1、 International Telecommunication Union ITU-T Q.3050TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (08/2012) SERIES Q: SWITCHING AND SIGNALLING Signalling requirements and protocols for the NGN Network signalling and control functional architecture Description of signalling protocols supporting next
2、 generation network capability sets Recommendation ITU-T Q.3050 ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE Q.1Q.3 INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING Q.4Q.59 FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN Q.60Q.99 C
3、LAUSES APPLICABLE TO ITU-T STANDARD SYSTEMS Q.100Q.119 SPECIFICATIONS OF SIGNALLING SYSTEMS No. 4, 5, 6, R1 AND R2 Q.120Q.499 DIGITAL EXCHANGES Q.500Q.599 INTERWORKING OF SIGNALLING SYSTEMS Q.600Q.699 SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 Q.700Q.799 Q3 INTERFACE Q.800Q.849 DIGITAL SUBSCRIBER SIG
4、NALLING SYSTEM No. 1 Q.850Q.999 PUBLIC LAND MOBILE NETWORK Q.1000Q.1099 INTERWORKING WITH SATELLITE MOBILE SYSTEMS Q.1100Q.1199 INTELLIGENT NETWORK Q.1200Q.1699 SIGNALLING REQUIREMENTS AND PROTOCOLS FOR IMT-2000 Q.1700Q.1799 SPECIFICATIONS OF SIGNALLING RELATED TO BEARER INDEPENDENT CALL CONTROL (BI
5、CC) Q.1900Q.1999 BROADBAND ISDN Q.2000Q.2999 SIGNALLING REQUIREMENTS AND PROTOCOLS FOR THE NGN Q.3000Q.3999 General Q.3000Q.3029 Network signalling and control functional architecture Q.3030Q.3099Network data organization within the NGN Q.3100Q.3129 Bearer control signalling Q.3130Q.3179 Signalling
6、and control requirements and protocols to support attachment in NGN environments Q.3200Q.3249 Resource control protocols Q.3300Q.3369 Service and session control protocols Q.3400Q.3499 Service and session control protocols supplementary services Q.3600Q.3649 NGN applications Q.3700Q.3849 Testing for
7、 next generation networks Q.3900Q.3999 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T Q.3050 (08/2012) i Recommendation ITU-T Q.3050 Description of signalling protocols supporting next generation network capability sets Summary Recommendation ITU-T Q.3050 provides
8、 brief descriptions of signalling protocols supporting next generation network (NGN) capability sets in terms of the overall protocol Recommendations defined in ITU-T. The descriptions are from the aspects of NGN capability set, NGN functional architecture, NGN signalling architecture and protocol R
9、ecommendations that have been standardized in ITU-T. History Edition Recommendation Approval Study Group 1.0 ITU-T Q.3050 2012-08-13 11 Keywords Architecture, NGN, Protocol set. ii Rec. ITU-T Q.3050 (08/2012) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized
10、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 Recommendations on them with a v
11、iew 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 of ITU-T Recommend
12、ations 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“ is used for concis
13、eness 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 with the Recommendat
14、ion 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 required of any party. I
15、NTELLECTUAL 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 claimed Intellectual Property Rights
16、, 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. However, implementers
17、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 2012 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permis
18、sion of ITU. Rec. ITU-T Q.3050 (08/2012) iii Table of Contents Page 1 Scope 1 2 References. 1 3 Definitions 2 4 Abbreviations and acronyms 2 5 Conventions 3 6 NGN capability sets 3 6.1 NGN capability set 1 3 6.2 NGN capability set 2 4 7 NGN functional architecture. 4 7.1 Overview of NGN architecture
19、 4 7.2 Generalized NGN functional architecture 5 8 NGN signalling architecture . 6 8.1 Mapping functions and functional blocks into physical entities 7 8.2 Mapping reference points to interfaces 8 9 Signalling protocols supporting NGN capability sets 8 9.1 External interfaces of NGN 8 9.2 Internal i
20、nterfaces of NGN . 9 Rec. ITU-T Q.3050 (08/2012) 1 Recommendation ITU-T Q.3050 Description of signalling protocols supporting next generation network capability sets 1 Scope This Recommendation provides brief descriptions of signalling protocols supporting next generation network (NGN) capability se
21、ts in terms of the overall protocol Recommendations defined in ITU-T. The descriptions are from the aspects of NGN capability sets, NGN functional architecture, NGN signalling architecture and protocol Recommendations that have been standardized in ITU-T. 2 References The following ITU-T Recommendat
22、ions 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 Recommendation are therefor
23、e 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 give it, as a stand-al
24、one document, the status of a Recommendation. ITU-T Q.1741.6 Recommendation ITU-T Q.1741.6 (2009), IMT-2000 references to Release 8 of GSM-evolved UMTS core network. ITU-T Q.3221 Recommendation ITU-T Q.3221 (2008), Requirements and protocol at the interface between the service control entity and the
25、 transport location management physical entity (S-TC1 interface). ITU-T Q.3301.1 Recommendation ITU-T Q.3301.1 (2010), Resource control protocol No. 1, version 2 Protocol at the Rs interface between service control entities and the policy decision physical entity. ITU-T Q.3302.1 Recommendation ITU-T
26、 Q.3302.1 (2010), Resource control protocol No. 2 (rcp2) 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 between a policy decision physical entity (PD
27、-PE) and a policy enforcement physical entity (PE-PE): Overview. ITU-T Q.3303.1 Recommendation ITU-T Q.3303.1 (2012), 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): COPS alternative version
28、 2. 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 Recommendation ITU-T Q.3303.3 (2012)
29、, 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 profile version 2. 2 Rec. ITU-T Q.3050 (08/2012) ITU-T Q.3304.1 Recommendation ITU-T Q.3304.1 (2012), Resource control protocol
