ETSI SR 001 677-1999 Seamless Service Offering Giving Users Consistent Access to Application Service Portfolios Independent of Access Network and Core Network Companion Document《提供_1.pdf

1、 SR 001 677 V1.1.1 (1999-06)Special ReportSeamless service offering;Giving users consistent access toapplication/service portfoliosindependent of access network and core network;Companion documentCOPYRIGHT 2000 European Telecommunications Standards InstituteInformation Handling Services, 2000ETSIETS

2、I SR 001 677 V1.1.1 (1999-06)2ReferenceDSR/GA-00001 (fj000ict.PDF)KeywordsGMMETSIPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16Siret N 348 623 562 00017 - NAF 742 CAssociation

3、 but non lucratif enregistre laSous-Prfecture de Grasse (06) N 7803/88Internetsecretariatetsi.frIndividual copies of this ETSI deliverablecan be downloaded fromhttp:/www.etsi.orgIf you find errors in the present document, send yourcomment to: editoretsi.frCopyright NotificationNo part may be reprodu

4、ced except as authorized by written permission.The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 1999.All rights reserved.COPYRIGHT 2000 European Telecommunications Standards InstituteInformation Handling Services, 2000ET

5、SIETSI SR 001 677 V1.1.1 (1999-06)3ContentsForeword 5Executive summary 51 Scope71.1 Objective 71.2 The definition of multimedia and GMM 71.3 Quo vadis. 71.3.1 Rapid growth 81.3.2 Mobility trends in users behaviour 111.3.3 Greater bandwidth but less mobile? . 121.3.4 The impact of the Internet Protoc

6、ol (IP) 132 References153 Abbreviations .154 The business perspective165 Change drivers .185.1 Implications of the drivers for GMM. 195.1.1 The impact of IP. 195.1.2 Convergence. 195.1.3 Globalization of information 195.1.4 The implications in more detail 205.1.4.1 Unbundling of services . 205.1.4.2

7、 Interworking . 215.1.4.3 Quality of service issues . 225.1.4.4 Security issues 235.1.4.5 Network efficiency . 235.1.4.6 Mobile IP 235.1.5 Key requirements . 245.1.5.1 Requirements concerning service architectures 245.1.5.2 Requirements concerning interworking 245.1.5.3 Requirements concerning Quali

8、ty of Service 245.1.5.4 Requirements concerning security 256 Other issues affecting GMM266.1 Management. 266.1.1 Network management. 266.1.2 Service management. 266.1.3 Mobility management. 266.1.4 Content management and protection 276.2 High-speed access 276.3 Non-technical enablers and barriers. 2

9、86.3.1 Regulatory issues 286.3.2 Roaming agreements 296.3.3 Human interface issues. 297 A revised GMM model 317.1 The terminal equipment domain 338 Conclusions359 Recommendations 369.1 Standards-writing issues. 369.2 Non-standards-writing issues . 379.3 The GMM model . 37COPYRIGHT 2000 European Tele

10、communications Standards InstituteInformation Handling Services, 2000ETSIETSI SR 001 677 V1.1.1 (1999-06)4Bibliography.38History42COPYRIGHT 2000 European Telecommunications Standards InstituteInformation Handling Services, 2000ETSIETSI SR 001 677 V1.1.1 (1999-06)5ForewordThis Special Report (SR) has

11、 been produced by the Architecture Framework Group (AFG) of the ETSI GlobalMultimedia Mobility Co-ordination Group (GMM CG).Executive summaryETSIs report “GMM - Global Multimedia Mobility - a standardization framework for multimedia mobility in theinformation society“ was published in 1996. It addre

12、ssed a very challenging goal - to provide a standardizationframework for the emerging telecommunications systems, services and architectures. It encompassed a broad anddiverse set of issues, not all of which were technical, nor appropriate for standardization. As a result, that study had tosift the

13、commercial and political from the technical, then to determine what were the implications for the standardizersand others, and finally attempt to package the conclusions in a coherent, clear and helpful format.The authors of the present document (intended as a “Companion“ to the original report) fac

14、ed similar challenges. Theissues it addresses are equally complex. Even in the short period since the appearance of the original report technology -and the entire telecommunications business - has moved on significantly. Work is well advanced on the definition anddevelopment of “Third Generation“ mo

