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 Series Y TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Supplement 35 (05/2016) SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS, INTERNET OF THINGS AND SMART CITIES ITU-T
2、 Y.3033 Data aware networking Scenarios and use cases ITU-T Y-series Recommendations Supplement 35 ITU-T Y-SERIES RECOMMENDATIONS GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS, INTERNET OF THINGS AND SMART CITIES GLOBAL INFORMATION INFRASTRUCTURE General Y
3、.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 Y.1
4、000Y.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 maintenance
5、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: Interoperabil
6、ity 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.2900Y
7、.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, architectures
8、 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 For further details, please refer to the list of ITU-T Recommendations. Y series Supplement 35 (05/2016) i Supple
9、ment 35 to ITU-T Y-series Recommendations ITU-T Y.3033 Data aware networking Scenarios and use cases Summary Supplement 35 to ITU-T Y-series Recommendations applies to Recommendation ITU-T Y.3033. The Supplement present a set of service scenarios and use cases supported by data aware networking (DAN
10、) including: 1) content dissemination; 2) sensor networking; 3) vehicular networking; 4) automated driving; 5) networking in a disaster area; 6) advanced metering infrastructure in a smart grid; 7) proactive video caching; 8) in-network data processing; 9) multihoming; and 10) traffic engineering. I
11、t provides informative illustrations and descriptions of how DAN can be designed, deployed and operated to support DAN services. In addition, the benefits of data aware networks to the scenarios and use cases, as well as several migration paths from current networks to data aware networks, are elabo
12、rated. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T Y Suppl. 35 2016-05-06 13 11.1002/1000/12866 Keywords Data aware networking, scenarios and use cases. * To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed
13、by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Y series Supplement 35 (05/2016) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technolog
14、ies (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 telecommunications on a worldwide basis. The World Telecommun
15、ication 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 procedure laid down in WTSA Resolution 1. In some areas o
16、f information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this publication, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating
17、agency. Compliance with this publication is voluntary. However, the publication may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the publication is achieved when all of these mandatory provisions are met. The words “shall“ or some othe
18、r 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 publication is required of any party. INTELLECTUAL PROPERTY RIGHTSITU draws attention to the possibility that the practice or implementa
19、tion of this publication 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 members or others outside of the publication development process. As of the
20、 date of approval of this publication, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this publication. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult t
21、he 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 means whatsoever, without the prior written permission of ITU. Y series Supplement 35 (05/2016) iii Table of Contents Page 1 Scope . 1 2 References . 1 3.1 Term
22、s defined elsewhere 1 3.2 Terms defined in this Supplement 1 4 Abbreviations and acronyms 2 5 Conventions 2 6 Overview . 3 7 Service scenarios 3 7.1 Content dissemination 3 7.2 Sensor networking 6 7.3 Vehicular networking . 8 7.4 Automated driving 9 7.5 Networking in a disaster area . 12 7.6 Advance
23、d metering infrastructure in a smart grid 14 7.7 Proactive video caching 16 7.8 In-network data processing . 17 7.9 Multihoming with DAN . 20 7.10 Traffic engineering of DAN . 22 8 Migration 24 9 Environmental considerations 24 10 Security considerations . 24 Appendix I Efficient and resilient data
24、dissemination in a disaster area 25 Appendix II Design of advanced metering infrastructure in smart grid with DAN . 26 Appendix III Proactive video caching with DAN . 27 Bibliography. 29 Y series Supplement 35 (05/2016) 1 Supplement 35 to ITU-T Y-series Recommendations ITU-T Y.3033 Data aware networ
25、king Scenarios and use cases 1 Scope The scope of this Supplement to ITU-T Y.3033 includes the following items: informative illustrations and descriptions of service scenarios and use cases supported by data aware networking; elaboration of the benefits of data aware networks to the scenarios and us
26、e cases, as well as several migration paths from current networks to data aware networks. 2 References ITU-T Y.3001 Recommendation ITU-T Y.3001 (2011), Future networks: Objectives and design goals. ITU-T Y.3033 Recommendation ITU-T Y.3033 (2014), Framework of data aware networking for future network
27、s. 3 Definitions 3.1 Terms defined elsewhere This Supplement uses the following terms defined elsewhere: 3.1.1 data object ITU-T Y.3033: An individually identifiable unit of information created by individuals, institutions and technology to benefit audiences in contexts that they value. 3.1.2 future
28、 network (FN) ITU-T Y.3001: 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 of an existing one, or b) A heterogeneous collection of new component n
29、etworks or of new and existing component networks that is operated as a single network. 3.1.3 identifier b-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), network entity(ies)
30、 providing services/applications, or other entities (e.g., physical or logical objects). Identifiers can be used for registration or authorization. They can be either public to all networks, shared between a limited number of networks or private to a specific network (private IDs are normally not di
