在LTE-A下聚合未授權頻譜及動態分配資源以優化系統效能

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姓名

李婉如(Wan-ru-Li) 查詢紙本館藏

畢業系所

通訊工程學系

論文名稱

在LTE-A下聚合未授權頻譜及動態分配資源以優化系統效能
(Aggregation of Unlicensed Spectrum and Dynamic Resource Allocation to Optimize LTE-A System Efficiency)

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至系統瀏覽論文 ( 永不開放)

摘要(中)

隨著移動通信技術的發展，使用者與日俱增，對數據傳輸速率的要求越
來越高，造成頻譜資源緊缺的現象日益嚴重，於是在 2008 年 3GPP 開始制
定第四代無線網路系統 LTE-Advanced 相關規格，其中載波聚合(Carrier
Aggregation)技術可藉由聚合連續與非連續載波的方式來提升資料傳輸速
率以滿足大量使用者的傳輸需求。
　　但使用者對於多媒體網路應用服務的需求持續提升，使得授權頻譜越來
越不堪負荷，因此本篇的論文希望能結合授權與未授權頻譜，提供更寬廣
的資料通道，進而提供使用者更高的資料傳輸速率，本論文著重於提高下
行鏈路的系統吞吐量，提出了基於基因演算法優化權重並參考載波單元通
道品質及負載狀況以挑選最適合使用者的載波單元，以及針對 GBR 與
Non-GBR不同Traffic類型的資源分配方法，使系統進行更有效的資源分配，
最後我們將透過模擬的結果來證明所提出的方法是否有效提高系統吞吐量
及使用者滿意度。

摘要(英)

With the development of mobile communication technology, the number of users and the demand of data rate has been increasing, causing serious shortage of the spectrum resources. In 2008, 3GPP began to develop the specification of the fourth-generation wireless network system, i.e. LTE-Advanced, and the carrier aggregation (CA) technology to enhance the data rate by aggregating continuous and non-continuous carriers to make a lot of users satisfied with the
transmission requirement.
　　But the demand of users for multimedia Internet services has been increasing, making the unlicensed spectrum become overloaded. Therefore, this thesis hopes to combine the licensed and unlicensed spectrum to provide a wide data channel and high data rate to users. This thesis focuses on improving the system throughput in the downlink and proposes the way based on the generic algorithm (GA) to optimize the weight. According to channel quality and loading, we select the component carrier which is the most suitable to users, and a resource allocation method for the GBR and non-GBR of different traffic types to make resource allocation more effective. Finally, we validate our method through simulation, to check out whether the proposed method can improve system throughput and user satisfaction or not.

關鍵字(中)

★ 載波聚合
★ 基因演算法
★ 資源分配
★ 系統吞吐量
★ 滿意度

關鍵字(英)

★ LTE-A

論文目次

摘要 ........................................................... I
ABSTRACT ...................................................... II
致謝 .......................................................... IV
目錄 ........................................................... V
圖目錄 ........................................................ VI
表目錄 ...................................................... VIII
第一章序論 .................................................. 1
1-1.前言 ..................................................... 1
1-2.研究動機 ................................................. 1
1-3.論文架構 ................................................. 2
第二章相關研究背景 .......................................... 3
2-1.LTE 簡介 ................................................. 3
2-2.LTE-Advanced 介紹 ......................................... 7
2-3.LTE-Unlicensed 介紹[9] ................................... 11
2-4.載波單元配置演算法 ...................................... 13
2-5.封包分配演算法 .......................................... 14
2-6.Jain 公平性指標 ......................................... 16
第三章研究方法 ............................................. 17
3-1.系統拓樸與架構 .......................................... 17
3-2.簡單加權法 .............................................. 21
3-3.基因演算法 .............................................. 22
3-4.資源分配演算法 .......................................... 28
第四章模擬參數與結果分析 ................................... 32
4-1.模擬環境及參數 .......................................... 32
4-2.Traffic Mode 介紹 ........................................ 33
4-3.模擬結果分析 ............................................ 36
第五章結論與未來研究 ....................................... 59
參考文獻 ...................................................... 61

參考文獻

61
參考文獻
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指導教授

吳中實

審核日期

2015-7-28

推文