Abstract
The integration of CDMA cellular network and wireless LAN (WLAN) has drawn much attention recently. In this integrated architecture, it is required to support a vertical handoff from the WLAN to the CDMA system when a user moves out of the WLAN coverage area and vice versa. We propose a context based handoff procedure and the corresponding mechanism from WLAN to CDMA system, and vice versa, based on wireless channel assignment. In other words, this paper focuses on the handoff decision which uses context information such as dropping probability, blocking probability, GOS, the number of handoff attempts and velocity. As a decision criterion, velocity threshold is determined to optimize the system performance. The optimal velocity threshold is adjusted to assign available channels to the mobile stations with various handoff strategies. The proposed scheme is validated using computer simulation. Also, the overflow traffic with take-back technique is evaluated and compared with non-overflow traffics in terms of GOS.
This work was supported by Korea Science and Engineering Foundation. (KOSEF-R01-2004-000-10755-0)
Access provided by Autonomous University of Puebla. Download to read the full chapter text
Chapter PDF
Similar content being viewed by others
References
Buddhikot, M.M., Chandranmenon, G., et al.: Design and Implementation of a WLAN/CDMA 2000 Interworking Architecture. IEEE Communications Magazine (November 2003)
Balasubramaniam, S., Indulska, J.: Vertical Handover Supporting Pervasive Computing in Future Wireless Networks. Computer Communication Journal (Special Issue on 4G/Future Wireless networks) 27/8, 708–719 (2003)
Lagrange, X., Godlewski, P.: Performance of a Hierarchical Cellular Network with Mobility- dependent handover strategies. In: Proc. IEEE VTC 1996 (1996)
Sung, C.W., Wong, W.S.: User Speed Estimation and Dynamic Channel Allocation in Hierarchical Cellular System. In: Proc. IEEE VTC 1994, pp. 91–95 (1994)
Rappaport, S., Hu, L.R.: Microcellular Communications Systems with Hierarchical Macrocell Overlays: Traffic Performance Models and Analysis. Proc. IEEE 82 (September 1994)
Yeung, K.L., Nanda, S.: Channel Management in Microcell/Macrocell Cellular Radio Systems. IEEE Transactions on Vehicular Technologies 45(4), 601–612 (1996)
Kim, J.-S., Chung, W.-G., Choi, H.-J., Cheong, J.-M., Park, S.: Determining Velocity Threshold for Handoff Control in Hierachically Structured Networks. In: PIMRC (1998)
Fischer, W., Meier-Hellstern, K.S.: The Markov Modulated Poisson Process (MMPP) cookbook. Performance Evaluations 18, 149–171 (1992)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2005 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Kim, JS., Chung, MY., Shin, DR. (2005). A Vertical Handoff Algorithm Based on Context Information in CDMA-WLAN Integrated Networks. In: Gervasi, O., et al. Computational Science and Its Applications – ICCSA 2005. ICCSA 2005. Lecture Notes in Computer Science, vol 3480. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11424758_37
Download citation
DOI: https://doi.org/10.1007/11424758_37
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-25860-5
Online ISBN: 978-3-540-32043-2
eBook Packages: Computer ScienceComputer Science (R0)