本文選題：異構(gòu)網(wǎng) + 小區(qū)選擇��； 參考：《西安電子科技大學(xué)》2014年碩士論文

【摘要】：隨著人們?nèi)找嬖鲩L的數(shù)據(jù)傳輸需求,傳統(tǒng)的同構(gòu)網(wǎng)架構(gòu)已經(jīng)逐漸暴露出自己的弱點,3GPP會議于2009年9月正式將異構(gòu)網(wǎng)的研究提上日程。由于異構(gòu)網(wǎng)中新加入的低功率節(jié)點的發(fā)射功率及天線高度相對于宏基站都很低,所以其覆蓋范圍過小、服務(wù)用戶過少,不能實現(xiàn)預(yù)期的功能,因此改進的小區(qū)選擇算法成為研究目標。為了實現(xiàn)提高低功率節(jié)點被UE選擇的優(yōu)先級、擴大低功率節(jié)點覆蓋范圍的目的,會議經(jīng)過討論并由高通公司提出了RE算法。為了克服RE算法自身的兩個缺點,本文提出了兩種改進的異構(gòu)網(wǎng)小區(qū)選擇算法并對這三種算法的性能進行了仿真對比,仿真結(jié)果表明改進后的小區(qū)選擇算法可以有效克服RE算法的兩個缺點并略微提升系統(tǒng)性能。由于異構(gòu)網(wǎng)中新加入的Pico站可以看做是小型的宏基站,這相當(dāng)于給原有系統(tǒng)引入了許多的干擾源并產(chǎn)生了很多小區(qū)邊緣。為了消除干擾并改善這些小區(qū)邊緣的用戶性能,本文提出了兩種CoMP在異構(gòu)網(wǎng)中的應(yīng)用方案,并對方案性能進行了仿真對比。結(jié)果表明異構(gòu)網(wǎng)中加入CoMP后確實可以提高用戶吞吐量并改善全網(wǎng)的性能。
[Abstract]:With the increasing demand for data transmission, the traditional isomorphic network architecture has gradually exposed its weaknesses. In September 2009, the research of heterogeneous networks was formally put on the agenda of the 3GPP conference. Because the transmission power and antenna height of the newly added low power nodes in heterogeneous networks are very low compared with the Acer stations, the coverage is too small and the service users are too few to achieve the expected functions. Therefore, the improved cell selection algorithm becomes the research goal. In order to improve the priority of low power nodes selected by UE and expand the coverage of low power nodes, the RE algorithm was discussed and proposed by Qualcomm. In order to overcome the two shortcomings of RE algorithm, two improved cell selection algorithms in heterogeneous networks are proposed and the performance of these three algorithms is simulated and compared. Simulation results show that the improved cell selection algorithm can effectively overcome the two shortcomings of RE algorithm and improve the system performance slightly. Because the new Pico stations in heterogeneous networks can be regarded as small macro stations, this is equivalent to introducing a lot of interference sources to the original system and producing a lot of cell edges. In order to eliminate interference and improve the user performance of these cell edges, this paper proposes two applications of CoMP in heterogeneous networks, and compares the performance of the schemes by simulation. The results show that the addition of CoMP in heterogeneous networks can improve the throughput of users and improve the performance of the whole network.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN929.5

【相似文獻】

相關(guān)期刊論文 前10條

1 陳慶章;組建異構(gòu)網(wǎng)應(yīng)著重考慮的問題和產(chǎn)品現(xiàn)狀[J];計算機時代;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];計算機研究與發(fā)展;1997年03期

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

4 黃川;鄭寶玉;;多無線電協(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;;無線異構(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：1954136