Receiver-Assisted Congestion Control to Achieve High Throughput in Lossy Wireless Networks

Receiver-Assisted Congestion Control to Achieve High Throughput in Lossy Wireless Networks
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接收器辅助拥塞控制可在有损无线网络中实现高吞吐量

DOI:
10.1109/tns.2009.2037622
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发表时间:
2010-04
影响因子:
1.8
通讯作者:
Shu, Yantai
Shu, Yantai
中科院分区:
工程技术3区
文献类型:
--
作者:
Shi, Kai;Luo, Jiarong;Yang, Oliver;Shu, Yantai

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在当今的高速无线网络中,许多应用都需要快速的数据传输。然而,由于其保守的拥塞控制算法,传输控制协议(TCP)不能有效地利用网络容量在有损无线网络。在本文中,我们提出了一种接收器辅助拥塞控制机制(RACC),其中发送器执行基于丢失的控制,而接收器执行基于延迟的控制。接收方根据数据包到达间隔测量网络带宽,并使用它来计算被认为适合发送方的拥塞窗口大小。在从接收器接收到通告值反馈之后,发送器然后使用加法增加和乘法减少(AIMD)机制来计算要使用的正确拥塞窗口大小。通过结合基于丢失和基于延迟的拥塞控制,我们的机制可以减轻无线丢失的影响,减轻超时效应,从而更好地利用网络带宽。仿真和实验结果表明,该机制在高速、有损的无线环境中具有优于传统TCP的性能。
Many applications would require fast data transfer in high-speed wireless networks nowadays. However, due to its conservative congestion control algorithm, Transmission Control Protocol (TCP) cannot effectively utilize the network capacity in lossy wireless networks. In this paper, we propose a receiver-assisted congestion control mechanism (RACC) in which the sender performs loss-based control, while the receiver is performing delay-based control. The receiver measures the network bandwidth based on the packet interarrival interval and uses it to compute a congestion window size deemed appropriate for the sender. After receiving the advertised value feedback from the receiver, the sender then uses the additive increase and multiplicative decrease (AIMD) mechanism to compute the correct congestion window size to be used. By integrating the loss-based and the delay-based congestion controls, our mechanism can mitigate the effect of wireless losses, alleviate the timeout effect, and therefore make better use of network bandwidth. Simulation and experiment results in various scenarios show that our mechanism can outperform conventional TCP in high-speed and lossy wireless environments.
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