My macbook has been troubling me lately while connecting to WiFi. When I wake up my macbook sometimes my Wifi doesn't show up in the available wifi list. I have to make several attempts to manually join the the wifi network to connect.
I can connect to all other Wifi's around me and others can connect to my wifi router as well
Here's the screenshot from my router's page
Screenshot from Wireless Diagnostic tool
Please help

I can connect to all other Wifi's around me and others can connect to my wifi router as well
Here's the screenshot from my router's page

Screenshot from Wireless Diagnostic tool

Please help