混合能量供应的认知无线电网络中基于效用的协作频谱租借策略研究
首发时间:2017-05-04
摘要:本文基于具有混合能量供应的认知无线电网络,提出一种新颖的协作频谱租借机制。次用户优先使用从无线射频信号中采集的能量,通过作为协作中继帮助主用户提前结束数据传输,从而获得频谱接入机会。主用户通过优化频谱租借定价以优化通信服务质量、减少能量消耗并获得租借费用,次用户通过优化频谱租借时间来最大化吞吐量、最小化能量消耗和租借费用。运用斯坦科尔伯格博弈对该问题进行建模,并将斯坦科尔伯格均衡作为最优策略。
关键词: 认知无线电网络 频谱租借 斯坦科尔伯格博弈 能量采集 混合能量供应
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Utility-based cooperative spectrum leasing in cognitive radio networks with hybrid energy supplies
Abstract:In this paper, we propose a novel cooperative spectrum leasing scheme for cognitive radio networks with hybrid energy supplies. The secondary user (SU) is a cooperative relay powered largely by harvested energy extracted from the RF signal of the primary user (PU), which results in earlier completion of the primary transmission and the winning of opportunities for secondary transmission. The PU increases its communication quality of service (QoS), decreases energy consumption and obtains pay backs by optimizing the leasing price, while the SU maximizes its throughput, minimizes the energy consumption and fees by optimizing lease time. We formulate this model as a Stackelberg game, and adopt the Stackelberg equilibrium as the optimal strategy.
Keywords: cognitive radio networks spectrum leasing Stackelberg game energy harvesting hybrid energy supplies
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混合能量供应的认知无线电网络中基于效用的协作频谱租借策略研究
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