本文選題：異構(gòu)網(wǎng)絡(luò) + 功率控制��； 參考：《電子科技大學(xué)》2014年碩士論文

【摘要】：隨著移動互聯(lián)網(wǎng)的飛速發(fā)展,移動蜂窩網(wǎng)絡(luò)的數(shù)據(jù)業(yè)務(wù)呈現(xiàn)出爆炸式增長。為了應(yīng)對頻譜資源有限和移動數(shù)據(jù)流量井噴式增長帶來的問題,層疊覆蓋式的異構(gòu)網(wǎng)絡(luò)(HetNet)應(yīng)運而生。這種架構(gòu)可以有效解決現(xiàn)今移動蜂窩網(wǎng)絡(luò)的覆蓋和容量難題。各種小型基站技術(shù)的誕生和新的組網(wǎng)模式更是為運營商提供了低成本、可擴(kuò)展和可盈利的無線移動蜂窩網(wǎng)絡(luò)。小型基站指代的是包括微基站、微微基站和毫微微基站在內(nèi)的一類體積重量小、發(fā)射功率低、傳輸靈活和熱點覆蓋的基站。毫微微基站(Femto Base Station,FBS)又名家庭基站,作為解決室內(nèi)高業(yè)務(wù)量需求而提出的用于第3代通信系統(tǒng)的技術(shù),得到學(xué)術(shù)界廣泛的研究。毫微微小區(qū)(femto cell)由于其較為成熟的技術(shù)優(yōu)勢,率先得到大規(guī)模部署。其發(fā)展如今,已經(jīng)不限于室內(nèi)覆蓋,對熱點地區(qū)、企業(yè)客戶甚至城區(qū)網(wǎng)絡(luò)的接入和吞吐量的提升都有涉及。但是由于毫微微基站與宏基站共享頻譜,其在組網(wǎng),如干擾、切換和維護(hù)等方面仍然存在許多不穩(wěn)定和不確定技術(shù)問題。毫微微基站在部署上具有隨機(jī)性,更多的時候用于補熱點和補盲點。如果大規(guī)模部署,站點和設(shè)備的維護(hù)面臨風(fēng)險。其與宏基站共存的異構(gòu)網(wǎng)絡(luò)結(jié)構(gòu)下的干擾協(xié)調(diào)和功率控制問題尚需深入研究。另一方面,伴隨著移動蜂窩通信高增長業(yè)務(wù),高能量消耗成本和高二氧化碳排放量,也給移動蜂窩通信技術(shù)的發(fā)展帶來了壓力。當(dāng)今世界,綠色通信的主題被大范圍的討論起來,綠色環(huán)保,節(jié)能減排的理念不斷地被強(qiáng)調(diào)。能量效率已經(jīng)成為了未來綠色節(jié)能通信的設(shè)計準(zhǔn)則。在一個典型的蜂窩網(wǎng)絡(luò)中,基站端的能耗占據(jù)整個網(wǎng)絡(luò)能耗的60%-80%。為了提高整個蜂窩通信網(wǎng)絡(luò)的能量利用效率,提高基站端的能量效率顯得更為重要。本文針對無線異構(gòu)蜂窩網(wǎng)絡(luò)的綠色通信需求,研究了宏基站與毫微微基站層疊覆蓋的兩層網(wǎng)絡(luò)下的系統(tǒng)能效優(yōu)化問題。在考慮能量效率和用戶信號質(zhì)量的情況下,一方面可以通過調(diào)整基站的發(fā)射功率來調(diào)整整個系統(tǒng)的能量效率,另一方面,在系統(tǒng)總功率固定的情況下,調(diào)整用戶的接入方式,以最大化系統(tǒng)吞吐量為目標(biāo)也能提高系統(tǒng)能效。基于以上考慮,本文的主要成果如下:1)根據(jù)femto網(wǎng)絡(luò)的具體特點,通過分析系統(tǒng)能效的梯度公式,提出了分布式有交互的能效優(yōu)先的功率控制的具體實現(xiàn)方法,基于分布式梯度值交互,能有效地追蹤系統(tǒng)能效隨著功率值改變的變化情況,交互的信息量少,有效提升了系統(tǒng)能效,彌補對能效優(yōu)先的功率控制研究的不足。2)運用非合作博弈理論的思想,宏基站和femto基站分別自私地解決自身的能效最優(yōu)問題,把其他發(fā)送基站的干擾作為噪聲求解一個能效優(yōu)先的注水問題,根據(jù)其他基站的功率帶來的干擾做出自身的最優(yōu)功率分配。各個發(fā)送基站采用改進(jìn)的能效優(yōu)先的注水算法尋找最有利自身能效提高的功率分配策略,多次更新迭代功率配置以達(dá)到博弈均衡。仿真結(jié)果顯示,本算法不僅提高吞吐量還兼顧到系統(tǒng)能量效率的提高,真正實現(xiàn)能效優(yōu)先的通信。3)研究混合接入模式下,基于打包拍賣模型的femto網(wǎng)絡(luò)的用戶接入機(jī)制,設(shè)計出讓femto簽約用戶和運營商經(jīng)濟(jì)雙贏的接入架構(gòu)。把混合接入的過程建立成一個前向多物品拍賣過程,并且采用打包捆綁拍賣的思想,即一個網(wǎng)絡(luò)運營商(WSP)把一個或者多個希望接入femtocell的用戶打包拍賣接入到贏家femtocell中。通過引入混合接入拍賣,宏用戶的吞吐量得到了顯著提高。與單物品拍賣相比,多物品拍賣對WSP來說更加有利。因為多物品拍賣更加靈活并且增加了競拍價格的多樣性。使得更多的FBS可以參與到競拍的過程中來,通過引入競拍對手,最終拍賣的價格更加有利于WSP。本文通過分析建立系統(tǒng)能效模型,設(shè)計了基于凸優(yōu)化理論、博弈及拍賣理論的多種功率控制和接入控制機(jī)制,有效地解決了macro-femto網(wǎng)絡(luò)能效優(yōu)先的功率控制和用戶接入問題,為能效優(yōu)先的功率控制和用戶接入提供了一些新思路和新方法。
[Abstract]:With the rapid development of mobile Internet, the data services of mobile cellular networks have shown an explosive growth. In order to cope with the problems of limited spectrum resources and mobile data flow blowout growth, cascaded heterogeneous networks (HetNet) emerge as the times require. This architecture can effectively solve the coverage and capacity of mobile cellular networks. The birth of small base station technology and the new networking model provide operators with low-cost, scalable and profitable wireless mobile cellular networks. Small base stations refer to small base stations, micro base stations and micro base stations, which are small in weight, low in transmission power, flexible in transmission and hot coverage. The base station. Femto Base Station (FBS), also known as the home base station, has been widely studied in the academic circle as a technology used to solve the high service demand in the room. The micro cell (femto cell) is the first to be deployed on a large scale because of its mature technical advantage. The development of the micro cell (femto cell) is now not limited. Indoor coverage is involved in hot spots, enterprise customers and even urban network access and throughput enhancement. However, there are still many unstable and uncertain technical problems in networking, such as interference, switching and maintenance, due to the sharing of spectrum between micro base stations and macro base stations. More time is used to patch hot spots and fill blind spots. If large-scale deployment, site and equipment maintenance is at risk. Interference coordination and power control in heterogeneous network structure with macro base stations still need to be studied. On the other hand, high energy consumption costs and high carbon dioxide are associated with mobile cellular communications. Emissions also bring