An Issue I noticed with Bluetooth

I have been using my Note II now since it came out love the phone however I am seeing one issue and I am not sure what is causing it. I have a Ford SYNC and I have my phone hooked up to it. I have had issues where I am playing music over Bluetooth and the music just stops. I look down at my phone and hit the power button to un-pause it as I believe it has paused. However, the phone acts like its locked up I cannot turn on the screen nothing. I sat the phone down and eventually the screen just turned on and Bluetooth started playing the music again. I have had this happen quite a few times and it is getting a bit frustrating. Any ideas?