NGN & TISPAN. Source: Rainer Münch, TC TISPAN Chairman. Presenter: Edmond OSSTYN: Alcatel. Table of Contents

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1 NGN & TISPAN Source: Rainer Münch, TC TISPAN Chairman Presenter: Edmond OSSTYN: Alcatel 1 Table of Contents Introduction TISPAN_NGN Release 1 TISPAN_NGN Release 2 Summary Annex List of R1 Deliverables 2 1

2 2 3 Introduction 4

3 Overview on TISPAN Structure STFs Interest Groups TISPAN TISPAN Chairman: R. Münch TISPAN Vice Chairmen: R. Brennan B. Chatras D. Knight M. Niekus I. Spiers ETSI Support Team: A. Luther-Ascensio D. Boswarthick C. Julien A. Sultan System Group F-MMS Project G. Engström D. Knight R. Münch WG 1 Services & Applications G. Engström WG 2 Architecture K. Pulverer & R. Brennan WG 3 Protocols R. Forbes WG 4 Numbering, Addressing, Routeing T. Holmes WG 6 Testing M. Brand WG 7 Security J. Rossebø WG 8 Network Management E. Ronco P. Lottin VC-none VC-none J. Horrocks F. Silletta VC-none M.Euchner F. Lindholm G. Caryer L. Mak 5 External Relations (1/3) TISPAN considers co-operation with external bodies and organisations as essential. TISPAN is providing input and considering feedback. External bodies and organisations are showing great interest in working together with TISPAN as a place to come for implementable NGN specifications. For example, TISPAN have active delegations from China, Japan, North America, South America. Per meeting, TISPAN are attracting about 150 delegates and handling over 250 documents. TISPAN is looking forward to any enhanced or new cooperation, any organisation or body that wishes to co-operate with TISPAN is most welcome. Coordination of a global message. 6 3

4 External Relations (2/3) Existing close co-operations TISPAN wishes to strengthen (alphabetical order) 3GPP ATIS DECT DSL Forum DVB Ecma International FMCA HGI IETF ITU-T OMA Telemanagement Forum TTC 7 External Relations (3/3) In preparation or planned (alphabetical order) 3GPP2 Asian operators CableLabs Mexican operators Organisations from South America TIA... TISPAN Plenary in Brazil (November 2006), plus 2 days workshop. Link to TISPAN open area, e.g. published documents and latest drafts Link to TISPAN area for ETSI members 8 4

5 TISPAN_NGN Release 1 9 Completion of TISPAN_NGN Release 1 At TISPAN#9 (December 2005), TISPAN_NGN Release 1 was completed. The first set of implementable NGN specifications being used to build NGN. Main features Core TISPAN IP Multimedia Subsystem and its relationship to other TISPAN NGN components Network Attachment Subsystem (NASS) Resource and Admission Control Subsystem (RACS) PSTN/ISDN Emulation Subsystem (PES) PSTN/ISDN Simulation Services (PSS) The complete list of deliverables is contained at the end of the presentation. 10 5

6 TISPAN_NGN Overall Architecture Concept of subsystems Applicat ion s Service Layer User profiles Ot h e r subsystem s Core IMS User Equipment Ne tw ork Attach m en t Subsyst e m Re sou rce an d Adm ission Con t rol Su bsyste m PSTN/ISDN Em ulation su bsyst e m Other networks Transport Layer Transfer Functions 11 Release 1 architecture Functional Entities and Interfaces Ut Application Server (SIP, OSA, IN) Ut Sh ISC Dh Rf/Ro Charging Function User Equipment (Home Network) e3 CNGCF e1 ARF e5 PDBF e1 e2 UAAF a3 a1 Legacy Terminals CLF AMF User Data e2 a4 a2 NACF e4 Ra AGCF e2 Gq A-RACF Re Gq Rq UPSF Mw SPDF Ia Cx P-CSCF Gq Mw SLF I/S-CSCF Gq Dx 3GPP IP-CAN Chargi ng I nf ormat i on Rf/Ro IWF Iw Ib Mx IBCF Ic Mi Mx Gq BGCF Mx SPDF SGF Mr Mg Mj MRFC MGCF Mp Mn PSTN / ISDN Ia Other IP Networks Access Node RCEF C-BGF L2TP Transport Layer MRPF T-MGF I-BGF 12 6

