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.3322 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (09/2016) SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS, INTERNET OF THINGS AND SMART CITIES Future networks Funct
2、ional architecture for NICE implementation making use of software-defined networking technologies Recommendation ITU-T Y.3322 ITU-T Y-SERIES RECOMMENDATIONS GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS, INTERNET OF THINGS AND SMART CITIES GLOBAL INFORMATI
3、ON 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.700Y.799 Performances Y.800Y.899 INTERNET P
4、ROTOCOL 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.1599 Signalling Y.1600Y.1699 Operation, admi
5、nistration 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 and service architecture Y.2200Y.2249 Ser
6、vice 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 Generalized mobility Y.2800Y.2899 Carrier gra
7、de 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 Infrastructure, connectivity and networks Y.4250Y.439
8、9 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 further details, please refer to the list o
9、f ITU-T Recommendations. Rec. ITU-T Y.3322 (09/2016) i Recommendation ITU-T Y.3322 Functional architecture for NICE implementation making use of software-defined networking technologies Summary Recommendation ITU-T Y.3322 specifies the architecture and implementations of software-defined network int
10、elligence capability enhancement (S-NICE). S-NICE is a specific implementation of network intelligence capability enhancement (NICE) making use of software-defined networking (SDN) concepts and technologies. This Recommendation defines the functional architecture of S-NICE, describes the enhancement
11、 functions based on NICE, the reference points among different functions and some typical implementation flows. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T Y.3322 2016-09-29 13 11.1002/1000/13018 Keywords Network intelligence capability enhancement, NICE, SDN, software-d
12、efined networking. * 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/11.1002/1000/11830-en. ii Rec. ITU-T Y.3322 (09/2016) FOREWORD The International Telecommunicat
13、ion 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 tariff ques
14、tions 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 Recommendation
15、s 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 Recommendation,
16、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., interoperability or
17、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 that compliance w
18、ith 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, validity or appl
19、icability 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 required to impl
20、ement 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 reproduced, by any m
21、eans whatsoever, without the prior written permission of ITU. Rec. ITU-T Y.3322 (09/2016) 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 Overview for S
22、-NICE . 3 7 Functional architecture for S-NICE 3 7.1 Overall functional architecture of S-NICE . 3 7.1.1 Relationship between architectures of NICE and S-NICE . 3 7.1.2 Overall Functional architecture of S-NICE 4 7.2 Detailed functional architectures of S-NICE orchestration functions 6 7.2.1 Access
23、control FE . 7 7.2.2 Service management FE . 7 7.2.3 Service orchestration FE . 7 7.2.4 Application development support FE . 8 7.2.5 Service repository FE . 8 7.2.6 Network abstraction FE 8 7.2.7 Network monitoring FE 9 7.3 Detailed functional architectures of S-NICE controller functions . 9 7.3.1 P
24、olicy creation FE 10 7.3.2 Policy management FE . 10 7.3.3 Topology management FE . 10 7.3.4 Topology collection FE 10 7.3.5 Traffic scheduling and optimization FE . 10 7.3.6 Traffic monitoring FE . 11 7.3.7 Policy and rule translation FE 11 7.4 Detailed functional architectures of S-NICE infrastruc
25、ture functions . 11 7.4.1 Data forwarding FE 12 7.4.2 Network status reporting FE . 12 8 Reference points of S-NICE . 12 8.1 Internal Reference points of S-NICE orchestration functions 12 8.2 Internal Reference points of S-NICE controller functions . 13 8.3 Internal Reference points of S-NICE infras
26、tructure functions . 15 8.4 Internal Reference points among functions of S-NICE 15 8.5 External Reference points of S-NICE 16 9 Security considerations . 17 iv Rec. ITU-T Y.3322 (09/2016) Page Appendix A 18 A.1 Implementation flows of on-demand provision . 18 A.2 Implementation flows of resource gua
27、rantee based on network awareness . 19 A.3 Implementation flows of traffic scheduling based on network awareness . 19 Bibliography. 21 Rec. ITU-T Y.3322 (09/2016) 1 Recommendation ITU-T Y.3322 Functional architecture for NICE implementation making use of software-defined networking technologies 1 Sc
28、ope This Recommendation provides the functional architecture of software-defined network intelligence capability enhancement (S-NICE), S-NICE is a specific implementation of network intelligence capability enhancement (NICE) ITU-T Y.2301 making use of software-defined networking (SDN) technologies.
