| 适合VoIP/FTP混合业务的无线链路分组调度算法 |
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| 引用本文： | 易鸣,季新生,郭淑明.适合VoIP/FTP混合业务的无线链路分组调度算法[J].信息工程大学学报,2010,11(4):415-419. |
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| 作者姓名： | 易鸣 季新生 郭淑明 |
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| 作者单位： | 信息工程大学,国家数字交换系统工程技术研究中心,河南,郑州,450002 |
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| 基金项目： | 国家863计划资助项目 |
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| 摘 要： | 首先分析了VoIP业务对系统容量的影响,得出在一定的业务负载下,实时业务与非实时业务两者并不是绝对矛盾的,为了提高系统吞吐量,当VoIP类业务QoS要求能够得到满足时,应该适当增加FTP类业务的优先级。然后以因特网中的主动队列管理思想为基础,根据VoIP业务特点,提出了基于主动首丢弃的无线链路分组调度算法。仿真表明,算法在系统吞吐量和QoS保障上均有较好的表现。
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| 关 键 词： | 主动首丢弃 分组调度 无线网络 混合业务 |
Packet Scheduling Algorithm for Mixed VoIP/FTP Traffic in Wireless Network |
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| YI Ming,JI Xin-sheng,GUO Shu-ming.Packet Scheduling Algorithm for Mixed VoIP/FTP Traffic in Wireless Network[J].Journal of Information Engineering University,2010,11(4):415-419. |
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| Authors: | YI Ming JI Xin-sheng GUO Shu-ming |
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| Affiliation: | (National Digital Switching System Engineering ＆ Technological Research Center,Information Engineering University,Zhengzhou 450002,China) |
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| Abstract: | The paper analyses the system throughput under the influence of the VoIP traffic,and concludes that there is not an absolute contradiction between real-time and unreal-time traffic under some traffic load.To guarantee a certain degree of throughput while the VoIP traffic has reached its own QoS requirements,priority of FTP traffic should be increased.The paper also proposes an improved packet scheduling algorithm called Voluntary Dropping-from-front Scheduling for wireless link derived from the idea of active queue management in Internet.Simulation results show that it has good performance not only in QoS but also in system throuput. |
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| Keywords: | voluntary dropping-from-front packet scheduling wireless network mixed traffic |
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