1、 ETSI TR 102 276 V1.1.1 (2003-10)Technical Report User GroupUsers Quality of Service Criteria forInternet Access in EuropeETSI ETSI TR 102 276 V1.1.1 (2003-10) 2 Reference DTR/USER-00013 Keywords access, internet, QoS, USER ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +3
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7、d of the 3GPP Organizational Partners. ETSI ETSI TR 102 276 V1.1.1 (2003-10) 3 Contents Intellectual Property Rights4 Foreword.4 Introduction 4 1 Scope 5 2 References 5 3 Definitions, symbols and abbreviations .5 3.1 Definitions5 3.2 Abbreviations .6 4 Purpose.6 5 Determination of QoS criteria relev
8、ant to users.7 5.1 Background 7 5.1.1 Need for Internet services .7 5.1.2 Services access7 5.1.3 Need for QoS 7 5.2 Methodology 7 5.2.1 Derivation of primary set of QoS criteria - for consultation.8 5.2.2 Summary of consultative process with user bodies, regulators and ISPs8 5.2.3 User validation an
9、d ranking of QoS criteria survey.9 5.2.4 Findings of survey 9 5.2.5 Recommended set of QoS criteria 11 6 Recommendations and future work13 Annex A (informative): Matrix from ITU-T Recommendation G.100014 Annex B (informative): QoS criteria identified in Work carried for European Commission.15 Annex
10、C (informative): Primary or basic set of Users QoS criteria for Internet Access16 Annex D (informative): Survey on users QoS criteria for access of services offered by ISPs 18 Annex E (informative): Some considerations for the next stage of work (parameter definition etc.) 20 Annex F (informative):
11、Bibliography.23 History 24 ETSI ETSI TR 102 276 V1.1.1 (2003-10) 4 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-m
12、embers, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/webapp.etsi.org/IPR/ho
13、me.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to th
14、e present document. Foreword This Technical Report (TR) has been produced by ETSI User Group (USER). Introduction The present document describes the methodology used to determine Users Quality of Service (QoS) criteria for Internet Access in Europe, the resulting set of QoS criteria arising from the
15、 application of this methodology and recommendations for follow up work. ETSI ETSI TR 102 276 V1.1.1 (2003-10) 5 1 Scope The scope of the present document is contained within the following features; - The QoS criteria determined are those from the users point of view. These are “designed“ to be repo
16、rtable by the ISPs to enable users to compare performances and ascertain the suitability of an ISP for their particular communication needs. - The QoS criteria chosen are generic. Thus these do not cater for service specific criteria of the many services supported over the Internet and offered by th
17、e ISPs. For example the time taken for delivery of an email is not covered. The QoS criteria identified are considered applicable, in a generic sense, to most, if not all of the service supported by ISPs and accessed by the user. - The QoS criteria identified are applicable for dial up, broadband an
18、d wireless access. - The QoS criteria identified are meant to be defined as parameters. This is outside the scope of the present document. It is a study undertaken by another exercise and the outcome is expected to be published in a separate document, EG 202 057-4 (see bibliography). While interpret
19、ing each criterion consideration ought to be given for features applicable for each form of access. For example, while considering the criterion “number of attempts to login“, this would include the call set up time plus the time taken for login in the case of dial up but only the latter in the case
20、 of broadband access. - These QoS criteria arrived at are based on a methodology described in the present document. This includes consultations with users, regulators and ISPs in a number of European countries. However this is only a snap short of the users requirements considered pertinent among th
21、e European Users in 2003. The applicability of these is to be reviewed when significant change/s occur in the criteria and the order of importance. Despite the fact the criteria chosen are those considered “stable“ and therefore suitable for recommendation as worthy of reporting on a regular basis b
22、y ISPs, it is suggested that these be reviewed in five years time, in year 2008. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. References are either specific (identified by date of publication and/or edit
23、ion number or version number) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. Referenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Ref
24、erence. 1 ITU-T Recommendation G.1000: “Communications Quality of Service: A framework and definitions“. 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: quality: totality of characteristics of an entity tha
25、t bear on its ability to satisfy stated and implied needs Quality of Service (QoS) (in telecommunications): totality of (network and non-network related) characteristics of a telecommunication service on its ability to satisfy stated or implied needs ETSI ETSI TR 102 276 V1.1.1 (2003-10) 6 NOTE 1: T
26、hese characteristics have the following features: 1) QoS is measured and expressed on an end-to-end basis. 2) These are service specific. 3) Characteristics could be network related or non-network related or a combination of these. 4) There could be separate industry and customer oriented performanc
27、e measures. 5) QoS performance parameters would have different priorities for different user sectors. 6) Levels of performance may be different for different user sectors as well as among users within the same user sectors. 7) Quality requirements are not necessarily static. They are dynamic, that i
28、s priorities of parameters and their levels could vary with time. NOTE 2: There are four viewpoints of QoS. These are: - Users QoS requirements; - QoS offered or planned by service provider; - QoS achieved by the service provider; - Users perception of QoS. NOTE 3: In the present document the third
29、viewpoint QoS achieved by the service provider is considered. For fuller treatment of this topic see ITU-T Recommendation G.1000. QoS criteria: descriptive titles of performance criteria QoS parameter: when a QoS criterion is defined with boundaries and scope unambiguously and clearly stated this th
