以作者查詢圖書館館藏

、以作者查詢臺灣博碩士

、以作者查詢全國書目

、勘誤回報

、線上人數：22

、訪客IP：3.139.72.200

姓名	李育丞(Yu-Cheng Li)  查詢紙本館藏	畢業系所	資訊工程學系
論文名稱	一種減輕LEO衛星網路干擾的方案 (An Interference Mitigation Scheme for LEO Satellite Networks)
檔案	[Endnote RIS 格式]    [Bibtex 格式]    [相關文章]   [文章引用]   [完整記錄]   [館藏目錄]   至系統瀏覽論文 ( 永不開放)
摘要(中)	地面5G毫米波通訊基地台與使用Ka頻段低軌道衛星(Low Earth Orbit, LEO) 有部分頻段重疊，會造成同頻率干擾。同頻率干擾可分為兩種類型：衛星波束之間的干擾、地面通訊與衛星之間的干擾。過去常用的靜態分頻方式雖然減少了干擾，但是犧牲了資源利用率，且不適用於現今的低軌道衛星場景。由於低軌道衛星高速移動的特性，地面基地台受到低軌道衛星干擾的頻段亦頻繁改變。本論文考慮低軌道衛星使用波束跳躍(Beam Hopping) ，以降低衛星波束之間的干擾，並使用全頻率複用(Full Frequency Reuse) 以提升衛星傳輸效率。在我們的方法中，為提升地面傳輸率會額外使用衛星頻段，但這會導致地面基地台干擾衛星使用者。地面基地台會根據低軌道衛星的移動動態地調整其重疊頻段上傳輸功率大小或是分配ABS 樣式，以減少地面基地台對衛星接收端的干擾。最後模擬結果顯示，我們的方法增加了整體傳輸率且也降低的對衛星使用者的干擾。
摘要(英)	The terrestrial base station with millimeter-wave and Ka band LEO satellite overlap partial frequency band, and exist the cochannel interference. The cochannel interference can be divided into two types: interference between satellite beams, and interference between terrestrial networks and satellites. Although the previously fixed frequency division method reduces the interference, it sacrifices spectral efficiency and is not suitable for LEO satellite scenarios. Due to the highspeed movement of LEO satellites, the frequency band of terrestrial base stations interfered by LEO satellites also changes frequently. This paper considers adopting Beam Hopping to reduce interference between satellite beams, and using Full Frequency Reuse to improve satellite spectral efficiency. In our method, the terrestrial base stations will additionally transmit in the satellite frequency band to enhance the data rate, but this will cause terrestrial base stations to interfere with satellite users. The terrestrial base station will dynamically adjust the transmission power in the overlapping frequency band or allocate the ABS pattern according to the movement of the LEO satellite to mitigate the interference with the satellite users. Finally, the simulation shows that our methods enhance the data rate and mitigate the interference.
關鍵字(中)	★ 低軌道衛星 ★ 同頻干擾 ★ 波束跳躍 ★ 頻率複用	關鍵字(英)	★ LEO satellite ★ Co-channel interference ★ Beam Hopping ★ Frequency reuse
論文目次	中文摘要 i Abstract ii Acknowledgments iii Contents iv List of Figures vi List of Tables vii 1 緒論 1 2 研究背景 5 2.1 降低衛星波束間干擾. . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2 降低地面與衛星間干擾. . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 系統模型 11 3.1 架構. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3.2 下行鏈路計算. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.2.1 衛星使用者. . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.2.2 地面使用者. . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.3 資源分配. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4 方法 18 4.1 降低衛星波束之間干擾. . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.1.1 波束跳躍. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 4.2 降低地面與衛星之間干擾. . . . . . . . . . . . . . . . . . . . . . . . . 22 4.2.1 軟頻率複用與功率調整. . . . . . . . . . . . . . . . . . . . . . 23 4.2.2 幾乎空白子訊框. . . . . . . . . . . . . . . . . . . . . . . . . . 24 5 實驗模擬 25 5.1 環境場景. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 5.2 效能衡量. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 5.3 單一場景. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 5.3.1 訊噪比. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 5.3.2 資料傳輸率. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 5.4 波束跳躍. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 5.4.1 需求流量與給予流量. . . . . . . . . . . . . . . . . . . . . . . 35 6 結論 39 Bibliography 40
