ISO/IEC 21558-2:2023

Telecommunications and information exchange between systems — Future network architecture — Part 2: Proxy model-based quality of service

This document describes the architectural aspects of Future Network (FN) Quality of Service (QoS) based on an FNProxy model, taking into account the requirements described on ISO/IEC TR 29181-8. It describes: — the concept of future network QoS (FNQoS), — the architectural model of FNQoS system, — the usage of FNQoS system.

Télécommunications et échange d'informations entre systèmes — Architecture du réseau du futur — Partie 2: Qualité de service basée sur un modèle de proxy

General Information

• Status: Published
• Publication Date: 17-Jan-2023
• ICS: 35.100.30 - Network layer
• Technical Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Drafting Committee: ISO/IEC JTC 1/SC 6/WG 7 - Network, transport and future network
• Current Stage: 6060 - International Standard published
• Start Date: 18-Jan-2023
• Due Date: 06-May-2022
• Completion Date: 18-Jan-2023

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD 21558-2
First edition
2023-01
Telecommunications and information
exchange between systems — Future
network architecture —
Part 2:
Proxy model-based quality of service
Télécommunications et échange d'informations entre systèmes —
Architecture du réseau du futur —
Partie 2: Qualité de service basée sur un modèle de proxy
Reference number
ISO/IEC 21558-2:2023(E)
© ISO/IEC 2023

