摘要
频谱地图能向用户提供频谱信息,快速实现频谱接入。针对异构网络中主用户的活动性对次用户购买频谱积极性的影响,在频谱地图的协助下次用户获得主用户的活动概率,并将次用户,频谱运营商构建成三阶段Stackelberg博弈模型,提出了价格补偿方案,实现动态的频谱接入。仿真结果表明,价格补偿方案能有效弥补次用户因信道条件恶化而造成的损失。同时,主用户的活动性会影响次用户的经济行为,运营商根据用户购买需求的变化动态调整频谱售价,使双方收益均达到纳什均衡。最终使得次用户,运营商和频谱授权用户三方同时获得最佳收益。
Spectrum map could provide the users with spectrum information and quickly realize dynamic spectrum access. Considering the impact of primary-user's activities on secondary-user's interest in spectrum trade in a heterogeneous network, the secondary users, with the help of spectrum map, could acquire activity probability of the primary users with spectrum map. The interaction of between the users and spectrum operators is investigated with a three-stage Stackelberg game, and a price compensation scheme (PCS) proposed, thus to realize dynamic spectrum access. Simulation indicates that the PCS could efficiently remedy the secondary-user's loss resulted from the worsened channel condition. Meanwhile, the primary-user's activities could exercise an impact on the economic behavior of secondary users. Operators could dynamically adjust spectrum price in accordance with the secondary user's demands, and thus both of them could reach Nash Equilibrium (NE). Finally, the secondary users, operators and primary users are guaranteed to achieve an optimal profit.
出处
《通信技术》
2016年第2期168-173,共6页
Communications Technology
基金
国家自然科学基金(No.61301161
No.61471395)
江苏省自然科学基金(No.BK20141070)~~
关键词
频谱地图
动态频谱接入
博弈论
纳什均衡
spectrum map
dynamic spectrum access
game theory
Nash Equilibrium