參考文獻	[1] V. Deslandes, J. Tronc, and A. Beylot, “Analysis of interference issues in Integrated Satellite and Terrestrial Mobile Systems,” in 2010 5th Advanced Satellite Multimedia Systems Conference and the 11th Signal Processing for Space Communications Workshop, 2010, pp. 256–261. [2] R. Bi, M. Yang, and G. Wang, “Interference and Link Budget Analysis in Integrated Satellite and Terrestrial Mobile system,” in 2018 International Symposium on Networks, Computers and Communications (ISNCC), 2018, pp. 1–6. [3] G. Giambene, V. A. Le, T. Bourgeau, and H. Chaouchi, “Soft frequency reuse schemes for heterogeneous LTE systems,” in 2015 IEEE International Conference on Communications (ICC), 2015, pp. 3161–3166. [4] M. Jia, X. Zhang, Q. Guo, and X. Gu, Joint Optimization of Resource Allocation with Interbeam Interference for a Multibeam Satellite and Terrestrial Communication System, 08 2019, pp. 151–167. [5] 3GPP, “3rd Generation Partnership Project;Technical Specification Group Radio Access Network;Solutions for NR to support non-terrestrial networks (NTN) (Release 16),” 3rd Generation Partnership Project (3GPP), Technical Report (TR) 38.821, 09 2019, version 0.8.0. [6] CelesTrak, “Norad two-line element sets current data,” [Online; accessed 27July2020]. [Online]. Available: https://www.celestrak.com/NORAD/elements/ [7] DVBS2,“Second generation framing structure, channel coding and modulation systems for Broadcasting, Interactive Services, News Gathering and other broadband satellite applications part 2: DVBS2 Extensions (DVBS2X),”European Telecommunications Standards Institute(ETSI), Tech. Rep. 302 307 2, 02 2020, version 1.2.1. [8] Y. Couble, C. Rosenberg, E. Chaput, J. Dupé, C. Baudoin, and A. Beylot, TwoColor Scheme for a MultiBeam Satellite Return Link: Impact of Interference Coordination,” IEEE Journal on Selected Areas in Communications, vol. 36, no. 5, pp. 993–1003, 2018. [9] M. G. Kibria, E. Lagunas, N. Maturo, D. Spano, and S. Chatzinotas, “Precoded Cluster Hopping in MultiBeam High Throughput Satellite Systems,” in 2019 IEEE Global Communications Conference (GLOBECOM), 2019, pp. 1–6. [10] V. Joroughi, E. Lagunas, S. Andrenacci, N. Maturo, S. Chatzinotas, J. Grotz, and B. Ottersten, “DEPLOYING JOINT BEAM HOPPING AND PRECODING IN MULTIBEAM SATELLITE NETWORKS WITH TIME VARIANT TRAFFIC,” in 2018 IEEE Global Conference on Signal and Information Processing (GlobalSIP), 2018, pp. 1081–1085. [11] S. Shi, G. Li, Z. Li, H. Zhu, and B. Gao, “Joint power and bandwidth allocation for beamhopping user downlinks in smart gateway multibeam satellite systems”,”International Journal of Distributed Sensor Networks, vol. 13, no. 5, p. 1550147717709461, 2017. [12] D. Xu, G. Zhang, and X. Ding, “Analysis of Co-channel Interference in Loworbit Satellite Internet of Things,” in 2019 15th International Wireless Communications Mobile Computing Conference (IWCMC), 2019, pp. 136–139. [13] S. Zhang, X. Shao, M. Yang, and X. Liu, “Soft Frequency Reuse Scheme based Frequency Sharing in Satellite Terrestrial Integrated Mobile Communication System,” 10 2017. [14] R. K. Saha, “A Hybrid System and Technique for Sharing Multiple Spectrums of Satellite Plus Mobile Systems With Indoor Small Cells in 5G and Beyond Era,” IEEE Access, vol. 7, pp. 77 569–77 596, 2019. [15] 3GPP, “3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Study on New Radio (nr) to support non-terrestrial Networks (Release 15),” 3rd Generation Partnership Project (3GPP), Technical Report (TR) 38.811, 06 2019, version 15.1.0. [16] ——, “5G;Study on channel model for frequencies from 0.5 to 100 GHz,” 3rd Generation Partnership Project (3GPP), Technical Report (TR) 38.901, 01 2018, version 14.3.0. [17] ——, “5G;NR;Physical layer procedures for data,” 3rd Generation Partnership Project (3GPP), Technical Report (TR) 38.214, 07 2018, version 15.2.0. [18] S. M. R. Islam, N. Avazov, O. A. Dobre, and K. Kwak, “PowerDomain Non-Orthogonal Multiple Access (NOMA) in 5G Systems: Potentials and Challenges,”IEEE Communications Surveys Tutorials, vol. 19, no. 2, pp. 721–742, 2017. [19] 3GPP, “5G;NR;User Equipment (UE) radio access capabilities,” 3rd Generation Partnership Project (3GPP), Technical Specification (TS 38.306, 09 2018, version 15.2.0. [20] I. A. Hemadeh, K. Satyanarayana, M. ElHajjar, and L. Hanzo, “Millimeter-Wave Communications: Physical Channel Models, Design Considerations, Antenna Constructions, and LinkBudget,” IEEE Communications Surveys Tutorials, vol. 20, no. 2, pp. 870–913, 2018.
指導教授	何錦文 張貴雲(Chin-Wen Ho Guey-Yun Chang)	審核日期	2020-8-20
推文	facebook   plurk   twitter   funp   google   live   udn   HD   myshare   reddit   netvibes   friend   youpush   delicious   baidu
網路書籤	Google bookmarks   del.icio.us   hemidemi   myshare