draft-ietf-xrblock-rtcp-xr-meas-identity-03.txt   draft-ietf-xrblock-rtcp-xr-meas-identity-04.txt 
Audio/Video Transport Working Group G. Hunt Audio/Video Transport Working Group G. Hunt
Internet-Draft Unaffiliated Internet-Draft Unaffiliated
Intended status: Standards Track A. Clark Intended status: Standards Track A. Clark
Expires: September 30, 2012 Telchemy Expires: October 12, 2012 Telchemy
Q. Wu Q. Wu
Huawei Huawei
March 29, 2012 April 10, 2012
Measurement Identity and information Reporting using SDES item and XR Measurement Identity and information Reporting using SDES item and XR
Block Block
draft-ietf-xrblock-rtcp-xr-meas-identity-03.txt draft-ietf-xrblock-rtcp-xr-meas-identity-04.txt
Abstract Abstract
This document defines an RTCP SDES item and an RTCP XR Block carrying This document defines an RTCP SDES item and an RTCP XR Block carrying
parameters that identify and describe a measurement period, to which parameters that identify and describe a measurement period, to which
one or more other RTCP XR Report Blocks may refer. one or more other RTCP XR Report Blocks may refer.
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 September 30, 2012. This Internet-Draft will expire on October 12, 2012.
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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5.3. Contact information for registrations . . . . . . . . . . 9 5.3. Contact information for registrations . . . . . . . . . . 9
6. Security Considerations . . . . . . . . . . . . . . . . . . . 10 6. Security Considerations . . . . . . . . . . . . . . . . . . . 10
7. References . . . . . . . . . . . . . . . . . . . . . . . . . . 11 7. References . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.1. Normative References . . . . . . . . . . . . . . . . . . . 11 7.1. Normative References . . . . . . . . . . . . . . . . . . . 11
7.2. Informative References . . . . . . . . . . . . . . . . . . 11 7.2. Informative References . . . . . . . . . . . . . . . . . . 11
Appendix A. Change Log . . . . . . . . . . . . . . . . . . . . . 12 Appendix A. Change Log . . . . . . . . . . . . . . . . . . . . . 12
A.1. draft-ietf-xrblock-xr-rtcp-meas-identity-00 . . . . . . . 12 A.1. draft-ietf-xrblock-xr-rtcp-meas-identity-00 . . . . . . . 12
A.2. draft-ietf-xrblock-xr-rtcp-meas-identity-01 . . . . . . . 12 A.2. draft-ietf-xrblock-xr-rtcp-meas-identity-01 . . . . . . . 12
A.3. draft-ietf-xrblock-xr-rtcp-meas-identity-02 . . . . . . . 12 A.3. draft-ietf-xrblock-xr-rtcp-meas-identity-02 . . . . . . . 12
A.4. draft-ietf-xrblock-xr-rtcp-meas-identity-03 . . . . . . . 13 A.4. draft-ietf-xrblock-xr-rtcp-meas-identity-03 . . . . . . . 13
A.5. draft-ietf-xrblock-xr-rtcp-meas-identity-04 . . . . . . . 13
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 14 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 14
1. Introduction 1. Introduction
This draft defines one new RTCP SDES item and one new XR Report Block This draft defines one new RTCP SDES item and one new XR Report Block
carrying parameters that identify and describe a measurement period, carrying parameters that identify and describe a measurement period,
to which one or more other RTCP XR Report Blocks may refer. to which one or more other RTCP XR Report Blocks may refer.
