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研究生:高宏德
研究生(外文):Kao,Hung-Te
論文名稱:IEEE 802.11ax標準及其隨機存取協定
論文名稱(外文):IEEE 802.11ax standard and Its Random Access protocol
指導教授:鄧德雋鄧德雋引用關係
指導教授(外文):Deng, Der-Jiunn
口試委員:黃悅民余啟民鄧德雋
口試委員(外文):Huang, Yueh-MinYu, Chi-MinDeng, Der-Jiunn
口試日期:2017-07-29
學位類別:碩士
校院名稱:國立彰化師範大學
系所名稱:資訊工程學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2017
畢業學年度:105
語文別:英文
論文頁數:30
中文關鍵詞:OFDMA隨機存取IEEE 802.11ax高效率無線區域網路多用戶傳輸性能分析無線區域網路
外文關鍵詞:UL OFDMA RAIEEE 802.11axHEWMU-MIMOperformance analysisWLAN
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隨著Wi-Fi的配置越來越多也越來越密集,傳統的802.11MAC層DCF接入方式的問題也越來越凸顯出來。為了提供密集場景高效率的無線區域網路(HEW)技術,IEEE 802.11成立了IEEE 802.11ax工作小組,針對密集分布場景的問題進行大幅度的修改。IEEE 802.11ax引入OFDMA,實現多用戶傳輸(MU),並且提出基於OFDMA的隨機存取協定。在本論文中,我們提供了一種簡單且準確的分析模型,用於在飽和條件下研究UL OFDMA RA的系統效率和延遲性能,並且進行模擬以驗證分析結果。此外,我們使用此分析模型來確定最大化系統效率並且歸類出系統參數對系統效率的最佳化規則。
Recently, a revolutionary effort to seek fundamental improvement of 802.11, known as IEEE 802.11ax, has been approved to deliver high efficiency wireless local area network (HEW) technologies for dense scenario. The de-facto random access mechanism of IEEE 802.11ax is uplink OFDMA-based random access (UL OFDMA RA) mechanism. In this thesis, we provide a simple but accurate analytical model to study the system efficiency and delay performance of UL OFDMA RA under saturated condition, in the assumption of a finite number of stations and ideal channel conditions in a single-hop WLAN. Simulations are conducted to validate analytical results. In addition, we use this analytical model to identify an appropriate OFDMA-based random access parameter set (RAPS) that maximizes the system efficiency, a feature which is essential for system design and configuration.
中文摘要 I
Abstract II
Chapter 1 Introduction 1
Chapter 2 Instability of DCF 3
Chapter 3 Related Works 5
Chapter 4 Preliminary 7
4.1 MU-MIMO 7
4.2 UL OFDMA Random Access 10
Chapter 5 Analytical Model 12
5.1 Packet Transmission Probability 12
5.2 Random Access Efficiency 17
5.3 Model Validation 18
Chapter 6 Performance Evaluation 20
6.1 Maximum System Efficiency and Minimum Access Delay 20
6.2 Effects of System Parameter 21
Chapter 7 Conclusion 28
Reference 29
[1] D.-J. Deng, S.-Y. Lien, J. Lee, and K.-C. Chen, "On Quality-of-Service Provisioning in IEEE 802.11ax WLANs", IEEE Access, vol. 4, pp. 6086-6104, Aug. 2016.
[2] Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications: Amendment 6: Enhancements for high efficiency in frequency bands between 1 GHz and 6 GHz, IEEE Standard 802.11ax draft 1.1, 2017.
[3] F. Tobagi and L. Kleinrock, "Packet switching in radio channels: Part ii–the hidden terminal problem in carrier sense multiple-access and the busy-tone solution", IEEE Transactions on communications, vol. 23, no. 12, pp. 1417–1433, Dec. 1975.
[4] D. P. Bertsekas, R. G. Gallager, and P. Humblet, "Data networks." Prentice-Hall International New Jersey, vol. 2, 1992.
[5] G. Bianchi, "Performance analysis of the IEEE 802.11 distributed coordination function", IEEE Journal on selected areas in communications, vol. 18, no. 3, pp.535–547, 2000.
[6] C.-H. Wei, R.-G. Cheng and S.-L. Tsao, "Modeling and Estimation of One-Shot Random Access for Finite-User Multichannel Slotted ALOHA Systems", IEEE Communications Letters, Vol. 16, NO.8, pp.1196-1199, 2012.
[7] D.-X. Shen, Victor O.K. Li, "Performance Analysis for A Stabilized Multi-channel Slotted ALOHA Algorithm", Proc. IEEE 2003 International Symposium on Persona1, Indoor and Mobile Radio Communication Proceedings, pp.249-253, 2003.
[8] J.-B. Seo and Victor C. M. Leung, "Design and Analysis of Backoff Algorithms for Random Access Channels in UMTS-LTE and IEEE 802.16 Systems", IEEE Transactions on vehicular technology", vol. 60, no. 8, pp. 3975-3989, 2011.
[9] S.-K. Kim, J.-S. Cha, S.-J. Jung, C.-S. Yoon, and K.-J. Lim, "Performance Evaluation of Random Access for M2M Communication on IEEE 802.16 Network", Proc. ICACT2012, pp.278-283,2012.
[10] P. Zhou, H.-L. Hu, H.-F. Wang and H.-H. Chen, "An Efficient Random Access Scheme for OFDMA Systems with Implicit Message Transmission", IEEE Transactions on wireless communications, vol. 7, no. 7, pp.2790-2797, 2008.
[11] C.-H. Wei, Giuseppe Bianchi, and R.-G. Cheng, "Modeling and Analysis of Random Access Channels With Bursty Arrivals in OFDMA Wireless Networks", IEEE Transactions on wireless communications, vol. 14, no. 4, pp. 1940-1953, 2015.
[12] H.-J. Kwon, H.-B. Seo, S.-W. Kim, and B.-G Lee, "Generalized CSMA/CA for OFDMA Systems: Protocol Design, Throughput Analysis, and Implementation Issues", IEEE Transactions on wireless communications, vol. 8, no. 8, pp.4176-4187, 2009.
[13] Y.-J. Choi, S.-H. Park, and S.-W. Bahk, "Multichannel Random Access in OFDMA Wireless Networks", IEEE journal on selected areas in communications, vol. 24, no. 3, pp.603-613, 2006.
[14] Tatsumi Uwai, Takuma Miyamoto, Yuhei Nagao, Leonardo Lanante Jr., Masayuki Kurosaki and Hiroshi Ochi, "Performance Evaluation of OFDMA Random Access in IEEE802.11ax", Proc. ISPACS 2016, 2016.
[15] D.-J. Deng, Y.-P Lin, X. Yang, J. Zhu, Y.-B. Li, J. Luo and K.-C. Chen, "IEEE 802.11ax –High Efficient WLANs for Intelligent Information Infrastructure", IEEE Wireless Communications Magazine to be published.
[16] Yang Hang, “Performance Analysis of IEEE 802.11ax OFDMA-based Random Access”, Dec. 2016, Master’s thesis, Department of Electrical Engineering, National Taiwan University.
[17] Yang Hang, D. J. Deng, and K.-C. Chen, " Performance Analysis of IEEE 802.11ax UL OFDMA-Based Random Access Mechanism", IEEE GLOBECOM 2017 to be published.
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