Home // ICNS 2012, The Eighth International Conference on Networking and Services // View article
Authors:
Yuuki Ise
Go Hasegawa
Yoshiaki Taniguchi
Hirotaka Nakano
Keywords: IEEE 802.16j; WiMAX; relay network; obstacle; radio wave obstruction.
Abstract:
In IEEE 802.16j networks using a time division multiple access protocol, radio wave interference between links must be taken into account when time slots are assigned to the links. The protocol model, which defines the transmission and interference ranges as circles, has often been utilized in related studies for determining the interference between links. However, previous studies have not considered the presence of obstacles, which can affect radio wave propagation between wireless links and consequently network performance. In this paper, we investigate the performance of IEEE 802.16j networks considering the effects of obstacles. First we define an obstacle model where radio wave propagation is obstructed by the obstacles, after which we evaluate network performance by simulation experiments based on this model. The detailed simulation results reveal that the deployment of additional nodes improves the service ratio more effectively than an increase of the transmission range of nodes. Additionally, we present a method for estimating the performance of IEEE 802.16j networks on basis of regression analysis. By evaluating the accuracy of the performed analysis, we find that the relative error in the service ratio for 95% of the results is within 0.1 and the relative error in the power-to-throughput ratio for 90% of the results is within 0.2.
Pages: 63 to 68
Copyright: Copyright (c) IARIA, 2012
Publication date: March 25, 2012
Published in: conference
ISSN: 2308-4006
ISBN: 978-1-61208-186-1
Location: St. Maarten, The Netherlands Antilles
Dates: from March 25, 2012 to March 30, 2012