There could be an issue with the network. Your connection could be being reset if the modem/router has issues or needs resetting (turning off and back on of the modem/router). It could be that the connection keeps being reset due to major fluctuation in the internet speed dropping or even stopping. It could be noise or interference on the connection. It could also be caused by to many other devices on the WiFi that is giving you issues.
For all of the above you would have to monitor the connection, restart (turn off and back on) the modem/router and make sure there are not to many devices on that WiFi. You may also need to contact your ISP about the connection, if it shows problems.
Also, try connecting to the home network via...