1、 International Telecommunication Union ITU-T Y.3001TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (05/2011) SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS Next Generation Networks Future networks Future networks: Objectives and design goals Recom
2、mendation ITU-T Y.3001 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 Interfaces and protocols Y.
3、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 and resource manageme
4、nt 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 Frameworks and functional
5、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 Network management
6、 Y.2400Y.2499 Network control architectures and protocols Y.2500Y.2599 Smart ubiquitous networks Y.2600Y.2699 Security Y.2700Y.2799 Generalized mobility Y.2800Y.2899 Carrier grade open environment Y.2900Y.2999 Future networks Y.3000Y.3099For further details, please refer to the list of ITU-T Recomme
7、ndations. Rec. ITU-T Y.3001 (05/2011) i Recommendation ITU-T Y.3001 Future networks: Objectives and design goals Summary Recommendation ITU-T Y.3001 describes objectives and design goals for future networks (FNs). In order to differentiate FNs from existing networks, four objectives have been identi
8、fied: service awareness, data awareness, environmental awareness, and social and economic awareness. In order to realize these objectives, twelve design goals have been identified: service diversity, functional flexibility, virtualization of resources, data access, energy consumption, service univer
9、salization, economic incentives, network management, mobility, optimization, identification, reliability and security. This Recommendation assumes that the target timeframe for FNs falls approximately between 2015 and 2020. Appendix I describes technologies elaborated in recent research efforts that
10、 are likely to be used as an enabling technology for each design goal. History Edition Recommendation Approval Study Group 1.0 ITU-T Y.3001 2011-05-20 13 ii Rec. ITU-T Y.3001 (05/2011) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of t
11、elecommunications, 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 questions and issuing Recommendations on them with a view to standardizing tel
12、ecommunications 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 Recommendations on these topics. The approval of ITU-T Recommendations is covered by the
13、 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, the expression “Administration“ is used for conciseness to indicate both a
14、 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 applicability) and compliance with the Recommendation is achieved when all
15、 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 the Recommendation is required of any party. INTELLECTUAL PROPERTY RIG
16、HTSITU 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 applicability of claimed Intellectual Property Rights, whether asserted by ITU
17、 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 implement this Recommendation. However, implementers are cautioned that this m
18、ay 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 2012 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
19、.3001 (05/2011) 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 Introduction 3 7 Objectives . 3 7.1 Service awareness . 3 7.2 Data awareness . 4 7.3 Enviro
20、nmental awareness . 4 7.4 Social and economic awareness . 4 8 Design goals . 4 8.1 Service diversity . 5 8.2 Functional flexibility 5 8.3 Virtualization of resources . 6 8.4 Data access . 6 8.5 Energy consumption . 7 8.6 Service universalization 7 8.7 Economic incentives . 8 8.8 Network management .
21、 8 8.9 Mobility 9 8.10 Optimization . 9 8.11 Identification . 10 8.12 Reliability and security . 10 9 Target date and migration . 11 Appendix I Technologies for achieving the design goals . 12 I.1 Network virtualization (virtualization of resources) 12 I.2 Data/content-oriented networking (data acce
22、ss) 12 I.3 Energy-saving of networks (energy consumption) . 13 I.4 In-system network management (network management) . 13 I.5 Network optimization (optimization) . 14 I.6 Distributed mobile networking (mobility) 16 Bibliography. 17 Rec. ITU-T Y.3001 (05/2011) 1 Recommendation ITU-T Y.3001 Future net
23、works: Objectives and design goals 1 Scope This Recommendation describes objectives and design goals for future networks (FNs). The scope of this Recommendation covers: Fundamental issues to which insufficient attention was paid in designing current networks, and which are recommended to be the obje
24、ctives of future networks (FNs) High-level capabilities and characteristics that are recommended to be supported by future networks (FNs) Target timeframe for future networks (FNs). Ideas and research topics of future networks (FNs) that are important and may be relevant to future ITU-T standardizat
25、ion are included in Appendix I. 2 References The following ITU-T Recommendations and 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 r
26、eferences are subject to revision; users of this Recommendation are therefore encouraged 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 refere
27、nce to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T F.851 Recommendation ITU-T F.851 (1995), Universal Personal Telecommunication (UPT) Service description (service set 1). ITU-T Y.2001 Recommendation ITU-T Y.2001 (2004), Ge
28、neral overview of NGN. ITU-T Y.2019 Recommendation ITU-T Y.2019 (2010), Content delivery functional architecture in NGN. ITU-T Y.2091 Recommendation ITU-T Y.2091 (2008), Terms and definitions for Next Generation Networks. ITU-T Y.2205 Recommendation ITU-T Y.2205 (2011), Next Generation Networks Emer
29、gency telecommunications Technical considerations. ITU-T Y.2221 Recommendation ITU-T Y.2221 (2010), Requirements for support of ubiquitous sensor network (USN) applications and services in the NGN environment. ITU-T Y.2701 Recommendation ITU-T Y.2701 (2007), Security Requirements for NGN release 1.