30、en becomes a parameter 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: EU European Union FITCE FederatIon of Telecommunication engineers of the European Community ISP Internet Service Provider ITU-T International Telecommunications Union Telecommunicati
31、ons sector NRA National Regulatory Authority QoS Quality of service SLA Service Level Agreement 4 Purpose The contents of the present document is to be the basis of a document to be produced by the ETSI in which the QoS criteria for access to services provided by ISPs will be defined as parameters t
32、ogether with recommended methods of measurement and presentation of results. Such document could be considered by the National Regulatory Authorities (NRAs) or the European Commission as a discussion document for possible inclusion at a future date as a requirement for ISPs to report delivered quali
33、ty on a regular basis in Europe. It could also be considered by ISPs to report delivered quality on a voluntary basis and for use as template for formulating SLAs with organizations on a bilateral basis. ETSI ETSI TR 102 276 V1.1.1 (2003-10) 7 5 Determination of QoS criteria relevant to users 5.1 Ba
34、ckground 5.1.1 Need for Internet services Use of the Internet supported services has pervaded commercial and residential sectors of the population of a significant proportion of the countries of the globe to the extent it is now an accepted means of transfer of information, communication by email, c
35、ommercial transactions (e-commerce), interest groups communicating and discussing in the form of chat/news groups, playing games electronically and so on. In many sectors Internet is an essential part of communication infrastructure. The trend is for the Internet supported services to pervade more s
36、ectors of the population and become a major and essential part of communication methods. Statistical data on Internet will require rapid updating. About one in ten of the population have Internet access i.e. around 600 millions or more. Europe account for around 200 millions or thereabouts. The tren
37、d is for access to be on the increase. 5.1.2 Services access The main types of accesses are: - Dial up. - Broad band. - Wireless (terrestrial and satellite). The first two may be categorized as fixed or terrestrial and the third would embrace all forms of wireless access, including satellite access.
38、 The main cores of the network are managed by different organizations. The end-to-end quality of service experienced by the user is a sum of the contributions from the core network and access network. In addition the software quality, website characteristics would also contribute towards the quality
39、 of the user experience. With the increasing penetration of digital networks, dial up will become less prevalent. Dial up is expected to be present in not insignificant quantities in some countries of Europe and the current EU member countries for the next 5 to 7 years. Broadband will continue to ex
40、pand in penetration. More sophisticated access methods on wireless can be expected. The access is considered sufficiently stable to warrant QoS criteria to be defined and used for a few years. 5.1.3 Need for QoS With the significant number of users, both residential and commercial it is worth consid
41、ering the value of a set of Quality of service (QoS) criteria that may be reported by the ISPs for the benefit of both themselves and the users. Users will benefit by being in an informed position to determine which ISP is best suited for their communication needs from the data on delivered quality.
42、 The ISPs could benefit by identifying, in due course, the QoS requirements of the different segments of the population. This could enable them to choose the niche in the market most suited to their philosophy and resource allocation. The present document describes a methodology to determine users Q
43、oS criteria and recommends a list for regular reporting by the ISPs. 5.2 Methodology The principal steps in the determination of Users QoS criteria are: - Arrive at a primary set of QoS criteria based on work already carried out in this area and complementing these with the application of the matrix
44、 (see annex A) from ITU-T Recommendation G.1000 which is specifically intended to arrive at users QoS criteria for any telecommunication service; - Carry out a consultative process with user representatives, regulators and ISP representatives from a number of countries in Europe to arrive at a revis
45、ed and consensual set of QoS criteria from the primary set; ETSI ETSI TR 102 276 V1.1.1 (2003-10) 8 - Validate the secondary set against a user population. At the end of the customer validation, which takes the form of a survey, a final set of QoS criteria are arrived at. These are listed in clause
46、5.2.5. Clauses 5.2.1 through 5.2.4 describe the salient points of the methodology in action. 5.2.1 Derivation of primary set of QoS criteria - for consultation A primary or basic set of QoS criteria which would form the basis for consultation with representatives of the users, regulators and ISPs wa
47、s determined. A search over the Internet for published work in this area for the European scene resulted in identifying the work carried out for the European Commission described in a report “Quality of service Parameters for Internet Service provision“ (see bibliography). Other works mainly dwelt o
48、n Network Performance vaguely masquerading under the umbrella of “Quality of Service“. Such works were of benefit and information to the network providers and ISPs but of little direct use to the users. To arrive at the users basic set of QoS criteria, a matrix intended for the identification of suc
49、h criteria and published in the ITU-T Recommendation G.1000 1 was made use of. Application of the concepts of the matrix and complementing these with the QoS criteria of the report “Quality of service Parameters for Internet Service provision“ (see bibliography, also illustrated in annex B) produced the primary or basic list in annex C. The coverage of the criteria was intended to include all reasonable performance aspects of the access to the Internet. A compromise was arrived to balance between the granularity of the number of criteria to be chosen.
