WISP does not reconnect
I create a local WiFi spot connecting this Nano router to the residence WiFi.
I need it because there are multiple occasions where devices should be visible to each other on a network, which is obviously disabled on the residence WiFi.
For example, file sharing between devices, development deploying, IoT (like robot cleaner, Amazon Echo) and so on.
So, I set router to the WISP mode, connect it to the WiFi and create an internal wireless network.
Each 40-50 minutes router disconnects from the residence WiFi. There is no ethernet cable and I have no idea about a distance to the residence routers/repeaters, but all my devices catch residence WiFi very well, without any disruption (at least, without visible one).
To reconnect, I should reboot router or scan for a SSID anew.
I understand that there can be many reasons of disconnection (the signal strength, network is too busy and so on), though all other devices work well.
The question is, why it can not immediately reconnect and what do I have to do? Should I buy some more powerful router (like TL-WR940N) or it is the source network problem?
My goal is to obtain a local WiFi network (where devices can be visible to each other) and to have the internet from outer WiFi shared into it.