本文選題：異構(gòu)融合網(wǎng)絡(luò)　切入點(diǎn)：能量效率　出處：《西安電子科技大學(xué)》2014年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：隨著移動(dòng)互聯(lián)網(wǎng)的普及,為了解決移動(dòng)信息業(yè)務(wù)數(shù)據(jù)量快速增長(zhǎng)與無(wú)線(xiàn)網(wǎng)絡(luò)傳輸容量受限之間的矛盾,網(wǎng)絡(luò)融合技術(shù)作為一種有效途徑,受到越來(lái)越多的關(guān)注與研究。此外,從綠色通信的角度,能量效率已經(jīng)成為諸多無(wú)線(xiàn)網(wǎng)絡(luò)重要的性能指標(biāo)之一。本文針對(duì)多媒體內(nèi)容的智能調(diào)度,應(yīng)用隨機(jī)幾何理論和泊松點(diǎn)過(guò)程對(duì)無(wú)線(xiàn)通信網(wǎng)絡(luò)中的基站和用戶(hù)進(jìn)行建模和分析,重點(diǎn)研究廣播蜂窩異構(gòu)融合網(wǎng)絡(luò)中的能量效率問(wèn)題。為了獲得更高的網(wǎng)絡(luò)吞吐量和能量效率,利用現(xiàn)有數(shù)字廣播網(wǎng)絡(luò)改造后所釋放的UHF頻譜資源,實(shí)現(xiàn)微蜂窩網(wǎng)絡(luò)和數(shù)字廣播網(wǎng)絡(luò)的異構(gòu)融合,從而為無(wú)線(xiàn)移動(dòng)寬帶需求的快速增長(zhǎng)提供最為有效的技術(shù)手段。在融合網(wǎng)絡(luò)中,定義需要傳輸?shù)亩嗝襟w內(nèi)容總數(shù)為M和內(nèi)容調(diào)度中心調(diào)度給廣播網(wǎng)絡(luò)的多媒體內(nèi)容的比例為per(或者數(shù)目n),對(duì)用戶(hù)請(qǐng)求的多媒體內(nèi)容進(jìn)行智能調(diào)度,基本的調(diào)度策略為:按照多媒體內(nèi)容的請(qǐng)求概率由大到小進(jìn)行排序,概率較高的??M*per??或者n種多媒體內(nèi)容由數(shù)字廣播網(wǎng)絡(luò)來(lái)傳輸,剩余的由蜂窩網(wǎng)絡(luò)來(lái)傳輸。對(duì)融合網(wǎng)絡(luò)的研究分為以下兩方面:1.從用戶(hù)請(qǐng)求多媒體內(nèi)容的角度出發(fā),根據(jù)用戶(hù)請(qǐng)求多媒體內(nèi)容的概率在Zipf分布中的排序,將請(qǐng)求的內(nèi)容分為公共內(nèi)容和個(gè)性化內(nèi)容兩類(lèi)。基于隨機(jī)幾何空間網(wǎng)絡(luò)模型,考慮廣播網(wǎng)絡(luò)的覆蓋范圍、蜂窩網(wǎng)絡(luò)基站的激活概率和用戶(hù)的中斷概率,推導(dǎo)廣播蜂窩異構(gòu)融合網(wǎng)絡(luò)的有效容量,并計(jì)算融合網(wǎng)絡(luò)的能量效率。本文將per作為參考變量,分析該變量對(duì)融合網(wǎng)絡(luò)能效的影響。仿真結(jié)果表明,當(dāng)調(diào)度比例per給定時(shí),在融合網(wǎng)絡(luò)中微蜂窩基站的部署密度小于用戶(hù)密度的情況下,融合網(wǎng)絡(luò)的能效高于同等參數(shù)配置下單蜂窩網(wǎng)絡(luò)的能效。2.由于第三章中融合網(wǎng)絡(luò)能量效率表達(dá)式過(guò)于復(fù)雜,難以從理論上給出per的最優(yōu)值,為此,本文對(duì)該能量效率表達(dá)式進(jìn)行分析與化簡(jiǎn)。以簡(jiǎn)化場(chǎng)景下融合網(wǎng)絡(luò)能量消耗為優(yōu)化目標(biāo),以廣播網(wǎng)絡(luò)傳輸?shù)亩嗝襟w內(nèi)容數(shù)和帶寬分配因子為約束條件,建立優(yōu)化問(wèn)題,并通過(guò)引入Lambert W函數(shù)對(duì)該優(yōu)化問(wèn)題進(jìn)行求解。仿真結(jié)果表明,隨著多媒體內(nèi)容總數(shù)的增加,廣播網(wǎng)絡(luò)傳輸?shù)亩嗝襟w內(nèi)容數(shù)和帶寬分配因子的仿真曲線(xiàn)逼近理論曲線(xiàn),從而驗(yàn)證了優(yōu)化問(wèn)題求解結(jié)果的正確性。
[Abstract]:With the popularity of mobile Internet, in order to solve the contradiction between the rapid growth of mobile information services and the limitation of wireless network transmission capacity, network convergence technology, as an effective way, has been paid more and more attention and research. From the point of view of green communication, energy efficiency has become one of the important performance indicators of wireless networks. Using stochastic geometry theory and Poisson point process to model and analyze the base stations and users in wireless communication networks, the energy efficiency problem in broadcast cellular heterogeneous fusion networks is studied in order to achieve higher throughput and energy efficiency. Using the UHF spectrum resources released by the existing digital broadcasting network, the heterogeneous integration of microcellular network and digital broadcast network is realized. In order to provide the most effective technical means for the rapid growth of the demand for wireless mobile broadband. Defines that the total number of multimedia content to be transmitted is M and the proportion of multimedia content