Game-Theoretical Data Offloading for NOMA-Enabled Urban Internet of Things

Table 1

Key notations.

Notations	Definitions
	Any urban IoT device
	Set of all urban IoT devices
	The number of all urban IoT devices
	Set of all urban IoT clusters
	The number of urban IoT clusters
	Set of all UAVs
	Set of all urban IoT devices in cluster
	The number of urban IoT devices in each cluster
	The UAV in cluster
	The computing power of urban IoT device
	The transmit power of urban IoT device
	The channel gain of urban IoT device for data transmission
	The bandwidth of the channel for data transmission
	The computation task of urban IoT device
	The data size of computation task
	The number of CPU cycles to complete computation task
	The data offloading strategy of urban IoT device
	The set of all devices’ data offloading strategies
	The set of all devices’ data offloading strategies except device
	The set of urban IoT device ’s neighbor base station
	The set of all urban IoT devices allocated to channel on edge server
	The delay of completing computation task locally
	The energy consumption of completing computation task locally
	The delay of completing computation task by the BS
	The energy consumption of completing computation task by the BS
	The delay of completing computation task by UAV
	The energy consumption of completing computation task by UAV
	The cost function of device ’s strategy
	The data offloading strategies of all devices at Nash equilibrium