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Journal: International Journal of Engineering Sciences & Research Technology (IJESRT) (Vol.5, No. 11)

Publication Date:

Authors : ; ;

Page : 518-522

Keywords : Routing; spectrum dynamics; Transport protocol; cognitive radio; mobile ad hoc network; multi - hop communication .;

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Time and the Constraint are both typically interrelated and lead us to the next level high technological revolution journey where we analyses the Human Automation instead of System Automation. Technological in the View Point cognitive science Information technology will have to make high level of demanding journey; in that aspect we consider the best of the technical revolution in the Social media where we share the thoughts , informational to many more . In cognitive radio networks (CRNs), secondary users (SUs) can flexibly access primary users' (PUs') idle spectrum bands, but such spectrum opportunities are dynamic due to PUs' uncertain activity patterns. In a multi hop CRN consisting of SUs a s relays; such spectrum dynamics will further cause the invalidity of predetermined routes. In this paper, we investigate spectrum - mobility - incurred route - switching problems in both spatial and frequency domains for CRNs, where spatial switching determines which relays and links should be reselected and frequency switching decides which channels ought to be reassigned to the spatial routes. The proposed route - switching scheme not only avoids conflicts with PUs but also mitigates spectrum congestion.

Last modified: 2016-11-25 19:39:32