1. Department of Automation and Information Engineering, Xi’an University of Technology, Xi’an, China
2. Department of Automation and Information Engineering, Xi’and University of Technology, Xi’an, China
3. VTT Technical Research Centre of Finland, Oulu, Finland
4. Information Systems Architecture Research Division, National Institute of Informatics, Tokyo, Japan
5. Meta-Networking Research Center, The University of Electro-Communications, Tokyo, Japan