1、 International Telecommunication Union ITU-T Y.2006TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (02/2008) SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS Next Generation Networks Frameworks and functional architecture models Description of capab
2、ility set 1 of NGN release 1 Recommendation ITU-T Y.2006 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.30
3、0Y.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 applications Y.1100Y.1199 Architecture, access, network
4、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.1800Y.1899 NEXT GENERATION NETWORKS Frameworks and func
5、tional 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 man
6、agement Y.2400Y.2499 Network control architectures and protocols Y.2500Y.2599 Security Y.2700Y.2799 Generalized mobility Y.2800Y.2899 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T Y.2006 (02/2008) i Recommendation ITU-T Y.2006 Description of capability set 1 of N
7、GN release 1 Summary Recommendation ITU-T Y.2006 provides brief descriptions of capability set 1 of NGN release 1 in terms of the overall requirements and a high-level overview of the functional features to be addressed. The descriptions are from the aspects of environment, capabilities, architectur
8、e, and technical specifications. Source Recommendation ITU-T Y.2006 was approved on 29 February 2008 by ITU-T Study Group 13 (2005-2008) under Recommendation ITU-T A.8 procedure. Keywords Architecture, capabilities, capability set 1, environment, NGN Release 1, technical specifications. ii Rec. ITU-
9、T Y.2006 (02/2008) FOREWORD The International Telecommunication Union (ITU) is 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 r
10、esponsible for studying technical, operating and tariff questions and issuing 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 t
11、he 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 of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collabo
12、rative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ 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
13、 mandatory provisions (to ensure e.g. interoperability or applicability) and 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
14、. The use of such words does not suggest that compliance with the Recommendation 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
15、takes no position concerning the evidence, validity or applicability of claimed 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 pr
16、operty, protected by patents, which may be required to implement this Recommendation. 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 2009 All rights reserv
17、ed. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T Y.2006 (02/2008) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Terms and definitions . 3 4 Abbreviations 3 5 Conventions 3 6 NGN release 1 environment . 3 6.1 Transport
18、 functions. 4 6.2 Network network interfaces (NNIs) . 5 6.3 User profile functions. 5 6.4 End-user functions 5 6.5 NGN release 1 service components 5 7 Capability set 1 of NGN release 1 6 7.1 Transport connectivity 7 7.2 Communication modes. 7 7.3 Codecs 7 7.4 Access network and network attachment .
19、 7 7.5 Interconnection, interoperability and interworking 8 7.6 Routing . 8 7.7 Quality of service . 8 7.8 Identification, authentication and authorization. 8 7.9 Security. 8 7.10 Mobility management. 8 7.11 OAM. 8 7.12 Management . 8 7.13 PSTN/ISDN emulation and simulation 9 7.14 Public interest as
20、pect 9 8 NGN release 1 architecture overview. 9 8.1 Overview of the NGN architecture. 9 9 Technical specifications 11 9.1 External interfaces of NGN 11 9.2 RACF-related interfaces. 12 Appendix I Table of documents related to capability set 1 of NGN release 1 . 14 Bibliography. 20 iv Rec. ITU-T Y.200
21、6 (02/2008) Introduction This Recommendation aligns with fundamental ITU-T Recommendations of NGN release 1, such as Supplement 1 to Y.2000 series of ITU-T Recommendations (NGN scope), Recommendation ITU-T Y.2201 (NGN release 1 requirements), Recommendation ITU-T Y.2012 (NGN functional requirements
22、and architecture) and technical specifications according to capability set 1 of NGN release 1. It concentrates on the holistic description of the network framework and protocols that have been standardized in ITU-T. Rec. ITU-T Y.2006 (02/2008) 1 Recommendation ITU-T Y.2006 Description of capability
23、set 1 of NGN release 1 1 Scope ITU-T has adopted a release-based approach for the production of NGN Recommendations, with the scope of each release clearly defined and target deadlines for completion specified. The objective is to aid project management, and to ensure concentration of effort on a sm
24、aller set of deliverables to be achieved in a shorter timescale, thus achieving feasible deliverables in a timely manner. Considering a priority of a market, the concept of capability set that breaks down the release concept is adopted because necessary functional groups exist prior to a target comp
25、letion date of the Release. Capability set includes requirements, architecture, and signalling aspects necessary to provide specific services. This means the Release concept determines the scope of standardization in ITU and capability set specifies the related Recommendations necessary for specific
26、 services. This Recommendation gives a description of capability set 1 of NGN release 1 of an anticipated series of releases within ITU-T, in terms of the overall requirements and a high-level overview of the functional features to be addressed. Additionally, this Recommendation only lists Recommend
27、ations relevant to capability set 1 of NGN release 1, so a substantial specification is included in each original Recommendation. To fulfil the general objectives and principles of an NGN identified in ITU-T Y.2001 and ITU-T Y.2011, this Recommendation focuses on key initial capabilities whilst ensu
28、ring that the general and long-term architectural direction of the NGN is maintained to be as flexible as possible to allow future enhancements and releases. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute pro
