LTEMAC层低计算量的下行调度及资源分配  

LTE MAC layer downlink scheduling and resource allocation with low calculation amount

作　　者：崔亚南[1] 苏寒松[1] 刘高华[1] 

机构地区：[1]天津大学电子信息工程学院,天津300072

出　　处：《计算机应用》2013年第6期1523-1526,共4页journal of Computer Applications

摘　　要：针对现有调度算法不能同时满足多用户的实时和非实时业务的性能需求及算法的计算量大等问题,提出了一种新的基于服务质量(QoS)的长期演进项目(LTE)下行调度算法。该算法在修正的最大加权时延优先(M-LWDF)算法的基础上引入了平衡因子,并利用用户上报的信道质量指示(CQI)值直接替代瞬时速率。仿真结果表明,该算法在保证公平性的前提下,降低了计算复杂度,当小区用户数达到45时,业务的丢包率下降了6.71%,系统整体的吞吐量提高了12.91%。This paper proposed a new downlink scheduling algorithm based on the Quality of Service （QoS） Long Term Evolution （LTE）, because the existing scheduling algorithms cannot satisfy the needs of multi-users＇ real-time services and non real-time services and have large amount of calculation. This algorithm introduced a balance factor on the basis of Modified Largest Weighted Delay First （M-LWDF） algorithm. In addition, the users＇ reported Channel Quality Indicator （CQI） directly replaced the instantaneous speed. The simulation results show that the proposed algorithm can reduce the computational complexity, when users＇ number added to 45, packet loss rate fell by 6.71%, the system overall throughput increased by 12.91% on the premise of fairness.

关 键 词：长期演进项目 服务质量 信道质量指示 修正的最大加权时延优先 调度 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]