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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 周俊廷(Chun-Ting Chou) | |
dc.contributor.author | Chun-Ting Lin | en |
dc.contributor.author | 林俊廷 | zh_TW |
dc.date.accessioned | 2021-06-17T08:11:57Z | - |
dc.date.available | 2022-08-29 | |
dc.date.copyright | 2019-08-29 | |
dc.date.issued | 2019 | |
dc.date.submitted | 2019-08-15 | |
dc.identifier.citation | REFERENCES
[1] 3rd Generation Partnership Project, “Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures (3GPP TS 36.213),“ 2018 [2] 3rd Generation Partnership Project, “3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Study on Licensed-Assisted Access to Unlicensed Spectrum; (Release 13),” 2015 [3] Hwan-Joon Kwon, Jeongho Jeon, Abhijeet Bhorkar, and Qiaoyang Ye, “Licensed-Assisted Access to Unlicensed Spectrum in LTE Release 13,” IEEE Communications Magazine, vol. 55, no., pp. 201-207, Dec. 2016. [4] LAN Standards Committee of the IEEE Computer Society, “Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications,” 2016 [5] Rachid Ali, Arslan Musaddiq, Byung-Seo Kim, Sung Won Kim, “Fair and Efficient Channel Observation-Based Listen-Before Talk (CoLBT) for LAA-WiFi Coexistence in Unlicensed LTE,” Tenth International Conference on Ubiquitous and Future Networks (ICUFN), Aug. 2018 [6] Wei Wang, Pingping Xu, Yuan Zhang, Hongyun Chu, “Performance Analysis of LBT Cat4 Based Downlink LAA-WiFi Coexistence in Unlicensed Spectrum,” IEEE Global Communications Conference (GLOBECOM), Feb. 2017. [7] Wei Wang, Pingping Xu, Yuan Zhang, Hongyun Chu, “Network-Sensitive Adaptive LAA LBT Strategy for Downlink LAA-WiFi coexistence,” 9th International Conference on Wireless Communications and Signal Processing (WCSP), Dec. 2017. [8] Xiaojing Yan, Hui Tian, Cheng Qin, “A Markov-based Modelling with Dynamic Contention Window Adaptation for LAA and WiFi Coexistence,” IEEE 85th Vehicular Technology Conference (VTC Spring), Nov. 2017. [9] Ananth V. Kini, Canonne-Velasquez, Mohsen Hosseinian, Marian Rudolf, Janet Stern-Berkowitz, “Wi-Fi-LAA Coexistence: Design and Evaluation of Listen Before Talk for LAA,” Annual Conference on Information Science and Systems (CISS), Apr. 2016. [10] Xin Zhang, Zhaoming Lu, Xiangming Wen, Wenpeng Jing, Hang Qi, “A Fair and Efficient Channel Access Approach Based on CSMA with Enhanced Collision Avoidance for LAA,” IEEE Wireless Communications and Networking Conference (WCNC), Jun. 2018. [11] Sungjin You, Seungkeun Park, “Channel Occupancy Time Influence on LTE and Wi-Fi Coexistence Performance,” International Conference on Information and Communication Technology Convergence (ICTC), Dec. 2017. [12] Morteza Mehrnoush, Vanlin Sathya, Sumit Roy, “Analytical Modeling of Wi-Fi and LTE-LAA Coexistence: Throughput and Impact of Energy Detection Threshold,” IEEE/ACM Transactions on Networking, vol. 26, no., pp. 1990-2003, Aug. 2018. [13] Mohaqmad Omar Al Kalla, Seth J. Seidman, “On the Coexistence of LTE-LAA in the Unlicensed,” NAIM BITAR, IEEE Access, pp. 52668 – 52681, Sep. 2018. [14] Nagapriyanka Parvathareddy, Varada Potnis Kulkarni, “Adaptive Freezing of Backoff in LAA-LTE,” IEEE International Conference on Advanced Networks and Telecommunications Systems (ANTS), Dec. 2017. [15] Yu Zhang, Yongyu Chang, Tianyi Zeng, “Coexistence Performance Analysis of LAA Based on Release 13,” International Symposium on Wireless Communication Systems (ISWCS), Nov. 2017. [16] Jie Xiao, Jun Zheng, Liangyu Chu, Qilei Ren, “Performance Modeling of LAA LBT with Random Backoff and a Variable Contention Window,” 10th International Conference on Wireless Communications and Signal Processing (WCSP), Dec. 2018. [17] Abdel-karim Ajami, Hassan Artail, “Fairness in Future Licensed Assisted Access LAA LTE Networks