ISO/IEC 30161-2:2023

ISO/IEC 30161-2
Edition 1.0 2023-03
INTERNATIONAL
STANDARD
colour
inside
Internet of things (IoT) – Data exchange platform for IoT services –
Part 2: Transport interoperability between nodal points

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ISO/IEC 30161-2
Edition 1.0 2023-03
INTERNATIONAL
STANDARD
colour
inside
Internet of things (IoT) – Data exchange platform for IoT services –

Part 2: Transport interoperability between nodal points

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 35.020 ISBN 978-2-8322-6537-6

– 2 – ISO/IEC 30161-2:2023 © ISO/IEC 2023
CONTENTS
FOREWORD . 3
INTRODUCTION . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Abbreviated terms . 6
5 Overview . 6
6 Functional requirements . 8
6.1 General . 8
6.2 Transport interoperability among nodal points . 8
6.3 System parameters for an IoT system . 9
6.4 Data exchange types and data transfer types . 10
7 Functional sub-blocks . 11
7.1 General . 11
7.2 Definitions of functional sub-blocks . 11
7.3 Interworking functional sub-block . 12
7.3.1 General . 12
7.3.2 Routing function . 12
7.3.3 Forwarding function . 13
7.4 Interoperability management functional sub-block . 13
7.5 Interoperability control functional sub-block . 14
8 Operation mechanism . 14
8.1 General . 14
8.2 Request-based transfer by static assignment . 15
8.3 Request-based transfer by dynamic discovery . 15
8.4 Data-based transfer by static assignment. 15
8.5 Data-based transfer by dynamic discovery . 15
Annex A (informative) Latency-critical IoT services . 16
Annex B (informative) Storage strategy for latency-critical IoT services at a nodal point . 17
B.1 General . 17
B.2 Operation for latency critical IoT services. 17
B.3 Operation for quick IoT data acquisition . 18
B.4 Operation for data collection services . 18
Bibliography . 20

Figure 1 – Relationship with IoT Reference model . 7
Figure 2 – IoT DEP network by multiple nodal points . 8
Figure 3 – IoT data exchanged among IoT DEPs . 8
Figure 4 – Functions and positions of nodal points . 9
Figure 5 – Data exchange types and data transfer types . 11
Figure 6 – Detailed functional blocks with functional sub-blocks in IoT DEP . 12
Figure B.1 – Assignment process of latency-tolerant periods . 17
Figure B.2 – Operation for quick IoT data acquisition . 18
Figure B.3 – Operation for data collection services . 19

Table 1 – System parameters for IoT system . 10
Table 2 – Classification of operations of transferring IoT data among nodal points . 14

INTERNET OF THINGS (IoT) –
DATA EXCHANGE PLATFORM FOR IoT SERVICES –

Part 2: Transport interoperability between nodal points

FOREWORD
1) ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission)
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participate in the development of International Standards through technical committees established by the
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ISO/IEC 30161-2 has been prepared by subcommittee 41: Internet of Things and Digital Twin,
of ISO/IEC joint technical committee 1: Information technology. It is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
JTC1-SC41/326/FDIS JTC1-SC41/336/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1, available at www.iec.ch/members_experts/refdocs.
A list of all parts in the ISO/IEC 30161 series, published under the general title Internet of
Things (IoT) – Data exchange platform for IoT services, can be found on the IEC and
ISO websites.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates that it
contains colours which are considered to be useful for the correct understanding of its
contents. Users should therefore print this document using a colour printer.

– 4 – ISO/IEC 30161-2:2023 © ISO/IEC 2023
INTRODUCTION
ISO/IEC 30161-1:2020 specifies the requirements of an Internet of Things (IoT) data exchange
platform (IoT DEP), which transfers IoT data to and from various IoT devices with small delay.
The IoT DEP provides the following functions: abstraction of communication networks and
lightweight transfer of IoT traffic. However, ISO/IEC 30161-1:2020 specifies only the concept
and structure of the platform for IoT data exchange between an IoT device and an IoT-user
through an IoT DEP. Therefore, it is essential to take into account that IoT devices and
IoT-users are connected to each other through multiple nodal points, when a large number of
IoT devices and IoT-users is included in the IoT system and is deployed over a wide
geographical area.
This document focuses on the transport interoperability among nodal points in an IoT system.
The transport interoperability among nodal points enables data exchange among nodal points
in an IoT system with small overheads or data acquisition with low latency. Requirements for
efficient transfer of IoT data among nodal points are specified. Functional blocks on a nodal
point for the transport interoperability between nodal points in the IoT DEP are specified.
The transport interoperability among nodal points is realized by an IoT DEP network consisting
of multiple nodal points. The transfer of IoT data among nodal points is not affected by a
communication protocol in the transport layer. A nodal point has routing function and forwarding
function to realize the transport interoperability.

INTERNET OF THINGS (IoT) –
DATA EXCHANGE PLATFORM FOR IoT SERVICES –

Part 2: Transport interoperability between nodal points

1 Scope
This part of ISO/IEC
...