7 Common Components of TISPAN_NGN Release 1 Functional Architecture A Common component can be accessed by more than one subsystem. Two types can be identified Component known in 3GPP IMS New component, defined by TISPAN Components known in 3GPP IMS Subscription Locator Function (SLF) Application Server Function (ASF) Charging and Data Collection Functions New components defined by TISPAN User Profile Server Function (UPSF) Application Server Function (ASF) with itf to RACS Interconnection Border Control Function (IBCF) Interworking Function (IWF) Charging and Data Collection Functions with itf to IBCF 13 UPSF Service-level user identification, numbering and addressing information. Service-level user security information: access control information for authentication and authorization. Service-level user location information at inter-system level: the UPSF supports the user registration, and stores intersystem location information, etc. Service-level user profile information. The UPSF may store user profile information related to one or more service control subsystems and applications. The UPSF does not contain profile information related to IP connectivity subscriptions. Such information is hold in the Network Attachment Subsystem (NASS). However, where it makes sense in the context of a particular business model, the UPSF may be co-located with the data base function of the NASS. 14 7

8 IBCF, IWF The IBCF controls the boundary between two operators' domains (IP). The IBCF interacts with transport resources, through the resource and admission control subsystem (including NAPT and firewall functions). The IBCF screens signalling information based on source/destination, beyond what is already performed inside each of the subsystems (e.g. by the THIG functionality of the I-CSCF for the IMS core subsystem). When interacting with the IMS component of the architecture, the IBCF encompasses the functionality of the Application Layer Gateway (3GPP ). The IBCF inserts the IWF in the signalling route when appropriate. The IWF performs the interworking between NGN SIP profiles and other SIP profiles or IP-based protocols (e.g. the H.323 protocol). 15 Network Attachment Subsystem (NASS) Dynamic provision of IP addresses and other terminal configuration parameters. Authentication taking place at the IP layer, prior or during the address allocation procedure. Authorization of network access based on user profiles. Access network configuration based on user profiles. User profiles related to the access subscription only. Location management taking place at the IP layer. The Release 1 NGN architecture does not mandate a single NASS instance to support multiple access networks. This does not prevent operators from deploying NASS functions that are common to multiple access networks (e.g. one user profile database common to different access networks). 16 8

9 NASS Components CNGCF Customer Network Gateway Control Function ARF Access Relay Function AMF Access Management Function UAAF User Access Authorisation Function NACF Network Access Configuration Function CLF - Connectivity session Location and repository Function PDBF - Profile Data Base Function 17 NASS Interfaces Interface e1 is an access-network-specific interface, and is dependant on the access technology being used (xdsl, WLAN, etc.). Interface e5 is a roaming interface, and is independent of the access technology. Interface e5 is used to provide a consistent method for the visited NGN network to communicate with the home NGN network. Interface e2 is DIAMETER-based. Interface e4 is DIAMETER-based. 18 9

10 Resource and Admission Control Subsystem (RACS) RACS provides admission control and gate control functionalities (including the control of NAPT and priority marking), with admission control involving checking authorisation based on user profiles held in the network attachment subsystem, on operator specific policy rules and on resource availability. RACS checks resource availability, it implies that the admission control function verifies whether the requested bandwidth is compatible with both the subscribed bandwidth and the amount of bandwidth already used by the same user on the same access, and possibly other users sharing the same resources 19 RACS Components A-RACF is always in the access network, supports resource reservation. For admission control and final policy decisions, the A-RACF receives requests from the SPDF. The SPDF (Service-based Policy Decision Function) provides the AF (i.e. AGCF, AS, P-CSCF, IBCF) with a single point of contact, via Gq based on DIAMETER. The SPDF may be collocated with or separated from the AF. Protocols have been specified applicable at the Rq interface (SPDF <-> A-RACF) and Ia interface (SPDF <- > BGF) 20 10

11 RACS and QoS In Release 1, QoS applies only at the access, not endto-end (-> Release 2). The AF maps the application layer QoS information, e.g. P-CSCF maps parameters defined in SDP, into QoS request information to be sent via the Gq interface to the SPDF. The Resource Control Enforcement Function (RCEF) is a logical element in the transport layer that enforces the policies by means of which RACS can assure the use of the resources. The RCEF is a specific instance of the BGF. It sits in an access network or at one of its edges (e.g. IP edge). A Border Gateway Function (BGF) provides the interface between two IP-transport domains. The Core BGF (C-BGF) sits at the boundary between an access network and a core network, at the core network side (e.g. border node). 21 PSTN/ISDN Emulation Subsystem (PES) "Provides PSTN/ISDN service capabilities and interfaces using adaptation to an IP infrastructure" Emulates a PSTN/ISDN network from the point of view of legacy terminals (or interfaces) by an IP network, through a gateway. All PSTN/ISDN services remain available and identical (i.e. with the same ergonomics), such that end users are unaware that they are not connected to a TDM-based PSTN/ISDN. TISPAN has defined two PES approaches Softswitch based PES Analogue users ISDN users IMS based PES Analogue users only ISDN terminals are out of scope 22 11

