SIST EN 301 192 V1.1.1:2005

SLOVENSKI STANDARD
SIST EN 301 192 V1.1.1:2005
01-november-2005

Digitalna videoradiodifuzija (DVB) – Specifikacija DVB za podatkovno radiodifuzijo

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

Intellectual Property Rights................................................................................................................................5

Foreword ............................................................................................................................................................5

1 Scope........................................................................................................................................................6

2 References................................................................................................................................................7

3 Abbreviations...........................................................................................................................................8

4 Data piping...............................................................................................................................................9

4.1 Data transport specification ............................................................................................................................... 9

4.2 PSI and SI specifications ................................................................................................................................... 9

4.2.1 Data_broadcast_descriptor........................................................................................................................... 9

4.2.2 Stream type................................................................................................................................................... 9

5 Asynchronous data streaming ..................................................................................................................9

5.1 Data transport specification ............................................................................................................................... 9

5.2 PSI and SI specifications ................................................................................................................................. 10

5.2.1 Data_broadcast_descriptor......................................................................................................................... 10

5.2.2 Stream type................................................................................................................................................. 10

6 Synchronous and synchronized data streaming .....................................................................................10

6.1 Data transport specification ............................................................................................................................. 10

6.2 PSI and SI specifications ................................................................................................................................. 12

6.2.1 Data_broadcast_descriptor......................................................................................................................... 12

6.2.2 Stream type................................................................................................................................................. 12

7 Multiprotocol encapsulation ..................................................................................................................12

7.1 Data transport specification ............................................................................................................................. 12

7.2 PSI and SI specifications ................................................................................................................................. 15

7.2.1 Data_broadcast_descriptor......................................................................................................................... 15

7.2.2 Stream type................................................................................................................................................. 16

8 Data carousels ........................................................................................................................................16

8.1 Data transport specification ............................................................................................................................. 16

8.1.1 Structure of DVB data carousel.................................................................................................................. 17

8.1.2 DownloadServerInitiate message ............................................................................................................... 18

8.1.3 DownloadInfoIndication message .............................................................................................................. 19

8.1.4 DownloadDataBlock message.................................................................................................................... 20

8.1.5 DownloadCancel ........................................................................................................................................ 20

8.2 Descriptors....................................................................................................................................................... 20

8.2.1 Descriptor identification and location ........................................................................................................ 20

8.2.2 Type descriptor .......................................................................................................................................... 20

8.2.3 Name descriptor ......................................................................................................................................... 21

8.2.4 Info descriptor............................................................................................................................................ 21

8.2.5 Module link descriptor ............................................................................................................................... 22

8.2.6 CRC32 descriptor....................................................................................................................................... 22

8.2.7 Location descriptor..................................................................................................................................... 23

8.2.8 Estimated download time descriptor .......................................................................................................... 23

8.2.9 Group link descriptor ................................................................................................................................. 23

8.2.10 Private descriptor ....................................................................................................................................... 24

8.3 PSI and SI specifications ................................................................................................................................. 24

8.3.1 Data_broadcast_descriptor......................................................................................................................... 24

8.3.2 Stream type................................................................................................................................................. 25

9 Object carousels.....................................................................................................................................26

9.1 Scope of the object carousels........................................................................................................................... 26

9.2 Data transport specification ............................................................................................................................. 26

9.2.1 Carousel NSAP address ............................................................................................................................. 26

9.3 PSI and SI specifications ................................................................................................................................. 27

9.3.1 Data_broadcast_descriptor......................................................................................................................... 27

9.3.2 Deferred_association_tags_descriptor........................................................................................................ 29

9.3.3 Stream type................................................................................................................................................. 30

10 Decoder models......................................................................................................................................30

Annex A (informative): Registration of private data broadcast systems..........................................32

History..............................................................................................................................................................33

IPRs essential or potentially essential to the present document may have been declared to ETSI. The information

pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found

in ETR 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of

ETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on the ETSI

Pursuant to the ETSI Interim IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No

guarantee can be given as to the existence of other IPRs not referenced in ETR 314 (or the updates on

http://www.etsi.fr/ipr) which are, or may be, or may become, essential to the present document.