scheduled by the content scheduling center to the broadcast network is per( or a number of nngs) to intelligently schedule the multimedia content requested by the user. The basic scheduling strategy is: sort according to the request probability of multimedia content from large to small, the probability is higher? ? Mimper? ? Or n kinds of multimedia content are transmitted by the digital broadcast network, and the rest is transmitted by the cellular network. The research on the fusion network is divided into the following two aspects: 1.From the point of view of the user requesting the multimedia content, According to the ranking of the probability of users requesting multimedia content in the Zipf distribution, the requested content is divided into two categories: public content and personalized content. Based on the stochastic geometric space network model, the coverage of broadcast network is considered. The activation probability of the base station and the interruption probability of the user in the cellular network are derived, the effective capacity of the broadcast cellular heterogeneous fusion network is derived, and the energy efficiency of the fusion network is calculated. In this paper, per is used as the reference variable. The effect of this variable on the energy efficiency of fusion network is analyzed. The simulation results show that when the scheduling ratio per is timed, the deployment density of the microcellular base station in the fusion network is less than the user density. The energy efficiency of the fusion network is higher than that of the cellular network with the same parameters. 2. Because the expression of the energy efficiency of the fusion network is too complicated in Chapter 3, it is difficult to give the optimal value of per theoretically. In this paper, the energy efficiency expression is analyzed and simplified. In order to optimize the energy consumption of the fusion network under the simplified scenario, the optimization problem is established with the number of multimedia content transmitted by the broadcast network and the bandwidth allocation factor as the constraint conditions. The Lambert W function is introduced to solve the optimization problem. The simulation results show that with the increase of the total number of multimedia content, the simulation curve of multimedia content number and bandwidth allocation factor of broadcast network approximates to the theoretical curve. Thus, the correctness of the solution results of the optimization problem is verified.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TN929.5;TP393.01

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 陳慶章;組建異構(gòu)網(wǎng)應(yīng)著重考慮的問(wèn)題和產(chǎn)品現(xiàn)狀[J];計(jì)算機(jī)時(shí)代;1994年03期

2 汪蕓,顧冠群,謝俊清,兌繼英,孫昌平;異構(gòu)網(wǎng)絡(luò)集成方法研究[J];計(jì)算機(jī)研究與發(fā)展;1997年03期

3 馬義忠;楊紅旗;高彥;専秋峰;;基于移動(dòng)Agent異構(gòu)網(wǎng)絡(luò)管理的分析與設(shè)計(jì)[J];微計(jì)算機(jī)信息;2008年33期

4 黃川;鄭寶玉;;多無(wú)線(xiàn)電協(xié)作技術(shù)與異構(gòu)網(wǎng)絡(luò)融合[J];中興通訊技術(shù);2008年03期

5 吳蒙;季麗娜;王X;;無(wú)線(xiàn)異構(gòu)網(wǎng)絡(luò)的關(guān)鍵安全技術(shù)[J];中興通訊技術(shù);2008年03期

6 李R，

本文編號(hào)：1634779