ITU-T SERIES Q SUPP 27-1999 Technical Report Overview of Signalling and Protocol Framework for an Evolving Environment (SPFEE) Series Q Switching and Signalling (Study Group 11)《技术.pdf

1、INTERNATIONAL TELECOMMUNICATION UNION ITU=T TELECOMMUNICATION STAN DARD IZATION SECTOR OF ITU Series Q Supplement 27 (1 2/1999) SERIES Q: SWITCHING AND SIGNALLING Technical Report: Overview of Signalling and Protocol Framework for an Evolving Environment (SPFEE) ITU-T Q-series Recommendations - Supp

2、lement 27 (Formerly CCITT Recommendations) I ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN SPECIFICATIONS OF SIGNALLING SYSTEMS No. 4 AND No. 5 SPECIFICATIONS OF SIGNALLING SYSTEM No. 6

3、SPECIFICATIONS OF SIGNALLING SYSTEM R1 SPECIFICATIONS OF SIGNALLING SYSTEM R2 DIGITAL EXCHANGES INTERWORKING OF SIGNALLING SYSTEMS SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 1 PUBLIC LAND MOBILE NETWORK INTERWORKING WITH SATELLITE MOBILE SYSTEMS INTELLIGENT NE

4、TWORK SIGNALLING REQUIREMENTS AND PROTOCOLS FOR IMT-2000 BROADBAND ISDN INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING CLAUSES APPLICABLE TO ITU-T STANDARD SYSTEMS Q.1-Q.3 4.4-4.59 4.60-4.99 Q.lOO-Q.119 Q.120-4.249 4.250-4.309 4.3 10-4.399 4.400-4.499 Q.500-4.599 4.600-4.699 4.700-4.849 Q.850-Q.

5、999 Q.1000-Q.1099 Q. 1100-Q. 1199 4.1200-4.1699 Q. 1700-4.1799 4.2000-4.2999 For further details, please refer to the list of ITU-TRecomrnendations. Supplement 27 to ITU-T Q-series Recommendations Technical Report: Overview of Signalling and Protocol Framework for an Evolving Environment (SPFEE) Sum

6、mary This Supplement contains objectives, scope, requirements, approaches, and introductory overview of Signalling and Protocol Framework for an Evolving Environment (SPFEE). It provides a signalling and protocol framework for an evolving environment and related specification(s) where applicable for

7、 those telecommunications-related systems in the coming broadband and information era. Primary area of SPFEE is Session related framework and specifications (e.g. interfaces provided for “clients“ of Session related components and those required from them to the underljing components). SPFEE covers

8、the control plane (signalling) aspects, with management plane aspects also included as a part of the problem domain. Source Supplement 27 to ITU-T Q-series Recommendations was prepared by ITU-T Study Group 11 (1 997-2000) and approved under the WTSC Resolution 5 procedure on 3 December 1999. Keyword

9、s Access, Computational model, IDL, Information model, ODP, Reference Point, Service, Session. FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent

10、 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 Telecommunication Standardization Conference (WTSC), which meets every four years, establishe

11、s 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 WTSC Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standard

12、s are prepared on a collaborative basis with IS0 and IEC. NOTE In this publication, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. INTELLECTUAL PROPERTY RIGHTS IT draws attention to the possibility that t

13、he practice or implementation 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 devel

14、opment process. As of the 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, implementors are cautioned that this may not represent the latest information and are therefore st

15、rongly urged to consult the TSB patent database. O ITU 2001 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the ITU. CONTENTS Page 4 5 5.1 5.

16、2 5.3 5.4 6 7 7.1 7.2 7.3 7.4 Scope References Definitions Abbreviations . Requirements Business Drivers . Trends toward the telecommunications environment. year 2000+ 5.2.1 Introduction . 5.2.2 Customer trends by the year 2000-t . 5.2.3 Network trends 5.2.4 Technological trends . Strategic issues f

17、or standardization . 5.2.5 5.2.6 The role of standardization Requirements Objectives . Overview of methodology Business Modeling Concepts . A Framework for the propagation of Requirements in an Open Telecommunication Market Scope Business Modelling Concepts 7.2.1 Framework 7.2.2 Segmentation of refe

