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系統識別號 U0002-1708201210102100
中文論文名稱 基植於IEEE 802.16m 毫微微蜂巢式基地台網路中,一個改善頻寬利用率之下行/上行框架比例動態調整機制
英文論文名稱 DRAM:A Dynamic Downlink/Uplink Region Adjustment Mechanism for Bandwidth Utilization Improvement in IEEE 802.16m Femtocells
校院名稱 淡江大學
系所名稱(中) 資訊工程學系碩士班
系所名稱(英) Department of Computer Science and Information Engineering
學年度 100
學期 2
出版年 101
研究生中文姓名 林坤鴻
研究生英文姓名 Kun-Hong Lin
學號 699410659
學位類別 碩士
語文別 中文
第二語文別 英文
口試日期 2012-06-22
論文頁數 49頁
口試委員 指導教授-石貴平
委員-石貴平
委員-王三元
委員-蘇民揚
委員-陳弘璋
中文關鍵字 毫微微蜂巢式基地台  IEEE 802.16m  全球互通微波存取  資源管理配置  正交分頻多工多重存取 
英文關鍵字 Femto ABS  IEEE 802.16m  WiMAX  Resource management  OFDMA 
學科別分類 學科別應用科學資訊工程
中文摘要 本篇論文考量在IEEE 802.16m OFDMA Frame架構下,分析框架比例對於LRU Utilization之影響 ,並針對問題提出A Dynamic Downlink/Uplink Resource Adjustment Mechanism (DRAM),藉此尋找出可以並行傳輸的傳輸對組合來改善LRU utilization並且同時考量Femtocells之干擾。首先DRAM利用Advanced Mobile Station(AMS)與Femto Advanced Base Station(ABS) 的位置關係建構出干擾關係圖,根據關係圖依序調整各個Femto ABS的框架比例,藉此改善LRU Utilization。最後在模擬的結果可以明顯看到DRAM之LRU utilization、system throughput以及service ratio這三項數值明顯比其他做法來的好上許多。
英文摘要 The thesis investigates the impact between the ratio of downlink/uplink subframes and logical resource unit (LRU) utilization in the IEEE 802.16 OFDMA systems. Based on the relationship, the thesis proposes a dynamic downlink/uplink resource adjustment mechanism (DRAM) for LRU utilization improvement by finding the concurrent transmission pairs based on the interference relationships among femtocells. First, DRAM constructs interference relationship graph based on the location information of advanced mobile stations (AMSs) and femto advanced base stations (ABSs) and adjusts the ratio of downlink/uplink subframes for each femtocell. Finally, the simulation results show that the LRU utilization, system throughput and service ratio of DRAM outperforms other related work.
論文目次 Table of Contents
1 Introduction 1
2 Preliminaries 5
2.1 IEEE 802.16m Frame Structure 5
2.2 IEEE 802.16m Femtocells Architecture 6
2.3 Parallel Transmission Problem 8
2.4 Femtocell Interference Problem 9
2.5 Transmission Direction Interference 11
2.5.1 D/D and U/U Transmissions 11
2.5.2 D/U and U/D Transmissions 13
2.6 Dynamic Downlink/Uplink Region Adjustment 14
2.7 Related Works 15
3 A Dynamic Downlink/Uplink Region Adjustment Mechanism (DRAM) 19
3.1 Femto ABS Selection 20
3.2 Transmission Pairs Selection 23
3.3 Frame Ratio 26
3.4 Other Femto ABSs Consideration 27
3.5 Load Selection 27
3.6 Group of Femto ABS 28
3.7 Time complexity 28
4 Performance Evaluation 31
5 Conclusions 36
Reference 37
Appendix – English Paper 42

List of Figures
圖 (1)、IEEE 802.16m Frame Structure 2
圖 (2)、IEEE 802.16m Basic Frame Architecture 5
圖 (3)、WiMAX Femtocell system architecture示意圖 6
圖 (4)、多對傳輸對使用同一個LRU 8
圖 (5)、LRU wastage情形 9
圖 (6)、Power control示意圖 10