15、bile systems, designed for multimedia use and destined to have a truly world-wide presence. In addition, the emerging strength of “The Internet“ has been considerably more dramatic than couldhave been realistically imagined just a couple of years ago. Such matters were not taken into account in a di

16、stinctive wayin the original GMM Report.That said, the 1996 report still remains valid - it just does not go far enough. So in drafting this GMM CompanionDocument its authors sought to take an orthogonal view - this time from the services and the user perspective. This isconsidered reasonable, as mu

17、ch of the telecommunications business is actually based on selling services - nottechnology.In fact the nature of the entire telecommunications business is changing rapidly. It is characterized, as never before, by:massive merger and acquisition activity; the creation of global alliances (currently

18、undergoing considerable “churn“); theemergence of many new entrants, most of them without the legacy of existing infrastructures and traditionaltelecommunications attitudes; a strong and steady convergence of technologies; continued liberalization, underwritten bynew regulatory actions; and a growin

19、g consumer orientation, especially in the mobile communication market.The concept of Global Multimedia Mobility sits in the middle of this complex matrix and is impacted strongly by all theabove characteristics. Sifting through the many issues, the authors concluded that there are three principal dr

20、ivers, andthe present document focuses mainly on these. Firstly it acknowledges the enormous impact of “The Internet“ and theInternet Protocol (IP) on daily lives as well as on technology and network architectures. Related to this phenomenon isthe more general evolution of the Information Society, w

21、ith enormous value now being attached to the ability to accessinformation, whenever and wherever needed, and predictions of massive growth in electronic commerce. Finally there isthe continuing convergence between telecommunications, information technology, broadcasting and entertainment (alsofuelle

22、d by the Internet), as well as convergence between technologies, and between patterns of use.A further dimension of major significance is the huge growth in mobile communications. This report notes that not onlyare the numbers of mobile communications subscribers set to overtake fixed subscribers in

23、 the next few years, but thatthe “slow mobility“ (typically walking pace) sector is growing at a very rapid pace. Moreover it is in that sector that thegreatest demand for multimedia (and thus for bandwidth) can be expected.These observations lead to a conclusion that core transport networks will be

24、 increasingly dedicated to “IP-like“ trafficand will have to be designed accordingly, whilst access networks (mobile and fixed) will need to offer the bandwidthand flexibility to connect with a variety of core networks and services. At the service level, consistency of serviceofferings and presentat

25、ion, and freedom of choice for users, are seen as being imperative (so far as they are technicallyfeasible). Weaving all these elements together is the need for seamlessness.The authors have concluded that the basic ideas and key messages behind the original GMM model are still valid.However, the si

26、gnificance of service provisioning was lost in the former model, and it was felt appropriate to revise themodel slightly in order to give service provisioning the separation and visibility that it merits.The ability to fragment networks and service structures (thanks to unifying mechanisms such as t

27、he Internet Protocol)then leads to questions about traditional telecommunications standardization. Is it still justifiable to standardize end-to-COPYRIGHT 2000 European Telecommunications Standards InstituteInformation Handling Services, 2000ETSIETSI SR 001 677 V1.1.1 (1999-06)6end network architect

28、ures? The shift of emphasis towards services, mobility and seamlessness should challengestandards bodies to consider possible new opportunities (notably in the areas of terminals, services and interfaces),whilst continuing the difficult task of determining just what should and should not be standard

29、ized. ETSI in particularneeds to consider future directions for its activities (there appears to be a strong case for new work on optical transportnetwork standards, interface standards and service management, in addition to sustained effort on the Institutes high-speed access and IP-related work).

30、Beyond the standard-writing tasks the entire strategy of ETSIs role in thetelecommunications industry must be kept under constant review. Strategic alliances should continue to be forged withglobal and regional partners (certainly not just standards organizations) in order to maintain ETSIs contribu

31、tion toworld-wide telecommunications. Difficult issues such as Intellectual Property Rights and the promotion of standardsmust be addressed with energy, and ETSI must also strive to ensure that the services it gives to its members (in realitythe creators as well as the users of ETSI standards) remai

32、n appropriate and effective.This report attempts to address many of these issues. Most need to be worked through further; thus the value of thisCompanion Document and the original GMM report can only be realized when the concepts are turned into actions.“Vision is not enough, it must be combined wit

