1、 International Telecommunication Union ITU-T H.740TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (03/2010) SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMSIPTV multimedia services and applications for IPTV IPTV application event handling Application event handling for IPTV services Recommendation ITU-T
2、 H.740 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 procedures H.240
3、H.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 multimedia services H.3
4、60H.369 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 multimedia collaboration applications and se
5、rvices 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 procedures H.560H.569 BROADBAND, TRIPLE-PLAY AN
6、D ADVANCED MULTIMEDIA SERVICES Broadband multimedia services over VDSL H.610H.619 Advanced multimedia services and applications H.620H.629 IPTV MULTIMEDIA SERVICES AND APPLICATIONS FOR IPTV General aspects H.700H.719 IPTV terminal devices H.720H.729 IPTV middleware H.730H.739 IPTV application event
7、handling H.740H.749IPTV metadata H.750H.759 IPTV multimedia application frameworks H.760H.769 IPTV service discovery up to consumption H.770H.779 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T H.740 (03/2010) i Recommendation ITU-T H.740 Application event handling
8、 for IPTV services Summary Recommendation ITU-T H.740 provides a framework for application event handling for IPTV, such as emergency alert and audience measurement. This Recommendation provides a basic framework for application event model, application event description and notification, metadata m
9、odel, delivery methods and security mechanism for application event for IPTV. History Edition Recommendation Approval Study Group 1.0 ITU-T H.740 2010-03-22 16 Keywords Application event, application event handling, application event services, audience measurement, emergency alert, IPTV. ii Rec. ITU
10、-T H.740 (03/2010) FOREWORD The International Telecommunication 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 r
11、esponsible for studying technical, operating and tariff questions 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 t
12、he ITU-T study groups which, in turn, produce Recommendations 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 collabo
13、rative basis with ISO and IEC. NOTE In this Recommendation, the 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
14、 mandatory provisions (to ensure e.g., interoperability or applicability) 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 requirement
15、s. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU
16、 takes no position concerning the evidence, validity or applicability 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 p
17、roperty, protected by patents, which may be required to implement 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 2010 All rights reser
18、ved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T H.740 (03/2010) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Definitions 1 3.1 Terms defined elsewhere 1 3.2 Terms defined in this Recommendation . 2 4 Abbreviations
19、and acronyms 2 5 Conventions 3 6 Concept of application events . 3 7 Application event handling model 4 7.1 General requirements of application event handling 4 7.2 Application event handling architecture . 4 8 Application event description . 5 8.1 Common alerting protocol 6 9 Application event noti
20、fication 6 10 Metadata for application event handling 7 11 Delivery methods 8 12 Security mechanism for application event 8 Appendix I Delivery methods . 9 Appendix II Scenarios for application event handling 10 II.1 Emergency alert notification scenario 10 II.2 Interactive advertisement and T-comme
21、rce notification scenario 10 II.3 Audience measurement application scenario . 11 Bibliography. 13 Rec. ITU-T H.740 (03/2010) 1 Recommendation ITU-T H.740 Application event handling for IPTV services 1 Scope This Recommendation provides a framework for application event handling for IPTV. An applicat
22、ion event is a specific user interaction or an occurrence related with multimedia content in IPTV. This Recommendation describes general aspects for IPTV application event services, such as emergency alert and audience measurement. This Recommendation provides a basic framework for application event
23、 model, application event description and notification, metadata model, delivery methods and security mechanism for application event for IPTV. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of thi
24、s Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other
25、 references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. IETF RFC 2046 IETF RFC 2046 (1996), Multipurpose Internet Mail Ext
26、ensions (MIME) Part Two: Media Types. 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following terms defined elsewhere: 3.1.1 application b-ITU-T Y.101: A structured set of capabilities, which provide value-added functionality supported by one or more services. 3.1.2 broadcas
27、t b-ITU-T M.60: One-way transmission from one point to two or more other points. 3.1.3 content b-ITU-T T.174: Encoded generic value, media or non-media data. 3.1.4 end-user b-ITU-T Y.1910: The actual user of the products or services. NOTE The end-user consumes the product or service. An end-user can
28、 optionally be a subscriber. 3.1.5 IPTV b-ITU-T Y.1901: Multimedia services such as television/video/audio/text/graphics/ data delivered over IP-based networks managed to support the required level of QoS/QoE, security, interactivity and reliability. 3.1.6 IPTV terminal device b-ITU-T Y.1901: A term
29、inal device which has ITF functionality, e.g., a set-top box. 3.1.7 linear TV b-ITU-T Y.1901: A television service in which a continuous stream 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. 3.1.8
30、 metadata b-ITU-T Y.1901: Structured, encoded data that describe characteristics of information-bearing entities to aid in the identification, discovery, assessment, and management of the described entities. 2 Rec. ITU-T H.740 (03/2010) NOTE EPG metadata has many applications and may vary in depth f
