Empirical Study on IEEE 802.11 Wireless Signal – A Case Study at the NCU Campus

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姓名

茱莉(Juli Dutta) 查詢紙本館藏

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資訊管理學系

論文名稱

Empirical Study on IEEE 802.11 Wireless Signal – A Case Study at the NCU Campus
(Empirical Study on IEEE 802.11 Wireless Signal – A Case Study at the NCU Campus)

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摘要(中)

在這裡，我們報告的信號強度上的文件傳輸和下載和上傳速度的影響進行實驗研究。我們使用一對筆記本電腦，一台iPad，在計算機中心和管理樓宇國立中央大學移動和TP-LINK無線接入點和結果它們之間做了一個對比進行了多次實驗。可以看出大信號覆蓋範圍和更高的下載和上傳速度在計算機中心的建設比管理建設。顯然，下載和上傳速度在所有的實驗地點迅速衰減距離接入點15米。視線堵塞的牆壁上發現有在的Wi-Fi鏈路吞吐量的顯著作用。

摘要(英)

Here we report an experimental investigation of the impact of signal strength on the file transfer and download and upload speeds. We have conducted several experiments using a pair of laptops, an ipad, a mobile and tp-link access point at the computer center and management buildings at National Central University and a comparison of results is made between them. It is seen large signal coverage area and higher downloads and uploads speed at computer center building than management building. Apparently, the download and upload speeds at all the experimental locations decay rapidly within 15 meters from the access point. Line-of-sight blockage by the walls is found to have the significant effect on the Wi-Fi link throughput.

關鍵字(中)

★ 無線網絡連接
★ 無線網絡的性能
★ IEEE 802.11
★ 的無線傳播環境

關鍵字(英)

★ Wi-Fi
★ Wireless networks performance
★ IEEE 802.11
★ radio propagation environments

論文目次

Abstract in English ……………………………………………….i
Abstract in Chinese …………………………………ii
Acknowledgements………………………………………… iii
Table of Contents…………………………………………………………………iv
List of abbreviations and notations…………………vi
List of Tables……………………………………………viii
List of Figures………………………………………………ix
Chapter 1 Introduction…………………………………1
1.1 Motivation ……………………………………………………………1
1.2 Objectives of This Research …………………………………3
1.3 Thesis Overview………………………………………………3
Chapter 2 Wireless Background and Related Research Works …4
2.1 Wireless Fidelity (Wi-Fi) ………………………………………..4
2.2 Overview of IEEE 802.11 ……………………………………………5
2.3 IEEE 802.11 Protocol ........................10
2.3.1 IEEE 802.11 Physical Layer (PHY) ………………………11
2.3.2 IEEE 802.11 Medium Access Control Layer (MAC) …11
2.4 RF Fundamentals for WLANs …………………………………….12
2.4.1 Propagation Characteristics Must Be Considered…12
2. 5 WLAN Signal Strength Measurement…………………13
2.5.1 WLAN Performance ………………………13
2.5.2 Base Station Placement …………………………15
2.5.3 Impact of Signal Quality on WLAN Performance …… 17
2.5.4 Conditions for better WLAN Performance Measurement ……………………19
Chapter 3 Research Methodology and Experimental Details ………21
3.1 Research Methodology………………………………21
3.2 Experimental details ………………………………………………………………….23
3.2.1 Hardware components ………………………………………………………...23
3.2.2 Software ……………………………………………………………………….25
3.2.3 Measurement scenarios ……………………………………………………….27
Chapter 4 Results and Discussions ……………………………………….30
4.1 WLAN performance measurement using TP-link AP……………………………….30
4.1.1 At the computer center of NCU………………………………………………..30
4.1.2 Line-of-sight blockage experiment at the computer center of NCU……………33
4.1.3 At the 9th floor of management building 2 of NCU…………………………….35
4.2 WLAN performance measurement …………………………………………………..40
4.2.1 MGT-I1-1F-103 at the 1st floor of management building 2 ……………………40
4.2.2 MGT-I1-9F-903 at the 9th floor of management building 2 ……………………42
4. 2.3 at different locations inside the campus………………………………………..44
Chapter 5 Conclusions and Future work ………………………………47
5.1 Conclusions …………………………………………………………………………..47
5.2 Future work …………………………………………………………………………..48
References ………………………………………………………………….50

參考文獻

[1] F. Ye, H. Yang, and B. Sikdar, "Enhancing MAC Coordination to Boost Spatial Reuse in IEEE 802.11 Ad Hoc Networks," presented at IEEE International Conference on Communications, pp. 3814-3819, 2006.

