A novel multi-radio packet scheduling algorithm for real-time traffic on generic link layer

In this paper, a novel multi-radio packet scheduling algorithm, QU, is proposed for real-time traffic on generic link layer (GLL). First, a scheduling-utility function is designed to represent the utility of scheduling a packet to a radio access with the goal to guarantee QoS and improve spectrum utilization. Second, using this utility function, a multi-radio packet scheduling model is presented based on joint consideration of QoS, fairness and spectrum efficiency, while the solution for this model is NP problem; Finally, Hopfield neural network (HNN) is used to fast and efficiently find an optimal solution for the scheduling model. Simulation results show that, compared with M-LWDF and PLR algorithms, QU algorithm has lower packet loss ratio and higher spectrum efficiency while could meet the allowable maximum delay requirement.