The Quality for Service Protocol
draft-aranda-dispatch-q4s-10

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Internet Draft

Intended status: Informational                       J.J. Garcia Aranda
Expires: January 2020                                             Nokia
                                                             M. Cortes
                                                          J. Salvachua
                                            Univ. Politecnica de Madrid
                                                            M. Narganes
                                                               Tecnalia
                                                  I. Martinez Sarriegui
                                                           Optiva Media

                                                           July 5, 2019

                    The Quality for Service Protocol
                    draft-aranda-dispatch-q4s-10.txt

Status of this Memo

   This Internet-Draft is submitted to IETF in full conformance with
   the provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on January 5, 2020.

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   Copyright (c) 2018 IETF Trust and the persons identified as the
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   This document is subject to BCP 78 and the IETF Trust's Legal
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   carefully, as they describe your rights and restrictions with
   respect to this document.

Abstract

   This memo describes an application level protocol for the
   communication of end-to-end QoS compliance information based on
   the   Hypertext Transfer Protocol (HTTP) and the Session
   Description Protocol (SDP).  The Quality for Service Protocol
   (Q4S) provides a mechanism to negotiate and monitor latency,
   jitter, bandwidth, and packet, and to alert whenever one of the
   negotiated conditions is violated.

   Implementation details on the actions to be triggered upon
   reception/detection of QoS alerts exchanged by the protocol are
   out of scope of this document, it is application dependent (e.g.,
   act to increase quality or reduce bit-rate) or network dependent
   (e.g., change connection's quality profile).

   This protocol specification is the product of research conducted
   over a number of years, and is presented here as a permanent
   record and to offer a foundation for future similar work.  It does
   not represent a standard protocol and does not have IETF
   consensus.

Table of Contents

   1  Introduction...................................................5
      1.1   Scope....................................................6
      1.2   Motivation...............................................7
      1.3   Summary of Features......................................8
      1.4   Differences with OWAMP/TWAMP.............................9
   2  Terminology....................................................9
   3  Overview of Operation.........................................10
   4  Q4S Messages..................................................21
      4.1   Requests................................................21
      4.2   Responses...............................................22
      4.3   Header Fields...........................................23
         4.3.1    Common Q4S Header Fields..........................23
         4.3.2    Specific Q4S Request Header Fields................24
         4.3.3    Specific Q4S Response Header Fields...............25
      4.4   Bodies..................................................26

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         4.4.1    Encoding..........................................26
   5  Q4S Method Definitions........................................26
      5.1   BEGIN...................................................27
      5.2   READY...................................................27
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