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Mitigating Lateral Interference: Adaptive Beam Switching for Robust Millimeter-Wave Networks

Steinmetzer, Daniel and Loch, Adrian and García-García, Amanda and Widmer, Jörg and Hollick, Matthias (2017):
Mitigating Lateral Interference: Adaptive Beam Switching for Robust Millimeter-Wave Networks.
In: 1st ACM Workshop on Millimeter Wave Networks and Sensing Systems (mmNets 2017), ACM, Snowbird, Utah, USA, ISBN 978-1-4503-5143-0/17/10,
DOI: 10.1145/3130242.3130244, [Conference or Workshop Item]

Abstract

Putting into practice 'pseudo-wire' links in wireless millimeter-wave (mm-wave) networks is challenging due to the significant side lobes of consumer-grade phased antenna arrays. Nodes should steer their beams such that they maximize the signal gain but also minimize interference from lateral directions via both their main lobe and their side lobes. Most importantly, interference can be caused by parallel operation of incompatible standards such as WiGig and IEEE 802.11ad and may change very fast. This timing requirement, prevents the use of existing beam switching solutions to mitigate interference. In this paper, we present an adaptive beam switching (ABS) mechanism that can deal with the above timescale issue in rapidly changing interference scenarios. Instead of performing a full beam sweep, the key idea is to only probe beampatterns at the receiver which are likely to avoid interference. In contrast to earlier work, our mechanism does not require any location information nor a detailed shape of the beampatterns. We exploit similarities among side lobes of beampatterns to estimate the performance of all beampatterns without sending extensive probes. To evaluate our mechanism in practice, we develop a customized research platform that allows us to control the beam-selection on low-cost IEEE 802.11ad routers. Experimental results with WiGig transceivers as interference source show that our adaptive beam switching mechanism achieves an average throughput gain of 60% and decreases the training time by 82.4% compared to the original IEEE 802.11ad behavior.

Item Type: Conference or Workshop Item
Erschienen: 2017
Creators: Steinmetzer, Daniel and Loch, Adrian and García-García, Amanda and Widmer, Jörg and Hollick, Matthias
Title: Mitigating Lateral Interference: Adaptive Beam Switching for Robust Millimeter-Wave Networks
Language: English
Abstract:

Putting into practice 'pseudo-wire' links in wireless millimeter-wave (mm-wave) networks is challenging due to the significant side lobes of consumer-grade phased antenna arrays. Nodes should steer their beams such that they maximize the signal gain but also minimize interference from lateral directions via both their main lobe and their side lobes. Most importantly, interference can be caused by parallel operation of incompatible standards such as WiGig and IEEE 802.11ad and may change very fast. This timing requirement, prevents the use of existing beam switching solutions to mitigate interference. In this paper, we present an adaptive beam switching (ABS) mechanism that can deal with the above timescale issue in rapidly changing interference scenarios. Instead of performing a full beam sweep, the key idea is to only probe beampatterns at the receiver which are likely to avoid interference. In contrast to earlier work, our mechanism does not require any location information nor a detailed shape of the beampatterns. We exploit similarities among side lobes of beampatterns to estimate the performance of all beampatterns without sending extensive probes. To evaluate our mechanism in practice, we develop a customized research platform that allows us to control the beam-selection on low-cost IEEE 802.11ad routers. Experimental results with WiGig transceivers as interference source show that our adaptive beam switching mechanism achieves an average throughput gain of 60% and decreases the training time by 82.4% compared to the original IEEE 802.11ad behavior.

Title of Book: 1st ACM Workshop on Millimeter Wave Networks and Sensing Systems (mmNets 2017)
Publisher: ACM
ISBN: 978-1-4503-5143-0/17/10
Uncontrolled Keywords: S1;Solutions;Interference, Millimeter-Wave, mm-wave, 60 GHz, 802.11ad, Talon AD7200, Beam Steering, Sector Sweep; Solutions; S1
Divisions: 20 Department of Computer Science
20 Department of Computer Science > Sichere Mobile Netze
DFG-Collaborative Research Centres (incl. Transregio)
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
Profile Areas
Profile Areas > Cybersecurity (CYSEC)
LOEWE
LOEWE > LOEWE-Schwerpunkte
LOEWE > LOEWE-Schwerpunkte > NiCER – Networked infrastructureless Cooperation for Emergency Response
LOEWE > LOEWE-Zentren
LOEWE > LOEWE-Zentren > CRISP - Center for Research in Security and Privacy
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 1119: CROSSING – Cryptography-Based Security Solutions: Enabling Trust in New and Next Generation Computing Environments
Event Location: Snowbird, Utah, USA
Date Deposited: 03 Aug 2017 12:59
DOI: 10.1145/3130242.3130244
Identification Number: TUD-CS-2017-0210
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