AED: An Accurate and Explicit Loss Differentiation Mechanism

Vijay Arya 1 Thierry Turletti 1
1 PLANETE - Protocols and applications for the Internet
Inria Grenoble - Rhône-Alpes, CRISAM - Inria Sophia Antipolis - Méditerranée
Abstract : In recent years mobile computing has experienced an explosive growth, mainly due to the integration of wireless networks with the wired Internet. To deploy bandwidth-greedy multimedia applications on such heterogeneous environments, efficient congestion control algorithms are required. Indeed, in such a scenario, a packet can cross several wired and wireless links before eventually reaching its destination. When congestion control protocols such as TFRC are used transmit multimedia flows, they need to differentiate between congestion losses and wireless losses to behave correctly and efficiently. Currently proposed end-to-end loss differentiation mechanisms can not reliably predict the differences between congestion and wireless losses. In this paper, we explore explicit loss differentiation. We have designed a simple window framework to explicitly and accurately differentiate these losses. By deploying agents at the boundaries of wireless links, we show that we can efficiently implement our window-based scheme with low overhead. We also point out current limitations of our scheme.
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Vijay Arya, Thierry Turletti. AED: An Accurate and Explicit Loss Differentiation Mechanism. [Research Report] RR-4587, INRIA. 2002. ⟨inria-00071998⟩

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