AN ENERGY-EFFICIENT ALGORITHM FOR SERVICE MIGRATION IN UAV NETWORKS

Abstract

Research subject is developing an algorithm (sequence of actions) performed when the charge of the internal battery of the UAV is reduced to migrate services from one UAV to another and move the UAV to the charging zones of the internal battery. Research method. Studying the ways of organizing the architecture of networks with UAVs, UAV applications; consideration of various ways to implement an SDN controller: at a ground Base Station, on a fixed balloon, at the head node, on all UAVs of one cluster and implementation using several controllers of different levels; identification of the main advantages from the use of the SDN concept in UAV systems. Core results. 4 ways of using UAVs are described in detail, as well as the main functions that should be implemented in the UAV cluster to perform tasks in all 4 areas of application, as well as to implement the SDN concept in the flying segment; possible ways of implementing the SDN controller in networks with UAVs are considered; the main advantages obtained in UAV systems when implementing the SDN concept are presented; theoretically substantiated the need to migrate services from one UAV to another and the inexpediency of implementing all functions on each UAV: the charge of the internal UAV battery is limited, and the more services or functions are implemented on the UAV, the more power consumption; an algorithm (sequence of actions) is proposed that will be performed when the internal battery of the UAV is discharged. This algorithm includes the following processes: the process of determining the UAV for subsequent service migration, the process of determining the service migration route, as well as the processes for sending the UAV to recharge the built-in battery, and upon returning the UAV to the state of performing the tasks assigned to it. Practical relevance. The article contains a detailed description of the ways of organizing the UAV architecture, the main areas of UAV application, as well as the advantages obtained in UAV systems when implementing the SDN concept. Also useful is information on possible ways to implement the SDN controller. The presented algorithm (sequence of actions) for the implementation of the migration of services and the movement of the UAV to the recharge zones in the future can be applied in practice when the charge of the built-in UAV battery is reduced to a certain level.