PREDICTION BASED CHANNEL-HOPPING ALGORITHM FOR RENDEZVOUS IN COGNITIVE RADIO NETWORKS
Abstract
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Most common works for rendezvous in cognitive radio networks deal only with two user scenarios involving two secondary users and variable primary users and aim at reducing the time-to-rendezvous. A common control channel for the establishment of communication is not considered and hence the work comes under the category of ‘Blind Rendezvous’. Our work deal with multi-user scenario and provides a methodology for the users to find each other in the very first time slot spent for rendezvous or otherwise called the firstattempt- rendezvous. The secondary users make use of the history of past communications to enable them to predict the frequency channel that the user expects the rendezvous user to be. Our approach prevents greedy decision making between the users involved by the use of a cut-off time period for attempting rendezvous. Simulation results show that the time-to-rendezvous (TTR) is greatly reduced upon comparison with other popular rendezvous algorithms.

Authors
Dhananjay Kumar1, A. Magesh2 and U. Mohammed Hussain3
Anna University Chennai, India

Keywords
Cognitive Radio, Rendezvous, Time to Rendezvous, First Attempt Rendezvous, Channel Hopping
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Published By :
ICTACT
Published In :
ICTACT Journal on Communication Technology
( Volume: 3 , Issue: 4 , Pages: 619-625 )
Date of Publication :
December 2012
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107
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