I. Introduction
The word ‘drone’ is very popular now a days. They are being used in various technological sectors. Recently they are being considered as future load transporting vehicles. Various MNC’s are already testing delivery using drones. But for large scale load transportation multiple drones are required and there lies the importance of cooperative control of drones. Cooperative control between robots, robot and human are already very popular. Cooperative and decentralized controlling techniques for drones are discussed in the works [1],[7],[8],[9].