Performance Evaluation of Multipath TCP Using Multiple LTE Internet Service Provider Networks

초록

As the contents used on the Internet are diversified and the quality has increased, the required network bandwidth has increased rapidly. The IETF proposed MPTCP (Multipath TCP), a transport layer standard protocol, to support high bandwidth services by aggregating multiple subflows on various interfaces. Therefore, higher quality service can be provided to users by aggregating heterogeneous networks such as WiFi/LTE or LTE networks of multiple operators using equipment with MPTCP function. However, since it is difficult to add the MPTCP function to all devices on the Internet, multipath aggregation techniques using an MPTCP proxy on the transmission path are being researched. In this paper, KT and SKT LTE networks were aggregated using an MPTCP router and MPTCP proxy to increase network throughput, and a test for performance improvement was performed in a real environment. In addition, the previously proposed MPTCP scheduler and congestion control algorithm was applied to the LTE environment, and the performance of the single LTE operator network and the multi-LTE operator network were compared and analyzed. © 2023, Korean Institute of Communications and Information Sciences. All rights reserved.

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