4G	4th Generation Mobile Networks
5G	5th Generation Mobile Networks
BS	Base Station
MBS	Macro Base Station
SBS	Small Base Station
UAV	Unmanned Aerial Vehicle
EE	Energy Efficiency
D2D	Device-to-Device
HetNets	Heterogeneous Networks
QoE	Quality of Experience
QoS	Quality of Service
IoT	Internet of Thing
HPPP	Homogeneous Poisson Point Process
LoS	Line-of-Sight
NLoS	Non-Line-of-Sight
SNR	Signal-to-Noise Ratio
SC	Spectral Clustering
MOS	Mean Opinion Score
CFG	Coalition Formation Game
CO-CFG	Cooperation-Order-based Coalition Formation Game
PO-CFG	Pareto-Order-based Coalition Formation Game
SO-CFG	Selfish-Order-based Coalition Formation Game
NE	Nash Equilibrium
EPG	Exact Potential Game