An NFV-Based Energy Scheduling Algorithm for a 5G Enabled Fleet of Programmable Unmanned Aerial Vehicles

Table 2

Parameters related to the processing of combinations and drones in the scheduling algorithm.

Parameter	Description
	Pair of a drone and a service. A pair is used to describe the individual analysis of the execution of a service running on a drone
	Total number of pairs of drones and services
	Combination of a set of drones to run a set of services. A combination of drones and services, which is commonly referred to as a combination, is composed of different pairs of drones and services
	Set of all possible combinations of drones and services
	Total number of all possible combinations. This number is given by (5)
	Set of valid combinations of drones and services. The is a subset of
	Total number of valid combinations. This number is given by (6)
	Sorted list of the identifiers of the analyzed combinations. To obtain this list, the combinations are sorted in descending order according to the reached
	Set of drones whose battery must be replaced
	Set of drones that have neither been used nor allocated in the system
	Set of drones whose battery has been replaced. These drones can be used for a new allocation process
	Total number of drones that are available in the system. This number is given by (10)