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.2304 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (03/2017) SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS, NEXT-GENERATION NETWORKS, INTERNET OF THINGS AND SMART CITIES Next Generation Networks
2、 Enhancements to NGN Network intelligence capability enhancement Requirements and capabilities to support mobile content delivery optimization Recommendation ITU-T Y.2304 ITU-T Y-SERIES RECOMMENDATIONS GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS, NEXT-GENERATION NETWORKS, INTERNET O
3、F THINGS AND SMART CITIES GLOBAL INFORMATION INFRASTRUCTURE General Y.100Y.199 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.7
4、00Y.799 Performances Y.800Y.899 INTERNET PROTOCOL ASPECTS General Y.1000Y.1099 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.15
5、99 Signalling Y.1600Y.1699 Operation, administration and maintenance Y.1700Y.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
6、 and service architecture Y.2200Y.2249 Service aspects: Interoperability of 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 Gen
7、eralized mobility Y.2800Y.2899 Carrier grade open environment Y.2900Y.2999 FUTURE 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 Infrastruct
8、ure, connectivity and networks Y.4250Y.4399 Frameworks, architectures and protocols 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 Evaluation and assessment Y.4900Y.4999 For f
9、urther details, please refer to the list of ITU-T Recommendations. Rec. ITU-T Y.2304 (03/2017) i Recommendation ITU-T Y.2304 Network intelligence capability enhancement Requirements and capabilities to support mobile content delivery optimization Summary Recommendation ITU-T Y.2304 identifies the te
10、chnical requirements and the enhanced network intelligence capability enhancement (NICE) capabilities to support mobile content delivery optimization. In order to support mobile content delivery optimization, the NICE capabilities need to be specifically enhanced as follows: the access and core tran
11、sport capabilities are required to be enhanced to support cache in access and core network, the policy control and enforcement capabilities are required to be enhanced to support caching policy and content transcoding, the content and context detection and analysis capabilities are required to be en
12、hanced to support network status collection and mobility information updates, and the open environment capabilities are required to be enhanced to support third-party mobile content delivery applications. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T Y.2304 2017-03-29 13 1
13、1.1002/1000/13249 Keywords Network intelligence capability enhancement, NICE, mobile content delivery optimization, MCDO. * 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.
14、itu.int/11.1002/1000/ 11830-en. ii Rec. ITU-T Y.2304 (03/2017) 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 (IT
15、U-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 Assembly (WTSA), which meets every four
16、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 fall within ITU-Ts purview, the n
17、ecessary standards are prepared on a collaborative 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. How
18、ever, the Recommendation may contain certain 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 negativ
19、e equivalents are used to express requirements. The use of such words does not suggest that 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 o
20、f a claimed Intellectual Property Right. ITU 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, I
21、TU had not received notice of intellectual property, 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.i
22、tu.int/ITU-T/ipr/. ITU 2017 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T Y.2304 (03/2017) iii Table of Contents Page 1 Scope . 1 2 References . 1 3 Definitions 1 3.1 Terms defined elsewhere 1 3.2
23、Terms defined in this Recommendation . 2 4 Abbreviations and acronyms 2 5 Conventions 3 6 Introduction . 3 7 Requirements of NICE to support mobile content delivery optimization 3 7.1 Enhancement of NICE features for mobile content delivery optimization 3 7.2 Requirements of NICE-MCDO 4 8 Capabiliti
24、es of NICE to support mobile content delivery optimization . 5 8.1 Overview of the enhanced capabilities of NICE 5 8.2 Relationship between requirements and capabilities 6 8.3 Enhanced capabilities of transport layer . 7 8.4 Enhanced capabilities of service layer . 9 Appendix I Use cases 10 I.1 Use
25、case of content distribution and caching feature . 10 I.2 Use case of RAN-aware content delivery optimization . 10 I.3 Use case of content delivery handover . 11 I.4 Use case of location based applications . 11 I.5 Use case of resource authentication and authorization . 12 Bibliography. 14 Rec. ITU-
26、T Y.2304 (03/2017) 1 Recommendation ITU-T Y.2304 Network intelligence capability enhancement Requirements and capabilities to support mobile content delivery optimization 1 Scope This Recommendation identifies the technical requirements and the enhanced NICE capabilities to support mobile content de
27、livery optimization (MCDO). In this Recommendation, the enhanced version of NICE is termed as network intelligence capability enhancement mobile content delivery optimization (NICE-MCDO). This Recommendation provides an overview of why NICE features and capabilities need to be enhanced to support mo
28、bile content delivery, it also specifies the technical requirements of NICE-MCDO features and capabilities, and illustrates five use cases for NICE-MCDO. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisi
29、ons 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 the possibility of applying the most recent edition of the Recommendations
30、 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 a Recommendation. ITU-T Y.2019 Recommendation ITU-T Y.2019 (2010), Content
31、 delivery functional architecture in NGN. ITU-T Y.2301 Recommendation ITU-T Y.2301 (2013), Network intelligence capability enhancement Requirements and capabilities. 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following terms defined elsewhere: 3.1.1 application b-ITU-T Y.
