What kind of plan do you expect him to have with aces?
You raise it, evaluate how your opponent gets to the flop (if they raised before you and called, if they limp called etc) and whatever you know about the way they play, put them on a broad range and see a flop. Their range almost invariably includes a ton of pocket pairs and two pair possibilities. If they show aggression then you have to weigh up whether or not they know what they're betting into and if they're bluffing
There's way too many variables involved to have a set plan to call or fold to an all in when you have AA.