EN 50478:2007
(Main)Functional receiver specification of satellite digital interactive television with a low data rate return channel via satellite - Modem layer specification
Functional receiver specification of satellite digital interactive television with a low data rate return channel via satellite - Modem layer specification
This standard applies for the interaction channel for interactive television networks using Geostationary Satellites with fixed return channel satellite terminals via low data rate dedicated return link. It specifies the essential elements for the implementation of the interaction channel.
Funktionale Empfängerspezifikation für digitales interaktives Satellitenfernsehen mit Rückkanal niedriger Datenrate über Satellit - Festlegungen Modemschicht
Diese Norm gilt für den Interaktionskanal für interaktive Fernsehnetzwerke mit geostationären Satelliten mit ortsfesten Rückkanal-Endgeräten und festgelegten Rückwegen niedriger Datenrate. Sie legt die grundlegenden Elemente für die Implementierung des Interaktionskanals fest.
Spécification pour le fonctionnement du récepteur pour la télévision interactive par satellite avec une voie de retour à bas débit par satellite - Spécification du modem de la couche
Specifikacija funkcijskega sprejemnika satelitske digitalne interaktivne televizije s povratnim kanalom z nizko podatkovno hitrostjo - Specifikacija modemske plasti
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2007
Specifikacija funkcijskega sprejemnika satelitske digitalne interaktivne televizije s
povratnim kanalom z nizko podatkovno hitrostjo - Specifikacija modemske plasti
Functional receiver specification of satellite digital interactive television with a low data
rate return channel via satellite - Modem layer specification
Funktionale Empfängerspezifikation für digitales interaktives Satellitenfernsehen mit
Rückkanal niedriger Datenrate über Satellit - Festlegungen Modemschicht
Spécification pour le fonctionnement du récepteur pour la télévision interactive par
satellite avec une voie de retour a bas débit par satellite - Spécification du modem de la
couche
Ta slovenski standard je istoveten z: EN 50478:2007
ICS:
33.060.30 Radiorelejni in fiksni satelitski Radio relay and fixed satellite
komunikacijski sistemi communications systems
33.170 Televizijska in radijska Television and radio
difuzija broadcasting
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 50478
NORME EUROPÉENNE
February 2007
EUROPÄISCHE NORM
ICS 33.060.30; 33.170
English version
Functional receiver specification
of satellite digital interactive television
with a low data rate return channel via satellite -
Modem layer specification
Spécification pour le fonctionnement Funktionale Empfängerspezifikation
du récepteur pour la télévision interactive für digitales interaktives
par satellite avec une voie de retour Satellitenfernsehen mit Rückkanal
à bas débit par satellite - niedriger Datenrate über Satellit -
Spécification du modem de la couche Festlegungen Modemschicht
This European Standard was approved by CENELEC on 2006-06-01. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in two official versions (English and German). A version in any other language
made by translation under the responsibility of a CENELEC member into its own language and notified to the
Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50478:2007 E
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 206, Consumer
equipment for entertainment and information and related sub-systems.
The text of the draft was submitted to the Unique Acceptance Procedure and was approved by
CENELEC as EN 50478 on 2006-06-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2007-09-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2009-06-01
__________
– 3 – EN 50478:2007
Contents
Introduction.7
1 Scope .9
2 Normative references .9
3 Definitions, symbols and abbreviations.9
3.1 Definitions.9
3.2 Symbols.10
3.3 Abbreviations.11
3.4 Reference Model for Satellite Interactive Networks.13
3.4.1 Protocol Stack Model.13
3.4.2 System Model.14
3.4.3 Reference System Architecture for SATMODE .15
4 Terminal forward link interface.18
4.1 Broadcast Interface .18
4.1.1 Frequency.18
4.1.2 Modulation/Coding.18
4.1.3 Symbol rate.18
4.1.4 Polarization.18
4.2 Forward Interaction Path .18
4.2.1 Forward Interactive Traffic Data.18
4.2.2 Forward Link signalling .19
5 Terminal return link interface .22
5.1 General.22
5.1.1 Access Method .22
5.1.2 Network.24
5.1.3 Beams.24
5.1.4 Carrier groups.24
5.1.5 Services.25
5.1.6 Classes of service and priority.25
5.1.7 Usage of return link physical resources .25
5.2 Physical Layer Interface .27
5.2.1 Return link synchronisation.27
5.2.2 Return Link Coding and Modulation.37
5.2.3 Frequency and time structuring .50
5.2.4 Power mask.55
5.2.5 Polarisation Return Link SATMODE terminal .56
5.2.6 Return Link Symbol rate .56
5.2.7 Power Spectral Control.56
5.2.8 Programmability, range and granularity of configurable parameters.57
5.3 Data Link Layer Interface .58
5.3.1 Return Data Link Layer and Protocols Stack .58
5.3.2 Description of the MAC protocol .67
6 Security, authentication, encryption.75
7 Software download .76
Annex A (normative) Description of tables syntax .77
Annex B (normative) Definition terminal processing delay D .95
proc_term
Annex C (informative) Typical implementation examples.96
Annex D (informative) SATMODE Project .112
Bibliography.114
Figures
Figure 1 – Layer structure for generic system reference model.13
Figure 2 – A generic system Reference Model for Interactive Systems .14
Figure 3 – Overall system description of SATMODE.16
Figure 4 – Interactive traffic data .17
Figure 5 – Tables of PAT, PMT descriptors.22
Figure 6 – Time and frequency Slotted Aloha.23
Figure 7 – Organisation of the network and spectral resources .26
Figure 8 – Description of delays between SATMODE terminal and HUB.28
Figure 9 – Forward link signalling parameters.29
Figure 10 – Frame start origin .30
Figure 11 – Terminal Operation.32
Figure 12 – Login Procedure .35
Figure 13 – TX pointing procedure .36
Figure 14 – Waveform generation .37
Figure 15 – Randomizer .38
Figure 16 – CRC calculation.38
Figure 17 – Flexible encoder architecture .39
Figure 18 – Equivalent scheme for mode 1 (PCCC).39
Figure 19 – Equivalent scheme for mode 2 (SCCC).40
Figure 20 – Equivalent scheme for mode 3 (CC).40
Figure 21 – Equivalent scheme for mode 4 (QRCC) .40
Figure 22 – Logical implementation of a programmable CC.41
Figure 23 – CC, ring quaternary mode .43
Figure 24 – Mapping of bits .45
Figure 25 – UW Sequence .49
Figure 26 – Organization of time slot
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.