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MuSher: An Agile Multipath-TCP Scheduler for Dual-Band 802.11ad/ac Wireless LANs

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MuSher_An_Agile_Multipath-TCP.pdf (2.664Mb)
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URI: http://hdl.handle.net/20.500.12761/752
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Author(s)
Kumar Saha, Swetank; Aggarwal, Shivang; Pathak, Rohan; Koutsonikolas, Dimitrios; Widmer, Joerg
Date
2019-10-21
Abstract
802.11ac interfaces. The former provides multi-Gbps rates but is susceptible to blockage, whereas the latter is slower but offers reliable connectivity. A fundamental challenge is thus how to combine those complementary technologies, to make the most of the advantages they offer. In this work, we explore leveraging Multipath TCP (MPTCP) to use both interfaces simultaneously in order to achieve a higher overall throughput as well as seamlessly switching to a single interface when the other one fails. We find that standard MPTCP often performs sub-optimally and may even yield a throughput much lower than that of single path TCP over the faster of the two interfaces. We analyze the cause of these performance issues in detail and then design MuSher, an agile MPTCP scheduler that allows MPTCP to fully utilize the channel resources available to both interfaces. Our evaluation in realistic scenarios shows that MuSher provides a throughput improvement of up to 1.5x/2.3x and speeds up the recovery of a traffic stream, after disruption, by a factor of up to 8x/75x, under WLAN/Internet settings respectively, compared to the default MPTCP scheduler.
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Files
MuSher_An_Agile_Multipath-TCP.pdf (2.664Mb)
Identifiers
URI: http://hdl.handle.net/20.500.12761/752
Metadata
Show full item record

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