Stefan Holmer

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Video conferencing applications require low latency and high bandwidth. Standard TCP is not suitable for video conferencing since its reliability and in order delivery mechanisms induce large latency. Recently the idea of using the delay gradient to infer congestion is appearing again and is gaining momentum. In this paper we present an algorithm that is(More)
This document proposes an RTP header extension and an RTCP message for use in congestion control algorithms for RTP-based media flows. It adds transport-wide packet sequence numbers and corresponding feedback message so that congestion control can be performed on a transport level at the send-side, while keeping the receiver dumb.
Google congestion control (GCC) has been proposed for the case of delay sensitive traffic (i.e. video-conference) in the WebRTC framework. In this paper we analyze the effect of wireless channel outages on the GCC. We have observed that, when a channel outage ends, there are packets that arrive at the receiver as a burst. This behavior impairs the(More)
The purpose of this report is to inform fellow students of what the differences between the scheduling algorithms in RTLinux and VxWorks are, and when it's appropriate to use them. We describe the two scheduling algorithms used in RTLinux, namely Earliest-deadline-first (EDF) and Rate-monotonic (RM). In VxWorks we describe round-robin (RR) and preemptive(More)
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