Packet Scheduling With QoS Support in LTE Downlink MIMO System
This paper addresses the issue of packet scheduling with Spatial Division Multiplexing (SDM) techniques of Multiple Input Multiple Output (MIMO) antenna in the 3GPP Long Term Evolution (LTE) downlink. Considering the restricted condition of selecting SDM techniques, a novel packet scheduling algorithm with Quality of Service (QoS) support in LTE downlink MIMO system, named QoS-DMO, is proposed. QoS-DMO extends the time-frequency domain packet scheduling algorithm to the spatial domain, which takes into account multiple QoS factors (e.g., data rate, delay, BER, etc.) for real time service and non-real time service and attaches importance to the BER influencing on selecting SDM technologies.