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Completing the Convergence Puzzle: A Survey and A Roadmap

Completing the Convergence Puzzle: A Survey and A Roadmap. IEEE Wireless Communications‧June 2009 DJAMAL-EDDINE MEDDOUR, USMAN JAVAID, AND NICOLAS BIHANNIC, ORANGE LABS TINKU RASHEED, CREATE-NET RESEARCH CENTER RAOUF BOUTABA, WATERLOO UNIVERSITY. 698430005 蔡維倫. Outline. Introduction

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Completing the Convergence Puzzle: A Survey and A Roadmap

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  1. Completing the Convergence Puzzle:A Survey and A Roadmap IEEE Wireless Communications‧June 2009 DJAMAL-EDDINE MEDDOUR, USMAN JAVAID, AND NICOLAS BIHANNIC, ORANGE LABS TINKU RASHEED, CREATE-NET RESEARCH CENTER RAOUF BOUTABA, WATERLOO UNIVERSITY 698430005 蔡維倫

  2. Outline • Introduction • Convergence • Existing Solutions • Comparison • Possible Timeframe • Conclution

  3. Introduction • This article surveys different technologies which offer seamless handover and converged access to mobile voice, video, and data services

  4. Home Network Convergence • The user can access different types of services from the same terminal • A service is available on more than one handsets • Diverse communication technologies are expected within the home network sphere

  5. Home Network Convergence • Mainly : Home Gateway • Local data exchange • Interconnection to service platforms • SIP(Session Initiation Protocol) and IMS(IP Multimedia Subsystem)

  6. Access Network Convergence • Transport layer • The reduction in operational expenditure(OPEX) cost • Aggregate mobile access nodes into a backhaul network shared with a fixed access network • The use of a shared infrastructure for heterogeneous access solutions • Service control layer • Allows to the same service irrespective of the access network infrastructure

  7. Core Network Convergence • IMS • Mobile access network • 3GPP (3G Partnership Program) • Fixed broadband access network • TISPAN (Telecommunications and Internet Converged Services and Protocols for Advanced Networks) of ETSI (European Telecommunications Standards Institute) • ITU (International Telecommunications Union) of NGN GSI (Next Generation Networks Global Standard Initiative)

  8. Core Network Convergence • The IMS is a core network infrastructure to control user sessions for the following services: • Conversational services : voice and video • Real-time data-oriented services : instant messaging and presence • Audio-visual services

  9. Core Network Convergence • Benefits expected by the operator deploying an IMS infrastructure • To use a common functional infrastructure for services control • Allows the operator to better control resources, especially significant in the mobile domain for packet switching services • Service triggering toward application servers in accordance with user service profiles • Solution for PSTN (public switched telephone network) renewal and expectations of OPEX/CAPEX (capital expenditure) reductions

  10. Application Server Level Convergence • To offer differentiated QoS • Consider it as a standalone convergence for Web players • Allows the operator to set policy on Qos an charge for services accordingly

  11. Existing Solution Toward Seamless Convergence • WLAN (wireless local area network) • High data rates to mobile users • Low network deployment cost • UMTS (Universal Mobile Telecommunications System) • BSs in UMTS offer larger cells • Provides nearly worldwide coverage • UMA (Unlicensed Mobile Access) • I-WLAN (Interworking WLAN) • MIH (media-independent handover)

  12. UMA • Access network level • Currently endorsed by the 3GPP under GAN (generic access network) • Offer call continuity from a GAN-capable terminal between local area network and the GSM infrastructure

  13. UMA • Gb interface : 3GPP defined • PSTN (public switched telephone network)

  14. UMA • Recent evolution : EGAN (enhanced GAN) • Spec. TR 43.902 • Gb  Gn • Allow GANC (GAN controller) to interconnect directly with GGSN (GPRS gateway service node) • Interface between GAN terminal and GANC : IPSec tunnel • Strong security requirement • piggyback

  15. I-WLAN • 3GPP standard • Between a WLAN access network and the 3GPP core network • Architecture (release 6) • WAG (wireless access gateway) • PDG (packet data gateway) • AAA server

  16. I-WLAN • WAG • Data from UE through fixed Ans are aggregated at the WAG • Route packets toward the home domain • PDG • A gateway toward external PDNs (packet data networks) • AAA server • Interacts with PDG to perform service-level AAA functions

  17. I-WLAN protocols • Remote IP layer • Route packets between UE and PDN • Tunneling layer • Tunneling header • Encapsulate remote IP layer packets • Decrypt the IP packets • Transport IP layer • Transport remote IP layer packets encapsulated into IPSec tunnel

  18. I-WLAN Evolution • SAE (System Architecture Evolution) • Support seamless mobility between heterogeneous access networks • Mobility is under study for I-WLAN in release 8 and is based on MIP • DSMIPv6

  19. MIH • Defined : IEEE802.21 working group • Defines a framework to support information exchange that facilitates mobility decisions • Support transparent service continuity • Considered both wired and wireless technologies

  20. MIH • MIES、MICS、MIIS

  21. Comparison

  22. Possible Timeframe

  23. Conclusion • Massive interest • WiFi • High data rates at low cost • Do not guarantee seamless coverage, especially with high mobility • Bluetooth • Supports low data rates (compared with hotspot technologies) • Saves in power • GSM/GPRS and UMTS • Wide area coverage and support high mobility • High cost

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