UAV-Aided Data Delivery Scheme Based on Opportunistic Virtual Intersections for Smart Transportation Networks

Table 1

Notations in UADD.

Notations	Description
	The vehicle x
	The UAV x
	The communication range of vehicles
	The communication range of UAVs
	The intersection x
	The road segment between and
	The length of the road segment
	The vehicle density of road
	The speed of the vehicle on the road
	The speed of the UAV x
	The expected packet delivery delay between points x and y within a road segment
	The packed delivery probability to the optimal next intersection