This European Standard (Telecommunications series) has been produced by the Joint Technical Committee (JTC) of the

European Broadcasting Union (EBU), Comité Européen de Normalisation ELECtrotechnique (CENELEC) and the

NOTE: The EBU/ETSI JTC was established in 1990 to co-ordinate the drafting of standards in the specific field

of broadcasting and related fields. Since 1995 the JTC became a tripartite body by including in the

Memorandum of Understanding also CENELEC, which is responsible for the standardization of radio and

television receivers. The EBU is a professional association of broadcasting organizations whose work

includes the co-ordination of its members' activities in the technical, legal, programme-making and

programme-exchange domains. The EBU has active members in about 60 countries in the European

Founded in September 1993, the DVB Project is a market-led consortium of public and private sector organizations in

the television industry. Its aim is to establish the framework for the introduction of MPEG-2 based digital television

services. Now comprising over 200 organizations from more than 25 countries around the world, DVB fosters

market-led systems, which meet the real needs, and economic circumstances, of the consumer electronics and the

The present document is designed to be used in conjunction with EN 300 468 [2] and ETR 211 [4]. The DVB System

provides a means of delivering MPEG-2 Transport Streams (TS) via a variety of transmission media. These TSs have

traditionally been oriented to containing MPEG-2 Video and Audio. Data broadcasting is seen as an important extension

of the MPEG-2 based DVB transmission standards. Examples for data broadcasting are the download of software over

satellite, cable or terrestrial links, the delivery of Internet services over broadcast channels (IP tunnelling), interactive

TV etc. Four different application areas with different requirements for the data transport have been identified. For each

application area a data broadcasting profile is specified in the present document. The following is a short description of

- The data broadcast specification profile for data pipes supports data broadcast services that require a simple,

asynchronous, end-to-end delivery of data through DVB compliant broadcast networks. Data broadcast according

to the data pipe specification is carried directly in the payloads of MPEG-2 TS packets

- The data broadcast specification profile for data streaming supports data broadcast services that require a

streaming-oriented, end-to-end delivery of data in either an asynchronous, synchronous or synchronized way

through DVB compliant broadcast networks. Data broadcast according to the data streaming specification is

carried in Program Elementary Stream (PES) packets which are defined in MPEG-2 Systems

- Asynchronous data streaming is defined as the streaming of only data without any timing requirements

- Synchronous data streaming is defined as the streaming of data with timing requirements in the sense that the data

and clock can be regenerated at the receiver into a synchronous data stream (e.g. E1, T1). Synchronized data

streaming is defined as the streaming of data with timing requirements in the sense that the data within the stream

can be played back in synchronization with other kinds of data streams (e.g. audio, video).

- The data broadcast specification profile for multiprotocol encapsulation supports data broadcast services that

require the transmission of datagrams of communication protocols via DVB compliant broadcast networks.

The transmission of datagrams according to the multiprotocol encapsulation specification is done by

encapsulating the datagrams in DSM-CC sections (see ISO/IEC 13818-6 [5]), which are compliant with the

- The data broadcast specification for data carousels supports data broadcast services that require the periodic

transmission of data modules through DVB compliant broadcast networks. The modules are of known sizes and

may be updated, added to, or removed from the data carousel in time. Modules can be clustered into a group of

modules if required by the service. Likewise, groups can in turn be clustered into SuperGroups.

- Data broadcast according to the data carousel specification is transmitted in a DSM-CC data carousel which is

defined in MPEG-2 DSM-CC (see ISO/IEC 13818-6 [5]). This specification defines additional structures and

descriptors to be used in DVB compliant networks. The method is such that no explicit references are made to

- The object carousel specification has been added in order to support data broadcast services that require the

periodic broadcasting of DSM-CC User-User (U-U) Objects through DVB compliant broadcast networks,

specifically as defined by DVB Systems for Interactive Services (SIS) (see ETS 300 802 [10]). Data broadcast

according to the DVB object carousel specification is transmitted according to the DSM-CC Object Carousel and

DSM-CC Data Carousel specification which are defined in MPEG-2 DSM-CC (see ISO/IEC 13818-6 [5]).

a) specific versions of publications (identified by date of publication, edition number, version number, etc.), in

b) all versions up to and including the identified version (identified by "up to and including" before the version

c) all versions subsequent to and including the identified version (identified by "onwards" following the version

d) publications without mention of a specific version, in which case the latest version applies.

A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same

[1] ISO/IEC 13818-1: "Information technology - Generic coding of moving pictures and associated

[2] EN 300 468: "Digital Video Broadcasting (DVB); Specification for Service Information (SI) in

[3] ETR 162: "Digital Video Broadcasting (DVB); Allocation of Service Information (SI) codes for

[4] ETR 211: "Digital Video Broadcasting (DVB); DVB guidelines on implementation and usage of

[5] ISO/IEC 13818-6: "Information technology - Generic coding of moving pictures and associated

audio information - Part 6: Extension for Digital Storage Media Command and Control (DSM-CC)

[6] EN 300 472: "Digital Video Broadcasting (DVB); Specification for conveying ITU-R System B

[7] RFC 1112 (August 1988): "Host extensions for IP multicast", S. Deering, Stanford University.