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ISO/IEC 21558-2:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO/IEC 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
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Published in Switzerland
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ISO/IEC 21558-2:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 1
3.1 FNQoS Composition . 1
3.2 Abbreviated terms . 2
4 Concept of FNQoS .3
4.1 Description of FNProxy . 3
4.2 Type of FNProxy . 3
4.3 FNProxy interaction . 4
4.3.1 General . 4
4.3.2 Bi-S based operator . 4
4.3.3 Interaction meaning more than communication . . 4
4.3.4 FNProxy harmony in collaborations. 5
4.4 Composition of FNQoS system . 5
4.4.1 General . 5
4.4.2 Relationships of FNProxies and domains . 5
4.4.3 Engines in FNProxy . 6
4.4.4 FNQoS system . 6
4.4.5 Users of FNQoS system . 7
5 Architectural model of FNQoS systems . 7
5.1 Reference model of FNQoS system . 7
5.2 Usage of FNQoS system . 9
5.2.1 Human-centric usage . 9
5.2.2 Interaction between FNQoS systems . 10
5.2.3 Inter-working with legacy networks. 11
Annex A (informative) Tracking concerns of stakeholders to FNQoS system .13
Annex B (informative) Evolution of FNQoS architecture .15
Bibliography .16
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ISO/IEC 21558-2:2023(E)
Foreword
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 respective organization to deal with particular fields of technical
activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international
organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the
work.
The procedures used to develop this document and those intended for its further maintenance
are described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria
needed for the different types of document should be noted. This document was drafted in
accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives or
www.iec.ch/members_experts/refdocs).
Attention is drawn to the possibility that some of the elements of this document may be the subject
of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent
rights. Details of any patent rights identified during the development of the document will be in the
Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents) or the IEC
list of patent declarations received (see https://patents.iec.ch).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see
www.iso.org/iso/foreword.html. In the IEC, see www.iec.ch/understanding-standards.
This document was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 6, Telecommunications and information exchange between systems.
A list of all parts in the ISO/IEC 21558 series can be found on the ISO and IEC websites.
Any feedback or questions on this document should be directed to the user’s national standards
body. A complete listing of these bodies can be found at www.iso.org/members.html and
www.iec.ch/national-committees.
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ISO/IEC 21558-2:2023(E)
Introduction
This document and ISO/IEC 21559-2 both pertain to the Future Network (FN).
This document analyses and specifies how to define the Future Network Quality of Service (FNQoS)
based on AI-proxy, and how to express the architecture of FNQoS information system based on FNProxy.
The goal of the FNQoS is directly related to ISO/IEC TR 29181-8.
FNQoS architecture not only defines the FNProxy contents of FNQoS, but also describes the necessary
functional support required for the operation of FNQoS system. Further, FNQoS architecture itself is
the basis for the normal operation of the protocol mechanism supporting FNProxy interaction specified
in ISO/IEC 21559-2.
The function of Bidirectional Service (Bi-S) for interaction among FNProxies is the basic element of
the FNQoS system. This document is based on the basic elements of Bi-S using ISO/IEC 19501 and
ISO/IEC/IEEE 42010 to analyse and stipulate the reusable pervasive reference architecture technology
of FNQoS.
The International Organization for Standardization (ISO) and the International Electrotechnical
Commission (IEC) draw attention to the fact that it is claimed that compliance with this document may
involve the use of a patent.
ISO and IEC take no position concerning the evidence, validity and scope of this patent right.
The holder of this patent right has assured ISO and IEC that he/she is willing to negotiate licenses under
reasonable and non-discriminatory terms and conditions with applicants throughout the world. In this
respect, the statement of the holder of this patent right is registered with ISO and IEC. Information may
be obtained from the patent database available at www.iso.org/patents or https://patents.iec.ch.
Attention is drawn to the possibility that some of the elements of this document may be the subject
of patent rights other than those in the patent database. ISO and IEC shall not be held responsible for
identifying any or all such patent rights.
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INTERNATIONAL STANDARD ISO/IEC 21558-2:2023(E)
Telecommunications and information exchange between
systems — Future network architecture —
Part 2:
Proxy model-based quality of service
1 Scope
This document describes the architectural aspects of Future Network (FN) Quality of Service (QoS)
based on an FNProxy model, taking into account the requirements described on ISO/IEC TR 29181-8. It
describes:
— the concept of future network QoS (FNQoS),
— the architectural model of FNQoS system,
— the usage of FNQoS system.
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 21559-2, Telecommunications and information exchange between systems — Future network
protocols and mechanisms — Part 2: Proxy model-based quality of service
3 Terms, definitions and abbreviated terms
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:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org
3.1 FNQoS Composition
3.1.1
Future Network Proxy
FNProxy
element or device to improve Future Network Quality of Service (FNQoS) (3.1.2) in the Future Network
environment
3.1.2
Future Network Quality of Service
FNQoS
set of the comprehensive behaviour effects of services based on interactions among/between two or
more FNProxies to meet the requirements of a Future Network
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ISO/IEC 21558-2:2023(E)
3.1.3
FNQoS System
information system that provides FNQoS based on the FNProxy model
Note 1 to entry: As the FNQoS system is an information system, there are two working modes: the first is the
distribution mode, the second is the central mode. The distribution mode means that the FNQoS system can be
distributed among all FNProxies; the central mode means that the FNQoS system is the centre of all FNProxies.
3.1.4
FNProxy Interface
set of elements that are defined as a named operation that are used to describe the behaviour
3.1.5
Domains in FNQoS system
functional classification in the FNQoS system which can be used by software programs
3.1.6
Engines in FNProxy
program that can actively complete specific tasks in an FNProxy
3.1.7
FNProxy Harmony Relation
FHR
relationship when two FNProxies interact
Note 1 to entry: For the effect evaluation or quantitative calculation of FHR, see ISO/IEC 21559-2:2023, Annex A.
Note 2 to entry: FNProxy Harmony can also be referred to as Machine Harmony or inter-machine Harmony in
order to distinguish that the word "Harmony" has a special spiritual meaning for people.
3.1.8
Multiple FNProxies Harmony Relation
MFHR
relationship of multiple FHRs in an FNQoS system composed of three or more FNProxies
3.1.9
Bidirectional Services at Interaction Reference Point between two FNProxies
Bi-S
specialized service between two FNProxies
Note 1 to entry: The middle position of two FNProxies is called Bi-S interaction reference point.
Note 2 to entry: The interactive service between FNProxies across the Bi-S reference point has the concurrency,
synchronization and bidirectional effect in nature.
Note 3 to entry: The Bi-S is one of the basic technical elements of FNQOS system.
3.2 Abbreviated terms
AI Artificial Intelligence
AIEN Artificial Intelligence Enabled Networking
AL Access Layer
Bi-S Bidirectional Service
CM Conceptual Model
FHR FNProxy Harmony Relation
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ISO/IEC 21558-2:2023(E)
FN Future Network
HMI Human Machine Interface
MFHR Multiple FNProxies Harmony Relation
QoS Quality of Service
RA Reference Architecture
RM Reference Model
4 Concept of FNQoS
4.1 Description of FNProxy
FNProxy has the abilities to provide services for specific FNProxies, and also to give requirements to
other FNProxies. The component software or device that conforms to the FNProxy model includes the
following three functions:
a) dynamic perception of special FNProxy requirements or changes in the environment;
b) negotiate with itself to sign a service contract according to the perceived requirements;
c) execute according to the signed quantity of the contract.
The software that performs each function is called perception, negotiation and execution engine in
FNProxy.
The three engines of an FNProxy periodically perform the following real-time steps:
— The perception engine perceives the requirements from a special FNProxy or the requirements of
environmental changes according to perception strategy.
— The negotiation engine compares the perceived requirements with FNProxy's own capability.
If the perceived requirements can be satisfied by the FNProxy's capability, the FNProxy signs a
service contract with the special FNProxy. Otherwise, according to the negotiation strategy, the
requirements will be transited to other FNProxies.
— After executing according to the contract, the execution engine can put forward relevant
requirements to specific FNProxy or other FNProxy according to the current execution value and
the FNProxy’s own configuration strategy until a new contract is generated.
4.2 Type of FNProxy
There are many software or devices that follow the FNProxy model in an FNQoS system. They are
referred to as respective working FNProxies for specific goals. Any FNProxy has two functions: one
is to provide services for the requirements of other FNProxies; the other is to make service requests
to other FNProxies according to this FNProxy strategy (i.e. to make requirements). Each FNProxy has
the capabilities to provide different types of services. The types of service capability of an FNProxy
is determined by the characteristics of its own capability. Only if the type of service capability of one
FNProxy matches the type of the required service from the other FNProxy, one FNProxy can provide
services for the other FNProxy.
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ISO/IEC 21558-2:2023(E)
4.3 FNProxy interaction
4.3.1 General
The services of each FNProxy are one-way. When there is a pair of FNProxies, the mutual services of
the two FNProxies represent the bidirectional property of their services based on Bi-S reference point.
FNProxy interaction is the objective to improve the effect of the FNQoS system. FNProxy pairs can
achieve bidirectional interaction through an FNProxy interface.
4.3.2 Bi-S based operator
A Bi-S based FNProxy interaction shown on the left in Figure 1 enhances the FNProxy inter
...