Novel call admission control algorithm for heterogenous wireless networks
一种新型的异构无线网络呼叫接纳控制算法研究

CAC between heterogeneous wireless networks, such as an integrated CDMA2000 cellular network and a WLAN, play an important role to utilize the system resources in a more efficient way.This paper proposed that the preference to the WLAN was determined based on the traffic load in the WLAN and the velocity of the cellular mobile users.Therefore, it proposed a probabilistic CAC algorithm that allowed the WLAN to limit VHOs from the cellular network to reduce unnecessary VHO processing.It derived the expressions of new call blocking rate and DVHO blocking rate.Simulation results demonstrate that our CAC scheme reduces the unnecessary VHO processing while keeping the DVHO blocking rate within acceptable limits, maintaining reasonable through put and improves the overall performance of the system.