What Happens When Operators Have Different Channel Access Priorities,” IEEE International Conference on Communications Workshops (ICC Workshops), Jul. 2017. [18] Giuseppe Bianchi, “Performance Analysis of the IEEE 802.11 Distributed Coordination Function,” IEEE Journal on Selected Areas in Communications, vol. 18, no., pp. 535-547, Mar. 2000. [19] Qualcomm, “Progress on Licensed-Assisted Access (LAA) and Its Relationship to LTE-U and MulteFire,” 2018 [20] Hu Yi, Yang Liu, Fan Pingzhi, Fang Sangsha, Ma Yongfu, “An Adaptive Access Control Mechanism for LAA and Wi-Fi Coexistence in Unlicensed Band,” IEEE International Conference on Computer and Communications (ICCC), 26 March 2018 [21] Andres Garcia-Saavedra, Paul Patras, Victor Valls, “ORLA/OLAA: Orthogonal Coexistence of LAA and WiFi in Unlicensed Spectrum,” IEEE/ACM Transactions on Networking, vol. 26, no., pp. 2665-2678, 12 November 2018 [22] Mohamed Salem, Amine Maaref, “A MAC Solution for Distributed Coordination of 5G LAA Operator Networks and Fair Coexistence with WLAN in Unlicensed Spectrum,” IEEE Wireless Communications and Networking Conference, 3-6 April 2016 [23] Shiying Han, Ying-Chang Liang, Qian Chen, Boon-Hee Soong, “Licensed-Assisted Access for LTE in Unlicensed Spectrum: A MAC Protocol Design,” IEEE Journal on Selected Areas in Communications, vol. 34, no., pp. 2550-2561, 02 September 2016 [24] Bolin Chen, Jiming Chen, Yuan Gao, Jie Zhang, “Coexistence of LTE-LAA and Wi-Fi on 5 GHz With Corresponding Deployment Scenarios: A Survey,” IEEE Communications Surveys & Tutorials, vol. 19, no., pp. 7-32, 27 July 2016 [25] Yubing Jian, Chao-Fang Shih, Bhuvana Krishnaswamy, Raghupathy Sivakumar, “Coexistence of Wi-Fi and LAA-LTE: Experimental Evaluation, Analysis and Insights,” 2015 IEEE International Conference on Communication Workshop (ICCW), 8-12 June 2015 [26] Zhenzhou Tang, Xuesgeng Zhou, Qian Hu, Guading Yu, Wenzhou, “Throughput Analysis of LAA and Wi-Fi Coexistence Network With Asynchronous Channel Access,” IEEE Access, vol. 6, no., pp., 07 February 2018 [27] Yuan Gao, Qing Huang, Shaoyi Xu, Hantao Li, Zhenyu Li, Wenfang Tang, “Experimental Performance Evaluation and Analysis of LAA and Wi-Fi Coexistence in the Unlicensed Spectrum,” IEEE International Conference on Communications (ICC), 14 July 2016 [28] Cheng Che, Rapeepat Ratasuk, Amitava Ghosh, “Downlink Performance Analysis of LTE and WiFi Coexistence in Unlicensed Bands with a Simple Listen-before-talk Scheme,” IEEE 81st Vehicular Technology Conference (VTC Spring), 02 July 2015 [29] Long Li, Amir Hossei Jafar, Xiaoli Chu, Jie Zhang1, “Simultaneous Transmission Opportunities for LTE-LAA Smallcells Coexisting with WiFi in Unlicensed Spectrum,” IEEE International Conference on Communications (ICC), 14 July 2016 | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/73854 | - |
dc.description.abstract | 為了滿足第五代無線網絡的期望,第三代合作夥伴計劃(3GPP)於第13版中提出免執照頻譜輔助接取技術(LAA)的技術規範,而引入LAA會有兩項主要議題,第一項議題為相互競爭的LAA裝置之間的公平性,第二項議題為LAA與既有的IEEE 802.11設備在5.8 GHz頻段共存情況。
對於第一項議題,子幀邊界的偏移值和優先權設定將會影響各個LAA小細胞站的吞吐量,因此,我們在給定子幀邊界和優先權設定的條件下提出理論分析模型,並能以此計算各個LAA小細胞站的吞吐量,而有了理論分析模型之後,我們可以控制每個LAA小細胞站其吞吐量的比例,並能以此達到不同小細胞站之間的加權公平性。 對於第二項議題,大多數相關文獻聚焦於LAA小細胞站是否會讓IEEE 802.11ac裝置其效能下滑,非常少的研究討論LAA小細胞站和IEEE 802.11裝置是否能夠在公平分享頻譜資源的條件下,彼此之間友好地共存。在本文中,我們將說明在適當的封包長度和優先權的設定下,一對LAA小細胞站和一對IEEE 802.11ac裝置能夠公平且友善地共存。 | zh_TW |
dc.description.abstract | In order to meet the expectation of the 5th generation wireless network, Licensed-assisted-access (LAA) technique is proposed in the 3rd generation partnership project (3GPP) Release 13. There are two main issues with the introduction of LAA. The first issue is the fairness among competing LAA small cells. The second issue is the coexistence between LAA and the incumbent IEEE 802.11 devices in 5.8 GHz bands.
