In this paper, we will investigate the spectrum handoff schemes for the cognitive radio
networks. Spectrum handoff occurs when the primary users appear and the secondary users …

In this study, a non‐preemptive M/G/1 queueing model of a spectrum handoff scheme for
cognitive wireless networks is proposed. Because spectrum handoff gives secondary users …

To model contexts and provide inference mechanism in Semantic Web of Things (SWoT), a
generic and extensible meta-context ontology model (MCOnt) is proposed to model the …

Spectrum handoff plays an important role in spectrum management as it is the process of
seamlessly shifting the on-going transmission of a secondary user (SU) to a free channel …

Increase in number of commodity devices using network connection raised the spectrum
demand largely. The present static spectrum allocation policy gave birth to the so called …

For the discontinuous occupancy of primary users in cognitive radio networks (CRN), the
time-varying of spectrum holes becomes more and more highlighted. In the dynamic …

为了提高认知无线电网络(CRN) 的利用率和吞吐量性能, 提出了一种新的主用户优先的自适应
频谱切换机制. **调主用户的优先地位, 并考虑主用户到达率对次用户的通信影响和限制次用户 …

Increase in number of commodity devices using network connection raised the spectrum
demand largely. The present static spectrum allocation policy gave birth to the so called …

**年來興起的感知無線電開啟許多新的無線通訊可能性, 一般認為將是下一代無線行動網路的新
技術典範. 感知無線電技術之所以被廣泛的研究是因為其具有偵測周圍環境無線通訊資源現況 …