基于HSDPA的增强型分组调度算法研究  

Research on enhanced packet scheduling algorithm based on HSDPA

作　　者：周莲英[1] 霍婷婷[1] 

机构地区：[1]江苏大学计算机科学与通信工程学院,江苏镇江212013

出　　处：《计算机工程与应用》2011年第14期103-105,117,共4页Computer Engineering and Applications

基　　金：国家高技术研究发展计划(863) No.2007AA04ZIB2;江苏省科技攻关项目(No.BE2007071)~~

摘　　要：从系统吞吐量、用户公平性等方面分析研究了HSDPA系统中支持非实时业务的三种经典分组调度算法RR、MaxC/I和PF。针对PF算法重传时延过长问题,提出了一种结合混合自动请求重传HARQ的增强分组调度算法。该算法通过提高重传分组的优先级降低重传时延,有效地避免系统资源的浪费。MATLAB仿真结果表明,该算法在降低单用户重传时延的同时,仍能保证用户间的公平性和系统的吞吐量。This paper analyzes and studies three classical packet scheduling algorithm RR,Max C/I and PF in system throughput and user fairness,which support non-real time services in HSDPA system.In connection with the problem of long retransmission delays in PF algorithm,this paper proposes an enhanced packet scheduling algorithm combined with hybrid au- tomatic request.The proposed algorithm can increase the priority and reduce retransmission delay of a UE that has HARQ re- transmission packets,effectively improve the utilization of resource.MATLAB simulation results display the proposed algo- rithm can maintain user fairness and system throughput when reduce retransmission delay

关 键 词：高速下行链路分组接入 分组调度算法 正比公平调度算法 重传时延 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]