30、3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following term defined elsewhere: 3.1.1 identifier ITU-T Y.2091: An identifier is a series of digits, characters and symbols or any other form of data used to identify subscriber(s), user(s), network element(s), function(s), netw
31、ork entity(ies) providing services/applications, or other entities (e.g., physical or logical objects). 2 Rec. ITU-T Y.3001 (05/2011) 3.2 Terms defined in this Recommendation This Recommendation defines the following terms. 3.2.1 component network: A single homogeneous network which, by itself, may
32、not provide a single end-to-end global telecommunication infrastructure. 3.2.2 future network (FN): A network able to provide services, capabilities, and facilities difficult to provide using existing network technologies. A future network is either: a) A new component network or an enhanced version
33、 of an existing one, or b) A heterogeneous collection of new component networks or of new and existing component networks that is operated as a single network. NOTE 1 The plural form “Future Networks“ (FNs) is used to show that there may be more than one network that fits the definition of a future
34、network. NOTE 2 A network of type b may also include networks of type a. NOTE 3 The label assigned to the final federation may, or may not, include the word “future“, depending on its nature relative to any preceding network and similarities thereto. NOTE 4 The word “difficult“ does not preclude som
35、e current technologies from being used in future networks. NOTE 5 In the context of this Recommendation, the word “new“ applied to a component network means that the component network is able to provide services, capabilities, and facilities that are difficult or impossible to provide using existing
36、 network technologies. 3.2.3 service universalization: A process to provide telecommunication services to every individual or group of people irrespective of social, geographical, and economical status. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: C
37、DN Content Distribution Network ET Emergency Telecommunications FN Future Network ICT Information and Communication Technology IC Integrated Circuit ID Identifier IP Internet Protocol OCDM Optical Code Division Multiplexing P2P Peer-to-Peer QoE Quality of Experience QoS Quality of Service SoA Servic
38、e-oriented Architecture 5 Conventions This Recommendation uses “is recommended“ to indicate the main points to be taken into account in the standardization of FNs. Detailed requirements and their degree (“required“, “recommended“, or “optional“) need further study. Rec. ITU-T Y.3001 (05/2011) 3 6 In
39、troduction While some requirements for networks do not change, a number of requirements are evolving and changing and new requirements arise, causing networks and their architecture to evolve. For future networks, traditional requirements, such as promoting fair competition ITU-T Y.2001, which refle
40、ct societys values, remain important. At the same time, new requirements are emerging. Numerous research projects have proposed requirements pertaining to future society b-NICT Vision and b-EC FI, and although there is still a lack of consensus, it is clear that sustainability and environmental issu
41、es will be vitally important considerations over the long term. New application areas such as Internet of Things, smart grids, and cloud computing are also emerging. Also, new implementation technologies, such as advanced silicon and optical technology, enable support of requirements that were conve
42、ntionally considered unrealistic, for example, by substantially reducing the production cost of an equipment. All these new factors introduce new requirements to networks. The basic architecture of large-scale public networks, such as telecommunication networks, is difficult to change due to the eno
43、rmous amount of resources needed to build, operate, and maintain them. Their architecture is therefore carefully designed to be flexible enough to satisfy continually changing requirements. For instance, Internet Protocol (IP) absorbs and hides the different protocols and implementations of underlyi
44、ng layers and, with its simple addressing and other features, it has succeeded in adapting to the enormous changes in scalability, as well as factors such as quality of service (QoS) and security. However, it is not known if current networks can continue to fulfil changing requirements in the future
45、. Nor is it known whether the growing market of new application areas will have the potential to finance the enormous investment required to change the networks, if the new architecture is to be sufficiently attentive to backward compatibility and migration costs. Research communities have been work
46、ing on various architectures and supporting technologies, such as network virtualization b-Anderson, b-ITU-T FG-FN NWvirt, energy-saving of networks b-ITU-T FG-FN Energy, and content-centric networks b-Jacobson. It is, therefore, reasonable to expect that some requirements can be realized by the new
47、 network architectures and supporting technologies described by recent research activities, and that these could be the foundation of networks of the future, whose trial services and phased deployment is estimated to fall approximately between 2015 and 2020. In this Recommendation, networks based on
48、 such new architecture are named “Future Networks“ (FNs). This Recommendation describes objectives that may differentiate FNs from existing networks, design goals that FNs should satisfy, target dates and migration issues, and technologies for achieving the design goals. 7 Objectives FNs are recomme
49、nded to fulfil the following objectives which reflect the new requirements that are emerging. These are objectives that are not considered as primary or are not realized to a satisfactory extent in current networks. These objectives are the candidate characteristics that clearly differentiate FNs. 7.1 Service awareness FNs are recommended to provide services whose functions are designed to be appropriate to the needs of applications and users. The number and range of services is expected to