12 Softswitch based PES h Master Customer Data j AS Service A Service B i Service C NOTE: Lines inside the grey area are purely illustrative. Information flows may be through the Distributor or direct as an implementation option Customer Location Local Data Distributor Trunk Routing PSTN/ISDN Emulation Subsystem Topology Hiding Gateway f Other NGN s S/T Z AGF ba c a AGCF AGCF Service 1 Service 2 Service 3 PSTN/ISDN Services g RACS Gq SGCF TGCF e IN PSTN / ISDN AGF Transport MGF RG A-BGF I-BGF Other NGN s 23 IMS based PES S/T Ut Network Attachment Subsystem e 2 P1 Gm e 2 Gq' Ut UPSF PES AGCF Gq' Sh P2 Cx Mw Mw P-CSCF Application Servers Other types of service logic PSTN/ISDN Emulation logic ISC I/S-CSCF Mr Mi MRFC Mp Dh Dx SLF Mw /Mk/Mm BGCF Mg Mj Resource and Adm ission Control Subsystem Rf/Ro Mk MGCF Mk Mn Ie Rf/Ro P3 SGF Rf/Ro PSTN/ISDN Chargin g Function s Ib IBCF Iw IWF Gq' Ic Other IP Networks Z GW MRFP T-MGF S/T Z MG IP Transport (Access and Core) I-BGF 24 12

13 Specific Components for IMS based PES (1/2) AGCF Access Gateway Control Function implements the role of the PES access point PES access point shall be equivalent to the concatenation of the behaviour of a UE and a P-CSCF entity, plus dial tone management specific aspects for registration and call control (e.g. local data, SIP headers) is part of the trust domain encompasses the functionality of an H.248 Media Gateway Controller (MGC) as defined in ITU-T Recommendation H and of a SIP User Agent as defined in RFC 3261 co-ordinates the MGC and SIP UA components appears to other CSCFs as if it were a P-CSCF 25 Specific Components for IMS based PES (2/2) Application Server implements the role of a PES application server supports PSTN/ISDN emulation logic acts either as a proxy server or as a Back to Back User Agent supports SIP-I and ISUP 26 13

14 PSTN/ISDN Simulation Services (PSS) "Provides PSTN/ISDN-like service capabilities using session control over IP interfaces and infrastructure The provision of PSTN/ISDN-like services to advanced terminals (IP-phones) or IP-interfaces. There is no strict requirement to make all PSTN/ ISDN services available or identical, although end users expect to have access to the most popular ones, possibly with different ergonomics. Not by an individual subsystem! The services are supported in conjunction with the (TISPAN) Core IMS. 27 PSS in Release 1 and 2 Release 1 CDIV CONF MWI OIP OIR TIP TIR HOLD ACR CB MCID ECT Release 2 CCBS CCNR CW AoC Revision of R1 services 28 14

15 TISPAN_NGN Release 2 29 Synchronisation with 3GPP Synchronisation of TISPAN R2 with the ongoing work in 3GPP (e.g. R7, FMC). Objective: Single core solution. Ongoing discussions within TISPAN, 3GPP and SDOs

16 Services and Features (1/3) TISPAN is progressing the work on R2 concerning the following main new work items: Requirements analysis for FMC Requirements analysis for home networking (in cooperation with e.g. HGI). Requirements for network capabilities to support IPTV services (in cooperation with e.g. ATIS IIF and DVB). Close and direct co-operation with Ecma International on NGN services and capabilities NGN NGCorporateN interconnect requirements 31 Services and Features (2/3) According to the TISPAN alignment for R2, 3 new work items were raised, on requirements analysis for work that needs to be shared with other bodies. Requirements for originating and terminating party multimedia information presentation and restriction. Service Requirements and Network Capabilities for Release 2. Release 2 Definition

