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Analytical Modeling of Multipath TCP Over Last-Mile Wireless

Publication Type : Journal Article

Publisher : IEEE/ACM Transactions on Networking

Source : IEEE/ACM Transactions on Networking, Volume 25, Issue 3, p.1876-1891 (2017)

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Keywords : admission control, Algorithm design and analysis, Analytical models, AP, Cellular, cellular radio, Couplings, droptail buffer, finite access point, fixed point analysis, Heterogeneous wireless network, IEEE 802.11 Standard, Internet, Multipath TCP, multipath TCP coupled congestion control protocol, multiple long-lived multipath transmission control protocol, NS-2 simulation, Protocols, remote server, Throughput, throughput unfairness, transport protocols, Wi-Fi, Wi-Fi last-mile, wireless cellular last-mile, wireless communication, wireless LAN

Campus : Bengaluru

School : School of Engineering

Center : Electronics Communication and Instrumentation Forum (ECIF)

Department : Electronics and Communication

Verified : Yes

Year : 2017

Abstract : We develop a comprehensive analytical model for multiple long-lived multipath Transmission Control Protocol (TCP) connections downloading content from a remote server in the Internet using parallel paths with Wi-Fi and cellular last-miles. This is the first analytical model developed in the literature that captures the coupling between the paths through heterogeneous wireless networks where the coupling arises due to the multipath TCP coupled congestion control protocol. The model also takes into account the impact of the shared nature of the wireless medium and the finite access point (AP) buffer in the Wi-Fi last-mile. The accuracy of the proposed model is demonstrated via extensive ns-2 simulations. Furthermore, we discover a new type of throughput unfairness among the competing regular and multipath TCP connections going through the same AP with a droptail buffer; the regular TCP connections essentially steal almost all the Wi-Fi bandwidth away from the multipath TCP connections. To tackle this problem, we present two simple solutions utilizing our analytical model and achieve fairness.

Cite this Research Publication : S. R. Pokhrel, Manoj Kumar Panda, and Hai Le Vu, “Analytical Modeling of Multipath TCP Over Last-Mile Wireless”, IEEE/ACM Transactions on Networking, vol. 25, no. 3, pp. 1876-1891, 2017.

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