pressure to the development of mobile cellular communication technology. Today, the theme of green communication is discussed in a wide range. The concept of green environmental protection, energy saving and emission reduction is constantly emphasized. Energy efficiency has become a design criterion for future green energy saving communication. In a typical cellular network, the energy consumption of base station ends In order to improve the energy efficiency of the entire cellular communication network and improve the energy efficiency of the base station, the energy efficiency of the entire cellular communication network is more important. In this paper, the system energy efficiency optimization problem of the two layer network covered by the Acer station and the micro micro base station is studied in this paper. The problem of the system efficiency optimization under the two layer network covered by the wireless heterogeneous cellular network is studied. Considering the energy efficiency and the quality of the user signal, one aspect can adjust the energy efficiency of the whole system by adjusting the transmission power of the base station. On the other hand, in the case of fixed total power of the system, the user's access mode can be adjusted to maximize the system throughput. Based on the above consideration, the system energy efficiency can be improved. The main achievements of this paper are as follows: 1) according to the specific characteristics of femto network, through the analysis of the gradient formula of system energy efficiency, a distributed and interactive energy efficiency priority power control method is proposed. Based on the distributed gradient interaction, the system can effectively track the changes of the energy efficiency with the change of the power value, and the amount of information is less interactive. Effectively improving the energy efficiency of the system, making up for the insufficient.2 of the power control research for energy efficiency priority. Using the idea of non cooperative game theory, the Acer station and the femto base station respectively solve their own energy efficiency optimal problem respectively, and solve the interference of other sending base stations as noise to solve an energy efficiency priority water injection problem, according to the work of other base stations. Each transmission base station uses an improved energy efficiency priority water injection algorithm to find the best power allocation strategy which is most favorable to its own energy efficiency, and updates the iterative power configuration to achieve the game equilibrium. The simulation results show that the algorithm does not only improve the throughput but also takes into account the system energy efficiency. To improve, truly realize the energy efficiency priority communication.3), study the user access mechanism of the femto network based on the packaged auction model under the mixed access mode, design the access architecture that assigns both the femto subscribers and the operators' economy, and establish the mixed access process as a forward multi item auction process, and use bundled bundles. The idea of selling is that a network operator (WSP) connects one or more users who want to access the femtocell to the winner's femtocell. By introducing a hybrid access auction, the macro user's throughput has been significantly improved. Compared to the single item auction, the multi item auction is more favorable to the WSP. Flexibly and increase the diversity of bidding price, so that more FBS can participate in the process of bidding. By introducing competitors, the price of the final auction is more beneficial to WSP.. This paper designs a variety of power control and access control based on the theory of convex optimization, game and auction theory by analyzing the system energy efficiency model. The mechanism has effectively solved the power control and user access problem of energy efficiency priority in macro-femto network, and provides some new ideas and new methods for energy efficiency priority power control and user access.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN929.5
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本文編號：2062542