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The convergence of various wireless access technologies has always been a difficult assignment because of the fact that they have emerged independently. Future vision of wireless world is an integrated network of different wireless access technologies with improved system resources utilization anywhere, anytime. WLANs are expected to complement cellular networks such as 2G or 3G in near future. Cellular networks facilitate users with high mobility but less data rate (2 Mbps) as compared to WLAN systems having higher data rate (54 Mbps) but less mobility (100m). From the users' standpoint, the convergence of WLAN and cellular systems together will help to have combined benefits from both technologies.
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