| 一种HSDPA系统中依赖负载的正比公平调度算法 |
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| 引用本文： | 夏登俊,王培康.一种HSDPA系统中依赖负载的正比公平调度算法[J].无线通信技术,2008,17(3):24-28. |
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| 作者姓名： | 夏登俊 王培康 |
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| 作者单位： | 中国科学技术大学信息科学与电子工程系,合肥,230027 |
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| 摘 要： | 研究和仿真了HSDPA系统中分组调度算法(RR,Max C/I和PF)的系统吞吐量和用户公平性,仿真结果与理论分析表明在HSDPA系统中RR算法调度结果的公平性略逊于PF算法.为了补偿正比公平调度算法公平性,提出了依赖负载的正比公平(LDPF)调度算法.该算法旨在通过低负载时牺牲系统吞吐量换取用户间公平性.然后用扩展了爱立信EUPLANE模块的NS2网络仿真软件对LDPF算法进行了仿真.仿真结果表明LDPF调度算法在系统低负载时有效地补偿了先前的低速率用户,通过这种低负载和高负载时的时间分集,改善用户间的长时公平性.
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| 关 键 词： | 分组调度算法 正比公平调度算法 系统负载 |
A Load-dependent Proportional Fair Scheduling Algorithm for HSDPA Systems |
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| XIA Deng-jun,WANG Pei-kang.A Load-dependent Proportional Fair Scheduling Algorithm for HSDPA Systems[J].Wireless Communication Technology,2008,17(3):24-28. |
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| Authors: | XIA Deng-jun WANG Pei-kang |
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| Affiliation: | XIA Deng-jun,WANG Pei-kang(Department of Electronic Engineering,University of Science , Technology of China,Hefei 230027,China) |
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| Abstract: | After some study and simulations of Round Robin,C/I based and Proportional Fairness scheduling,it is shown that fairness of Round Robin scheduling is worse than PF scheduling in HSDPA.In order to compensate the fairness of PF scheduling,a Load-dependent PF scheduling is proposed.LDPF scheduling improves the fairness at the cost of a little loss of system throughput when the system load is light.Then simulation of LDPF scheduling in HSDPA is based on NS2 extended with EURANE.The simulation results indeed dis... |
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| Keywords: | HSDPA NS2 |
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