[xrblock] Web RTC KPIs - Stream Repair Metrics
"MORTON, ALFRED C (AL)" <acmorton@att.com> Fri, 08 November 2013 15:38 UTC
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From: "MORTON, ALFRED C (AL)" <acmorton@att.com>
To: "xrblock@ietf.org" <xrblock@ietf.org>
Date: Fri, 08 Nov 2013 10:37:28 -0500
Thread-Topic: Web RTC KPIs - Stream Repair Metrics
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Subject: [xrblock] Web RTC KPIs - Stream Repair Metrics
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At the session, I suggested that the Subject metrics might be a good KPI for streams that use classic FEC (i.e., real replacement, not loss concealment). They are simpler to use if the block size is fixed and the corrective power is well known, of course. The metrics estimate when blocks with loss can be corrected, and although this information may already be known at the receiver, reporting in terms of the FEC blocks completely corrected, or alternately losses per block, may be useful. The reference is actually from ITU-T Rec. Y.1540 (one lower than the number I gave in the session), and a free pdf copy is available here: http://www.itu.int/rec/T-REC-Y.1540-201103-I/en Al
- [xrblock] Web RTC KPIs - Stream Repair Metrics MORTON, ALFRED C (AL)