31、rom merely identifying the content package title or information to populate an EPG to providing a complete index of different scenes in a movie or providing business rules detailing how the content package may be displayed, copied, or sold. 3.1.9 service b-ITU-T Y.101: A structure set of capabilitie
32、s intended to support applications. 3.1.10 service provider b-ITU-T M.1400: A general reference to an operator that provides telecommunication services to customers and other users either on a tariff or contract basis. A service provider may or may not operate a network. A service provider may or ma
33、y not be a customer of another service provider. 3.1.11 terminal device (TD) b-ITU-T Y.1901: An end-user device which typically presents and/or processes the content, such as a personal computer, a computer peripheral, a mobile device, a TV set, a monitor, a VoIP terminal or an audiovisual media pla
34、yer. 3.1.12 video-on-demand (VoD) b-ITU-T Y.1901: A service in which the end-user can, on demand, select and view a video content and where the end-user can control the temporal order in which the video content is viewed (e.g., the ability to start the viewing, pause, fast forward, rewind, etc). NOT
35、E The viewing may occur sometime after the selection of the video content. 3.2 Terms defined in this Recommendation This Recommendation defines the following terms: 3.2.1 application event: An application event is every user interaction or occurrence related with multimedia contents in IPTV applicat
36、ions. It includes an emergency event from event notification services. 3.2.2 audience measurement: Measuring how many people are in an audience, usually in relation to television viewership, but also newspaper and magazine readership, and increasingly, usage of websites and IPTV service. NOTE Measur
37、ement may include demographic (e.g., age, gender) and sometimes psychographic information (e.g., personality, values, attitude, interests, lifestyles), to help broadcasters and advertisers determine who is listening, rather than just how many. 3.2.3 set-top box (STB): A device that contains demodula
38、tor, de-multiplexer, decoder, other functionalities and interfaces related to signal reception and presentation of the distributed programme at the subscribers site. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: CAP Common Alerting Protocol EAN Emerg
39、ency Alert Notification IPTV Internet Protocol Television SAME Specific Area Message Encoding STB Set-Top Box TV Television VoD Video on demand XML eXtensible Mark-Up Language Rec. ITU-T H.740 (03/2010) 3 5 Conventions In this Recommendation: The keyword “is required to“ indicates a requirement whic
40、h must be strictly followed and from which no deviation is permitted if conformance to this Recommendation is to be claimed. The keyword “is recommended“ indicates a requirement which is recommended but which is not absolutely required. Thus, this requirement need not be present to claim conformance
41、. The keyword “is not recommended“ indicates a requirement which is not recommended but which is not specifically prohibited. Thus, conformance with this Recommendation can still be claimed even if this requirement is present. The keyword “can optionally“ indicates an optional requirement which is p
42、ermissible, without implying any sense of being recommended. This term is not intended to imply that the vendors implementation must provide the option, and the feature can be optionally enabled by the network operator/service provider. Rather, it means the vendor may optionally provide the feature
43、and still claim conformance with this Recommendation. 6 Concept of application events Every user interaction or every occurrence related to multimedia content in IPTV is called an event. For example, “playing video“, “pressing the red button on the remote controller“, or “metadata has changed“ can b
44、e events. Among the vast and diverse number of events, there are events that are specifically related to applications. These are called application events. New emerging application areas in IPTV require flexible and efficient integration of event information from different sources under various appl
45、ication requirements. One example of an application area in which application events are utilized is audience measurement. Audience measurement for IPTV tracks viewership data on an IPTV terminal device, e.g., set-top box (STB), for content providers and service providers. The viewership data consis
46、ts of the user operation history of audience on IPTV terminal devices. Audience measurement, with end user permission, may allow content providers and service providers to provide audience rating service, track popular programs, craft and target specific advertisements to particular groups of users
47、demonstrating certain surfing patterns. Application measurement can be realized by collecting user events and relevant information to help in providing various kinds of IPTV services. Another case of an application area in which application events are utilized is “intelligent charging“. The multimed
48、ia industry could release content onto IPTV and charge subscribers for the content in a trusted way that they actually use by taking advantage of application event concepts. Usage-based charging can be enabled by notifying the event to accounting, charging, and billing systems. Similarly, IPTV could
49、 enable pay-per-play charging models for games downloaded to a mobile device by applying event notification services. If users lose interest in the game, they could remove the game and find a better one without incurring additional charges or any financial penalty. Another use of application event handling could be in enhancing bandwidth usage by the service provider. It is critical for the telecommunication service providers to manage their bandwidth properly. If content can be adapted to the termin