圖 (7)、Resource Blocking 示意圖 10
圖 (8)、相同方向Downlink傳輸造成的干擾問題 11
圖 (9)、相同方向Uplink 傳輸造成干擾問題 12
圖 (10)、相異方向Downlink/Uplink 傳輸造成干擾問題 13
圖 (11)、考量傳輸對進行相同傳輸以及相異傳輸比較圖 14
圖 (12)、Frame比例調整概念圖 14
圖 (13)、DRA(Mobihoc 2009)演算法示意圖 17
圖 (14)、DRA(VTC 2011)演算法示意圖 18
圖 (15)、網路場景以及傳輸對干擾圖 20
圖 (16)、干擾圖加入drgree概念 21
圖 (17)、各個Femto ABSs 計算total outdegree 22
圖 (18)、Average outdegree 22
圖 (19)、Intersection Part示意圖 23
圖 (20)、Femto ABS 1以及Femto ABS 3傳輸對組合 23
圖 (21)、只可進行相異傳輸方向之傳輸對組合 24
圖 (22)、Intersection Part (IP)區域內的傳輸對組合 25
圖 (23)、可進行相同傳輸以及相異傳輸方向傳輸對組合 25
圖 (24)、計算Intersection Part 示意圖 26
圖 (25)、考量Femto ABS 2之調整Frame Ratio 示意圖 27
圖 (26)、System Throughput 32
圖 (27)、Service Ratio 33
圖 (28)、LRU Utilization 34
圖 (29)、Traffic model 不同時的System Throughput 35

List of Tables
表(1)、Spare Capacity Request TLV Information 7
表(2)、Spare Capacity Report TLV Information 7
表(3)、實驗相關參數 31
參考文獻 [1] IEEE Draft Std. P802.16TM-2009, “IEEE Draft Standard for Local and Metropolitan Area Networks -Part 16: Air Interface for Broadband Wireless Access Systems,” IEEE Std., May 2009.
[2] IEEE Draft Std. P802.16m D6, “IEEE RAFT Amendment to IEEE Standard for Local and Metropolitan Area Networks-Air Interface for Fixed and Mobile Broadband Wireless Access Systems,” IEEE Std., Apr. 2010.
[3] A. Bacioccola, C. Cicconetti, C. Eklund, L. Lenzini, Z. Li, E. Mingozzi, “IEEE 802.16: History, Status and Future Trends,” Computer Communications, vol. 33, no. 2, 2010, pp. 113-123.
[4] H. Claussen, “Performance of Macro- and Co-Channel Femtocells in a Hierarchical Cell Structure,” in Proceedings of the IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), 2007.
[5] J. Y. Kim and D. H. Cho, “A Joint Power and Subchannel Allocation Scheme Maximizing System Capacity in Dense Femtocell Downlink Systems,” in Proceedings of the IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), 2009.
[6] X. Li, L. Qian, and D. Kataria, “Down Link Power Control in Co-channel Marcocell Femtocell Overlay,” in Proceedings of the Conference on Information Sciences and Systems (CISS), 2009.
[7] H. C. Lee, D. C. Oh, and Y. H. Lee, “Mitigation of Inter-Femtoccell Interference with Adaptive Fractional Frequency Reuse,” in Proceedings of the IEEE International Conference on Communications (ICC), 2010.
[8] D. Lopez-Perez, A. Juttner, and J. Zhang, “Dynamic Frequency Planning Versus Frequency Reuse Schemes in OFDMA Networks,” in Proceedings of the IEEE Vehicular Technology Conference (VTC), 2009.
[9] K. Sundaresan and S. Rangarajan, “Efficient Resource Management in OFDMA Femto Cells,” in Proceedings of the ACM International Symposium on Mobile Ad Hoc Networking and Computing (Mobihoc), 2009.
[10] R. Cohen, L. Katzir, “Computational Analysis and Efficient Algorithms for Micro and Macro OFDMA Scheduling,” IEEE Transactions on Networking, vol. 18, no. 1, 2008, pp. 15-26.
