ETSI TS 183 059-1-2009 Telecommunications and Internet converged Services and Protocols for Advanced Networks (TISPAN) Network Attachment Sub-System (NASS) a2 interface based on th.pdf

1、 ETSI TS 183 059-1 V2.1.1 (2009-08)Technical Specification Telecommunications and Internet converged Services and Protocols for Advanced Networks (TISPAN); Network Attachment Sub-System (NASS);a2 interface based on the DIAMETER protocol ETSI ETSI TS 183 059-1 V2.1.1 (2009-08) 2 Reference DTS/TISPAN-

2、03117-1-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 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice Indi

3、vidual 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 in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Docume

4、nt 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 be aware that the document may be subject to revision or change of status. Information on the cu

5、rrent 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 your comment to one of the following services: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reprod

6、uced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2009. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTM, TIPHONTM, the TIPHON logo and the ETSI logo are Trade Marks of ETS

7、I 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. LTE is a Trade Mark of ETSI currently being registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GS

8、M logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 183 059-1 V2.1.1 (2009-08) 3 Contents Intellectual Property Rights5 Foreword.5 1 Scope 6 2 References 6 2.1 Normative references .6 2.2 Informative references7 3 Definitions and abbreviations.7 3.1 Definitions7 3.2 Abbr

9、eviations .7 4 Overview 8 5 Procedure Descriptions.8 5.1 General .8 5.1.1 Information elements 8 5.2 Procedures on the CLF - NACF interface 9 5.2.1 Bind indication/Acknowledgement 9 5.2.1.1 Overview.9 5.2.1.2 Procedure at the NACF side10 5.2.1.3 Procedure at the CLF side .10 5.2.2 Unbind indication

10、.11 5.2.2.1 Overview.11 5.2.2.2 Procedure at the NACF side11 5.2.2.3 Procedure at the CLF side .12 5.2.3 Bind information query/acknowledgment 12 5.2.3.1 Overview.12 5.2.3.2 Procedure at the CLF side .13 5.2.3.3 Procedure at the NACF side13 6 Use of the Diameter base protocol .13 6.1 Securing Diamet

11、er Messages .13 6.2 Accounting functionality13 6.3 Use of sessions .14 6.4 Transport protocol 14 6.5 Routing considerations .14 6.6 Advertising application support .14 7 DIAMETER application.14 7.1 Commands15 7.1.1 Push-Notification-Request command .15 7.1.2 Push-Notification-Answer command15 7.1.3

12、User-Data-Request command .16 7.1.4 User-Data-Answer command16 7.2 Result-Code AVP values17 7.2.1 Success17 7.2.2 Permanent Failures .17 7.2.3 Transient Failures .17 7.3 AVPs 17 7.3.1 Logical-Access-ID AVP .18 7.3.2 Physical-Access-ID.19 7.3.3 Terminal-Type AVP .19 7.3.4 IP-Connectivity-Status19 7.3

13、.5 CNGCF-Address.19 7.3.6 SIP-Outbound-Proxy 19 7.3.7 Access-Network-Type AVP .19 7.3.8 Location-Data AVP 19 ETSI ETSI TS 183 059-1 V2.1.1 (2009-08) 4 Annex A (informative): Mapping of a2 operations and terminology to Diameter .20 Annex B (informative): Bibliography.21 History 22 ETSI ETSI TS 183 05

14、9-1 V2.1.1 (2009-08) 5 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-members, and can be found in ETSI SR 000 314:

15、 “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/home.asp). Pursuant to the ETSI IPR Policy, no

16、 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 the present document. Foreword This Technical

17、Specification (TS) has been produced by ETSI Technical Committee Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN). ETSI ETSI TS 183 059-1 V2.1.1 (2009-08) 6 1 Scope The present document is applicable to the a2 interface between the Connectivity Sessio

