1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T Q.3932.2 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (06/2015) SERIES Q: SWITCHING AND SIGNALLING Testing specifications Testing specifications for next generation networks IMS/NGN performance benchmark Part 2: Subsyste
2、m configurations and benchmarks Recommendation ITU-T Q.3932.2 ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE Q.1Q.3 INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING Q.4Q.59 FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN Q.60Q.99 CLA
3、USES APPLICABLE TO ITU-T STANDARD SYSTEMS Q.100Q.119 SPECIFICATIONS OF SIGNALLING SYSTEMS No. 4, 5, 6, R1 AND R2 Q.120Q.499 DIGITAL EXCHANGES Q.500Q.599 INTERWORKING OF SIGNALLING SYSTEMS Q.600Q.699 SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 Q.700Q.799 Q3 INTERFACE Q.800Q.849 DIGITAL SUBSCRIBER SIGNA
4、LLING SYSTEM No. 1 Q.850Q.999 PUBLIC LAND MOBILE NETWORK Q.1000Q.1099 INTERWORKING WITH SATELLITE MOBILE SYSTEMS Q.1100Q.1199 INTELLIGENT NETWORK Q.1200Q.1699 SIGNALLING REQUIREMENTS AND PROTOCOLS FOR IMT-2000 Q.1700Q.1799 SPECIFICATIONS OF SIGNALLING RELATED TO BEARER INDEPENDENT CALL CONTROL (BICC
5、) Q.1900Q.1999 BROADBAND ISDN Q.2000Q.2999 SIGNALLING REQUIREMENTS AND PROTOCOLS FOR THE NGN Q.3000Q.3899 TESTING SPECIFICATIONS Q.3900Q.4099 Testing specifications for next generation networks Q.3900Q.3999 Testing specifications for SIP-IMS Q.4000Q.4039 Testing specifications for Cloud computing Q.
6、4040Q.4059 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T Q.3932.2 (06/2015) i Recommendation ITU-T Q.3932.2 IMS/NGN performance benchmark Part 2: Subsystem configurations and benchmarks Summary Recommendation ITU-T Q.3932.2 provides the second part of a multi-par
7、t deliverable covering the IP multimedia subsystem (IMS)/next generation networks (NGN) performance benchmark, as identified below: Part 1: Core concepts; Part 2: Subsystem configurations and benchmarks; Part 3: Traffic sets and traffic profiles; Part 4: Reference load network quality parameters. Th
8、is Recommendation contains the specific benchmarking use cases and scenarios, along with scenario-specific metrics and design objectives (DOs). It also defines the system under test (SUT) configuration parameters. The present document also contains any required extensions to the overall descriptions
9、 present in the present document, if necessary for the specific scenario. Part 3 defines an initial benchmark test through the specification of a traffic set, traffic-time profile and benchmark test procedure. Part 4 defines reference load network quality parameters for the use cases defined in Reco
10、mmendation ITU-T Q.3932.2. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T Q.3932.2 2015-06-13 11 11.1002/1000/12497 _ * To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommendations unique ID. For
11、example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T Q.3932.2 (06/2015) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Sta
12、ndardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA),
13、which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall withi
14、n ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommend
15、ation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as
16、 “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTSITU draws attention to the possibility that the practice or implementation of this Recommendatio
17、n may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of
18、 this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent
19、database at http:/www.itu.int/ITU-T/ipr/. ITU 2016 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T Q.3932.2 (06/2015) iii Table of Contents Page 1 Scope . 1 2 References . 1 3 Definitions 2 3.1 Terms
20、 defined elsewhere 2 3.2 Terms defined in this Recommendation . 2 4 Abbreviations and acronyms: . 2 5 Conventions 3 6 System under test (SUT) subsystems . 4 6.1 IMS/multimedia telephony (MMtel) 4 6.2 IMS/IMS-based PSTN/ISDN emulation sub-system (PES) . 7 6.3 IMS to IMS/PES . 7 6.4 IMS/LTE basic conf
