draft-ietf-xrblock-rtcp-xr-qoe-16.txt   draft-ietf-xrblock-rtcp-xr-qoe-17.txt 
Network Working Group A. Clark Network Working Group A. Clark
Internet-Draft Telchemy Internet-Draft Telchemy
Intended status: Standards Track Q. Wu Intended status: Standards Track Q. Wu
Expires: August 30, 2014 Huawei Expires: August 31, 2014 Huawei
R. Schott R. Schott
Deutsche Telekom Deutsche Telekom
G. Zorn G. Zorn
Network Zen Network Zen
February 26, 2014 February 27, 2014
RTP Control Protocol (RTCP) Extended Report (XR) Blocks for MOS Metric RTP Control Protocol (RTCP) Extended Report (XR) Blocks for MOS Metric
Reporting Reporting
draft-ietf-xrblock-rtcp-xr-qoe-16 draft-ietf-xrblock-rtcp-xr-qoe-17
Abstract Abstract
This document defines an RTP Control Protocol (RTCP) Extended Report This document defines an RTP Control Protocol (RTCP) Extended Report
(XR) Block including two new segment types and associated SDP (XR) Block including two new segment types and associated SDP
parameters that allow the reporting of mean opinion score (MOS) parameters that allow the reporting of mean opinion score (MOS)
Metrics for use in a range of RTP applications. Metrics for use in a range of RTP applications.
Status of this Memo Status of this Memo
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/. Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on August 30, 2014. This Internet-Draft will expire on August 31, 2014.
Copyright Notice Copyright Notice
Copyright (c) 2014 IETF Trust and the persons identified as the Copyright (c) 2014 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of (http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
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estimation algorithms. ITU-T or ITU-R recommendations (e.g., estimation algorithms. ITU-T or ITU-R recommendations (e.g.,
[BS.1387-1],[G.107],[G.107.1],[P.862],[P.862.1],[P.862.2],[P.863],[P. [BS.1387-1],[G.107],[G.107.1],[P.862],[P.862.1],[P.862.2],[P.863],[P.
564],[G.1082],[P.1201.1],[P.1201.2],[P.1202.1],[P.1202.2]) define 564],[G.1082],[P.1201.1],[P.1201.2],[P.1202.1],[P.1202.2]) define
methodologies for assessment of the performance of audio and video methodologies for assessment of the performance of audio and video
streams. Other international and national standards organizations streams. Other international and national standards organizations
such as EBU, ETSI, IEC and IEEE also define QoE algorithms and such as EBU, ETSI, IEC and IEEE also define QoE algorithms and
methodologies, and the intent of this document is not to restrict its methodologies, and the intent of this document is not to restrict its
use to ITU recommendations but to suggest that ITU recommendations be use to ITU recommendations but to suggest that ITU recommendations be
used where they are defined. used where they are defined.
This block reports the media quality in the form of a 1-5 MOS range This block reports the media quality in the form of a MOS range
however does not report the MoS score that include parameters outside (e.g., 1-5, 0-10, or 0-100, as specified by the calculation
the scope of the RTP stream, for example signaling performance, mean algorithm) however does not report the MoS score that include
time to repair (MTTR) or other factors that may affect the overall parameters outside the scope of the RTP stream, for example signaling
user experience. performance, mean time to repair (MTTR) or other factors that may
affect the overall user experience.
The MOS Metric reported in this block gives a numerical indication of The MOS Metric reported in this block gives a numerical indication of
the perceived quality of the received media stream, which is the perceived quality of the received media stream, which is
typically measured at the receiving end of the RTP stream. Instances typically measured at the receiving end of the RTP stream. Instances
of this Metrics Block refer by Synchronization source (SSRC) to the of this Metrics Block refer by Synchronization source (SSRC) to the
separate auxiliary Measurement Information block [RFC6776] which separate auxiliary Measurement Information block [RFC6776] which
describes measurement periods in use (see RFC6776 section 4.2). describes measurement periods in use (see RFC6776 section 4.2).
This Metrics Block relies on the measurement period in the This Metrics Block relies on the measurement period in the
Measurement Information block indicating the span of the report. Measurement Information block indicating the span of the report.
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