A Stackelberg Game Spectrum Sharing Scheme in Cognitive Radio-Based Heterogeneous Wireless Sensor Networks

摘要

In this paper, we focus on spectrum sharing in heterogeneous wireless sensor networks (HWSNs) and consider Stackelberg game exploiting the cognitive radio (CR) technology to utilize those resources. In the game, the licensed network controls and prices the improvable spectrum that the wireless sensor networks (WSNs) relay: can purchase and use to serve the attached sensor nodes as well as offload some nodes in licensed network. When on spectrum trading, actor nodes and sensor nodes would try to maximize their data rates, gaining, and expenditures. During the process of the game, the interference coordination functions of the heterogeneous sensor network and CR technology are employed so that the difference of spectrum allocation can be completely used. According to simulation result, we evaluate the impact on throughput performance after implementing proposed game strategy in HWSNs. And we prove that the proposed method can observably improve the capacity of victim licensed nodes with slightly decreasing network's throughput.