The SDES item provides a field for an application specific auxiliary The SDES item provides a field for an application specific auxiliary
identifier. This identifier may be used to correlate data in XR identifier. This identifier may be used to correlate data in XR
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| BT=NMI | Reserved | block length = 6 | | BT=NMI | Reserved | block length = 6 |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| SSRC of stream source | | SSRC of stream source |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Reserved | first sequence number | | Reserved | first sequence number |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| extended first sequence number of interval | | extended first sequence number of interval |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| extended last sequence number | | extended last sequence number |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Measurement Duration (Cumulative) (ms) | | Measurement Duration (Cumulative) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Measurement Duration (Interval) (ms) | | Measurement Duration (Interval) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Report Block Structure Report Block Structure
4.2. Definition of Fields in Measurement Information Report Block 4.2. Definition of Fields in Measurement Information Report Block
Block type (BT): 8 bits Block type (BT): 8 bits
A Measurement Information Report Block is identified by the A Measurement Information Report Block is identified by the
constant NMI. constant NMI.
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Extended first sequence number of interval: 32 bits Extended first sequence number of interval: 32 bits
The extended RTP sequence number of the first received RTP packet The extended RTP sequence number of the first received RTP packet
of the current measurement interval. of the current measurement interval.
Extended last sequence number: 32 bits Extended last sequence number: 32 bits
The extended RTP sequence number of the last received RTP packet The extended RTP sequence number of the last received RTP packet
which contributed to this measurement. which contributed to this measurement.
Measurement Duration (Cumulative) (ms): 32 bits Measurement Duration (Cumulative) : 32 bits
The duration in ms of the reporting interval applicable to The duration, expressed in units of 1/65536 seconds, of the
Cumulative reports which use this Measurement Information block. reporting interval applicable to Cumulative reports which use this
The value of this field can be calculated by the receiver of the Measurement Information block. The value of this field can be
RTP media stream, for example, based on received RTP media packets calculated by the receiver of the RTP media stream, for example,
or using RTCP method described in [RFC3550]. based on received RTP media packets or using RTCP method described
in [RFC3550].
Measurement Duration (Interval) (ms): 32 bits Measurement Duration (Interval) : 32 bits
The duration in ms of the reporting interval applicable to The duration, expressed in units of 1/65536 seconds, of the
Interval reports which use this Measurement Information block. reporting interval applicable to Interval reports which use this
The value of this field can be calculated by the receiver of the Measurement Information block . The value of this field can be
RTP media stream, for example, based on received RTP media packets calculated by the receiver of the RTP media stream, for example,
or using RTCP method described in [RFC3550]. based on received RTP media packets or using RTCP method described
in [RFC3550].
5. IANA Considerations 5. IANA Considerations
New SDES types for RTCP SDES are subject to IANA registration. For New SDES types for RTCP SDES are subject to IANA registration. For
general guidelines on IANA considerations for RTCP SDES, refer to general guidelines on IANA considerations for RTCP SDES, refer to
[RFC3550]. [RFC3550].
5.1. New RTCP SDES Type value 5.1. New RTCP SDES Type value
This document assigns one additional SDES type in the IANA "RTCP XR This document assigns one additional SDES type in the IANA "RTCP XR
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o Other Editorial changes. o Other Editorial changes.
A.4. draft-ietf-xrblock-xr-rtcp-meas-identity-03 A.4. draft-ietf-xrblock-xr-rtcp-meas-identity-03
The following are the major changes to The following are the major changes to
draft-ietf-xrblock-xr-rtcp-meas-identity-02: draft-ietf-xrblock-xr-rtcp-meas-identity-02:
o The Editorial changes. o The Editorial changes.
A.5. draft-ietf-xrblock-xr-rtcp-meas-identity-04
The following are the major changes to
draft-ietf-xrblock-xr-rtcp-meas-identity-03:
o Change unit of measurement duration from ms to 1/65536 seconds.
Authors' Addresses Authors' Addresses
Geoff Hunt Geoff Hunt
Unaffiliated Unaffiliated
Email: r.geoff.hunt@gmail.com Email: r.geoff.hunt@gmail.com
Alan Clark Alan Clark
Telchemy Incorporated Telchemy Incorporated
2905 Premiere Parkway, Suite 280 2905 Premiere Parkway, Suite 280
 End of changes. 12 change blocks. 
18 lines changed or deleted 28 lines changed or added

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