18、rence points 7.2.3 Combination of business roles into business administrative domains 7.2.4 Delegation . Business role types . 7.3.1 Consumer 7.3.2 Retailer 7.3.3 Broker 7.3.4 Third-party service provider 7.3.5 Connectivity provider Business relationships types . 7.4.1 Generic access inter-business

19、administrative domain interactions . 7.4.2 Retailer business relationship (Ret) . 7.4.3 Broker business relationship (Bkr) 7.4.4 Third-party business relationship (3Pty) . 7.4.5 Retailer-to-Retailer business relationship (RtR) . 1 1 2 4 4 4 4 5 6 7 8 8 10 10 12 13 13 13 13 15 16 17 19 19 20 20 21 22

20、 23 23 23 24 24 24 . 7.4.6 7.4.7 7.4.8 7.4.9 Connectivity service business relationship (Cons) . Terminal connection business relationship (TCon) Layer network federation business relationship (LNFed) . Client-Server Layer Network relationship (CSLN) 7.5 Business model . 8 Overall Architecture Descr

21、iption . 8.1 Information Model of Major Session Classes 8.1.1 Access Session 8.1.2 Service Session 8.1.3 Provider Service Session . 8.1.4 Usage Service Session . 8.1.5 Resource (Communication Session) . 8.2.1 Definition of Component 8.2.2 Overview of Components 8.2 Computational Model of Major Sessi

22、on Classes Appendix I . Example of delegation . Appendix II . Application examples of business modelling concepts 11.1 11.2 11.3 11.4 Present day VoD example Connectivity value adding example . “Internet“ home business example . Outsourcing of management example Page 24 25 25 25 25 28 28 29 29 30 30

23、 30 30 30 33 37 38 38 39 40 42 Supplement 27 to ITU-T Q-series Recommendations Technical Report: Overview of Signalling and Protocol Framework for an Evolving Environment (SPFEE) (Geneva, 1999) 1 Scope The goal of Signalling and Protocol Framework for an Evolving Environment (SPFEE) is to provide a

24、signalling and protocol framework for an evolving environment and related specification(s) where applicable for those telecommunications-related systems in the coming broadband and information era. SPFEE will take the opportunity to incorporate advantages of the latest information technologies, e.g.

25、 ODP, for achieving its goal, while keeping interoperability with evolving telecommunications technologies including IN CSx (x = 1,2,3,), TMN, B-ISDN, IMT-2000, UPT, and Multimedia: o SPFEE will be based on distributed processing technologies and object orientation. SPFEE will use the enterprise, in

26、formation, and computational viewpoints as defined in o Reference Model of Open Distributed Processing (RM-ODP). The enterprise viewpoint needs to be examined for clarifying the requirements. 1) “correlate“ SPFEE with other ongoing activities, such as IN CS-3, TMN, and B-ISDN, e.g. to provide evolut

27、ionary paths for them; and 2) intenvork with “legacy“ systems. of SPFEE, although such aspect may be covered by referring some example configuration scenarios. provided for “clients“ of Session related components and those required from them to the underlying components). SPFEE covers the control pl

28、ane (signalling) aspects, with management plane aspects also included as a part of the problem domain. formal specification languages, e.g. IDL and ODL. o It is recognized that there are needs to: e The ownership of each entity should be generally separated from the technical development o Primary a

29、rea of SPFEE is Session related framework and specifications (e.g. interfaces o A part of final outputs fi-om SPFEE will be specifications of objects (and their interfaces) in 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this te

30、xt, constitute provisions of this Supplement. At the time of publication, the editions indicated were valid. All supplements and other references are subject to revision; all users of this Supplement are therefore encouraged to investigate the possibility of applying the most recent edition of the s

31、upplements and other references listed below. A list of the currently valid ITU-T Recommendations and supplements is regularly published. i ITU-T Recommendation X.901 (1997) I ISO/IEC 10746-1 :1998, Information technology - Open distributed processing -Refreme Model: Overview. ITU-T Recommendation X

32、.902 (I 995) 1 ISOIEC 10746-2: 1996, Information technology - Open distributed processing - Reference Model: Foundations. 2 3 ITU-T Recommendation X.903 (1 995) I ISO/IEC 10746-3: 1996, Information technology - Open distributed processing - Reference Model: Architecture. ITU-T Recommendation X.920 (

