Abstract
This paper proposes a novel paradigm for network congestion control. Instead of perpetual conflict as in TCP, a proof-of-concept first-ever protocol enabling inter-flow communication without infrastructure support thru a side channel constructed on generic FIFO queue behaviour is presented. This enables independent flows passing thru the same bottleneck queue to communicate and achieve fair capacity sharing and a stable equilibrium state in a rapid fashion.
Highlights
Recent advances in rateless erasure codes [16, 22] enable to separate reliability from rate/congestion control for general purpose unicast transport protocols [15]
Instead of perpetual conflict as in Transmission Control Protocol (TCP), a proof-of-concept first-ever protocol enabling inter-flow communication without infrastructure support thru a side channel constructed on generic First in First out (FIFO) queue behaviour is presented
Jitter seems to be better suited as an additional control signal than Round-Trip Delay Time (RTT) as it describes only the one way delay changes triggered by changed path load, it is more stable as it cannot be affected by the load of the reverse path
Summary
Recent advances in rateless erasure codes [16, 22] enable to separate reliability from rate/congestion control for general purpose unicast transport protocols [15]. Because all the affected flows react the same way, the effect is flow synchronization [28] [23] More generally speaking this behaviour is not TCP-specific, congestion can be utilized for synchronizing into a stable equilibrium state, where instead of aggressively reducing the rate as TCP does, flows stop increasing their rate and only reduce it so that packet loss or queuing doesn’t occur, stabilize the overflowing buffer, reaching and holding the full capacity of the bottleneck. We present a proof of concept and explore the possibility of using this mechanism for congestion control
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