1. GSMA the mobile economy,2020
2. Study on scenarios and requirements for next generation access technologies, (3GPP), TR 38.913;3GPP,2020
3. 3rd generation partnership project (3GPP),2020
4. Security architecture and procedures for 5G system, (3GPP), TS 33.501;3GPP,2020
5. Practical attacks against privacy and availability in 4G/LTE;Shaik,2016