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Services Programming for 3G (and beyond) Mobile Networks

Services Programming for 3G (and beyond) Mobile Networks. Stephen Weinstein NEC USA C&C Research Laboratories Princeton, N.J., USA Stephen Weinstein March, 2000. Internet. BS. BS. BS. BS. BS. BS. RNC. BS. BS. BS. BS. BS. BS. Mars. SN.

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Services Programming for 3G (and beyond) Mobile Networks

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  1. Services Programming for 3G (and beyond) Mobile Networks Stephen Weinstein NEC USA C&C Research Laboratories Princeton, N.J., USA Stephen Weinstein March, 2000

  2. Internet BS BS BS BS BS BS RNC BS BS BS BS BS BS Mars SN Programmable Service Node in the 3G/4G Mobile Network Compatibility/extensibility through edge network adaptation and IP internetworking RNC Private Networks ISP ISP SN Telephony Gateways Wireless LAN e.g. IEEE 802.11 Cellular mobile provider IP backbone with QoS services Hot spot wireless LAN >25Mbps SN IP pen RNC SN IP camera RNC RNC IP scanner BS US TDMA PDA GSM CDMA IP appliances IP car Virtual keyboard (IP finger accelerometers) IP eyeglasses

  3. Concepts for Future Mobility Services Networks - Internet-oriented, peer-to-peer architecture with no central mobile switching center. - IP foundation: - Almost all applications IP-based. - IP-based network (which may build reliable links, such as MPLS paths, on ATM for QoS treatment of voice and other priority traffic). - Less guaranteed but cheap and convenient extended access through LANs, extranets, etc. - Both wired and wireless mobility. - Support of diverse air interfaces. (more)

  4. Concepts for Future Mobility Services Networks (continued) - Intelligence at the edge (e.g. programmable service node). - Programmable interworking conversions example: SS7 - IP network signaling TDMA frame - IP packet user data - Programmable services for users - Support for IP appliances, no longer computer peripherals. - Location-based services (local “yellow pages”, DNS, printer, navigation, …). - Virtual Private Networks (VPNs). - Network adaptation to the visitor rather than the other way around. - Programmable operator features - Policy-based traffic treatments (classification, routings, mappings in network services). - Custom management features (e.g. line interface configurations, traffic measurements). - Active network features (content-based routing, dynamic cacheing, …)

  5. Example: GSM-ATM Interworking Function[Thomas Kuehnel, kuehnel@ccrl.nj.nec.com] SDL Code Generation Call control functional specification Signaling transformation Address Server Control plane SS7 Stack ATM UNI Q2931 SAAL SCCP MTP3 MTP2 GSM A-Interface ATM NIC E1 NIC ATM User plane

  6. Internet Policy-Based Services An old/new concept: QoS treatment/choice of core network service for most (not all) communication sessions determined by policy, not in per-session UNI signaling UNI Access router, mux, PBX, base station, … Public Network Users Signaling proxies Addressing info and user data Policy implementation (including executables) Policies More accurately: Invocation of core network services delegated to an access system-network interface Policy specifier (network operator, systems administrator, department head, ….)

  7. Example of a Programmed Policy-Based Service: GUEST IP [Jens-Peter Redlich, redlich@ccrl.nj.nec.com, pat. pending] - Host network adapts to the visitor, emulating visitor’s home network. - No reconfiguration of IP parameters in visitor’s device. - Care/of IP address used for visitor traffic going outside host network. - Selective (and automatic) access to local resources: printer, DNS, …... - Supports multiple devices with the same (private) IP address. Not full mobility: visitor’s location is not (necessarily) registered with home agent. Will be tested at NOMS 2000 (Honolulu, April 10-14, 2000).

  8. Internet Guest IP Host’s guest network IP Address translation visiting device care/of Visitor’s home network (Optional) IP Tunnel Firewall Intelligent Router IP Tunnel Firewall visiting devices Host’s private network Access to selected local resources

  9. Internet Programming Modes Pre-installed Dynamic loading/unloading Active Network Access Node Access Node Access Node Resources API Resources API Processor Processor Processor Infrequent installations & upgrades Network operator Equipment vendor software Open-market software vendor Open-market software vendor Request Network operator Open-market software vendor

  10. IEEE P1520 Router Resources API (L-Interface)http://www.ieee-pin.org Interface in CORBA IDLMethods: discover(.), get(.), set(.), delete(.), add(.), modify(.), … Classifier Forward Queue scheduling CPU cycles Memory (and others)

  11. Programming API: Different from Switch/Router Control Protocol Software Vendor Y Software Vendor Z Software Vendor X IEEE P1520 MSF API Forwarding environment Line interface card (configuration, assignment of execution resources) Bus or switching fabric Generic components: classifier, dropper, shaper, scheduler Custom components: Load/unload executables Alternative protocols Execution environment CPU allocation to threads Memory alloc. to threads Security separations (to be implemented) ……………. GSMP Switch/router functionalities Execution Environment on a switch or router • API offers: • Isolation from particular switch control protocol • Methodology (inheritance) for extension of functionality; legacy software still • usable after API adds new functionality.

  12. software repository Intelligent Router Platform Mapping into core network services Classified traffic Alternative core network services Internet MPLS, DiffServ, IntServ IP Applications Sche- duling IP Traffic mix IP traffic Classifier ATM network SVCs Frame Relay Virtual Networks Signaling proxies Operator CORBA router object Special processing module Scheduling module Dynamically loadable and unloadable modules FTP or HTTP Policies

  13. Intelligent Router Platform • PC/Linux on 230MHz and above machines • Handles traffic of loaded 100BaseT LAN • (Precompiled) executable modules loaded for operational functions and policy-based • services • Examples implemented or planned: Guest IP, Mobile IP, virtual router slices, VPNs, • signaling proxies and conversions, enroute • processing, IP appliance support protocols, • Radio Node Controller support protocols for • diverse air interfaces

  14. Conclusions Programmability for mobile networks supports - “Home away from home” services for users of phones, computers, IP appliances. - Protocol and data structuring implementations and transformations - Accommodation of multiple air interfaces and legacy systems. - Internetworking extensibility - Policy-based services set by organizations and users; minimizing signaling requirements by the end user for typical traffic types. - An open market in creation of new mobile capabilities and services.

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