draft-ietf-xrblock-rtcp-xr-burst-gap-discard-07.txt   draft-ietf-xrblock-rtcp-xr-burst-gap-discard-08.txt 
Audio/Video Transport Working Group A. Clark Audio/Video Transport Working Group A. Clark
Internet-Draft Telchemy Internet-Draft Telchemy
Intended status: Standards Track R. Huang Intended status: Standards Track R. Huang
Expires: June 3, 2013 Q. Wu, Ed. Expires: June 8, 2013 Q. Wu, Ed.
Huawei Huawei
November 30, 2012 December 5, 2012
RTP Control Protocol(RTCP) Extended Report (XR) Block for Burst/Gap RTP Control Protocol(RTCP) Extended Report (XR) Block for Burst/Gap
Discard metric Reporting Discard metric Reporting
draft-ietf-xrblock-rtcp-xr-burst-gap-discard-07.txt draft-ietf-xrblock-rtcp-xr-burst-gap-discard-08.txt
Abstract Abstract
This document defines an RTP Control Protocol(RTCP) Extended Report This document defines an RTP Control Protocol(RTCP) Extended Report
(XR) Block that allows the reporting of Burst and Gap Discard metrics (XR) Block that allows the reporting of Burst and Gap Discard metrics
for use in a range of RTP applications. for use in a range of RTP applications.
Status of this Memo Status of this Memo
This Internet-Draft is submitted in full conformance with the This Internet-Draft is submitted in full conformance with the
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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 June 3, 2013. This Internet-Draft will expire on June 8, 2013.
Copyright Notice Copyright Notice
Copyright (c) 2012 IETF Trust and the persons identified as the Copyright (c) 2012 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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6.1. New RTCP XR Block Type value . . . . . . . . . . . . . . . 11 6.1. New RTCP XR Block Type value . . . . . . . . . . . . . . . 11
6.2. New RTCP XR SDP Parameter . . . . . . . . . . . . . . . . 11 6.2. New RTCP XR SDP Parameter . . . . . . . . . . . . . . . . 11
6.3. Contact information for registrations . . . . . . . . . . 11 6.3. Contact information for registrations . . . . . . . . . . 11
7. Security Considerations . . . . . . . . . . . . . . . . . . . 12 7. Security Considerations . . . . . . . . . . . . . . . . . . . 12
8. Contributors . . . . . . . . . . . . . . . . . . . . . . . . . 13 8. Contributors . . . . . . . . . . . . . . . . . . . . . . . . . 13
9. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 14 9. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 14
10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 15 10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 15
10.1. Normative References . . . . . . . . . . . . . . . . . . . 15 10.1. Normative References . . . . . . . . . . . . . . . . . . . 15
10.2. Informative References . . . . . . . . . . . . . . . . . . 15 10.2. Informative References . . . . . . . . . . . . . . . . . . 15
Appendix A. Change Log . . . . . . . . . . . . . . . . . . . . . 16 Appendix A. Change Log . . . . . . . . . . . . . . . . . . . . . 16
A.1. draft-ietf-xrblock-rtcp-xr-burst-gap-discard-07 . . . . . 16 A.1. draft-ietf-xrblock-rtcp-xr-burst-gap-discard-08 . . . . . 16
A.2. draft-ietf-xrblock-rtcp-xr-burst-gap-discard-06 . . . . . 16 A.2. draft-ietf-xrblock-rtcp-xr-burst-gap-discard-06 . . . . . 16
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 17 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 17
1. Introduction 1. Introduction
1.1. Burst and Gap Discard Report Block 1.1. Burst and Gap Discard Report Block
This document defines a new block type to augment those defined in 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 [RFC3611] for use in a range of RTP applications. The new block type
supports the reporting of the proportion of packets discarded by the supports the reporting of the proportion of packets discarded by the
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of RTCP XR [RFC3611]. RTCP XR views a RTP stream as being divided of RTCP XR [RFC3611]. RTCP XR views a RTP stream as being divided
into bursts, which are periods during which the discard rate is into bursts, which are periods during which the discard rate is
high enough to cause noticeable quality degradation (generally high enough to cause noticeable quality degradation (generally
over 5 percent discard rate), and gaps, which are periods during over 5 percent discard rate), and gaps, which are periods during
which discarded packets are infrequent and hence quality is which discarded packets are infrequent and hence quality is
generally acceptable. generally acceptable.
3. Burst/Gap Discard Block 3. Burst/Gap Discard Block
Metrics in this block report on Burst/Gap Discard in the stream Metrics in this block report on Burst/Gap Discard in the stream
arriving at the RTP system. arriving at the RTP system. The measurement of these metrics are
made at the receiving end of the RTP stream. Instances of this
Metrics Block refer by Synchronization source (SSRC) to the separate
auxiliary Measurement Information block [RFC6776] which contains
measurement periods (see RFC6776 section 4.2). This metric block
relies on the measurement period in the Measurement Information block
indicating the span of the report and SHOULD be sent in the same
compound RTCP packet as the measurement information block. If the
measurement period is not received in the same compound RTCP packet
as this metric block, this metric block MUST be discarded.
3.1. Report Block Structure 3.1. Report Block Structure
Burst/Gap Discard metrics block Burst/Gap Discard metrics block
0 1 2 3 0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| BT=NBGD | I | resv. | block length = 3 | | BT=NBGD | I | resv. | block length = 3 |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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parameter, refer to section 5.2 of [RFC3611]. parameter, refer to section 5.2 of [RFC3611].
