1、ETSI TS 101 329-3 2.1.2(2002-01) Technical Specificafion Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON) Release 3; End-to-end Quality of Service in TIPHON systems; Part 3: Signalling and control of end-to-end Quality of Service (QoS) 2 ETSI TS 101 329-3 V2.1.2 (2002-01
2、) Reference RTS/TIPHON-05003 2a Keywords internet, network, interoperability, protocol, QoS, telephony, IP, quality, service, signalling ETSI 650 Route des Lucioles F-O6921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 O0 Fax: +33 4 93 65 47 16 Siret No 348 623 562 00017 - NAF 742 C Associati
3、on but non lucratif enregistre la Sous-prfecture de Grasse (06) No 7803/88 Important notice Individual copies of the present document can be downloaded from: http:l/w.etsi .orq The present document may be made available in more than one electronic version or in print. In any case of existing or perc
4、eived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should
5、be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at 3 If you find errors in the present document, send your comment to: Cori vriaht Notifica tion No part may be reproduced except as authorized b
6、y written permission. The copyright and the foregoing restriction extend to reproduction in all media. O European Telecommunications Standards Institute 2002. All rights reserved. ETSI 3 ETSI TS 101 329-3 V2.1.2 (2002-01) Contents Intellectual Property Rights 5 Foreword . 5 Introduction 6 1 2 3 3.1
7、3.2 4 5 5.1 5.1.1 5.1.2 5.1.3 5.2 5.2.1 5.2.2 5.2.3 Scope 7 References 7 Definitions and abbreviations . 7 Definitions 7 Abbreviations 8 Void 9 QoS architecture . 9 TIPHON architectural planes . 9 IP telephony application plane 9 IP transport plane 9 Management plane 9 Service and transport domains
8、10 Void 10 Void 10 End-to-end QoS control 10 5.2.3.1 5.2.3.2 5.3 5.3.1 5.3.2 5.3.3 5.3.4 5.3.5 5.3.6 5.3.7 5.4 5.4.1 5.4.2 5.4.3 5.4.4 5.4.5 5.4.6 Reference point QI1 14 5.4.7 Reference point QI2 14 5.4.8 5.4.9 Reference point QI4 14 5.4.10 Reference point QI5 14 6 Characterizing QoS 14 6.1 Service,
9、 application and transport level QoS parameters . 14 6.2 Interfacing to the Transport Plane 15 6.2.1 Transport QoS parameters 16 6.2.2 Traffic descriptor 17 7 Allocating the QoS budget across service and transport domains 17 7.1 Dynamic signalling of Transport QoS Parameters 18 7.2 18 7.3 19 7.3.1 1
10、9 7.3.2 19 8 QoS Primitives . 20 IP application plane control . 10 Transport plane control . 11 QoS Functional Elements . 12 QoS Service Manager (QoSM) . 12 QoS Policy Element (QoSPE) 12 Transport Resource Manager (TRM) 12 Transport Policy Entity (TPE) 12 Interconnect Function (ICF) . 12 Transport F
11、unction (TF) . 12 Relationship between functional entities 13 QoS reference points 13 Reference point QC 1 13 Reference point QC2 13 Reference point QS4 . 13 Reference point QT2 . 13 Reference point QT 1 . 14 Reference point QI3 14 ETSI 4 ETSI TS 101 329-3 V2.1.2 (2002-01) 8.1 8.1.1 8.1.2 8.1.3 8.1.