29、visions 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 to investigate the possibility of applying the most recent edition of the Recommendat
30、ions 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, the status of a Recommendation. ITU-T M.3060 Recommendation ITU-T M.3060/Y.2401 (200
31、6), Principles for the management of Next Generation Networks. ITU-T Q.1706 Recommendation ITU-T Q.1706/Y.2801 (2006), Mobility management requirements for NGN. ITU-T Q.1741.4 Recommendation ITU-T Q.1741.4 (2005), IMT-2000 references to release 6 of GSM evolved UMTS core network. ITU-T Q.3300 Recomm
32、endation ITU-T Q.3300 (2008), Architectural framework for the Q.33xx series of Recommendations. ITU-T Q.3301.1 Recommendation ITU-T Q.3301.1 (2007), Resource control protocol No. 1 Protocol at the Rs interface between service control entities and the policy decision physical entity. 2 Rec. ITU-T Y.2
33、006 (02/2008) ITU-T Q.3302.1 Recommendation ITU-T Q.3302.1 (2007), Resource control protocol No. 2 Protocol at the Rp interface between transport resource control physical entities. ITU-T Q.3303.0 Recommendation ITU-T Q.3303.0 (2007), Resource control protocol No. 3 Protocols at the Rw interface bet
34、ween a policy decision physical entity (PD-PE) and a policy enforcement physical entity (PE-PE): Overview. ITU-T Q.3303.1 Recommendation ITU-T Q.3303.1 (2007), Resource control protocol No. 3 Protocol at the interface between a policy decision physical entity (PD-PE) and a policy enforcement physica
35、l entity (PE-PE): COPS alternative. ITU-T Q.3303.2 Recommendation ITU-T Q.3303.2 (2007), Resource control protocol No. 3 Protocol at the interface between a policy decision physical entity (PD-PE) and a policy enforcement physical entity (PE-PE) (Rw interface): H.248 alternative. ITU-T Q.3303.3 Reco
36、mmendation ITU-T Q.3303.3 (2008), Resource control protocol No. 3 Protocols at the Rw interface between a policy decision physical entity (PD-PE) and a policy enforcement physical entity (PE-PE): Diameter. ITU-T Q.3304.1 Recommendation ITU-T Q.3304.1 (2007), Resource control protocol No. 4 (rcp4) Pr
37、otocols at the Rc interface between a transport resource control physical entity (TRC-PE) and a transport physical entity (T-PE): COPS alternative. ITU-T Q.3304.2 Recommendation ITU-T Q.3304.2 (2007), Resource control protocol No. 4 (rcp4) Protocols at the Rc interface between a transport resource c
38、ontrol physical entity (TRC-PE) and a transport physical entity (T-PE): SNMP alternative. ITU-T Q.3305.1 Recommendation ITU-T Q.3305.1 (2008), Resource control protocol No. 5 (rcp5) Protocol at the interface between a transport resource control physical entity (TRC-PE) and a policy decision physical
39、 entity (PD-PE) (Rt interface): Diameter-based. ITU-T Q.3401 Recommendation ITU-T Q.3401 (2007), NGN NNI signalling profile (protocol set 1). ITU-T Q.3402 Recommendation ITU-T Q.3402 (2008), NGN UNI signalling profile (protocol set 1). ITU-T Y.2001 Recommendation ITU-T Y.2001 (2004), General overvie
40、w of NGN. ITU-T Y.2011 Recommendation ITU-T Y.2011 (2004), General principles and general reference model for Next Generation Networks. ITU-T Y.2012 Recommendation ITU-T Y.2012 (2006), Functional requirements and architecture of the NGN release 1. ITU-T Y.2014 Recommendation ITU-T Y.2014 (2008), Net
41、work attachment control functions in Next Generation Networks. ITU-T Y.2021 Recommendation ITU-T Y.2021 (2006), IMS for Next Generation Networks. ITU-T Y.2031 Recommendation ITU-T Y.2031 (2006), PSTN/ISDN emulation architecture. ITU-T Y.2111 Recommendation ITU-T Y.2111 (2006), Resource and admission
42、 control functions in Next Generation Networks. ITU-T Y.2201 Recommendation ITU-T Y.2201 (2007), NGN Release 1 requirements. Rec. ITU-T Y.2006 (02/2008) 3 ITU-T Y.2262 Recommendation ITU-T Y.2262 (2006), PSTN/ISDN emulation and simulation. ITU-T Y.2271 Recommendation ITU-T Y.2271 (2006), Call server
43、-based PSTN/ISDN emulation. ITU-T Y.2701 Recommendation ITU-T Y.2701 (2007), Security requirements for NGN release 1. 3 Terms and definitions This Recommendation defines the following terms: 3.1 NGN release: A set of NGN specifications covering a defined capability set of services and capabilities f
44、or implementation in a timely manner. A given specification of a given NGN Release can be categorized using three stages: service aspects (Stage 1), functional network aspects (Stage 2) and network implementation aspects (Stage 3). Whilst in principle, all services and capabilities defined in a give
45、n capability set of the NGN Release are to be specified to the Stage 3 level to ensure that the release is fully implementable, exceptions can be accepted. 3.2 capability set: A set of NGN capabilities that allows provisioning of services selected from services and capabilities for a given NGN Relea
46、se to ensure functional consistency. 3.3 release completion: An NGN release is completed as soon as the related NGN Release Description Recommendation has been approved by the ITU-T and all documents referenced in that Recommendation have been approved by the responsible body. In other words, the de
47、adline is a target. 4 Abbreviations This Recommendation uses the following abbreviations: GW Gateway NACF Network Attachment Control Functions NGN Next Generation Network NNI Network Network Interface OAM Operation, Administration and Maintenance PE Physical Entity PSTN/ISDN Public Switched Telephon
48、e Network/ Integrated Services Digital Network QoS Quality of Service RACF Resource and Admission Control Functions SLA Service Level Agreement 5 Conventions None. 6 NGN release 1 environment The objectives for NGN release 1 are to provide an extensible platform for services, and an overall architec
49、ture designed to be extensible, allowing new services to be provided as required. The functions that are supported by NGN release 1 specifications are illustrated in Figure 1. The figure 4 Rec. ITU-T Y.2006 (02/2008) includes the interfaces between NGN and end-user functions, between NGN and other networks, and between NGN and applications. More detailed information of NGN R1 environment can be found in: NGN release 1 scope b-ITU-T Y-Sup.1. Figure 1 Transport and service conf
