RTCWEB Statistics API draft-huang-xrblock-rtcweb-rtcp-xr-metrics-03 6 March 2014, IETF 89, London R. Huang, R. Even, V. Singh, D. Romascanu, L.Deng 23/03/14 1
related to the transport of audio and video between peers, needed to estimate quality of experience. • W3C StatsAPI points to a stats-registry – alvestrand-rtcweb-stats-registry 23/03/14 2 ietf-rtcweb-use-cases-and-requirements
– Goodput = received-discarded • Loss, Discard Packet Count Metric • Burst Metric for Loss and Discard • ECN related Metrics • RLE for Loss and Discards 23/03/14 5
single burst in an interval, – BurstCount jumps by 1 – Difference between the new and old BurstPacket tells us packet in the burst. • If ongoing burst across two interval, – the BurstCount will not change – But the BurstPacket will increase • If multiple bursts in an interval, – BurstCount jumps by more than 1 – Don’t know how many total packets were lost in each burst? 23/03/14 12