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Performance of CAC strategies for multimedia traffic in wireless networks

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2 Author(s)
D. Z. Deniz ; Dept. of Electr. & Electron. Eng., Eastern Mediterranean Univ., Northern Cyprus, Turkey ; N. O. Mohamed

Call admission control (CAC) strategies for multimedia traffic in wireless networks is studied. A wireless network cell serving two types of customers; narrowband customers, which require one channel and wideband customers, which require bw≥1 channels is considered. Two CAC strategies; reserve channels strategy (RCS) and threshold strategy (TS) are applied to the wireless cell and their performances are compared. The results show that in most operating conditions, the RCS has a lower blocking probability and probability of handoff call dropping than the TS. Only in the case when the wideband traffic is higher than the narrowband traffic that the weighted probability of handoff call dropping becomes higher for the RCS. Mean server utilization is lower for the threshold CAC than for the reserve channels CAC strategy at most operating conditions.

Published in:

IEEE Journal on Selected Areas in Communications  (Volume:21 ,  Issue: 10 )