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IEC 62657-2 Edition 3.0 2022-06 INTERNATIONAL STANDARD NORME INTERNATIONALE Ind

IEC 62657-2 Edition 3.0 2022-06 INTERNATIONAL STANDARD NORME INTERNATIONALE Industrial networks – Coexistence of wireless systems – Part 2: Coexistence management Réseaux industriels – Coexistence des systèmes sans fil – Partie 2: Gestion de coexistence INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 25.040.40; 33.040; 35.100 ISBN 978-2-8322-0973-8 ® Registered trademark of the International Electrotechnical Commission Marque déposée de la Commission Electrotechnique Internationale ® Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé. colour inside This is a preview - click here to buy the full publication – 2 – IEC 62657-2:2022 © IEC 2022 CONTENTS FOREWORD ........................................................................................................................... 7 INTRODUCTION ..................................................................................................................... 9 1 Scope ............................................................................................................................ 11 2 Normative references .................................................................................................... 11 3 Terms, definitions, abbreviated terms and conventions .................................................. 12 3.1 Terms and definitions ............................................................................................ 12 3.2 Abbreviated terms ................................................................................................. 27 3.3 Conventions .......................................................................................................... 28 4 Coexistence concept in industrial automation ................................................................ 28 4.1 Overview............................................................................................................... 28 4.2 Objective .............................................................................................................. 30 4.3 Necessity to implement a coexistence management .............................................. 32 4.4 Interference potential ............................................................................................ 33 4.5 Ancillary conditions ............................................................................................... 35 4.6 Requirements to wireless devices for support of coexistence management ........... 36 4.7 Concepts .............................................................................................................. 36 4.7.1 Manual coexistence management .................................................................. 36 4.7.2 Automated non-collaborative coexistence management ................................. 37 4.7.3 Automated collaborative coexistence management ........................................ 37 4.8 Best practices to achieve coexistence ................................................................... 38 4.9 Coexistence conceptual model .............................................................................. 40 4.10 Coexistence management and selection of a wireless solution .............................. 42 4.11 Coexistence management system ......................................................................... 44 5 Coexistence management parameters ........................................................................... 44 5.1 General ................................................................................................................. 44 5.1.1 Definition and usage of parameters ............................................................... 44 5.1.2 Physical link .................................................................................................. 44 5.2 Adjacent channel selectivity .................................................................................. 45 5.3 Antenna gain ........................................................................................................ 45 5.4 Antenna radiation pattern ...................................................................................... 45 5.5 Antenna type ........................................................................................................ 45 5.6 Communication availability .................................................................................... 46 5.7 Communication reliability ...................................................................................... 46 5.8 Bit rate of physical link .......................................................................................... 46 5.9 Blocked frequency list ........................................................................................... 46 5.10 Centre frequency .................................................................................................. 46 5.11 Area of operation .................................................................................................. 47 5.12 Communication load ............................................................................................. 47 5.13 Cut-off frequency .................................................................................................. 49 5.14 Data throughput .................................................................................................... 50 5.15 Distance between wireless devices ....................................................................... 50 5.16 Duty cycle ............................................................................................................. 51 5.17 Dwell time ............................................................................................................. 53 5.18 Equivalent isotropic radiated power....................................................................... 54 5.19 Equivalent radiated power ..................................................................................... 54 5.20 Frequency band .................................................................................................... 54 This is a preview - click here to buy the full publication IEC 62657-2:2022 © IEC 2022 – 3 – 5.21 Frequency bandwidth ............................................................................................ 54 5.22 Frequency channel ............................................................................................... 55 5.23 Frequency hopping sequence ............................................................................... 55 5.24 Future expansion plan .......................................................................................... 56 5.25 Geographical dimension of the plant ..................................................................... 56 5.26 Infrastructure device ............................................................................................. 56 5.27 Initiation of data transmission ............................................................................... 56 5.28 Interference type ................................................................................................... 