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研究生(外文):Shing-Jye Huang
論文名稱(外文):Resource Allocation Scheme for LTE Uplink Transmission Based on Logical Channel Groups
指導教授(外文):Hwang-Cheng Wang
口試委員(外文):Kuo-Chang TingChih-Cheng TsengHwang-Cheng Wang
中文關鍵詞:LTEAAG SchedulingSC-FDMAQoS封包延遲
外文關鍵詞:LTEAAG SchedulingSC-FDMAQoSpacket delay
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通訊科技的時代智慧型手機成長蓬勃發展帶動下行動上網已經是基本需求。除了傳統的網站瀏覽 (Web browsing)服務還有各種不同的需求需要被滿足如:社群網路 (Social networking) 、影像 (Video) 、聲音 (Audio) 、檔案分享 (File sharing)……等多項需求。到了2020年預估智慧型手機用戶達到61億的規模,顯示行動寬頻已經是銳不可擋的趨勢。
基於SC-FDMA技術限制下資源分配Resource Allocation還是一個困難的問題。過往的論文主要目標放在使系統的throughput最大化;或是講究UE之間的公平性。而Allocate As Granted (AAG)演算法除了滿足大多數UE的需求,在Throughput方面也有不錯的表現。本篇論文補足AAG尚未完善的部分增加幾個限制。主要目標:UE在建立連線後,依照QCI的不同建立多個bearer。一台UE有多個應用 (Application)如何做好QoS管制且保障UE傳送的速率是重要的課題。LTE中沒有硬性規定QCI應分至哪一群 (Logical Channel Groups),而是交給operator自訂。本論文自訂優先層級可以有效率的分配RB,在滿足Guaranteed Bit Rate (GBR)服務之時間延遲限制下,亦能維持整體系統效能。

The booming growth of smart phones has driven the rapid development of mobile communication technology. In addition to traditional web browsing services, a variety of different needs have arisen, such as social networking, video, audio, and file sharing. It has been estimated that smart phone users will reach 6.1 billion by the year 2020, indicating that mobile broadband is an inevitable trend.
LTE uplink uses SC-FDMA technology because it can reduce the UE transmission signal power consumption, thereby increasing battery life. However, SC-FDMA has two limitations; namely, RBs must be allocated in a contiguous fashion and these contiguous RBs have to use the same coding.
Resource allocation under SC-FDMA technology is still a difficult problem. The main goals of previous research aim at maximizing throughput or fairness among UEs. Allocate As Granted (AAG) algorithms also have good performance in throughput in addition to meeting the needs of most UEs. This thesis improves AAG in several aspects. After UE establishes connection with eNodeB, it will set up a plurality of bearers with different QoS requirements according to QCI classes. A UE typically has multiple applications running at the same time. How to ensure the UE transfer rate to satisfy QoS is an important issue. LTE has not stipulated rules as to which logical channel group a QCI bearer should be mapped to, but left it to the operator for customization. In this thesis, priority levels can be assigned to UEs for the efficient allocation of RBs in order to meet the delay time limit of guaranteed bit rate (GBR) traffic, while also maintaining sound overall system performance.

摘要 I
Abstract II
目錄 IV
圖目錄 VI
表目錄 VII
第一章 導論 1
第一節 前言 1
第二節 研究動機 3
第三節 研究目的與方法 5
第四節 論文架構 5
第二章 相關文獻 6
第一節 Buffer Status Reporting 6
第二節 Uplink Scheduling Constrains 9
第三節 Reference Signals 9
第四節 QCI Class Identifier 12
第五節 AAG 13
第六節 AAG-2 16
第三章 AAG-LCG演算法 18
第一節 eNodeB針對UE需求建立Bearer 18
第二節 LCG方式同時分配GBR與NonGBR需求 19
第三節 AAG-LCG 演算法eNodeB分配資源 21
第四章 AAG-2與AAG-LCG 模擬比較 23
第一節 Near Real Time Video (NRTV) 23
第二節 Input pattern 24
第三節 效能指標 24
第四節 建立模擬環境 25
第五節 模擬結果 27
第五章 AAG-2與AAG-LCG 考慮Extra-Ratio 29
第一節 Extra-Ratio 介紹 29
第二節 決定AAG與AAG-LCG的Extra-Ratio 31
第三節 eNodeB預測剩餘資料量對Delay影響 32
第四節 模擬結果 32
第六章 結論 37
第一節 總結 37
第二節 未來工作 38
參考文獻 38

[1]F. C. Kuo, K. C. Ting, H. C. Wang, C. C. Tseng, and P. N. Liu, "Robust LTE uplink scheduling based on call admission control " presented at the ICT Convergence (ICTC), 2012
[2]F. C. Kuo, K. C. Ting, H. C. Wang, C. C. Tseng and H. J. Kao, "在LTE系統中探討上行傳送的maximum burst size," presented at the Mobile Computing Workshop, 2012.
[3]F. C. Kuo, K. C. Ting, H. C. Wang, C. C. Tseng, and P. N. Liu, "User Requirement Based Resource Allocation Scheme for LTE Uplink," presented at the IEEE WPMC, 2012.
[4]陳明偉, LTE系統中考量服務品質之資源分配機制,碩士論文, 電子工程學系, 國立宜蘭大學, 2014.
[5]The Global mobile Suppliers Association http://www.gsacom.com/
[6]Hyung G. Myung, “Introduction to single carrier FDMA”, 15th European Signal Processing Conference (EUSIPCO 2007), Poznan, Poland, September 3-7, 2007
[7]3GPP TS36.321, "Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access Medium Access Control protocol specification," 2009.
[8]E. Yaacoub and Z. Dawy, "A comparison of uplink scheduling in OFDMA and SCFDMA," IEEE 17th International Conference on Telecommunications, pp. 466-470, 2010.
[9]A. Ghosh, R. Ratasuk, B. Mondal, N. Mangalvedhe, and T. Thomas, "LTE-advanced: next-generation wireless broadband technology [Invited Paper]," IEEE Wireless Communications, vol. 17, pp. 10-22, 2012.
[10]A. Larmo, M. Lindstrom, M. Meyer, G. Pelletier, J. Torsner, and H. Wiemann, "The LTE link-layer design," IEEE Communications Magazine, vol. 47, pp. 52-59, 2009
[11]T. Ali-Yahiya, “Understanding LTE and its Performance,” Springer Science+Business Media, LLC 2011
[12]3GPP TS23.203, "Technical Specification Group Services and System Aspects; Policy and charging control architecture," 2010.
[13]F. C. Kuo, K. C. Ting, C. C. Tseng, H. C. Wang, and M. W. Chen, " Scheduling Both GBR and Non-GBR Uplink Bearers Based on Moving Average of Data Rate," in IEEE 11th Internationa Conference Heterogeneous Networking for Quality, Reliability, Security and Robustness , 2015.
[14]3GPP TS25.892 Technical Specification Group Radio Access Network; Feasibility Study for Orthogonal Frequency Division Multiplexing (OFDM) for UTRAN enhancement, 2004-06
[15]3GPP TS 36.300 V11.0.0, “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description, Stage 2,” Dec. 2011

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