There was no Aryan invasion of India. There are no historical evidence of Aryan invasion. This was some thing created by non-Indian rulers to divide the population of the country and rule them. Dravid means the land where three seas meet and the word was used Shankaracharya in describing where he is from “Dravid Putra”, meaning that he is the son of the land where three seas meet.

http://creative.sulekha.com/the-roots-of-the-word-dravid_183713_blog

The Myth Of Aryan Dravidian Divide

The above links prove that the Aryan theory is not proved.