32、101: A structured set of capabilities which provide value-added functionality, supported by one or more services. 3.1.2 application provider b-ITU-T Y.2012: A general reference to a provider that offers applications to the customers making use of the services capabilities provided by the NGN. 3.1.3
33、charging b-ITU-T Q.825: The set of functions needed to determine the price assigned to the service utilization. 3.1.4 content b-ITU-T H.780: A combination of audio, still image, graphic, video, or data. NOTE A variety of formats are classified as data (e.g., text, encoded values, multimedia descript
34、ion language introduced by b-ITU-T H.760). 3.1.5 context b-ITU-T Y.2002: The information that can be used to characterize the environment of a user. NOTE Context information may include where the user is, what resources (devices, access points, noise level, bandwidth, etc.) are near the user, at wha
35、t time the user is moving, interaction history between person and objects, etc. According to specific applications, context information can be updated. 2 Rec. ITU-T Y.2304 (03/2017) 3.1.6 context awareness b-ITU-T Y.2201: Context awareness is a capability to determine or influence a next action in t
36、elecommunication or process by referring to the status of relevant entities, which form a coherent environment as a context. 3.1.7 service b-ITU-T Y.2091: A set of functions and facilities offered to a user by a provider. 3.1.8 service provider b-ITU-T M.1400: A general reference to an operator that
37、 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 may not be a customer of another service provider. 3.1.9 user b-ITU-T Y.2201: A user includes end user b-ITU-T Y.2091
38、, person, subscriber, system, equipment, terminal (e.g., FAX, PC), (functional) entity, process, application, provider, or corporate network. 3.1.10 network intelligence capability enhancement (NICE) ITU-T Y.2301: An enhancement for NGNs supporting some intelligence capabilities for the provisioning
39、 of services according to requirements of users and application providers. These intelligence capabilities (termed as NICE capabilities) enable operators to assign and dynamically adjust specific network resources based on the requirements, as well as supporting interfaces for users and applications
40、 enabling on-demand resource and service provision. 3.2 Terms defined in this Recommendation This Recommendation defines the following terms: 3.2.1 content delivery optimization: Mechanisms to decrease the delay between end user and application server and relieve the bandwidth tension to accelerate
41、content delivery, which include at least content caching and content service. 3.2.2 mobile content delivery optimization: Mechanisms to decrease the delay between end user and application server and relieve the bandwidth tension to accelerate mobile content delivery, which includes at least content
42、caching at both radio access network and core network, content service, and, if necessary, content optimization. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: API Application Programming Interface CN Core Network HTTP Hyper Text Transfer Protocol MCD
43、O Mobile Content Delivery Optimization MIME Multipurpose Internet Mail Extensions NGN Next Generation Network NICE Network Intelligence Capability Enhancement QoE Quality of Experience QoS Quality of Service RAN Radio Access Network URI Uniform Resource Identifier Rec. ITU-T Y.2304 (03/2017) 3 5 Con
44、ventions In this Recommendation: The keywords is required to indicate a requirement which must be strictly followed and from which no deviation is permitted if conformance to this Recommendation is to be claimed. The keywords is recommended indicate a requirement which is recommended but which is no
45、t absolutely required. Thus this requirement need not be present to claim conformance. The keywords can optionally indicate an optional requirement which is permissible, without implying any sense of being recommended. This term is not intended to imply that the vendors implementation must provide t
46、he option and the feature can be optionally enabled by the network operator/service provider. Rather, it means the vendor may optionally provide the feature and still claim conformance with this Recommendation. 6 Introduction Network intelligence capability enhancement (NICE) ITU-T Y.2301 is an enha
47、ncement for next generation networks (NGNs) supporting some intelligence capabilities for the provisioning of services according to requirements of users and application providers. These intelligence capabilities enable operators to assign and dynamically adjust specific network resources based on t
48、he requirements, as well as supporting interfaces for users and applications enabling on-demand resource and service provision. NICE offers intelligence to network, such intelligence improves user experience. Delay and bandwidth are two important factors that affect user experience. In order to decr
49、ease the delay and relieve the bandwidth tension, NICE provides the optional capabilities to support cache and media stream delivery functions in transport nodes ITU-T Y.2301. Such kind of capabilities optimize the content delivery by traffic localization. In this Recommendation, the term content delivery optimization for mechanisms refers to the decrease delay between end user and application server and the relieve bandwidth tension to accelerate content deliv
