异构网络中的丢包区分和拥塞控制机制

doi:10.3969/j.issn.0255-8297.2015.03.002

应用科学学报 ›› 2015, Vol. 33 ›› Issue (3): 234-242.doi: 10.3969/j.issn.0255-8297.2015.03.002

异构网络中的丢包区分和拥塞控制机制

靳玉宝，董育宁

南京邮电大学通信与信息工程学院，南京210003

收稿日期:2013-01-31 修回日期:2014-11-06 出版日期:2015-05-30 发布日期:2014-11-06
作者简介:董育宁，教授，博导，研究方向：无线网络与多媒体通信，E-mail: dongyn@njupt.edu.cn
基金资助:
国家自然科学基金(No.60972038, No.61271233)；教育部高等学校博士学科点专项科研基金
(No.20103223110001)资助

Packet Loss Differentiation and Congestion Control in Heterogeneous Networks

JIN Yu-bao, DONG Yu-ning

College of Telecommunication and Information Engineering, Nanjing University of Posts and
Telecommunications, Nanjing 210003, China

Received:2013-01-31 Revised:2014-11-06 Online:2015-05-30 Published:2014-11-06

摘要/Abstract

摘要： 现有异构网络传输控制协议不能准确估计网络状态，缺乏有效的丢包区分机制. 为此，提出一种基于效用估计的丢包区分算法，并将其应用于多媒体业务TCP 友好传输控制协议. 该算法将网络状态估计算法和差异化丢包区分算法相结合，根据分组到达时间间隔估计当前网络的可用带宽，计算效用参数并估计网络状态，自适应地选取合理的区分机制，以准确区分无线-有线异构网络中拥塞/无线丢失，提升多媒体传输控制协议性能. 实验部分比较了该算法与现有文献方法的仿真性能.

关键词: 传输控制, 丢包区分算法, 异构网络, 拥塞控制, TCP友好

Abstract: The existing transmission control mechanism lacks effective method in network
state estimation and packet loss differentiation. To deal with the problem, this paper
proposes a loss differentiation algorithm (LDA), utility based LDA (UBLDA) capable of
estimating the network state (congestion or not) by calculating utility parameters based on
the interval of packet arrival and sending rate. UBLDA can choose appropriate differentiation
scheme based on the state estimation, and integrate with a TCP friendly transmission
control protocol. It is a new multimedia transmission control mechanism suitable for wiredwireless
heterogeneous networks. Simulations are performed to compare the performance
of the proposed algorithm with existing methods.

Key words: transmission control, loss differentiation algorithm, heterogeneous network, congestion control, TCP friendly

中图分类号:

TN919.8

靳玉宝，董育宁. 异构网络中的丢包区分和拥塞控制机制[J]. 应用科学学报, 2015, 33(3): 234-242.

JIN Yu-bao, DONG Yu-ning. Packet Loss Differentiation and Congestion Control in Heterogeneous Networks[J]. Journal of Applied Sciences, 2015, 33(3): 234-242.

参考文献

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[11] 周正武，董育宁. IP网络实时视频流的传输控制算法AVTC的研究[J]. 计算机研究与发展，2004, 41 (5): 812-820.

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异构网络中的丢包区分和拥塞控制机制

Packet Loss Differentiation and Congestion Control in Heterogeneous Networks

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