Computer Science ›› 2014, Vol. 41 ›› Issue (8): 169-171.doi: 10.11896/j.issn.1002-137X.2014.08.037

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Spectrum Handoff Based on Jointly Considering Channel Switching Idle and Switching Probability

WU Jun-sheng and LI Xue-mei   

  • Online:2018-11-14 Published:2018-11-14

Abstract: In order to reduce delay time of spectrum handoff and to improve performance of the spectrum handoff,this paper proposed a novel spectrum handoff method of cognitive network based on jointly considering channel switching idle and switching probability.Channel scheduling not only considers the channel idle probability when switching occurs, but also considers the probability that switching no longer occur when using the channel.The performance of the method was tested through the simulation.The results show that compared with other switching frequency spectrum method,this method can not only obtain minimum delay of,but also significantly decrease the handoff times compared with the traditional method,so it can provide high-quality service for users.

Key words: Spectrum handoff,Channel sensing sequencing,Handoff times,Handoff delay

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