Thursday, April 15, 2010

new handoff mechanism

The rapid progress of wireless applications results in the scarcity of radio resources and demands higher efficiency of radio resource management mechanisms. As a big breakthrough in improving the utilization of radio resources, cognitive radio cheap evening dresses techniques has been one important research topic in wireless networks. However, it needs custom made prom dresses deep-research in a variety of areas, among which, spectrum handoff algorithm and protocol design in cognitive radio network is a widely-discussed key technique.To deal with the mobility of spectrum used by cognitive users in cognitive radio network, we need a new handoff mechanism, we called lace wedding dresses spectrum handoff, which enable cognitive users transferring connection among different 12hot cheap prom dresses spectrums. This thesis carries out a deep-research in spectrum handoff algorithms and corresponding protocols under the context of cognitive networks. Through analyzing the discount wedding dresses characteristics of cognitive radio and spectrum handoff, the spectrum handoff algorithms and protocols which adapt them well to the cognitive radio environment are proposed. Besides, their corresponding simulation performances are also illustrated in this thesis.
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