Investigation Of 3D Coverage For LTE Network Using Drone

Goh, Kwong Ming (2019) Investigation Of 3D Coverage For LTE Network Using Drone. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The use of mobile LTE network has grown exponentially in recent years. Therefore, it is important to constantly maintain both the performance and service quality of mobile network operation at top level to maximize customer satisfaction. The main goal of this project is to obtain regression models for path loss exponents and shadowing for radio channel between airborne UAV and cellular networks. The use of unmanned aerial vehicles (UAVs) to autonomously survey LTE network performance parameters and subsequently approximate the signal strength on ground level with regression model is developed in this research. LTE network performance parameters such as Received Signal Strength Indicator (RSSI) and Reference Signal Received Power (RSRP) are autonomously collected with the predefined fly path and analysed to approximate ground signal strength from 15m to 30m above ground. The data is then used to fit with commonly used path loss models (Log-distance Alpha-Beta, SUI/Erceg, Cost 231 Hata). The R-square value, R2, is subsequently calculated to obtain the well fit of the model to the data. The R-square value, R2, obtain is 48%, 8.41%, and 4.65% for 1m, 20m, and 30m respectively. The R-square value, R2, indicates that the model does not fit with the collected data well enough which is typically above 80% shows good fit.

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