1DOCUMENT #:GSC13-GTSC6-02r2FOR:PresentationSOURCE:ETSIAGENDA ITEM:4.1CONTACT(S):Report on ETSI activities: 1) NGN in ETSI 2) Interconnection of ServicesPresenter: Ian SpiersSubmission Date: July 13, 2008
2NGN in TISPAN Common IMS in 3GPP 1) NGN in ETSINGN in TISPAN Common IMS in 3GPPSource: Rainer Muench, TISPAN Chairman
31) TISPAN is … the home of NGN standards TISPAN is the ETSI body thatspecifies standards for Fixed networks and internet convergencedeveloped the Convergence work Item (FMC)specifies the Next Generation of NetworksMany of the participating organisations have their HQs from outside of EuropeTISPAN NGN specifications are referenced by the ITU-TCommon IMS parts of the TISPAN work are considered in 3GPP specifications as published by ETSI or other OPsOpen area:TISPAN NGN specifications can be considered as THE global NGN solution
4TISPAN is today An important standards group (and a great one) … Typically up to 160 participants per meetingInternational participation (Europe, Asia, Americas)Up to +800 documents to treat in 7 WGs during one week4 plenaries, 4-6 WG meetings, 4-8 ad hocs per yearTISPANIS GOOD
5TISPAN Organisation 7 Working Groups Requirements and Architecture ProtocolsNumbering, Naming, Addressing, RouteingHome NetworksTesting and ValidationSecurityNetwork ManagementHierarchical system for organising and managing the workOversee activity per topicCollocated Technical Committee Plenaries and full WG meetings (4 times a year)Interim meetings as required and agreed (face-to-face or virtual)Close co-operation with other SDOs, ITU-T, 3GPP, corporate networks (e.g. Ecma), many fora and groups
6ETSI NGN Status Release 1 ………….. Status Complete Release 2 ………….. Nearing completionRelease 3…………… Requirement capture and early work progressingTransfer of Work Items for Common IMSAll Common IMS related WIs have been transferred to 3GPP, TISPAN monitor progress carefully and take appropriate action if specific problems are identified.
7Some key work areas in NGN R2 Resource control (RACS)Network attachment subsystem (NASS)Supplementary servicesPSTN/ISDN Emulation (PES)IPTVTS on IMS IPTV Stage 3 Core network aspects has been published.TS on IPTV dedicated system Stage 3 has been approved at TISPAN#18 Plenary (03 – 04 July 2008).Numbering, naming, addressing, routeingHome networks and devicesCorporate networks and business communication2
8ETSI TISPAN NGN Release 3 Early requirements for the next TISPAN Release includeVoIP Consolidation (including QoS, security, interworking)IPTV Service evolution (blended services and beyond)Consolidation of the work on business communicationUltra Broadband (fixed and wireless) access to the NGNWork progressing on Non-3GPP access systemsImprovements to Release 2, e.g. resource controlInterconnection (NGN, NGCN)Network Harmonisation - increase interoperability with other NGNs and other networks (non IMS).
9Numbering, Naming and Addressing TISPAN WG4 have investigated the need to introduce a Naming Address Resolution (NAR) framework into TISPAN NGN conformant communication networksThe following approach was adopted:Investigation of ‘use cases in the NGN environment’ to determine required NAR functionsGap Analysis of current TISPAN NGNs specifications - comparing them to existing/emerging solutions of NAR methods.Identification of items requiring further standardization based on the above analysisAnalysis of the consequences of creating a Naming Address Resolution framework.
10NGN InterconnectionTISPAN is currently working on ENUM & DNS Guidelines that will enable TISPAN to evaluate their requirements against what is set out within the GSMA documents IR34 and IR37.That exercise will provide a firm basis for TISPAN examine their requirements for an Inter-operator IP backbone network and discuss the possibility of a common approach with the GSMA, or alternatively conclude why this isn't the case.ETSI to:Complete work on ENUM & DNS Guidelines, NGN evolution for interconnection, inter-domain and access reference points, numbering, naming, addressing, routeing and Naming Address Resolution functionalityIdentify any critical outstanding issues and propose a way forward, e.g. the need to develop further commercial and administrative arrangements required to facilitate the realisation of an IPX responding to TISPAN requirementsCompare detailed requirements and guidelines against other planned approaches e.g. GSMAConsider the likelihood of achieving a viable large scale global approach for common IMS providersETSI is supporting the view that all required parties need to move forward in a coordinated manner.ETSI is supporting collaboration with 3GPP, GSMA, SDOs, ITU-T.
