1、 International Telecommunication Union ITU-T Series YTELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Supplement 24(11/2013) SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS ITU-T Y.2000-series Supplement on N-screen service scenarios for fixed mobil
2、e convergence ITU-T Y-series Recommendations Supplement 24 ITU-T Y-SERIES RECOMMENDATIONS GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS GLOBAL INFORMATION INFRASTRUCTURE General Y.100Y.199 Services, applications and middleware Y.200Y.299 Network aspects Y.
3、300Y.399 Interfaces and protocols Y.400Y.499 Numbering, addressing and naming Y.500Y.599 Operation, administration and maintenance Y.600Y.699 Security Y.700Y.799 Performances Y.800Y.899 INTERNET PROTOCOL ASPECTS General Y.1000Y.1099 Services and applications Y.1100Y.1199 Architecture, access, networ
4、k capabilities and resource management Y.1200Y.1299 Transport Y.1300Y.1399 Interworking Y.1400Y.1499 Quality of service and network performance Y.1500Y.1599 Signalling Y.1600Y.1699 Operation, administration and maintenance Y.1700Y.1799 Charging Y.1800Y.1899 IPTV over NGN Y.1900Y.1999 NEXT GENERATION
5、 NETWORKS Frameworks and functional architecture models Y.2000Y.2099 Quality of Service and performance Y.2100Y.2199 Service aspects: Service capabilities and service architecture Y.2200Y.2249 Service aspects: Interoperability of services and networks in NGN Y.2250Y.2299 Enhancements to NGN Y.2300Y.
6、2399 Network management Y.2400Y.2499 Network control architectures and protocols Y.2500Y.2599 Packet-based Networks Y.2600Y.2699 Security Y.2700Y.2799 Generalized mobility Y.2800Y.2899 Carrier grade open environment Y.2900Y.2999 FUTURE NETWORKS Y.3000Y.3499 CLOUD COMPUTING Y.3500Y.3999 For further d
7、etails, please refer to the list of ITU-T Recommendations. Y series Supplement 24 (11/2013) i Supplement 24 to ITU-T Y-series Recommendations ITU-T Y.2000-series Supplement on N-screen service scenarios for fixed mobile convergence Summary One of the essential benefits of networks is their support f
8、or convergences such as the fixed mobile convergence (FMC) and telecom-broadcasting converged services like the Internet Protocol TV (IPTV), as highlighted in the ITU-T Y.2000-series supplements1. Supplement 24 to the ITU-T Y-series of Recommendations describes various N-screen service case scenario
9、s for FMC. This supplement uses the features defined in Supplement 14 to the ITU-T Y-series of Recommendations (2011), ITU-T Y.2000-series Supplementary service scenarios for fixed-mobile convergence. History Edition Recommendation Approval Study Group Unique ID*1.0 ITU-T Y Suppl. 24 2013-11-15 13 1
10、1.1002/1000/12108-en Keywords FMC, IPTV, NGN, N-screen. _ 1Supplements 1, 3, 6, 7, 8, 9, 10, 13, 14, 15 and 24 of the ITU-T Y-series of Recommendations. *To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommendations unique
11、ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Y series Supplement 24 (11/2013) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommun
12、ication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible 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 Assemb
13、ly (WTSA), which meets every four years, establishes the topics for study by the 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
14、 fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this publication, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this p
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19、p:/www.itu.int/ITU-T/ipr/. ITU 2014 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Y series Supplement 24 (11/2013) iii Table of Contents Page 1 Scope 1 2 References. 1 3 Definitions 2 3.1 Terms defined elsewh
20、ere 2 3.2 Terms defined in this supplement . 2 4 Abbreviations and acronyms 2 5 Conventions 3 6 Overview 3 7 General description of the N-screen services model 3 8 Scenario for N-screen service Case I: Watching the same content on various terminals . 6 8.1 General description and use cases 6 8.2 Ser
21、vice scenarios and mapping: Watching the same content on various terminals . 7 9 Scenario for N-screen service Case II Scenario 1: Continuous use of same content . 9 9.1 General description and use cases 9 9.2 Service scenarios and mapping: Consuming the same content on multi-devices continuously 10
