Power degree group for a prime power

Definition
Suppose $$p$$ is a prime number and $$G$$ is a finite p-group, i.e., the order of $$G$$ is a power of $$p$$. Suppose $$q$$ is a power of the prime $$p$$. We say that $$G$$ is a $$q$$-power degree group if all the degrees of irreducible representations of $$G$$ over a splitting field are powers of $$q$$.