1. ITUhttp://www.itu.int/en/ITU-R/study-groups/rsg5/rwp5d/imt-2020/Pages/default.aspx
2. TR 38.913 Study on Scenarios and Requirements for Next Generation Access Technologieshttp://www.3gpp.org/ftp/Specs/archive/38_series/38.913/38913-e30.zip
3. A Survey of 5G Network: Architecture and Emerging Technologies
4. Technical Specification Group Services and System Aspects; 3G Security,2012
5. GPPhttp://www.3gpp.org/ftp/specs/html-info/33401.htm