Losing connection on a repeated wireless network

[Antonio M]

I am using a Picostation to repeat the resort's wireless network, from A
SSID to B SSID. I am using DD-Wrt software, but sometimes on Fedora (but
also on Ubuntu on another machine) I lose the connection (a question mark
replaces the wireless icon) and I have to switch off  and the switch on the
wireless card by software in order to connect again. I am not sure if it is
Linux' fault, heavy wireless traffic or something else. Any comment???
Never lost any connection on Androd devices for example