draft-ietf-xrblock-rtcp-xr-post-repair-loss-count-01.txt   draft-ietf-xrblock-rtcp-xr-post-repair-loss-count-02.txt 
INTERNET-DRAFT R. Huang INTERNET-DRAFT R. Huang
Intended Status: Standard Huawei Intended Status: Standard Huawei
Expires: August 17, 2014 V. Singh Expires: September 4, 2014 V. Singh
Aalto University Aalto University
February 13, 2014 March 3, 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-01 draft-ietf-xrblock-rtcp-xr-post-repair-loss-count-02
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
skipping to change at page 4, line 11 skipping to change at page 4, line 11
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",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [RFC2119]. document are to be interpreted as described in RFC 2119 [RFC2119].
primary source RTP packet: the original RTP packet sent from the RTP primary source RTP packet: The original RTP packet sent from the RTP
sender for the first time. A primary source RTP packet may be lost sender for the first time. A lost primary source RTP packet may be
when transporting. The lost one can be repaired by mechanisms like repaired by some other RTP packets used in repair mechanisms like FEC
FEC or retransmission. or retransmission.
3 Post-Repair Loss Count Metrics Report Block 3 Post-Repair Loss Count Metrics Report Block
This block reports the number of packets lost after applying repair This block reports the number of packets lost after applying repair
mechanisms to complement the RTCP XR metrics defined in [RFC5725]. mechanisms to complement the RTCP XR metrics defined in [RFC5725].
This packet may be stacked with other RTCP packets to form compound This packet may be stacked with other RTCP packets to form compound
RTCP packets and share the average reporting interval calculated by RTCP packets and share the average reporting interval calculated by
the RTCP method described in [RFC3550]. These metrics defined in this the RTCP method described in [RFC3550]. These metrics defined in this
report block are all interval metrics and the measurement of them is report block are all interval metrics with an explicit sequence
made at the receiving end of the RTP stream. number range to indicate the measurement timing and the measurement
of them is made at the RTP receiver.
The post-repair loss count metrics report block has the following The post-repair loss count metrics report block has the following
format: format:
0 1 2 3 4 0 1 2 3 4
0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| BT=PRLR | Reserved | block length = 4 | | BT=PRLR | Reserved | block length = 4 |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| SSRC of Source | | SSRC of Source |
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