IEC 62106-3:2018

IEC 62106-3 ®
Edition 1.0 2018-09
INTERNATIONAL
STANDARD
Radio data system (RDS) – VHF/FM sound broadcasting in the frequency range
from 64,0 MHz to 108,0 MHz –
Part 3: Usage and registration of Open Data Applications (ODAs)

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IEC 62106-3 ®
Edition 1.0 2018-09
INTERNATIONAL
STANDARD
Radio data system (RDS) – VHF/FM sound broadcasting in the frequency range

from 64,0 MHz to 108,0 MHz –
Part 3: Usage and registration of Open Data Applications (ODAs)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.160.40 ISBN 978-2-8322-6068-5

– 2 – IEC 62106-3:2018 © IEC 2018
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 7
2 Normative references . 7
3 Terms, definitions, abbreviated terms and conventions . 7
3.1 Terms and definitions . 7
3.2 Abbreviated terms . 7
3.3 Notation and conventions . 7
4 ODA usage . 8
4.1 General . 8
4.2 ODA group structures . 8
4.3 ODA coding for group type A or B . 9
4.3.1 General . 9
4.3.2 Group type 3A: ODA Application Identification (AID) . 9
4.3.3 ODA group availability signalled in group type 3A for legacy data . 10
4.4 ODA coding for group type C on data-streams 1, 2 and 3 . 11
4.4.1 General . 11
4.4.2 Group type C ODA Application Identification (AID) to channel number
assignment on data-streams 1, 2 and 3 . 12
5 ODA registration . 12
5.1 General . 12
5.2 ODA-AID codes reserved for testing with no registration being required . 12
Annex A (informative) Open data registration . 13
Bibliography . 20

Figure 1 – 37-bit ODA group type A structure . 8
Figure 2 – 21-bit ODA group type B structure . 8
Figure 3 – 56-bit or 7-byte ODA group type C structure . 8
Figure 4 – Group type 3A for Application group type code, AID and 16-bits of ODA data . 9

Table 1 – ODA group availability signalled in group type 3A for legacy ODAs . 11

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RADIO DATA SYSTEM (RDS) –
VHF/FM SOUND BROADCASTING IN THE FREQUENCY
RANGE FROM 64,0 MHz TO 108,0 MHz –

Part 3: Usage and registration of Open Data Applications (ODAs)

FOREWORD
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International Standard IEC 62106-3 has been prepared by technical area 1: Terminals for
audio, video and data services and contents, of IEC technical committee 100: Audio, video
and multimedia systems and equipment.
This first edition, together with IEC 62106-1, IEC 62106-2, IEC 62106-4, IEC 62106-5 and
IEC 62106-6, cancels and replaces IEC 62106:2015, and constitutes a technical revision.
This edition includes the following significant technical changes with respect to
IEC 62106:2015:
• Provision has been made to carry RDS on multiple data-streams (RDS2).
• For Open Data Applications, in addition to the already existing 37-bit and 21-bit data group
structures a new 56-bit or 7-byte data group structure has been added.

– 4 – IEC 62106-3:2018 © IEC 2018
• New are AF coding below 87,6 MHz (down to 64,1 MHz) using ODA-AID. RT+ can now be
used with RT and eRT, 0x6365, see IEC 62106-6.
The text of this standard is based on the following documents:
CDV Report on voting
100/2911/CDV 100/3057/RVC
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 62106 series, published under the general title Radio data system
(RDS) – VHF/FM sound broadcasting in the frequency range from 64,0 MHz to 108,0 MHz,
can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

INTRODUCTION
Since the mid-1980s a fascinating development has taken place. Most of the multimedia
applications and standards have been created or redefined significantly. Hardware has
become extremely powerful with dedicated software and middleware. In the mid-1980s,
Internet as well as its protocols did not exist. Navigation systems became affordable in the
late 1990s, and a full range of attractive smartphones now exist. The computing power of all
these new products is comparable with that of the mainframe installations in that era.
Listener expectations have grown faster than the technology. Visual experience is now very
important, like the Internet look and feel. Scrolling text or delivering just audio is nowadays
perceived as insufficient for FM radio, specifically for smartphone users. New types of radio
receivers with added value features are therefore required. RDS has so far proven to be very
successful.
FM radio with RDS is an analogue-digital hybrid system, which is still a valid data
transmission technology and only the applications need adaptation. Now the time has come to
solve the only disadvantage, the lack of sufficient data capacity. With RDS2, the need to
increase the data capacity can be fulfilled.
RDS was introduced in the early 1980s. During the introductory phase in Europe, the car
industry became very involved and that was the start of an extremely successful roll-out.
Shortly afterwards, RDS (RBDS) was launched in the USA [1, 2, 3, 4, 5] .
The RDS Forum has investigated a solution to the issue of limited data capacity. For RDS2,
both sidebands around the RDS 57 kHz subcarrier can be repeated a few times, up to three,
centred on additional subcarriers higher up in the FM multiplex while still remaining
compatible with the ITU Recommendations.
The core elements of RDS2 are the additional subcarriers, which will enable a significant
increase of RDS data capacity to be achieved, and then only new additional data applications
will have to be created, using the RDS-ODA feature, which has been part of the RDS standard
for many years.
In order to update IEC 62106:2015 to the specifications of
...