Análisis comparativo de modelos de propagación en la telefonía móvil en la banda 1900 Mhz (LTE) a través de mediciones del campo eléctrico en la ciudad de Ambato.

Abstract

The objective of the study was to analyze and compare the propagation models in mobile telephony in the 1900 MHz band (LTE) through the detection of the electric field within the urban area of Ambato city. For this, initially four propagation models used in mobile services were analyzed: Okumura-Hata, Hata-Extended (COST-231), SUI with correction factor and Ericsson 9999, later the identification of the stations that work with 1900MHz was carried out. in the LTE technology of Claro operator. For this process, the 'Network Information' software was used, where the frequency band in which the stations operate was identified, and to which the mobile device was connected; Subsequently, 4 measurements of 6 minutes were carried out in each selected point of the city. In the investigation, Deming methodology was used, which consisted of four phases (Planning, Doing, Verifying, Acting), which allowed the comparison of the theoretical results with the real ones, and thus understand the variation that each one has. of the models with respect to the results obtained. Once the real measurements taken and compared with the calculated values were analyzed, through the RMSE statistical test it was determined that the most adaptive model is SUI Model with correction factor proposed by the IEEE, which is adequate to work with close frequencies. at 2GHz. Therefore, the propagation model that is closest to the urban characteristics of Ambato city is SUI model with correction factor. It is advisable to increase the measurement campaign since Ambato city is not a demographically flat area, so that broader results could be obtained, if parameters such as: frequency range, building heights, among others are considered for the measurements.