Network Architecture and Fast Vertical Handover Scheme for UMTS-WLAN Interworking 


Vol. 32,  No. 8, pp. 492-501, Aug.  2007


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  Abstract

UMTS-WLAN interworking approach can make the best use of the advantages of both networks by eliminating the stand-alone defects of the two services. For the interworking mechanisms of WLANs and UMTS networks, two major solutions have been proposed, namely loose coupling and tight coupling. The loose coupling approach provides separate data paths for WLAN and UMTS. On the other hand, the tight coupling provides a full integration of the WLAN network and the UMTS core network. The loose coupling has been preferred due to the simplicity and less reconfiguration requirement. However, loose coupling is worse in seamless mobility, QoS provision, and network security. In order to lessen the problems involved in the UMTS-WLAN interworking approaches, we propose a new interworking network architecture and a fast vertical handover scheme by employing Mobility Anchor (MA) for interworking between the two different networks. MA can enable authentication and session initialization before L2 handover of the mobile terminal, so that the seamless and fast vertical handover become possible. Thru analysis and numerical experiments, we proved that the proposed scheme has been validated.

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  Cite this article

[IEEE Style]

I. Kim, S. Lee, E. Kim, J. Park, "Network Architecture and Fast Vertical Handover Scheme for UMTS-WLAN Interworking," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 8, pp. 492-501, 2007. DOI: .

[ACM Style]

Incheol Kim, Sungkuen Lee, Eallae Kim, and Jinwoo Park. 2007. Network Architecture and Fast Vertical Handover Scheme for UMTS-WLAN Interworking. The Journal of Korean Institute of Communications and Information Sciences, 32, 8, (2007), 492-501. DOI: .

[KICS Style]

Incheol Kim, Sungkuen Lee, Eallae Kim, Jinwoo Park, "Network Architecture and Fast Vertical Handover Scheme for UMTS-WLAN Interworking," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 8, pp. 492-501, 8. 2007.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880