  Due to the rapid development technologies for small unmanned aircraft systems
(sUAS), the supply and demand market for sUAS is expanding globally. With the
great number of sUAS ready to fly in civilian airspace, an sUAS aircraft
traffic management system that can guarantee the safe and efficient operation
of sUAS is still at absence. In this paper, we propose a control protocol
design and analysis method for sUAS traffic management (UTM) which can safely
manage a large number of sUAS. The benefits of our approach are two folds: at
the top level, the effort for monitoring sUAS traffic (authorities) and
control/planning for each sUAS (operator/pilot) are both greatly reduced under
our framework; and at the low level, the behavior of individual sUAS is
guaranteed to follow the restrictions. Mathematical proofs and numerical
simulations are presented to demonstrate the proposed method.
