Distributed Power Control for Energy Saving in Device-to-Device Communication Underlaying Cellular Network from Game Perspective

Rui Tang, Jiaojiao Dong, J. Liu, Zhengcang Zhu, Ji-hong Zhao, Hua Qu
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Abstract

Device-to-Device (D2D) communication is proposed as a promising remedy to improve the quality-of-service (QoS) for communicating user equipments (UEs) in proximity by reusing the spectrum of cellular system. Meanwhile, energy conservation receives great attention for D2D UEs owing to the battery-driven feature and undesirable cross-tier interference. So, we leverage about performance tradeoff and attempt to minimize the power consumption for D2D communication via distributed power control (DPC). We apply non-cooperative game with pricing among D2D players in their pursuit of QoS requirements. Under any pricing, the existence and uniqueness of Nash Equilibrium (NE) are verified, and the convergence of the power updating is also proved. Besides, we adjust the price value to maintain the QoS requirement for primary cellular UE. Specifically, a novel user removal scheme is introduced to softly remove the players in unfavorable condition by setting a low QoS target when feasibility can't be guaranteed. Finally, we elucidate the efficacy of our scheme in terms of aggregate power consumption and system capacity (SC), i.e., The number of admitted D-links, which shows the necessity and superiority of our performance tradeoff.
基于博弈视角的蜂窝网络设备间通信节能分布式电源控制
设备到设备(D2D)通信是一种很有前途的补救措施,通过重用蜂窝系统的频谱来提高近距离通信用户设备(ue)的服务质量(QoS)。同时,由于电池驱动的特性和不良的跨层干扰,D2D ue的节能问题备受关注。因此,我们利用性能权衡,并尝试通过分布式电源控制(DPC)将D2D通信的功耗降至最低。在D2D玩家对QoS需求的追求中,我们采用了带有定价的非合作博弈。在任意定价条件下,验证了纳什均衡的存在唯一性,并证明了幂更新的收敛性。此外,我们调整了价格值,以保持初级蜂窝终端的QoS要求。具体来说,提出了一种新的用户移除方案,在无法保证可行性的情况下,通过设定较低的QoS目标,对处于不利状态的玩家进行软移除。最后,我们从总功耗和系统容量(SC)(即允许的d链路的数量)方面阐明了我们的方案的有效性,这表明了我们的性能权衡的必要性和优越性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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