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清华大学学报(自然科学版)  2017, Vol. 57 Issue (3): 293-298    DOI: 10.16511/j.cnki.qhdxxb.2017.26.012
  电子工程 本期目录 | 过刊浏览 | 高级检索 |
一种航空Ad hoc网络优先级权重速率控制算法
高晓琳1,3, 晏坚2, 陆建华1
1. 清华大学 电子工程系, 北京 100084;
2. 清华大学 宇航技术研究中心, 北京 100084;
3. 北京航天飞行控制中心, 北京 100094
Priority weighted rate control algorithm in aeronautical Ad hoc networks
GAO Xiaolin1,3, YAN Jian2, LU Jianhua1
1. Department of Electronic Engineering, Tsinghua University, Beijing 100084, China;
2. Tsinghua Space Center, Tsinghua University, Beijing 100084, China;
3. Beijing Aerospace Control Center, Beijing 100094, China
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摘要 针对现有航空Ad hoc网络的媒体接入控制(media access control,MAC)协议存在信道资源分配缺乏公平性的问题,该文提出一种优先级权重速率控制(priority weighted rate control,PWRC)算法。该算法在MAC层上采用加权队列模型,利用业务的优先级及权重值共同控制业务的降速因子,达到在保证高优先级业务服务质量(quality of ser-vice,QoS)的同时提升信道资源利用的公平性。仿真结果表明:与现有MAC协议相比,使用该方法时相同优先级业务的公平性指数接近理论上限1,对信道资源的利用率最高可提升40%;同时,可降低相同优先级业务平均端到端延时及延时抖动。
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关键词 航空Ad hoc网络媒体接入控制(MAC)优先级权重值权重公平队列(WFQ)服务质量(QoS)    
Abstract:Current media access control (MAC) protocols for aeronautical Ad hoc networks can not achieve fair channel resource utilization. This paper describes a priority weighted rate control (PWRC) algorithm, which uses the fair queuing model in the MAC layer. The traffic speed reduction factor is determined by its priority and weight. The PWRC guarantees the quality of service (QoS) while the channel resource is fairly utilized. Simulations indicate that the traffic fairness index with the same priority is closer to the upper band 1 than with existing MAC protocols. The channel resource utilization is improved about 40% and the end-to-end delay and jitter are reduced.
Key wordsaeronautical Ad hoc networks    media access control(MAC)    priority    weight    weight fair queue(WFQ)    quality of service(QoS)
收稿日期: 2016-11-11      出版日期: 2017-03-15
ZTFLH:  TP311.51  
通讯作者: 晏坚,副研究员,E-mail:yanjian_ee@tsinghua.edu.cn     E-mail: yanjian_ee@tsinghua.edu.cn
引用本文:   
高晓琳, 晏坚, 陆建华. 一种航空Ad hoc网络优先级权重速率控制算法[J]. 清华大学学报(自然科学版), 2017, 57(3): 293-298.
GAO Xiaolin, YAN Jian, LU Jianhua. Priority weighted rate control algorithm in aeronautical Ad hoc networks. Journal of Tsinghua University(Science and Technology), 2017, 57(3): 293-298.
链接本文:  
http://jst.tsinghuajournals.com/CN/10.16511/j.cnki.qhdxxb.2017.26.012  或          http://jst.tsinghuajournals.com/CN/Y2017/V57/I3/293
  图1 调度接入模型
  表1 仿真参数表
  图2 优先级p4业务FI
  图3 优先级p4业务总吞吐量
  图4 基于优先级退避参数的吞吐量
  图5 PWRC算法的吞吐量
  表3 平均延时、延时抖动
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