EN 50585:2014
(Main)Communications protocol to transport satellite delivered signals over IP networks
Communications protocol to transport satellite delivered signals over IP networks
This European Standard describes the SAT>IP communication protocol. It enables a SAT>IP server to forward satellite delivered signals to SAT>IP clients over IP networks. The typical use case would be the transport of television programs that were received from the satellite by the SAT>IP server to the SAT>IP client via the IP network. SAT>IP specifies a control protocol as well as the media transport (Figure 1). SAT>IP is not a device specification. The SAT>IP protocol distinguishes between SAT>IP clients and SAT>IP servers. SAT>IP Clients SAT>IP clients may reside in set-top boxes equipped with an IP interface or may be implemented as software applications running on programmable hardware such as Tablets, PCs, Smartphones, Connected Televisions. SAT>IP Servers SAT>IP servers may take various forms ranging from large MDU headends servicing whole buildings or communities to in-home IP multiswitches to simple IP adapters for a set-top box to, ultimately, IP LNBs. Actual devices may be clients or servers or both depending on their feature set.
Kommmunikationsprotokoll zum Transport von Satellitensignalen über IP-Netze
Protocole de communication pour le transport des signaux transmis par satellite sur les réseaux IP
La présente Norme européenne décrit le protocole de communication SAT>IP qui permet à un serveur SAT>IP de transférer les signaux transmis par satellite aux clients SAT>IP sur les réseaux IP. Le scénario d'utilisation type est le transport de programmes TV par satellite entre un serveur SAT>IP et un client SAT>IP sur un réseau IP. SAT>IP spécifie un protocole de contrôle, ainsi que le transport multimédia (voir Figure 1). SAT>IP n'est pas une spécification de dispositif. Le protocole SAT>IP établit une distinction entre les clients SAT>IP et les serveurs SAT>IP. Clients SAT>IP Les clients SAT>IP peuvent résider dans des boîtiers décodeurs munis d'une interface IP ou peuvent être mis en oeuvre sous forme d'applications logicielles s'exécutant sur des matériels programmables tels que: tablettes, PC, smartphones, téléviseurs connectés. Serveurs SAT>IP Les serveurs SAT>IP peuvent prendre différentes formes: du simple adaptateur IP pour boîtier décodeur aux LNB (Low Noise Block) IP en passant par les dispositifs IP multicommutateurs domestiques et les grandes têtes de réseau MDU (Multi Dwelling Unit) desservant des collectivités ou des bâtiments entiers. Les dispositifs actuels peuvent être des clients et/ou des serveurs, selon leurs fonctionnalités.
Komunikacijski protokol za signale, poslane transportnemu satelitu po IP-omrežjih
Standard EN 50585 opisuje komunikacijski protokol SAT>IP. Strežniku SAT>IP omogoča, da signale, prejete prek satelita, pošlje odjemalcem SAT>IP prek IP-omrežja. Običajni primer uporabe je prenos televizijskih programov, ki jih strežnik SAT>IP prejme prek satelita, do odjemalca SAT>IP prek IP-omrežja. SAT>IP določa nadzorni protokol in prenos medijev. Protokol SAT>IP ne predstavlja specifikacije naprave. Protokol SAT>IP razlikuje med odjemalci SAT>IP in strežniki SAT>IP. Odjemalci SAT>IP Odjemalci SAT>IP lahko delujejo v komunikatorjih, opremljenih z vmesnikom IP, lahko pa so implementirani kot aplikacije programske opreme, ki se izvajajo na programirljivi strojni opremi, kot so tablični računalniki, osebni računalniki, pametni telefoni in povezani televizijski sprejemniki. Strežniki SAT>IP Strežniki SAT>IP so lahko različnih oblik: od velikih glavnih sprejemnih postaj MDU, ki strežejo celotnim stavbam ali skupnostim, do domačih IP-stikal za satelitsko distribucijo in preprostih IP-pretvornikov za komunikatorje ter IP-LNB-jev. Dejanske naprave so lahko glede na njihov nabor funkcij odjemalci, strežniki ali oboje.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2014
