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Evaluation of a new Scheduling Scheme for VoIP with Mobility in 3G LTE

Authors:
Richard Musabe
Hadi Larijani

Keywords: LTE, Mobility, Scheduling Schemes, VoIP

Abstract:
3G long term evolution is an all internet protocol based network and one of its main aims is to improve mobile multimedia services. This is achieved through streamlining the system for packet services. This leads to improvements in the form of higher bit rates, lower latencies, and a variety of service offerings. However, more challenging technical difficulties may be expected to arise when voice traffic flows over a long term evolution network. There is a major change in the way voice is transmitted in long term evolution network, in that it is transmitted in packets instead of through circuits. The fact that long term evolution is designed to support mobility, it is of great importance to analyse the effect of mobility to our new scheduling scheme for voice over internet protocol in long term evolution systems. In this paper, we analyse the effect of mobility to our proposed scheduling algorithm, voice over internet protocol optimisation scheduling algorithm while taking into account the quality of service parameters of voice traffic in long term evolution network. Using long term evolution-SIM simulation software, we evaluate the performance of our proposed scheduling algorithm and compare it with other scheduling algorithms in the literature such as; exponential proportional fair and proportional fair scheduling algorithms. Simulation results showed that mobility had a significant impact on the quality of service for voice traffic on all the three scheduling algorithms. Our proposed algorithm provided the best quality of service for voice traffic compared to the other two scheduling algorithms based on the packet loss ratio, delay, and throughput metrics.

Pages: 7 to 13

Copyright: Copyright (c) IARIA, 2012

Publication date: April 29, 2012

Published in: conference

ISSN: 2308-4022

ISBN: 978-1-61208-192-2

Location: Chamonix, France

Dates: from April 29, 2012 to May 4, 2012