Abstract: Dynamic spectrum sharing introduces intra-frequency interferences and security problems, while traditional static spectrum sharing is facing the issue of low spectrum utilization rate. To introduce an interference-free, secure and efficient spectrum sharing strategy,a newsboy model applied to static spectrum sharing strategy is proposed for multi-buyer systems. Since the newsboy strategy considers the service demand as a dynamic procedure, the leasing strategy has to be adjusted periodically. Within one leasing cycle,the theoretical analysis shows how the newsboy strategy is used. The simulation results present the exact values of the optimal leasing cycle,the optimal requested spectrum quantity,and the optimal user service price coefficient under the premise of simulation. Compared with the traditional static spectrum sharing strategy,the newsboy strategy can achieve higher system profit and spectrum efficiency without introducing additional issues.

Key words: newsboy model, spectrum sharing strategy, spectrum quantity, leasing cycle, multi-buyer system