AppleTV keeps disconnecting
My AppleTV is disconnecting after a few minutes streaming from my Macbook Pro using a wireless connection through Apple airport .
MacBook Pro (13-inch Early 2011), Mac OS X (10.7.3)
The following article(s) may help you.
Troubleshooting Wi-Fi networks and connections
Wifi Diagnostic Software (for Mac users)
You may also find some help on this page, where I’ve collected some of the more unusual solutions to network issues.
When making adjustments to your network for better optimisation, you may find some of the points mentioned on this page helpful.