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    ETSI ES 283 026-2008 Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN) Resource and Admission Control Protocol for QoS reservation i.pdf

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    ETSI ES 283 026-2008 Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN) Resource and Admission Control Protocol for QoS reservation i.pdf

    1、 ETSI ES 283 026 V2.4.1 (2008-11)ETSI Standard Telecommunications and Internet converged Services andProtocols for Advanced Networking (TISPAN);Resource and Admission Control;Protocol for QoS reservation information exchange betweenthe Service Policy Decision Function (SPDF) and theAccess-Resource a

    2、nd Admission Control Function (A-RACF)in the Resource and Protocol specificationETSI ETSI ES 283 026 V2.4.1 (2008-11) 2Reference RES/TISPAN-03130-NGN-R2 Keywords interface, stage 3 ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Sire

    3、t N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice Individual copies of the present document can be downloaded from: http:/www.etsi.org The present document may be made available in more than one electronic version or

    4、 in print. In any case of existing or perceived 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 Secretar

    5、iat. Users of the present document should 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 http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send y

    6、our comment to one of the following services: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Stan

    7、dards Institute 2008. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTM, TIPHONTM, the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETS

    8、I ETSI ES 283 026 V2.4.1 (2008-11) 3Contents Intellectual Property Rights 5g3Foreword . 5g31 Scope 6g32 References 6g32.1 Normative references . 6g32.2 Informative references 7g33 Definitions and abbreviations . 7g33.1 Definitions 7g33.2 Abbreviations . 8g34 Rq interface 8g34.1 Overview 8g34.2 Rq re

    9、ference model 9g34.3 Functional elements and capabilities 9g34.3.1 Service Policy Decision Function (SPDF) 9g34.3.2 Access-Resource Admission Control Function (A-RACF) 9g35 Resource control procedures 9g35.1 Procedures at the SPDF 11g35.1.1 Initial Reservation for a Session . 11g35.1.2 Session Modif

    10、ication 12g35.1.3 Session Termination . 13g35.1.4 Event notification 13g35.2 Procedures at the A-RACF . 14g35.2.1 Initial Reservation for a Session . 14g35.2.2 Session Modification 16g35.2.3 Session Termination . 16g35.2.4 Event Notification . 17g36 Rq protocol . 17g36.1 Protocol support . 17g36.1.1

    11、 Advertising Application Support 17g36.1.2 Transport protocol 17g36.1.3 Securing Rq messages 18g36.2 Rq messages . 18g36.2.1 AA-Request (AAR) Command . 18g36.2.2 AA-Answer (AAA) Command . 18g36.2.3 Re-Auth-Request (RAR) Command . 19g36.2.4 Re-Auth-Answer (RAA) Command . 19g36.2.5 Session-Termination

    12、-Request (STR) Command . 19g36.2.6 Session-Termination-Answer (STA) Command . 20g36.2.7 Abort-Session-Request (ASR) Command 20g36.2.8 Abort-Session-Answer (ASA) Command . 20g36.3 Experimental-Result-Code AVP values . 21g36.3.1 Experimental-Result-Code AVP values imported from TS 129 209 21g36.3.2 Ex

    13、perimental-Result-Code AVP values defined in the present document 21g36.4 AVPs 22g36.4.1 AVPs defined in the present document . 22g36.4.2 AVPs imported from TS 129 209 . 22g36.4.3 AVPs imported from TS 183 017 . 23g36.4.4 AVPs imported from ES 283 034 . 23g36.4.5 Abort-Cause AVP . 23g36.4.6 AF-Appli

    14、cation-Identifier AVP 24g36.4.7 Flow-Description AVP . 24g36.4.8 Flow-Grouping AVP. 24g36.4.9 Flow-Number AVP . 25g3ETSI ETSI ES 283 026 V2.4.1 (2008-11) 46.4.10 Flows AVP 25g36.4.11 Flow-Status AVP 25g36.4.12 Flow-Usage AVP 25g36.4.13 Specific-Action AVP 26g36.4.14 Max-Requested-Bandwidth-DL AVP .

