摘要： 长期演进(LTE)系统对用户同时获得的多种业务配置了服务质量(QoS)等级标识(QCI)优先级参数，从而优化了移动通信系统QoS评价体系。为此，结合M-LWDF算法，提出一种基于QCI优先级的分组调度算法。将QCI参数引入资源分配和分组调度判决机制，在用户与申请的多项业务间建立优先级关联性，实现多用户之间、单用户的多类型业务之间的联合优化调度。仿真结果表明，该算法能有效提高系统平均吞吐量，降低平均时延。

关键词: 长期演进, 分组调度, 服务质量, Q因子, Qos等级标识

Abstract: Quality of Service(QoS) Class Identifier(QCI) priority is defined for services differentiation in Long Term Evolution(LTE) system instead of four classes which are defined in Mobile Communication System(MCS). A priority algorithm of packet schedule which is suitable to LTE is proposed in this paper. In order to build relationship between QCI priority and scheduling judgment, the MFQ-M-LWDF algorithm is proposed based on the M-LWDF algorithm. Simulation result indicates that the algorithm can improve the effective throughput and guarantee packet delay when scheduling.

Key words: Long Term Evolution(LTE), packet schedule, Quality of Service(QoS), factor Q, Qos Class Identifier(QCI)

中图分类号: 

• TN929.5