Improving TCP-friendliness and Fairness for mHIP

Multihomed environments are getting increasingly common, especially for mobile users. mHIP was designed to provide secure multipath data transmission for the multihomed hosts and boost throughput of a single TCP connection by effectively distributing data over multiple available paths. In this paper we develop a TCP-friendly congestion control scheme for mHIP secure multipath scheduling solution. We enable two-level control over aggressiveness of the multipath flows to prevent stealing bandwidth from the traditional transport connections in the shared bottleneck. We demonstrate how to achieve a desired level of friendliness at the expense of inessential performance degradation. A series of simulations verifies that mHIP meets the criteria of TCP-compatibility, TCP-equivalence and TCP-equal share, preserving friendliness to UDP and another mHIP traffic. Additionally we show that the proposed congestion control scheme improves TCP-fairness of mHIP.