1、 ETSI TR 102 422 V1.1.1 (2005-04)Technical Report Methods for Testing and Specification (MTS) IMS Network Integration Testing Infrastructure Testing Methodology ETSI ETSI TR 102 422 V1.1.1 (2005-04) 2 Reference DTR/MTS-00099 Keywords IMS, network, NIT, testing ETSI 650 Route des Lucioles F-06921 Sop
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6、estriction extend to reproduction in all media. European Telecommunications Standards Institute 2005. All rights reserved. DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTMand the TIPHON logo are Trade Marks currently being registered by ETSI
7、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. ETSI ETSI TR 102 422 V1.1.1 (2005-04) 3 Contents Intellectual Property Rights4 Foreword.4 1 Scope 5 2 References 5 3 Abbreviations .6 4 Introduction 7 4.1
8、 Purpose.7 4.2 Validity.7 4.3 IMS Architecture7 5 IMS Network Integration Testing Methodology8 5.1 Reasons for Network Integration Testing (NIT) 8 5.2 Overview of ISO 9646 12 concepts and their applicability to NIT .9 5.2.1 Requirements 9 5.2.2 PICS and PIXIT9 5.2.3 NIT profile9 5.2.4 Type of test .
9、9 5.2.5 Test method 9 5.2.6 Test notation .11 5.3 Functional tests.12 5.4 Test forms.12 5.5 Network configurations13 5.5.1 Home network for CSCF related procedures13 5.5.2 Home network for Mobility Management procedures14 5.5.3 Home and Visited network for Mobility Management procedures.15 5.5.4 Hom
10、e network for Session control procedures and Enhanced Multimedia services 15 5.5.5 Home and Visited network for Session setup and control procedures16 5.5.6 Home network for PSTN initiated session to IMS17 5.5.7 Home network for IMS initiated session to PSTN18 5.5.8 IMS originated session to PSTN fr
11、om different operator .19 5.5.9 PSTN originated session to IMS from different operator .20 5.5.10 Home network for Charging tests .20 History 22 ETSI ETSI TR 102 422 V1.1.1 (2005-04) 4 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared
12、 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: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is
13、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 investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not refe
14、renced 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 Report (TR) has been produced by ETSI Technical Committee Methods for Testing and Specification (MTS). ETSI ETSI TR 102 422 V1.1.1 (2005-0
15、4) 5 1 Scope The present document describes a testing methodology for the functional qualification of the mobile network infrastructure for the IP Multimedia Subsystem (IMS) R5. The methodology proposed is concerned to the infrastructure and not to the IMS services, hence the analysis of the Applica
16、tion Servers interfaces is beyond the scope of the present document. General charging aspects will be also considered. For a checking of the IMS CN infrastructure it is suggested to test a series of reference scenarios analysing the corresponding signal messages regarding the internal interfaces of
17、the involved nodes: IuPS, Gn, Mw, Gm, Go, Mi, Mj, Mk, Mg, Mn/Mc, Cx and Rf. Nodes and interfaces involved in each specific scenario constitute testing infrastructure. Ten configurations were shown in order to test procedures from part of Mobility management, Session setup, Session Control, Enhanced
18、Multimedia Services and Charging. The different scenarios cover single operator, multiple operator and roaming configurations. Furthermore some are intended to test PLMN-PSTN interworking. 2 References For the purposes of this Technical Report (TR), the following references apply: 1 ETSI TS 123 060
19、(V5.6.0): “Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); General Packet Radio Service (GPRS) Service description; Stage 2 (3GPP TS 23.060)“. 2 ETSI TS 123 221 (V5.7.0): “Digital cellular telecommunications system (Phase 2+); Universal Mobil
20、e Telecommunications System (UMTS); Architectural requirements (3GPP TS 23.221)“. 3 ETSI TS 123 228 (V5.9.0): “Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228)“. 4 IETF RFC 3261 “SIP: Ses
21、sion Initiation Protocol“. 5 ETSI TS 124 229 (V5.5.0): “Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); IP Multimedia Call Control Protocol based on SIP and SDP; Stage 3 (3GPP TS 24.229)“. 6 ETSI TS 129 229 (V5.7.0): “Digital cellular telecom
22、munications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Cx and Dx interfaces based on the Diameter protocol; Protocol details (3GPP TS 29.229)“. 7 ETSI TS 129 232 (V5.7.0): “Universal Mobile Telecommunications System (UMTS); Media Gateway Controller (MGC) - Media Gateway (M