21、iguration . 7 6.5 VoLTE 8 7 Use cases . 9 7.1 IMS . 9 8 Session set-up/tear-down scenarios 12 8.1 MMTel fixed access to MMTel fixed access . 13 8.2 IMS/PES to IMS/PES . 19 8.3 MMTel fixed access IMS/PES 19 8.4 VoLTE to IMS/PES 45 8.5 VoLTE to VoLTE use case 12 . 60 8.6 MMTel fixed access VoLTE . 64
22、9 Metrics and design objectives (DOs) 72 9.1 Delay probability 72 9.2 Speech quality analysis . 86 9.3 Call profiler traffic patterns 86 Appendix I Call flows . 89 Appendix II Load profiles examples . 97 Appendix III Examples for test reports . 98 III.1 Example of a call detail report 98 III.2 Examp
23、le of a call summary report 98 III.3 Example of a voice summary report . 98 III.4 Example of a voice quality detail report . 99 Rec. ITU-T Q.3932.2 (06/2015) 1 Recommendation ITU-T Q.3932.2 IMS/NGN performance benchmark Part 2: Subsystem configurations and benchmarks 1 Scope This Recommendation prov
24、ides the second part of a multi-part deliverable covering the IMS/NGN performance benchmark, as identified below: Part 1: Core concepts; Part 2: Subsystem configurations and benchmarks; Part 3: Traffic sets and traffic profiles; Part 4: Reference load network quality parameters. This Recommendation
25、contains the specific benchmarking use cases and scenarios, along with scenario-specific metrics and (DOs). It also defines the SUT configuration parameters. The present document also contains any required extensions to the overall descriptions present in the present document, if necessary for the s
26、pecific scenario. Part 3 defines an initial benchmark test through the specification of a traffic set, traffic-time profile and benchmark test procedure. Part 4 defines reference load network quality parameters for the use cases defined in ITU-T Q.3932.2. 2 References The following ITU-T Recommendat
27、ions and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefor
28、e encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-al
29、one document, the status of a Recommendation. ITU-T P.862.1 Recommendation ITU-T P.862.1 (2003), Mapping function for transforming P.862 raw result scores to MOS-LQO. ITU-T P.863 Recommendation ITU-T P.863 (2014), Perceptual objective listening quality assessment. ITU-T Q.543 Recommendation ITU-T Q.
30、543 (1993), Digital exchange performance design objectives. ITU-T Q.3930 Recommendation ITU-T Q.3930 (2012), Performance testing of distributed systems Concepts and terminology. ITU-T Q.3931.2 Recommendation ITU-T Q.3931.2 (2011), Performance benchmark for the PSTN/ISDN emulation subsystem of an IP
31、multimedia system Part 2: Subsystem configurations and benchmarks. ITU-T Q.3932.3 Recommendation ITU-T Q.3932.3 (2015), IMS/NGN performance benchmark Part 3: Traffic sets and traffic profiles. ITU-T T.38 Recommendation ITU-T T.38 (1998), Procedures for real-time Group 3 facsimile communication over
32、IP networks. 2 Rec. ITU-T Q.3932.2 (06/2015) ITU-T V.34 Recommendation ITU-T V.34 (1998), A modem operating at data signalling rates of up to 33 600 bit/s for use on the general switched telephone network and on leased point-to-point 2-wire telephone-type circuits. ITU-T V.152 Recommendation ITU-T V
33、.152 (2010), Procedures for supporting voice-band data over IP networks. ETSI TR 121 905 ETSI TR 121 905 V10.3.0 (2011), Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Vocabulary for 3GPP Specifications (3GPP TR 21.905). ETSI TS 123 002
34、 ETSI TS 123 002 V11.6.0 (2013), Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Network architecture (3GPP TS 23.002 version 11.6.0 Release 11). ETSI TS 124 229 ETSI TS 124 229 (2009), Digital cellular telecommunications system (Phase 2
35、+); Universal Mobile Telecommunications System (UMTS); LTE; Internet Protocol (IP) multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3 (3GPP TS 24.229 version 8.7.0 Release 8). ETSI TS 183 036 ETSI TS 183 036 V2.1.1 (2009), Tele
36、communications and Internet converged Services and Protocols for Advanced Networking (TISPAN); ISDN/SIP interworking; Protocol specification. ETSI TS 183 043 ETSI TS 183 043 V1.1.1 (2006), Telecommunications and Internet Converged Services and Protocols for Advanced Networks (TISPAN); IMS-based PSTN
