1、 STD-ETSI EN 301 193-ENGL 1998 = 3Y00855 0315310 bT2 EN 30 1 1 93 VI .I .I (1998-07) European Standard (Telewmmunications series) Digital Video Broadcasting (DVB); Interaction channel through the Digital Enhanced Cordless Telecommunications (DECT) STDmETSI EN 301 L93-ENGL 1998 - 3400855 0315311 539
2、2 EN 301 193 V1.l.l (1998-07) Reference DEN/JTC-DVB-35 (bl OOOiCO.PDF) Keywords DVB, broadcastina, diaital, video. interaction, ETSI 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
3、C Association but non lucratif enregctre ia Sous-Prfecture de Grasse (06) No 780388 Tel.: +33 4 92 94 42 O0 Fax: +33 4 93 65 47 16 Internet secretariat O et.s.fr htp:llwww.etsi.fr httpd/www.etsi.org Copyright Notifimtfon No part may be reproduced except as authorized by written permission. The copyr
4、ight and the foregoing restriction extend to reproduction in ail media. Q European Telecommunications Standards Institute 1998. Q European Broadcasting Union 1998. Ai1 rights reserved. 3 EN 301 193 V1.l.l (1 998-07) 1 Contents Intellectual Property Rights 4 Foreword 4 1 2 2.1 2.2 3 4 4.1 4.2 5 5.1 5
5、.2 5.3 5.4 5.4.1 Scope 5 References 5 Normative references . 5 Informative references . 5 Abbreviations . 6 Reference model 7 Protocol stack model 7 System model . 7 DVB interaction channel specification for DECT . 8 System architecture 8 Physical interfaces . 9 Calling procedures . 9 DECT profiles
6、9 Recommended DECT profiles when the DECT infrastructure is external to the home 9 5.4.2 Recommended DECT profiles when the DECT infrastructure is internal to the home 10 5.5 Forced disconnection . 11 Annex A (inpormative): A.l DECT introduction i 12 A.2 DECT standard . 13 Physical (PHL) layer 13 Me
7、dium Access Control (MAC) layer . 14 Data Link Control (DLC) layer 14 Network (NWK) layer . 14 Lower Layer Management Entity (UME) 15 Inter-Working Units (IWU) . 15 A.3 Profiles . 15 Data Services Profiles (DSP) . 17 PPP interworking DSP . 18 Wireless Relay Station (WRS) . 18 DECT Authentication Mod
8、ule (DAM) 18 20 Basic characteristics of DECT . , , 12 A.2.1 A.2.2 A.2.3 A.2.4 A.2.5 A.2.6 A.3.1 A.3.2 A.3.2.1 A.4 AS Annex B (informative): Radio in the local loop Access Profile (RAP) 15 DECT implementation alternatives . 19 STDmETSI EN 301 193-ENGL 1998 3Lt00855 0315333 301 4 EN 301 193 Vi .i .1
9、(1 998-07) Intellectual Property Rights 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 SR O00 314: “Intellectual P
10、roperty Rights (IPRs); Essential, orpotentially Essential, IPRs not$ed to ETSI in respect ofETSI standards“, which is available free of charge from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/www.etsi.fr/ipr or http:/www .etsi.org/ipr). Pursuant to the ETSI IPR P
11、olicy, 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 SR O00 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Europe
12、an Standard (Telecommunications series) has been produced by the Joint Technical Committee (JTC) Broadcast of the European Broadcasting Union (EBU), Comit Europen de Normalisation ELECtrotechnique (CENELEC) and the European Telecommunications Standards Institute (ETSI). NOTE: The EBU/ETSI JTC was es
13、tablished 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 receiver
14、s. 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 broadcasting area; its hea
15、dquarters is in Geneva. European Broadcasting Union CH-1218 GRAND SACONNEX (Geneva) Sw iberland Tel: 41 22 717 21 11 Fax: 41 22 717 24 81 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 i
16、s 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 th
17、e broadcast industry. National transposition dates Date of adoption of this EN: Date of latest announcement of this EN (doa): Date of latest publication of new National Standard or endorsement of this EN (dop/e): Date of withdrawal of any conflicting National Standard (dow): 24 July 1998 31 October
18、1998 30 April 1999 30 April 1999 STD-ETSI EN 301 193-ENGL 1998 3400855 0315314 248 5 EN 301 193 Vl.l.l (1998-07) 1 Scope The present document is the baseline specification for the provision of an interaction channel based on the Digitai Enhanced Cordless Telecommunications (DECT) to Digital Video Br
19、oadcasting (DVB) systems. The DVB Project does not intend to specify an interaction channel solution associated to each broadcast system because the interoperability of different delivery media to transport the interaction channel is desirable. Therefore, the DECT solution for the interaction channe
