1、 International Telecommunication Union ITU-T Y.2025TELECOMMUNICATION 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 architect
2、ure of the next generation network service integration and delivery environment Recommendation ITU-T Y.2025 ITU-T Y-SERIES RECOMMENDATIONS GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS GLOBAL INFORMATION INFRASTRUCTURE General Y.100Y.199 Services, applicat
3、ions 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.1000Y.1099 Services and appli
4、cations 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 Y.1700Y.1799 Charging Y.1800
5、Y.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: Interoperability of services and networks
6、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 open environment Y.2900Y.2999 FUTURE NET
7、WORKS Y.3000Y.3499 CLOUD COMPUTING Y.3500Y.3999 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T Y.2025 (07/2012) i Recommendation ITU-T Y.2025 Functional architecture of the next generation network service integration and delivery environment Summary Recommendation
8、 ITU-T Y.2025 defines the functional architecture of next generation network service integration and delivery environment (NGN-SIDE), which includes the definition of functional entities, reference points, service procedures and interconnection between different NGN-SIDEs. This Recommendation builds
9、 on the NGN-SIDE framework, general requirements, capabilities, and requirements related to service interfaces described in Recommendation ITU-T Y.2240. History Edition Recommendation Approval Study Group 1.0 ITU-T Y.2025 2012-07-29 13 Keywords Functional architecture, functional entities, NGN, NGN-
10、SIDE, reference points, resource adaptation, service creation, service delivery management, service execution, service integration. ii Rec. ITU-T Y.2025 (07/2012) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, inf
11、ormation 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 telecommunications on a w
12、orldwide 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 procedure laid down i
13、n 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 telecommunication adm
14、inistration 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 of these mandatory pr
15、ovisions 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 RIGHTS ITU draws attentio
16、n 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 members or others ou
17、tside 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 may not represent the
18、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, without the prior written permission of ITU. Rec. ITU-T Y.2025 (07/2012) iii T
19、able 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 Overview of NGN-SIDE 4 6.1 NGN-SIDE general characteristics . 4 6.2 Position of NGN-SIDE in NGN architecture . 4
20、 6.3 Introduction to NGN-SIDE functional architecture . 5 7 Functional architecture of NGN-SIDE . 7 7.1 NGN-SIDE service creation functional group related functional entities 9 7.2 NGN-SIDE service execution functional group-related functional entities . 12 7.3 NGN-SIDE service delivery management f
21、unctional group related functional entities . 19 7.4 NGN-SIDE adaptation functional group related functional entities 24 8 NGN-SIDE reference points . 26 8.1 NGN-SIDE internal reference points . 26 8.2 NGN-SIDE external reference points . 29 9 NGN-SIDE service procedures. 30 9.1 Resource registratio
22、n procedure . 30 9.2 Application development procedure . 31 9.3 Application provisioning procedure . 32 9.4 Resource triggering procedure . 34 9.5 Context information-based service procedure 36 9.6 Charging procedure 37 9.7 Application triggering procedure . 39 9.8 Procedure related to accessing res
23、ource in another NGN-SIDE 40 10 Security considerations . 42 Annex A Interconnection between different NGN-SIDEs . 43 Appendix I APIs for the NGN-SIDE functional architecture . 45 Appendix II Mapping between NGN-SIDE functional entities and NGN functional entities . 46 Bibliography. 48 Rec. ITU-T Y.
