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研究生: 施冠汎
Shi, Guan-Fan
論文名稱: LTE通訊系統中針對同層干擾環境對微小型基地台功率控制與用戶位置推薦演算法
Femtocell Power Control and User Location Recommendation Algorithm for Co-Tier Interference Environment in LTE Communication System
指導教授: 王嘉斌
Wang, Chia-Pin
學位類別: 碩士
Master
系所名稱: 電機工程學系
Department of Electrical Engineering
論文出版年: 2019
畢業學年度: 107
語文別: 中文
論文頁數: 92
中文關鍵詞: 長期演進技術同層干擾微小型基地台功率控制位置推薦
英文關鍵詞: Long Term Evolution (LTE), Co-Tier Interference, Femtocell, Power Control, Location Recommendation
DOI URL: http://doi.org/10.6345/THE.NTNU.DEE.005.2019.E08
論文種類: 學術論文
相關次數: 點閱:134下載:5
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  • 在未來的長期演進技術(Long Term Evolution ,LTE)中,將會有一項至為關鍵的設備,也就是微小型基地台(Femtocell),微小型基地台不僅在佈建方面靈活,且體積相對於傳統的大型基地台(Macrocell)來的更小,此設備將能改善大型基地台的覆蓋不足,並且能提升整體的網路容量。
    本論文將提出一種於LTE通訊系統中針對同層干擾(co-tier interference)環境對微小型基地台功率控制與用戶位置推薦演算法,希望能藉由此演算法減少鄰近微小型基地台對用戶的干擾,並且透過位置推薦讓用戶移動到訊號更好的位置,以改善網路整體的速率和保持用戶的服務品質。
    而實驗模擬環境中將會有九個微小型基地台以及多位用戶的同層干擾環境來驗證本論文所提出的功率控制與位置推薦演算法,從實驗結果顯示微小型基地台的干擾與功率耗損會逐步降低,整體用戶的同層干擾將會減少,且用戶吞吐量會有顯著的提升。

    In the future Long Term Evolution (LTE), there will be a essential device, namely the Femtocell. The Femtocell is not only flexible in terms of deployment, but also smaller in size than the traditional Macrocell. This device will improve the shortage of coverage of Macrocell and increase the overall network capacity.
    This paper will propose a Femtocell power control and user location recommendation algorithm for co-tier interference environment in LTE communication system. The algorithm reduces the interference of the neighboring Femtocell to the user, and allows the user to move to a better position through the location recommendation to improve the overall speed of the network and maintain the Quality of Service (QoS) of users.
    In the experimental simulation environment, there will be nine Femtocells and multiple users' co-tier interference environment to verify the power control and position recommendation algorithms proposed in this paper. The experimental results show that the interference and power consumption of the Femtocells will be gradually reduced, the co-tier interference of the overall user will be decreased, and the user throughput will be significantly improved.

    中文摘要 i 英文摘要 ii 誌  謝 iv 目  錄 v 圖 目 錄 viii 表 目 錄 xi 第一章  緒論 1 1.1 研究動機與背景 1 1.2 研究目的 3 1.3 文獻探討 3 1.4 論文架構 6 第二章  相關知識介紹 7 2.1 LTE技術與架構 7 2.1.1 LTE雙工技術 7 2.1.2 LTE多工與多重接取技術 8 2.1.3 LTE排程策略 9 2.1.4 LTE多天線技術 10 2.1.5 LTE載波聚合技術 11 2.1.6 LTE與LTE-A差異比較 12 2.1.7 LTE演進封包核心架構 13 2.1.8 LTE通用地面無線接取網路架構 14 2.1.9 LTE異質性網路架構 15 2.2 Femtocell背景與技術 16 2.2.1 Femtocell存取控制機制 17 2.2.2 Femtocell自組織網路 18 2.2.3 Femtocell頻譜分配 21 2.2.4 Femtocell干擾環境 23 第三章  微小型基地台功率控制與用戶位置推薦 25 3.1 研究架構 25 3.2 研究做法之動機 25 3.2.1 研究動機之起源 26 3.3 系統模型建立 30 3.3.1 微小型基地台功率控制演算法設計 35 3.3.2 用戶位置推薦演算法設計 42 3.4 對微小型基地台功率控制與用戶位置推薦演算法結合 49 第四章  實驗模擬參數設定與模擬結果 51 4.1 模擬環境與參數設定 51 4.2 模擬結果 52 4.2.1 模型1、FBS休眠模型 53 4.2.2 模型2、FBS啟動模型 56 4.2.3 模型3、FBS調整功率模型 59 4.2.4 模型4、FUE部份換手模型 62 4.2.5 模型5、FUE全部換手模型 66 4.2.6 模型6、FUE位置推薦模型 70 4.2.7 完整模型 74 4.3 模擬討論與效能分析 80 第五章  結論 88 參考文獻 89 自 傳 91 學術成就 92

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