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The Impact of Control Information Prioritization on QoS Performance Metrics

Authors:
Jasmina Barakovic
Sabina Barakovic
Himzo Bajric

Keywords: control information prioritization; QoS; RTCP; RTP

Abstract:
Real-time protocols such as Real-time Transport Protocol (RTP) and its companion protocol Real-time Transport Control Protocol (RTCP) are the solution for customers who have progressively come to desire real-time services. The characteristics of RTP and RTCP packets differ since they carry different content types, i.e., real-time data and control data, respectively. The standard approach assumes that RTP real-time data packets and RTCP control packets are classified into the same media-oriented service class. That might impact the Quality of Service (QoS) for real-time services with regard to network status. Therefore, this paper proposes an idea of QoS enhancement by efficiently transmitting user control information and establishing the proper transmission rate dynamically in dependence upon the status of a network. To accomplish this task, RTCP control packets are classified the Signaling service class, which should be given the absolute preferential treatment over all other User service classes. Results obtained with NCTUns simulator and emulator show a significant impact of control information prioritization on QoS performance metrics and indicate that this approach could be a new starting point for research activities in the future.

Pages: 60 to 65

Copyright: Copyright (c) IARIA, 2011

Publication date: April 17, 2011

Published in: conference

ISSN: 2308-4022

ISBN: 978-1-61208-126-7

Location: Budapest, Hungary

Dates: from April 17, 2011 to April 22, 2011