT primitive.74
7.3.1.2.2 DMA-UNITDATA primitive.74
7.3.2 Services at the DMC-SAP .75
7.3.2.1 Services provided to layer 3.75
7.3.2.2 Service primitives at the DMC-SAP .75
7.3.2.2.1 DMC-CONFIGURE primitive.76
7.3.2.2.2 DMC-REPORT primitive.76
7.3.3 Services at the DMD-SAP .76
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5 ETSI EN 300 396-3 V1.3.1 (2006-08)
7.3.3.1 Services provided to the U-plane application.76
7.3.3.2 Service primitives at the DMD-SAP .76
7.3.3.2.1 DMD-REPORT primitive.77
7.3.3.2.2 DMD-UNITDATA primitive.77
7.4 Parameter listing.77
7.4.1 Air interface encryption information .77
7.4.2 Air interface encryption state.77
7.4.2A Called party in ongoing call.78
7.4.3 Call release.78
7.4.4 Call set-up after pre-emption or changeover.78
7.4.5 Changeover request held during occupation.78
7.4.5A Channel selection information .78
7.4.6 Circuit mode information.78
7.4.7 Circuit mode type.78
7.4.8 Communication type.78
7.4.9 Destination address.78
7.4.10 Destination address type .79
7.4.10A DM channel.79
7.4.11 DM-SDU.79
7.4.12 DM-SDU length.79
7.4.12A Dual watch information.79
7.4.13 FCS flag.79
7.4.14 Half slot condition .79
7.4.15 Half slot content.79
7.4.16 Half slot importance.79
7.4.17 Half slot position.79
7.4.18 Half slot synchronization .80
7.4.19 Handle to the request .80
7.4.20 Immediate retransmission.80
7.4.21 Incomplete DM-SDS DATA/ACK received .80
7.4.21A Lower layer quality information .80
7.4.21B Master of ongoing call .80
7.4.22 Message type.80
7.4.23 New call pre-emption.80
7.4.24 Number of repeats.81
7.4.25 Priority.81
7.4.26 Priority of ongoing call .81
7.4.27 Recent user changeover request.81
7.4.28 Recent user priority.81
7.4.29 Report.81
7.4.30 Reservation time.81
7.4.31 SDS transaction type.81
7.4.32 Source address.81
7.4.33 Source address type .81
7.4.34 Stealing priority.82
7.4.35 Stolen indication.82
7.4.36 Type of pre-emption .82
7.4.37 Valid addresses.82
8 Layer 2 protocol .82
8.1 Introduction.82
8.1.1 Functions of lower MAC .82
8.1.2 Functions of upper MAC .83
8.2 Interface between lower and upper MAC.83
8.2.1 Logical channels defined at the DMV-SAP.83
8.2.2 Service primitives at the DMV-SAP.84
8.2.3 PDU mapping of the logical channels at the DMV-SAP.85
8.2.4 Scrambling mechanism.86
8.2.5 PDU error detection.86
8.2.6 Modes of operation .87
8.2.6.1 DM-MS modes of operation .87
8.2.6.1.1 Idle mode.87
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6 ETSI EN 300 396-3 V1.3.1 (2006-08)
8.2.6.1.2 Signalling mode.87
8.2.6.1.3 Traffic mode.87
8.2.6.2 Operation in traffic mode .88
8.2.6.2.1 Traffic transmission.88
8.2.6.2.2 Stealing mechanism.89
8.2.6.3 Selection of the mode of operation .89
8.3 Basic capabilities of the Physical Layer (PL).90
8.3.1 DM-MS capabilities.90
8.3.1.1 DM only and dual mode capable MS operation.90
8.3.1.2 Dual watch capable MS operation .91
8.3.1.2.1 Full Dual Watch Mobile Station (F-DW-MS).91
8.3.1.2.2 Idle Dual Watch Mobile Station (I-DW-MS) .91
8.4 Usage of DM channel.91
8.4.1 Definition of DM channel.91
8.4.1.1 DM channel arrangement.91
8.4.1.2 DM channel A operation.91
8.4.1.3 DM channel B operation .92
8.4.2 DM-MAC states.93
8.4.2.1 DM-MAC state definitions .93
8.4.2.2 DM-MS channel surveillance procedures .94
8.4.2.2.1 Initial determination of DM channel state .94
8.4.2.2.2 Fast call set-up surveillance in idle mode.96
8.4.2.2.3 DM-MS channel surveillance at call set-up.99
8.4.2.3 Master DM-MS channel maintenance procedures during a call .101
