Constantly signed out of xbox live?

It only started recently, I'm randomly disconnected from xbox live and it really annoying, my connection is fine I honestly don't know what it is, it could happen every 20 minutes or I could go an hour without it happening.. But it's annoying as anything.. Help

San2014-09-15T10:00:42Z

SAME HERE. Whenever I want to download something, it keeps on signing me out. Even Microsoft has no clue about it. They just say that improve the wireless signal and reduce devices using wifi.