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http://dx.doi.org/10.6109/jkiice.2017.21.6.1127

Design of MPTCP Congestion Control based on BW measurement for Wireless Networks  

Kim, Min Sub (Department of Radio and Information Communications Engineering, Chungnam National University)
Lee, Jae Yong (Department of Radio and Information Communications Engineering, Chungnam National University)
Kim, Byung Chul (Department of Radio and Information Communications Engineering, Chungnam National University)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.21, no.6, 2017 , pp. 1127-1136 More about this Journal
Abstract
In wireless networks, the packet loss due to the bit error is misinterpreted as loss due to the congestion state, so TCP congestion control occurs frequently and performance degradation occurs. This degradation also occurs in MPTCP(Multipath TCP), which is an extension protocol of original TCP. In MPTCP, the overall performance of the multipath is degraded. In this paper, we propose a congestion control scheme which measures the bandwidth on each path of MPTCP and reduces the congestion window size by the measured bandwidth when packet loss occurs, in order to solve the MPTCP performance degradation in the wireless environment. We also implemented the proposed congestion control in the Linux kernel and compared it with the original MPTCP in the testbed and real wireless networks. Experimental results show that the proposed congestion control has better throughput performance than original MPTCP congestion control in the wireless environment.
Keywords
Multipath TCP; MPTCP; Congestion control; Wireless netwrks; TCP;
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