For the first issue, the subframe boundary offsets and the priority class of different LAA small cells will affect the individual throughput. Thus, we proposed a theoretical model based on the given subframe boundary and the priority class. The individual throughput can be derived with the proposed theoretical model. With the theoretical model, the individual throughput ratio is controllable to achieve weighted fairness. For the second issue, most of the related work focuses on whether LAA small cells will degrade the performance of IEEE 802.11ac devices or not. There are very few works discussing whether LAA and IEEE 802.11ac devices can be friendly to each other while achieving a fair share of the spectrum resources. In this thesis, we will show that an LAA small cell is able to be fairly and friendly to an IEEE 802.11ac device with appropriate settings of the frame size and the priority class of the LAA small cell. | en |
dc.description.provenance | Made available in DSpace on 2021-06-17T08:11:57Z (GMT). No. of bitstreams: 1 ntu-108-R06942121-1.pdf: 2116200 bytes, checksum: cde50b14d170818a9f845594340022f6 (MD5) Previous issue date: 2019 | en |
dc.description.tableofcontents | TABLE OF CONTENTS
ABSTRACT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii LIST OF TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii LIST OF FIGURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii CHAPTER 1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Licensed-assisted-access for Licensed Band LTE . . . . . . . . . . . . . . . . . . . . 1 Coexistence of LAA and IEEE 802.11ac Devices . . . . . . . . . . . . . . . . . . . . 1 1.3 Objectives and Contributions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.4 Thesis Organizations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 CHAPTER 2 RELATED WORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.1 Coexistence Issues among Competing LAA Small Cells . . . . . . . . . . . . . . 5 2.2 Coexistence Issues between LAA and IEEE 802.11ac Devices . . . . . . . . . 8 CHAPTER 3 SYSTEM SETTINGS AND ASSUMPTIONS . . . . . . . 10 3.1 Clear Channel Assessment (CCA) in LAA . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.1.1 Initial-CCA Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.1.2 Extended-CCA Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.1.3 GAP Period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.1.4 Adjustment of the Contention Window Size . . . . . . . . . . . . . . . . . . 14 3.2 Listen-before-talk Procedure in IEEE 802.11ac . . . . . . . . . . . . . . . . . . . . . 15 CHAPTER 4 COEXISTENCE AMONG COMPETING LAA SMALL CELLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.1 Theoretical Modeling for Two Pairs of LAA Small Cells . . . . . . . . . . . . . 19 4.1.1 Case 1: Offset< Td,β . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.1.2 Case 2: Td,β+CWmin,β*9 < offset . . . . . . . . . .. . . . . . . . 22 4.1.3 Case 3: Td,β ≤ offset ≤ Td,β+CWmin,β*9 . . . . . . . . . . . . . . . . 23 4.2 Theoretical Modeling for Multi-pair of LAA Small Cells . . . . . . . . . . . . . 31 4.3 Fairness among Collocated LAA Small Cells . . . . . . . . . . . . . . . . . . . . . . 35 CHAPTER 5 COEXISTENCE BETWEEN LAA AND IEEE 802.11AC DEVICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 5.1 Coexistence among Competing IEEE 802.11ac Devices . . . . . . . . . . . . . . 38 5.2 Coexistence among Collocating LAA and IEEE 802.11ac Devices . . . . . 39 CHAPTER 6 CONCLUSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48 REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49 | |
dc.language.iso | en | |
dc.title | 授權輔助接取技術在 5.8 GHz 頻段之共存分析 | zh_TW |
dc.title | Coexistence of Licensed-assisted-access (LAA)
in 5.8 GHz Bands | en |
dc.type | Thesis | |
dc.date.schoolyear | 107-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 張時中(Shi-Chung Chang),蔡志宏(Zse-hong Tsai),謝宏昀(Hung-Yun Hsieh) | |
dc.subject.keyword | 免執照頻譜輔助接取技術,頻譜分享,共存,理論模型,干擾, | zh_TW |
dc.subject.keyword | LAA,Spectrum sharing,Coexistence,Theoretical model,Interference, | en |
dc.relation.page | 52 | |
dc.identifier.doi | 10.6342/NTU201903684 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2019-08-15 | |
dc.contributor.author-college | 電機資訊學院 | zh_TW |
dc.contributor.author-dept | 電信工程學研究所 | zh_TW |
顯示於系所單位: | 電信工程學研究所 |
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