synergies between IP, mobile and telephony networks evolution towards NGN AJAL.A.J Assistant Professor –Dept of ECE, Federal Institute of Science And Technology (FISAT) TM MAIL: email@example.com
Target NGN• IP services and network current state,• control plane architecture,• VoIP,• Mobility and nomadism ,• QoS support,• IPv6 migration,
Network topography & terminology NA Concentrating Local switching Long haul switching Multiplexing or forwarding or forwarding Access Edge Core Local
POSSIBLE LOCAL AND CORE NGNS Access services APF Managementresidential,SME Services SPF Management Local NGN Core NGN IAD Resources xDSL, OF RPF RPF Management OF Internet AN soho NTU ENN CNN CNN Border Node GPRS, UMTS Network resources Access IAP/ISPIAD Integrated Access DeviceAN Access NodeCNN Core Network Node Edge /CoreENN Edge Network NodeNTU Network Termination UnitOTN Optical Transport NetworkRPF Resources Control Plat-formSPF Services Control Plat-formAPF Access to the services Plat form logical links
Traditional domestic IP network Access Edge+Core Call Radius Back SCP Server Server Office SGCustomer SS7 Edge Router NAS POTS ISDN Edge Core Border NAS Router Router Router GSM Internet BAS ADSL cable Border Router Leased Line IAP/ISPBAS: Broadband Access ServerNAS : Network Access ServerSCP: Service Control PointSG: Signalling Gateway
Services• Two main services are supported:1. aggregation services that consist in collecting the traffic of not-always connected users through Access Servers such as NAS and BAS and delivering it to IAPs/ISPs,2. transport services that convey the traffic of always connected users between sites directly attached to the IP network and towards Internet.
VoIP (H.323 and SIP) general architecture Management SCP/IP Application SCPService Plane server INAP/IP API Signaling gateway Gatekeepers CCF or Proxy SIP SS7 Sigtran H.323 PSTN IP CAA Media gateway SIP
Concerning service development, there are two major possibilities:1. Using an INAP/IP interface, IN existing services could be used. It seems to be a good way in order to offer classical IN services,2. Using an API or proprietary protocols, application server could be used in order to develop new multimedia services.
NGN introduction in CS and PS domains – post R5 architecture.Application Application servers (WAP, MExE , … ) SCP SCP AP AP AP AP AP AP AP AP CAP CAP CAP Mh R-SGW R-SGW Cx Ms HSS HSS CSCF CSCF Gc MmNetwork Service EIR EIR Mg Legacyand Control D Gr C Gi Signaling Gf Y MGCF MGCF SGSNS SGSNS GGSNS GGSNS Network MSCS MSCS GMSCS GMSCS Nc Mr Mc Mc X Mc X Iu MRF MRF T-SGW T-SGW Gi Transport TransportTransport Platform Platform (MGW, GSN) (MGW, GSN) Iu Multimedia UTRAN UTRA PSTN IP Network
Mobile IP architecture and principles. HA IP NetworkNC DATA Sub Network Home Sub Network FA Register Visited Sub Network NM
QoS support• QoS-enabled applications,• QoS policy management and enforcement,• QoS control through static, dynamic or scheduled procedures,• QoS monitoring at the network and customer levels,• per-QoS class accounting and charging,• inter-domain QoS support,• QoS economic model between peers.
IPv6 migration• IPv6 supports a number of enhanced features, such as:1. larger unicast and multicast address space,2. anycast address,3. aggregatable addressing for hierarchical routing,4. host address auto configuration,5. easy site renumbering,6. flow identification for QoS support,7. streamlined packet formats for improved forwarding performance,8. multicast support (explicit scope),9. extension headers used for supplementary capabilities,10. security providing packet authentication and encryption,11. mobility improvement through auto configuration, security, anycast address and destination options.
References1. "A Next generation architecture for the public network " ISS20002. TINA-C Network Resource Architecture, version 3.0 – Feb. 19973. TIPHON Network Architecture & reference configurations, DTS 02003 v0.0.1 – ETSI – March 19994. Multiservice Switching Forum Architecture, MSF99.074 – March 19995. Megaco Protocol Proposal Working draft, draft-IETF- megaco-protocol-01.txt – April 19996. Draft ITU-T Recommendation Q.BICC, Bearer Independent Call Control protocol definition7. RFC 2543 SIP : Session Initiation Protocol8. RFC 3015 Megaco Protocol v1.09. RFC 2002 IP mobility Support (for Ipv4)10. Universal Mobile Telecommunications System (UMTS); Virtual Home Environment (VHE) in the Integrated Services Digital Network, Evolved UMTS core network, ETSI EG 201 717.11. Universal Mobile Telecommunications System (UMTS); Service aspects; Virtual Home Environment (VHE), ETSI TR122 970, 3G TR 22.970.12. Eurescom Project P920, UMTS Network Aspects ( http://www.eurescom.de/public/projects/P900-series/p920/P920.htm13. RFC 1633 Integrated Services in the Internet Architecture: an Overview14. RFC 2475: An Architecture for Differentiated Services15. RFC 3031: Multiprotocol Label Switching Architecture16. draft-ietf-mpls-diff-te-reqts-00: Requirements for support of Diff-Serv-aware MPLS Traffic Engineering17. RFC 1883: Internet Protocol Version 6 (IPv6)