17 Services and Features (3/3) Regarding security, focus on requirements covering the following areas: Security Network security User security Security management Regulatory aspects Lawful Interception Data privacy Data retention 33 Release 2 - Architecture New Functionalities (in progress) Evolution of RACS Resource control in the core Towards End-to-end QoS Evolution of NASS Additional access technologies IP-TV support Online Charging Overload control (GOCAP) 34 17

18 Overview on New Work Numbering, Naming, Addressing, Routeing Active discussions with GSMA IREG (Interworking Roaming Expert Group) Infrastrucure ENUM GSMA IPX backbone (IP exchange next generation of GPRS Roaming Exchange) Identification of key management and operational issues to be considered for a shared approach to be viable It is expected that key interconnect issues will also come to the fore. Objective: Single global solution 35 Overview on New Work Security, Testing, Network Management Security Joint meeting with 3GPP SA3 on authentication and NAT/FW (network address translation, firewall) transversal issues. Authentication to NASS and to IMS services Testing Conformance to TISPAN, 3GPP, ITU-T standardised protocols Global interoperability of PES and Core IMS NGN R1 Network Management NGN OSS (Operation Support System) Service interfaces in line with NGN OSS architecture, e.g. subscription management Common information model 36 18

19 QoS The TISPAN System Group will have overall control of QoS issues within TISPAN and will allocate work to the Working Groups as necessary. TISPAN and STQ will work in close co-operation. STQ works on what we want to achieve in terms of parameters and numbers User-to-user and application layer QoS requirements The network performance required to support these requirements TISPAN works on how we achieve this in terms of design Functional and architectural requirements Signalling and protocols to be implemented Co-operation with other bodies as well, e.g. ITU-T, IETF etc., see also External Relations at the beginning of the presentation. 37 Summary 38 19

20 Summary Thanks to all TISPAN collaborators and officials! Identification of the right issues in order to cover the market needs. Provision of high quality and implementable deliverables. Maxim: Co-operation and communication, internally and externally. Globalisation of our results. NGN means TISPAN 39 Annex List of R1 Deliverables 40 20

21 TISPAN_NGN R1 Deliverables (1 of 4) Overall NGN Release 1: Release Definition TR Terminology TR Services and Capabilities Requirements for TISPAN NGN Release 1 TS NGN Architecture: Overall network architecture; functional architecture ES Organization of User Data TR Service Related Multimedia Telephony with PSTN/ISDN Supplementary Services TS IP Multimedia System (IMS) messaging; Stage 1 TS Videotelephony over NGN; Service Description TS Presence Service; Stage 1 TS Service Provider Access; Open Service access for API requirements; Part 3 EG XML Group Management; Architecture and Functional Description (Endorsement of OMA-AD-XDM-V1_0) TS Presence service; Functional Architecture and Functional Description; 3GPP TS , modified; OMA-AD-Presence_SIMPLE-V1_0, modified (Stage 2) TS Common Basic Communication procedures TS PSTN/ISDN simulation services; Communication Diversion (CDIV); Protocol specification TS PSTN/ISDN simulation services; Conference (CONF); Protocol specification TS PSTN/ISDN simulation services; Message Waiting Indication (MWI); Protocol specification TS PSTN/ISDN simulation services; Originating Identification Presentation (OIP) and Originating Identification Restriction (OIR); Protocol specification TS PSTN/ISDN simulation services; Terminating Identification Presentation (TIP) and Terminating Identification Restriction (TIR); Protocol specification TS PSTN/ISDN simulation services; Communication Hold (HOLD); Protocol specification TS PSTN/ISDN simulation services; Communication Hold (HOLD); Protocol specification TS PSTN/ISDN simulation services; Anonymous Communication Rejection (ACR) and Communication Barring (CB); Protocol specification TS PSTN/ISDN simulation services; Malicious Communication Identification (MCID); Protocol specification TS Presence Service; Protocol specification; 3GPP TS , modified; OMA-TS-Presence_SIMPLE-V1_0, modified (Stage 3) ES XML Group Management; Stage 3 Specification; (Endorsement of OMA OMA-TS-XDM_Core-V1_ and OMA-TS-XDM_Shared-V1_ ) TS Messaging Service using the IP Multimedia (IM) Core Network (CN) Subsystem; Stage 3; Protocol Specifications TS PSTN/ISDN simulation services; Extensible Markup Language (XML) (XCAP) for Manipulating NGN PSTN/ISDN Simulation Services; Protocol specification PSTN/ISDN simulation services; Extensible Markup Language (XML) Configuration Access Protocol (XCAP) over the Ut interface PSTN/ISDN simulation services; Explicit Communication Transfer (ECT); Protocol specification TS TS TS TISPAN_NGN R1 Deliverables (2 of 4) Emergency services Requirements of the NGN network to support Emergency Communication from Citizen to Authority TS Emergency Location Protocols TS TISPAN adaptations to 3GPP IMS Service requirements for end-to-end session control in multimedia network TS IP Multimedia Subsystem (IMS); Functional Architecture ES IP Multimedia Subsystem (IMS); Stage 2 Description; TS Release 6, modified TS Analysis of relevant 3GPP IMS specifications for use in TISPAN_NGN Release 1 specifications TR SIP and SDP Stage 3 protocol specification ES Endorsement of 3GPP TS (Release 6) and TS (Release 6) TS Endorsement of the SIP-ISUP Interworking between the IP Multimedia (IM) Core Network (CN)subsystem and Circuit Switched (CS) networks ES IP Multimedia Subsystem (IMS); Stage 2 Description; Charging Specification ES IP Multimedia; H.248 Profile for controlling MultiMedia Resource Function Processors in the IP Multimedia subsystem; Protocol specification ES PSTN/ISDN Emulation Subsystem (PES) PES General Interworking for SIP/SIP-T (BICC, ISUP) [ITU-T Recommendation Q , modified] EN Softswitch Approach NGN and PSTN/ISDN emulation (Stage 2 of Softswitch-based PES) ES PSTN/ISDN Emulation; Development and verification of PSTN/ISDN Emulation TR PSTN/ISDN Emulation; H.248 Profile for controlling Trunking Media Gateways in the PSTN/ISDN Emulation Subsystem; Protocol specification ES H.248 profile for controlling Access and Residential gateways in the PSTN/ISDN Emulation subsystem; Protocol Specification ES IMS-based approach IMS-based PSTN/ISDN Emulation subsystem; Functional Architecture IMS-based PSTN/ISDN Emulation Call Control Protocols; Stage 3 TS TS

