跳到主要內容

臺灣博碩士論文加值系統

(3.235.174.99) 您好!臺灣時間:2021/07/24 20:22
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果 :::

詳目顯示

我願授權國圖
: 
twitterline
研究生:黃文帥
研究生(外文):Wen-Suai Huang
論文名稱:一個適用於IEEE802.16j之改善通道使用率的新型MAPMultiplexing方法
論文名稱(外文):A New MAP Multiplexing Approach for Improving the Channel Utilization in IEEE 802.16j Networks
指導教授:高勝助高勝助引用關係
指導教授(外文):Shang-Juh Kao
學位類別:碩士
校院名稱:國立中興大學
系所名稱:資訊網路多媒體研究所
學門:電算機學門
學類:軟體發展學類
論文種類:學術論文
論文出版年:2009
畢業學年度:97
語文別:英文
論文頁數:42
中文關鍵詞:無線網路排程
外文關鍵詞:IEEE 802.16jWiMAXMAP Multiplexingschedulingfrequency reuse
相關次數:
  • 被引用被引用:0
  • 點閱點閱:121
  • 評分評分:
  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:0
雖然IEEE 802.16j導入了中繼站的技術來延伸網路服務的範圍和加強整體系統的傳輸速率,但是也造成了無線電波資源使用上的問題。第一個就是在基地台和用戶端之間因為經由中繼站而產生重複資料的傳送,而另一個問題則是基地台和中繼站因為使用相同的頻道而必須互相錯開傳輸,因而導致的傳輸延遲。為了解決上述之問題,因此有兩種不同的研究被提出來改善無線電波資源使用效率。第一種是spatial independency,是在網路部署前事先規劃,利用地形建築物等的遮蔽使得電波互不干擾來達到多路傳送的目的。此方法只適合在事先規劃好且固定的網路環境中。另一個適用與動態網路環境下的方法為本篇研究所討論的MAP Multiplexing,此方法較有彈性並且能支援移動式的環境。
但是原始的MAP Multiplexing是在正交分頻多工的實體層架構下提出的,而且只實作下傳排程部分。在本篇研究中,我們提出了一個改良的方法以支援正交分頻多工存取的實體層並且包含了上傳及下傳的排程。同時我們也加入了偵測干擾的機制以提供更完整的MAP Multiplexing方法來提升整體網路的傳輸速率。而實驗結果也顯示我們所提出的方法和傳統IEEE 802.16j排程的比較,在上傳的部分我們的方法有67%的效能提昇,而在下傳的部份也有著12%的效能提升。
Although IEEE 802.16j (Mobile Multi-hop Relay, MMR) networks extend the coverage of service area and increase the system throughput by introducing the relay technology, the radio resource usage could be suffered from efficiency problem. One suffering is due to the data duplication between base station (BS) and subscriber station (SS), and the other one is that since both base station and relay stations (RSs) use the same frequency in a multi-hop relay cell (MR-cell), the radio resource has to be used exclusively. In order to improve the efficiency of radio resource utilization, two approaches of frequency reuse have been proposed. One is spatial independency, which can only be used for fixed and symmetrically planned relay networks. The other is MAP Multiplexing for arbitrary network topology, which may provide a better solution for the purpose of supporting flexibility and mobility.
Since the original MAP Multiplexing approach is only designated for downlink with Orthogonal Frequency Division Multiplexing (OFDM) frame structure with time division duplex (TDD), in this thesis, we propose a refined scheduling strategy for the Orthogonal Frequency Division Multiple Access (OFDMA) frame structure in both downlink and uplink subframes. We also include an interference detection scheme for the provision of possible simultaneous transmissions at the same subchannel, hence to enhance channel utilization. As a result, our proposed approach outperforms the regular relay scheduling scheme as much as 67% in throughput for uplink transmission and 12% for downlink transmission in the simulation.
摘要 i
Abstract ii
CHAPTER 1 INTRODUCTION 1
1.1 MOTIVATION 1
1.2 ORGANIZATION OF THIS THESIS 4

