Re: [httpstreaming] QoE feedback support

David Singer <singer@apple.com> Wed, 10 November 2010 13:08 UTC

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From: David Singer <singer@apple.com>
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Date: Wed, 10 Nov 2010 14:09:09 +0100
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To: Ali C. Begen (abegen) <abegen@cisco.com>
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Cc: Ingemar Johansson S <ingemar.s.johansson@ericsson.com>, httpstreaming <httpstreaming@ietf.org>
Subject: Re: [httpstreaming] QoE feedback support
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On Nov 10, 2010, at 13:52 , Ali C. Begen (abegen) wrote:

> I really find it very unattractive to call this stuff QoE reporting/feedback. Give me one example on what metric would measure my level of pleasure from a streaming service ;)
> 
> -acbegen
> 
>> -----Original Message-----
>> From: httpstreaming-bounces@ietf.org [mailto:httpstreaming-bounces@ietf.org] On Behalf Of Ingemar Johansson S
>> Sent: Wednesday, November 10, 2010 8:42 PM
>> To: httpstreaming
>> Subject: [httpstreaming] QoE feedback support
>> 
>> FYI
>> 
>> This document describes how QoE support is proposed for HTTP streaming in 3GPP.
>> http://www.3gpp.org/ftp/tsg_sa/WG4_CODEC/Ad-hoc_MBS/Docs_AHI/S4-AHI118.zip
>> I suspect that there exist a newer version and/or a better description.
>> 

we were actually just discussing this area at a 3G meeting, and I realized that there are really two kinds of metrics it is useful to get from clients:

a) truly Qo Experience, that is, experiential metrics -- the mismatch between the user's expectation, and reality (tune-in delay, media they wanted to see but did not, and so on)
b) operational metrics -- amount of data fetched, buffer sizes maintained, and so on

There are some in the middle, like bandwidth experienced, which are both operational and affect experience.

David Singer
Multimedia and Software Standards, Apple Inc.