MEC	Mobile Edge Computing
SCM	Small Cell Manager
SCC	Small Cell Cloud
GN	General Node
KDC	Key Distribution Center
LKH	Logical Key Hierarchy
TPD	Tamper-Proof Device
ECC	Elliptic Curve Cryptography
SA	System Administrator
ECDL	Elliptic Curve Discrete Logarithm problem
CDH	Computational Diffie–Hellman problem
DDH	Decisional Diffie–Hellman problem