CHAPTER 2 RELATED WORKS 5
2.1 IEEE 802.16j 5
2.2 OFDM AND OFDMA 9
2.3 MAP MULTIPLEXING 10

CHAPTER 3 A REFINED MAP MULTIPLEXING APPROACHWITH INTERFERENCE DECTION 13
3.1 OVERVIEW OF PROPOSED SCHEME 13
3.2 INTERFERENCE DETECTION IN MR-CELL 16
3.3 ESTABLISHMENT OF INTERFERENCE GRAPH 19
3.4 DETERMINATION OF THE DL/UL-MAP 21

CHAPTER 4 SIMULATION AND EVALUATION 28
4.1 SIMULATION ENVIRONMENT 28
4.2 SIMULATION RESULTS 32

CHAPTER 5 CONLUSIONS AND FUTURE WORK 39
5.1 CONCLUSIONS 39
5.2 FUTURE WORK 40

REFERENCE 41
[1] IEEE P802.16j/D5, “Amendment for Multihop Relay Specification,” May 2008.
[2] IEEE Std 802.16e-2005, “Part 16: Air interface for fixed and mobile broadband wireless access systems,” Feb. 2006.
[3] P. Mach and R. Bestak, “Performance of IEEE 802.16 with relay stations,” 6th Conference on Telecommunications, May 2007.
[4] P. Mach and R. Bestak, “WiMAX Throughput Evaluation of Conventional Relaying,” PWC''07, Sept. 2007.
[5] H. Izumikawa, K. Saito, N. Fuke, T. Ueda and K. Sugiyama, “MAP Multiplexing in IEEE 802.16 Mobile Multi-Hop Relay,” PIMRC''06, Sept. 2006.
[6] D. C. Schultz, B. Walke, R. Pabst and T. Imrich, “Fixed and planned relay based radio network deployment concepts,” WWRF, Oct. 2003.
[7] W.-H. Park and S. Bahk, “Resource management policies for fixed relays in cellular networks,” IEEE GLOBECOM, Nov. 2006.
[8]I-K. Fu, W.-H. Sheen and F.-C. Ren, “Deployment and Radio Resource Reuse in IEEE 802.16j Multi-hop Relay Network in Manhattan-like Environment,” 6th International Conference on Information, Communications & Signal Processing, Dec. 2007.
[9] X. Guo, W. Ma, Z. Guo, X. Shen and Z. Hou, “Adaptive Resource Reuse Scheduling for Multihop Relay Wireless Network Based on Multicoloring,” IEEE Communications Letters, Vol. 12, No. 3, Mar. 2008.
[10] IEEE Std 802.16-2004, “Part 16: Air interface for fixed broadband wireless access systems,” Oct. 2004.
[11] T. Starr, J. Cioffi and P. Silverman, “Understanding Digital Subscriber Line Technology,” Prentice-Hall, Inc., 1999.
[12] ANSI, “Carrier to Customer Installation – DS1 Metallic Interface,” American National Standards Institute (ANSI) T1.403, Feb. 1989.
[13] IEEE 802.14 Working Group, “Cable-TV Functional Requirements and Evaluation Criteria,” IEEE 802.14/94-002R2, Feb. 1995.
[14] IEEE 802.16’s Relay Task Group, http://ieee802.org/16/relay
[15] ETSI EN 300 744 v1.5.1, “Digital Video Broadcasting (DVB): Framing structure, channel coding and modulation for digital terrestrial television,” ETSI, Jun. 2004.
[16] IEEE Std 802.11a-1999, “Supplement to Standard for Information Technology - Telecommunications and Information Exchange Between Systems - Local and Metropolitan Area Networks - Specific Requirements - Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: high-speed physical layer in the 5 GHz band.” 1999.
[17] IEEE Std 802.11g-2003, “IEEE Standard for Information technology, telecommunications and information exchange between systems, local and metropolitan area networks, specific requirements, Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications. Amendment 4: further higher-speed physical layer extension in the 2.4 GHz band.” 2003.
[18] W.-P. Chen, C. Zhu, C.-F. Su and J. Agre, “Resource reuse and interference management mechanism,” IEEE C802.16j-06/148r1, Nov. 2006.
[19] V. Genc, S. Murphy and J. Murphy, “Performance Analysis of Transparent Relays in 802.16j MMR Networks,” 6th International Symposium on WiOPT, Apr. 2008.
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top
無相關期刊