23、GW) interface; Stage 3 (3GPP TS 29.232)“. 8 ETSI TS 132 225 (V5.6.0): “Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Telecommunication management; Charging management; Charging data description for the IP Multimedia Subsystem (IMS) (3GPP TS
24、 32.225)“. 9 ETSI TS 129 207 (V5.8.0): “Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Policy control over Go interface (3GPP TS 29.207)“. 10 ETSI ETR 193: “Methods for Testing and Specification (MTS); Network Integration Testing (NIT); Meth
25、odology aspects; Test Co-ordination Procedure (TCP) style guide“. 11 ETSI ETR 303: “Methods for Testing and Specification (MTS); Test Synchronization; Architectural reference; Test Synchronization Protocol 1 (TSP1) specification“. 12 ISO 9646 (all parts): “Information technology - Open Systems Inter
26、connection - Conformance testing methodology and framework“. 13 ISO/IEC 9646-3: “Information technology - Open Systems Interconnection - Conformance testing methodology and framework - Part 3: The Tree and Tabular Combined Notation (TTCN)“. ETSI ETSI TR 102 422 V1.1.1 (2005-04) 6 3 Abbreviations For
27、 the purposes of the present document, the following abbreviations apply: 3GPP Third generation Partnership Project BGCF Break-out Gateway Control Function CCF Charging Collection Function CN Core Network COPS Common Open Policy Services CS Circuit Switched CSCF Call Session Control Function DHCP Dy
28、namic Host Configuration Protocol DNS Domain Name Server GERAN GSM/EDGE Radio Access Network GGSN Gateway GPRS Support Node GPRS General Packet Radio Service GSM Global System for Mobile Communication HSS Home Subscriber Server I-CSCF Interrogating-CSCF IETF Internet Engineering Task Force IM IP Mul
29、timedia IMS IP Multimedia Subsystem IP Internet Protocol ISDN Integrated Service Digital Network MGCF Media Gateway Control Function MGW Media Gateway MTS Methods for Testing and Specification NIT Network Integration Testing P-CSCF Proxy-CSCF PDF Policy Decision Function PDP Packet Data Protocol PEP
30、 Policy Enforcement Point PICS Protocol Implementation Conformance Statement PIXIT Protocol Implementation eXtra Information for Testing PLMN Public Land Mobile Network PS Packet Switched PSTN Public Switched Telephone Network QoS Quality of Service SBLP Service-Based Local Policy S-CSCF Serving-CSC
31、F SDP Session Description Protocol SGW Signaling Gateway Function SIP Session Initiation Protocol TR Technical Report TTCN Tree Tabular Combined Notation UE User Equipment UMTS Universal Mobile Telecommunication System UT Upper Tester UTRAN UMTS Terrestrial Radio Access Network ETSI ETSI TR 102 422
32、V1.1.1 (2005-04) 7 4 Introduction 4.1 Purpose The present document is aimed at defining a Testing Methodology for the functional qualification of the mobile network infrastructure for the IP Multimedia Subsystem (IMS) R5. The purpose is to verify the procedures conformity to TS 123 228 3 following u
33、p the introduction of a the new set of signalling and network bearer related network entities. The procedures that have been considered in the present document are: - CSCF; - Mobility Management; - Session control and Session set-up; - Enhanced Multimedia Services; - QoS and Charging. The methodolog
34、y used foresees tests are carried out end-to-end, through the following phases: preparation of prerequisites - including build of specific test scenario -, execution of procedure and result verification through POs and PCOs. The different scenarios cover single operator, multiple operator and roamin
35、g configurations and some are intended to test PLMN-PSTN interworking. Nodes and interfaces involved in each specific scenario constitute testing infrastructure. 4.2 Validity The purpose of the present document is to functionally verify the IMS R5 core network architecture. IP multimedia services ar
36、e based on IETF defined session control capability using the PS domain to transport signalling and bearer traffic; they are independent of the CS domain although some network element may be common with it. For a complete checking of the IMS CN it is necessary to test a series of reference scenarios
37、analysing the corresponding signal messages regarding the internal interfaces of the involved nodes: IuPS, Gn, Mw, Gm, Go, Mi, Mj, Mk, Mg, Mn/Mc, Cx and Rf. However, there are interfaces that are not IP based used during interactions with the legacy network (i.e. GSM, PSTN, and ISDN). Their internal
38、 functions will be tested for proving the interoperability with the external IMS domain. For this reason, it is necessary to specify in each test the nodes and the interfaces involved; in other words the network configuration. The verification also envisages the production of traffic documentation.
