Rate adaptation refers to the process by which a transmitting process adjusts its transmission rate to match that of the absorbing process.

Rate adaptation is part of the suite of techniques used to implement flow control in a communication network. It is a flow control technique which is managed by the edge transmitting entity. One of the best known techniques of rate adaptation is that used by the TCP protocol to adjust its transmission rate.

THEORY OF RATE ADAPTATION

Consider a network with a clearing rate N and a combined buffering capability B. There are J transmitters in the network, with throughput Xj(t). Rate adaptation requires the throughputs to be set to their individual optimal values without overflowing buffering capability. I.e.
maximize sum(U(Xj(t)) while sum(Integral 0 to T(Xj(t)) <= NT+B for all values of T.


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  • Recent comments:
    Ish Babbar:How can we adapt this theory in case Network clearing rate is not constant ( N) ( example internet, where transmitters throughput can't be defined/predicted at given time) ? Only thing in our control will be B or Xj(t) !
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