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Multichannel outage-aware MAC protocols for wireless networks

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3 Author(s)
Hyukjin Lee ; School of Electrical and Electronic Engineering, The University of Adelaide, Australia 5005 ; Cheng-Chew Lim ; Jinho Choi

Channel outage represents channel fading and interference. Since each user may experience different fading and interference (i.e., channel outage) over distinct channels, throughput may vary depending on channel selection of users. In this paper, we propose two types of multichannel outage-aware medium access control (MAC) protocols to improve throughput: 1) frequency-domain backoff MAC protocols with outage-aware refined channel sets using distributed channel selection, and 2) time-domain backoff MAC protocols with a lowest-outage increasing heuristic using centralised channel allocation to find optimal user sets. Simulation results show the impacts of the proposed MAC protocols on throughput under multichannel outage environments with respect to various user numbers.

Published in:

2009 4th IEEE Conference on Industrial Electronics and Applications

Date of Conference:

25-27 May 2009