Video Conferencing and Flow-Rate Fairness: A First Look at Zoom and the Impact of Flow-Queuing AQM

Congestion control is essential for the stability of Internet and corresponding algorithms are commonly evaluated interoperability based on flow-rate fairness. In contrast, video conferencing software such as Zoom uses custom congestion whose fairness behavior mostly unknown. Aggravatingly, has recently seen a drastic increase in use - partly caused by COVID-19 pandemic could hence negatively affect how available resources shared. this paper, we thus investigate at example influences deploying AQM. We find that slow to react bandwidth changes two three times TCP low-bandwidth scenarios. Moreover, also when competing with delay aware BBR, see high queuing delays. AQM reduces these delays can equalize used flow-queuing. However, it then introduces packet loss Zoom, leaving question Zoom's QoE. show preliminary user study appendix which indicates QoE least not improved should be studied further.