11TISPAN NGN R2 security NGN Security requirements (TS 187 001) Defines also security requirements for IPTV, Business Communication, Media Security, Home Networking, and for countering UCNGN eTVRA (TR )Threat and risk analyses for specific NGN use cases such as NAT traversal, RACS, Media Security, and Unsolicited Communication;NGN Security architecture (TS )Defining the security architecture for IPTV, Home Networking, FMC, Media Security, H.248, Corporate NetworksGeneralised NAT traversal feasibility study (TR )Media security (TR )Impact of unsolicited communication in the NGN (TR )NGN Lawful Interception functional entities, information flow and reference points (TS )Data retention and its impact on the NGN (TR )Customer Premises Networking (CPN)
12Early TISPAN NGN R3 security: Feasibility study on IPTV security architectureStudy models and key management systems for service protectionaim to develop the model for the NGN.Study of functional entities and mechanisms for service protection with theaim to define these for the NGN.Study of a framework open to the integration of content protection solutions.Feasibility study of security mechanisms for customer premises networks connected to TISPAN NGN.
13Topics for future security work IPTV security (enhancement of stage 2, definition of stage 3)Adding Prevention of Unsolicited Communication as a feature (stage 1, stage 2, stage 3)Identity protection, authentication and integrity countermeasures and to define credential managementMedia security provisioning (stage 1, stage2)Additional work on NAT-T (e.g. interaction with RACS, interaction with IPTV, security analysis of use of STUN)Enhanced security for NASS, RACSSecurity for CNG/CND (stage 1, stage 2, stage 3)Implications for AGCF securitySecurity for NGCNFMC (taking into account requirements of the FMCA)Diameter and Radius AVP profilingApplication layer security on the NGN (e.g. TELCO 2.0)Analyse the inter-relation between security features and architecture of the NGN (IPTV, NAT-T, NASS, RACS etc.) in terms of how to employ consistent security architecture and mechanismsDevelop general rules, patterns, and templates to ease the employment of the NGN in practice and to facilitate risk controlCNG/CND -> HomegatewayTelco 2.0™ is a collection of research, brainstorming and consulting services designed to catalyse change in the Telco-Media-Technology value chain:Telco 2.0™ Research & AnalysisTelco 2.0™ Executive BrainstormsTelco 2.0™ ConsultingThe Initiative stimulates new ways of thinking about Business Models, Service Portfolios and Technical Architectures, ultimately looking to answer the question: "How do we make money in an increasingly IP-based world".Created by boutique analyst and consulting scompany, STL Partners, the Telco 2.0™ Initiative was launched in May 2006 and is supported by the GSM Association, among other organizations around the world. It runs one of the most widely read blogs in the sector.
14Network Management NGN Management Resource Management (IMS Management imported from 3GPP)Subscription Management (SuM)IPTV Management“JointSuM”collaboration between ETSI TISPAN WG8, 3GPP SA5, and TM Forum TIP, working on alignment of the Subscription Management and Service Activation specifications in these bodies. Recently, also ITU-T SG 4 has indicated their interest in this work.CollaborationTM Forum and other de facto bodies are important players in the global telecom management standards arena. Their work is being taken into account in TISPAN WG8.
15Testing ActivitiesProduction of manual and automatic test suites to ensure the conformance to TISPAN, 3GPP and ITU standardised protocols.These tests ensurethe global interoperability for and between ISDN and TISPAN NGN Releases incl. PSTN/ISDN Emulation Subsystem,QoS between networks,performance benchmarking for NGNCo-operation with3GPPITU (SG 11, SG 12)
16Next Steps (in Standards) As NGN networks are being rolled out and tested, TISPAN is seeing a large increase in the number of corrections (CRs) to NGN-R1 and R2. This is a good sign.TISPAN (and ETSI) recognises the importance of cooperation agreements and is identifying key bodies and works together to avoid duplication of effort.TISPAN’s members are now focused on Rel-2 completion and progressing new work areas for Rel-3.Push ahead with e.g. the Interconnection work, IPTV, home networks, next generation corporate networks, next generation access technologies.