29、This Recommendation defines the functional architecture of NICE implementation making use of SDN technologies, describes the enhancement functions based on NICE, the reference points among different functions and some typical implementation flows. 2 References The following ITU-T Recommendations and
30、 other references contain 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 encour
31、aged to investigate 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 docu
32、ment, the status of a Recommendation. ITU-T Y.2301 Recommendation ITU-T Y.2301 (2013), Network intelligence capability enhancement Requirements and capabilities. ITU-T Y.2302 Recommendation ITU-T Y.2302 (2014), Network intelligence capability enhancement Functional architecture. ITU-T Y.3321 Recomme
33、ndation ITU-T Y.3321 (2015), Requirements and capability framework for NICE implementation making use of software-defined networking technologies. 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 s
34、et of capabilities which provide value-added functionality supported by one or more services. 3.1.2 content b-ITU-T H.780: A combination of audio, still image, graphic, video, or data. NOTE A variety of formats is classified as “data“ (e.g., text, encoded values, multimedia description language intr
35、oduced by b-ITU-T H.760). 3.1.3 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 what time the user i
36、s moving, interaction history between person and objects, etc. According to specific applications, context information can be updated. 3.1.4 identity b-ITU-T Y.2720: Information about an entity that is sufficient to identify that entity in a particular context. 2 Rec. ITU-T Y.3322 (09/2016) 3.1.5 ne
37、twork intelligence capability enhancement (NICE) ITU-T Y.2301: An enhanced NGN supporting some intelligent capabilities for the provisioning of services according to requirements of users and application providers. These intelligent capabilities (termed as “NICE capabilities“) enable operators to as
38、sign and dynamically adjust specific network resources based on the requirements, as well as support interfaces for users and applications enabling on demand resource and service provision. 3.1.6 service b-ITU-T Y.2091: A set of functions and facilities offered to a user by a provider. 3.1.7 softwar
39、e-defined networking (SDN) b-ITU-T Y.3300: A set of techniques that enables to directly program, orchestrate, control and manage network resources, which facilitates the design, delivery and operation of network services in a dynamic and scalable manner. 3.1.8 user b-ITU-T Y.2201: A user includes en
40、d user b-ITU-T Y.2091, person, subscriber, system, equipment, terminal (e.g., FAX, PC), (functional) entity, process, application, provider, or corporate network. 3.1.9 virtualized network ITU-T Y.3321: A network that makes use of virtualization technologies. It enables the abstraction of network re
41、sources such as creation of logically isolated virtual networks over a single physical network, and aggregation of multiple network resources as a single network resource. 3.2 Terms defined in this Recommendation None. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations
42、 and acronyms: API Application Programming Interface CPE Customer Premises Equipment FE Functional Entity NGN Next Generation Network NICE Network Intelligence Capability Enhancement QoS Quality of Service SDN Software-defined Networking S-NICE Software-defined NICE 5 Conventions The keywords is req
43、uired to indicate a requirement which must be strictly 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 p
44、resent 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 the option and the feature can be optionally enabled by the
45、 network operator/service provider. Rather, it means the vendor may optionally provide the feature and still claim conformance with the specification. In the body of this Recommendation and its annexes, the words shall, shall not, should, and may sometimes appear, in which case they are to be interp
46、reted, respectively, as is required to, is prohibited Rec. ITU-T Y.3322 (09/2016) 3 from, is recommended, and can optionally. The appearance of such phrases or keywords in an appendix or in material explicitly marked as informative are to be interpreted as having no normative intent. 6 Overview for
47、S-NICE S-NICE is a specific implementation of NICE making use of software-defined networking (SDN) technologies. In S-NICE, the functional entities such as service control functional entity (FE), content and context analysis FE, policy control FE, traffic scheduling FE need to be redesigned and impl
48、emented based on the SDN technologies. S-NICE supports the major functions of SDN technologies including the decoupling of control and data planes, the logical centralization of network intelligence and status and the abstraction of the underlying network infrastructure for the applications. By adop
49、ting SDN technologies, highly scalable and flexible control as well as programmable and automatic interaction between network and applications can be supported in S-NICE. In S-NICE, the control plane functions are centralized in the S-NICE controller, which maintains a global view of the data plane including network status and traffic information. As a result, the data plane appears to the S-NICE controller as an abstracted logical network/resource. Meanwhile, the functional ent
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