1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T H.723 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (07/2016) SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMS IPTV multimedia services and applications for IPTV IPTV terminal devices IPTV terminal device: Mobile model Recomm
2、endation ITU-T H.723 ITU-T H-SERIES RECOMMENDATIONS AUDIOVISUAL AND MULTIMEDIA SYSTEMS CHARACTERISTICS OF VISUAL TELEPHONE SYSTEMS H.100H.199 INFRASTRUCTURE OF AUDIOVISUAL SERVICES General H.200H.219 Transmission multiplexing and synchronization H.220H.229 Systems aspects H.230H.239 Communication pr
3、ocedures H.240H.259 Coding of moving video H.260H.279 Related systems aspects H.280H.299 Systems and terminal equipment for audiovisual services H.300H.349 Directory services architecture for audiovisual and multimedia services H.350H.359 Quality of service architecture for audiovisual and multimedi
4、a services H.360H.369 Telepresence H.420H.429 Supplementary services for multimedia H.450H.499 MOBILITY AND COLLABORATION PROCEDURES Overview of Mobility and Collaboration, definitions, protocols and procedures H.500H.509 Mobility for H-Series multimedia systems and services H.510H.519 Mobile multim
5、edia collaboration applications and services H.520H.529 Security for mobile multimedia systems and services H.530H.539 Security for mobile multimedia collaboration applications and services H.540H.549 Mobility interworking procedures H.550H.559 Mobile multimedia collaboration inter-working procedure
6、s H.560H.569 BROADBAND, TRIPLE-PLAY AND ADVANCED MULTIMEDIA SERVICES Broadband multimedia services over VDSL H.610H.619 Advanced multimedia services and applications H.620H.629 Ubiquitous sensor network applications and Internet of Things H.640H.649 IPTV MULTIMEDIA SERVICES AND APPLICATIONS FOR IPTV
7、 General aspects H.700H.719 IPTV terminal devices H.720H.729 IPTV middleware H.730H.739 IPTV application event handling H.740H.749 IPTV metadata H.750H.759 IPTV multimedia application frameworks H.760H.769 IPTV service discovery up to consumption H.770H.779 Digital Signage H.780H.789 E-HEALTH MULTIM
8、EDIA SERVICES AND APPLICATIONS Personal health systems H.810H.819 Interoperability compliance testing of personal health systems (HRN, PAN, LAN, TAN and WAN) H.820H.859 Multimedia e-health data exchange services H.860H.869 For further details, please refer to the list of ITU-T Recommendations. Rec.
9、ITU-T H.723 (07/2016) i Recommendation ITU-T H.723 IPTV terminal device: Mobile model Summary Recommendation ITU-T H.723 describes the functionalities of the mobile model Internet protocol television (IPTV) terminal device (TD) for IPTV basic services defined in Recommendation ITU-T H.720. This Reco
10、mmendation describes the required aspects on requirements, capabilities, architecture, and interfaces of mobile model IPTV TD that can consume IPTV services irrespective of changes of the location or technical environment of mobile device. The meaning of mobile model IPTV TD is that the IPTV termina
11、l function (ITF) is implemented on the mobile device such as a smart phone or smart pad, and is connected to the IPTV service provider through wireless or mobile access networks. The quality of IPTV service depends on such parameters as network conditions and terminal capability, etc. The mobile mod
12、el IPTV TD can access an IPTV service provider via wireless networks or mobile access network in the home as well as out of home environments. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T H.723 2016-07-14 16 11.1002/1000/12909 Keywords IPTV, IPTV terminal device, mobile I
13、PTV, mobile model. * To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T H.723 (07/2016) FOREWORD The International Telecommunicati
14、on Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff quest
15、ions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations
16、 on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, t
17、he expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure, e.g., interoperability or a
18、pplicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance wi
19、th the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTSITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or appli
20、cability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to imple
21、ment this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2016 All rights reserved. No part of this publication may be reproduced, by any me
22、ans whatsoever, without the prior written permission of ITU. Rec. ITU-T H.723 (07/2016) iii Table of Contents Page 1 Scope . 1 2 References . 1 3 Definitions 1 3.1 Terms defined elsewhere 1 3.2 Terms defined in this Recommendation . 3 4 Abbreviations and acronyms 3 5 Conventions 4 6 Overview . 5 7 S
23、ervices and key features of mobile model IPTV terminal device 7 7.1 Services for the IPTV TD mobile model 7 7.2 Features of the IPTV TD mobile model . 9 8 Functional architecture of IPTV terminal device (mobile model) 11 9 Specific requirements for mobile model IPTV TD 13 9.1 Functional requirements
24、 of terminal transport functions . 14 9.2 Functional requirements of content delivery client functions 14 9.3 Functional requirements of media client functions 15 9.4 Functional requirements of control client functional block . 15 9.5 Functional requirements of SCP client functions . 15 9.6 Function
25、al requirements of performance monitoring functions . 16 9.7 Functional requirements of terminal device management functions 16 9.8 Functional requirements of application client functions 16 10 Interfaces for mobile model IPTV terminal device 16 10.1 Network interface . 16 10.2 User input interface
26、17 10.3 Output interface 17 10.4 Peripheral device interface . 17 10.5 Security module interface . 18 Annex A General requirements for mobile IPTV services . 19 Appendix I QoS and performance 20 I.1 Quality of service . 20 I.2 Quality and performance assessment . 21 I.3 Quality and performance monit
27、oring . 22 Appendix II Example use cases and service scenarios . 23 II.1 Linear TV service with terminal mobility (horizontal handover) 23 II.2 IPTV broadcast service with personal mobility . 23 II.3 VoD with terminal mobility (vertical handover) 24 II.4 Three-screen service with contents sharing 25