Komunikacijski protokol za signale, poslane transportnemu satelitu po IP-omrežjih
Communications protocol to transport satellite delivered signals over IP networks
Kommmunikationsprotokoll zum Transport von Satellitensignalen über IP-Netze
Protocole de communication pour le transport des signaux transmis par satellite sur les
réseaux IP
Ta slovenski standard je istoveten z: EN 50585:2014
ICS:
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 50585
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2014
ICS 33.170
English Version
Communications protocol to transport satellite delivered signals
over IP networks
Protocole de communication pour le transport des signaux Kommmunikationsprotokoll zum Transport von
transmis par satellite sur les réseaux IP Satellitensignalen über IP-Netze
This European Standard was approved by CENELEC on 2014-03-24. 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 CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50585:2014 E
Contents Page
Foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviations . 8
3.1 Terms and definitions . 8
3.2 Abbreviations . 9
4 Basic description of SAT>IP system . 10
4.1 SAT>IP concept . 10
4.2 Network topology . 10
4.3 Client functionality . 11
4.4 Specification compliance . 11
4.5 Usage scenarios . 11
5 Protocol specification . 11
5.1 General . 11
5.2 UPnP addressing . 13
5.2.1 General . 13
5.2.2 DHCP addressing . 13
5.2.3 Auto-IP addressing . 13
5.3 UPnP Discovery . 13
5.3.1 General . 13
5.3.2 Simple service description protocol SSDP . 13
5.3.3 Server Advertisements . 14
5.3.4 DEVICE ID negotiation . 16
5.3.5 Client Search Requests . 22
5.4 UPnP Description . 23
5.4.1 General . 23
5.4.2 XML Device Description . 23
5.5 RTSP Control . 26
5.5.1 General . 26
5.5.2 Real time streaming protocol RTSP . 26
5.5.3 Setting up a new session . 28
5.5.4 Starting the playout of a media stream (PLAY) . 33
5.5.5 Maintaining a session (OPTIONS) . 35
5.5.6 Modifying a media stream . 36
5.5.7 Joining an existing stream . 37
5.5.8 Listing available media streams (DESCRIBE) . 37
5.5.9 Closing the session and stopping the playout (TEARDOWN) . 40
5.5.10 RTSP Methods . 41
5.5.11 Uniform Resource Identifyer (URI) . 44
5.5.12 Query Syntax . 44
5.5.13 Example of RTSP sequence diagram . 48
5.5.14 Internet Group Management Protocol (IGMP) . 49
5.5.15 Status Code Definitions . 51
5.5.16 RTCP Announcements . 57
5.5.17 HTTP based requests . 58
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5.6 Media Transport . 58
5.6.1 RTP Transport . 58
5.6.2 HTTP Streaming . 59
5.7 Media Formats . 59
6 Dynamic versus Static Server Operation . 59
6.1 Dynamic Operation (default) . 59
6.2 Static Operation . 59
6.3 Mixed Operation . 60
Annex A (informative) Usage scenarios . 61
A.1 IP Adapter / IP Multiswitch . 61
A.2 IP LNB . 61
A.3 Master STB . 61
A.4 Universal Service Gateway . 62
A.5 IP based SMATV / Multi-Dwelling Units . 62
Annex B (informative) Client Implementation Guidelines . 64
B.1 General . 64
B.2 RTSP Clients . 64
B.2.1 Definition . 64
B.2.2 Client Setup and Configuration Settings . 64
B.2.3 Service Discovery . 65
B.2.4 Channel change implementation . 66
B.3 IGMPv3 Clients . 67
B.3.1 Definition . 67
B.3.2 Client Setup and Configuration Settings . 67
Annex C (informative) Example of SAT>IP Message Exchanges . 70
C.1 Example 1: Unicast Session Setup (no front-end selected) plus three additional channel
changes . 70
C.2 Example 2: Multicast Session Setup with front-end selection and destination address/port . 72
Annex D (informative) Support for DVB-T/-T2 (optional) . 74
D.1 General . 74
D.2 Implementation . 74
Annex E (informative) SAT>IP trademark and certification . 76
E.1 Trademark . 76
E.2 Artwork . 76
E.3 Certification .
...
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