ETSI TR 101 194-1997 Digital Video Broadcasting (DVB) Guidelines for Implementation and Usage of the Specification of Network Independent Protocols for DVB Interactive Services (V1.pdf

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1、TR 1 O1 194 1.1.1 (1997-06) Technical Repon Digital Video Broadcasting (DVB); Guidelines for implementation and usage of the specification of network independent protocols for DVB interactive services STD-ETSI TR 101 LS9-ENGL 1797 m 3900855 0207373 T93 m 2 TR 101 194 Vl.l.l (1997-06) Reference DTWJT

2、C-OODVB-36 (b2000ics.PDF) Keywords DVB, broadcasting, digital, video, TV, protocol ETSI Secretariat Postal address F-O6921 Sophia Antipolis Cedex - FRANCE Office address 650 Route des Lucioles - Sophia Antipolis Valbonne - FRANCE Siret No 348 623 562 00017 - NAF 742 C Association but non lucratif en

3、registre la Sous-Prfecture de Grasse (06) No 7803/88 Tel.: +33 4 92 94 42 O0 Fax: +33 4 93 65 47 16 x.400 c= fr; a=atias; p=ets?Fs=secretariat Internet secretariat et.si.fr htp:/www.etsi.fr Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and

4、 the foregoing restriction extend to reproduction in all media. O European Telecommunications Standards Institute 1997. O European Broadcasting Union 1997. Ail rights reserved. 3 TR 101 194 V1.l.l (1997-06) Contents Intellectual Property Rights 4 Foreword 4 1 2 3 4 4.1 4.2 4.3 5 5.1 5.2 5.3 5.4 5.5

5、6 6.1 6.2 6.3 6.3.1 6.3.2 6.3.3 6.4 6.5 6.6 6.7 6.7.1 6.7.2 6.7.3 6.8 6.9 6.10 Scope 5 References 6 Abbreviations . 7 Use of the interaction channel 9 As part of a bootstrap application (at start-up) From within an interactive application (after st p) When the interaction channel is already in use f

6、or a different telephone number . Logical channels 11 Logical channel S2 . Logical channel S3 . 11 Logical channel S5 . Logical channel S 1 11 . 11 Logical channel S4 . 11 . 11 Protocols . 12 . 12 TCP/IP model . . . 12 . 13 TCP services provided . . 13 TCP connections and ports 14 TCP optional exten

7、sions for high performance networks . 14 User Datagram Protocol (UDP) 15 Point-to-Point Protocol (P . 15 Multilink Point-to-Point Protocol (MP) . SNMP and MIB . 15 SNMP service . Structure of manageme IPCP and assigned numbe CHAP and PAP Digital Storage Media - C SNMP network manage . 17 . 18 . 18 6

8、.10.1 DSM-CC User.to.User . 20 6.10.2 DSM-CC User-to-User object carousels and BIOP . 6.10.3 DSM-CC download . 6.10.4 DSM-CC user compatibility . 22 6.11 UNO-RPC, UNO-CDR, IOR (GIOP and IIOP) . 22 6.12 Object Request Broker (ORB) 22 7.1. 7.1. 8 8.1 8.2 7 7.1.1 Use of the protocol stacks for enhanced

9、 broadcast services 23 7.1 Use of the DSM-CC User-to-User protocol . 23 Data transfer and download 23 Synchronized data transfer or download . 23 Unsynchronized data download or data transfer . . 1 . 2 Network congestion control . 25 Traffic shaping . 25 IDL description of traffic shaping 26 Annex A

10、 (informative): History 28 Bibliography . 27 STD-ETSI TR LOL LSI-ENGL 1797 m 3q00855 0207175 814 9 4 TR 101 194 V1.l.l (1997-06) Intellectual Property Rights ETSI has not been informed of the existence of any Intellectual Property Right (IPR) which could be, or could become essential to the present

11、document. However, pursuant to the ETSI Interim IPR Policy, no investigation, including IPR searches, has been carried out. No guarantee can be given as to the existence of any PRs which are, or may be, or may become, essential to the present document. Foreword This Technical Report (TR) has been pr

12、oduced by the Joint Technical Committee (JTC) of the European Broadcasting Union (EBU), Comit Europen de Normalisation ELECtrotechnique (CENELEC) and the European Telecommunications Standards Institute (ETSI). NOTE: The EBWETSI JTC was established in 1990 to Co-ordinate the drafting of ETSs in the s

13、pecific 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 organizati

14、ons 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 broadcasting area; its headquarters is in Geneva *. * European Broadcasting Union Case Postal

15、e 67 CH-1218 GRAND SACONNEX (Geneva) Switzerland Tel: +4122 717 21 11 Fax: +4122 717 24 81 Digital Video Broadcasting (DVB) Project 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

16、 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 broadcast indust

17、ry. STD*ETSI TR 101 L74-ENGL 1777 3400855 020717b 750 M 5 TR 101 194 V1.l.l (1997-06) 1 Scope The basic requirement of an interaction channel is that the user be able to respond in some way to the Interactive Service (IS). This response may take the form of “voting“ for a particular participant in a

18、 competitor show, “purchasing“ goods demonstrated/advertised in a shopping channel programme, etc. This would be achievable within a one-way (reverse direction) narrow-band path. A higher level of interactivity might require that a user, who has made a response to an IS, be sent an acknowledgement.