56 5.29 Intervisibility.......................................................................................................... 57 5.30 ISM application ..................................................................................................... 57 5.31 Length of user data per transfer interval................................................................ 57 5.32 Limitation from neighbours of the plant ................................................................. 57 5.33 Maximum number of retransmissions .................................................................... 57 5.34 Mechanism for adaptivity ...................................................................................... 58 5.35 Medium access control mechanism ....................................................................... 58 5.36 Medium utilization factor ....................................................................................... 58 5.37 Message ............................................................................................................... 59 5.38 Modulation ............................................................................................................ 59 5.39 Natural environmental condition ............................................................................ 59 5.40 Network topology .................................................................................................. 59 5.41 Number of consecutive lost messages .................................................................. 60 5.42 Object movement .................................................................................................. 60 5.43 Operating time between failures ............................................................................ 60 5.44 Message loss ratio ................................................................................................ 60 5.45 Position of wireless devices .................................................................................. 61 5.46 Power spectral density .......................................................................................... 61 5.47 Purpose of the automation application .................................................................. 62 5.48 Receiver blocking ................................................................................................. 62 5.49 Receiver maximum input level ............................................................................... 62 5.50 Receiver sensitivity ............................................................................................... 62 5.51 Regional radio regulations .................................................................................... 62 5.52 Relative movement ............................................................................................... 63 5.53 Response time ...................................................................................................... 63 5.54 Security level ........................................................................................................ 63 5.55 Spatial coverage of the wireless communication system ....................................... 64 5.56 Spatial extent of the application ............................................................................ 64 5.57 Spurious response ................................................................................................ 64 5.58 Survival time ......................................................................................................... 64 5.59 Total radiated power ............................................................................................. 64 5.60 Transfer interval .................................................................................................... 64 5.61 Transmission gap .................................................................................................. 65 5.62 Transmission time ................................................................................................. 66 5.63 Transmitter output power ...................................................................................... 69 5.64 Transmitter sequence ........................................................................................... 69 5.65 Transmitter spectral mask ..................................................................................... 71 5.66 Update time .......................................................................................................... 71 5.67 Wireless device density ........................................................................................ 72 5.68 Wireless device type information ........................................................................... 72 5.69 Wireless communication solution density .............................................................. 73 This is a preview - click here to buy the full publication – 4 – IEC 62657-2:2022 © IEC 2022 5.70 Wireless technology or standard ........................................................................... 73 6 Coexistence management information structures ........................................................... 73 6.1 General ................................................................................................................. 73 6.2 General plant characteristic .................................................................................. 75 6.2.1 General ......................................................................................................... 75 6.2.2 General plant characteristic ........................................................................... 75 6.2.3 Passive environmental influences .................................................................. 76 6.2.4 Active environmental influences ..................................................................... 76 6.3 Application communication requirements .............................................................. 77 6.3.1 Overview ....................................................................................................... 77 6.3.2 Requirements influencing the characteristic of wireless solutions .................. 78 6.3.3 Performance requirements ............................................................................. 79 6.4 Wireless system type and wireless device type ..................................................... 79 6.4.1 Overview ....................................................................................................... 79 6.4.2 Wireless system type ..................................................................................... 80 6.4.3 Wireless device type ...................................................................................... 80 6.5 Wireless solution .................................................................................................. 83 6.5.1 Overview ....................................................................................................... 83 6.5.2 Wireless system solution ............................................................................... 83 6.5.3 Wireless device solution ................................................................................ 84 6.6 Application related characteristic parameters ........................................................ 