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.3101 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Corrigendum 1 (04/2018) SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS, NEXT-GENERATION NETWORKS, INTERNET OF THINGS AND SMART CITIES Future net
2、works Requirements of the IMT-2020 network Corrigendum 1 Recommendation ITU-T Y.3101 (2018) Corrigendum 1 ITU-T Y-SERIES RECOMMENDATIONS GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS, NEXT-GENERATION NETWORKS, INTERNET OF THINGS AND SMART CITIES GLOBAL INFORMATION INFRASTRUCTURE Gener
3、al 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 PROTOCOL ASPECTS General
4、 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, administration and maintena
5、nce 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 Service aspects: Interoper
6、ability 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 grade open environment Y.2
7、900Y.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.4399 Frameworks, architect
8、ures 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 of ITU-T Recommendations
9、. Rec. ITU-T Y.3101 (2018)/Cor.1 (04/2018) i Recommendation ITU-T Y.3101 Requirements of the IMT-2020 network Corrigendum 1 Summary Recommendation ITU-T Y.3101 describes requirements of the international mobile telecommunications 2020 (IMT-2020) network. Recommendation ITU-T Y.3101 first provides ge
10、neral principles of the IMT-2020 network, then specifies requirements for overall non-radio aspects of the IMT-2020 network from both the service and network operation points of view. Corrigendum 1 adds a clarification, and adapts the Recommendation accordingly. History Edition Recommendation Approv
11、al Study Group Unique ID* 1.0 ITU-T Y.3101 2018-01-13 13 11.1002/1000/13466 1.1 ITU-T Y.3101 (2018) Cor. 1 2018-04-25 13 11.1002/1000/13618 Keywords Capabilities, IMT-2020, international mobile telecommunications 2020, management, network slice, orchestration, requirements. * To access the Recommend
12、ation, 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.3101 (2018)/Cor.1 (04/2018) FOREWORD The International Telecommunication Union (ITU) is the United N
13、ations 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 questions and issuing Recommendatio
14、ns 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 Recommendations on these topics. The approval
15、 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, the expression “Administration“
16、 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 applicability) and compliance w
17、ith 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 with the Recommendation is requi
18、red 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 applicability of claimed Intellectu
19、al 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 implement this Recommendation. Howe
20、ver, 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 2018 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the pr
21、ior written permission of ITU. Rec. ITU-T Y.3101 (2018)/Cor.1 (04/2018) 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 . 3 4 Abbreviations and acronyms 3 5 Conventions 4 6 Introduction to the IMT-2020 net
22、work . 4 7 General principles of the IMT-2020 network . 5 7.1 Service diversity . 5 7.2 Common core network with minimized access network technology dependency . 6 7.3 Flexibility and programmability . 6 7.4 Distributed network architecture 6 7.5 In-network data processing . 7 7.6 Network management
23、 . 7 7.7 Dynamic and intelligent control of user data transport 7 7.8 Reliability and resiliency 7 7.9 Security and personal data protection . 7 7.10 Energy efficiency 7 8 Requirements from the service point of view . 8 8.1 Enhanced mobile broadband services 8 8.2 Massive machine type communication-
24、based services 8 8.3 Ultra-reliable and low latency communication-based services 9 9 Requirements from the network operation point of view . 9 9.1 Network flexibility and programmability . 9 9.2 Fixed mobile convergence 10 9.3 Enhanced mobility management 11 9.4 Network capability exposure 11 9.5 Id
25、entification and authentication 12 9.6 Security and personal data protection . 12 9.7 Efficient signalling . 13 9.8 Quality of service control . 13 9.9 Network management . 14 9.10 Charging . 15 9.11 Interworking with non-IMT-2020 networks 15 9.12 IMT-2020 network deployment and migration 16 Bibliog
26、raphy. 17 Rec. ITU-T Y.3101 (2018)/Cor.1 (04/2018) 1 Recommendation ITU-T Y.3101 Requirements of the IMT-2020 network Corrigendum 1 Editorial note: This is a complete-text publication. The modifications introduced by this corrigendum are shown in revision marks relative to Recommendation ITU-T Y.310
27、1 (2018). 1 Scope This Recommendation describes requirements of the international mobile telecommunications 2020 (IMT-2020) network. The Recommendation first provides general principles of the IMT-2020 network, then specifies requirements for overall non-radio aspects of the IMT-2020 network from bo
28、th the service and network operation points of view. 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 Recomm
29、endations 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 and other references listed below. A list of the currently valid ITU-T Recommendations is regularly
30、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.3110 Recommendation ITU-T Y.3110 (2017), IMT-2020 network management and orchestration requirements. ITU-T Y.3130 Recommendation ITU-T Y.3130 (2018),
31、 Requirements of IMT-2020 fixed mobile convergence. ITU-R M.2083-0 Recommendation ITU-R M.2083-0 (2015), IMT Vision Framework and overall objectives of the future development of IMT for 2020 and beyond. 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following terms defined el