39、The qualification of the other network elements and radio interface is beyond the scope of the present document. 4.3 IMS Architecture The IMS CN subsystem combines the growth of the Internet with the growth in mobile communications, in fact it should enable the convergence of, and access to, voice,
40、messaging, data and web-based technologies for the wireless user. ETSI ETSI TR 102 422 V1.1.1 (2005-04) 8 The IMS Architecture is basically based on the Packet Domain 1 and it has special entities devoted to interact with the external Circuit-Switched networks, as well as functional entities dedicat
41、ed to signalling and transporting users data and signalling. The figure 1 shows the IMS architecture including the Radio Access Network either GERAN or UTRAN 2. Figure 1: Architecture for IP multimedia service 5 IMS Network Integration Testing Methodology 5.1 Reasons for Network Integration Testing
42、(NIT) NIT is a testing methodology that is applicable to test and monitor the overall behaviour of complex telecommunication systems, typically based on distributed call processing and distributed architectures. In particular, the NIT approach can be conveniently applied to verify the global functio
43、ns of interconnected networks providing services based on IMS. It is clear that NIT is different from conformance testing, the latter methodology being traditionally aimed at supporting verifications on a single product (a protocol, or a stack of protocols, but in any case on a well identified singl
44、e “System Under Test“). Network operators are traditionally used to perform some “end-to-end testing“ (a type of NIT testing, as we will see) before opening telecommunication services towards destinations served by other operators. Such tests are normally carried out by network operators on a bilate
45、ral voluntary basis before opening a bilateral (symmetric) traffic relation for the commercial service. From the technical point of view, the aim is to check the behaviour of a global telecommunication network (i.e. a set of interconnected sub-networks) from the point of view of the end users (the c
46、ustomers of each operator) which are “attached“ to the borders of the network, at the user-to-network interfaces. Sometimes the “borders“ of the global network under test are not couples of user-to-network interfaces but are at two or more node-to-node interfaces. This is the case of a transit netwo
47、rk (e.g. a core SS#7 network): in this case the term “node-to-node testing“ is used (the term “point-to-point“ testing is also used sometimes by the operators, the name “point“ correctly reminding us the SS#7 terminology of “signalling points“). So the common “black box“ approach of both cases (test
48、ing for the borders) is referred to using the term “Network Integration Testing“ (NIT), which reflects the ability of different components of a “global“ network, to work with a certain level of co-ordination and integration in order to be able to offer a given set of telecommunication services at th
49、e “global borders“. ETSI ETSI TR 102 422 V1.1.1 (2005-04) 9 5.2 Overview of ISO 9646 12 concepts and their applicability to NIT 5.2.1 Requirements NIT Requirements have to be based not on a single set of reference specifications but on many, at least one for each interconnected sub-network, from which the compatibility requirements must be extracted. 5.2.2 PICS and PIXIT A Protocol Implementation Conformance Statement (PICS) for NIT can be derived from the PICS of each reference specification. A Protocol Implementation extra Information for
