1、 International Telecommunication Union ITU-T Series YTELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Supplement 20(06/2012) SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS ITU-T Y.1900-series Supplement on scenarios and use cases of mobile IPTV ITU
2、-T Y-series Recommendations Supplement 20 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.300Y.399 Interfac
3、es 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, network capabilities an
4、d 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 NETWORKS Framewo
5、rks 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 Numbering, naming and addressing Y.2300Y.2399
6、 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 detai
7、ls, please refer to the list of ITU-T Recommendations. Y series Supplement 20 (06/2012) i Supplement 20 to ITU-T Y-series Recommendations ITU-T Y.1900-series Supplement on scenarios and use cases of mobile IPTV Summary Supplement 20 to ITU-T Y-series Recommendations provides mobile IPTV use cases as
8、 informative illustrations of how mobile IPTV services can be designed, deployed and operated. The use cases are described with sample scenarios and operational procedures of mobile IPTV services. In addition, the use cases detail functional procedures to illustrate how the service scenarios can be
9、supported with IPTV architectural functions. Finally, the use cases have been categorized in terms of service aspects and capability aspects. History Edition Recommendation Approval Study Group 1.0 ITU-T Y Suppl. 20 2012-06-15 13 ii Y series Supplement 20 (06/2012) FOREWORD The International Telecom
10、munication 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 tari
11、ff 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 the ITU-T study groups which, in turn, produce Recomme
12、ndations 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 publicati
13、on, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this publication is voluntary. However, the publication may contain certain mandatory provisions (to ensure, e.g., interoperability or ap
14、plicability) and compliance with the publication 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 with t
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17、cation. 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 2013 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, wi
18、thout the prior written permission of ITU. Y series Supplement 20 (06/2012) 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 Supplement 2 4 Abbreviations and acronyms 2 5 Conventions 2 6 Introduction 2 7 Mobile IPTV use case
19、s from the capability perspective 3 7.1 Terminal mobility support 3 7.2 Personal mobility support . 9 7.3 IPTV content delivery support . 12 7.4 Delivery support of user-created IPTV content 20 8 Mobile IPTV use cases from the service perspective . 26 8.1 n-screen service 26 8.2 Location-based servi
20、ces 33 8.3 Hybrid IPTV services . 36 9 Security considerations . 41 Appendix I Deployment approach to mobile IPTV and mobile TV services . 42 I.1 Mobile TV plus IP 42 I.2 IPTV plus mobile approach 42 I.3 Cellular-based IPTV approach . 43 I.4 Mobile Internet-based IPTV approach . 44 Appendix II Speci
21、fic scenarios and mechanisms for mobile IPTV use cases 45 II.1 3D image delivery service based on multiple access networks 45 II.2 Web-based mobile IPTV service 46 II.3 Mobile IPTV service with cost effective peering . 47 Appendix III Mobile IPTV service with cloud computing technologies 50 III.1 Mo
22、bile IPTV middleware platform collaboration with cloud computing 50 Bibliography. 51 Y series Supplement 20 (06/2012) 1 Supplement 20 to ITU-T Y-series Recommendations ITU-T Y.1900-series Supplement on scenarios and use cases of mobile IPTV 1 Scope This Supplement provides mobile IPTV use cases as i
23、nformative illustrations of how mobile IPTV services can be designed, deployed and operated. The use cases are described with sample scenarios and operational procedures of mobile IPTV services. In addition, the use cases detail functional procedures to illustrate how the service scenarios can be su
24、pported with IPTV architectural functions. Finally, the use cases have been categorized in terms of service aspects and capability aspects. 2 References ITU-T Y.1901 Recommendation ITU-T Y.1901 (2008), Requirements for the support of IPTV services. ITU-T Y.1902 Recommendation ITU-T Y.1902 (2011), Fr
25、amework for multicast-based IPTV content delivery. ITU-T Y.1910 Recommendation ITU-T Y.1910 (2008), IPTV functional architecture. 3 Definitions 3.1 Terms defined elsewhere This Supplement uses the following terms defined elsewhere: 3.1.1 linear TV ITU-T Y.1901: A television service in which a contin
26、uous 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. 3.1.2 mobility b-ITU-T Y.2001: The ability for the user or other mobile entities to communicate and access services irrespective of chang
27、es of the location or technical environment. The degree of 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 telecommunic
28、ation with or without service continuity. 3.1.3 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 users service profile. Note tha
29、t 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. 3.1.4 service mobility b-ITU-T H.510: The ability of a user to use the particular (subscribed) service irrespective of the loca
30、tion of the user and the terminal that is used for that purpose. 3.1.5 terminal mobility b-ITU-T Q.1761: The ability of a terminal to access telecommunication services from different locations and while in motion, and the capability of the network to identify and locate that terminal. 2 Y series Sup
31、plement 20 (06/2012) 3.2 Terms defined in this Supplement This Supplement defines the following terms: 3.2.1 horizontal mobility: Mobility within the same access network technology. 3.2.2 vertical mobility: Mobility between different access network technologies. 4 Abbreviations and acronyms This Sup
32、plement uses the following abbreviations and acronyms: AP Access Point BS Base Station BTS Base Transceiver Station DMB Digital Multimedia Broadcasting EPG Electronic Programme Guide GSM Global System for Mobile communication GSP Global Positioning System HD High-Definition IPsec Internet Protocol s
33、ecurity protocol LBS Location-based Service P2P Peer-to-Peer PDA Personal Digital Assistant QCIF Quarter Common Intermediate Format QoS Quality of Service UCC User-created Content USIM Universal Subscriber Identity Module VoD Video on Demand VPN Virtual Private Network WiBro Wireless Broadband Wi-Fi
34、 Wireless Fidelity WiMAX Worldwide Interoperability for Microwave Access 5 Conventions None. 6 Introduction Mobile IPTV is an application of IPTV as specified in ITU-T Y.1901. It applies to cases wherein the end-user IPTV terminal device receives the IPTV content via an IPTV-enabled mobile network.
