Check these surveys:

http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6549282

http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=6525561

http://ieeexplore.ieee.org/xpl/articleDetails.jsp?reload=true&arnumber=6553297

Please let me know if you need an electronic copy of these articles.

Good luck !

Yes, please attach the electronic copy of these papers, if not inconvenient.

Dear Pankaj,

Please find attached an electronic copy of the 3 surveys that you asked for. Sorry for the delay. Good luck.

Kind regards,

Imed

Dear Dr. Pankaj, Nice to see you. What specific application you are looking for ?

Best wishes

P.K.Bhatnagar

In my opinion, three major criteria I would consider are:

1. Cost of deployment and maintenance.

2. Security and data privacy.

3. Support.