USA is the best option for pursuing masters  in ECE.Second comes Singapore and Canada. If you have decided to pursue it out of India then I suggest you to opt USA.Here is the list of some colleges in the US offering MS in ECE courses.
https://www.hotcoursesabroad.com/india/training-degrees/us-usa/postgraduate/electronic-engineering-courses/loc/211/slevel/3/cgory/g7-3/sin/ct/programs.html
Hope this helps
All the best !

Hii Saikiran

yes Canada is one among the best places to pursue higher studies in ECE. Colleges in Canada offer latest technologies and world-class facilities. UNO has certified that Canada is a top place for studying. Canada has a record of investing money for education in comparison to the average invested by Organization for Economic Cooperation & Development country. It is the second largest spender in education among the G8 nations.

Here I Have mentioned some reputed institutions name to pursue higher studies in field of ECE  I.e.

1. University of Toronto
2. university of Waterloo
3. university of British Columbia
4. University of Alberta
5. Mc gill university. etc

Hope I solved your query.

Thank you.