标题：Power Rationing for Tradeoff Between Energy Consumption and Profit in Multimedia Heterogeneous Networks
作者：Liu, Lei; Xu, Song; Cui, Lizhen; Min, Geyong; Wang, Haozhe
作者机构：[Liu, Lei; Cui, Lizhen] Shandong Univ, Sch Software, Jinan 250101, Shandong, Peoples R China.; [Xu, Song] Shandong Univ, Sch Comp Sci & Technol, Jin 更多
通讯作者：Cui, LZ;Xu, S;Xu, Song
通讯作者地址：[Cui, LZ]Shandong Univ, Sch Software, Jinan 250101, Shandong, Peoples R China;[Xu, S]Shandong Univ, Sch Comp Sci & Technol, Jinan 250101, Shandong, Pe 更多
来源：IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
关键词：Power control; profit maximization; heterogeneous networks; multimedia; applications; game theory; Tullock contests
摘要：With the explosive growth of multimedia applications, heterogeneous cellular networks (HetNets) are widely deployed to meet the increasingly impressing demands on communication capacity. However, supporting the massive real-time traffic generated by always-on multimedia applications in HetNets causes enormous energy consumptions. The tradeoff between energy consumptions and profits of service providers while maintaining satisfied quality-of-service (QoS) has become a significant objective. To this end, this paper proposes a novel framework of power rationing in HetNets to achieve maximal profit and guaranteed service performance. A dynamic power rationing strategy that employs Tullock contest is developed to model the power control of multiple cells into a game and solve the contradiction of profits and energy consumption as the tradeoff between QoS and cost. Two principal challenges in gaming, incomplete information, and the curse of dimensionality are resolved by the designed virtual repeated game that adopts the Monte-Carlo method and particle swarm optimization (PSO) to obtain the Nash equilibrium. The equilibrium of power rationing balances the energy consumptions and profits of cells, which ensures the optimal solution for the multimedia service providers and HetNets operators. The experimental results demonstrate that the developed model can serve as an efficient tool for power rationing in multimedia HetNets.