IEC 62106-3:2018

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)

IEC 62106-3:2018 defines the Open Data Application (ODA) feature of the Radio Data System (RDS). The ODA feature in essence allows raw data to be transmitted via a transparent data channel from a service provider to a suitably equipped receiver without there being any prior knowledge of the data content by the IEC 62106 standard. This document defines the method of packaging the data within the RDS group structure and the identification of the data (using the Application Identification, AID) such that it can be addressed by an appropriate decoder on the receiver.
IEC 62106-3:2018 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.
• 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.

General Information

• Status: Published
• Publication Date: 25-Sep-2018
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.160.40 - Video systems
• Technical Committee: TC 100 - Audio, video and multimedia systems and equipment
• Current Stage: PPUB - Publication issued
• Completion Date: 26-Sep-2018

Standards Content (Sample)

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)
IEC 62106-3:2018-09(en)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2018 IEC, Geneva, Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form

or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from

either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC

copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or

your local IEC member National Committee for further information.
IEC Central Office Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC

The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes

International Standards for all electrical, electronic and related technologies.
About IEC publications

The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the

latest edition, a corrigenda or an amendment might have been published.
IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org

The stand-alone application for consulting the entire The world's leading online dictionary of electronic and

bibliographical information on IEC International Standards, electrical terms containing 21 000 terms and definitions in

Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional

documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical

iPad. Vocabulary (IEV) online.

IEC publications search - webstore.iec.ch/advsearchform IEC Glossary - std.iec.ch/glossary

The advanced search enables to find IEC publications by a 67 000 electrotechnical terminology entries in English and

variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of

committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been

and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

CISPR.
IEC Just Published - webstore.iec.ch/justpublished

Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc

details all new publications released. Available online and If you wish to give us your feedback on this publication or

also once a month by email. need further assistance, please contact the Customer Service

Centre: [e-mail].
---------------------- Page: 2 ----------------------
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

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 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

---------------------- Page: 4 ----------------------
IEC 62106-3:2018 © IEC 2018 – 3 –
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

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

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.
---------------------- Page: 5 ----------------------
– 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.
---------------------- Page: 6 ----------------------
IEC 62106-3:2018 © IEC 2018 – 5 –
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 RDS2, IEC 62106 has been

restructured as follows:
Part 1: Modulation characteristics and baseband coding
Part 2: RDS message format, coding and definition of RDS features
Part 3: Coding and registration of Open Data Applications ODAs
Part 4: Registered code tables
Part 5: Marking of RDS and RDS2 devices

Part 6: Compilation of technical specifications for Open Data Applications in the public domain

The following future parts are planned:
Part 7: RBDS
Part 8: Universal Encoder Communication Protocol UECP
_______________
Numbers in square brackets refer to the Bibliography.
---------------------- Page: 7 ----------------------
– 6 – IEC 62106-3:2018 © IEC 2018
The original specifications of the RDS system have been maintained and the extra
functionalities of RDS2 have been added.

Obsolete or unused functions from the original RDS standard IEC 62106:2015 have been

deleted. The presentation in Parts 1, 2 and 3 follows the OSI basic reference model for

information processing systems [6].
---------------------- Page: 8 ----------------------
IEC 62106-3:2018 © IEC 2018 – 7 –
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)
1 Scope

This part of IEC 62106 defines the Open Data Application (ODA) feature of the Radio Data

System (RDS).

The ODA feature in essence allows raw data to be transmitted via a transparent data channel

from a service provider to a suitably equipped receiver without there being any prior

knowledge of the data content by the IEC 62106 standard. This document defines the method

of packaging the data within the RDS group structure and the identification of the data (using

the Application Identification, AID) such that it can be addressed by an appropriate decoder

on the receiver.
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 62106 (all parts), Radio Data System (RDS) – VHF/FM sound broadcasting in the

frequency range from 64,0 MHz to 108,0 MHz
3 Terms, definitions, abbreviated terms and conventions
3.1 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 62106-1 apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.2 Abbreviated terms

For the purposes of this document, the abbreviated terms given in IEC 62106-1 and

IEC 62106-2 apply.
3.3 Notation and conventions
The notation and conventions given in IEC 62106-1 apply.
---------------------- Page: 9 ----------------------
– 8 – IEC 62106-3:2018 © IEC 2018
4 ODA usage
4.1 General

ODAs are a very effective and flexible way for adding additional applications to an RDS

service.
A number of different ODAs may exist on any service, subject to capacity.

ODAs now fall into two categories: legacy 37-bit and 21-bit ODAs using group types A or B

and the new higher capacity 56-bit or 7-byte ODA exclusively carried in group type C on data-

streams 1, 2 and 3. The legacy 37-bit and 21-bit ODAs use group type 3A to indicate the

allocated group carrying the ODA, whereas the new 56-bit or 7-byte ODA uses a special

channel allocation mechanism to indicate which channel on data-streams 1, 2 and 3 carries

the ODA. Further information on the coding of group types A, B and C used to convey ODAs,

as well as the tunnelling mechanism for carrying legacy group types A and B within a group

type C on data-streams 1, 2 and 3, can be found in IEC 62106-2.

All ODAs are registered at the appropriate RDS Registration Office and appear in the Open

Data Applications Directory (see Annex A). Each ODA needs to be used in accordance with

the registration details in the ODA Directory.
4.2 ODA group structures

Open Data Applications shall use the format shown in Figure 1 for 37-bit ODA group type A,

Figure 2 for 21-bit ODA group type B and Figure 3 for 56-bit or 7-byte ODA group type C.

Figure 1 – 37-bit ODA group type A structure
Figure 2 – 21-bit ODA group type B structure
Figure 3 – 56-bit or 7-byte ODA group type C structure
---------------------- Page: 10 ----------------------
IEC 62106-3:2018 © IEC 2018 – 9 –
4.3 ODA coding for group type A or B
4.3.1 General

The specific group type used by the ODA (defined by its Application Identification) in any

particular transmission is signalled in group type 3A.

Legacy ODAs can use either 37-bit or 21-bit group type A or B structures as shown in

Figures 1 and 2.

ODAs shall not be designed to operate with a specific application group type code.

The application group type code for legacy RDS data will be chosen by the transmission

operator and will be signalled by the AID group 3A.

A single ODA AID can only be associated with a single application group type code. For

example, a single ODA (defined by an AID) may be associated with group type 5A. This

means the ODA only uses group type 5A and that group type 5A is exclusively reserved for

this ODA.

The 3A group additionally provides 16 bits of application data. ODAs that only require these

16 bits of application data can signal this by setting the application group type code to 3A

indicating no other group is referenced by the ODA.
4.3.2 Group type 3A: ODA Application Identification (AID)

Figure 4 shows the format of type 3A groups. These groups are used to identify the Open

Data Application in use, on a legacy RDS transmission.

Figure 4 – Group type 3A for Application group type code, AID and 16-bits of ODA data

The group type 3A conveys, to a receiver, information about which Open Data Applications

are carried on a particular transmission and i
...