AN	Artificial-noise
AP	Access point
BS	Base station
CSI	Channel state information
DTD	Data transmission duration
EVE	Eavesdropper
IoT	Internet-of-things
IRS	Intelligent reflecting surface
LOS	Line-of-sight
MISO	Multiple-input multiple-output
mmWave	Millimeter wave
NOMA	Non-orthogonal multiple access
PLS	Physical-layer security
PSD	Pilot signal duration
RCR	RIS-based Channel Randomization
RIS	Reconfigurable intelligent surface
SIMO	Single-input multiple-output
SINR	Signal to interference-plus-noise ratio
SNR	Signal-to-noise ratio
TDD	Time-division duplex
THz	Tera-hertz
UE	User equipment
ULA	Uniform linear array