33、h venture“ - Vaclav HavelCOPYRIGHT 2000 European Telecommunications Standards InstituteInformation Handling Services, 2000ETSIETSI SR 001 677 V1.1.1 (1999-06)71 Scope1.1 ObjectiveThe authors of the present document have analysed the impact on the GMM report and specifically the GMM model inthe sprit

34、 of the fast changing communication environment. The key goal was to investigate if the GMM report and itsmodel which were widely accepted by the industry still are valid and if not, what additional views have to be considered.The current trends in telecommunications, and the associated domains of i

35、nformation technology, broadcasting andentertainment, are profound and rapid. To keep its size reasonable and to avoid undue complexity, the present documentcan only provide an overview of those trends and their many consequences. Behind this study lies a great wealth of moredetailed material. Reade

36、rs wishing to explore the issues in greater depth are referred to that material.1.2 The definition of multimedia and GMMIt may be useful to be reminded of the following definitions from the original GMM Report:Multimedia Information - audio, graphics, pictures, text, full motion video or animation -

37、 available as digitaldata types, allowing utilization of a mixture of one or more data types to be indexed, stored,retrieved and/or transmitted by wireline and/or radio network(s).GMM (Global Multimedia Mobility) GMM offers a standardization framework which takes account ofexisting and emerging syst

38、ems and enables a variety of services (ranging from voice to multimedia)to become progressively available across an increasing variety of networks.For the purposes of the present document, it is acknowledged that the end user may wish to access or communicate usingvoice, facsimile, data, video, musi

39、c, graphics, etc., either separately or in various combinations at the same time.Furthermore, the user will generally expect networks to be transparent to whatever form and combinations of “traffic“ heor she chooses to convey, both now and in the future. This report attempts to define the principal

40、technical and non-technical issues that need to be respected if those expectations are to be satisfied.1.3 Quo vadisThe telecommunications market is one of the fastest growing and most rapidly changing markets in the world. Conceptssuch as fixed networks and mobile networks which have been important

41、 differentiators in the 1980s and 90s willbecome blurred in the next generation of services and systems which are due to be introduced at the beginning of thethird Millennium. There is also a very marked convergence between telecommunications and information technology(IT), most evident in the impac

42、t of the Internet and the rapid development of many types of multimedia services. “ThePC“ is becoming a commonplace piece of domestic furniture, teleworking is catching on, whilst forms of informationthat have their roots in the entertainment industry now form part of business and personal communica

43、tions and aredelivered to home and office - and to people on the move - using telecommunications and IT.These trends have been particularly evident in the place of work and in the home, leading to a consequentialconvergence between residential and business systems. Electronic commerce has still to a

44、chieve widespread acceptance(especially in the retail sector), but even now “e-commerce“ between businesses is in the multi-billion dollar range, withmassive growth predicted in the next few years. Finally, the adoption of mobile telephones and other mobile devices hastaken place astoundingly rapidl

45、y around the world and users expect this mobile capability (and the services that go withit) to follow them wherever they go - whether they are global travellers or just visit the local shop.From a user perspective, one thing is very clear: telecommunications network technologies and architectures h

46、ave littlesignificance, except to the extent that they enable or constrain the availability of services and mobility. This is a majorchange in perception from the days when users understood that different services often meant different networks. Now,thanks to trends such as the creation of mobile te

47、lecommunications as a consumer market, users expect (as noted in theoriginal GMM Report) individualized products and services at mass-market prices. Such has been the success of thisapproach that many users of mobile services use their mobile terminals in preference to the fixed network, even if the

48、irmobility requirements are minimal.COPYRIGHT 2000 European Telecommunications Standards InstituteInformation Handling Services, 2000ETSIETSI SR 001 677 V1.1.1 (1999-06)8Thus the modern emphasis is on applications rather than network architectures: from the perspective of an application,the various

49、networks are - to a large extent - simply different physical implementations of information transport betweenendpoints. In practice it is not quite that simple, of course. Nevertheless, core networks are basically transparent andintelligent, and therefore flexible. That really put the focus on the access networks as the variable element in informationtransport.The authors of this study have analysed the original GMM report and the model presented there against a number ofdrivers that appear to reflect current and predicted trends. The first three in the following list w