33、1997) I ISO/IEC 14750:1999, Information technology - Open distributed processing -Interface definition language. ITU-T Recommendation Z. 130 (1 999), ITU Object definition language. ITU-T Q-senes Recommendations - Supplement 28 (1999), Signalling and Protocol Framework for an Evolving Environment (S

34、PFEE) specifications for service access. 4 5 6 3 Definitions This Supplement defines the following terms: 3.1 business administrative domain: A business administrative domain is defined by the requirements of one or more business roles and is governed by a single business objective. 3.2 business rel

35、ationship: An association between two business roles. 3.3 business role: The expected function performed by a stakeholder in a telecommunications business environment. 3.4 contract: A contract is the context defining constrains for one or more reference points to operate under. 3.5 reference point:

36、The manifestation of a business relationship in the telecommunication system. The reference point consists of several viewpoint related specifications governed by a contract. 3.6 stakeholder: A party that holds a business interest or concern in the telecommunications business. A stakeholder owns one

37、 or -more business administrative domains. 3.7 session: A temporary relationship among a group of objects that are assigned to collectively fulfill a task for a period of time. A session has a state that may change during its lifetime. The session represents an abstract, simplified view of the manag

38、ement and usage of the objects and their shared information. 3.8 access session: A temporary relationship established when two domains are bound together securely. The early stage of the access session is the agreement of terms between domains to continue interaction and authentication. Security pro

39、tection may be delegated to subsequent service sessions. 3.9 service session: A temporary relationship represented by information and functionality related to capabilities to execute, control and manage services. The capabilities include service specific control, generic session controls, and manage

40、ment capabilities. A service session is an instance of a service type and includes information necessary to negotiate QoS, security context, use of service and communication resources, and to control relationships among participating members of the service session. 3.10 communication session (resour

41、ce): A temporary relationship represented by a general, service view of stream connections and a network technology-independent view of the communication resources required to establish end-to-end connections. A communication session can handle multiple connections that may be multipoint and multime

42、dia. 4 Abbreviations This Supplement uses the following abbreviations: 3Pty anonUA AS as-UAP Bkr CO COG Cons cs CSLN DPE FCAPS IA IDL LNFed NamedUA ODL ODP OMT PA Ret RP RtR sc SF SPFEE ss SSM ss-UAP Tcon UA UAP USM Third-party inter-domain reference point Anonymous User Agent Access Session User Ap

43、plication (Access Session related) Broker inter-domain reference point Computational Object Computational Object Group Connectivity Service inter-domain reference point Communication Session Client-server layer inter-domain reference point Distributed Processing Environment Fault, Configuration, Acc

44、ounting, Performance, Security Initial Agent Interface Definition Language Layer network Federation inter-domain reference point Named User Agent Object Definition Language Open Distributed Processing Object Modelling Technique Provider Agent Retailer inter-domain reference point Reference point Ret

45、ailer-to-Retailer inter-domain reference point Service Component Service Factory Signalling and Protocol Framework for an Evolving Environment Service Session Service Session Manager User Application (Service Session related) Terminal Connection inter-domain reference point User Agent User Applicati

46、on User Service Session Manager 5 Requirements 5.1 Business Drivers Major business drivers that lead to the requirements described in this Supplement include: 8 interconnection among various types of networksservers; advances within broadband networks and services; 8 Internet and on-line services; e

47、 mobile communications; e ubiquitous user access to services; support both standard and non-standard services; intenvorkable open interfaces with existing ISDN, PSTN, etc. e e 5.2 “The diflculty lies, not in the new ideas, but in escaping from the old ones, which ramifi, for those brought up as most

48、 of us have been, into every corner of our minds.“ (British economist John Maynard Keynes, circa 1925 .) Trends toward the telecommunications environment, year 2000+ 5.2.1 Introduction There is a fundamental and rapid shift taking place in the telecommunications sector throughout the world: e The sh

49、ift fi-om monopoly supply to an open competitive market in services and equipment. The shift from a networkhechnology based platform to a sohare/marketing based platform. The shift from separate industries for communications, IT and broadcasting to convergence The shift fi-om national to regional (e.g. European) and then to global approaches concerning The shift from proprietary technologies and solutions to increased emphasis on standards to This leads to a medium term need for the regulation to encourage competition and measures to ensure effective and fair interconnectio