Opportunistic and Negotiated Situations

Spectrumhandoffisanindispensablecomponentincognitiveradionetworkstoprovideresilientserviceforthesecondaryusers.Inthispaper,weexplorethespectrumhandoffprocedureandthenproposefourmetricstocharacterizebothshort-termandlong-termspectrumhandoffperformance:linkmaintenanceprobability,thenumbero