19、This might be the case where the consumer has made a credit card purchase from a shopping channel via the basic interaction channel. That consumer would expect to receive an acknowledgement that his credit card transaction had been accepted. This level of interactivity would require a two-way intera

20、ction channel: one in the reverse direction and the other in the forward direction. A further level of interactivity would occur where in response to information in the interactive service, the consumer requests further information on particular topics from the source of the service, or from a centr

21、al database via the source of the IS. This would require that the forward channel be broadband. In this particular example, the reverse path would only need to be a narrow-band one, but it is likely that applications will arise whereby the consumer will need to make a broadband responsekontribution

22、to the IS and also receive a broadband “answer“ from the service source. The present document is intended to explain the ways in which the network independent protocols specified in ETS 300 802 2 can be used in conjunction with an interaction network as specified for instance in ETS 300 801 I to imp

23、lement the full range of Interactive Services (IS) complementing broadcast television services according to the commercial requirements defined in the “Commercial Requirements for Asymmetric Interactive Services supporting Broadcast to the Home with Narrowband Return Channels“ (see bibliography). ST

24、D-ETSI TR 1OL LSq-ENGL 1997 W 31100855 0207377 b77 9 6 TR 101 194 Vl.l.1 (1997-06) 2 Ref ere nces References may be made to: a) specific versions of publications (identified by date of publication, edition number, version number, etc.), in which case, subsequent revisions to the referenced document

25、do not apply; or b) all versions up to and including the identified version (identified by “up to and including“ before the version identity); or c) all versions subsequent to and including the identified version (identified by “onwards“ following the version identity); or d) publications without me

26、ntion 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 prETS 300 801: “Digital Video Broadcasting (DVB); Interaction channel through PSTNISDN. prETS 300 802: “Digital Vi

27、deo Broadcasting (DVB); Network-independent protocols for DVB interactive services“. IEEE 802 (1990): “IEEE Organizational Unique Identifier“. ISO/IEC 13818-1,2, 3: “MPEG-2 Systems, Video and Audio“. DAVIC 1.0 specification part 07 (January 1996): “High and Mid Layer Protocols (Technical Specificati

28、on)“. ISO/IEC 13818-6 (December 1995): “MPEG-2 DSM-CC Specification“. ETS 300 468 (October 1994): “Digital Video Broadcasting (DVB); Specification for Service Information (SI) in DVB systems“. prEN 101 192: “Digital Video Broadcasting (DVB); DVB data broadcasting specification“. RFC 768: “User Datag

29、ram Protocol (UDP)“. RFC 791: “Internet Protocol (IP)“. RFC 793: “Transmission Control Protocol (TCP)“. RFC 1332: “Internet Protocol Control Protocol (IPCP)“. RFC 1661 and RFC 1662: “Point-to-Point Protocol (PPP)“. RFC 1717: “Multilink Point-to-point protocol (MP)“. “Universal Network Object Specifi

30、cation“, Version 1 .O (identical to OMG-UNO Specification for CORBA 2.0). RFC 1157“ “Simple Network Management Protocol (SNMP)“. RFC 1323: “(Transmission Control Protocol (TCP) extensions for high performance)“. RFC 1889: “Real Time Protocol (RTP)“. RFC 1334: “Password Authentication Protocol (PAP)

31、and Challenge Handshake Authentication Protocol (CHAP)“. RFC 1340: “Point-to-Point Protocol (PPP) assigned numbers)“. STD-ETSI TR 301 394-ENGL 3997 3q00855 0207378 523 9 7 TR 101 194 V1.l.l (1997-06) 3 Abbreviations For the purposes of the present document, the following abbreviations apply: API ASN

32、. 1 BCD BER B IOP BIOP CATV CDR CHAP DAVIC DSM DSM-CC U-N DSM-CC U-U DSM-CC DVB GIOP HDLC HFC IETF JJOP IOP IOR Ip IPCP IS ISDN ISP LCN LCP LLC LS B MD MIB MJD MMDS MP MPEG TS MPEG NCP NSAP ORB os1 PAP PPP PSTN RFC RPC RTP SI SIS SMATV SNAP SNMP SRM STB STU Application Programming Interface Abstract

33、 Syntax Notation One Binary Coded Decimal Basic Encoding Rules Broadcast Inter ORB Protocol Broadcast Inter-ORB Protocol (see DSM-CC ISO/IEC13818-6 6) Community Antenna Television Common Data Representation Challenge Handshake Authentication Protocol Digital AudioVIsual Council Digital Storage Media

