The scheme of mitigating the asymmetric links problem in wireless sensor networks

Document type: Conference Papers
Peer reviewed: Yes
Author(s): Yuanfang Chen, Mingchu Li, Lei Shu, L. Wang, Quang Trung Duong
Title: The scheme of mitigating the asymmetric links problem in wireless sensor networks
Conference name: IEEE Globecom Workshops, GC'10
Year: 2010
ISBN: 978-142448865-0
Publisher: IEEE
City: Miami
URI/DOI: 10.1109/GLOCOMW.2010.5700324
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Electrical Engineering (Sektionen för ingenjörsvetenskap - Avd. för elektroteknik)
School of Engineering S-371 79 Karlskrona
+46 455 38 50 00
http://www.bth.se/ing/
Language: English
Abstract: This paper investigates the radio irregularity (RI) phenomenon and its impact on communication performance in wireless sensor networks (WSNs). Based on the theoretical analysis, we find that the RI phenomenon induces the asymmetric links problem. According to this discovery, we propose a novel HCT (Hop-count Correction Tree) scheme to handle this problem. HCT utilizes graph theoretical method to get a search tree and correct the hop count error that appears in the adjacent nodes. Practical results obtained from testbed experiments demonstrate that this solution can greatly improve localization accuracy in the presence of RI
Subject: Signal Processing\General
Keywords: Asymmetric wireless sensor networks, Radio irregularity, Range-free localization
Edit