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Does the phone actually send the TCP packets multiple times? Then it would certainly put more stress on the network. Does anybody know how fairness compared to

Does the phone actually send the TCP packets multiple times? Then it would certainly put more stress on the network. Does anybody know how fairness compared to non-multipath TCP stacks is achieved?

RobAtticus 13y ago
They discuss the fairness attributes in their NSDI '11 paper: http://static.usenix.org/event/nsdi11/tech/full_papers/Wischik.pdf http://static.usenix.org/event/nsdi11/tech/full_papers/Wisch... It's an interesting read, and it will explain it better than I can.
lambda 13y ago
Multipath TCP sends packets over multiple paths; multiple different connections, such as cellular and WiFi. It doesn't repeat the packets, unless one of them is dropped. It can be used for several purposes; aggregating bandwidth between the paths, taking advantage of the bandwidth of both connections. It can be used for reliability. And it can be used for transparent handover of connections, where you may walk out of your house and switch over from WiFi to cellular seamlessly. LWN has a good article on it: https://lwn.net/Articles/544399/ https://lwn.net/Articles/544399/