34、 DSM - CC User-to-Network Digital Storage Media - CC User-to-User DSM - Command and Control Digital Video Broadcasting General Inter-ORB Protocol (see DSM-CC ISO/IEC13818-6 6) High level Data Link Control (protocol) Hybrid Fibre Coax Internet Engineering Task Force Intemet Inter-ORB Protocol inter-O

35、RB Protocol (see DSM-CC ISO/IEC13818-6 6) Interoperable Object Reference (see DSM-CC ISO/IEC13818-6 61) Internet Protocol IP Control Protocol Interactive Service Integrated Services Digital Network IS Provider Local Connection Name Link Control Protocol Link Layer Control Least Significant Bit Messa

36、ge Digest 5 (This is a hash scrambling algorithm) Management information Base Modified Julian Date Multipoint Microwave Distribution System Multilink Point-to-point protocol MPEG Transport Stream Moving Picture Experts Group Network Control Protocol Network Services Access Point Object Request Broke

37、r (see DSM-CC ISO/IEC 138 18-6 61) Open Systems Interconnection Password Authentication Protocol Point-to-Point Protocol Public Switched Telephone Network Request For Comment Remote Procedure Call Real Time Protocol Service Information Systems for Interactive Services Satellite Master Antenna Televi

38、sion Sub Network Attachment Point Simple Network Management Protocol Session and Resource Manager Set Top Box Set Top Unit - - STD-ETSI TR 101 374-ENGL 3777 W 3400855 0207377 4bT 8 TR 101 194 Vl.l.1 (1997-06) TCP TS TV UDP ULP UN UNO UNO-CDR UNO-RPC UTC UU Transmission Control Protocol Transport Str

39、eam Television User Datagram Protocol 8-bit Upper Layer Protocol User-Network (see DSM-CC ISO/IEC13818-6 6) Universal Networked Object UNO - Common Data Representation UNO - Remote Procedure Call Universal Time Co-ordinated User-to-User (w) signalling (see DSM-CC ISO/IEC13818-6 61) STD-ETSI TR 101 L

40、S9-ENGL 1797 3900855 0207LBU LB1 9 TR 101 194 V1.l.l (1997-06) 4 Use of the interaction channel Adding interactivity to the DVB environment brings on some changes in the system setup. A broadcaster is able to transfer information to the end user, using the DVB MPEG-2 transport mechanisms as defined

41、in several DVB related ETSI deliverables. In order to make a real interactive broadcast possible, end user information has to be used. This is possible by feeding back information from the end user to an Interactive Service Provider (ISP). The ISP has contacts with the broadcaster and could even be

42、the same organization as shown in figure 1. - I“ Figure 1: High level system overview for Interactive Services (IS) supporting broadcast to the home with narrowband return channels It is necessaiy to make a standardized way of transfening information from the end user to the ISP. This has been accom

43、plished by on one hand a set of specifications for return channels by DVB (see e.g. ETS 300 801 i) for the lower layers of the OS1 stack and on the other hand the specification for network independent protocols for interaction channels ETS 300 802 2. ETS 300 802 Z consists of protocol stacks for: -

44、sending data from the broadcaster or ISP to the end consumers Set Top Box (STB) via the DVBMPEG-2 data transmission system; sending data from the ISP to the end consumers STB via the interaction channel; sending data from the ISP to the end consumers STB via the interaction channel and vice versa. -

45、 - The basis of ETS 300 802 2 is formed by part 6 of the MPEG-2 standard (ISO/IEC 13818 4) called Digital Storage Media Command and Control (DSM-CC) with for the interaction channel the Internet Protocol (IP) as lower layer and the MPEG-2 Data Caroussels as lower layer for the broadcast channel. Dat

46、a can be content or application control/application communication or other control data such as download. Content can consist of compressed video, compressed stills, compressed audio or computer data like files or whatever other information for the end user. In clause 6 of the present document the p

47、rotocol stacks used are explained. First however in clause 5 the logical channels are explained. They are also used in DAVIC for distinguishing different types of data and communication over networks. In clause 7 a particular case has been extensively described. This is the use of the protocol stack

48、s for the “enhanced broadcast scenario“ where the broadcast programme is used as a basis for interactive TV. Moreover data for managing the STB can be sent over the network. Clause 8 describes a means of providing network congestion control. STDOETSI TR 101 L94-ENGL 1977 = 3400855 0207183 038 = 10 T

49、R 101 194 V1.l.l (1997-06) When an interactive TV session is to be set up, three possibilities arise (see subclauses 4.1,4.2 and 4.3): i) as part of a bootstrap application (at start-up) where the end user initiates the session; 2) from within an interactive application (after start-up) where the ISP asks the end user to take action; 3) when the interaction channel is already in use for a different telephone number where the ISP asks the end user to take action. 4.1 As part of a bootstrap application (at start-up) An interactive TV session