35、It must be able to communicate and access the IPTV services regardless of the changes of location or technical environment. This Supplement describes use cases for the mobile IPTV services with deployment examples and operational procedures of IPTV functions. While comprehensive IPTV use cases are d
36、escribed in Y series Supplement 20 (06/2012) 3 b-ITU-T Y.Sup5, this Supplement focuses on which use cases should be supported for mobile IPTV and how to support them with the IPTV functions defined in ITU-T Y.1910. 7 Mobile IPTV use cases from the capability perspective 7.1 Terminal mobility support
37、 7.1.1 Horizontal mobility support in linear TV service Linear TV service is a television service wherein a continuous stream flows in real time from the service provider to the terminal device. While receiving the linear TV content, the terminal device can move to different coverage of the base sta
38、tions (BSs) in the same access network technology (i.e., horizontal mobility). This scenario describes a use case of linear TV service to support the horizontal mobility of the IPTV terminal devices. Figure 7-1 below depicts a sample scenario for linear TV service with horizontal mobility. Servicepr
39、oviderContentproviderMobile networkBase station BSeamless linearTV serviceBase station ACellular phone(Carol)Y Suppl.20(12)_F7-1CarolFigure 7-1 Linear TV service with horizontal mobility support In this scenario, an IPTV end-user uses linear TV service while changing locations. As the end-user chang
40、es location, horizontal mobility takes place, and the IPTV content is provided seamlessly. The operational procedures of the scenario are as follows: 1) The cellular phone of Carol who is an IPTV service subscriber accesses the mobile network through BS-A, which is the nearest one, while she moves o
41、n foot. 2) Carol reaches a linear TV service and selects the news content she wants to view after the IPTV service provider identification and IPTV service detection procedures. 3) The selected news stream starts to deliver to the cellular phone, and she keeps watching the news while she walks. 4) A
42、fter a few minutes, her cellular phone goes out of the coverage of BS-A, and the connected base station is changed from BS-A to BS-B as the most appropriate one accessible by the cellular phone and with sufficient resource. Carol keeps watching the news seamlessly. The following figure shows a proce
43、dural diagram of IPTV functions of linear TV service with horizontal mobility. 4 Y series Supplement 20 (06/2012) Figure 7-2 Use case of linear TV service with horizontal mobility 1) IPTV content (video, audio, data, etc.) with related metadata and content protection data are provided by the content
44、 provider, and are delivered to the IPTV service provider. 2) The service provider then formats the data prepared by the content provider into IP packets, and controls the programme schedule and distribution. Then, the scheduled channel information is provided to the end-users, indicating the conten
45、t is ready for consumption. 3) When an end-user wants to access the linear TV service or selects a channel, the request is sent to the service provider. This procedure may include service negotiation (e.g., quality of service (QoS), price, etc.) and service availability confirmation procedures. 4) I
46、f the end-user is granted access to the linear TV service, the service provider interacts with the network provider to transmit the requested content. This procedure may include reserving and allocating network resources to guarantee the contracted service level. 5) Upon completion of step 4, the se
47、rvice provider supplies channel access information (e.g., the multicast address assigned to the requested channel) to the end-user. Then he or she can access and watch the channel. Note that steps 1 to 5 are the same as those depicted in Figure 6-2 of b-ITU-T Y.Sup5. 6) At horizontal mobility, the e
48、nd-user is supplied with new channel access information for the visiting access network so that he or she continues to access and watch the channel. 7.1.2 Support for mobility between different broadcasting regions The IPTV service provider may provide IPTV service to the IPTV terminal devices resid
49、ing in different regions supported with different IPTV contents. In providing this type of IPTV service on wireless/mobile network environments, an IPTV service provider should perform the following: Separate the mobile network into broadcasting regions consisting of wireless access nodes. Assign a set of IPTV contents to each broadcasting region. The list of IPTV contents may be different for each broadcasting region. Transmit IPTV electronic programme guide (EPG) content