85 7 Coexistence management process ................................................................................ 87 7.1 General ................................................................................................................. 87 7.1.1 Overview ....................................................................................................... 87 7.1.2 Documentation .............................................................................................. 87 7.1.3 Suitable documentation method ..................................................................... 89 7.1.4 Application of tools ........................................................................................ 89 7.2 Establishment of a coexistence management system ............................................ 89 7.2.1 Nomination of a coexistence manager ........................................................... 89 7.2.2 Responsibility of a coexistence manager ....................................................... 90 7.2.3 Support by wireless experts ........................................................................... 90 7.2.4 Training ......................................................................................................... 91 7.3 Maintaining coexistence management system ....................................................... 91 7.4 Phases of a coexistence management process ..................................................... 91 7.4.1 Investigation phase ........................................................................................ 91 7.4.2 Planning phase .............................................................................................. 94 7.4.3 Implementation phase.................................................................................... 96 7.4.4 Operation phase ............................................................................................ 97 8 Coexistence parameter templates .................................................................................. 99 Bibliography ........................................................................................................................ 106 Figure 1 – Issues of consideration ........................................................................................ 31 Figure 2 – Applications using frequency spectrum ................................................................ 31 Figure 3 – Progression of expense to achieve coexistence corresponding to the application classes ............................................................................................................... 36 Figure 4 – Separation of wireless systems according to frequency and time ......................... 39 Figure 5 – Coexistence conceptual model ............................................................................. 41 Figure 6 – Flow chart of the coexistence conceptual model ................................................... 42 This is a preview - click here to buy the full publication IEC 62657-2:2022 © IEC 2022 – 5 – Figure 7 – Selection of a wireless system in the coexistence management process .............. 43 Figure 8 – Communication load in case of two wireless devices ............................................ 48 Figure 9 – Communication load in the case of several wireless devices ................................ 49 Figure 10 – Cut-off frequencies derived from maximum power level ...................................... 50 Figure 11 – Distance of the wireless devices ........................................................................ 51 Figure 12 – Duty cycle .......................................................................................................... 52 Figure 13 – Maximum dwell time ........................................................................................... 53 Figure 14 – Power spectral density of an IEEE 802.15.4 system ........................................... 61 Figure 15 – Communication cycle, application event interval and machine cycle ................... 65 Figure 16 – Transmission gap ............................................................................................... 66 Figure 17 – Example of the density functions of transmission time ........................................ 67 Figure 18 – Example of the distribution functions of transmission time .................................. 68 Figure 19 – Transmitter sequence ......................................................................................... 70 Figure 20 – Transmitter spectral mask of an IEEE 802.15.4 system ...................................... 71 Figure 21 – Example of distribution functions of the update time ........................................... 72 Figure 22 – Principle for use of coexistence parameters ....................................................... 75 Figure 23 – Parameters to describe the general plant characteristic ..................................... 75 Figure 24 – Parameters to describe application communication requirements ...................... 78 Figure 25 – Parameters to describe wireless system type and device type ............................ 79 Figure 26 – Example of power spectral density and transmitter spectral mask ...................... 81 Figure 27 – Example of medium utilization in time and frequency .......................................... 82 Figure 28 – Parameters to describe a wireless communication solution ................................ 83 Figure 29 – Planning of a wireless system in the coexistence management process ............. 95 Figure 30 – Implementation and operation of a wireless system in the coexistence management process ............................................................................................................ 98 Table 1 – Example of a classification of application communication requirements ................. 30 Table 2 – Application profile dependent observation time values ........................................... 52 Table 3 – Parameter options for frequency channel .............................................................. 55 Table 4 – Hierarchy of the characteristics ............................................................................. 74 Table 5 – List of parameters used to describe the general plant characteristic ...................... 76 Table 6 – List of parameters used to describe the passive environmental influences ............. 76 Table 7 – List of parameters used to describe the active environmental influences ............... 76 Table 8 – List of parameters used to describe the interference type ...................................... 77 Table 9 – List of parameters used to describe the requirements influencing the characteristic of wireless solutions ........................................................................................ 78 Table 10 – List of characteristic parameters .......................................................................... 79 Table 11 – List of parameters used to describe the wireless system type .............................. 80 Table 12 – List of parameters used to describe the transmitter of a wireless device type ...... 82 Table 13 – List of parameters used to describe the uploads/Philosophie/info-iec62657-2-ed3-0-b.pdf