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Conventional Digital Land Mobile Radio Systems

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Conventional Digital Land Mobile Radio Systems Report ITU-R M.2474-0 (09/2019) Conventional digital land mobile radio systems M Series Mobile, radiodetermination, amateur and related satellite services ii Rep. ITU-R M.2474-0 Foreword The role of the Radiocommunication Sector is to ensure the rational, equitable, efficient and economical use of the radio- frequency spectrum by all radiocommunication services, including satellite services, and carry out studies without limit of frequency range on the basis of which Recommendations are adopted. The regulatory and policy functions of the Radiocommunication Sector are performed by World and Regional Radiocommunication Conferences and Radiocommunication Assemblies supported by Study Groups. Policy on Intellectual Property Right (IPR) ITU-R policy on IPR is described in the Common Patent Policy for ITU-T/ITU-R/ISO/IEC referenced in Resolution ITU- R 1. Forms to be used for the submission of patent statements and licensing declarations by patent holders are available from http://www.itu.int/ITU-R/go/patents/en where the Guidelines for Implementation of the Common Patent Policy for ITU-T/ITU-R/ISO/IEC and the ITU-R patent information database can also be found. Series of ITU-R Reports (Also available online at http://www.itu.int/publ/R-REP/en) Series Title BO Satellite delivery BR Recording for production, archival and play-out; film for television BS Broadcasting service (sound) BT Broadcasting service (television) F Fixed service M Mobile, radiodetermination, amateur and related satellite services P Radiowave propagation RA Radio astronomy RS Remote sensing systems S Fixed-satellite service SA Space applications and meteorology SF Frequency sharing and coordination between fixed-satellite and fixed service systems SM Spectrum management Note: This ITU-R Report was approved in English by the Study Group under the procedure detailed in Resolution ITU-R 1. Electronic Publication Geneva, 2019 ITU 2019 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without written permission of ITU. Rep. ITU-R M.2474-0 1 REPORT ITU-R M.2474-0 Conventional digital land mobile radio systems (2019) TABLE OF CONTENTS Page 1 Summary ......................................................................................................................... 2 2 Related Recommendations and Reports ......................................................................... 2 3 Acronyms and Definitions .............................................................................................. 3 4 Introduction .................................................................................................................... 4 4.1 Typical CLMR system architecture .................................................................... 4 4.2 CDLMR .............................................................................................................. 7 5 General technical and operational considerations .......................................................... 9 6 Systems technical characteristics and operational features and standards ..................... 10 6.1 Systems technical characteristics and operational features ................................ 10 6.2 Standards ............................................................................................................. 11 6.3 Summary of Conventional DLMR systems features .......................................... 14 7 Frequency bands ............................................................................................................. 14 7.1 Frequency bands ................................................................................................. 14 7.2 Channel spacing and centre frequencies ............................................................. 14 7.3 Channel arrangements ........................................................................................ 15 8 Frequency selection and assignment .............................................................................. 15 8.1 Examples of frequency assignment methods ...................................................... 16 9 Analogue to digital transition ......................................................................................... 16 9.1 Digital Voice and Data ....................................................................................... 17 9.2 Transition analogue to digital ............................................................................. 17 10 Interleaved and offset channelling arrangements ........................................................... 18 10.1 Interleaved channel plans ................................................................................... 18 10.2 Offset channel plans ........................................................................................... 18 2 Rep. ITU-R M.2474-0 Page Annex 1 – An example of frequency bands and channel spacings for CLMR systems .......... 19 1 Introduction .................................................................................................................... 19 2 Example of frequency bands and channelling ................................................................ 19 Annex 2 – An example of frequency channel selection for CLMR systems using Frequency-Distance Criteria ........................................................................................... 20 1 Introduction .................................................................................................................... 20 2 Frequency – Distance criteria ......................................................................................... 21 2.1 Deployment model .............................................................................................. 21 2.2 Minimum distance separation between two CLMR system type A ................... 21 2.3 Minimum distance separation between two CLMR system type B ................... 23 2.4 Minimum distance separation between two CLMR system type C ................... 25 2.5 Minimum distance separation between a CLMR system type A and type B ..... 27 Annex 3 – An example of frequency assignment plan for 25 kHz channels that are separated by 10 channels from each other in a group ..................................................................... 29 1 Summary This Report deals with the technical and operational characteristics of conventional (non-cellular) digital land mobile radio (CDLMR) systems that provide capabilities required for specific user groups/applications, such as governmental, mining, health, hospitality, transportations, disaster relief, industrial, manufacturing, construction, etc. This report also includes information on approaches to frequency assignments for CDLMR. Digital Cellular Land Mobile Telecommunication Systems, including IMT systems, are addressed in other ITU documents. Digital Land Mobile Radiocommunication Systems for specific applications, such as PPDR and trunked systems for dispatch, are addressed in other ITU documents. 2 Related Recommendations and Reports Recommendation ITU-R M.1073 – Digital Cellular Land Mobile Telecommunication Systems Recommendation ITU-R M.2009 – Radio interface standards for use by public protection and disaster relief operations in accordance with Resolution 646 (Rev.WRC-15) Recommendation ITU-R M.2015 – Frequency arrangements for public protection and disaster relief radiocommunication systems in accordance with Resolution 646 (Rev.WRC-15) Rep. ITU-R M.2474-0 3 Report ITU-R M.2014 – Digital land mobile systems for dispatch traffic Report ITU-R M.2377 – Radiocommunication objectives and requirements for Public Protection and Disaster Relief Report ITU-R M.2415 – Spectrum needs for Public Protection and Disaster Relief (PPDR) 3 Acronyms and Definitions AES Advanced encryption standard AMBE+2 Advanced multi-band excitation CDLMR Conventional digital land mobile radio CLMR Conventional land mobile radio CTCSS Continuous tone-coded squelch system DCS Digital code squelch DES Data encryption standard DMO Direct mode operation ECC Electronic Communications Committee ETSI European Telecommunication Standards Institute FDMA Frequency division multiple access FSK Frequency shift keying GPS Global Positioning System IMBE Improved multi-band excitation IPv4 Internet Protocol V4 IPv6 Internet Protocol V6 LBT Listen before talk LMR Land mobile radio PLMR Private land mobile radio PPDR Public protection and disaster relief PTT Push to talk R Receiver RF Radio Frequency SMS Short Message Service T Transmitter TDMA Time division multiple access Conventional Digital Land Mobile Radio (CDLMR) System: CLMR system that transmits and receives using digital modulation techniques. Conventional Land Mobile Radio (CLMR) System: Non-cellular radiocommunications system where two or more LMR stations communicate on a predetermined frequency channel(s), without the use 4 Rep. ITU-R M.2474-0 of any controlling station and/or control frequency channel, with push-to-talk and group communications capabilities. Land Mobile Radio (LMR) System: Analogue or digital two-way conventional or trunked radio communications system in which two or more fixed or mobile radio stations in the land mobile service communicate on one or more frequency (ies). Private Land Mobile Radio (PLMR or PMR) System: LMR system utilized by a closed group of users to meet specific radiocommunication requirements. Trunked Land Mobile Radio (TLMR) System: Radiocommunications system where two or more LMR stations communicate on frequency channels
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