Hybrid Real-Time Task Scheduling Strategy in Wireless Mobile Networks

Because of wireless mobile network's characteristics,such as unstable performance,vulnerable to external disturbance,real-time scheduling in this environment is more challenging.Traditional scheduling algorithms generally ignore them.In this paper,we argue that fluctuation of network quality directly lead to the change of network delay,namely the time that task spending on network transmission changes.To solve the influence of network delay increases to the schedulability of a given set of tasks,a scheduling strategy is proposed to solve this unsatisfying change.Test results show that re-scheduling strategy improves the schedulability of a set of hybrid real-time tasks with unsatisfying network quality.