Title :
Packet scheduling with QoS support in LTE downlink MIMO system
Author :
Li, Yun ; Chen, Xin ; Zhao, Weiliang ; Cao, Bin
Author_Institution :
Lab. of Wireless Networks, Chongqing Univ. of Posts & Telecommun., Chongqing, China
Abstract :
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 nonreal time service and attaches importance to the BER influencing on selecting SDM technologies. Simulation results show that the proposed QoS-DMO algorithm achieves significant improvement of performance compared with that of the DMO algorithm.
Keywords :
3G mobile communication; Long Term Evolution; MIMO communication; antenna arrays; error statistics; mobile antennas; quality of service; scheduling; space division multiplexing; 3GPP Long Term Evolution downlink system; BER; LTE downlink MIMO system; MIMO antenna; QoS support; QoS-DMO algorithm; SDM techniques; multiple input multiple output antenna; quality of service; spatial division multiplexing techniques; spatial domain packet scheduling algorithm; time-frequency domain packet scheduling algorithm; Bit error rate; Delay; Downlink; MIMO; Quality of service; Scheduling algorithms; Throughput; LTE; MIMO; Packet Scheduling; Quality of Service;
Conference_Titel :
Communications in China (ICCC), 2012 1st IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4673-2814-2
Electronic_ISBN :
978-1-4673-2813-5
DOI :
10.1109/ICCChina.2012.6356998
