Dioscorea alata- any known companion plants?

Anyone know good companion plants for Dioscorea alata (true yam)? Tracing it back up the scientific classification tree, I can't find anything it's related to that I might find a match (i.e. Apios americana is in the Fabaceae family, so I treat it like a bean for companion plant purposes.)  Help please...

In brazil people are having sucess including it in Milpa(tree sisters, corn, beans and squash). I would combine it with a climbing bean and a ground cover crop (nasturtium, squash, sweet potato,etc). Look for what season and climate and what can grow.

Thank you, Bruno- I will be growing corn this year, so I will try some alata with them, plus some short bean and Seminole pumpkin as the squash.  They are still dormant, so hopefully the corn will get a good start before the alatas need something to climb!