22、 10 Scenario for N-screen service Case II Scenario 2: Based on cloud computing 12 10.1 General description . 12 10.2 Service scenarios and mapping: Consuming the same content on multi-devices continuously 13 11 Scenario for N-screen service Case III Scenario 1: Targeted advertising service to separa
23、te terminal . 15 11.1 General description . 15 11.2 Service scenarios and mapping: Targeted advertising service to separate terminal . 15 11.3 Functional models and procedures . 18 12 Scenario for N-screen service Case III Scenario 2: Collaborative N-screen service, mobile EPG . 21 12.1 General desc
24、ription of scenario for N-screen service Case III: Collaborative N-screen service, mobile EPG . 21 12.2 Service scenario and mapping: Collaborative N-screen service: mobile EPG . 21 13 Scenario for N-screen service Case III Scenario 3: ASMD . 23 13.1 General description: Adaptive source multi-device
25、 (ASMD) 23 13.2 Service scenario and mapping: ASMD 24 14 Security considerations . 26 Appendix I Overall scenario model over FMC . 27 iv Y series Supplement 24 (11/2013) Page Appendix II N-screen construction type models . 28 II.1 Platform type 28 II.2 Device type . 28 II.3 Discrete type . 29 II.4 H
26、ybrid type . 29 Appendix III Example of system model using ITU-T Y-Sup.17 for the cloud-based N-screen service 30 Bibliography. 31 Y series Supplement 24 (11/2013) 1 Supplement 24 to ITU-T Y-series Recommendations ITU-T Y.2000-series Supplement on N-screen service scenarios for fixed mobile converge
27、nce 1 Scope This supplement provides N-screen service scenarios for fixed mobile convergence (FMC). These service scenarios are described using features of key elements of the FMC defined in ITU-T Y-Sup.14. This supplement covers the following areas: overview and general description of the N-screen
28、services model service scenarios for N-screen services. 2 References ITU-T Q.1706 Recommendation ITU-T Q.1706/Y.2801 (2006), Mobility management requirements for NGN. ITU-T Q.1762 Recommendation ITU-T Q.1762/Y.2802 (2007), Fixed-mobile convergence general requirements. ITU-T Y.1901 Recommendation IT
29、U-T Y.1901 (2008), Requirements for the support of IPTV services. ITU-T Y.1910 Recommendation ITU-T Y.1910 (2008), IPTV functional architecture. ITU-T Y.2001 Recommendation ITU-T Y.2001 (2004), General overview of NGN. ITU-T Y.2011 Recommendation ITU-T Y.2011 (2004), General principles and general r
30、eference model for Next Generation Networks. ITU-T Y.2012 Recommendation ITU-T Y.2012 (2006), Functional requirements and architecture of the NGN. ITU-T Y.2018 Recommendation ITU-T Y.2018 (2009), Mobility management and control framework and architecture within the NGN transport stratum. ITU-T Y.209
31、1 Recommendation ITU-T Y.2091 (2008), Terms and definitions for Next Generation Networks. ITU-T Y.2701 Recommendation ITU-T Y.2701 (2007), Security requirements for NGN release 1. ITU-T Y.2702 Recommendation ITU-T Y.2702 (2008), Authentication and authorization requirements for NGN release 1. ITU-T
32、Y-Sup.5 ITU-T Y-series Recommendations Supplement 5 (2008), ITU-T Y.1900-series Supplement on IPTV service use cases. ITU-T Y-Sup.14 ITU-T Y-series Recommendations Supplement 14 (2011), ITU-T Y.2000-series Supplementary service scenarios for fixed-mobile convergence. ITU-T Y-Sup.17 ITU-T Y-series Re
33、commendations Supplement 17 (2012), ITU-T Y.2200-series Functional model of a service overlay network framework which uses the next generation network. 2 Y series Supplement 24 (11/2013) ITU-T Y-Sup.20 ITU-T Y-series Recommendations Supplement 20 (2012), ITU-T Y.1900-series Supplement on scenarios a
34、nd use cases of mobile IPTV. ITU-T FG Cloud TR-1 ITU-T Focus Group on Cloud Computing (2012), Technical Report: Part 1: Introduction to the cloud ecosystem: definitions, taxonomies, use cases and high-level requirements. ITU-T FG Cloud TR-2 ITU-T Focus Group on Cloud Computing (2012), Technical Repo
35、rt: Part 2: Functional requirements and reference architecture. 3 Definitions 3.1 Terms defined elsewhere This supplement uses the following term defined elsewhere: 3.1.1 fixed mobile convergence (FMC) ITU-T Q.1762: In a given network configuration, the capabilities that provide services and applica
36、tion to the end user defined in ITU-T Y.2091 regardless of the fixed or mobile access technologies being used and independent of the users location. In the NGN environment ITU-T Y.2011, it means to provide NGN services to end users regardless of the fixed or mobile access technologies being used. 3.