30、 No. 4 (rcp4) Protocols at the Rc interface between a transport resource control physical entity and a transport physical entity: COPS alternative. ITU-T Q.3304.2 Recommendation ITU-T Q.3304.2 (2012), Resource control protocol No. 4 (rcp4) Protocols at the Rc interface between a transport resource c
31、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 (2011), Resource control protocol No. 5 (rcp5) Protocol at the interface between transport resource control physical entity and policy decision physical entity (Rt i
32、nterface): 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.2006 Recommendation ITU-T Y.2006 (2008), Description of capability set 1 of N
33、GN release 1. ITU-T Y.2007 Recommendation ITU-T Y.2007 (2010), NGN capability set 2. 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 (2010), Functional requirements and architecture
34、 of next generation networks. ITU-T Y.2211 Recommendation ITU-T Y.2211 (2007), IMS-based real-time conversational multimedia services over NGN emulation. ITU-T Y.2271 Recommendation ITU-T Y.2271 (2006), Call server-based PSTN/ISDN emulation. IETF RFC 2616 IETF RFC 2616 (1999), Hypertext Transfer Pro
35、tocol - HTTP/1.1. 3 Definitions None. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: AF-PE Application Function Physical Entity ANI Application Network Interface ASS-PE Application and Service Support Physical Entity CD-PE Content Distribution Physica
36、l Entity COPS Common Open Policy Service COPS-PR COPS usage for Policy Provisioning DTMF Dual Tone Multi-Frequency IP PBX Internet Protocol Private Branch eXchange IPTV IP Television ISDN Integrated Services Digital Network Rec. ITU-T Q.3050 (08/2012) 3 NACF Network Attachment Control Functions NAC-
37、PE Network Attachment Control Physical Entity NGN Next Generation Network NNI Network-Network Interface PD-PE Policy Decision Physical Entity PE-PE Policy Enforcement Physical Entity PSTN Public Switched Telephone Network QoS Quality of Service RCIP Resource Connection Initiation Protocol RACE Resou
38、rce and Admission Control Entity SC-PE Service Control Physical Entity SDP Session Description Protocol SIP Session Initiation Protocol SNI Service Network Interface SNMP Simple Network Management Protocol TRC-PE Transport Resource Control Physical Entity T-PE Transport Physical Entity UE User Equip
39、ment UNI User Network Interface VoD Video on Demand VoIP Voice over IP 5 Conventions None. 6 NGN capability sets 6.1 NGN capability set 1 Capability set 1 is primarily focused on session based conversational services such as telephony and video phone service. Services supported by capability set 1 i
40、nclude: PSTN/ISDN emulation services. PSTN/ISDN emulation services are provided by an NGN to support legacy terminals and interfaces. The PSTN/ISDN emulation services are the same or better than those provided by circuit-switched networks. The PSTN/ISDN emulation services are defined in ITU-T Y.2271
41、. PSTN/ISDN simulation services PSTN/ISDN simulation services provide PSTN/ISDN-like services. The requirements are independent of the media that is used during the communication. PSTN/ISDN simulation services requirements are defined in ITU-T Y.2211. Transport connectivity, communication modes, cod
42、ecs and other capabilities for NGN capability set 1 are described in clause 7 of ITU-T Y.2006. 4 Rec. ITU-T Q.3050 (08/2012) 6.2 NGN capability set 2 Capability set 2 includes features that are necessary to provide basic IPTV services (e.g., linear TV and VoD) in NGN. Therefore, capability set 2 inc
43、ludes ITU-T Recommendations related to NGN-based IPTV. Internet Protocol Version 6 (IPv6) support, multicast support and other capabilities for NGN capability set 2 are described in clause 7 of ITU-T Y.2007. 7 NGN functional architecture 7.1 Overview of NGN architecture NOTE The following text is ba
44、sed on the text provided in clause 7 of ITU-T Y.2012. Figure 1 shows an overview of the NGN functional architecture. The NGN functional architecture supports the UNI, NNI, ANI and SNI reference points as described in clause 6.2 of ITU-T Y.2012. The NGN functions are divided into service stratum func
45、tions and transport stratum functions according to ITU-T Y.2011. To provide these services, several functions are necessary in both the service stratum and the transport stratum, as illustrated in Figure 1. For detailed description of these functions, refer to ITU-T Y.2012. Rec. ITU-T Q.3050 (08/201
46、2) 5 Service StratumTransport StratumTransport FunctionsTransport Control FunctionsService Control and Content Delivery FunctionsApplicationsApplication Support Functions and Service Support FunctionsService Control FunctionsContent Delivery FunctionsNetwork Attachment and Control FunctionsResource
47、and Admission control FunctionsMobility Management and Control FunctionsEnd-User FunctionsFunctions from Other NetworksFunctionsfrom other Service ProvidersANINNISNIUNIService User ProfilesTransport User ProfilesIdM FunctionsControlMediaManagementIdMNOTE Figure 1 is an exact replica of Figure 7-1 of
48、 ITU-T Y.2012. Figure 1 NGN architecture overview 7.2 Generalized NGN functional architecture Clause 9 of ITU-T Y.2012 describes the generalized functional architecture for NGN, including the definitions of the generalized functional entities and reference points. Figure 2 shows the NGN functional a
49、rchitecture framework. For a detailed description of the functional entities and reference points of the generalized NGN functional architecture, refer to clause 9 of ITU-T Y.2012. 6 Rec. ITU-T Q.3050 (08/2012) NGN transport stratumNGN service stratumTransport FunctionsTransport Control FunctionsService Control and Content Delivery FunctionsApplicationsApplication Support Functions and Service Support FunctionsService Control Func
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