超蜂窝网络能效延时理论关系及最优基站休眠控制
发布时间:2018-08-07 09:12
【摘要】:超蜂窝架构通过控制覆盖与业务覆盖的适度分离,使得业务基站休眠成为可能,实现按需调节业务覆盖,提升网络能效.但业务基站休眠会对业务延时带来潜在影响.为此,定量分析基站休眠机制对系统能效、业务延时的影响,并权衡二者给出最优休眠机制成为重要的研究课题.本文总结了笔者课题组针对此问题的一系列研究成果:针对业务基站休眠场景,借助休假排队模型给出了系统平均功率与业务延时的闭式表达式,并总结二者存在折中的条件;进一步在给定延时约束下给出能效最优的基站休眠策略,由此得到最优能效延时折中关系,同时分析了探测能耗对能效延时折中关系的影响.同时,在突发业务到达模型下,给出基站休眠机制设计,并将其与功率匹配机制相结合;基于部分可观测的Markov决策过程(partially observable Markov decision process,POMDP),给出突发业务到达下的最优基站休眠策略.
[Abstract]:By separating the control coverage from the service coverage appropriately, the super-cellular architecture makes it possible for the service base stations to sleep, realize the on-demand adjustment of the service coverage, and improve the network energy efficiency. But the service base station dormancy will bring the potential influence to the service delay. Therefore, it is an important research topic to quantitatively analyze the effect of base station sleep mechanism on system energy efficiency and service delay, and to weigh the optimal sleep mechanism between them. In this paper, a series of research results on this problem are summarized: for the sleep scenario of service base station, the closed expressions of system average power and service delay are given with the help of vacation queuing model, and the conditions of compromise between them are summarized. Furthermore, the optimal base station dormancy strategy for energy efficiency is given under given delay constraints, and the optimal energy efficiency delay eclectic relationship is obtained, and the influence of detection energy consumption on the energy efficiency delay compromise is analyzed at the same time. At the same time, under the burst service arrival model, the base station sleep mechanism is designed and combined with the power matching mechanism, and based on the partially observable Markov decision process (partially observable Markov decision process POMDP, the optimal base station sleep strategy under the burst service arrival is given.
【作者单位】: 清华大学电子工程系;清华大学信息科学与技术国家实验室(筹);
【基金】:国家重点基础研究发展计划(973)(批准号:2012CB316000) 国家自然科学基金(批准号:61461136004,61571265,91638204)资助项目
【分类号】:TN929.5
[Abstract]:By separating the control coverage from the service coverage appropriately, the super-cellular architecture makes it possible for the service base stations to sleep, realize the on-demand adjustment of the service coverage, and improve the network energy efficiency. But the service base station dormancy will bring the potential influence to the service delay. Therefore, it is an important research topic to quantitatively analyze the effect of base station sleep mechanism on system energy efficiency and service delay, and to weigh the optimal sleep mechanism between them. In this paper, a series of research results on this problem are summarized: for the sleep scenario of service base station, the closed expressions of system average power and service delay are given with the help of vacation queuing model, and the conditions of compromise between them are summarized. Furthermore, the optimal base station dormancy strategy for energy efficiency is given under given delay constraints, and the optimal energy efficiency delay eclectic relationship is obtained, and the influence of detection energy consumption on the energy efficiency delay compromise is analyzed at the same time. At the same time, under the burst service arrival model, the base station sleep mechanism is designed and combined with the power matching mechanism, and based on the partially observable Markov decision process (partially observable Markov decision process POMDP, the optimal base station sleep strategy under the burst service arrival is given.
【作者单位】: 清华大学电子工程系;清华大学信息科学与技术国家实验室(筹);
【基金】:国家重点基础研究发展计划(973)(批准号:2012CB316000) 国家自然科学基金(批准号:61461136004,61571265,91638204)资助项目
【分类号】:TN929.5
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