17Other PSOs/Challenges Noted that the work on NGN protocols in ITU-T SG 11 is progressing well.It is noted that caution should be taken to ensure that work is not duplicated in PSOs. In general, cooperation with other PSOs is working well.As new features and services are introduced using NGNs, more and more divers players are active on the playing field (e.g. NGN IPTV-Content suppliers-broadcaster etc). This has to be coordinated!
18NGN Interconnection of Services ETSI Board Strategic Topic Source:Fernando SorianoClaudio Gentile
19IntroductionWithin the topic of “Service level Interconnection of NGN Services” ETSI:Intends to give a step forward and to highlight the importance of interconnection at the service level for Next Generation NetworkShows its determination to take the required steps to lead the creation of the interconnection standardand wiliness to bring all parties together to collaborate in its realizationETSI identified three main areas of work:Need of Global Standard that covers IP interconnection of NGN services.Avoiding divergent implementationsAnd assuring the global interconnection of NGNNGN Interconnection of Services was approved as a strategic topic for 2008 by the General Assembly in November 2007
20RationaleETSI goal is the re-assure the elaboration of a global Standard for Interconnection of NGN Services.Today interconnection of IP is optimized for Internet.Interconnection of NGN services must take in consideration Telco requirements:QoS across the whole chainPayments, according to principles of initiating party pays (or others), premium numbers,…Reduce complexity of interconnection among operators (and, potentially, thousands of players) to achievable targetsAnd this Interconnection has to be achieved at a global scaleInterconnection of NGN affects to a multiple players and organizations, and differences in their approaches may lead to duplication and divergenceOut of Scope: Commercial relation itself across the chain of IMS
21GAP AnalysisHow identified requirements (business oriented) fit with current standardization work on interconnection?Are well covered all aspects?Are there overlapping among the work in technical organizations?Initial study done by TE and TITaking as reference the IPX model developed in the GSMAAnd the work under progress in 3GPP and ETSI TISPANAnalyzing aspects related to:Architectural models, network interfaces,…QoS values defined across the IP chain (access, carrier, peering point, codecs,..), including KPI measurement,Security: Define and manage different security levels and profilesConsideration the intermediate figure of the carrier/hubCDR specification and production within the technical infrastructure for settlements among participantsTesting to certify interconnection.Etc.Shows that technical work may need to be reviewed, prioritized and better synchronized.
22GAP Analysis: Requirements GSMA IPX Requirements3GPP Rel-83GPP Rel-9Inter-Service Provider IP Backbone RequirementsAddressing and routingQoS, Authentication and Authorization, AccountingService AwarenessNNI interface enabling direct service interconnection.In Rel-8 no requirements for an IP backbone have been defined.Specification of intermediate backbone must be consideredSecurity:Public Internet, Integrity.Tunnelling, Traffic splitting (UE/SERVER)Requirements not defined in SA1. Network domain security is defined by SA3 (TS )Should be defined in Rel9Charging SpecificationRequirement specified in SA1. Offline charging specified in SA5.Should be enhanced in Rel9Addressing and RoutingRequirements partially defined in SA1Requirement partially specified in SA1Should be enhanced in Rel9 new scenarios.Transcoding and Media Protocol ConversionRequirement specified in SA1Should be adopted in Rel-9 new scenarios.22
