IEC 62657-2:2017/AMD1:2019

IEC 62657-2 ®
Edition 2.0 2019-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Industrial communication networks – Wireless communication networks –
Part 2: Coexistence management

Réseaux de communication industriels – Réseaux de communication sans fil –
Partie 2: Gestion de coexistence

IEC 62657-2:2017-05/AMD1:2019-09(en-fr)

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IEC 62657-2 ®
Edition 2.0 2019-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Industrial communication networks – Wireless communication networks –

Part 2: Coexistence management

Réseaux de communication industriels – Réseaux de communication sans fil –

Partie 2: Gestion de coexistence

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.040.40; 33.040.40; 35.110 ISBN 978-2-8322-7266-4

– 2 – IEC 62657-2:2017/AMD1:2019
© IEC 2019
FOREWORD
This amendment has been prepared by subcommittee 65C: Industrial networks, of IEC
technical committee 65: Industrial-process measurement, control and automation.
The text of this amendment is based on the following documents:
FDIS Report on voting
65C/968/FDIS 65C/976/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC website under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
_____________
INTRODUCTION
This Amendment 1 to the second edition includes the following significant technical changes:
a) alignment of some definitions and specifications of coexistence parameters in order to
facilitate their future inclusion in the IEC Common Data Dictionary (IEC CDD) maintained
by the IEC.
3 Terms, definitions, abbreviated terms and conventions
3.1 Terms and definitions
Replace the existing terms and definitions by the following:
3.1.1
adjacent channel interference
interference that occurs from wireless devices using adjacent frequency channels
3.1.2
adjacent channel selectivity
ability of a radio receiver to respond to the desired signal and to reject signals in adjacent
frequency channels
© IEC 2019
3.1.3
antenna gain
ratio of the power required at the input of a reference antenna to the power supplied to the
input of the given antenna to produce, in a given direction, the same field strength at the
same distance
[SOURCE: Federal Standard 1037C:1996, modified – Deletion of “loss-free” before “reference
antenna”, deletion of the two notes and synonyms] [21]
3.1.4
antenna radiation pattern
variation of the field intensity of an antenna as an angular function with respect to the axis
3.1.5
antenna type
structure or device used to collect or radiate electromagnetic waves
3.1.6
application communication requirements
quantitative requirements specifying the required conditions and the required characteristics
of wireless communication solutions at the communication interface that is met in order to
achieve the purpose of the automation application
3.1.7
automation application
industrial automation application
application of measurement and automatic control in the industrial automation domain
3.1.8
automation application data length
user data length
number of octets that are exchanged at the reference interface
3.1.9
availability
 ability of an item to be in a state to perform as required function under given
conditions at a given instant of time or over a given time interval, assuming that the required
external resources are provided
Note 1 to entry: This ability depends on the combined aspects of the reliability performance, the maintainability
performance, and the maintenance support performance.
Note 2 to entry: Required external resources, other than maintenance resources, do not affect the availability
performance of the item.
[SOURCE: IEC 60050-191:1990, 191-02-05, modified – Deletion of third note to entry]
3.1.10
bandwidth
frequency bandwidth
difference between upper cut-off frequency and lower cut-off frequency
3.1.11
bit rate of the physical link
measure of the number of binary digits transferred per second

– 4 – IEC 62657-2:2017/AMD1:2019
© IEC 2019
3.1.12
cellular topology
cellular network topology
network topology where the geographical area is divided in cells
Note 1 to entry: A device can move from one cell to another cell. Devices that are in a cell communicate through
a central hub. Hubs in different cells are interconnected.
3.1.13
center frequency
geometric mean of lower cut-off frequency and upper cut-off frequency of a frequency channel
3.1.14
channel number
unsigned integer number identifying a wireless communication channel in accordance to an
authoritative document or rule
3.1.15
channel occupation
time in which the medium is busy
Note 1 to entry: Beyond the pure transfer of user data, this time includes all time slices necessary to process the
transmission protocol, for example to transfer an acknowledgement.
3.1.16
characteristic of the area of operation
distinguishing properties of the area where the wireless communication network is operated
3.1.17
characteristic of wireless communication solution
parameters of wireless communication solutions which are implementations of wireless
communication systems and devices
3.1.18
characteristic of wireless device solution
parameters related to individual nodes within a network implementing a wireless
communication solution
3.1.19
characteristic of wireless device type
specification of transmitter and receiver parameters
3.1.20
characteristic of wireless network solution
parameters related to a network as a whole used implementing a wireless communication
solution
3.1.21
characteristic of wireless system type
parameters describing the kind of wireless communication system
3.1.22
characteristic of wireless system type and wireless device type
parameters that characterize the model of a wireless system or a wireless device by providing
the parameters to specify a wireless system type and a wireless device type

© IEC 2019
3.1.23
coexistence
wireless communication coexistence
state in which all wireless communication solutions of a plant using shared medium fulfil all
their application communication requirements
Note 1 to entry: In IEEE 802.15.2-2003 [19] the coexistence is defined as a characteristic of a device.
3.1.24
coexistence assessment
undertaking of an investigation in order to arrive at a judgment, based on evidence of the
suitability of a set of products and their installation to achieve coexistence
3.1.25
coexistence management
process to establish and to maintain coexistence that includes technical and organizational
measures
3.1.26
coexistence management information
parameters for the wireless coexistence management process
3.1.27
coexistence manager
role of a nominated person to manage coexistence
3.1.28
coexistence planning
process that describes the allocation of wireless communication resources (time, frequencies,
coding, space) to each wireless communication system in order to achieve coexistence
3.1.29
communication load
amount of user data to be transmitted from the automation application within a certain period
of time
3.1.30
cut-off frequency
frequency limit, nearest to the frequency where the spectral power density drops below a
certain level, defining the frequency bandwidth
3.1.31
data throughput
ratio of the number of user data per time period, transferred within a consumer at the
reference interface to the application
3.1.32
device type information
manufacturer name, manufacturer contact, the type and version of hardware and software
3.1.33
distance between wireless devices
geographical distance between devices within a three-dimensional space
3.1.34
duty cycle
ratio of the transmitter sequence referenced to a given observation time for the used
frequency channel
– 6 – IEC 62657-2:2017/AMD1:2019
© IEC 2019
3.1.35
dwell time
period spent at a particular frequency during any single hop of a frequency hopping system
3.1.36
equivalent isotropic radiated power
product of the power supplied to the antenna and the antenna gain in a given direction
relative to an isotropic antenna (absolute or isotropic gain)
[SOURCE: Radio Regulations (2012) – Art. 1 § 1.161, modified – Term modified from
isotropically to isotropic and definition reformatted according to the ISO/IEC Directives Part 2]
3.1.37
effective radiated power
product of the power supplied to the antenna and its gain relative to a half-wave dipole in a
given direction
[SOURCE: Radio Regulations (2012) – Art. 1 § 1.162, modified – Deleted “(in a given
direction)” and definition reformatted according to the ISO/IEC Directives Part 2]
3.1.38
electromagnetic interference
EMI
degradation of the performance of an equipment, transmission channel or system caused by
an electromagnetic disturbance
No
...