RTCP XR Report Block for One Way Delay metric Reporting
draft-wu-xrblock-rtcp-xr-one-way-delay-00

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Audio/Video Transport Working Group                       R. Brandenburg
Internet-Draft                                                       TNO
Intended status: Standards Track                                K. Gross
Expires: July 8, 2012                                       AVA Networks
                                                                   Q. Wu
                                                                  Huawei
                                                              F. Boronat
                                                             M. Montagud
                                              Universidad Politecnica de
                                                                Valencia
                                                         January 5, 2012

        RTCP XR Report Block for One Way Delay metric Reporting
             draft-wu-xrblock-rtcp-xr-one-way-delay-00.txt

Abstract

   This document defines an RTCP XR Report Block that allows the
   reporting of One Way Delay metrics for use in a range of RTP
   applications.

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   carefully, as they describe your rights and restrictions with respect
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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1.  Packet One Way Delay Metrics Block . . . . . . . . . . . .  3
     1.2.  RTCP and RTCP XR Reports . . . . . . . . . . . . . . . . .  3
     1.3.  Performance Metrics Framework  . . . . . . . . . . . . . .  3
     1.4.  Applicability  . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  5
     2.1.  Standards Language . . . . . . . . . . . . . . . . . . . .  5
   3.  One Way Delay Block  . . . . . . . . . . . . . . . . . . . . .  6
     3.1.  Report Block Structure . . . . . . . . . . . . . . . . . .  6
     3.2.  Definition of Fields in One Way Delay Metrics Report
           Block  . . . . . . . . . . . . . . . . . . . . . . . . . .  6
   4.  Clock synchronization for one way delay metrics  . . . . . . .  9
   5.  SDP Signaling  . . . . . . . . . . . . . . . . . . . . . . . . 10
   6.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 11
     6.1.  New RTCP XR Block Type value . . . . . . . . . . . . . . . 11
     6.2.  New RTCP XR SDP Parameter  . . . . . . . . . . . . . . . . 11
     6.3.  Contact information for registrations  . . . . . . . . . . 11
   7.  Security Considerations  . . . . . . . . . . . . . . . . . . . 12
   8.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 13
     8.1.  Normative References . . . . . . . . . . . . . . . . . . . 13
     8.2.  Informative References . . . . . . . . . . . . . . . . . . 13
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 14

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1.  Introduction

1.1.  Packet One Way Delay Metrics Block

   [I-D.ietf-xrblock-rtcp-xr-delay] defines the new block type
   supporting the reporting of the mean, minimum and maximum values of
   the network round-trip delay between media source(source) and media
   receiver(destination).  However none of these metrics allow a
   receiver to report one way delay from source to destination or from
   destination to source.  As described in [RFC2679], the path from a
   source to a destination may be different than the path from the
   destination back to the source.  Even when the two paths are
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