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In this paper, a new spectrum management scheme for CRNs called Voluntary Spectrum Handoff (VSH) is introduced. The two mechanisms proposed under VSH estimate opportune times to initiate unforced spectrum handoff events to facilitate setup and signaling of alternative channels without having communication disruption, which occurs when a secondary user is forced out of an operating spectrum due to...
This special issue aims to consolidate and disseminate the latest developments and advances in the emerging area of multihop cognitive radio networks (CRNs). The five articles selected to be part of this special issue address recent research issues/advances at different layers of the cognitive protocol stack, shedding light on different aspects related to the design of effective multihop CRNs.
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