23GAP Analysis: Architectures GSMA3GPPTISPANDirect or Indirect Interconnection (Service/Transport Level)Direct Connection (Rel8) (between CS, IMS cores, not ISP/ASPs)Rel 9 (SA1 starting TR) will cover also indirect interconnection scenarios.Service Interconnection SoIX architecture and use case scenarios defined for both direct and indirect interconnection. Note that IMS Direct Interconnection was tasked to 3GPP (“II-NNI”)Proposal of a TISPAN IPX.E2E QoS is a must in IPX. Use of Internet discouraged.E2E QoS relies simply on overprovisioning and marking of User Plane IP packets (using DiffServ).Both Internet and e2e QoS based models (inter-RACS signaling is under definition)TISPAN IPX includes carrier grade service interconnectionMainly targeted to GPRS or I-WLAN roaming and interworking of data services.Direct Interconnection for both IP services or legacy PSTN/PLMN multimedia serv.Interconnection for IP services or legacy PSTN/PLMN.Numerous requirements over IPX Proxy.No technical definition for IPX proxyNo technical definition for IPX proxy.Some requirements over operator Border Nodes (screening, firewall, GRE tunnels)Border Nodes: IBCF + TrGW not fully defined.No Ix interface defined. No firewall/QoS control. No GRE support.Border Nodes: IBCF + RACS + IBGF highly defined.Gq’ interface: QoS/NAT/Firewall control.No support for GRE tunnels.Interconnection Interfaces (NNI): Radius, MMS, IMS…IMS-NNI (Ici/Izi) under specification SIP-I NNI only starting.NNI Definition ongoing (TR only): either IMS, SIP-I or BICC/IP
24NGN Interconnection Workshop 9 June 2008 - Discussion Importance of IP interconnection growing at all levelsNGN operators, International Carriers, etc.RegulatorsVendorsPresentations from the various organizations provided snapshots of activitiesGSMA IPX model presented as major piece of requirementsIPI Alliance and i3 Forum recently established may provide additional requirements3GPP Rel 8 to coverIMS to IMS NNI for direct interconnectionCS to CS based on SIP-IMore complex scenario’s including eg use of IPX service/network to be addressed in rel 9Discussion on the need to look at interconnection of IMS to generic (basic) SIPRoaming support presentation from NTT DoCoMo. More activity to be done as it is expected to influence the evolution of interconnectionPresentation from TE and TI provided initial review of the gaps between the GSMA business requirements/models and the standardsInteroperability testing (eg in ETSI INT) will have increasing importance once the standards are finalized
25NGN Interconnection Workshop 9 June 2008 - Output Leverage TISPAN experience in this area to cover NGN requirements, not losing the expertise of this and other organizationsNeed to be aware of developments also in other organizations including ITU and the regional SDOs partners of 3GPP and share ETSI findings also in GSCIt is proposed to develop a high level roadmap showing the programs of each organization and the critical relationships over time. This should possibly present the timescale relevant to the major requirementsWhat is the next step? Focus down on a specific case, on a service level NNI, which is critical to be put in place, to be standardized, and discuss that in detail as a next stepIt was proposed to establish a mailing list to progress the discussionDo not lose the momentum, don’t stop ongoing activities while looking at future improvementIt was supported the importance of seeking a coherent and coordinated set of standards with global value
26What nextEstablish the foundations for interconnection of the new generation of IMS services beyond frontiersTechnical standard for NGN interconnection of services must be timely available for NGN, coordinated with Common IMS, and IMS services that will be standardize by 3GPP, SDOs, OMA and other organizationsNext work requires to continue in the coordinated way initiated in Workshop:Technical bodies will continue contribution driven from their participants according with their normal proceduresSynchronization through liaisons may have to be reinforce by mixed working groups, follow up sessions or whatever may be decided2626
29Requirements Catalogue WI Level 3 An Example of the Hierarchical System for Organising and Managing the WorkIPv6 TestingLevel 1IPv6 MobilityWI Level 2IPv6 CoreWI Level 2IPv6 SecurityWI Level 2IPv6 to IPv4WI Level 2ConformanceWI Level 3InteroperabilityWI Level 3Requirements Catalogue WI Level 3Test SuiteWI Level 4TSS & TPWI Level 4Core CatalogueDeliverableCore TTCN-3 ATSDeliverableCore TSS & TPDeliverable
