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研究生： 洪敬翰
Ching-Han Hung
論文名稱： 5G基地台部署改善分析與可行性評估
Improvement Analysis and Feasibility Assessment of 5G Base Station Deployment in 5G Mid-Band
指導教授： 林丁丙
Ding-Bing Lin
口試委員: 吳宗霖
Tzong-Lin Wu
曾昭雄
Chao-Hsiung Tseng
學位類別： 碩士
Master
系所名稱： 電資學院 - 電子工程系
Department of Electronic and Computer Engineering
論文出版年： 2019
畢業學年度： 107
語文別： 中文
論文頁數： 64
中文關鍵詞： 5G中頻段 、5G基地台 、中新二號衛星 、同頻干擾 、鄰頻干擾 、小細胞基站 、衛星地面站 、保護距離 、護衛頻寬 、濾波器
外文關鍵詞： 5G Mid-Band, 5G Base station, ST-2, Co-channel interference, Adjacent-channel interference, Small cell, FSS station, Protection distance, Guard band, Band pass filter
相關次數： 點閱：240  下載：1 
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  •  上一筆

    • 本論文針對5G基地台實行佈建分析與可行性評估，並提出增設改善措施後的完整分析結果。透過台大頻譜觀測站系統，針對中新二號(ST-2)所採用的Extended C-band，於3400至4200MHz頻段，進行資料蒐集與分析，以研究ST-2的使用狀況與干擾評估。當佈建環境干擾源與FSS地面站屬於偏軸角71度的NLOS環境進行實驗，量測結果顯示，在鄰頻干擾部分，當C/N大於10dB時，未產生干擾情形。當佈建環境干擾源與FSS地面站屬於偏軸角為68度的LOS環境，同頻干擾從3655MHz~3659MHz進行實驗，量測結果顯示，干擾嚴重。本論文針對小細胞基站與FSS系統在共存環境下，提出採用保護距離的方法以及使用特製的帶通濾波器，來抑制小細胞基站與FSS系統共存時可能存在的干擾問題。根據數據分析，可以推算出當小細胞基站發射最大功率時，抑制小細胞基站對FSS地面站之干擾保護距離。

    We have completed the measurement and feasibility assessment of the 5G base station deployment and provided complete analysis results after adding improvement measures. Through the NTU Spectrum Observatory System, the team conducted a data collection and analysis for the Extended C-band used by the ST-2 satellite in the frequency bands from 3400 to 4200 MHz to study the usage and interference of the ST-2. The tests were done under the NLOS (Non-Line-Of-Sight) environment with off-axis angles of 71°, respectively, between the interference source and the FSS (Fixed Satellite Service) ground station. The measurement results show that with adjacent-frequency interference, when the carrier-to-noise (C/N) ratio is greater than 10dB, no interference occurs. Under the LOS (Line-Of-Sight) environment with an off-axis angle of 68°, the same-frequency interference tests were conducted from 3655 MHz to 3659 MHz. Measurement results show that the interference is serious. We used the protection distance method and the band pass filter in the coexistence environment between the small cell base station and the FSS system to suppress possible interference problems when the small cell base station coexists with the FSS system. According to the data analysis, it can be calculated that when the interference power is the maximum, the interference protection distance of the small cell base station to the FSS ground station is suppressed.

    摘要 ABSTRACT 誌謝 目錄 圖目錄 表目錄 第一章 緒論 1.1 前言 1.2 研究動機與目的 1.3 文獻探討 1.3.1 方法與程序步驟 1.3.2 重要參數探討 1.3.3 計算保護範圍(Protection zone) 1.4 論文架構 第二章 系統間干擾模型定義暨保護距離分析 2.1 小細胞基站與FSS系統概述 2.1.1 小細胞基站(Small cell) 2.1.2 固定衛星業務(Fixed Satellite Service: FSS) 2.2 小細胞基站與FSS系統間干擾類型 2.2.1 同頻干擾分析 2.2.2 鄰頻干擾分析 2.3 小細胞基站與FSS系統間干擾模型 2.4 避免兩系統間干擾之辦法 2.5 FSS系統干擾容忍值標準探討 2.5.1 FSS系統干擾保護標準 2.5.2 最大帶內干擾容忍值分析 2.5.3 最大帶內干擾容忍值參數標準探討 2.6 小細胞基站與FSS地面站之保護距離分析 2.6.1 保護距離計算方法 2.6.2 FSS衛星干擾小細胞基站的保護距離 2.6.3 小細胞基站同頻干擾FSS地面站的保護距離 2.6.4 小細胞基站鄰頻干擾FSS地面站的保護距離 2.7 理論值分析結果與建議 第三章 實際場域之干擾量測與評估 3.1 量測設備與參數設定 3.2 量測場域佈署與相關參數 3.3 量測步驟流程 3.4 量測數據 3.4.1 干擾源於電機二館C棟量測數據 3.4.2 干擾源於博理館頂樓量測數據 3.5 實際場域量測結果與分析 3.5.1 保護距離分析步驟 3.5.2 NLOS環境下的量測結果分析 3.5.3 LOS環境下的量測結果分析 第四章 改善措施之改善分析與評估測試 4.1 改善措施概述 4.2 改善措施之理論值保護距離分析 4.3 改善措施之實際場域評估測試 4.3.1 實測場域佈署與相關參數 4.3.2 測試方法與步驟 4.3.3 實測結果 4.4 綜合分析與建議 第五章 結論 參考文獻

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