28、 iv Rec. ITU-T H.723 (07/2016) Page II.5 Three-screen service with service mobility 26 II.6 Location based information service 27 Bibliography. 29 Rec. ITU-T H.723 (07/2016) 1 Recommendation ITU-T H.723 IPTV terminal device: Mobile model 1 Scope This Recommendation describes and specifies the functi
29、onalities of the mobile model Internet protocol television (IPTV) terminal device (TD) for IPTV basic services defined in ITU-T H.720. This Recommendation describes the required aspects on requirements, capabilities, architecture, and interfaces of mobile model IPTV TD that can consume IPTV services
30、 irrespective of changes of the location or technical environment of the mobile device. In mobile model IPTV TD, the IPTV terminal function (ITF) is implemented on mobile devices such as smart phones or tablets, and is connected to the IPTV service provider through wireless or mobile access networks
31、. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this document. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; u
32、sers of this document are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendati
33、on does not give it, as a stand-alone document, the status of a Recommendation. ITU-T H.701 Recommendation ITU-T H.701 (2009), Content delivery error recovery for IPTV services. ITU-T H.720 Recommendation ITU-T H.720 (2008), Overview of IPTV terminal devices and end systems. ITU-T H.721 Recommendati
34、on ITU-T H.721 (2015), IPTV terminal devices: Basic model. ITU-T H.722 Recommendation ITU-T H.722 (2014), IPTV terminal device: Full-fledged model. ITU-T H.770 Recommendation ITU-T H.770 (2015), Mechanisms for service discovery and selection for IPTV services. ITU-T X.1191 Recommendation ITU-T X.119
35、1 (2009), Functional requirements and architecture for IPTV security aspects. ITU-T Y.1901 Recommendation ITU-T Y.1901 (2008), Requirements for the support of IPTV services. ITU-T Y.1903 Recommendation ITU-T Y.1903 (2014), Functional requirements of mobile IPTV. ITU-T Y.1910 Recommendation ITU-T Y.1
36、910 (2008), IPTV functional architecture. 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following terms defined elsewhere: 3.1.1 captions ITU-T Y.1901: Captions provide a real-time on-screen transcript of the dialogue as well as any sound effects. 2 Rec. ITU-T H.723 (07/2016
37、) NOTE This service can be provided by means of either textual or graphical supplementary content. The captions and the dialogue are usually in the same language. The service is primarily to assist users having difficulty hearing the sound. Ideally, users may have some control over the position and
38、size of the presentation. Different speakers are distinguished, usually by different colours. 3.1.2 generalized mobility b-ITU-T Y.2001: The ability for the user or other mobile entities to communicate and access services irrespective of changes of the location or technical environment. The degree o
39、f service availability may depend on several factors including the Access Network capabilities, service level agreements between the users home network and the visited network (if applicable), etc. Mobility includes the ability of telecommunication with or without service continuity. 3.1.3 IPTV end
40、system ITU-T Y.1901: A single or set of consumer devices that support IPTV Services (e.g., delivery network gateway, display). 3.1.4 IPTV terminal device (TD) ITU-T Y.1901: A terminal device which has ITF functionality, e.g., a STB. 3.1.5 IPTV terminal function (ITF) ITU-T Y.1901: The end-user funct
41、ion(s) associated with a) receiving and responding to network control channel messages regarding session set-up, maintenance, and teardown, and b) receiving the content of an IP transport from the network and rendering. 3.1.6 linear TV ITU-T Y.1901: A television service in which a continuous stream
42、flows in real time from the service provider to the terminal device and where the user cannot control the temporal order in which contents are viewed. 3.1.7 mobile IPTV ITU-T Y.1903: An application of IPTV as specified in ITU-T Y.1901. It applies to where the IPTV terminal device is connected to the
43、 IPTV Service Provider via an IPTV-enabled mobile network. It must be able to communicate and access services irrespective of changes of the location or technical environment. NOTE There are multiple possible levels of mobility, from nomadism, where IPTV service is resumed only after the move is com
44、plete, to full mobility, where IPTV service is continuous throughout the movement. 3.1.8 mobile network b-ITU-T Q.1762: A network that provides wireless access to its services and supports mobility. 3.1.9 nomadism b-ITU-T Q.1761: Ability of the user to change his network access point after moving; w
45、hen changing the network access point, the users service session is completely stopped and then started again, i.e., there is no handover possible. It is assumed that the normal usage pattern is that users shutdown their service session before moving to another access point or changing terminal. Thi
46、s is the mobility alluded to in the case of fixed mobile convergence. 3.1.10 personal mobility b-ITU-T Q.1761: Ability of a user to access telecommunication services at any terminal on the basis of a personal identifier, and the capability of the network to provide those services according to the us
47、ers service profile. Note that personal mobility involves the network capability to locate the terminal associated with the user for the purposes of addressing, routing and charging of the users calls. 3.1.11 service mobility b-ITU-T H.510: The ability of a user to use the particular (subscribed) se
48、rvice irrespective of the location of the user and the terminal that is used for that purpose. 3.1.12 sign language interpretation ITU-T Y.1901: A video service showing an interpreter who uses hand gestures and facial expression to convey the main audio content and dialogue to sign language and lip
49、readers. NOTE This service comes in the form of supplementary video content, usually smaller in image size to that the main video content. Ideally the user can control the position, size and background properties (solid or Rec. ITU-T H.723 (07/2016) 3 transparent and the colour, if solid). It is of sufficient temporal and spatial quality to enable sign reading and lip reading. 3.1.13 subtitles ITU-T Y.1901: Subtitles provide a real-time on-screen transcript of dialog
