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 Y.2239 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (02/2016) SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS Next Generation Networks Service aspects: Service capabili
2、ties and service architecture Requirements for information control networks and related applications Recommendation ITU-T Y.2239 ITU-T Y-SERIES RECOMMENDATIONS GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS GLOBAL INFORMATION INFRASTRUCTURE General Y.100Y.1
3、99 Services, applications and middleware Y.200Y.299 Network aspects Y.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.10
4、99 Services and applications Y.1100Y.1199 Architecture, access, network 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
5、.1799 Charging Y.1800Y.1899 IPTV over NGN Y.1900Y.1999 NEXT GENERATION 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
6、services and networks in NGN Y.2250Y.2299 Enhancements to NGN Y.2300Y.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 F
7、UTURE NETWORKS Y.3000Y.3499 CLOUD COMPUTING Y.3500Y.3999 INTERNET OF THINGS AND SMART CITIES AND COMMUNITIES General Y.4000Y.4049 Definitions and terminologies Y.4050Y.4099 Requirements and use cases Y.4100Y.4249 Infrastructure, connectivity and networks Y.4250Y.4399 Frameworks, architectures and pr
8、otocols Y.4400Y.4549 Services, applications, computation and data processing Y.4550Y.4699 Management, control and performance Y.4700Y.4799 Identification and security Y.4800Y.4899 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T Y.2239 (02/2016) i Recommendation ITU
9、-T Y.2239 Requirements for information control networks and related applications Summary An information control network (ICN) is a logical network providing services over digital television infrastructure characterized by high-reliable data transfer, service management and traffic control. ICN allow
10、s the organization of a trusted environment for the provisioning of mission-critical services, such as emergency management, e-government, e-commerce and e-health, by introducing the ICN operator as a single point of service management. The usage of the digital television infrastructure is effective
11、 in terms of large geographical area coverage. Where next generation network (NGN) is available, ICN typical deployments combine the usage of digital television infrastructure with NGN for an increased service offer while reducing NGN bandwidth requirements for service users (this is extremely relev
12、ant for areas not covered by broadband access). Recommendation ITU-T Y.2239 provides a description of ICN and general characteristics of ICN applications. It then describes requirements of ICN applications and specifies extended or new NGN capability requirements based on the identified requirements
13、. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T Y.2239 2016-02-13 13 11.1002/1000/12708 Keywords Digital television infrastructure, information control networks (ICN), ICN applications, ICN operator, ICN requirements, ICN service, next generation network (NGN), NGN capabil
14、ity requirements, NGN provider. * 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/11.1002/1000/11 830-en. ii Rec. ITU-T Y.2239 (02/2016) FOREWORD The International
15、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 responsible for studying technical, operating a
16、nd 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 the ITU-T study groups which, in turn, produce
17、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 collaborative basis with ISO and IEC. NOTE In this Re
18、commendation, 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 mandatory provisions (to ensure, e.g., intero
19、perability 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 requirements. The use of such words does not suggest tha
20、t compliance with 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, va
21、lidity 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 property, protected by patents, which may be re
22、quired 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 2016 All rights reserved. No part of this publication may be reprod
23、uced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T Y.2239 (02/2016) 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 . 2 4 Abbreviations and acronyms 2 5 Conventions 2 6
24、Introduction . 2 6.1 ICN overview . 2 6.2 Business roles for the provisioning of ICN applications 4 7 General characteristics of ICN applications . 5 7.1 Permanent connectivity 5 7.2 Data synchronization 5 7.3 Synchronous software update . 5 7.4 Rule-based multicasting . 5 7.5 Service management and
25、 security 6 7.6 Logging . 6 7.7 Resiliency . 6 8 Requirements of ICN applications 6 8.1 Information security . 6 8.2 Reliability support 6 8.3 Service management . 6 8.4 Multicasting 7 8.5 Context awareness 7 9 NGN capability requirements for support of ICN applications 7 9.1 Requirements for extens
26、ions or additions to NGN capabilities . 7 9.2 Requirements supported by existing NGN capabilities 8 Bibliography. 9 Rec. ITU-T Y.2239 (02/2016) 1 Recommendation ITU-T Y.2239 Requirements for information control networks and related applications 1 Scope This Recommendation deals with information cont
27、rol networks (ICN) that provide services utilizing digital television (TV) infrastructure, focused on high-reliable data transfer, service management and traffic control. ICN allows the organization of a trusted environment for the provisioning of mission-critical services, such as emergency managem
28、ent, e-government, e-commerce, e-health, by introducing the ICN operator as a single point of service management. This Recommendation provides a description and general characteristics of ICN applications, i.e., applications which use the capabilities of ICN. It also describes requirements of ICN ap
29、plications and, based on the identified requirements, specifies extended or new next generation network (NGN) capability requirements with respect to the NGN capabilities as described in ITU-T Y.2201. The scope of this Recommendation includes: an overview of ICN including business roles for the prov
