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mpCUBIC: A CUBIC-like Congestion Control Algorithm for Multipath TCP
In Multiptah TCP, the congestion control is realized by individual sub-flows (conventional TCP connections). However, it is required to avoid increasing congestion window too fast resulting from subflows’ increas-ing their own congestion windows independently. So, a coupled in-crease scheme of congestion windows, called Linked Increase Adapta-tion, is adopted as a standard congestion control algorithm for sub-flows comprising a MPTCP connection. But this algorithm supposes that TCP connections use AIMD based congestion control, and if high speed algorithms such as CUBIC TCP are used, the throughput of MPTCP connections might be decreased. This paper proposes a new high speed MPTCP congestion control scheme, mpCUBIC, based on CUBIC TCP.