發(fā)布時(shí)間：2018-08-07 09:12

【摘要】：超蜂窩架構(gòu)通過控制覆蓋與業(yè)務(wù)覆蓋的適度分離,使得業(yè)務(wù)基站休眠成為可能,實(shí)現(xiàn)按需調(diào)節(jié)業(yè)務(wù)覆蓋,提升網(wǎng)絡(luò)能效.但業(yè)務(wù)基站休眠會對業(yè)務(wù)延時(shí)帶來潛在影響.為此,定量分析基站休眠機(jī)制對系統(tǒng)能效、業(yè)務(wù)延時(shí)的影響,并權(quán)衡二者給出最優(yōu)休眠機(jī)制成為重要的研究課題.本文總結(jié)了筆者課題組針對此問題的一系列研究成果:針對業(yè)務(wù)基站休眠場景,借助休假排隊(duì)模型給出了系統(tǒng)平均功率與業(yè)務(wù)延時(shí)的閉式表達(dá)式,并總結(jié)二者存在折中的條件;進(jìn)一步在給定延時(shí)約束下給出能效最優(yōu)的基站休眠策略,由此得到最優(yōu)能效延時(shí)折中關(guān)系,同時(shí)分析了探測能耗對能效延時(shí)折中關(guān)系的影響.同時(shí),在突發(fā)業(yè)務(wù)到達(dá)模型下,給出基站休眠機(jī)制設(shè)計(jì),并將其與功率匹配機(jī)制相結(jié)合;基于部分可觀測的Markov決策過程(partially observable Markov decision process,POMDP),給出突發(fā)業(yè)務(wù)到達(dá)下的最優(yōu)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.
【作者單位】： 清華大學(xué)電子工程系;清華大學(xué)信息科學(xué)與技術(shù)國家實(shí)驗(yàn)室(籌);
【基金】：國家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(973)(批準(zhǔn)號:2012CB316000) 國家自然科學(xué)基金(批準(zhǔn)號:61461136004,61571265,91638204)資助項(xiàng)目
【分類號】：TN929.5

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本文編號：2169558