$2D$	Two-dimensional
$3D$	Three-dimensional
$3GPP$	Third-Generation Partnership Project
$AAIA$	Adaptable Application Independent Aggregation
$Additive$	Increase/Multiplicative Decrease
$AOA$	Angle of Arrival
$AP$	Access Point
$BBAD$	Bit-by-bit Address Decoding
$BLE$	Bluetooth Low Energy
$BPSK$	Binary phase shift keying
$CAS$	Collision avoidance system
$CDMA$	Code-division Multiple Access
$CSMA/CA$	Carrier-sense multiple access with collision avoidance
$CSMA$	Carrier Sense Multiple Access
$CSS$	Chirp spread spectrum
$CTS$	Clear to Send
$DBPSK$	Differential binary phase-shift keying
$DFS$	Depth First Search
$DPSK$	Differential phase shift keying
$DSSS$	Direct-Sequence Spread Spectrum
$EM$	Electromagnetic
$FDMA$	Frequency-division Multiple Access
$FSK$	Frequency shift keying
$FTS$	Fault Tolerant Slot
$GFSK$	Gaussian frequency shift keying
$GNSS$	Global navigation satellite system
$GPS$	Global Positioning System
$GSM$	Global System for Mobile Communications
$HF$	High frequency
$IoT$	Internet of Things
$ISM$	Industrial, Scientific and Medical
$LF$	Low frequency
$LoRa$	Long range
$LOS$	Line of Sight
$LPWA$	Low-Power Wide-Area
$LPWAN$	Low-Power Wide-Area Network
$LTE-MTC$	Long-Term Evolution Machine-Type Communication
$LTE$	Long-Term Evolution
$MAC$	Medium access control
$MIMO$	Multiple Input Multiple Output
$NB-IoT$	Narrow-band Internet of Things
$NB$	Narrow Band
$NLOS$	Non-Line of Sight
$OFDM$	Orthogonal frequency-division multiplexing
$OFDMA$	Orthogonal frequency division multiple access
$OQPSK$	Offset quadrature phase shift keying
$PION$	Pioneer
$QAM$	Quadrature amplitude modulation
$QoS$	Quality of Service
$QPSK$	Quadrature phase shift keying
$RANO$	Reservation Aloha for No Overhearing
$RF$	Radio frequency
$RFID$	Radio-frequency Identification
$RPMA$	Random Phase Multiple Access
$RTS$	Request to Send
$SCH$	Scheduling frame
$SHF$	Super-high frequency
$SRF$	Slot-reserved frame
$SS$	Spread Spectrum
$TDMA$	Time-Division Multiple Access
$TDOA$	Time Difference of Arrival
$TOA$	Time of Arrival
$TOF$	Time of Flight
$UHF$	Ultra-high frequency
$UMTS$	Universal Mobile Telecommunications System
$UWB$	Ultra-wideband
$V2I$	Vehicles and infrastructure
$V2P$	Vehicles and personnel
$V2V$	Vehicles and vehicles
$VLF$	Very low frequency
$WLAN$	Wireless Local Area Network
$WPAN$	Wireless Personal Area Network
$WWAN$	Wireless Wide Area Network