30、isioning of ICN applications; general characteristics of ICN applications; requirements of ICN applications; requirements of extended or new NGN capabilities based on the requirements of ICN applications. NOTE This Recommendation covers the requirements of NGN capabilities for support of ICN applica
31、tions (typical deployment of ICN with NGN). The capability requirements of the whole ICN infrastructure (the digital television infrastructure is also used in a typical deployment of ICN) are out of scope of this Recommendation. 2 References The following ITU-T Recommendations and other references c
32、ontain provisions which, through reference in this text, constitute provisions of this 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
33、 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 Recommendation does not give it, as a stand-alone document, the status of
34、 a Recommendation. ITU-T Y.2201 Recommendation ITU-T Y.2201 (2009), Requirements and capabilities for ITU-T NGN. 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following term defined elsewhere: 3.1.1 next generation network (NGN) b-ITU-T Y.2001: A packet-based network able to
35、 provide telecommunication services and able to make use of multiple broadband, QoS-enabled transport technologies and in which service-related functions are independent from underlying transport-related technologies. It enables unfettered access for users to networks and to competing 2 Rec. ITU-T Y
36、.2239 (02/2016) service providers and/or services of their choice. It supports generalized mobility which will allow consistent and ubiquitous provision of services to users. 3.2 Terms defined in this Recommendation This Recommendation defines the following terms: 3.2.1 information control network (
37、ICN): A logical network providing services over digital television infrastructure characterized by high-reliable data transfer, service management and traffic control. NOTE Where next generation network (NGN) is available, ICN typical deployments combine the usage of digital television infrastructur
38、e with NGN for an increased service offer. In some technically justified cases, NGN may fully replace the digital television infrastructure. 3.2.2 ICN operator: The operator of ICN that provides and manages the ICN services and controls their service provisioning. 3.2.3 ICN service: A service provid
39、ed to the ICN users via ICN. 3.2.4 ICN user: A person or organization which obtains ICN services from the ICN operator. 3.2.5 mission-critical service: A service whose failure or disruption will result in serious damage to the users of the service. 4 Abbreviations and acronyms This Recommendation us
40、es the following abbreviations and acronyms: HbbTV Hybrid Broadcast Broadband Television ICN Information Control Network NGN Next Generation Network QoS Quality of Service TV Television 5 Conventions In this Recommendation: The keywords “is required to“ indicate a requirement which must be strictly
41、followed and from which no deviation is permitted if conformance to this document is to be claimed. The keywords “is recommended“ indicate a requirement which is recommended but which is not absolutely required. Thus this requirement need not be present to claim conformance. The keywords “can option
42、ally“ and “may“ indicate an optional requirement which is permissible, without implying any sense of being recommended. These terms are 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. Ra
43、ther, it means the vendor may optionally provide the feature and still claim conformance with the specification. The terms “ICN application“ and “ICN service“ are used interchangeably. 6 Introduction 6.1 ICN overview The term “ICN“ as defined in clause 3 is used to name logical networks that are eme
44、rging in order to meet security, reliability, quality and other requirements of applications. Rec. ITU-T Y.2239 (02/2016) 3 NOTE 1 The services provided via ICN to users are termed as “ICN services“ and the users as “ICN users“. Typical ICN deployments use digital television infrastructure to delive
45、r data to the ICN users and a reverse asymmetrical ICN channel for the transmission of ICN service requests from ICN users (in cases where the reverse asymmetrical ICN channel has sufficient bandwidth, it may be also used for the exchange of other ICN service data from and to ICN users). The usage o
46、f the digital television infrastructure is effective in terms of large geographical area coverage. On the other hand, such universal coverage might still leave some sparsely populated areas with no convenient access bandwidth, limiting the possibilities of service offer in these areas. While broadba
47、nd access is generally used for the reverse asymmetrical ICN channel, in such areas the reverse asymmetrical ICN channel can still be implemented and services offered via ICN. ICN allows the organization of a trusted environment for the provisioning of mission-critical services, such as emergency ma
48、nagement, e-government, e-commerce and e-health, by introducing the ICN operator as a single point of service management. There are major differences in the models of provisioning of mission-critical services in comparison with those of other services, e.g., entertainment services provided by hybrid
49、 broadcast broadband television (HbbTV) b-ETSI TS 102 796: service provisioning for mission-critical services often results in some irrevocable actions in the physical world (e.g., initiation of goods transportation, health equipment activation, etc.), considerable financial transactions and/or legally significant actions (e.g., filling in of an income declaration). Therefore, the cost of error or poor quality of service is much higher for mission-critical services than other services; diversity of ser
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