20、l apply to satellite, cable, MATV, Satellite Master Antenna Television (SMATV), terresaial, microwave or any future DVB broadcasting or disaibution system. The solutions provided in the present document for an interaction channel through the DECT are a part of a wider set of alternatives to implemen
21、t interactive services for DVB systems. 2 References References may be made to: specific versions of publications (identified by date of publication, edition number, version number, etc.), in which case, subsequent revisions to the referenced document do not apply; or all versions up to and includin
22、g the identified version (identified by *up to and including“ before the version identity); or all versions subsequent to and including the identified version (identified by “onwards“ following the version identity); or publications without mention of a specific version, in which case the latest ver
23、sion applies. A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same number. 2.1 111 121 31 141 151 2.2 161 171 181 Normative references ETS 300 802: “Digital Video Broadcasting (DVB); Network-independent protocols for DVB interactive servi
24、ces“. EN 50201: “Interfaces for DVB-1RDs“ CENELEC. ETS 300 765-2 “Digital Enhanced Cordless Telecommunications (DECT); Radio in the Local Loop (RLL) Access Profile (RAP); Part 2 Advanced telephony services“. EN 301 240: “Digitai Enhanced Cordless Telecommunications (DECT); Data Services Profile (DSP
25、); Point-to-Point Protocol (PPP) interworking for internet access and general multi-protocol datagram transport“. ETS 300 700: “Digital Enhanced Cordless Telecommunications (DECT); Wireless Relay Station (WRS)“. Informative references DVB-A008 (October 1995): “Commercial requirements for asymmetric
26、interactive services supporting broadcast to the home with narrow-band return channels“. ETS 300 765-1: “Digital Enhanced Cordless Telecommunications (DECT); Radio in the Local Loop (U) Access Profile (RAP); Part 1: Basic telephony services“. ETS 300 444: “Radio Equipment and Systems (RES); Digitai
27、European Cordless Telecommunications (DECT); Generic Access Profile (GAP)“. ETSI STD-ETSI EN 303 393-ENGL 3998 3400855 O335335 384 6 EN 301 193 Vl.1.1 (1 998-07) 19 DERES-03039: “Radio Equipment and Systems (RES); Digital European Cordless Telecommunications (DECT); DECTilSDN Interworking for Interm
28、ediate System Configuration, Part 1: Interworking SpeciFication and Part 2: Access profile“. ETR 308: “Digital Enhanced Cordless Telecommunications (DECT); Services, facilities and configurations for DECT in the local loop“. ETR 185: “Digital European Cordless Telecommunications (DECT); Data Service
29、s Profile (DSP); Profde overview “ . LW Li 11 112J ETS 300 65 1: “Digital Enhanced Cordless Telecommunications (DECT); Data Services Profile (DSP); Generic data link service;(Service type C, class 2)“. ETS 300 701: “Digital Enhanced Cordless Telecommunications (DECT); Data Services Profile (DSP); Ge
30、neric frame relay service with mobility (service types A and B, class 2)“. 1131 3 Abbreviations For the purposes of the present document, the following abbreviations apply: AN BC CI CTA DAM DECT DSP FP Fr GAP IC IIM IN INA IRD ISDN IWU LAP LLME MAC MATV NIU NTU NWK os1 PHL PP PPP PSTN RAP RF Ru. SMA
31、TV STB STU WRS AudioNideo Broadcast Channel Common Interface Cordless Terminal Adapter DECT Authentication Module Digital Enhanced Cordless Telecommunications Data Services Profide Fixed Part Fixed Termination Generic Access Profile Interaction Channel Interactive Interface Module Interactive Networ
32、k Interactive Network Adapter Integrated Receiver Decoder Integrated Services Digital Network Inter-Working Unit Link Access Protocol Lower Layer Management Entity Medium Access Control Master Antenna Television Network Interface Unit Network Termination Unit Network Open Systems Interconnection Phy
33、sical Portable Part Point to Point Protocol Public Switched Telephone Network Radio in the local loop Access Profile Radio Frequency Radio in the Local Loop Satellite Master Antenna Television Set Top Box Set Top Unit Wireless Relay Station - STD-ETSI EN 301 L93-ENGL 1998 3400855 03L53Lb OLO D 7 EN
34、301 193 V1 .1.1 (1 998-07) 4 Reference model A reference model for the system architecture of narrow-band interaction channels in a broadband scenario (asymmetric interactive services) is presented in this clause. 4.1 Protocol stack model Within the Digital Video Broadcasting (DVB) commercial requir
35、ements for asymmetric interactive services supporting broadcast to the home with narrow-band return channel (see DVB-AOOS SI), a simple communications model has been used to identify the necessity and importance of each commercial requirement consisting of the foilowing layers (the layers do not coi
