RTP Control Protocol (RTCP) Extended Report (XR) Block for De-Jitter Buffer Metric Reporting
RFC 7005
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RFC - Proposed Standard
(September 2013; No errata)
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2015-10-14
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IETF
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(last changed 2013-05-17)
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RFC 7005 (Proposed Standard)
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RFC-Ed-Ack
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Internet Engineering Task Force (IETF) A. Clark
Request for Comments: 7005 Telchemy
Category: Standards Track V. Singh
ISSN: 2070-1721 Aalto University
Q. Wu
Huawei
September 2013
RTP Control Protocol (RTCP) Extended Report (XR) Block
for De-Jitter Buffer Metric Reporting
Abstract
This document defines an RTP Control Protocol (RTCP) Extended Report
(XR) block that allows the reporting of de-jitter buffer metrics for
a range of RTP applications.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc7005.
Copyright Notice
Copyright (c) 2013 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Clark, et al. Standards Track [Page 1]
RFC 7005 RTCP XR Jitter Buffer September 2013
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. De-Jitter Buffer Metrics Block . . . . . . . . . . . . . . 3
1.2. RTCP and RTCP Extended Reports . . . . . . . . . . . . . . 3
1.3. Performance Metrics Framework . . . . . . . . . . . . . . 3
1.4. Applicability . . . . . . . . . . . . . . . . . . . . . . 3
2. Standards Language . . . . . . . . . . . . . . . . . . . . . . 4
3. De-Jitter Buffer Operation . . . . . . . . . . . . . . . . . . 4
3.1. Idealized De-Jitter Buffer . . . . . . . . . . . . . . . . 4
3.2. Fixed De-Jitter Buffer . . . . . . . . . . . . . . . . . . 5
3.3. Adaptive De-Jitter Buffer . . . . . . . . . . . . . . . . 5
4. De-Jitter Buffer Metrics Block . . . . . . . . . . . . . . . . 6
4.1. Report Block Structure . . . . . . . . . . . . . . . . . . 6
4.2. Definition of Fields in De-Jitter Buffer Metrics Block . . 6
5. SDP Signaling . . . . . . . . . . . . . . . . . . . . . . . . 9
5.1. SDP rtcp-xr-attrib Attribute Extension . . . . . . . . . . 9
5.2. Offer/Answer Usage . . . . . . . . . . . . . . . . . . . . 9
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 9
6.1. New RTCP XR Block Type Value . . . . . . . . . . . . . . . 9
6.2. New RTCP XR SDP Parameter . . . . . . . . . . . . . . . . 10
6.3. Contact Information for Registrations . . . . . . . . . . 10
7. Security Considerations . . . . . . . . . . . . . . . . . . . 10
8. Contributors . . . . . . . . . . . . . . . . . . . . . . . . . 10
9. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 10
10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 10
10.1. Normative References . . . . . . . . . . . . . . . . . . . 10
10.2. Informative References . . . . . . . . . . . . . . . . . . 11
Appendix A. Metrics Represented Using the Template from
RFC 6390 . . . . . . . . . . . . . . . . . . . . . . 12
Clark, et al. Standards Track [Page 2]
RFC 7005 RTCP XR Jitter Buffer September 2013
1. Introduction
1.1. De-Jitter Buffer Metrics Block
This document defines a new block type to augment those defined in
[RFC3611] for use in a range of RTP applications.
The new block type provides information on de-jitter buffer
configuration and performance.
The metric belongs to the class of transport-related end-system
metrics defined in [RFC6792].
Instances of this metrics block refer by synchronization source
(SSRC) to the separate auxiliary Measurement Information Block
[RFC6776], which contains information such as the SSRC of the
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