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OFDMA下行链路混合业务调度算法 被引量：1

Schedule algorithm for mixed traffics in downlink OFDMA
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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. 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.
作者 郑培超 贾韶军 宋瀚涛 莫笑丽
机构地区 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
出处 《华中科技大学学报（自然科学版）》 EI CAS CSCD 北大核心 2008年第12期12-15,共4页 Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金 科技部科技基础性工作专项资金重大项目(2002DEA20018)
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 orthogonal frequency division multiple access mixed traffic quality of service （QoS） adaptive modulation and coding hybrid automatic repeat request
分类号 TN929.5 [电子电信—通信与信息系统]
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参考文献11

  • 1Yang X, Feng G, Kheong D S C. Call admission control for multiserviee wireless networks with band- width asymmetry between uplink and downlink[J]. IEEE Transactions on Vehicular Technology, 2006, 55(1) : 360-368.
  • 2Navid D, Tho L. Dynamic downlink OFDM resource allocation with interference mitigation and macro diversity for multimedia services in wireless cellular systems[J]. IEEE Transactions on Vehicular Technology, 2006, 55(5): 1 555-1 564.
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同被引文献9

  • 1孙卓,彭木根,王文博.保证混合业务质量的跨层OFDMA资源分配方法[J].北京邮电大学学报,2006,29(6):53-57. 被引量：13
  • 2Liu Xin. Opportunistic scheduling in wireless communication networks[J].Purdue University, 2002.
  • 3Akyildiz I F, Levine D A, Joe I.A slotted CDMA protocol with BER scheduling for wireless multimedia networks[J].IEEE ACM Trans.Net,2000,7(2):913-917.
  • 4Kaneko M, Popovski P and Dahl J.Proprotional fairness in multi-carrier system: upper bound and approximation algorithm[J].IEEE Communications Letters,2006,10(6):462- 464.
  • 5Andrews M, Kumaran K, Ramanan K,et al.Providing quality of service over a shared wireless link[J].lEEE Communications Magazine,2001,39(2): 150-154.
  • 6Rhee Jong-Hun, Holtzman J M, Kim Dong-Ku. Performance analysis of the adaptive EXP/PF channel scheduler n an AMC/TDM system[J].lEEE Communications Letters,2004,8(8):497- 499.
  • 7Hua Hou,Wuyang Zhou,ShengliZhou, et al. Cross-layer Resource Allocation for Heterogeneous Traffics in Multiuser OFDM Based on A New QoS Fairness Criterion[J].lEEE Vehiclular Technology Conference, 2007:1593-1597.
  • 8刘涛,邱玲.基于满意度准则采用混合波束成型预编码的调度方法[J].电子与信息学报,2009,31(1):13-17. 被引量：2
  • 9黄晓燕,毛玉明,吴凡,冷甦鹏.基于效用函数的OFDM混合业务资源调度算法[J].计算机应用研究,2009,26(5):1860-1864. 被引量：3

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华中科技大学学报（自然科学版）
2008年 第12期

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