36、ncide exactly with the Open Systems Interconnection (OSI) layers): Physical layer: Where all the physical (electrical) transmission parameters are defined; Transport layer: Defuies all the relevant data structures and communication protocols like data containers, etc.; Appcation layer: Is the intera
37、ctive application software and runtime environment (e.g. home shopping application, script interpreter, etc.). The present document addresses the lower two layers (the physical and transport layers), leaving the application layer open to competitive market forces. A simplified model of the OS1 layer
38、s was adopted to faciiitate the production of specifications for these nodes. Figure 1 points out the lower layers of the simplified model and identifies some of the key parameters. Following the user requirements for interactive services, no attempt will be made to consider higher layers in the pre
39、sent document ,.-.-.- I Proprietary layers Network independent Higher medium layers -_-_._._.I protocO1s , Access mechanism Packet structure Modulation Channel coding Frequency range Filtering Equaiisation Power Network dependent protocols Figure 1: Layer structure for generic system reference model
40、 The present document addresses the Digital Enhanced Cordless Telecommunications (DECT) specific aspects only. The network-independent protocols are specified separately in ETS 300 802 1 J. 4.2 System model Figure 2 shows the system model which is to be used within DVB for interactive services. In t
41、he system model, two channels are established between the service provider and the user: a) Broadcast Channel (BC): A uni-directional broadband BC including video, audio and data. BC is established from the service provider to the users. It may include the forward interaction path. b) Interaction Ch
42、annel (IC): A bi-directional interaction channel is established between the service provider and the user for interaction purposes. It is formed by: 8 EN 301 193 V1.l.l (1 998-07) Network independent I I Network dependent - Return interaction path (return channel): From the user to the service provi
43、der. It is used to make requests to the service provider or to answer questions. It is a narrow-band Channel. Also commonly known as return channel. Forward interaction path From the service provider to the user. It is used to provide some sort of information by the service provider to the user and
44、any other required communication for the interactive service provision. It may be embedded into the broadcast channel. It is possible that this channel is not required in some simple implementations which make use of the BC for the carriage of data to the user. - Network independent Broadcast Channe
45、l Broadcast channel (DVB Transmission Systems) Broadcast Service Provider / Interactive Service Provider Interaction Channel End User Figure 2: A generic system reference model for interactive systems The user terminal, here named Set Top Box (STB), is formed by the: a) Network Interface Unit (NIU),
46、 consisting of the: 1) Broadcast Interface Module (BIM); 2) Interactive Interface Module (1iM); and b) Set Top Unit (STU). The user terminal provides interfaces for both broadcast and interaction channels. The interface between the user terminai and the interaction network is via the 1u1. 5 DVB inte
47、raction channel specification for DECT A DECT infrastructure can support the implementation of the interaction channel for DVB broadcasting systems by providing a wireless bi-directional communication path between the user terminal and an infrastructure connecting to the service provider. The basic
48、characteristics of DECT are described in annex A. 5.1 System architect Ure The Interactive Interface Module (UM) is implemented through a DECT Portable Part (PP) (see figure 3). The DECT PP can be internai or external to the STB. STD-ETSI EN 30L 193-ENGL 1998 m 3400855 0315318 993 m 9 EN 301 193 V1.
49、l.l (lSQ807) Set Top Box (STB) Set Top Unit (STU , channels ,: DECTPP , : (IIh4) Cd be exteniai to the STB Provider network DECTw : WRS L.? ._ : Figure 3: System architecture when DECT is used as the interaction channel DECT is a wireless access technology, not a complete network or system. Therefore, DEC Fixed Parts (FP) are part of the interaction network. A DECT FP includes an Inter-Working Unit (IWU) which handles the interconnection of DEC with the Interactive Network Adapter (NA) via another interaction