30NGN Feasibility Studies Feed into TISPAN Core Security Documents: Each feasibility study is TVRA based, applying the methods of STF329 to requirements engineering
31List of TISPAN Rel-2 deliverables (1/8) Rel-2 Overall Description:Release 2 definitionService and Capability RequirementsNGN Functional ArchitectureIMS General Evolution:IMS Functional architectureIMS Stage 2 descriptionIMS Call Control Protocol based on SIP and SDP Stage 3 [3GPP TS Rel-7 modified]H.248 Profile for controlling MRFP in the IMS; Protocol specification [3GPP TS Rel-7 modified]Common Basic Communication procedures; Protocol specificationRequirements for a NGN Session Control Protocol and analysis of the IMS SIP profile meets these requirementsInterworking between IMS and IP networks (Endorsement of 3GPP TS )Diameter-based protocol between CSCF and UPSF/SLF; Signalling flows and protocol details [3GPP TS V6.8.0 and 3GPP TS V6.6.0, modified]
32List of TISPAN Rel-2 deliverables (2/8) IMS Supplementary Services (ISS):Advice of Charge (AoC):Advice Of Charge (AOC) Stage 3Call Completion on Busy Subscriber (CCBS), Call Completion No Reply (CCNR):CCBS, CCNR Stage 3Call Waiting (CW):CW Stage 3SMS over NGN IMS:Overview of Messaging ServicesSupport of SMS over NGN IMS Stage 2Support of SMS and MMS over NGN IMS subsystem; Stage 3 [Endorsement of 3GPP TS Release 7]Messaging service using the IMS: Stage 3: Protocol specifications [Endorsement of 3GPP TS Release 6]Direct Communication (DC) Service:DC Service Description [Endorsement of OMA-ERELD-PoC-V1]DC Architecture and functional description [Endorsement of OMA-AD-PoC-V1]DC: SIP Protocol Specification (OMA-TS-POC_ControlPlane-V1, modified and OMA-TS-PoC_UserPlane-V1, modified and OMA-TS-PoC_XDM-V1, modified)Customized Originating and Terminating Multimedia Information Presentation (COMIP/CTMIP) and Customized Originating and Terminating Multimedia Information Filtering (COMIF/CTMIF):COMIP/CTMIP and COMIF/CTMIF Requirements AnalysisPresence Service (Presence):Presence Architecture and functional description
33List of TISPAN Rel-2 deliverables (3/8) PSTN/ISDN Simulation Subsystem (PSS):Closed User Group (CUG) Protocol specificationPSS Communication Diversion (CDIV) Protocol specificationPSS Conference (CONF) Protocol specificationPSS Malicious Communication Identification (MCID) Protocol specificationPSS Terminating Identification Presentation (TIP) and Terminating Identification Restriction (TIR) Protocol specificationPSS Explicit Communication Transfer (ECT) Protocol specificationPSS Multimedia Telephony (MMTel) Stage 1PSS Voice Call Continuity (VCC) Stage 2PSS XML Configuration Access Protocol (XCAP) over the Ut interfacePSS Message Waiting Indication (MWI) Protocol specificationPSS Communication HOLD (HOLD) Protocol specificationPSS Anonymous Communication Rejection (ACR) and Communication Barring (CB)PSS Originating Identification Presentation (OIP) and Originating Identification Restriction (OIR)
34List of TISPAN Rel-2 deliverables (4/8) IP Television (IPTV):Requirements for network transport capabilities to support IPTV servicesService Layer Requirements to integrate NGN services and IPTVIP TV Architecture:Dedicated subsystem for IPTV functionsIPTV functions supported by the IMSIMS-based IPTV stage 3 specificationDedicated IPTV subsystem stage 3 specificationFixed Mobile Convergence (FMC):FMC Requirements analysisCorporate Network:Business Communication RequirementsCore and Enterprise NGN Interaction Scenarios and Architectural RequirementsHosted Enterprise Services; Architecture and functional descriptionBusiness Trunking; Architecture and functional descriptionCustomer Network Gateway (CNG):Services requirements and capabilities for customer networks connected to TISPAN NGNCNG Architecture and Reference PointsHigh level customer network architecturesCustomer Devices architecture and interfaces and Reference PointsAnalysis of protocols for customer networks connected to TISPAN NGNAnalysis of security mechanisms for customer networks connected to TISPAN NGN R2Architecture and reference points of customer network devices for IPTV services
