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ThinkMind // AICT 2011, The Seventh Advanced International Conference on Telecommunications // View article aict_2011_1_20_10030


Time Slot Assignment Algorithms for Reducing Upstream Latency in IEEE 802.16j Networks

Authors:
Shimpei Tanaka
Go Hasegawa
Yoshiaki Taniguchi
Hirotaka Nakano

Keywords: IEEE 802.16j, wireless multihop network, upstream, time slot, latency.

Abstract:
In IEEE 802.16j wireless multihop networks, transmission latency from relay nodes to a gateway node is one of the important performance metrics. The transmission latency is mainly affected by a cheduling delay at every relay node, which is determined by algorithms for assigning time slots to wireless links between relay nodes. In this paper, we propose 2 kinds of time slot assignment algorithms for upstream wireless links in IEEE 802.16j multihop networks. One of the proposed algorithms assigns time slots considering the hop count from a gateway node, and the other takes the path from the relay node to the gateway node into account. We evaluated the performance of the proposed algorithms through simulation experiments and confirmed that our algorithms can decrease the upstream latency by up to 15% compared with the existing method, without increasing the average transmission latency of the entire network.

Pages: 6 to 11

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

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