6. IANA Considerations 6. IANA Considerations
New block types for RTCP XR are subject to IANA registration. For New block types for RTCP XR are subject to IANA registration. For
general guidelines on IANA considerations for RTCP XR, refer to general guidelines on IANA considerations for RTCP XR, refer to
[RFC3611]. [RFC3611].
6.1. New RTCP XR Block Type value 6.1. New RTCP XR Block Type value
This document assigns the block type value NBGD in the IANA "RTCP XR This document assigns the block type value NBGD in the IANA " RTP
Block Type Registry" to the "Burst/Gap Discard Metrics Block". Control Protocol Extended Reports (RTCP XR) Block Type Registry " to
the "Burst/Gap Discard Metrics Block".
[Note to RFC Editor: please replace NBGD with the IANA provided RTCP [Note to RFC Editor: please replace NBGD with the IANA provided RTCP
XR block type for this block.] XR block type for this block.]
6.2. New RTCP XR SDP Parameter 6.2. New RTCP XR SDP Parameter
This document also registers a new parameter "brst-gap-dscrd" in the This document also registers a new parameter "brst-gap-dscrd" in the
"RTCP XR SDP Parameters Registry". "RTP Control Protocol Extended Reports (RTCP XR) Session Description
Protocol (SDP) Parameters Registry".
6.3. Contact information for registrations 6.3. Contact information for registrations
The contact information for the registrations is: The contact information for the registrations is:
Qin Wu (sunseawq@huawei.com) Qin Wu (sunseawq@huawei.com)
101 Software Avenue, Yuhua District 101 Software Avenue, Yuhua District
Nanjing, Jiangsu 210012 Nanjing, Jiangsu 210012
China China
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[RFC4566] Handley, M., Jacobson, V., and C. Perkins, "SDP: Session [RFC4566] Handley, M., Jacobson, V., and C. Perkins, "SDP: Session
Description Protocol", July 2006. Description Protocol", July 2006.
[RFC5725] Begen, A., Hsu, D., and M. Lague, "Post-Repair Loss RLE [RFC5725] Begen, A., Hsu, D., and M. Lague, "Post-Repair Loss RLE
Report Block Type for RTP Control Protocol (RTCP) Extended Report Block Type for RTP Control Protocol (RTCP) Extended
Reports (XRs)", RFC 5725, February 2020. Reports (XRs)", RFC 5725, February 2020.
10.2. Informative References 10.2. Informative References
[DISCARD] Hunt, G., "RTCP XR Report Block for Discard Count metric [DISCARD] Wu, Q., "RTCP XR Report Block for Discard Count metric
Reporting", ID draft-ietf-xrblock-rtcp-xr-discard-06, Reporting", ID draft-ietf-xrblock-rtcp-xr-discard-09,
October 2012. October 2012.
[PSES] "URL", http://www.its.bldrdoc.gov/projects/devglossary/ [PSES] "URL", http://www.its.bldrdoc.gov/projects/devglossary/
_severely_errored_second.html, October 2011. _severely_errored_second.html, October 2011.
[RFC6390] Clark, A. and B. Claise, "Framework for Performance Metric [RFC6390] Clark, A. and B. Claise, "Framework for Performance Metric
Development", RFC 6390, October 2011. Development", RFC 6390, October 2011.
[RFC6776] Wu, Q., "Measurement Identity and information Reporting [RFC6776] Wu, Q., "Measurement Identity and information Reporting
using SDES item and XR Block", RFC 6776, October 2012. using SDES item and XR Block", RFC 6776, October 2012.
[RFC6792] Hunt, G., "Monitoring Architectures for RTP", RFC 6792, [RFC6792] Hunt, G., "Monitoring Architectures for RTP", RFC 6792,
November 2012. November 2012.
[SUMSTAT] Zorn, G., "RTCP XR for Summary Statistics Metrics [SUMSTAT] Zorn, G., "RTCP XR for Summary Statistics Metrics
Reporting", ID draft-zorn-xrblock-rtcp-xr-al-stat-06, Reporting", ID draft-ietf-xrblock-rtcp-xr-summary-stat-03,
July 2012. November 2012.
Appendix A. Change Log Appendix A. Change Log
Note to the RFC-Editor: please remove this section prior to Note to the RFC-Editor: please remove this section prior to
publication as an RFC. publication as an RFC.
A.1. draft-ietf-xrblock-rtcp-xr-burst-gap-discard-07 A.1. draft-ietf-xrblock-rtcp-xr-burst-gap-discard-08
The following are the major changes compared to previous version: The following are the major changes compared to previous version:
o SDP update based on SDP Directorate Review. o SDP update based on SDP Directorate Review.
o Add some texts to get consistent with RFC6798 and Delay draft.
A.2. draft-ietf-xrblock-rtcp-xr-burst-gap-discard-06 A.2. draft-ietf-xrblock-rtcp-xr-burst-gap-discard-06
The following are the major changes compared to previous version: The following are the major changes compared to previous version:
o Outdated reference update. o Outdated reference update.
o Editorial changes based on comments that applied to PDV and Delay o Editorial changes based on comments that applied to PDV and Delay
drafts. drafts.
Authors' Addresses Authors' Addresses
 End of changes. 12 change blocks. 
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