WLAN throw me out?

I have the following problem: When I'm on the phone and connected to the wireless from home, I'm often rausgeschmissen very short, which is relatively annoying. This does not happen to me at any other wlan, but at home already. However, everything fits with my family and my laptop, which is also in my room, is permanently connected to the Wi-Fi. What can I do?

Since probably many devices use the same WLAN, it is obviously busy. If possible, set up a second WLAN on the router and connect your mobile phone with it, or an access point that sets up another WLAN.

OK, I'll see what I can do, thanks for the help.