ETR 300-3 : 20001

Foreword
1 Scope
2 References
3 Definitions and abbreviations
   3.1 Definitions
   3.2 Abbreviations
4 What is direct mode and why do we need it?
   4.1 General
   4.2 Frequency of operation
   4.3 Managed Direct Mode
   4.4 Direct Mode on European shared harmonised spectrum
5 Direct mode services and facilities
   5.1 Service definitions
   5.2 Direct mode teleservices
   5.3 Direct mode bearer services
   5.4 Intrinsic services
6 Description of direct mode equipment types
   6.1 General
   6.2 Direct mode mobile station (DM-MS)
   6.3 Dual watch mobile station (DW-MS)
   6.4 Direct mode repeater (DM-REP)
   6.5 Direct mode gateway (DM-GATE)
   6.6 Direct mode repeater/gateway combination (DM-REP/GATE)
   6.7 Direct mode power classes
   6.8 Limitations imposed by the physical layer for direct
         mode type equipment
7 Direct mode operational examples
   7.1 General
   7.2 MS to MS communication with Dual Watching
   7.3 DMO communication via a repeater with Dual Watching
   7.4 Gateway operation
   7.5 Direct mode repeater/gateway operation
8 Basic direct mode MS-MS protocol
   8.1 Testable boundaries
   8.2 DM protocol layering
   8.3 Direct mode functionality
   8.4 Physical resources
   8.5 Slot timing diagrams
   8.6 Call set-up protocol
   8.7 Channel surveillance
   8.8 Battery economy
   8.9 Frequency efficient operation
9 Implementation and operation issues affecting dual watch
   9.1 General
   9.2 Basis for dual watch operation
   9.3 Implementation of dual watch operation
10. Security feature
   10.1 Authentication
   10.2 Confidentiality
   10.3 Key Management.
   10.4 Secure Enable and Disable
11. Radio Aspects
   11.1 DMO deployment constraints
   11.2 Transmitter noise
   11.3 Blocking
   11.4 Effects of transmitter noise and blocking
   11.5 Methodology
   11.6 Example 1 - wanted signal at extremity of range,
         unwanted interferer close by
   11.7 Example 2 - wanted signal at close range, unwanted
         interferer close by
   11.8 Unwanted transmission noise versus blocking
   11.9 Variation of stay-away distance with transmitter
         power and frequency separation
   11.10 Effect of assumptions
   11.11 Implementation issues
Annex A (normative): Teleservices, bearer and supplementary
        services supported by TMO/DMO
Annex B (informative): Support of security features
      B.1 Time Variant Parameter
      B.2 Synchronisation of end-to-end encryption
Annex C (informative): Short range propagation models used in
        the co-existence studies
      C.1 Introduction
      C.2 Free space propagation
      C.3 Wickson model
      C.4 CEPT SE21 model
      C.5 Discussion
Annex D (informative): RF channel selection, numbering and
        addressing
      D.1 Background
      D.2 Numbering
      D.3 Addressing in repeater and gateway direct mode operation
      D.4 Summary
Annex E (normative): TDMA frame and slot structure for direct
        mode operation
      E.1 Frame structure
      E.2 Timeslots and bursts
Annex F (normative): DM support for short data messages
      F.1 DM short data call
      F.2 Unacknowledged short data message
      F.3 Acknowledged short data message
Annex G (informative): Bibliography
History

A guide to TETRA-specific features, radio network planning aspects and the features which affect the traffic capacity.