An explicit rate control based traffic transmission and schedule scheme in UAV-IOT network slicing system

Abstract

The UAV-IOT network slicing system plays a critical role in internet of things practical applications. However traffic transmission in such a kind of system is a challenging issue due to the time-varying characteristics of the wireless link state and their transmission capacity. To realize the effective traffic transmission and high link bandwidth utilization, we construct appropriate traffic schedulers at each hop of RSNs to regulate both the forward and backward traffic transmission respectively. Specifically we incorporate the control theory method into the schedulers and design a proportional–integral–derivative controller to facilitate the explicit traffic rate control and adjustment at each scheduler. Each RSN only needs to deal with its local sending and receiving nodes in a distributed manner, and different transmission hops can be coordinated with each other so that the end to end traffic transmission will be regulated to and stabilized at the desired levels. We make the stability analysis on rate controller to derive the desired scope of the control parameters. Both the theoretical analysis and simulation results validate that our proposed transmission scheme can achieve an effective end to end traffic transmission with high resource efficiency and global stability as well over the whole UAV-IOT network slicing system.