A Handoff Using Virtual Channel Scheme for Cognitive Radio Networks
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2015, Vol 3, Issue 8
Abstract
Cognitive radio emerges as an impactful technology that can enhance the radio spectrum utilization and network performance. Spectrum handoff is one of the important feature in cognitive radio network that not only contributes required Qos to primary users but also provide seamless communication for secondary users. Spectrum handoff occurs when the primary user claims the channel occupied by the secondary user, since the secondary users are unlicensed users having no right to access the channel thus secondary user is required to vacate the channel and resume its transmission to the next available idle channel. The process of spectrum handoff however brings it with a notable amount of delay which minimizes the efficiency of network. In this paper we propose a virtual channel approach to optimize the handoff process by reducing the waiting time for secondary user for spectrum handoff and comparing it to existing random channel selection approach. Simulation results claims the validity of our approach, it reduces the waiting time of secondary user and increases the overall capacity of network compared to random channel selection scheme.
Authors and Affiliations
Anuj Thakur, Ratish Kumar
Keywords
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