UAV-Assisted Data Dissemination in Delay-Constrained VANETs

Table 1

Variables used in this paper.

Variable	Definition
	List of neighbors of node i
δ	Predefined delay threshold
ϵ	A positive real number used for approximation
l	Link between two nodes
L	Set of links on the path for data delivery
	Transmission rate of link l
	Xl = 1 means links l is selected otherwise not
s	Source node that carries the information
	Nodes active in the network
	Total weighted transmission rate at node
	Total transmission delay at node
	Weighted transmission rate of link between and
	Transmission delay of link e between and
	Weighted transmission rate of link l, calculated by
	Transmission delay of link l
Y	Set of pair values of vehicle
	Trimmed list of of vehicle
	Optimal solution of the maximization problem
P	Approximate solution of the maximization problem