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Probabilistic Call Admission Control Algorithm for WLAN in a Heterogeneous Wireless Environment



Nicolas Chevrollier, David W. Griffith, Nada T. Golmie, SuKyoung Lee, Kyungsoo Kim, Hong Kunho, YoonHyuk Kim


In an integrated WLAN and cellular network, if all mobile users whose connections originate in the cellular network migrate to the WLAN whenever they enter the double coverage area, the WLAN will be severely congested and its users will suffer from performance degradation. Therefore, we propose a Call Admission Control (CAC) algorithm that allows the WLAN to limit downward Vertical Handovers VHOs) from the cellular network to reduce unnecessary VHO processing. Numerical and simulation results demonstrate that our CAC scheme reduces the unnecessary VHO processing while keeping the DVHO blocking rate within acceptable limits and maintaining reasonable throughput in the WLAN.
IEEE Transactions on Wireless Communications


Call Admission Control, DVHO, heterogeneous wireless networks, UVHO


Chevrollier, N. , Griffith, D. , Golmie, N. , Lee, S. , Kim, K. , Kunho, H. and Kim, Y. (2009), Probabilistic Call Admission Control Algorithm for WLAN in a Heterogeneous Wireless Environment, IEEE Transactions on Wireless Communications, [online], (Accessed May 24, 2024)


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Created April 29, 2009, Updated October 12, 2021