Ruijun Feng

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The cognitive network, which is based on the theory of cognitive radio, is undergoing rapid growth. But the research on QoS provisioning for cognitive heterogeneous networks is scarce. In this paper, an end-to-end QoS provisioning model is proposed withthe cognitive process. QoS mapping of different cognitive QoS domains in SLSs and the related resource(More)
Cognitive wireless networks are potential and competitive candidates for future self-configuring, self-optimizing and self-healing heterogeneous networks. This paper presents an architecture for future cognitive heterogeneous networks by introducing intelligent nodes. We further elaborate on the fundamental and implementation challenges which need to be(More)
Generally handover can be divided into two kinds, hard handover and soft handover, according to the connection situation with the base station. In the overlapped coverage area, while hard handover will cause more packet lost and handover cost, and soft handover can provide seamless handover performance. The soft handover can be implemented either in link(More)
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