| 引用本文: | 段新宇,韩杏玲,吴宣利.LTE系统中基于缓存信息的非实时业务调度算法[J].哈尔滨工业大学学报,2016,48(11):142.DOI:10.11918/j.issn.0367-6234.2016.11.022 |
| DUAN Xinyu,HAN Xingling,WU Xuanli.Non-real-time buffer information based scheduling algorithm in LTE system[J].Journal of Harbin Institute of Technology,2016,48(11):142.DOI:10.11918/j.issn.0367-6234.2016.11.022 |
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| 摘要: |
| 为解决LTE系统中非实时业务调度算法比例公平PF(proportional fair)算法在分组数据业务模型下性能一般的问题，结合分组数据业务特点，在有限缓存队列模型下，提出一种兼顾系统吞吐量和用户公平性的非实时业务调度算法-基于缓存信息的调度BIBS(buffer information based scheduling)算法.该算法综合考虑了用户信道条件和缓存区内待传送的数据包信息.仿真结果表明，在不同平均速率的业务下，与PF算法相比，本文提出的算法在有效地提升系统吞吐量的同时，用户间公平性和通信中断性能也得到了极大的改善.
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| 关键词: LTE 分组数据业务 基于缓存信息的调度算法 吞吐量 公平性 |
| DOI：10.11918/j.issn.0367-6234.2016.11.022 |
| 分类号:TN929.5 |
| 文献标识码:A |
| 基金项目:国家自然科学基金(61301100) |
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| Non-real-time buffer information based scheduling algorithm in LTE system |
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DUAN Xinyu1, HAN Xingling2,WU Xuanli2
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(1.Remote Sensing Technique Center,Heilongjiang Academy of Agricultural Science, Harbin 150086, China; 2.School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150001, China)
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| Abstract: |
| In LTE system, in order to solve the problem that the performance of Proportional Fair (PF) scheduling algorithm for non-real-time traffic is far from optimal in wireless packet service model, we propose a new scheduling algorithm-Buffer Information Based Scheduling (BIBS) Algorithm, which can guarantee the system throughput and user fairness in finite-buffer line model. Simulation results show that compared with PF scheduling algorithm, the proposed algorithm can improve system throughput, user fairness and outage performance in different traffic models with the consideration of instantaneous downlink channel condition and packet data to be transmitted in buffer of each user.
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| Key words: LTE wireless packet service buffer information based scheduling algorithm system throughput fariness |
