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arXiv 1909.02601cs.NI
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2比1大吗?:野外双LTE多径TCP分析

Is two greater than one?: Analyzing Multipath TCP over Dual-LTE in the Wild

Nitinder Mohan, Tanya Shreedhar, Aleksandr Zavodovski, Jussi Kangasharju, Sanjit K. Kaul

摘要:

多路径TCP(MPTCP)是一种标准化的TCP扩展,它允许终端主机同时利用其所有网络接口。最近双SIM移动电话的激增使得多LTE MPTCP设置成为一个有吸引力的选择。我们在受控和野外环境中,在低速和高速移动场景下,对两个LTE连接上的MPTCP进行了为期五个月的广泛测量。我们的研究结果表明,MPTCP性能在高速下降,由于信号强度下降和衰减的频率增加。两个LTE路径都经历频繁的变化,这导致次优的子流利用。我们还发现,虽然路径变化是不可预测的,其对MPTCP的影响遵循确定性的趋势。最后,我们表明,这两个应用程序的流量模式和拥塞控制变种影响MPTCP的适应性在高速。

英文摘要:

Multipath TCP (MPTCP) is a standardized TCP extension which allows end-hosts to simultaneously exploit all of their network interfaces. The recent proliferation of dual-SIM mobile phones makes multi-LTE MPTCP setup an attractive option. We perform extensive measurements of MPTCP over two LTE connections in low and high-speed mobility scenarios over five months, both in controlled and in-the-wild environments. Our findings indicate that MPTCP performance decreases at high speeds due to increased frequency of signal strength drops and handovers. Both LTE paths experience frequent changes which result in a sub-optimal subflow utilization. We also find that while path changes are unpredictable, their impact on MPTCP follows a deterministic trend. Finally, we show that both application traffic patterns and congestion control variants impact MPTCP adaptability at high speeds.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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