    15、26g36.4.15 Max-Requested-Bandwidth-UL AVP . 26g36.4.16 Media-Component-Description AVP . 26g36.4.17 Media-Component-Number AVP . 27g36.4.18 Media-Sub-Component AVP 27g36.4.19 Media-Type AVP 27g36.4.20 Reservation-Class AVP 28g36.4.21 Globally-Unique-Address AVP 28g36.4.22 Address-Realm AVP. 28g36.4.

    16、23 Reservation-Priority AVP . 28g36.4.24 Session-Bundle-Id AVP 28g36.4.25 AF-Charging-Identifier AVP 29g36.4.26 Service-Class AVP . 29g36.4.27 Transport-Class AVP 29g36.4.28 Overbooking-indicator AVP . 29g36.4.29 Authorization-Package-Id AVP 29g36.4.30 Media-Authorization-Context-Id AVP . 29g3Annex

    17、A (informative): Resource reservation flow states maintained by A-RACF . 30g3Annex B (informative): Change history . 32g3History 33g3ETSI ETSI ES 283 026 V2.4.1 (2008-11) 5Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The

    18、 information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, 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 fro

    19、m the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/webapp.etsi.org/IPR/home.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 ETS

    20、I SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This ETSI Standard (ES) has been produced by ETSI Technical Committee Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN

    21、). ETSI ETSI ES 283 026 V2.4.1 (2008-11) 61 Scope The present document provides the stage 3 specification of the Rq interface. The functional requirements and the stage 2 specifications of the Rq interface are contained in ES 282 001 1 and ES 282 003 2. The Rq interface is the interface between the

    22、Service Policy Decision Function (SPDF) and the Access - Resource and Admission Control Function (A-RACF) and is used for QoS resource reservation information exchange between the SPDF and the A-RACF. Via the Rq interface the SPDF issues requests for resources in the access network, indicating IP Qo

    23、S characteristics. The A-RACF uses the IP QoS information to perform admission control and indicate to the SPDF via the Rq interface its admission control decisions. Due to the possible business roles in an access environment, the SPDF may be either in the same domain or in a different domain as the

    24、 A-RACF. The present document defines: The information to be exchanged between SPDF and A-RACF over the Rq interface. An Rq interface definition based on the Diameter protocol. In situations where no generic overload control mechanism is used on the Rq interface, the interface shall only be capable

    25、of supporting a one-to-one relationship between the A-RACF and SPDF (i.e. one SPDF may only contact one A-RACF, and that A-RACF may only contact that same SPDF). Overload control need not be supported in this situation due to the fact that it should be possible to traffic engineer the capabilities o

    26、f the two entities, so that the capacity of one entity matches the capacity of the other. 2 References References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For a specific reference, subsequent revisions do not apply. Non-specific

    27、 reference may be made only to a complete document or a part thereof and only in the following cases: - if it is accepted that it will be possible to use all future changes of the referenced document for the purposes of the referring document; - for informative references. Referenced documents which

    28、 are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. For online referenced documents, information sufficient to identify and locate the source shall be provided. Preferably, the primary source of the referenced document should be cited,

    29、in order to ensure traceability. Furthermore, the reference should, as far as possible, remain valid for the expected life of the document. The reference shall include the method of access to the referenced document and the full network address, with the same punctuation and use of upper case and lo

    30、wer case letters. NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee their long term validity. 2.1 Normative references The following referenced documents are indispensable for the application of the present document. For dated references,

    31、only the edition cited applies. For non-specific references, the latest edition of the referenced document (including any amendments) applies. 1 ETSI ES 282 001: “Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); NGN Functional Architecture Release 2“

    32、. ETSI ETSI ES 283 026 V2.4.1 (2008-11) 72 ETSI ES 282 003: “Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); Resource and Admission Control Sub-system (RACS); Functional Architecture; Release 2“. 3 ETSI ES 282 004: “Telecommunications and Internet c

    33、onverged Services and Protocols for Advanced Networking (TISPAN); NGN Functional Architecture; Network Attachment Sub-System (NASS); Release 2“. 4 ETSI ES 283 034: “Telecommunications and Internet converged Services and Protocols for Advanced Networks (TISPAN); Network Attachment Sub-System (NASS);

    34、e4 interface based on the DIAMETER protocol; Release 2“. 5 ETSI TS 183 017: “Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN);Resource and Admission Control: DIAMETER protocol for session based policy set-up information exchange between the Applicatio