35List of TISPAN Rel-2 deliverables (5/8) Interconnection and Numbering Rel-2:Interconnect issues related to Numbering Naming and Addressing (NAR)Naming/Numbering Address Resolution (NAR)Register of assigned protocol numbers and namesIncorporating Universal Communications Identifier (UCI) support into the specification of Next Generation Networks (NGN)Accounting and Charging Rel-2:Charging management: Endorsement of 3GPP Rel-7 TS , , , and (modified)SIP Transfer of IMS Service Tariff Information; Protocol specificationPSTN/ISDN Emulation Sub-system (PES) Rel-2 Improvements:PES Functional architecturePES Stage 3 specificationQoS and Overload Control Rel-2:Resource and Admission Control and the (x-RACF) in the Resource and Protocol specificationQoS Rel-2:Requirements for QoS in a NGNArchitectures for QoS handlingOverload and Congestion Control (OCC):Control of Processing Overload; Stage 2 RequirementsOCC Architecture; Part 2: Overload and Congestion control (GOCAP)OCC Part 4: Adaptative Control for the MGCOCG Part 5: ISDN overload control at the Access Gateway
36List of TISPAN Rel-2 deliverables (6/8) Network Attachment Sub-System (NASS) Rel-2 Improvements:NASS Functional ArchitectureNASS: e2 interface based on the DIAMETER protocolNASS: a2 interface based on the DIAMETER protocolNASS: User-Network Interface Protocol DefinitionsCustomer Network Gateway Configuration Function; e3 Interface based upon CWMPNASS: e4 interface based on the DIAMETER protocolResource and Admission Control Subsystem (RACS) Rel-2 Improvements:RACS Functional ArchitectureRAS: H.248 Profile for controlling Border Gateway Functions (BGF) Protocol specificationRACS: DIAMETER protocol for session based policy set-up information exchange between the Application Function (AF) and the Service Policy Decision Function (SPDF); Protocol specification Release 2Re Reference Point; Protocol SpecificationRi' Reference Point; Protocol SpecificationH.248 Profile for controlling Access and Residential GatewaysNetwork Management Rel-2:WG8 Specification GuidelinesNGN Management Network Resource Model (NRM):NRM Part 1: RequirementsNRM Part 2: Information serviceNRM Part 3: Solution set
37List of TISPAN Rel-2 deliverables (7/8) NGN Subscription Management (SM):SM Part 1: RequirementsSM Part 2: Information ModelSM Part 3: Functional ArchitectureNGN SECurity (SEC) Rel-2:SEC Feasibility study of prevention of unsolicited communication in the NGNFeasibility study on Media Security in TISPAN NGNSEC Requirements - Rel-2SEC Security Architecture; Rel-2SEC Threat, Vulnerability and Risk Analysis - Rel-2NGN Release 2 Lawful Interception; Stage 2 definitionSecurity Miscellaneous:NGN Security; Report on security of identity in the NGNNGN Security; Method for application of ISO requirements in NGN
38List of TISPAN Rel-2 deliverables (8/8) InterworkingSolution for REFER interworking problemsISDN/SIP interworkingEndorsement of the SIP-ISUP Interworking between the IMS and CS networks [3GPP TS (Release 7), modified]SDP Interworking between SIP/SDP and H.248/SDPOther Rel-2 aspectsH.248 Non-Call Related Procedures and Management System InteractionH.248 Profile for controlling Trunking Media Gateways (TMG) [Endorsement of 3GPP TS (V7.7.0), modified]Support of Overlap sending v2 in a IMS NGN Release 2Feasibility study on Out-of-band DTMF transportNGN Architecture to support emergency communication from citizen to authorityXML Document Management; Architecture and functional descriptionTesting Rel-2Network Performance objectives tests for IP-based Voice servicesExplicit Communication Transfer (ECT) Testing - Part 1: PICSExplicit Communication Transfer (ECT) Testing - Part 2: TSS&TPIMS NNI Interworking Test Specifications; Part 1: Test Purposes for IMS NNI InterworkingIMS NNI Interworking Test Specifications; Part 2: Test Descriptions for IMS NNI InterworkingInterworking between SIP and Bearer Independent Call Control Protocol or ISDN User Part, Profile A and B Part 1: Test Suite Structure and Test Purposes (TSS&TP)