[8] RFC 1521 (09/23/1993): "MIME (Multipurpose Internet Mail Extensions) Part 1: Mechanisms for

Specifying and Describing the Format of Internet Message Bodies", N. Borenstein, N. Freed.

[9] RFC 1590 (03/02/1994): "Media Type Registration Procedure", J. Postel (Updates RFC1521).

[10] ETS 300 802: "Digital Video Broadcasting (DVB); Network-independent protocols for DVB

[11] ISO/IEC 8802-1/2: "Information technology; Telecommunications and information exchange

[13] ISO 8859: "Information processing - 8-bit single-byte coded graphic character sets, Latin

The data broadcast service shall insert the data to be broadcast directly in the payload of MPEG-2 TS packets.

The data broadcast service may use the payload_unit_start_indicator field and the transport_priority field of the

MPEG-2 Transport Stream packets in a service private way. The use of the adaptation_field shall be MPEG-2

The delivery of the bits in time through a data pipe is service private and is not specified in this specification.

The data broadcast service shall indicate the use of a data pipe by including one or more data_broadcast_descriptors in

SI (see EN 300 468 [2]). Each descriptor shall be associated with a particular data pipe via a component_tag identifier.

In particular, the value of the component_tag field shall be identical to the value of the component_tag field of a

stream_identifier_descriptor (see EN 300 468 [2]) that may be present in the PSI program map section for the stream

data_broadcast_id: this field shall be set to 0x0001 to indicate a DVB data pipe (see ETR 162 [3]).

component_tag: this field shall have the same value as a component_tag field of a stream_identifier_descriptor

(if present in the PSI program map section) for the stream that is used as a data pipe.

The specification of the stream_type in the program map section is not defined in the present document.

The data broadcast service shall insert the data to be broadcast in PES packets as defined by MPEG-2 Systems

ISO/IEC 13818-1 [1]. The PES packets shall be of non-zero length. The mapping of the PES packets into MPEG-2

The asynchronous data streaming specification uses the standard PES packet syntax and semantics with the following

PES_packet_length: this is a 16-bit field which shall be set to a non-zero value.

The data broadcast service shall indicate the use of an asynchronous data stream by including one of more data

broadcast descriptors in SI (see EN 300 468 [2]). Each descriptor shall be associated with a particular stream via a

component_tag identifier. In particular, the value of the component_tag field shall be identical to the value of the

component_tag field of a stream_identifier_descriptor (see EN 300 468 [2]) that may be present in the PSI program map

data_broadcast_id: this field shall be set to 0x0002 to indicate an asynchronous data stream (see ETR 162 [3]).

component_tag: this field shall have the same value as a component_tag field of a stream_identifier_descriptor

(if present in the PSI program map section) for the stream on which the data is broadcast.

The presence of an asynchronous data stream in a service shall be indicated in the program map of that service by setting

The data broadcast service shall insert the data to be broadcast in PES packets as defined by MPEG-2 Systems. The PES

packets shall be of non-zero length. The mapping of the PES packets into MPEG-2 Transport Stream packets is defined

The synchronous and synchronized data streaming specifications use the standard PES packet syntax and semantics with

stream_id: this field shall be set to the value of 0xBD (private_stream_1) or 0xBF (private_stream_2) for synchronous

data streams. For synchronized data streams this value shall be set to 0xBD (private_stream_1).

PES_packet_length: this is a 16-bit field which shall be set to a non-zero value.

The data is inserted in PES packets using the PES_data_packet structure. The syntax and semantics of the

data_identifier: this 8-bit field identifies the type of data carried in the PES data packet. It is coded as in table 2

The data_identifier field shall be set to the same value for each PES packet conveying data in the same data stream.

PTS_extension_flag: this is an 1-bit field. It shall be set to "1" for synchronous data streams. For synchronized data

streams a value of "1" indicates the presence of the PTS_extension field in the PES_data_packet. If the PTS_extension

field is not present for synchronized data streams, this flag shall be set to "0".

output_data_rate_flag: this is an 1-bit field. It shall be set to "0" for synchronized data streams. For synchronous data

streams a value of "1" indicates the presence of the output_rate field in the PES_data_packet. If the output_rate field is

PES_data_packet_header_length: this is a 4-bit field. It shall specify the length of the optional fields in the packet

PTS_extension: this is a 9-bit field. This field extends the PTS conveyed in the PES header of this PES packet. This

field contains the 9-bit Program Clock Reference (PCR) extension as defined in MPEG-2 Systems

(see ISO/IEC 13818-1 [1]) that extends the time resolution of synchronized data PTSs from the MPEG-2 standard

output_data_rate: this is a 28-bit field that shall indicate the bit rate of the regenerated signal for a synchronous data