Very often in the context of a reduced speed or micro cuts in a Wi-Fi network, it is not a question of line quality, but of positioning of the router which supplies the computer or television receiving the data.
Jason Cole, a student physicist, decided to find a solution to his problem of Wi-Fi reception by using complex mathematical techniques. His procedure is quite cumbersome and involves solid knowledge.
He began by making a map of his apartment, specifying the refraction values of each wall according to the material and its thickness. Once the map was available, he simply applied a simulation model of electromagnetic waves according to the Helmholtz equations. He thus obtained a map showing how the router's waves are emitted, and how they bounce or pass through the walls.
The procedure is detailed in full on Jason Cole's website, it highlights how important the repercussions of good positioning can be.
Still, this is a lot of work to highlight a very simple fact: the best position for a WiFi router is generally located in the center of the accommodation, so that the broadcast is uniform and the signal as powerful as possible (as part of WiFi coverage extended to all rooms.)
But since this positioning is not always possible, it will sometimes be necessary to do otherwise. Fortunately, no need to be a physicist or mathematician to find the ideal place for your router, since the whole procedure has been gathered in an application available on Android. Unfortunately, it turns out to pay (0.63 €). However, it offers the possibility of seeing which zones are perfectly covered by the WiFi network based on several factors entered by the user and the configuration of the home.