Very interesting idea! I think one of the important point is : "why do they move". When everything ok where you are, you don't move. Even if you're a nomadic people, i think that you travel between the different regions you know, where you can hunt. Bu it's quite limited.
So : on what pressure do you move? Lack of hunting preys? Due to human overpopulation? Due to climat changes?
If you're a sedentary people : population extension? Lack of local ressources? Need of the kind of ressources (bronze age : copper, more wood etc)? Natural extension on a main river, on a coast?