LTE-Advanced 系統可調適性載波聚合策略

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姓名

陳乃寧(Nai-ning Chen) 查詢紙本館藏

畢業系所

通訊工程學系

論文名稱

LTE-Advanced 系統可調適性載波聚合策略
(Adaptive Carrier Aggregation Scheme for LTE-Advanced Systems)

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摘要(中)

載波聚合(Carrier Aggregation)技術成為LTE-Advanced 實現大頻寬的關鍵技術，可以想像的是這項技術也帶來了諸多的挑戰。一開始將初步介紹載波聚合技術，並且根據日本營運商NTT DoCoMo 在3GPP RAN2 會議裡所提出的載波聚合配置情境來探討載波單元分配問題。因為使用者能力與位置不同而所能使用的載波單元也不同，這
導致了某些載波單元過於擁擠。本文使用兩層演算法，上層JWSQ 載波單元分配演算法用來解決使用者間載波單元重疊問題，下層為PF演算法，而JWSQ 考慮了載波內使用者傳輸狀況也考慮載波單元負載狀況，經由模擬證明，利用這兩層演算法，可增進系統載波單元間的負載平衡，也可提高使用者間的傳輸公平性。

摘要(英)

Carrier Aggregation (CA) is the key technique to realize wide bandwidth in the LTE-Advanced system. There exist lots of challenge to aggregate multiple Carrier Components (CCs). This study starts with a brief introduction of CA and then discusses the CC assignment of the CA scenarios proposed by the Japanese carrier NTT DoCoMo in the third Generation Partnership Project Radio Layer 2 (3GPP RAN2) meeting. A 2-layer algorithms is then proposed. Layer-1 is the proposed CC assignment algorithm, called JWSQ, which considers user transmission situation and carrier loading condition. The JWSQ solves the problem of overlapping of CC among multiple users. Further, Layer-2 is the PF algorithm in the literature. The simulation results proves that the 2-Layer
algorithms can enhance the carrier load balance and transmission fairness among users.

關鍵字(中)

★ LTE-A
★ 負載平衡
★ 載波調度
★ 封包調度
★ 載波聚合

關鍵字(英)

★ Carrier Aggregation
★ LTE-A
★ Loading Balance
★ Packet Scheduling
★ Carrier Assignment

論文目次

中文摘要......................................................I
英文摘要.....................................................II
誌謝.......................................................III
目錄........................................................IV
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......................................................................................3
第二章相關研究背景..............................................................................4
2.1 LTE 介紹.......................................................................................4
2.2 LTE-Advanced 介紹.....................................................................7
2.3 封包調度演算法........................................................................12
2.4 載波單元配置演算法................................................................16
2.5 公平性指標................................................................................17
第三章系統情境與架構以及JWSQ 演算法.........................................19
3.1 載波聚合情境............................................................................19
3.2 系統拓樸與架構........................................................................21
3.3 最小權重隊列演算法................................................................25
3.4 使用者通道狀況........................................................................28
第四章模擬參數與數據討論................................................................31
4.1 模擬環境通道模型....................................................................31
4.2 模擬參數....................................................................................33
4.3 模擬數據討論..............................................................................36
第五章結論與未來研究........................................................................44
參考文獻..................................................................................................45

參考文獻

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指導教授

吳中實(Jung-shyr Wu)

審核日期

2011-7-26

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