ISO 23629-5:2023

INTERNATIONAL ISO
STANDARD 23629-5
First edition
2023-04
UAS traffic management (UTM) —
Part 5:
UTM functional structure
Gestion du trafic des aéronefs sans pilote (UTM) —
Partie 5: Structure fonctionnelle de l'UTM
Reference number
© ISO 2023
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ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 UTM constituent related terms . 1
3.2 UA operation related terms . 2
4 General recommendations .2
5 Classification of UTM functionalities .3
5.1 Functional categories . 3
5.2 UTM functions . 4
5.2.1 General . 4
5.2.2 Registration function . 4
5.2.3 Flight information management function . 4
5.2.4 Operation plan management function . 5
5.2.5 Position data management function . 6
5.2.6 Reporting function . 6
5.2.7 Supplemental data supply function . 6
6 UTM functional structure . 7
6.1 Functional structure and configuration . 7
6.2 Relationships and interactions among UTM functions . 8
Annex A (informative) Design models comparison of UTM frameworks and approach to
determining UTM functions .10
Bibliography .14
iii
Foreword
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iv
Introduction
The market expects rapid growth of civil unmanned aircraft system (UAS) operations in the near future.
To manage growing operations, several states are making an effort to develop UAS traffic management
(UTM). However, this can cause a lack of harmonization among countries and affect safety, security, the
environment, system reliability and economic efficiency.
Some organizations have already created models and references of UTM functional structure, for
example, existing documents and ongoing discussion in other organizations such as ASTM to create the
UTM functional structure. These models are recognised to share a lot of common aspects.
To avoid discordance, the creation of a generic UTM functional structure as a basis of further
developments is needed. The reference functional structure can serve as a mechanism to evaluate and
compare different UTM systems and can foster adoption of better technologies and solutions.
The UTM structure and core functions are to be harmonized with the following perspectives:
— creating terms and definitions related to core functions of UTM referencing existing international
standards;
— listing existing documents and ongoing discussion related to UTM functional structure;
— creating a common UTM structure;
— checking contradiction and inconsistency between terms and definition and UTM structure.
v
INTERNATIONAL STANDARD ISO 23629-5:2023(E)
UAS traffic management (UTM) —
Part 5:
UTM functional structure
1 Scope
This document is dedicated to establishing a common understanding of UTM core functions and
functional structure. It provides a detailed description of the UTM system layer given in the UTM
Framework.
This document excludes:
— role-sharing among entities constituting UTM, which is left to implementations;
— technical methodology of communication or data transaction among core functions;
— business model of players engaging in a function of UTM.
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 21384-4, Unmanned aircraft systems — Part 4: Vocabulary
ISO 23629-12, UAS traffic management (UTM) — Part 12: Requirements for UTM service providers
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 21384-4, ISO 23629-12 and
the following 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 UTM constituent related terms
3.1.1
UTM function
function which constitutes UTM and contributes to safe UA operation
3.1.2
UTM functional structure
UTM structure in functional perspective which consists of mutual complementary and interacting UTM
functions (3.1.1)
3.1.3
registration
making an official record of UA, remote pilot and UA operator by relevant authorities or delegated
entities
3.1.4
UA operation
activity of UA organized to execute a particular mission
3.1.5
flight plan
specified information provided to ATS units, relative to an intended flight or portion of a flight of a
manned aircraft
3.1.6
operation plan
specified information provided to UTM service providers, relative to an intended flight or portion of a
flight of a UA
3.1.7
supplemental data
reference information to conduct safe UA operation (3.1.4) such as geospatial information, meteorological
information and so on
3.2 UA operation related terms
3.2.1
UTM route
reserved airspace where UA with a proper capability and performance are permitted to fly within
3.2.2
UAS geographical zone
volume of airspace defined by the competent authority in which UAS operations are prohibited,
restricted to specific conditions (UA type, specific equipment, effective period, etc.) or authorization by
a geozone manager on a regulatory perspective is required
4 General recommendations
Whilst UTM services are relevant for UTM actors, it is significant to get into the UTM system layer
and to clarify its components for further installation efforts of UTM systems, including evaluation and
verification. This document gives definitions of UTM functions indispensable from the view point of
safety in a manner to enable localization of UTM systems as well. Functions that are not unique to UTM
(for example, communication and database) are not described.
Clause 5 and 6 describe the detailed recommendations.
In Clause 5, classification of UTM functionalities are identified from the perspective of ensuring safety
and to fulfil service layer requirements. Related service providers should comply with requirements
in ISO 23629-12. The high-level functionalities common to UTM systems retain flexibility in designing
system architecture and implementation in accordance with local needs.
In Clause 6, interactions between the UTM functional elements and the UTM functional structure are
provided.
Implementation of UTM systems should consider to include, but not limited to, the UTM functions
described in Clause 5 and to implement the functional structure described in Clause 6 in the following
situations:
— Global efforts to develop UTM systems should use the functional structure for reference purposes,
to resolve certain requirements into their own UTM architectural designs, and to conduct tests and
verifications.
— UTM procurement agencies should use the functional structure as a reference, for procurement
criteria and UTM technology evaluation.
— Possible evaluation/verification frameworks of UTM and any organization willing to evaluate UTM
should use the functional structure for reference purposes, to design conformance criteria for
requirements and compliance to regulations.
5 Classification of UTM functionalities
5.1 Functional categories
UTM functions are identified by reference to available UTM frameworks (see Annex A). UTM is
composed of functional categories as follows:
a) Registration function
To ensure operation of UA with legal authority, the registration function provides a mechanism to
regis
...