1、 International Telecommunication Union ITU-T Y.2026TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (07/2012) SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS Next Generation Networks Frameworks and functional architecture models Functional requireme
2、nts and architecture of the next generation network for support of ubiquitous sensor network applications and services Recommendation ITU-T Y.2026 ITU-T Y-SERIES RECOMMENDATIONS GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS GLOBAL INFORMATION INFRASTRUCTUR
3、E 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 PROTOCOL ASPECTS
4、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, administration and m
5、aintenance Y.1700Y.1799 Charging Y.1800Y.1899 IPTV over NGN Y.1900Y.1999 NEXT GENERATION NETWORKS Frameworks and functional architecture models Y.2000Y.2099Quality of Service and performance Y.2100Y.2199 Service aspects: Service capabilities and service architecture Y.2200Y.2249 Service aspects: Int
6、eroperability of services and networks in NGN Y.2250Y.2299 Numbering, naming and addressing 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 o
7、pen environment Y.2900Y.2999 FUTURE NETWORKS Y.3000Y.3499 CLOUD COMPUTING Y.3500Y.3999 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T Y.2026 (07/2012) i Recommendation ITU-T Y.2026 Functional requirements and architecture of the next generation network for support
8、 of ubiquitous sensor network applications and services Summary Recommendation ITU-T Y.2026 includes functional requirements and architecture of the next generation network (NGN) for the support of ubiquitous sensor network (USN) applications and services. This Recommendation is based on the capabil
9、ities defined in Recommendation ITU-T Y.2221. History Edition Recommendation Approval Study Group 1.0 ITU-T Y.2026 2012-07-29 13 Keywords Frameworks, functional architecture, sensor(s), sensor network(s), USN. ii Rec. ITU-T Y.2026 (07/2012) FOREWORD The International Telecommunication Union (ITU) is
10、 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 questions and issuing
11、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 Recommendations on these topics.
12、 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, the expression “Ad
13、ministration“ 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
14、 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 with the Recommenda
15、tion is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU 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 clai
16、med 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 implement this Recomm
17、endation. 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 2013 All rights reserved. No part of this publication may be reproduced, by any means whatsoever,
18、without the prior written permission of ITU. Rec. ITU-T Y.2026 (07/2012) 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 3 6 Functional requirements and functi
19、ons of the NGN for USN applications and services . 3 6.1 NGN functional requirements 3 6.2 Functional architecture model 4 6.3 Functions to support USN applications and services . 5 7 Functional architecture of the NGN for USN applications and services 8 7.1 Transport processing functional entities
20、. 8 7.2 Transport control functional entities 8 7.3 Service control functional entities 9 7.4 Application support functions and service support functions 9 8 Security considerations . 9 Appendix I Analysis of service requirements and network capabilities defined in Recommendation ITU-T Y.2221 10 I.1
21、 Requirements for extensions to NGN capabilities . 10 I.2 Requirements supported by existing NGN capabilities 12 I.3 Mapping table of the requirements and the extended NGN functions . 13 I.4 Mapping table of the requirements and the existing NGN functions . 14 Appendix II USN middleware functions pr
22、ovided by NGN . 15 Bibliography. 17 Rec. ITU-T Y.2026 (07/2012) 1 Recommendation ITU-T Y.2026 Functional requirements and architecture of the next generation network for support of ubiquitous sensor network applications and services 1 Scope This Recommendation, which is based on ITU-T Y.2012, covers
23、 extended features of the next generation network (NGN) for the support of ubiquitous sensor network (USN) applications and services. This Recommendation describes functional requirements, a functional architecture and functional entities in order to support the NGN service requirements and capabili
24、ties defined in ITU-T Y.2221. This Recommendation covers: Functional requirements and functions to support the NGN capabilities defined in ITU-T Y.2221 A functional architecture and entities of the NGN to support USN applications and services 2 References The following ITU-T Recommendations and othe
25、r 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 encouraged
26、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 document,
27、 the status of a Recommendation. ITU-T Y.2012 Recommendation ITU-T Y.2012 (2010), Functional requirements and architecture of next generation networks. ITU-T Y.2221 Recommendation ITU-T Y.2221 (2010), Requirements for support of ubiquitous sensor network (USN) applications and services in the NGN en
28、vironment. ITU-T Y.2701 Recommendation ITU-T Y.2701 (2007), Security requirements for NGN release 1. 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following terms defined elsewhere: 3.1.1 sensor ITU-T Y.2221: An electronic device that senses a physical condition or chemical
29、compound and delivers an electronic signal proportional to the observed characteristic. 3.1.2 sensor network ITU-T Y.2221: A network comprised of interconnected sensor nodes exchanging sensed data by wired or wireless communication. 3.1.3 sensor node ITU-T Y.2221: A device consisting of sensor(s) an
30、d optional actuator(s) with capabilities of sensed data processing and networking. 2 Rec. ITU-T Y.2026 (07/2012) 3.1.4 ubiquitous sensor network (USN) ITU-T Y.2221: A conceptual network built over existing physical networks which makes use of sensed data and provides knowledge services to anyone, an
