Demand-Side Relay Spectrum Allocation in Smart Grid Based on Bilateral Auction

Smart Grid needs real-time monitoring of power equipment status and optimization of power distribution. In order to meet the needs of mass communication and data transmission, smart grid needs sufficient spectrum resources to ensure fast and reliable data transmission. However, the limitation of spectrum resources and the interference caused by multisystem coexistence have become the bottleneck of the development of smart grid. This article pointed out the defect of the existing spectrum resources management mode. Based on the Taguchi Quality Assessment Theory, we developed a cost model for a utility company, which used a decoding and forward cooperative relay strategy to transmit downlink horizontal propagation to a data aggregation unit. This article analyzed the bilateral auction process between utility company and licensed user to maximize social welfare, and determined the optimal spectrum transaction to improve the utilization of spectrum resources.