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[ "丁家瑞(1990-),男,北京大学信息科学技术学院硕士生,主要研究方向为信号处理、绿色通信和无线通信协议。" ]
[ "刘凯(1990-),男,北京大学信息科学技术学院硕士生,主要研究方向为无线通信系统和绿色无线通信节能技术。" ]
[ "孙婕(1992-),女,北京大学信息科学技术学院硕士生,主要研究方向为无线通信系统、无线通信协议。" ]
[ "刘志敏(1963-),女,北京大学信息科学技术学院副教授,主要研究方向为移动通信、无线资源管理和绿色无线通信节能技术。" ]
网络出版日期:2016-04,
纸质出版日期:2016-04-20
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丁家瑞, 刘凯, 孙婕, 等. LTE系统视频业务的调度算法[J]. 电信科学, 2016,32(4):83-91.
Jiarui DING, Kai LIU, Jie SUN, et al. A scheduling algorithm for optimizing video traffic[J]. Telecommunication science, 2016, 32(4): 83-91.
丁家瑞, 刘凯, 孙婕, 等. LTE系统视频业务的调度算法[J]. 电信科学, 2016,32(4):83-91. DOI: 10.11959/j.issn.1000-0801.2016109.
Jiarui DING, Kai LIU, Jie SUN, et al. A scheduling algorithm for optimizing video traffic[J]. Telecommunication science, 2016, 32(4): 83-91. DOI: 10.11959/j.issn.1000-0801.2016109.
实时性是评价实时视频业务的重要指标之一,目前针对实时视频业务的已有调度算法还存在严重的时延拖尾现象。重点研究了该问题,在分析已有调度算法的基础上,提出了“最大吞吐率—最大权重时延优先”(modified largest weighted delay first,MT-LWDF)算法;理论分析了算法中β参数的取值范围,并通过仿真确定β的最优解,在此基础上,对视频业务的平均时延、最大时延、业务速率、丢帧率等性能进行了仿真,并与其他6种算法进行对比。结果表明,提出的MT-LWDF 算法在优化视频业务的速率的基础上,有效降低时延拖尾现象。
Real-time is an important criterion for evaluation of the real-time video traffic. Most of the existing scheduling algorithms have a wide distribution of user time delay. Firstly,based on the analysis of the existing scheduling algorithms and system rate,an algorithm called MT-LWDF was proposed. Secondly,obtained the range of β after the theoretical analysis,the optimal value of β was got by computer simulation. Then,β was set with the optimal value,the simulation relating to average delay of the system,maximum delay of the users,rate of the system,video frame loss rate and other performance was done. And the results indicate that MT-LWDF algorithm can reduce the distribution of user delay at the same time of optimizing the rate of the system.
3GPP. Group radio access network-requirements for evolved UTRA(E-UTRA)and evolved UTRAN(E-UTRAN):3GPP TS 25.913 [S ] . 2007 .
Standardized QCI characteristics. Group services and system aspects-policy and charging control architecture (Release 13):3GPP TS 23.203 [S ] . 2015 .
RADHAKRISHNAN R , NAYAK A . Cross layer design for efficient video streaming over LTE using scalable video coding [C ] // The 2012 IEEE International Conference on Communications (ICC),June 10-15,2012,Ottawa,ON,Canada . New Jersey : IEEE Press , 2012 : 6509 - 6513 .
刘壮 . LTE系统中下行链路的分组调度算法研究 [D ] . 北京 : 北京邮电大学 , 2014 .
LIU Z . Research on the downlink packet scheduling algorithm in LTE system [D ] . Beijing : Beijing University of Posts and Telecommunications , 2014 .
LIU B , TIAN H , XU L L . An efficient downlink packet scheduling algorithm for real time traffics in LTE systems [C ] // The 2013 Consumer Communications and Networking Conference (CCNC),Jan 11-14,2013,Las Vegas,NV,USA . New Jersey : IEEE Press , 2013 : 364 - 369 .
CAPOZZI F , PIRO G , GRIECO L A , et al . Downlink packet scheduling in LTE cellular networks:key design issues and a survey [J ] . IEEE Communications Surveys & Tutorials , 2013 ( 15 ): 678 - 700 .
WEI K L , CHIH W H , HUAN K T , et al . A LTE downlink scheduling mechanism with the prediction of packet delay [C ] // The 2015 7th International Conference on Ubiquitous and Future Networks(ICUFN),July 7-10,2015 , Sapporo : Japan.[S. l.:s.n.] , 2015 : 257 - 262 .
LIU Y L , ZHU D L , WEI M , et al . A QoE-oriented scheduling scheme for HTTP streaming service in LTE system [C ] // 2015 IEEE Symposium on Computers and Communication(ISCC),July 6-9,2015,Larnaca,Cyprus , New Jersey : IEEE Press , 2015 : 889 - 894 .
Technical Specification Group Radio Access Network. Physical layer procedures for universal terrestrial radio access(UTRA)(Release 12):3GPP TR36.213 [S ] . 2015 .
3GPP R1-070674. Feasibility study for OFDM for UTRAN enhancement:3GPP TR 25.892(Release 6) [S ] . 2004 .
IEEE 802.16 Task Group m. IEEE 802.16m evaluation methodology document(EMD) [S ] . 2009 .
何金薇 , 丁璐 , 刘志敏 . LTE系统级仿真建模实现及其优化 [J ] . 计算机工程与应用 , 2012 , 48 ( 22 ): 104 - 108 .
HE J W , DING L , LIU Z M . The realization of modeling and optimization of LTE system-level simulation [J ] . Computer Engineering and Application , 2012 , 48 ( 22 ): 104 - 108 .
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