31、ywhere and at anytime, and where the information is generated by using context awareness. 3.1.5 USN end-user ITU-T Y.2221: An entity that uses the sensed data provided by USN applications and services. This end-user may be a system or a human. 3.1.6 USN gateway ITU-T Y.2221: A node which interconnec
32、ts sensor networks with other networks. 3.2 Terms defined in this Recommendation None. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: ABG-FE Access Border Gateway Functional Entity AN-FE Access Node Functional Entity ASF&SSF Application Support Functi
33、ons and Service Support Functions AS-FE Application Support Functional Entity CAF Charging and Accounting Functions EN-FE Edge Node Functional Entity IP Internet Protocol MLM-FE Mobile Location Management Functional Entity MMCF Mobility Management and Control Functions NACF Network Attachment Contro
34、l Functions NAC-FE Network Access Configuration Functional Entity NGN Next Generation Network OSE Open Service Environment QoS Quality of Service RACF Resource and Admission Control Functions SAA-FE Service Authentication and Authorization Functional Entity SC&CDF Service Control and Content Deliver
35、y Functions SCF Service Control Functions SCP-FE Service and Content Protection Functional Entity SUP-FE Service User Profile Functional Entity TAA-FE Transport Authentication and Authorization Functional Entity TLM-FE Transport Location Management Functional Entity TRC-FE Transport Resource Control
36、 Functional Entity TUP-FE Transport User Profile Functional Entity USN Ubiquitous Sensor Network Rec. ITU-T Y.2026 (07/2012) 3 5 Conventions None. 6 Functional requirements and functions of the NGN for USN applications and services 6.1 NGN functional requirements ITU-T Y.2221 describes the NGN servi
37、ce requirements and capabilities to support USN applications and services, and clause 8.1 of ITU-T Y.2221 specifically states the following requirements for extensions or additions to NGN capabilities to support USN applications and services: Network management Profile management Service profile NOT
38、E 1 Service profile requirement can be supported by existing NGN capabilities. See clause I.1. Device profile Open service environment (OSE) Service registration and discovery Inter-working with service creation environments NOTE 2 This Recommendation does not take these requirements into considerat
39、ion. See clause I.1. Quality of service (QoS) Application traffic control NOTE 3 Application traffic control can be supported by existing NGN capabilities. See clause I.1. Privacy NOTE 4 This Recommendation does not take this requirement into consideration. See clause I.1. In addition to these capab
40、ilities, clause 8.2 of ITU-T Y.2221 explains that the following capabilities are supported by the existing NGN capabilities to support USN applications and services: Open service environment Service composition and coordination NOTE 5 This Recommendation does not take this requirement into considera
41、tion. See clause I.1. Quality of service Differentiated QoS and data prioritization Connectivity Location management Mobility Security Identification, authentication and authorization Accounting and charging Appendix I describes requirements for the support of USN applications and services in NGN an
42、d allocates the corresponding functions of NGN to satisfy the requirements. 4 Rec. ITU-T Y.2026 (07/2012) 6.2 Functional architecture model Figure 1 depicts the overall diagram of USN architecture, which uses NGN as a backbone network. Figure 1 Overall USN architecture The sensor networks gather inf
43、ormation about their physical surroundings and deliver this information to USN service providers through NGN. The USN service providers create USN services using this information and provide them to USN end-users via NGN. The USN end-users utilize USN services through NGN. As a backbone network, NGN
44、 provides the capabilities for the support of USN applications and services in the transport stratum functions, the service stratum functions, the management functions and the end-user functions. Figure 2 shows the overall functional architecture model of the NGN to support USN applications and serv
45、ices. More specifically, the figure shows the functions required for the support of USN applications and services. Appendix I describes requirements for the support of USN applications and services in NGN and allocates the corresponding functions of NGN to satisfy the requirements. Rec. ITU-T Y.2026
46、 (07/2012) 5 Figure 2 Overall functional architecture model As seen in Figure 2, there are no additional functions beyond ITU-T Y.2012 to support requirements for USN applications and services. However, some NGN functions should be extended to support requirements in terms of functionalities. Clause
47、 6.3 describes NGN functions to support USN applications and services. 6.3 Functions to support USN applications and services This clause describes how the functional requirements identified in clause 6.1 are supported in the functional architecture model shown in clause 6.2. This clause focuses on
48、the NGN capabilities which need the extensions of NGN functions to support USN applications and services. The extension of NGN functions means that the NGN functions defined in ITU-T Y.2012 should support additional capabilities for the requirements of USN applications and services. The extension of
49、 NGN functions can be achieved by implementation of additional capabilities of each stratum function. 6.3.1 Transport stratum functions The transport stratum functions are required to be extended to support requirements of USN applications and services. The extensions of the transport stratum functions are given in the following clauses. 6 Rec. ITU-T Y.2026 (07/2012) 6.3.1.1 Transport functions The following functional requirements are supported by
