How to config radio when i used as a AP-bridge?

Hi

i have a some of lobometrics 968RS and 28dbi dish antenna as a AP-bridge and i using some 968RS connect to it as station(client).
i transferred data such as video from that station clients to the APs. Now i have a big problem and that is every few days my APs is down and my links too,namely all of stations(clients) disconnect and as a result disconnecting my video transferred.
i just connect client units to my base (APs) trough SSID. how can i fix it.please help me. also how should i config my APs or station(clients).


thanks
Regards.

hi.
please send for me wireless config export file.