[2] P. Chatzimisios, A. C. Boucouvalas, and V. Vitsas, "Performance analysis of IEEE 802.11 DCF in presence of transmission errors," presented at IEEE International Conference on Communication, pp. 3854-3858, 2004.

[3] L. Zhang, Y. Shu, and W. W. Yang, "Performance Improvement for 802.11 Based Wireless Local Area Networks," presented at IEEE International Conference on Communications, pp. 4774-4779, 2006.

[4] IEEE 802.11, Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications, Standard. IEEE. 1997
[5] J. K. L. Wong, A. J. Mason, M. J. Neve, and K. W. Sowerby, "Base station placement in indoor wireless systems using binary integer programming," IEE Proceedings Communications, vol. 153, no. 5, pp. 771-778, 2006.

[6] Z. Jin, X. Wu, Y. Shu, and F. Liu, "Optimal placement of multiple 802.11B APS in a wireless classroom," presented at IEEE Canadian Conference on Electrical and Computer Engineering, pp. 741-744, 2003.

[7] K. Papagiannaki, M. Yarvis, and W. S. Conner, "Experimental Characterization of Home Wireless Networks and Design Implications," presented at Proceedings IEEE International Conference on Computer Communications, pp. 1-13, 2006.

[8] IEEE 80211 Standard 1999 Edition (R2003), "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,", 2003.

[9] J. Khan and A. Khwaja, Building Secure Wireless Networks with 802.11. Indianapolis: Wiley Publishing, Inc., 2003.

[10] N. Prasad, A. Prasad, A. Kamerman, H. Moelard, and L. Brederveld, WLAN Systems and Wireless IP for Next Generation Communications. Boston: Artech House, 2002.

[11] IEEE 802.11 Working Group. IEEE Standard 802.11-1999, Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specification, 1999.

[12] D. B. Green and M. S. Obaidat, "An accurate line of sight propagation performance model for ad-hoc 802.11 wireless LAN (WLAN) devices," presented at IEEE International Conference on Communications, pp. 3424-3428, 2002.

[13] G. Anastasi, E. Borgia, M. Conti, and E. Gregori, "Wi-Fi in ad hoc mode: a measurement study," presented at Proceedings of the Second IEEE Annual Conference on Pervasive Computing and Communications, pp. 145-154, 2004.

[14] S. Garg and M. Kappes, "Admission control for VoIP traffic in IEEE 802.11 networks," presented at IEEE Global Telecommunications Conference, pp. 3514-3518,2003.

[15] H. W. Tseng, A. C. Pang, C. F. Kuo, and S. T. Sheu, "Efficient and fast retransmission for wireless networks," Computer Communications, vol. 29, no. 15, pp. 2964-2974, 2006.

[16] T. Fruhwirth and P. Brisset, "Placing base stations in wireless indoor communication networks," IEEE Intelligent Systems and Their Applications, vol. 15, no. 1, pp. 49-53, 2000.

[17] K. W. Cheung and R. D. Murch, "Optimizing indoor base-station locations in coverage- and interference-limited indoor environments," presented at IEE Proceedings Communications, pp. 445-450, 1998.

[18] K. S. Butterworth, K. W. Sowerby, and A. G. Williamson, "Base station placement for in-building mobile communication systems to yield high capacity and efficiency," IEEE Transactions on Communications, vol. 48, no. 4, pp. 658-669, 2000.

[19] http://www.speedtest.net/

[20] D. Stamatelos and A. Ephremides, "Spectral efficiency and optimal base placement for indoor wireless networks," IEEE Journal on Selected Areas in Communications, vol. 14, no. 4, pp. 651-661, 1996.

[21] M. J. Neve and K. W. Sowerby, "Optimising the performance of indoor wireless communication systems," IEEE 49th Vehicular Technology Conference, pp. 968-972, 1999.

[22] M. Kobayashi, S. Haruyama, R. Kohno, and M. Nakagawa, "Optimal access point placement in simultaneous broadcast system using OFDM for indoor wireless LAN," presented at The 11th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, pp. 200-204, 2000.

[23] R. C. Rodrigues, G. R. Mateus, and A. A. F. Loureiro, "Optimal base station placement and fixed channel assignment applied to wireless local area network projects," presented at IEEE International Conference on Networks, pp. 186-192, 1999.