12、4 8.1.5 8.1.6 8.1.7 8.1.8 8.1.9 8.2 8.2.1 8.2.2 8.2.3 8.2.4 8.2.5 8.2.6 8.2.7 8.2.8 8.2.9 8.2.10 8.2.11 . QoS Primitives . 20 QC 1 and2 . 20 QS4 . 21 QT2 . 21 QT1 . 21 QI 1 22 QI2 22 QI3 22 QI4 23 QI5 23 QoS Parameters Groups . 24 QoS parameter groups 24 QC1 25 25 25 26 26 26 QI2 26 QI3 27 QI4 27 QI
13、5 27 9 QoS Procedures (Informational) 27 9.1 Third Party Establishment of QoS Controlled Bearer 27 9.2 First Party Establishment of QoS Controlled Bearer 30 9.3 Hybrid Third Party/First Party Establishment of QoS controlled bearer via authorization tokens . 33 9.4 Terminal Registration . 36 Annex A
14、(informative): Examples of end-to-end QoS control 37 A . 1 One service domaidone transport domain 37 A.2 One service domains/multiple transport domains - Case I . 38 A.3 One service domaidmultiple transport domains - Case II . 39 A.4 Multiple service domains/multiple transport domains . 40 A.5 Multi
15、ple service domains/multiple transport domains . 40 A.6 Roaming . 41 A.7 Provisioned VPN 42 Annex B (informative): Examples of Mapping of QoS Architecture Functional Elements to Physical Elements 43 Annex C (informative): Bibliography . 44 History 45 ETSI 5 ETSI TS 101 329-3 V2.1.2 (2002-01) Intelle
16、ctual 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-members, and can be found in ETSI SR O00 314: “Intellectual Property Rights
17、 (7PRs); Essential, orpotentially Essential, IPRs notlJied to ETSI in respect ofETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (5). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by E
18、TSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR O00 3 14 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by ETSI Project Telecommuni
19、cations and Internet Protocol Harmonization Over Networks (TIPHON). The present document is part 3 of a multi-part deliverable covering End-to-end Quality of Service in TIPHON systems, as identified below: TR 101 329-1: TS 101 329-2: TS 101 329-3: TS 101 329-5: TR 101 329-6: “General aspects of Qual
20、ity of Service (QoS)“; “Definition of speech Quality of Service (QoS) classes“; “Signalling and control of end-to-end Quality of Service (QoS)“; “Quality of Service (QoS) measurement methodologies“; “Actual measurements of network and terminal characteristics and performance parameters in TIPHON net
21、works and their influence on voice quality“; “Design guide for elements of a TIPHON connection from an end-to-end speech transmission performance point of view“. TR 101 329-7: Quality of Service aspects of TIPHON Release 4 and 5 Systems will be covered in TS 102 024 and TS 102 025 respectively, and
22、more comprehensive versions of the Release 3 documents listed above will be published as part of Release 4 and 5 as work progresses. ETSI 6 ETSI TS 101 329-3 V2.1.2 (2002-01) I n t rod uct ion The present document forms one of a series of technical specifications and technical reports produced by TI
23、PHON Working Group 5 addressing Quality of Service (QoS) in TIPHON Systems. The structure of this work is illustrated in figure 1. Introduction TR 101 329-1 General Aspects of QoS Definition of 5 Speech Classes TS 101 329-2 Speech QoS Classes t GenericQoS Specific Aspects of QoS TS 101 329-3 QoS Con
24、trol TS 101 329-5 Measure- ment Methods TR 101 329-6 Actual Test Results TR 101 329-7 Design Gu idelines QoS signalling requirements Measurement methodologies Repository of real test results Useful info for designers Figure 1: Structure of TIPHON QoS Documentation for Release 3 The present document,
25、 describes a framework for the signalling and control of end-to-end Quality of Service in TIPHON Systems. ETSI 7 ETSI TS 101 329-3 V2.1.2 (2002-01) 1 Scope The present document describes a framework for enabling the end-to-end QoS levels defined in TS 101 329-2 i to be signalled and controlled in TI
26、PHON systems. The mechanisms involved operate between TIPHON terminals, IP telephony Service Providers (ITSPs), and network transport systems, and provide a flexible means for the dynamic allocation of QoS parameters across these entities in order to meet the QoS Service Classes defied in TS 101 329
27、-2 i. The functional entities involved in the QoS signalling and control are defied, as are the requirements of the reference points between these functional entities. The QoS parameters and information flows used to establish the required Service QoS levels are also specified. The Application Plane
28、 mechanisms described in the present document are intended to be independent of the transport QoS mechanisms used within the underlying IP networks. The emphasis of the present document is on media QoS (primarily voice, but the mechanisms are also applicable to other media types). Issues related to
29、performance of the signalling channels are outside the scope of the present document. TS 101 3 14 2 describes how this QoS framework fits into the overall TIPHON architecture and details of the signalling involved are described in TS 10 1 47 1 3. 2 Re fe re nces The following documents contain provi
30、sions which, through reference in this text, constitute provisions of the present document. References are either specific (identified by date of publication andor edition number or version number) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific refer
31、ence, the latest version applies. il ETSI TS 101 329-2: “Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON) Release 3; End-to-end Quality of Service (QoS) in TIPHON systems; Part 2: Definition of speech Quality of Service (QoS) classes“. ETSI TS 101 3 14: “Telecommunicatio
