draft-ietf-xrblock-rtcp-xr-post-repair-loss-count-04.txt   draft-ietf-xrblock-rtcp-xr-post-repair-loss-count-05.txt 
INTERNET-DRAFT R. Huang INTERNET-DRAFT R. Huang
Intended Status: Standard Huawei Intended Status: Standard Huawei
Expires: December 25, 2014 V. Singh Expires: December 26, 2014 V. Singh
Aalto University Aalto University
June 23, 2014 June 24, 2014
RTP Control Protocol (RTCP) Extended Report (XR) for Post-Repair RTP Control Protocol (RTCP) Extended Report (XR) for Post-Repair
Loss Count Metrics Loss Count Metrics
draft-ietf-xrblock-rtcp-xr-post-repair-loss-count-04 draft-ietf-xrblock-rtcp-xr-post-repair-loss-count-05
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 reporting of post-repair loss count metrics (XR) Block that allows reporting of post-repair loss count metrics
for a range of RTP applications. for a range of RTP applications.
Status of this Memo Status of this Memo
This Internet-Draft is submitted to IETF in full conformance with the This Internet-Draft is submitted to IETF in full conformance with the
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Table of Contents Table of Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 Post-Repair Loss Count Metrics Report Block . . . . . . . . . . 4 3 Post-Repair Loss Count Metrics Report Block . . . . . . . . . . 4
4 SDP Signaling . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 SDP Signaling . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.1 SDP rtcp-xr-attrib Attribute Extension . . . . . . . . . . 6 4.1 SDP rtcp-xr-attrib Attribute Extension . . . . . . . . . . 6
4.2 Offer/Answer Usage . . . . . . . . . . . . . . . . . . . . 6 4.2 Offer/Answer Usage . . . . . . . . . . . . . . . . . . . . 6
5 Security Considerations . . . . . . . . . . . . . . . . . . . . 6 5 Security Considerations . . . . . . . . . . . . . . . . . . . . 6
6 IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 6 6 IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 6
6.1 New RTCP XR Block Type value . . . . . . . . . . . . . . . 7 6.1 New RTCP XR Block Type value . . . . . . . . . . . . . . . 6
6.2 New RTCP XR SDP Parameter . . . . . . . . . . . . . . . . . 7 6.2 New RTCP XR SDP Parameter . . . . . . . . . . . . . . . . . 7
6.3 Contact Information for registrations . . . . . . . . . . . 7 6.3 Contact Information for registrations . . . . . . . . . . . 7
7 Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . 7 7 Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . 7
8 References . . . . . . . . . . . . . . . . . . . . . . . . . . 7 8 References . . . . . . . . . . . . . . . . . . . . . . . . . . 7
8.1 Normative References . . . . . . . . . . . . . . . . . . . 7 8.1 Normative References . . . . . . . . . . . . . . . . . . . 7
8.2 Informative References . . . . . . . . . . . . . . . . . . 8 8.2 Informative References . . . . . . . . . . . . . . . . . . 8
Appendix A. Metrics Represented Using the Template from RFC 6390 . 8 Appendix A. Metrics Represented Using the Template from RFC 6390 . 8
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 9 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 9
1 Introduction 1 Introduction
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[RFC3611] and complement the report block defined in [RFC5725] for [RFC3611] and complement the report block defined in [RFC5725] for
use in a range of RTP application. This new block type reports the use in a range of RTP application. This new block type reports the
number of primary source RTP packets that are still lost after number of primary source RTP packets that are still lost after
applying one or more loss repair mechanisms. The metrics defined in applying one or more loss repair mechanisms. The metrics defined in
this document are packet level rather than slice/picture level, which this document are packet level rather than slice/picture level, which
means the partial recovery of a packet will not be regarded as a means the partial recovery of a packet will not be regarded as a
repaired packet. In addition, another metric, repaired loss count, repaired packet. In addition, another metric, repaired loss count,
is also introduced in this report block for calculating the pre- is also introduced in this report block for calculating the pre-
repair loss count during the this range, so that the RTP sender or a repair loss count during the this range, so that the RTP sender or a
third-party entity is able to evaluate the effectiveness of the third-party entity is able to evaluate the effectiveness of the
repair methods used by the system. Note that the metrics in this repair methods used by the system.
report block MUST NOT be directly compared with the pre-repair loss
metric of [RFC3550].
The metrics defined in this document belongs to the class of The metrics defined in this document belongs to the class of
transport-related metrics defined in [RFC6792]. And it is in transport-related metrics defined in [RFC6792]. And it is in
accordance with the guidelines in [RFC6390] and [RFC6792]. These accordance with the guidelines in [RFC6390] and [RFC6792]. These
metrics are applicable to any RTP application, especially those that metrics are applicable to any RTP application, especially those that
use loss repair mechanisms. use loss repair mechanisms.
2 Terminology 2 Terminology
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
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