International Journal of Advanced Research in Computer Science and Software Engineering (IJARCSSE)
One of the most interesting 3G networks feature is their integration with the 2G networks. It provides seamless End to-End services. Current widely deployed 2G and 3G networks provide enabling interoperability. These mechanisms include Inter RAT idle mode reselection. Inter RAT dedicated mode reselection is used for PS (Packet Switching) services. The WLAN coverage on one hand provides an extra coverage in the low signal strength region. The authors perform the channel scanning with in the WLAN coverage area. To reduce the handover failure due to scanning delay.