IEC 63098-4:2023

IEC 63098-4 ®
Edition 1.0 2023-05
INTERNATIONAL
STANDARD
colour
inside
Transmitting and receiving equipment for radiocommunication –
Radio‑over‑fibre technologies and their performance standard –
Part 4: Radio‑over‑fibre-based indoor distributed antenna system (DAS) for 5G
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IEC 63098-4 ®
Edition 1.0 2023-05
INTERNATIONAL
STANDARD
colour
inside
Transmitting and receiving equipment for radiocommunication –

Radio‑over‑fibre technologies and their performance standard –

Part 4: Radio‑over‑fibre-based indoor distributed antenna system (DAS) for 5G

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.240 ISBN 978-2-8322-6991-6

– 2 – IEC 63098-4:2023 © IEC 2023
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviated terms . 7
3.1 Terms and definitions . 7
3.2 Abbreviated terms . 8
4 RoF based DAS . 9
4.1 System overview . 9
4.2 System configurations . 9
4.2.1 General . 9
4.2.2 Point-to-point configuration . 9
4.2.3 Point-to-multipoint configuration . 10
5 System interfaces . 10
5.1 General . 10
5.2 Electrical interfaces . 11
5.2.1 MHU . 11
5.2.2 RAU . 11
5.3 Optical interfaces . 12
5.3.1 MHU . 12
5.3.2 RAU . 12
6 Testing . 12
6.1 General . 12
6.2 Performance testing . 12
7 Environmental specifications . 13
7.1 General safety . 13
7.2 Laser safety . 13
7.3 Temperature and environment . 13
Annex A (informative) System performance specifications for radio‑over‑fibre-based

indoor distributed antenna system (DAS) for 5G . 14
A.1 General . 14
A.2 Downlink . 14
A.2.1 MHU . 14
A.2.2 RAU . 14
A.3 Uplink . 15
A.3.1 MHU . 15
A.3.2 RAU . 16
Bibliography . 17

Figure 1 – Basic structure of a distributed antenna system (DAS) for 5G . 9
Figure 2 – Point-to-point configuration of DAS . 10
Figure 3 – Point-to-multipoint configuration of DAS . 10
Figure 4 – System interfaces of DAS for 5G . 11

Table 1 – Abbreviated terms . 8

Table 2 – Definitions and functions of the electrical interfaces of the MHU . 11
Table 3 – Definitions and functions of the electrical interfaces of the RAU . 11
Table 4 – Definitions and functions of the optical interfaces of the MHU . 12
Table 5 – Definitions and functions of the optical interfaces of the RAU . 12
Table A.1 – System performance specifications of the MHU for downlink . 14
Table A.2 – System performance specifications of the RAU for downlink . 15
Table A.3 – System performance specifications of the MHU for uplink . 15
Table A.4 – System performance specifications of the RAU for uplink . 16

– 4 – IEC 63098-4:2023 © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
TRANSMITTING AND RECEIVING EQUIPMENT
FOR RADIOCOMMUNICATION – RADIO‑OVER‑FIBRE
TECHNOLOGIES AND THEIR PERFORMANCE STANDARD –

Part 4: Radio‑over‑fibre-based indoor
distributed antenna system (DAS) for 5G

FOREWORD
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IEC 63098-4 has been prepared by IEC technical committee 103: Transmitting and receiving
equipment for radiocommunication. It is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
103/253/FDIS 103/254/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 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts in the IEC 63098 series, published under the general title Transmitting and
receiving equipment for radiocommunication – Radio‑over-fibre technologies and their
performance standard, can be found on the IEC website.
Future documents in this series will carry the new general title as cited above. Titles of existing
documents in this series will be updated at the time of the next edition.
The committee has decided that the contents of this document will remain unchanged until the
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• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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– 6 – IEC 63098-4:2023 © IEC 2023
INTRODUCTION
This document provides the performance standards of the RoF-based 5G indoor distributed
antenna system (DAS) network for cost-effectively offering quality of service (QoS) guaranteed
5G mobile communication services with high bandwidth and low-latency characteristics without
radio shadowing in an indoor environment. First of all, the system overview, system
configurations, and the elements of the system are presented and then the electrical and optical
interfaces for each system element are defined. Finally, the detail system performance
specifications of each element are described for downlink and uplink configurations.

TRANSMITTING AND RECEIVING EQUIPMENT
FOR RADIOCOMMUNICATION – RADIO‑OVER‑FIBRE
TECHNOLOGIES AND THEIR PERFORMANCE STANDARD –

Part 4: Radio‑over‑fibre-based indoor
distributed antenna system (DAS) for 5G

1 Scope
This part of IEC 63098 specifies a radio-over-fibre-based indoor distributed antenna system
(DAS) for fifth generation wireless technology 5G.
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.
IEC 60825-1, Safety of laser products – Part 1: Equipment classification and requirements
IEC 60950-1, Information technology equipment – Safety – Part 1: General requirements
3GPP TS 38.104 V15.3.0 (2018-10), 5G; NR; Base Station (BS) radio transmission and
reception
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 Onlin
...