31、sclosed to third parties). 3.1.4 name b-ITU-T Y.2091: A name is the identifier of an entity (e.g., subscriber, network element) that may be resolved/translated into an address. 3.1.5 service b-ITU-T Z. Sup.1: A set of functions and facilities offered to a user by a provider. 3.2 Terms defined in thi
32、s Supplement This Supplement defines the following terms: 3.2.1 named data object (NDO): A data object that is identifiable by a name. NOTE In this Supplement, NDOs include both what is not executable as a software program, and what is executable as a software program. 3.2.2 NDO-data: An NDO that is
33、 not executable as a software program (e.g., videos, text files and measurement data). 2 Y series Supplement 35 (05/2016) 3.2.3 NDO-func: An NDO that is executable as a software program. NDO-func takes NDO-data as input and produces another set of NDO-data as output after processing. 4 Abbreviations
34、 and acronyms This Supplement uses the following abbreviations and acronyms: AMI Advanced Metering Infrastructure CAN Controller Area Network CDN Content Delivery Network DAN Data Aware Networking DPI Deep Packet Inspection DSRC Dedicated Short Range Communication FN Future Network HTTP Hypertext Tr
35、ansfer Protocol HTTPS Hypertext Transfer Protocol Secure ID Identifier IoT Internet of Things IP Internet Protocol IrDA Infrared Data Association ISP Internet Service Provider LTE Long Term Evolution NDN Named Data Networking NDO Named Data Object PC Personal Computer QoS Quality of Service SDN Soft
36、ware-Defined Networking SNS Social Networking Services TCP Transmission Control Protocol TLS Transport Layer Security VPN Virtual Private Network WAN Wide Area Network WAP Wireless Application Protocol WLAN Wireless Local Area Network 5 Conventions In this Supplement, there are no specific conventio
37、ns. Y series Supplement 35 (05/2016) 3 6 Overview ITU-T Y.3001 defined the data access design goals of future networks (FNs) as the ability to deal with enormous amount of data efficiently in a distributed environment and to enable users to access desired data safely, easily, quickly and accurately,
38、 regardless of data location. This design goal was proposed in the form of a network architecture named data aware networking (DAN) in ITU-T Y.3033. The aim of this Supplement is to introduce the scenarios and use cases of DAN, which provides a technical context that is expected to be useful for dis
39、cussions on architectural requirements of DAN in further documents to be developed, and also to clarify the roles and interactions of the various types of DAN entities for services delivered via DAN. The set of the scenarios and use cases is not intended to be exhaustive, but sufficient enough to pr
40、ovide an understanding of DAN operation. Currently, this Supplement includes a set of use case scenarios: 1) content dissemination; 2) sensor networking; 3) vehicular networking; 4) automated driving; 5) networking in a disaster area; 6) advanced metering infrastructure (AMI) in a smart grid; 7) pro
41、active video caching; 8) in-network data processing; 9) multihoming; and 10) traffic engineering. It may be updated as new use cases are identified as being helpful in understanding the operation of DAN or in deriving its architectural requirements. 7 Service scenarios 7.1 Content dissemination This
42、 service scenario describes DAN as a cooperative caching architecture for efficient content dissemination. This service provides users with fast and reliable access by distributing content to ubiquitous caching points located close to users. Moreover, due to the context awareness of DAN, each cachin
43、g point can easily adapt the content in terms of the given context from users, and serve it to them accordingly. DAN can be deployed either by content distributors, e.g., content delivery networks (CDNs), or by network operators, e.g., internet service providers (ISPs). While content distributors ai
44、m to make a profit by providing delivery services for content providers, network operators deploy DAN mainly to reduce transit traffic or improve quality of service (QoS) for users. For the distribution of content files, either the DAN operator actively pushes popular content to caching points to de
45、al with some events, e.g., flash crowd, or contents can be passively cached at points along the downloading path while being pulled from the requester. Routing mechanisms in DAN are responsible for directing users requests to appropriate caching points. The routing mechanisms also interact with the
46、distribution mechanisms in order to keep content at caching points up-to-date. Figure 7-1depicts a sample scenario for content dissemination service using DAN. 4 Y series Supplement 35 (05/2016) Figure 7-1 Content dissemination using DAN The operational procedures of the scenario are as follows: 1)
47、Alice requests a named data object (NDO) from its service provider. 2) While the requested NDO is downloaded from the service provider to Alice, it can be stored on the selected DAN elements along the downloading path, e.g., a center node of all access points close to the end user. 3) Bob, with a mo
48、bile device, requests an NDO from the service provider. At this time, the request hits the cached NDO on the DAN element. 4) Thus, the NDO is directly served from the DAN element, not from the service provider. Moreover, the DAN element may process the NDO, so that its format fits the capability of
49、Bobs mobile device. 5) The service provider detects a flash crowd and so actively pushes popular NDOs to a DAN element close to the flash crowd. 6) Requests from the flash crowd are directly served from the DAN element nearby. Figure 7-2 is a procedural diagram of functions for a DAN content dissemination service. Y series Supplement 35 (05/2016) 5 Figure 7-2 Use case of content dissemination with DAN 1) The content provider provides the service provider with con
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