18、n Location and Repository Function (CLF) and the Network Access Configuration Function (NACF). Whenever it is possible the present document specifies the requirements for this protocol by reference to specifications produced by the IETF within the scope of Diameter. Where this is not possible, exten

19、sions to Diameter are defined within the present document. 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 reference may be made only to

20、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 are not found to be publicly a

21、vailable in the expected location might be found at http:/docbox.etsi.org/Reference. 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

22、for the application of the present document. For dated references, only the edition cited applies. For non-specific references, the latest edition of the referenced document (including any amendments) applies. 1 ETSI ES 282 004 (V2.y.z): “Telecommunications and Internet converged Services and Protoc

23、ols for Advanced Networking (TISPAN); NGN Functional Architecture; Network Attachment Sub-System (NASS)“. NOTE: The latest version in the V2.y.z series applies. 2 ETSI ES 282 003 (V2.y.z): “Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); Resource an

24、d Admission Control Sub-System (RACS): Functional Architecture“. NOTE: The latest version in the V2.y.z series applies. 3 ETSI TS 129 229: “Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Cx and Dx interfaces based on the Diameter protoc

25、ol; Protocol details (3GPP TS 29.229)“. 4 ETSI TS 129 329: “Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Sh interface based on the Diameter protocol; Protocol details (3GPP TS 29.329)“. 5 IETF RFC 2960: “Stream Control Transmission Pr

26、otocol“. 6 IETF RFC 3588: “Diameter Base Protocol“. ETSI ETSI TS 183 059-1 V2.1.1 (2009-08) 7 7 IETF RFC 3309: “Stream Control Transmission Protocol (SCTP) Checksum Change“. 8 draft-ietf-geopriv-radius-lo-24 (January 2008): “Carrying Location Objects in RADIUS and Diameter“. 9 ETSI ES 283 034 (V2.y.

27、z): “Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); Network Attachment Sub-System (NASS); e4 interface based on the DIAMETER protocol“. NOTE: The latest version in the V2.y.z series applies. 10 ETSI ES 283 035 (V2.y.z): Telecommunications and Inter

28、net Converged Services and Protocols for Advanced Networks (TISPAN); Network Attachment Sub-System (NASS); e2 interface based on the DIAMETER protocol“. NOTE: The latest version in the V2.y.z series applies. 11 DSL Forum TR-069 (May 2004): “CPE WAN Management Protocol“. 12 IETF RFC 3986: “Uniform Re

29、source Identifier (URI): Generic Syntax“. 2.2 Informative references The following referenced documents are not essential 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 (

30、including any amendments) applies. i.1 IETF RFC 3554: “On the use of Stream Control Transmission Protocol (SCTP) with IPSec“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: access record: set of information stored

31、in the CLF in relation to an IP address Application Function (AF): element of the network architecture offering - or providing access to - applications that require information about the characteristics of the IP-connectivity session used to access such applications attribute-value pair: corresponds

32、 to an Information Element in a Diameter message NOTE: See RFC 3588 13. nASS user: See definition in 1. 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: ABNF Augmented Backus-Naur Form AF Application Function A-RACF Access RACF AVP Attribute-Value Pair C

33、LF Connectivity session Location and repository Function CSCF Call Session Control Function FQDN Fully Qualified Domain Name IANA Internet Assigned Numbers Authority IETF Internet Engineering Task Force IPSec IP Security ETSI ETSI TS 183 059-1 V2.1.1 (2009-08) 8 NACF Network Access Configuration Fun

34、ction NASS Network Attachment SubSystem PNA Push-Notification-Answer PNR Push-Notification-Request RACF Resource and Admission Control Function RACS Resource and Admission Control Subsystem RFC Request For Comments SCTP Stream Control Transport Protocol UCS Universal Character Set UDA User-Data-Answ

35、er UDR User-Data-Request 4 Overview The Network Attachment SubSystem (NASS), defined in ES 282 004 1, maintains information about IP-connectivity associated with NASS User connected to TISPAN networks. The a2 reference point allows the NACF to register in the CLF the association between the IP addre

