| 基于TD-HSDPA系统的新型调度算法 |
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| 引用本文： | 崔杰,常永宇,刘淑慧,杨大成. 基于TD-HSDPA系统的新型调度算法[J]. 通信学报, 2010, 31(3): 75-81 |
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| 作者姓名： | 崔杰 常永宇 刘淑慧 杨大成 |
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| 作者单位： | 北京邮电大学信息与通信工程学院,北京,100876 |
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| 摘 要： | 通过对TD-HSDPA (TD-SCDMA高速下行分组接入技术)中关键技术的分析,研究了CQI(信道质量信息)的反馈时延对系统性能的影响,分析了信令开销与反馈准确性之间的联系;同时提出了一种基于TD-HSDPA系统的新型调度算法,此算法通过对调度流程和优先级计算方式的改进,能够有效地避免CQI反馈时延对于Node B(基站)快速调度器的调度效率和准确性的影响.通过对系统级仿真结果的分析,证明在系统负载持续增加的情况下,新算法能够有效地保证小区吞吐量和分组业务的延时性能.
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| 关 键 词： | 自适应调制编码 混合自动重传请求 高速下行分组接入 调度算法 |
Novel scheduling algorithm for TD-HSDPA systems |
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| CUI Jie,CHANG Yong-yu,LIU Shu-hui,YANG Da-cheng. Novel scheduling algorithm for TD-HSDPA systems[J]. Journal on Communications, 2010, 31(3): 75-81 |
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| Authors: | CUI Jie CHANG Yong-yu LIU Shu-hui YANG Da-cheng |
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| Affiliation: | CUI Jie,CHANG Yong-yu,LIU Shu-hui,YANG Da-cheng (School of Information , Telecommunication Engineening,Beijing University of Posts , Telecommunications,Beijing 100876,China) |
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| Abstract: | According to the existed analysis reports of key techniques in TD-HSDPA (TD-SCDMA high speed downlink packet access) systems, the impact of CQI (channel quality information) feedback delay upon the system performance was studied, and the relationship between signaling overhead and feedback precision was also illuminated. As the effi- ciency and precision of fast-scheduler in Node B were always influenced by the CQI feedback delay, a novel scheduling algorithm, for which the scheduling process and the priori... |
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| Keywords: | AMC HARQ TD-HSDPA scheduling |
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