Delay-aware Opportunistic Scheduling for Real-time Service in OFDMA Systems

摘要：

Scheduling algorithm for OFDMA system plays an important role in supporting users diverse QoS requirements, especially for real-time service. In this paper, we propose a delay-aware opportunistic scheduling algorithm (DAOS) that can guarantee QoS requirement for real-time service and provide effective fairness among all users. The benefit is attained from utilizing queue state information (QSI) and channel state information (CSI) jointly and updating scheduling parameters during subchannel allocation procedure. Simulation results illustrate that the max packet loss ratio and delay are both improved by the proposed algorithm.

关键词： OFDMA opportunistic scheduling multiuser diversity QoS subcarrier allocation

作者: Jun Shen Na Yi An Liu Haige Xiang

作者单位: School of EECS,Peking University,Beijing,P.R.China,100871

会议类型: 国际会议

会议名称: The IET 2nd International Conference on Wireless,Mobile & Multimedia Networks(第二届IET国际无线移动多媒体网络会议)

会议地点: 北京

会议语种:英文

在线出版日期: 2008-10-12（万方平台首次上网日期，不代表论文的发表时间）