用于TD-LTE系统的一种上行调度新算法  

A New Uplink Scheduling Algorithm in TD- LTE System

作　　者：李庆[1,2] 王丽萍[1,2] 李希洋 

机构地区：[1]武汉理工大学信息工程学院,湖北武汉430070 [2]光纤传感技术与信息处理教育部重点实验室,湖北武汉430070 [3]中国科学院计算技术研究所,北京100190

出　　处：《武汉理工大学学报（信息与管理工程版）》2014年第1期1-3,20,共4页Journal of Wuhan University of Technology：Information & Management Engineering

基　　金：国家自然科学基金资助项目(608060500)

摘　　要：针对目前TD-LTE系统上行调度过程中存在的系统吞吐量低、业务QoS(服务质量)得不到保障、物理资源分配不合理等问题,对传统上行调度算法进行了改进研究。首先,在传统PF算法(比例公平算法)基础上加入对业务优先级的考虑;其次,在资源分配过程中结合用户的实际信道质量引入RME算法(极大值扩张算法)。实验结果表明,所提出的上行调度算法,能够有效提高系统吞吐量,改善数据业务传输性能,并能解决上行调度资源分配连续性限制的问题,有助于提升TD-LTE系统整体性能。In order to resolve problems such as the low - throughput, poor quality of business services, as well as unreasona- ble allocation of physical resources in the TD - LTE system, a traditional uplink scheduling algorithm was researched and a new uplink scheduling algorithm was provided. First of all, the business priority was considered in traditional PF algorithm. Secondly, the RME （ maximum expansion algorithm） algorithm which considered the user＇s actual channel quality was used in the process of the physical resources allocation. The experimental results indicate that the proposed uplink scheduling algorithm can effectively improve system throughput and data transmission performance. It solves resource allocated continuously restriction in uplink scheduling, helps to promote performance of TD - LTE system.

关 键 词：TD—LTE PF算法 RME算法 系统吞吐量 业务QoS 

分 类 号：TN929.52[电子电信—通信与信息系统]