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一种基于QoS的自适应加权系数下行调度算法

发表时间:2014-04-30  浏览量:1642  下载量:698
全部作者: 罗莎,赵新胜
作者单位: 东南大学移动通信国家重点实验室
摘 要: 对TD-LTE/LTE-A系统中的无线资源调度问题展开研究和探讨。传统调度算法性能难以满足日益增长的业务需求,特别是在混合业务模式下,难以保证不同类型业务的服务质量(quality of service,QoS)要求。针对这一问题要求,提出一种自适应加权系数下行调度算法(adaptive largest weighted first,ALWF)。仿真结果表明:算法在满足业务时延要求的基础上,能够根据业务的丢包率(packet loss rate, PLR)变化动态地调整调度优先级,更好地满足混合业务模式下不同类型业务的不同需求,从而提高系统效率,提升用户体验。
关 键 词: 无线通信技术;TD-LTE/LTE-A;无线资源调度;最大权重时延优先算法
Title: A QoS oriented adaptive downlink scheduling algorithm
Author: LUO Sha, ZHAO Xinsheng
Organization: National Key Mobile Communications Research Laboratory, Southeast University
Abstract: With the rapid growth of mobile communications and internet, TD-LTE/LTE-A system need to provide higher transmission rates and satisfy more users with heterogeneous quality of service (QoS) requirements. To solve this problem, an adaptive largest weighted first algorithm (ALWF) is proposed based on the study of several traditional packet scheduling algorithms. The simulation results show that the proposed algorithm can improve system performance, especially packet loss rate (PLR) performance, in multi-type user system.
Key words: wireless communication technology; TD-LTE/LTE-A; radio resource management; modified-largest weighted delay first
发表期数: 2014年4月第8期
引用格式: 罗莎,赵新胜. 一种基于QoS的自适应加权系数下行调度算法[J]. 中国科技论文在线精品论文,2014,7(8):722-729.
 
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