Re: [Starlink] Researchers Seeking Probe Volunteers in USA

["Livingood, Jason" <Jason_Livingood@comcast.com>]

> AFAIK, quality of service (QoS) refers to network characteristics you
can measure quantitatively without human opinion being involved, i.e.:
throughput, latency and packet losses, also availability (MTBF/(MTBF +
MTTR)). Then, quality of experience (QoE) refers to what the users
experience, it is subjective, it must be done using subjects that are
not engineers or telecom technicians, and it is defined by the ITU as
the MOS (Mean Opinion Score), in Recommendation ITU-T P.800.1.

ISTM that everyone has a different view of QoS & QoE. My view is that QoS refers to DSCP marking and such (so best effort, priority, less than best effort, etc.) and/or some metric that the *network* is configured to deliver. But...these are all proxies for end user QoE, which used to be difficult to measure individually but is now easy/affordable to do at scale. IMO all that really matters is the end user experience, and that can be quantitatively measured (link capacity at peak hour, responsiveness/working latency, uptime) and qualitatively measured.  After all, the end user does not care about what the network is in theory configured to delivery but only their actual experience using the Internet. __