Pricing Based QoS Provisioning Spectrum Management Strategy in Spectrum Underlay Multi-channel Access Cognitive Radio Networks
Fan Wang, Feng Shao-dong, Yao Fu-qiang, Zhao Hang-sheng · International Journal of Digital Content Technology and its Applications · 2011
Focusing on the spectrum management issue in spectrum underlay multi-channel access scenario in cognitive radio network, we implement the spectrum management as a power and channel allocation problem with respect of interference-free to Primary Users (PU) and QoS provisioning to Cognitive Radios (CR). We model the problem as a non-cooperative game and introduce a price function to every CR in order to forward the allocation results achieving Pareto optimum. Also, we prove the existence of Nash Equilibrium of the game and propose an on-demand asynchronous distributed pricing iterative algorithm to implement it. Compared with other price based strategy in existing literatures, our proposed strategy and algorithm can improve the Cognitive Radio Network (CRN) efficient throughput and improve the QoS provisioning rate for CRs by at least 20% and at most 60% in specific simulation scenario of this paper.