[24] T. Wang and H. H. Refai, "The development of an empirical delay model for IEEE 802.11 b/g based on SNR measurements," presented at 2005 International Conference on Wireless Networks, Communications and Mobile Computing, pp. 381-385, 2005.

[25] W. Ge, Y. Shu, L. Zhang, L. Hao, and W. W. Yang, "Measurement and Analysis of TCP Performance in IEEE 802.11 Wireless Network," presented at Canadian Conference on Electrical and Computer Engineering, pp. 1846-1849, 2006.

[26] D. Aguayo, J. Bicket, S. Biswas, G. Judd, R. Morris, and C. Mellon, "Link-level Measurements from an 802.11b Mesh Network," presented at Proceedings of the 2004 conference on Applications, technologies, architectures, and protocols for computer communications, pp. 121-132, 2004.

[27] K. K. Wong and T. O′Farrell, "Coverage of 802.11g WLANs in the presence of Bluetooth interference," presented at 14th IEEE Proceedings on Personal, Indoor and Mobile Radio Communications, pp. 2027-2031, 2003.

[28] C. Rose, S. Ulukus, and R. D. Yates, "Wireless systems and interference avoidance," IEEE Transactions on Wireless Communications, vol. 1, no. 3, pp. 415-428, 2002.

[29] J. K. L. Wong, M. J. Neve, and K. W. Sowerby, "Uplink and downlink SIR analysis for base station placement," presented at The 57th IEEE Semiannual Vehicular Technology Conference, pp. 112-116, 2003.

[30] P. Chatzimisios, A. C. Boucouvalas, and V. Vitsas, "Influence of channel BER on 802.11 DCF," IEE Electronics Letters, vol. 39, no. 23, pp. 1687-1689, 2003.

[31] M. N. Smadi and B. Szabados, "Error-recovery service for the IEEE 802.11b protocol," IEEE Transactions on Instrumentation and Measurement, vol. 55, no. 4, pp. 1377-1382, 2006.

[32] E. Pelletta and H. Velayos, "Performance measurements of the saturation throughput in IEEE 802.11 access points," presented at Third International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, pp. 129-138, 2005.

[33] M. Boulmalf, H. El-Sayed, and A. Soufyane, "Measured throughput and SNR of IEEE 802.11g in a small enterprise environment," presented at IEEE Vehicular Technology Conference, pp. 1333-1337, 2005.

[34] C. Xinjie, "Network simulations with OPNET," presented at Simulation Conference Proceedings, pp. 307-314, 1999.

[35] K. Kaemarungsi, "Distribution of WLAN received signal strength indication for indoor location determination," presented at 2006 1st International Symposium on Wireless Pervasive Computing, pp. 6-12, 2006.

[36] S. Ito and N. Kawaguchi, "Data Correction Method Using Ideal Wireless LAN Model in Positioning System," presented at IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications, pp. 1-5, 2006.

[37] J. A. Park, S. K. Park, D. H. Kim, P. D. Cho, and K. R. Cho, "Experiments on radio interference between wireless LAN and other radio devices on a 2.4 GHz ISM band," presented at The 57th IEEE Semiannual Vehicular Technology Conference, pp. 1798-1801, 2003.

[38] N. Chen, J. K. Chen, and T. S. Rappaport, "Measured Traffic Statistics and Throughput of IEEE 802.11b Public WLAN Hotspots with Three Different Applications," IEEE Transactions on Wireless Communications, vol. 5, no. 11, pp. 3296-3305, 2006.

[39] F. Li, M. Li, R. Lu, H. Wu, C. M., and K. R., "Tools and Techniques for Measurement of IEEE 802.11 Wireless Networks," presented at The 4th International Symposium on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks, pp. 1-8, 2006.

[40] S. Gopal and D. Raychaudhuri, "Experimental evaluation of the TCP simultaneous-send problem in 802.11 wireless local area networks," presented at Proceeding of the 2005 ACM SIGCOMM workshop on Experimental approaches to wireless network design and analysis, pp. 23-28, 2005.

[41] "Broadband speeds around the world". BBC News. December 2, 2007. Retrieved November 13, 2011.
[42] Matt Greenop, (July 27, 2007). "The truth about Kiwi broadband". The New Zealand Herald. Retrieved November 13, 2011.

[43] Terry Lane, (June 24, 2007). "Hey Telstra, forget about broadband". The Age. Retrieved November 13, 2011.

[44] http://en.wikipedia.org/wiki/Speedtest.net#cite_note-results-8

指導教授

李俊賢

審核日期

2014-6-30

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