A New Scheme for Network Selection in Heterogeneous Wireless Network using Fuzzy Logic

Ensuring seamless and reliable switching across different constituent technologies is the basic requirement of heterogeneous wireless networks. IEEE 802.21 standard is recommended for 4G networks for coordinating among different mobile network for better services. Still, there exists a scope of further improving its performance by introducing the fuzzy logic concepts in it. The present work aims in this direction where a fuzzy interface system is designed using four different parameters viz. speed of mobile terminal, available bandwidth, received signal strength and number of users. The simulation result show that the number of vertical handoffs in the proposed technique reduced by 27% as compared to the existing fuzzy approach and by 42% as compared to the classical approach.