Assistant Professor/Department of CSE

Abstract — Mobility is most important feature in wireless cellular communication system. Continuous service of communication can be achieved by supporting handoff. To solve the problem of spectrum scarcity and inefficient usage of the spectrum to handle handoffs efficiently a solution is proposed in Cognitive Radio networks. In CR networks unused spectrum spaces is given to secondary users and provide efficient usage of spectrum, but problems arises with unstable nature of spectrum. A novel approach is introduced to use unstable spectrum, where a scheme to support for mobility management and inter cell channel allocation is developed for various handoff events in Cognitive Radio networks. Here, for reducing switching latency a proper handoff mechanism is selected and Inter-cell channel allocation improves the mobility management performance by efficiently allocating the channel and multiple cells will able share the spectrum resources. The results show that the scheme improves the performance of handling handoffs compare to conventional schemes