ISO/IEC 15045-4-1:2024

ISO/IEC 15045-4-1
Edition 1.0 2024-12
INTERNATIONAL
STANDARD
colour
inside
Information technology – Home Electronic System (HES) gateway –
Part 4-1: Structure – Structural class and module requirements

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ISO/IEC 15045-4-1
Edition 1.0 2024-12
INTERNATIONAL
STANDARD
colour
inside
Information technology – Home Electronic System (HES) gateway –

Part 4-1: Structure – Structural class and module requirements

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 35.200; 35.240.99 ISBN 978-2-8327-0001-3

– 2 – ISO/IEC 15045-4-1:2024 © ISO/IEC 2024
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
0.1 Overview. 6
0.2 Relation to existing work . 7
1 Scope . 8
2 Normative references . 8
3 Terms, definitions and abbreviated terms . 9
3.1 Terms and definitions . 9
3.2 Abbreviated terms . 10
4 Conformance . 10
5 HES gateway system structural classes . 11
5.1 Summary of HES gateway system . 11
5.2 HES gateway system baseline requirements . 12
5.2.1 Rationale for baseline requirements. 12
5.2.2 HES gateway system baseline requirements . 12
5.2.3 HES gateway module baseline requirements . 12
5.2.4 HAN interface module requirements . 12
5.2.5 WAN interface module requirements . 12
5.2.6 Binding map requirements . 12
5.2.7 Service module requirements . 12
5.2.8 Identification service requirements. 13
5.3 HES gateway system structural implementation configurations . 13
5.3.1 Rationale for HES gateway system configuration . 13
5.3.2 Simple gateway configuration . 13
5.3.3 Complex integral gateway configuration . 14
5.3.4 Complex modular gateway system configuration . 15
5.3.5 Interconnected gateway system configuration . 15
Annex A (normative) Requirements of interfaces and services . 16
A.1 HAN interface module requirements . 16
A.2 WAN interface module requirements . 17
A.2.1 General . 17
A.2.2 WAN interface objects and actions . 18
A.3 Binding map service requirements . 18
A.4 Service module requirements . 20
A.5 Identification service requirements . 21
Bibliography . 22

Figure 1 – ISO/IEC 15045-4-1 within the core interoperability and HES gateway
standards . 7
Figure 2 – HES gateway documents and HES gateway system . 11
Figure 3 – Two HANs . 13
Figure 4 – One WAN and one HAN . 13
Figure 5 – Two or more WANs, one HAN . 14
Figure 6 – One WAN, two or more HANs. 14
Figure 7 – Three or more HANs . 14

Figure 8 – Two or more WANs, two or more HANs . 14
Figure 9 – Complex modular HES gateway system . 15
Figure 10 – Interconnected HES gateway system . 15
Figure A.1 – HAN interface module block diagram . 16
Figure A.2 – HAN interface module handling of data exchange . 17
Figure A.3 – WAN interface module block diagram . 17
Figure A.4 – WAN interface module handling of data exchange . 18
Figure A.5 – Binding map service block diagram . 19
Figure A.6 – Binding map handling of data exchange . 20
Figure A.7 – Service module block diagram . 20
Figure A.8 – Service module handling of data exchange . 21

Table A.1 – WAN interface module objects . 18
Table A.2 – WAN interface module channel objects . 18

– 4 – ISO/IEC 15045-4-1:2024 © ISO/IEC 2024
INFORMATION TECHNOLOGY –
HOME ELECTRONIC SYSTEM (HES) GATEWAY –

Part 4-1: Structure – Structural class and module requirements

FOREWORD
1) ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission)
form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC
participate in the development of International Standards through technical committees established by the
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all such patent rights.
ISO/IEC 15045-4-1 has been prepared by subcommittee 25: Interconnection of information
technology equipment, 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-SC25/3191/CDV JTC1-SC25/3258/RVC

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, and the ISO/IEC Directives, JTC 1 Supplement
available at www.iec.ch/members_experts/refdocs and www.iso.org/directives.

A list of all parts in the ISO/IEC 15045 series, published under the general title Information
technology – Home Electronic System (HES) gateway, 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.