    35、n Function (AF) and the Service Policy Decision Function (SPDF); Protocol specification; Release 2“. 6 ETSI TS 129 207: “Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Policy control over Go interface (3GPP TS 29.207)“. 7 ETSI TS 129 209: “U

    36、niversal Mobile Telecommunications System (UMTS); Policy control over Gq interface (3GPP TS 29.209)“. 8 ETSI TS 133 210: “Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); 3G security; Network Domain Security (NDS); IP network layer security (3

    37、GPP TS 33.210)“. 9 IETF RFC 2960: “Stream Control Transmission Protocol“. 10 IETF RCF 3309: “SCTP Checksum Change“. 11 IETF RFC 3588: “Diameter Base Protocol“. 12 IETF RFC 4005: “Diameter Network Access Server Application“. 2.2 Informative references The following referenced documents are not essent

    38、ial to the use of the present document but they assist the user with regard to a particular subject area. For non-specific references, the latest version of the referenced document (including any amendments) applies. Not applicable. 3 Definitions and abbreviations 3.1 Definitions For the purposes of

    39、 the present document, the following terms and definitions apply: Attribute-Value Pair (AVP): See RFC 3588 11, corresponds to an Information Element in a Diameter message. hard-state reservation: type of reservation whereby the requested resources are reserved without time limit NOTE: Hard-state res

    40、ervations are terminated if the DIAMETER session is terminated. soft-state reservation: type of reservation whereby the requested resources are reserved for a finite amount of time, soft-state reservations are terminated when the DIAMETER session is terminated ETSI ETSI ES 283 026 V2.4.1 (2008-11) 8

    41、3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: AAA AA-Answer AAR AA-Request AF Application Function A-RACF Access-Resource and Admission Control Function ASA Abort-Session-Answer ASP Application Service Provider ASR Abort-Session-Request ATM VC Asynchr

    42、onous Transfer Mode Virtual Circuit AVP Attribute-Value Pair BGF Border Gateway Function IANA Internet Assigned Numbers Authority IP Internete Protocol IP-CAN IP-Connectivity Access Network NASREQ Network Access Server REQuirements RAA Re-Auth-Answer RACF Resource and Admission Control Function RACS

    43、 Resource and Admission Control Subsystem RAR Re-Auth-Request RCEF Residual Code Excited Field RTCP Real-time Trasnport Control Protocol RTP Real-time Transport Protocol SDI Session Description Information SPDF Service-based Policy Decision Function STA Session-Termination-Answer STR Session-Termina

    44、tion-RequestUDP User Datagram Protocol xDSL x Digital Subscriber Line 4 Rq interface 4.1 Overview In the following, the Rq interface is described in detail concerning what type of information that needs to be transported between the SPDF and the A-RACF. The functional requirements and the stage 2 sp

    45、ecifications of the Rq interface are contained in ES 282 001 1 and ES 282 003 2. Due to the possible business roles in an access environment, an SPDF instance may be either in the same domain or in a different domain as the A-RACF instance with which it interacts. This means that Rq reference point

    46、should support both the case when an SPDF instance and the A-RACF instance with which it interacts are located in the same domain, and when they are located in different domains. The Rq reference point is an open vendor interface and an open operator interface. One A-RACF instance shall be able to s

    47、erve more than one SPDF instance and one given SPDF instance may interact with a number of A-RACF instances, although on a session basis, it shall interact with only a single A-RACF instance. ETSI ETSI ES 283 026 V2.4.1 (2008-11) 94.2 Rq reference model The Rq interface is defined between the SPDF a

    48、nd the A-RACF. Rr x - RACF AF SPDF BGF RCEF NASS Re Ia Gq Rd , Ri Rq e4 Transport Processing Functions RACS BTF Rf Figure 1: Rq interface architecture model 4.3 Functional elements and capabilities 4.3.1 Service Policy Decision Function (SPDF) The SPDF is a functional element that coordinates the re

    49、source reservations requests received from by the AF. The SPDF makes policy decisions using policy rules and forwards the session and media related information obtained from the AF to the A-RACF via the Rq reference point for admission control purposes. The functionality of the SPDF is further detailed in ES 282 003 2. 4.3.2 Access-Resource Admission Control Function (A-RACF) The A-RACF is a functional element performing resource reservation admission control and network policy assembly. The A-RACF receives resource reservation


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