Avaliação de influência da precipitação pluviométrica na propagação de sinal de telefonia celular 4G LTE na cidade de Manaus-Am

Abstract

According to Fisch (2002), the Amazon Region has an average rainfall of approximately 2300 mm, although it has regions where the annual total reaches 3500 mm. In their work, Figueroa and Nobre (1990) used 226 rainfall stations to identify the spatial and temporal distribution of rainfall in the Amazon region. This survey identified in detail the period of the year where rainfall occurs most frequently in the region, while the period of highest rainfall was identified between November and March. The city of Manaus, is located in the central part of the Amazon, Region that have high precipitation rates over 600 mm. This work was developed with the objective of analyzing the effects of these atmospheric precipitations on the signal propagation of the LTE 4G technology in the city, to identify areas of low coverage, since these failures are due to rapid rains, heavy rains or long term rainfall. Natural phenomena that frequently occur in the rainy season of the Amazon Region. Signal Prediction software installed on a notebook was used to collect this data received by the network access equipment, a modem enabled for web access and other services, and a Frequency Scanner was also used to collect the Gross Signal, the electromagnetic wave itself emitted by the Base Radio Stations (ERB) installed by the city of Manaus in several strategic points. Subsequently, a comparison was made of the measurements made in the environment with enough trees and few buildings with opposite climatic conditions, intense rains and intense sun. The chosen location of the first comparative analysis is located in the neighborhood of Santa Etelvina, chosen for analysis of aerial images of the city of Manaus with the Free Software Google EARTH. The second location chosen for the comparative analysis was the neighborhood of Cachoerinha, where there are quite old buildings and not much wooded and following the same criteria, opposite climatic conditions, intense rains and intense sun. With the comparative, we can verify attenuation that occurred in the rainy season and improve the coverage in those periods that frequently occur in the city.