[11] A. Erta, C. Cicconetti, and L. Lenzini, “A Downlink Data Region Allocation Algorithm for IEEE 802.16e OFDMA,” in Proceedings of the International Conference on Information, Communications and Signal Processing (ICICS), 2007.
[12] T. Ohseki, M. Morita, and T. Inoue, “Burst Construction and Packet Scheme for OFDMA Downlinks in IEEE 802.16 Systems,” in Proceedings of the IEEE Global Telecommunications Conference (GLOBECOM), 2007.
[13] B.-S. Yehuda, I. Kitroser, and Y. Dinitz, “Two-dimensional Mapping for Wireless OFDMA Systems,” IEEE Transactions on Broadcasting, vol. 52, no. 3, Sep. 2006, pp. 388–396.
[14] R. Y. Chang, Z. Tao, J. Zhang, and C. C. Jay Kuo, “Multicell OFDMA Downlink Resource Allocation Using a Graphic Framework,” IEEE Transactions on Vehicular Technology, vol. 58, no.7, Sep. 2009, pp. 3454-3507.
[15] R. Y. Kim, J. S. Kwak, and K. Etemad, “WiMAX Femtocell: Requirements, Challenges, and Solutions,” IEEE Communications Magazine, vol. 47, no 9, 2009, pp. 84-91.
[16] ITU-R Recommendation M.1225: “Guidelines for Evaluation of Radio Transmission Technologies for IMT-2000,” Feb. 1997.
[17] WiMAX Forum NWG , “WiMAX Forum Network Architecture - Release 1, version 1.3.0,” Nov. 2008.
[18] K. Zheng, X. Shen, and W. Wang, “A Distributed Resource Allocation Scheme in Femtocell Network,” in Proceedings of the IEEE Vehicular Technology Conference (VTC), 2011.
[19] B. Can, H.Yanikomeroglu, F. A. Onat, E. D. Carvalho, and H. Yomo, “Efficient Cooperative Diversity Schemes and Radio Resource Allocation for IEEE 802.16j,” in Proceedings of the IEEE Wireless Communications and Networking Conference (WCNC), Les Vegas, Nevada, USA, Mar. 31-Apr. 3, 2008.
[20] H. Jung, and J. Lee, “Downlink Resource Management for OFDMA Femtocells using Stochastic Subchannel Allocation,” in Proceedings of the Asia-Pacific Conference on Communications (APCC), Auckland, Zealand, Oct. 31-Nov. 3, 2010.
[21] S. P. Yeh, S. Talwar, S. C. Lee , and H. Kim, “WiMAX Femtocells A Perspective on Network Architecture, Capacity, and Coverage,” IEEE Communications Magazine, vol. 46, Issue 10, 2008
[22] U. Jang, K. Y. Lee, K.S. Cho, and W. Ryu, “Downlink Transmit Beamforming for Inter-cell Interference Mitigation with BS Cooperation,” in Proceedings of the IEEE Global Communications Conference (GLOBECOM), Miami, Florida, USA, Dec. 6-10, 2010.
[23] A. Erta, C. Cicconetti, and L. Lenzini, “A Downlink Data Region Allocation Algorithm for IEEE 802.16e OFDMA,” in Proceedings of the International Conference on Information, Communications and Signal Processing (ICICS 2007), Singapore, Dec. 10-13, 2007.
[24] M. Bennis, and D. Niyato, “A Q-learning Based Approach to Interference Avoidance in Self-Organized Femtocell Networks,” in Proceedings of the IEEE Global Communications Conference Workshop (GLOBECOM Workshop 2010), Miami, Florida, USA, Dec. 6, 2010.
[25] A. Hatoum, N. Aitsaadi, R. Langar, and G. Pujolle “FCRA: Femtocell Cluster-based Resource Allocation Scheme for OFDMA Networks,” in Proceedings of the IEEE International Conference on Communications (ICC), 2011.
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