1. University of Chittagong,Department of Computer Science and Engineering,Chittagong,Bangladesh,-4331
2. Rangamati Science and Technology University,Department of Computer Science and Engineering,Rangamati,Bangladesh,-4500
3. University of Information Technology and Sciences (UITS),Department of Computer Science and Engineering,Dhaka,Bangladesh,-1212
4. Luleå University of Technology,Pervasive and Mobile Computing Laboratory,Luleå,Sweden,97187