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Wlan Performance Analysis for Indoor Environments

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Wlan Performance Analysis for Indoor Environments WLAN PERFORMANCE ANALYSIS FOR INDOOR ENVIRONMENTS Bachelor Thesis Supervisor: Prof. Dr.-Ing. Markus Rupp Assistants: Dipl.-Ing. Philipp Svoboda M.Sc. Çise Mıdoğlu SCIENCE AND TELECOMMUNICATION TECHNOLOGIES ENGINEERING By BARTOLOME OLIVER ARBONA Wien, July 2015 Abstract Studies report that in the next years there will be a high increase in the number of mobile devices, the overall data traffic generated by mobile devices, and a migration from larger cells towards Wireless Local Area Networks (WLAN) and smaller cells (picocells and femtocells). There is also a large amount of data that is estimated to be offloaded to Wi-Fi and small cells. Due to this estimated growth in the mobile data traffic over wireless environment; several companies are investing and focusing resources in improving their services mainly related with WLAN’s. The concerns of the industry are focused on examining the performance of WLAN’s, especially indoors, and finding ways to understand more about actual User Experience (UX) in real scenarios. These ambitions require the combination of theory with practice. This thesis is mainly focused on supporting these performance estimations. Trying to help on this purpose, a Graphical User Interface (GUI) is developed for simulating and analysing certain metrics of WLAN´s in indoor environments, such as coverage and data rate. The tool not only combines several different advanced concepts relating to indoor propagation, penetration loss, layout modelling, interference modelling, and different WLAN standards; but presents them in a simple and easy-to-understand interface to the final user. The performance metrics are represented quantitatively and as accurately as possible. When the tool is run with appropriate input values, it is able to provide results such as the Signal Strength, Signal to Noise Ratio (SNR), Signal to Interference Ratio (SIR) and maximum achievable Data Rate; this allows the service providers to estimate the maximum performance of their own systems and also to validate theoretical results by simulation. This tool is the first approach to a much more complex problem that is to fully model and simulate a full WLAN system; that is why its scalability allows future improvements. Bartolome Oliver Page 2 of 57 Student ID: 1429560 WLAN Performance Analysis for Indoor Environments To all who believed in me Bartolome Oliver Page 3 of 57 Student ID: 1429560 WLAN Performance Analysis for Indoor Environments Acknowledgements I would like to express my deep gratitude for the support offered by my supervisors Çise Mıdoğlu and Philipp Svoboda for the efforts and the help provided during the entire project. Also to my colleagues of the Department Alicia and Triffon, with those I have shared a lot of hours in the lab and always have been a support for me when it was really needed. My sincere thanks to my family and close friends, which are always there for me. Tomeu Oliver, July 2015 Bartolome Oliver Page 4 of 57 Student ID: 1429560 WLAN Performance Analysis for Indoor Environments Revision history and approval record Revision Date Purpose 0 18/05/2014 Document creation 1 19/06/2015 Document revision 2 26/06/2015 Document revision 3 01/07/2015 Final Revision DOCUMENT DISTRIBUTION LIST Name e-mail Bartolome Oliver [email protected] Prof.Dipl.-Ing. Dr.techn. Markus Rupp [email protected] Dipl.-Ing. Dr.tech. Philipp Svoboda [email protected] M.Sc. Çise Mıdoğlu [email protected] Written by: Reviewed and approved by: Date 01/07/2015 Date 06/07/2015 Name Bartolome Oliver Name Philipp Svoboda Position Project Author Position Project Supervisor Bartolome Oliver Page 5 of 57 Student ID: 1429560 WLAN Performance Analysis for Indoor Environments Table of contents Abstract ........................................................................................................................................................ 2 Dedication ................................................................................................................................................... 3 Acknowledgements .................................................................................................................................. 4 Revision history and approval record .............................................................................................. 5 Table of contents ...................................................................................................................................... 6 List of Figures ............................................................................................................................................. 8 List of Tables ............................................................................................................................................ 10 List of Abbreviations ............................................................................................................................. 11 1. Introduction ..................................................................................................................................... 13 1.1. Statement of Purpose ......................................................................................................................... 13 1.2. Requirements and Specifications .................................................................................................. 13 1.3. Methods and Procedures .................................................................................................................. 15 1.4. Work Plan ................................................................................................................................................ 15 1.5. Milestones ............................................................................................................................................... 20 1.6. Deviations and Incidents .................................................................................................................. 20 1.7. Gantt Diagram ....................................................................................................................................... 21 1.8. Motivation ............................................................................................................................................... 22 2. State of the art ................................................................................................................................ 24 2.1. IEEE 802.11 Standard Family ......................................................................................................... 24 2.2. Frequency Bands .................................................................................................................................. 28 2.3. Indoor Propagation Models ............................................................................................................. 31 2.4. Penetration Losses .............................................................................................................................. 34 2.5. Floorplan Generation ......................................................................................................................... 35 3. Project development: ................................................................................................................... 36 3.1. Graphical User Interface (GUI) ....................................................................................................... 36 3.2. Flat Layout Model ................................................................................................................................ 37 3.3. Penetration Losses and Frequency............................................................................................... 39 3.4. Propagation Model .............................................................................................................................. 40 3.5. Interferences .......................................................................................................................................... 42 3.6. Calculations ............................................................................................................................................ 44 3.7. Other Considerations ......................................................................................................................... 47 Bartolome Oliver Page 6 of 57 Student ID: 1429560 WLAN Performance Analysis for Indoor Environments 4. Results: .............................................................................................................................................. 49 4.1. Signal Strength (dBm) ........................................................................................................................ 49 4.2. Interference Strength (dBm) ........................................................................................................... 50 4.3. SIR (dB) .................................................................................................................................................... 51 4.4. SNR (dB) .................................................................................................................................................. 52 4.5. Data Rate (Mbps) ................................................................................................................................. 53 5. Conclusions and future development ....................................................................................
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