32、sewhere: 3.1.1 backhaul b-ITU-T Y.3100: A network path between base station systems and a core network. 3.1.2 control plane b-ITU-T Y.2011: The set of functions that controls the operation of entities in the stratum or layer under consideration, plus the functions required to support this control. 3
33、.1.3 evolved IMT-advanced RAT b-ITU-T Y.3100: The enhanced version of IMT-advanced radio access technologies (RATs). NOTE IMT-advanced is the ITUs official terminology for so-called LTE-advanced. 3.1.4 fixed mobile convergence b-ITU-T Y.3100: In the context of IMT-2020, the capabilities that provide
34、 services and applications to end users regardless of the fixed or mobile access technologies being used and independently of the users location. 2 Rec. ITU-T Y.3101 (2018)/Cor.1 (04/2018) 3.1.5 fronthaul b-ITU-T Y.3100: A network path between centralized radio controllers and remote radio units of
35、a base station function. 3.21.16 IMT-2020 b-ITU-T Y.3100): Systems, system components, and related aspects that provide far more enhanced capabilities than those described in b-ITU-R M.1645. NOTE b-ITU-R M.1645 defines the framework and overall objectives of the future development of IMT-2000 and sy
36、stems beyond IMT-2000 for the radio access network. 3.1.67 logical resource b-ITU-T Y.3011: An independently manageable partition of a physical resource, which inherits the same characteristics as the physical resource and whose capability is bound to the capability of the physical resource. NOTE “i
37、ndependently“ means mutual exclusiveness among multiple partitions at the same level. 3.1.78 management b-ITU-T Y.3100: In the context of IMT-2020, the processes aiming at fulfilment, assurance, and billing of services, network functions, and resources in both physical and virtual infrastructure inc
38、luding compute, storage, and network resources. 3.1.89 network function b-ITU-T Y.3100: In the context of IMT-2020, a processing function in a network. NOTE 1 Network functions include but are not limited to network node functionalities, e.g., session management, mobility management and transport fu
39、nctions, whose functional behaviour and interfaces are defined. NOTE 2 Network functions can be implemented on a dedicated hardware or as virtualized software functions. NOTE 3 Network functions are not regarded as resources, but rather any network functions can be instantiated using the resources.
40、3.1.910 network functions virtualization (NFV) b-ETSI GS NFV 003: Principle of separating network functions from the hardware they run on by using virtual hardware abstraction. 3.1.110 network slice b-ITU-T Y.3100: A logical network that provides specific network capabilities and network characteris
41、tics. NOTE 1 Network slices enable the creation of customized networks to provide flexible solutions for different market scenarios which have diverse requirements, with respect to functionalities, performance and resource allocation. NOTE 2 A network slice may have the ability to expose its capabil
42、ities. NOTE 3 The behaviour of a network slice is realized via network slice instance(s). 3.1.121 network slice instance b-ITU-T Y.3100: An instance of network slice, which is created based on a network slice blueprint. NOTE 1 A network slice instance is composed of a set of managed run-time network
43、 functions, and physical/logical/virtual resources to run these network functions, forming a complete instantiated logical network to meet certain network characteristics required by the service instance(s). NOTE 2 A network slice instance may also be shared across multiple service instances provide
44、d by the network operator. A network slice instance may be composed of none, one or more sub-network slice instances which may be shared with another network slice instance. 3.1.132 network softwarization b-ITU-T Y.3100: An overall approach for designing, implementing, deploying, managing and mainta
45、ining network equipment and/or network components by software programming. NOTE Network softwarization exploits the nature of software such as flexibility and rapidity all along the lifecycle of network equipment and/or components, for the sake of creating conditions that enable the re-design of net
46、work and services architectures, the optimization of costs and processes, self-management and bring added values in network infrastructures. 3.1.143 network virtualization b-ITU-T Y.3011: A technology that enables the creation of logically isolated network partitions over shared physical networks so
47、 that heterogeneous collection Rec. ITU-T Y.3101 (2018)/Cor.1 (04/2018) 3 of multiple virtual networks can simultaneously coexist over the shared networks. This includes the aggregation of multiple resources in a provider and appearing as a single resource. 3.1.154 nomadism b-ITU-T Q.1761: Ability o
48、f the user to change his network access point after moving; when changing the network access point, the users service session is completely stopped and then started again, i.e., there is no handover possible. It is assumed that the normal usage pattern is that users shutdown their service session be
49、fore moving to another access point or changing terminal. This is the mobility alluded to in the case of fixed mobile convergence. 3.1.165 orchestration b-ITU-T Y.3100: In the context of IMT-2020, the processes aiming at the automated arrangement, coordination, instantiation and use of network functions and resources for both physical and virtual infrastructures by optimization criteria. 3.1.176 physical resource b-ITU-T Y.3100: A physical asset for comput
