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Impact of Scheduling and Buffer Sizing on TCP Performance over IMT-Advanced

Authors:
Kunimasa Kakuda
Masato Tsuru

Keywords: IMT-Advanced, TCP throughput, MaxCIR scheduler, Proportional Fair scheduler

Abstract:
IMT-Advanced is gaining much attention as the next-generation mobile communication technology. In this study, we evaluate the TCP throughput performance of mobile users competing on an IMT-Advanced shared downlink via a network simulation by using realistic environmental parameters. Our focus is on evaluating the impact of two basic types of timefrequency scheduling in which not only a time-varying wireless condition is used but also a frequency-block-dependent wireless condition of each user is exploited using various buffer sizes at radio base stations and various user moving speeds. We investigated the subtle tension between the scheduling, buffer sizing, and user moving speed for the TCP throughput. Our results imply that more TCP awareness is necessary for sharing the large bandwidth of IMT-Advanced downlinks more efficiently.

Pages: 32 to 37

Copyright: Copyright (c) IARIA, 2011

Publication date: March 20, 2011

Published in: conference

ISSN: 2308-4030

ISBN: 978-1-61208-123-6

Location: St. Maarten, The Netherlands Antilles

Dates: from March 20, 2011 to March 25, 2011