– 6 – ISO/IEC 15045-4-1:2024 © ISO/IEC 2024
INTRODUCTION
0.1 Overview
The Home Electronic System (HES) is a set of standards that supports communication, control,
and monitoring applications for homes and buildings. However, homes and buildings present a
heterogeneous and evolving networked environment, where many of these networks and
applications (including some that are based on HES standards) are not directly interoperable
with each other. HES standards achieve interoperability through the ISO/IEC 15045 series that
relies on the ISO/IEC 18012 series to support functional interworking among the dissimilar
home devices, applications, protocols, and networks found in this environment. The
ISO/IEC 15045 series and ISO/IEC 18012 series were created to render all protocols
interoperable.
The HES gateway enables an open and adaptable market for incompatible products by
specifying a standardized modular system intended to provide interoperability among the
diversity of networks found in homes and buildings. The HES interoperability process does not
require modification of the various networks, applications, or protocols that use it. Appropriate
interworking functions translate network messages through interface modules to a common
lexicon expression that is then exchanged using a private internal network bus protocol. A
protected application platform using a bus protocol supports an expanding array of services for
both the applications and the network.
In summary, the ISO/IEC 15045 series specifies a standardized modular dedicated private
internal network system that includes:
– interfaces (i.e. interface modules) for communication and semantic translation among
dissimilar home area networks (HANs), and between a HAN and external wide area
networks (WANs),
– a platform for supporting a variety of application services (i.e. service modules), and
– a secure communication path among these modular elements with access restricted to the
appropriate elements in order to protect data, safety and privacy.
The purpose of this document is to define the structural classes of gateway modularity and to
aid manufacturers in implementing consistent and interoperable HES gateway systems and
HES gateway modules. Although the HES gateway system is based on the concept of logical
modularity, this document allows distinct configuration choices for the implementation of
gateway physical modularity and the corresponding internal communication pathways. These
configurations include the following four classes (abbreviated names are in parentheses):
a) Class 1: Simple gateway configuration ("Simple")
Manages and controls the communications between two HANs or one HAN and one WAN
within one housing.
b) Class 2: Complex integral gateway configuration ("Complex integral")
Manages and controls the communications among three or more HANs and WANs within
one housing.
c) Class 3: Complex modular gateway system configuration ("Complex modular")
Manages and controls the communications via a private internet event bus among
interoperable modular components that are provided by multiple manufacturers enabling an
unlimited expandability.
d) Class 4: Interconnected gateway system configuration ("Interconnected")
Manages and controls the communications between more than one HES gateway system
so that they operate equivalently to a single HES gateway system.
The primary differences among these four gateway classes are the degree of physical
modularity or degree of integration (i.e. packaging) and the method of communications among
the modular elements.
0.2 Relation to existing work
The HES gateway class configurations are introduced and briefly described in
ISO/IEC 15045-1. In the case of physically separated HES gateway modules (i.e. complex
modular gateway systems), communication among modular elements is provided by a dedicated
private internet serial bus (i.e. Ethernet) as discussed in ISO/IEC 15045-2. The message
content (protocol data unit, PDU) and set of standardized protocols and objects are specified
in ISO/IEC 18012-3 and are known as home electronic system common language message
exchange (HES-CLME). For serial communications between physical modular products, the
home electronic system common language internal protocol (HES-CLIP) is used. For simple
and integral gateway configurations, message communication is accomplished by the home
electronic system common language direct PDU exchange (HES-CLDPE). In both cases, the
same lexicon and event encoding are used.
Figure 1 shows the core interoperability and HES gateway series of standards and where this
document fits into the HES gateway series.

Figure 1 – ISO/IEC 15045-4-1 within the core interoperability
and HES gateway standards
– 8 – ISO/IEC 15045-4-1:2024 © ISO/IEC 2024
INFORMATION TECHNOLOGY –
HOME ELECTRONIC SYSTEM (HES) GATEWAY –

Part 4-1: Structure – Structural class and module requirements

1 Scope
This document specifies a set of physical classes for the HES gateway system. It also specifies
the requirements of HES gateway modules including home area network interface modules,
wide area network interface modules, binding map service and service modules for any class
chosen.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
ISO/IEC 15045-1, Information technology – Home Electronic System (HES) gateway – Part 1:
A residential gateway model for HES
ISO/IEC 15045-2, Information technology – Home Electronic System (HES) gateway – Part 2:
Modularity and protocol
ISO/IEC 15045-3-1, Information technology – Home Electronic System (HES) gateway –
Part 3-1: Privacy, security, and safety – Introduction
ISO/IEC 18012-1, Information technology – Home Electronic System (HES) – Guidelines for
product interoperability – Part 1: Introduction
ISO/IEC 18012-2, Information technology – Home Electronic System (HES) – Guidelines for
product interoperability – Part 2: Taxonomy and application interoperability model
ISO/IEC 18012-3, Information technology – Home Electronic System (HES) – Guidelines for
product interoperability – Part 3: Lexicon
ISO/IEC 18012-4, Information technology – Home Electronic System (HES) – Guidelines for
product interoperability – Part 4: Event encoding
___________
First edition under preparation. Stage at the time of publication: ISO/IEC CDV 18012-3:2024.
First edition under preparation. Stage at the time of publication: ISO/IEC CDV 18012-4:2024.

3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1.1
binding
logical association between objects
3.1.2
event bus
message path within the interoperability domain for transferring events between source and
destination interoperable objec
...