Evaluation Test Cases for Interactive Real-Time Media over Cellular Networks
draft-sarker-rmcat-cellular-eval-test-cases-01

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Network Working Group                                          Z. Sarker
Internet-Draft                                              I. Johansson
Intended status: Informational                               Ericsson AB
Expires: December 29, 2014                                 June 27, 2014

  Evaluation Test Cases for Interactive Real-Time Media over Cellular
                                Networks
             draft-sarker-rmcat-cellular-eval-test-cases-01

Abstract

   It is evident that to ensure seamless and robust user experience
   across all type of access networks multimedia communication suits
   should adapt to the changing network conditions.  There is an ongoing
   effort in IETF RMCAT working group to standardize rate adaptive
   algorithm(s) to be used in the real-time interactive communication.
   In this document test cases are described to evaluate the
   performances of the proposed endpoint adaptation solutions in a
   cellular network such as LTE network.  It is aimed that the proposed
   solutions should be evaluated using the test cases defines in this
   document to select most optimal solutions.

Status of This Memo

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   This Internet-Draft will expire on December 29, 2014.

Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of

Sarker & Johansson      Expires December 29, 2014               [Page 1]
Internet-Draft          RMCAT Cellular Test Cases              June 2014

   publication of this document.  Please review these documents
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminologies . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Cellular Network Specific Test Cases  . . . . . . . . . . . .   4
     3.1.  Varying Network Load  . . . . . . . . . . . . . . . . . .   5
       3.1.1.  Network Connection  . . . . . . . . . . . . . . . . .   5
       3.1.2.  Simulation Setup  . . . . . . . . . . . . . . . . . .   6
     3.2.  Bad Radio Coverage  . . . . . . . . . . . . . . . . . . .   8
       3.2.1.  Network connection  . . . . . . . . . . . . . . . . .   8
       3.2.2.  Simulation Setup  . . . . . . . . . . . . . . . . . .   8
   4.  Desired Evaluation Metrics  . . . . . . . . . . . . . . . . .   9
   5.  Conclusion  . . . . . . . . . . . . . . . . . . . . . . . . .   9
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   9
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  10
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   Cellular networks are an integral part of the Internet.  Mobile
   devices connected to the cellular networks produces huge amount of
   media traffic in the Internet.  It is important to evaluate the
   performance of the proposed RMCAT candidates in the cellular network.

   A cellular environment is more complicated than a wireline ditto
   since it seeks to provide services in the context of variable
   available bandwidth, location dependencies and user mobilities at
   different speeds.  In a cellular network the user may reach the cell
   edge which may lead to a significant amount of retransmissions to
   deliver the data from the base station to the destination and vice
   versa.  These network links or radio links will often act as a
   bottleneck for the rest of the network which will eventually lead to
   excessive delays or packet drops.  An efficient retransmission or
   link adaptation mechanism can reduce the packet loss probability but
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