37、/ISDN Emulation Stage 3 specification. IETF RFC 3840 IETF RFC 3840 (2004), Indicating User Agent Capabilities in the Session Initiation Protocol (SIP). 3 Definitions 3.1 Terms defined elsewhere The IMS benchmarking definitions are described in ITU-T Q.3930. 3.2 Terms defined in this Recommendation N
38、one. 4 Abbreviations and acronyms: For the purposes of this Recommendation, the abbreviations and acronyms for LTE given in ETSI TR 121 905 and the following apply: AKA Authentication and Key Agreement BGCF Border Gateway Control Function CSCF Call Session Control Function DTLS Datagram Transport La
39、yer Security DO Design Objective GW Gateway HSS Home Subscriber Server FM Fault Management Rec. ITU-T Q.3932.2 (06/2015) 3 IBCF Interconnection Border Control Function I-CSCF Interrogating-CSCF IM IP Multimedia IMS IP Multimedia Subsystem ISDN Integrated Services Digital Network IP Internet Protocol
40、 IPsec Internet Protocol Security ISC IP multimedia Service Control LCS Location Services LRF Location Retrieval Function MCS Modulation and Coding Scheme MGC Media Gateway Controller MME Mobile Management Entity MMTel Multimedia Telephony MRB Media Resource Broker MRF Media Resource Function MRFC M
41、edia Resource Function Controller NGN Next Generation Networks P-CSCF Proxy-CSCF PES IMS-based PSTN/ISDN Emulation Sub-system PSTN Public Switched Telecommunications Network QoS Quality of Service RTP Real-Time Protocol SA Security Association SBC Session Border Control SCS Session Control Subsystem
42、 S-CSCF Serving CSCF SLF Subscriber Location Function SUT System Under Test TLS Transport Layer Security TS Test System UDUB User Determined User Busy UE User Equipment 5 Conventions None. 4 Rec. ITU-T Q.3932.2 (06/2015) 6 System under test (SUT) subsystems 6.1 IMS/multimedia telephony (MMtel) An IM
43、S/NGN benchmark is required to allow not only a complete IMS network but also subsystems of a network corresponding to discrete products that may be available from a supplier. To address this requirement in this multi-part deliverable, a series of subsystems are defined, which will serve as a SUT fo
44、r a benchmark test. IMS/NGN elements that do not appear in a subsystem are regarded as part of the test environment, which is present for a subsystem to function, but which is not itself subject to benchmarking. Figure 1 depicts the IMS reference architecture. The components of the architecture are
45、the primary building blocks, which are either defined by the IMS standard, or defined by external standards and referenced by IMS. The links between the primary building blocks represent reference points over which the building blocks communicate with each other. The reference architecture is a logi
46、cal architecture; no mapping of functional elements to hardware or software component is mandated. Figure 1 Overview of IMS functional entities ETSI TS 123 002 For the purposes of benchmarking, however, certain rules concerning subsystem configurations are required. These rules that benchmark measur
47、ements taken from equivalent subsystems of different vendors are comparable with one another. The general guidelines for defining a SUT configuration are: All of the functional elements of the subsystem shall be present in the SUT configuration; All hardware elements used in the implementation of th
48、e SUT configuration shall be completely enumerated; Rec. ITU-T Q.3932.2 (06/2015) 5 All the quality of service (QoS) spec measurements defined at the interfaces to the SUT shall be collected as specified in the benchmark test. All hardware-specific measurements (e.g., CPU utilization, memory utiliza
49、tion, fabric bandwidth) specified in the benchmark test should be collected for all hardware elements used in the implementation of the SUT configuration; SUT interface characteristics shall be specified so that they can be emulated by the test system (TS), including: Security (e.g., Internet protocol security (IPsec), transport layer security (TLS), datagram transport layer security (DTLS), etc.); Interface network characteristics (e.g., up and down bandwid