8.4.2.4 Slave DM-MS channel maintenance procedures during a call.101
8.4.2.4.1 Slave MS channel maintenance during call transaction .102
8.4.2.4.2 Slave MS signal quality measurement during call transaction .102
8.4.2.4.3 Slave MS channel maintenance during reservation .102
8.4.2.5 Additional master MS procedures in frequency efficient mode.102
8.4.2.5.1 Channel A master MS procedures .103
8.4.2.5.2 Channel B master MS procedures .103
8.4.3 Criteria for changing DM-MAC state.103
8.4.3.1 Criteria for changing DM-MAC state for master DM-MS.103
8.4.3.2 Criteria for changing DM-MAC state for slave DM-MS.104
8.4.3.3 Criteria for changing DM-MAC state for idle DM-MS .105
8.4.4 DM-MS channel monitoring procedures .107
8.4.4.1 DM channel during call set-up with presence check.108
8.4.4.2 DM channel in occupation during a circuit mode call.108
8.4.4.3 DM channel in reservation during a circuit mode call .108
8.4.4.4 DM channel in occupation during an SDS call .108
8.4.4.5 DM channel usage during pre-emption signalling .109
8.4.4.6 DM channel usage during timing change request signalling.109
8.4.5 Transmission of layer 3 messages by DM-MAC.109
8.4.5.1 Transmission of C-plane messages by DM-MAC.109
8.4.5.1.1 Transmitting DM-SETUP.109
8.4.5.1.2 Transmitting DM-SETUP PRES.110
8.4.5.1.3 Transmitting DM-CONNECT.111
8.4.5.1.4 Transmitting DM-DISCONNECT.111
8.4.5.1.5 Transmitting DM-CONNECT ACK.111
8.4.5.1.6 Transmitting DM-RELEASE.111
8.4.5.1.7 Transmitting DM-OCCUPIED.112
8.4.5.1.8 Transmitting DM-TX CEASED.112
8.4.5.1.9 Transmitting DM-TX REQUEST.113
8.4.5.1.10 Transmitting response to DM-TX REQUEST.113
8.4.5.1.11 Transmitting DM-PREEMPT.114
8.4.5.1.12 Transmitting response to DM-PREEMPT.114
8.4.5.1.13 Transmitting DM-SDS UDATA and DM-SDS DATA.115
8.4.5.1.14 Transmitting response to DM-SDS DATA .116
8.4.5.1.15 Transmitting DM-INFO.116
8.4.5.2 Transmission of U-plane messages by DM-MAC .116
8.4.6 Transmission of layer 2 messages generated by DM-MAC .116
8.4.6.1 Transmitting DM-RESERVED.117
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8.4.6.2 Transmitting DM-SDS OCCUPIED .117
8.4.6.3 Transmitting DM-TIMING REQUEST .118
8.4.6.4 Transmitting DM-TIMING ACK.118
8.4.7 General DM-MAC procedures .118
8.4.7.1 DM-MAC repeat transmissions .118
8.4.7.2 DM-MAC frame countdown procedure.118
8.4.7.3 Use of timers .119
8.4.7.4 Linearization.119
8.4.7.5 Fragmentation.119
8.4.7.6 Fill bit indication.119
8.4.7.7 Selection of pseudo address .119
8.4.7.8 Slot flag indication .120
8.4.7.9 Requests bitmap.120
8.4.7.10 DM aspects of dual watch operation .120
8.4.7.10.1 Full and idle dual watch operation.120
8.4.7.10.2 DM aspects of full dual watch operation.120
8.4.7.10.3 DM aspects of idle dual watch operation .124
8.4.7.11 Air interface encryption .126
8.4.7.12 Channel A or B operation .126
8.4.7.13 Sending short data as a transaction within a circuit mode call.126
8.4.7.14 SDS time remaining .127
8.4.7.15 Timing change procedure.127
8.4.7.16 Timing change at changeover or pre-emption.129
8.5 MAC procedures for transfer of signalling messages.129
8.5.1 Formation of MAC PDU .129
8.5.2 Addressing.130
8.5.2.1 Transmission of message.130
8.5.2.1.1 Addressing in synchronization burst .130
8.5.2.1.2 Addressing in normal burst.132
8.5.2.2 Reception of message.132
8.5.3 Use of air interface encryption.133
8.5.4 Fragmentation and reconstruction.134
8.5.4.1 Fragmentation.134
8.5.4.2 Reconstruction.135
8.5.5 Fill bit addition and deletion.136
8.5.5.1 Fill bit addition.136
8.
...