A WiFi repeater could be the solution for you. A WiFi repeater or extender is used to extend the coverage area of your WiFi network. It works by receiving your existingWiFi signal, amplifying it and then transmitting the boosted signal.
What's the difference: WiFi Booster, Repeater or Extender?
https://www.repeaterstore.com/pages/wifi-booster-repeater-extender-differences
