PROJECT TITLE :
Session-Based Cooperation in Cognitive Radio Networks: A Network-Level Approach - 2018
Currently, the cooperation-based mostly spectrum access in cognitive radio networks (CRNs) is implemented via cooperative communications primarily based on link-level frame-based mostly cooperative (LLC) approach, where individual secondary users (SUs) independently serve as relays for primary users (PUs) in order to gain spectrum access opportunities. Unfortunately, this LLC approach cannot totally exploit spectrum access opportunities to boost the throughput of CRNs and fails to encourage PUs to hitch the spectrum sharing processes. To address these challenges, we tend to propose a network-level session-based cooperative (NLC) approach, where SUs are grouped together to cooperate with PUs session by session, rather than frame by frame, for spectrum access opportunities of the corresponding cluster. To articulate our NLC approach, we have a tendency to additional develop an NLC theme below a cognitive capability harvesting network architecture. We formulate the cooperative mechanism style as a cross-layer optimization problem with constraints on primary session choice, flow routing and link scheduling. Through intensive simulations, we tend to demonstrate the effectiveness of the proposed NLC approach.
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