A new architecture for 3G and WLAN integration and inter-system handover management

WLAN has strong potential to provide a perfect broadband complement to the 3G wireless systems. This has raised much interest in their integration. In this paper, a novel architecture using the Network Inter-operating Agent (NIA), and Integration Gateway (IG) is proposed to integrate the 3G systems and WLANs of various providers that may not necessarily have direct service level agreement (SLA) among them. The proposed architecture is scalable as it eliminates the need for the creation of bilateral SLA among the 3G and WLAN operators. In addition, inter-system handover (ISHO) protocols using the concept of the dynamic boundary area is proposed to support seamless roaming between 3G and WLAN. The dynamic boundary area is determined based on the speed of the user and WLAN cell size. The ISHO procedures are initiated when a mobile user enters the boundary area of the WLAN and are completed before the user leaves the coverage area of the serving WLAN. This ensures that the roaming from WLAN to 3G is transparent to the applications. The performance evaluation shows that the proposed boundary area based ISHO algorithm outperforms the existing 3G/WLAN ISHO algorithms.

[1]  Allan C. Rubens,et al.  Remote Authentication Dial In User Service (RADIUS) , 2000, RFC.

[2]  Huseyin Selcuk Ozturk,et al.  Evaluation of Secure 802.1X Port-Based Network Access Authentication Over 802.11 Wireless Local Area Networks , 2003 .

[3]  Charles E. Perkins,et al.  Mobile IPv4 Challenge/Response Extensions (Revised) , 2007, RFC.

[4]  Larry J. Blunk,et al.  PPP Extensible Authentication Protocol (EAP) , 1998, RFC.

[6]  Qian Zhang,et al.  Efficient mobility management for vertical handoff between WWAN and WLAN , 2003, IEEE Commun. Mag..

[7]  Dan Simon,et al.  PPP EAP TLS Authentication Protocol , 1999, RFC.

[8]  N. Asokan,et al.  Authentication and key generation for mobile IP using GSM authentication and roaming , 2001, ICC 2001. IEEE International Conference on Communications. Conference Record (Cat. No.01CH37240).

[9]  Seung-Jae Han,et al.  Integration of 802.11 and third-generation wireless data networks , 2003, IEEE INFOCOM 2003. Twenty-second Annual Joint Conference of the IEEE Computer and Communications Societies (IEEE Cat. No.03CH37428).

[10]  Yu Liu,et al.  The Mobile IP handoff between hybrid networks , 2002, The 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications.

[11]  Chia-Ching Lin,et al.  Design and evaluation of UMTS-WLAN interworking strategies , 2002, Proceedings IEEE 56th Vehicular Technology Conference.

[12]  Enric Mitjana,et al.  Paving the road to systems beyond 3G — The IST BRAIN and MIND projects , 2002, Journal of Communications and Networks.

[13]  L. Salgarelli,et al.  EAP-SKE authentication and key exchange protocol , 2003 .

[14]  Shiao-Li Tsao,et al.  VGSN: a gateway approach to interconnect UMTS/WLAN networks , 2002, The 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications.

[15]  Melbourne Barton,et al.  Mobility management in integrated UMTS/WLAN networks , 2003, IEEE International Conference on Communications, 2003. ICC '03..

[16]  Kalle Ahmavaara,et al.  Interworking architecture between 3GPP and WLAN systems , 2003, IEEE Commun. Mag..

[17]  Charles E. Perkins,et al.  IP Mobility Support for IPv4 , 2002, RFC.

[18]  Apostolis K. Salkintzis,et al.  WLAN-GPRS integration for next-generation mobile data networks , 2002, IEEE Wirel. Commun..

[19]  Victor Fajardo,et al.  Diameter Base Protocol , 2003, RFC.

[20]  Charles E. Perkins,et al.  Mobile IP Network Access Identifier Extension for IPv4 , 2000, RFC.

[21]  Gordon L. Stuber,et al.  Principles of mobile communication (2nd ed.) , 2001 .

[22]  Gordon L. Stüber.  Principles of mobile communication , 1996 .

[23]  Jouni Mikkonen,et al.  Wireless LAN access network architecture for mobile operators , 2001 .

[24]  Charles E. Perkins,et al.  Mobile IP Authentication, Authorization, and Accounting Requirements , 2000, RFC.

[25]  Hannes Hartenstein,et al.  Stochastic Properties of the Random Waypoint Mobility Model , 2004, Wirel. Networks.