The authors present an end-to-end adaptation scheme, called the enhanced loss-delay based adaptation algorithm (LDA+), for regulating the transmission behavior of multimedia senders in accordance with the network congestion state. LDA+ uses the real-time transport protocol (RTP) for collecting loss and delay statistics which are then used for adjusting the transmission behavior of the senders in a manner similar to TCP connections suffering from similar losses and delays. Performance results collected using simulations and measurements over the Internet suggest the efficiency of LDA+ in terms of network utilization, congestion avoidance and fairness towards competing TCP connections.
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