Hiii Jaswanthca, I did my research all through the web and an uncle of mine who stays in Toronto, I applied recently and i got admission into Windsor for ece.
and also I have taken ielts twice,
First time i got 6.5(overall which is sufficient) but in writing i got 5.5 so in this AUCC web site where u have all the info http://www.aucc.ca/
where some univs tell u need to have 6 above in each band,
so i took 2nd time and got 7.5(overall) and 6 above it is a good score, just get above 6 in each band if u want an admission, hahaha no bargaining, and its easy to get that.
all the best buddy.