Customer Positioning in LTE Systems

OData support
Dr. Imre Sándor
Department of Networked Systems and Services

The goal of my thesis was to understand how the fourth generation LTE network works, including and focusing on how the positioning algorithms function in these systems.

The highlighted topic is the PRS, the Positioning Reference Signal, which was intruduced into the network with the intent of making the location estimation process even more accurate.

In the program that I created in addition to my thesis, I implemented one of the most frequently used positioning algorithms in LTE, using PRS signals.

The study starts with the introduction of positioning algorithms, that have been used in the past, and those that are being used at the moment, highlighting the theory behind them, most of the time including the way they work in reality.

The next topic is about how LTE radio access works, and the unique technique that was introduced here (OFDMA), also mentioning how and where the system improved compared to previous networks (GSM, 3G).

After this I explain how the PRS works exactly, with its pros and cons, and how it affects the basic flow of the network.

Next I introduce the program that i wrote: What the certain colors and shapes mean, what mathematical formulas I used to implement the solution, what I did and why I did that, and all in all what the purpose was behind the creation of the application.

After that I analyze the things that I experienced while using the program, and explain why certain things happen the way they do.

I close the document with a short summary, writing down how I think this work could be continued, and what additional functions could be implemented in the application.


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