22 TISPAN_NGN R1 Deliverables (3 of 4) Resource and Admission Control Subsystem (RACS) Resource and Admission Control subsystem (RACS); Functional Architecture ES Resource and Admission Control; DIAMETER protocol for session based policy set-up information exchange between the Application Function (AF) and the Service Policy Decision Function (SPDF); Protocol specification TS Resource and Admission Control; Protocol for QoS resource reservation information exchange between the Service Policy Decision Function (SPDF) and the Access-Resource and Admission Control Function (A-RACF) in the Resource and Admission Control subsystem; Protocol specification ES Resource and Admission Control; H.248 Profile for controlling Border Gateway Functions (BGF) in the Resource and Admission Control subsystem; Protocol specification ES Resource and Admission Control; DIAMETER protocol for session based policy set-up information exchange between the Application Function (AF) and the Service Policy Decision Function (SPDF); Protocol specification TS Interworking; Trunking Gateway Control Procedures for interworking between NGN and External CS Networks ES Endorsement of TS Interworking between IMS and IP networks TS Network Attachment Subsystem (NASS) Network Attachment subsystem (NASS); Functional Architecture ES Network Attachment; DIAMETER based protocol for IP-connectivity related session data exchange between the Connectivity Session Location and Repository Function (CLF) in NASS and the Access-Resource and Admission Control Function (A- RACF) in RACS; Protocol specification ES Network Attachment Subsystem e2 interface based on the DIAMETER protocol ES Network Access Interface protocol definitions for network access through xdsl and WLAN access networks TS Roaming interface protocol definitions for TISPAN NGN network access TS Security TISPAN_NGN Security (NGN_SEC); Requirements for Release 1 TS Threat and Risk Analysis TR Security Architecture TS TISPAN_NGN R1 Deliverables (4 of 4) Security TISPAN_NGN Security (NGN_SEC); Requirements for Release 1 TS Threat and Risk Analysis TR Security Architecture TS NGN Overload and Congestion Control Overload and Congestion Control for H.248 (between Media Gateways and Media Gateway Controllers); Protocol Specification TR Quality of Service Review of available material on QoS requirements of Multimedia Services TR Network Management Network Management; Operations Support System Vision TR Network Management; Operations Support System; Requirements TS Network Management; Operations Support System; Architecture TS Network Management; Operations Support System; Standards Overview and Gap Analysis TR