A Satisfaction Based Scheduling Scheme with Multi-Beam Zero-Forcing Beamforming

To meet the requirements of services with various quality of service (QoS) in future wireless communication systems, a traffic satisfaction factor(TSF) is defined to describe the satisfaction degree of traffic QoS experience. Based on this TSF, a satisfaction based scheduling scheme with multi-beam zero-forcing beamforming (ZFBF) strategy in multi-antenna downlink systems is presented in this paper. This scheduler schedules users with joint considerations of their QoS satisfaction and their channel condition. Punishment mechanism of the scheduler is proposed to prevent traffics from occupying too much more resource than their requirements. Simulation results show that the proposed scheduler can guarantee the traffic QoS experience and exploit radio resource utilization better than that of existed scheduling methods.