| OFDMA下行链路混合业务调度算法 |
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| 引用本文： | 郑培超,贾韶军,宋瀚涛,莫笑丽.OFDMA下行链路混合业务调度算法[J].华中科技大学学报(自然科学版),2008,36(12):12-15. |
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| 作者姓名： | 郑培超 贾韶军 宋瀚涛 莫笑丽 |
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| 作者单位： | 北京理工大学计算机科学技术学院，总装备部炮兵防空兵装备技术研究所，国家海洋局东海信息中心 |
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| 基金项目： | 科技部科技基础性工作专项资金重大项目
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| 摘 要： | 提出了一种基于正交频分多址接入系统的混合业务分组调度算法.在调度过程中,对信道状况好的实时业务用户的数据包采用推迟发送的策略.先对缓冲区中累积数据包较多的实时业务用户分配资源,随后对非实时业务用户采用正比公平算法分配剩余的资源.仿真结果表明,提出的算法较好地满足了实时业务的延迟需求,并提高了非实时业务的系统吞吐量.
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| 关 键 词： | 正交频分多址接入 混合业务 服务质量 自适应调制编码 混合自动重传请求 |
Schedule algorithm for mixed traffics in downlink OFDMA |
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| Zheng Peichao Jia Shaojun Song Hantao Mo Xiaoli.Schedule algorithm for mixed traffics in downlink OFDMA[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2008,36(12):12-15. |
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| Authors: | Zheng Peichao Jia Shaojun Song Hantao Mo Xiaoli |
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| Institution: | Zheng Peichao1 Jia Shaojun2 Song Hantao1 Mo Xiaoli3 |
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| Abstract: | A packet scheduling algorithm for mixed traffics was proposed in orthogonal frequency division multiple access(OFDMA) systems.In the scheduling processes,transmissions for the packets of users in good channel state were postponed.Real time(RT) traffic users with more cumulative packets in buffers were allocated resources first.Proportional fair(PF) algorithm was then used for allocating remaining resources to non real-time(NRT) traffic users.Simulation results showed that the proposed algorithm can meet delay constraints of RT traffics,and enhance the system throughput of NRT traffics. |
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| Keywords: | orthogonal frequency division multiple access mixed traffic quality of service(QoS) adaptive modulation and coding hybrid automatic repeat request |
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