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Performance modeling and analysis of window-controlled multimedia flows in wireless/wired networks

In this paper, we develop a novel analytical framework for modeling and quantifying the performance of window-controlled multimedia flows in a hybrid wireless/wired network. The framework captures the traffic characteristics of window-controlled flows and is applicable to various wireless links and packet transmission schemes. We show analytically the relationship between the sender window size, the wireless link throughput distribution, and the delay distribution. We then substantiate the analysis by demonstrating how to statistically bound the end-to-end delay of flows controlled by a TCP-like datagram congestion control protocol (DCCP) over an M-state Markovian wireless link. Simulation results validate the analysis and demonstrate the effectiveness and efficiency of the proposed delay control scheme. The scheme can also be applied to other window-based transport layer protocols