24、2025 (07/2012) 1 Recommendation ITU-T Y.2025 Functional architecture of the next generation network service integration and delivery environment 1 Scope This Recommendation defines the functional architecture of NGN service integration and delivery environment (NGN-SIDE), which includes the definiti
25、on of functional entities, reference points, service procedures and interconnection between different NGN-SIDEs. The Recommendation builds on the NGN-SIDE framework, general requirements, capabilities, and requirements related to service interfaces described in ITU-T Y.2240. 2 References The followi
26、ng 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 references are subject to revision; users of this Recomme
27、ndation 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 reference to a document within this Recommendation does not gi
28、ve it, as a stand-alone document, 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) applic
29、ations and services in the NGN environment. ITU-T Y.2233 Recommendation ITU-T Y.2233 (2010), Requirements and framework allowing accounting and charging capabilities in NGN. ITU-T Y.2240 Recommendation ITU-T Y.2240 (2011), Requirements and capabilities for next generation network service integration
30、 and delivery environment. 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following terms defined elsewhere: 3.1.1 application b-ITU-T Y.2261: A structured set of capabilities, which provide value-added functionality supported by one or more services, which may be supported b
31、y an API interface. 3.1.2 application network interface ITU-T Y.2012: Interface which provides a channel for interactions and exchanges between applications and NGN elements. The ANI offers capabilities and resources needed for the realization of applications. 3.1.3 application programming interface
32、 b-ITU-T I.312: An API provides a set of interfaces from an application environment to an execution environment. The execution environment provides services to the application environment. 2 Rec. ITU-T Y.2025 (07/2012) 3.1.4 functional architecture ITU-T Y.2012: A set of functional entities and the
33、reference points between them used to describe the structure of an NGN. These functional entities are separated by reference points, and thus, they define the distribution of functions. 3.1.5 functional entity ITU-T Y.2012: An entity that comprises an indivisible set of specific functions. Functiona
34、l entities are logical concepts, while groupings of functional entities are used to describe practical, physical implementations. 3.1.6 next generation network (NGN) b-ITU-T Y.2001: A packet-based network able to provide telecommunication services and able to make use of multiple broadband, QoS-enab
35、led transport technologies and in which service-related functions are independent from underlying transport-related technologies. It enables unfettered access for users to networks and to competing service providers and/or services of their choice. It supports generalized mobility which will allow c
36、onsistent and ubiquitous provision of services to users. 3.1.7 NGN service integration and delivery environment (NGN-SIDE) ITU-T Y.2240: An open environment in NGN integrating resources from different domains and delivering integrated services to applications over NGN. NOTE These domains include, bu
37、t are not limited to, telecommunication domain (e.g., fixed and mobile networks), Internet domain, broadcasting domain and content provider domain. 3.1.8 NGN service stratum b-ITU-T Y.2011: That part of the NGN which provides the user functions that transfer service-related data and the functions th
38、at control and manage service resources and network services to enable user services and applications. 3.1.9 NGN transport stratum b-ITU-T Y.2011: That part of the NGN which provides the user functions that transfer data and the functions that control and manage transport resources to carry such dat
39、a between terminating entities. 3.1.10 reference point ITU-T Y.2012: A conceptual point at the conjunction of two non-overlapping functional entities that can be used to identify the type of information passing between these functional entities. NOTE A reference point may correspond to one or more p
40、hysical interfaces between pieces of equipment. 3.2 Terms defined in this Recommendation None. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: ANI Application Network Interface API Application Programming Interface BPEL Business Process Execution Langu
41、age CDR Call Detail Record CP Content Provider CPU Central Processing Unit CSN Converged Service Network FE Functional Entity FTP File Transfer Protocol Rec. ITU-T Y.2025 (07/2012) 3 GUI Graphics User Interface HTTP Hyper Text Transfer Protocol IdM Identity Management ISDN Integrated Services Digita
42、l Network NGN Next Generation Network NGN-SIDE NGN Service Integration and Delivery Environment NNI Network-Network Interface OSE Open Service Environment PLMN Public Land Mobile Network POJO Plain Old Java Objects PSTN Public Switched Telephone Network QoS Quality of Service REST Representational S
43、tate Transfer SLA Service Level Agreement SMS Short Message Service SNI Service Network Interface SOAP Simple Object Access Protocol SP Service Provider UNI User Network Interface USN Ubiquitous Sensor Network 5 Conventions In this Recommendation: Functions: In the context of NGN-SIDE architecture,
44、“functions“ are defined as a collection of functionalities. It is represented by the following symbol: Functional entity: In the context of NGN-SIDE architecture, a “functional entity“ is defined as set of one or more functions. It is represented by the following symbol: Functions Functional entity
45、4 Rec. ITU-T Y.2025 (07/2012) Functional group: In the context of NGN-SIDE architecture, a “functional group“ is defined as a group of related functional entities. It is represented by the symbol as “functions“ shown above. Data source: In the context of NGN-SIDE architecture, “data source“ is defin
46、ed as particular source of local storage of data (e.g., repository specific to some functional entity). It is represented by the following symbol: 6 Overview of NGN-SIDE 6.1 NGN-SIDE general characteristics NGN-SIDE ITU-T Y.2240 provides an environment for service creation, service execution, and se
47、rvice delivery management in order to support the integration of capabilities from different domains over NGN. NGN-SIDE also provides resource brokering and resource adaptors capabilities. The general characteristics of NGN-SIDE are described as follows: 1) NGN-SIDE provides exposure of resources (i
48、ncluding service enabler, content, applications and virtualized resources) from different domains (NGN, fixed networks (e.g., PSTN/ISDN), mobile networks (e.g., PLMN), Internet, content providers, broadcast networks (e.g., cable networks, etc.) to applications in a secure and controlled way. 2) NGN-
49、SIDE provides a service creation environment including capabilities for application development, resource repository, and testing environment. 3) NGN-SIDE provides a configurable, scalable, reliable and virtualized service execution environment including capabilities for resource registration, access control, static and dynamic service orchestration capability, resource manager, and service dispatching. 4) NGN-SIDE provides a manageable and configurable service delivery managem