37、2 Terms defined in this supplement This supplement defines the following terms: 3.2.1 adaptive source multi-device (ASMD): An N-screen service that adjusts accordingly to several devices all using different contents. 3.2.2 N-screen service: An information sharing and content providing service on all
38、 network-enabled devices (TV, mobile phone, tablet, PC, home appliances and cars) that has a seamless and convenient manner. 3.2.3 one source multi-use (OSMU): Sharing same contents or services on more than one screen among multiple kinds of screens. 4 Abbreviations and acronyms This supplement uses
39、 the following abbreviations and acronyms: Ad Advertisement AP Access Point ASMD Adaptive Source Multi-Device EPG Electronic Programme Guide FMC Fixed Mobile Convergence HD High Definition ICT Information and Communication Technology IPTV Internet Protocol TV OSMU One Source Multi-Use PMP Portable M
40、edia Player SD Standard Definition Y series Supplement 24 (11/2013) 3 SDP Service Delivery Platform STB Set Top Box UI User Interface VOD Video on Demand 5 Conventions None. 6 Overview Consumers are today increasingly using multiple devices at the same time. To meet demands, multi-device platforms e
41、nable users to enjoy the same contents or services seamlessly, irrespective of which device or medium is being used. The N-screen, which has recently been gaining attention, falls into the broader concept of a multi-device service. The N-screen is about enabling the user to use multiple devices, whi
42、ch means that it should be made up of integrated platforms for multi-devices. The core element of the N-screen service is a platform that mediates the use of contents or services on multiple devices. N-screen services and multi-device services are often used with the same meaning. Technically speaki
43、ng, however, the multi-device service is a broader concept that encompasses the N-screen service. The multi-device service literally provides the same contents or services on a variety of devices. Along with the evolution of the ICT environment, multi-device services have also been evolving. This su
44、pplement describes various kinds of N-screen service scenarios based on an overall scenario model for FMC ITU-T Y-Sup.14. A summary of ITU-T Y-Sup.14 is shown in Appendix I. 7 General description of the N-screen services model It is by the introduction of the Internet Protocol (IPTV) and smart TV th
45、at broadcasting through Internet has been generalized. The bidirectional service was introduced into broadcasting by using the Internets bidirectional transmission characteristic. Convergence services, combined with telecommunication, information, the web and personalized broadcasting services, then
46、 appeared. Intelligence is a major feature of the smart TV, e.g., smart search, extraction and user interface (UI) technology providing customer-targeted information on the limited size of the TV screen. The N-screen service is a service of the smart TV, providing various kinds of bidirectional, con
47、verged, personalized and intelligent contents and services to multiple fixed or mobile devices. The N-screen service scenarios can be classified into three cases. The first case (Case I) is the sharing of the same contents or services on more than one screen among multiple kinds of screens, as shown
48、 in Figure 7-1. For example, it is a service through which an end user can watch the same contents on various terminals, such as TVs with a service delivery platform (SDP) such as a set top box (STB), PCs, notebooks, portable media players (PMPs) or smart phones. 4 Y series Supplement 24 (11/2013) F
49、igure 7-1 Case I of the N-screen service: one-source multi-use (OSMU) of media The second case (Case II) is continuously consuming the same contents on several devices as shown in Figure 7-2. It is considered to be one of the representative services supporting service mobility among multiple kinds of screens. Figure 7-2 Case II of the N-screen service: Handover or shift Y series Supplement 24 (11/2013) 5 The third ca
