C3000 XBOX Live connection drops periodically

I have been using the C3000 with Comcast cable service for about a week with mostly no complaints. The one problem that I am having is that when I am using the XBOX 360, my XBOX Live connection gets disrupted intermittently or my sign-in status changes. There is no pattern for this in regards to the time of day when it happens or if other devices in my house are using the wifi at the time. I have never had trouble connecting to the internet or XBOX Live, but keeping the connection constant seems to be an issue. Anybody have a similar experience or any advice on settings that should be changed?