32、ns and Internet Protocol Harmonization Over Networks (TIPHON); Network architecture and reference configurations; TIPHON Release 2“. ETSI TS 101 471: “Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON); Signalling for calls between an H.323 terminals and terminals in a Swi
33、tched-Circuit Network (SCN); Phase III: Scenario 1, 2,3, and 4“. 21 31 3 3.1 Definitions and abbreviations De fi nit ions For the purposes of the present document, the following terms and definitions apply: IP Telephony Service Provider (ITSP): service provider providing IP telephony services NOTE:
34、The same business entity may act as both a Transport Network Operator and an IP Telephony Service Provider. Interconnect Function (ICF): functional entity that interconnects Transport Domains ETSI 8 ETSI TS 101 329-3 V2.1.2 (2002-01) NOTE: It provides a policy andor administrative boundary and may p
35、olice authorized media flows between two Transport Domains to ensure they are consistent with the QoS policy specified by the relevant Transport Resource Manager Quality of Service Manager (QoSM): functional entity that mediates requests for end-to-end QoS in accordance with policy determined by the
36、 QoSPE NOTE: It communicates with, other QoSMs and with TRMs to determine, establish and control the offered QoS. Quality of Service Policy Element (QoSPE): functional entity that manages IP Telephony QoS policies and provides authorization of permitted and default QoS levels NOTE: It receives reque
37、sts from and issues responses to QoSMs to establish the authorized end-to-end QoS levels. service domain: collection of physical or functional entities offering IP telephony services under the control of an IP telephony service provider which share a consistent set of policies and common technologie
38、s Transport Domain (TD): collection of transport resources sharing a common set of policies, QoS mechanisms and transport technologies under the control of a transport network operator transport network collection of transport resources which provide transport functionality transport network operato
39、r: business entity operating a Transport Network Transport Policy Entity (TPE): functional entity that maintains the policies of a Transport Domain Transport Resource Manager (TRM): functional entity that applies a set of policies and mechanisms to a set of transport resources to ensure that those r
40、esources are allocated such that they are sufficient to enable QoS guarantees across the domain of control of the TRM Transport Function (TF): functional entity representing the collection of transport resources within a Transport Domain which are capable of control by a Transport Resource Manager (
41、TRM) User Equipment WE): equipment under the control of an End-User 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: ATM BC CBR DiffServ ICF IntServ IP ITSP MPLS QoSM QoSPE RMS RSVP RTP SCN SLA TD TF TPE TRM UDP UE VBR QOS Asynchronous Transfer Mode Bear
42、er Control Constant Bit Rate Differentiated Services Interconnect Function Integrated Services Internet Protocol IP Telephony Service Provider Multi Protocol Label Switching Quality of Service Quality of Service Manager Quality of Service Policy Element Root Mean Square Resource Reservation Set-up P
43、rotocol Real-time Transport Protocol Switched Communications Network Service Level Agreement Transport Domain Transport Function Transport Policy Element Transport Resource Manager User Datagram Protocol User Equipment Variable Bit Rate ETSI 9 ETSI TS 101 329-3 V2.1.2 (2002-01) VPN Virtual Private N
44、etwork 4 Void 5 QoS architecture 5.1 TIPHON architectural planes The Generalized TIPHON Architecture is shown in figure 2 (see TS 101 3 14 2). Figure 2: Generalized TIPHON Architecture End-to-end QoS signalling and control will in general involve QoS information flows in each of the architectural pl
45、anes. The Required end-to-end QoS levels are established within the IP Telephony Application Plane between End-Users and Service Provider(s). Decisions determining QoS, specific to the application, will take place in the IP Telephony Application Plane (e.g. codec type, packetization, etc). The IP Tr
46、ansport Plane (IP Network Operators) provides a QoS service to the Application Plane (Service Providers). QoS control within the IP Transport Plane is the responsibility of the IP Network Operators. 5.1 .I IP telephony application plane Within this plane, QoS parameters specific to the application a
47、re requested, authorized, signalled, controlled and accounted. 5.1.2 IP transport plane Within this plane, general non-application specific parameters effecting QoS must be controlled and accounted to achieve the QoS requirements requested by the application. 5.1.3 Management plane Within this plane
48、 QoS management entities applicable to both application and transport planes will reside and information flows applicable to QoS management will terminate. ETSI 10 ETSI TS 101 329-3 V2.1.2 (2002-01) 5.2 Service and transport domains A TIPHON-compliant deployment will in the general case be made up o
49、f a number of separate Service and End-User Domains, each representing the domain of control of an ITSP or End-User. These domains will generally be restricted to IP Telephony Application plane functionality, e.g. gatekeepers, softswitches, call agents, etc. Similarly, a TIPHON-compliant system will, in general, also be made up of a number of separate Transport Domains. Transport Domains consist solely of transport related functionality; this includes IP routers and switches, fiiewalls, etc. Each Transport Domain may have its own QoS policies and/or differ from other doma
