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南通大学计算机科学与技术学院,江苏 南通 226019
[ "陈亮(1982-),男,江苏南通人,博士,南通大学副教授,主要研究方向为ad hoc网络、网络拥塞控制、网络性能分析及优化。" ]
[ "顾翔(1973-),男,江苏南通人,博士,南通大学教授,主要研究方向为网络协议、无线传感器网络、车联网。" ]
[ "王进(1981-),男,江苏海安人,博士,南通大学副教授,主要研究方向为Web智能、推荐系统、不确定性推理。" ]
网络出版日期:2017-03,
纸质出版日期:2017-03-15
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陈亮, 顾翔, 王进. 多速率多节点IEEE 802.11网络的视频传输策略[J]. 通信学报, 2017,38(3):34-44.
Liang CHEN, Xiang GU, Jin WANG. Video transmission strategy in multi-rate and multi-node IEEE 802.11 networks[J]. Journal on communications, 2017, 38(3): 34-44.
陈亮, 顾翔, 王进. 多速率多节点IEEE 802.11网络的视频传输策略[J]. 通信学报, 2017,38(3):34-44. DOI: 10.11959/j.issn.1000-436x.2017059.
Liang CHEN, Xiang GU, Jin WANG. Video transmission strategy in multi-rate and multi-node IEEE 802.11 networks[J]. Journal on communications, 2017, 38(3): 34-44. DOI: 10.11959/j.issn.1000-436x.2017059.
针对多速率多节点IEEE 802.11网络的视频传输公平性问题,提出了基于节点队列选择性分组丢失与竞争窗口值动态调整的低速视频节点的队列与竞争窗口(VQCW
video queue contention window)算法。由于网络的吞吐量与初始竞争窗口有较大关系,基于初始竞争窗口值,推导了最大吞吐量计算模型,为吞吐量性能改进提供理论上限。理论建模与NS仿真显示,该策略既可保证视频传输质量,又可将网络总吞吐量维持在较高水平。
The video transmission strategy VQCW (video queue contention window) was proposed for video transmission fair problem in multi-rate and multi-node IEEE 802.11 networks.The strategy was based on node queue selective packet drop and contention window dynamic adjustment.It deduced a maximum throughput model according to initial contention window size because of the relation between throughput and initial contention window size.This model can provide theoretical upper limit for improving throughput.The theoretical modeling and NS simulation show that the proposed strategy can maintain both video transmission quality and high network overall throughput.
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