Fairness and QOS guaranteed user scheduling for multi-user MIMO broadcasting channel
This paper investigates fairness and quality of service (QoS) guaranteed user scheduling scheme in multi-user MIMO broadcast channel. The main contribution of this paper is to consider characteristic of video source in user scheduling process. As a result, the proposed scheme can provide fair and satisfactory services to regular data users, while QoS of multimedia consumers is guaranteed. Since video source is delay-sensitive, in our framework, first we will estimate the transmitting time of each video packet. The estimation of transmission time serves dual purpose: one is to guarantee the transmission of any given video packet before it expires, and another one is to allow other unscheduled regular data users to access the channel when there is no pressing need to transmit any video packet for the video consumer. Simulation results show that the proposed user scheduling framework achieves high QoS performance for multimedia consumers.