UAV	Unmanned Aerial Vehicle
IoT	Internet of Things
IIoT	Industrial Internet of Things
SBC	Single Board Computer
QoS	Quality of Service
MQTT	Message Queuing Telemetry Transport
MQTT-SN	MQTT for Sensor Networks
CoAP	Constrained Application Protocol
AMQP	Advanced Message Queuing Protocol
HTTP/1.1, HTTP/2, HTTP/3	Versions of Hypertext Transfer Protocol
BLE	Bluetooth Low Energy
Wi-SUN	Wireless Smart Utility Network
6LoWPAN	IPv6 over Low power Wireless Personal Area Networks
NB-IoT	Narrowband Internet of Things
LTE-M	Long Term Evolution for Machines
LoRaWAN	Long Range Wide Area Network
PSM	Power Saving Mode
eDRX	Extended Discontinuous Reception
URLLC	Ultra-Reliable Low-Latency Communication
LPWAN	Low Power Wide Area Network
RIS	Reconfigurable Intelligent Surface
RRC	Radio Resource Control
RPL	Routing Protocol for Low-Power and Lossy Networks
OSCORE	Object Security for Constrained RESTful Environments
DTLS	Datagram Transport Layer Security
TLS	Transport Layer Security
AES	Advanced Encryption Standard
BCap	Battery capacity (Wh or %)
P(t)	Instantaneous power at time t
Pavg	Average power consumption (mW)
Pcons.	Average consumption power
E	Total energy consumed (Joules or Wh)
SD	Standard deviation
texec	Execution time of operation
Rt	Resistance (if applicable, but in your context: possibly symbolic)
ρ	Spearman rank correlation coefficient
BLife	Estimated battery lifetime (hours)
Econs.	Energy consumption (J)
ICoPEP	Industrial Classification of Protocol Energy Profiles