36、ss allocated to a NASS User and information identifying the network access to which this equipment is connected. The following information flows are used on the a2 interface: Bind Indication. Bind Acknowledgment. Unbind Indication. Bind information query. Bind information query acknowledgement. The

37、present document specifies the protocol for the a2 Diameter interface. UETE CNGARF AMFCNGCF NACF UAAF PDBFCLFService controlsubsystems andapplicationsResourceAdmission ControlSubsysteme3e1 e1a1 a3a2 a4e4e2e2e2e5Figure 4.1: a2 interface Scope of the present document ETSI ETSI TS 183 059-1 V2.1.1 (200

38、9-08) 9 5 Procedure Descriptions 5.1 General 5.1.1 Information elements The following clauses describe the realization of the functional procedures defined in the NASS 1 and RACS specifications 2 using Diameter commands described in clause 7. This involves describing a mapping between the informatio

39、n elements defined in the NASS specification 1 and Diameter AVPs. In the tables that describe this mapping, each Information Element is marked as (M) Mandatory, (C) Conditional or (O) Optional: - A mandatory Information Element (marked as (M) in the table) shall always be present in the command. If

40、this Information Element is absent, an application error occurs at the receiver and an answer message shall be sent back to the originator of the request with the Result-Code set to DIAMETER_MISSING_AVP. This message shall also include a Failed-AVP AVP containing the missing Information Element i.e.

41、 the corresponding Diameter AVP defined by the AVP Code and the other fields set as expected for this Information Element. - A conditional Information Element (marked as (C) in the table) shall be present in the command if certain conditions are fulfilled: - If the receiver detects that those condit

42、ions are fulfilled and the Information Element is absent, an application error occurs and an answer message shall be sent back to the originator of the request with the Result-Code set to DIAMETER_MISSING_AVP. This message shall also include a Failed-AVP AVP containing the missing Information Elemen

43、t i.e. the corresponding Diameter AVP defined by the AVP Code and the other fields set as expected for this Information Element. If multiple Information Elements are missing, all corresponding AVP codes shall be included in the Failed-AVP AVP. If those conditions are not fulfilled, the Information E

44、lement shall be absent. If however this Information Element appears in the message, it shall not cause an application error and it may be ignored by the receiver if this is not explicitly defined as an error case. Otherwise, an application error occurs at the receiver and an answer message with the

45、Result-Code set to DIAMETER_AVP_NOT_ALLOWED shall be sent back to the originator of the request. A Failed-AVP AVP containing a copy of the corresponding Diameter AVP shall be included in this message. - An optional Information Element (marked as (O) in the table) may be present or absent in the comm

46、and, at the discretion of the application at the sending entity. Absence or presence of this Information Element shall not cause an application error and may be ignored by the receiver. 5.2 Procedures on the CLF - NACF interface 5.2.1 Bind indication/Acknowledgement 5.2.1.1 Overview This procedure i

47、s used to report the binding between the IP address allocated to a user equipment and identity of the access to which this equipment is connected from the NACF to the CLF. This information flow occurs when an IP address has been allocated to a user equipment. The NACF should trigger this procedure a

48、s soon as an IP address has been allocated. This procedure is mapped to the commands Push-Notification-Request/Answer in the Diameter application specified in clause 7. Tables 5.1 and 5.2 detail the involved information elements as defined in the NASS specification ES 282 004 1 and their mapping to

49、Diameter AVPs. ETSI ETSI TS 183 059-1 V2.1.1 (2009-08) 10Table 5.1: Bind indication (NACF - CLF) Information element name Mapping to Diameter AVP Cat. Description Globally Unique IP Address Globally-Unique-Address M This information element contains: - The IP address of the NASS User. - The addressing domain in which the IP address is significant. Logical Access ID Logical-Access-Id M The identity of the logical access to which the user equipment is connected. Physical Access ID Physical-Access-Id O The identity of the phy