BRNN-LSTM for Initial Access in Millimeter Wave Communications

The use of beamforming technology in standalone (SA) millimeter wave communications results in directional transmission and reception modes at the mobile station (MS) and base station (BS). This results in initial beam access challenges, since the MS and BS are now compelled to perform spatial searc...

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Main Authors: Adel Aldalbahi, Farzad Shahabi, Mohammed Jasim
Format: Article
Language:English
Published: MDPI AG 2021-06-01
Series:Electronics
Subjects:
Online Access:https://www.mdpi.com/2079-9292/10/13/1505
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author Adel Aldalbahi
Farzad Shahabi
Mohammed Jasim
author_facet Adel Aldalbahi
Farzad Shahabi
Mohammed Jasim
author_sort Adel Aldalbahi
collection DOAJ
description The use of beamforming technology in standalone (SA) millimeter wave communications results in directional transmission and reception modes at the mobile station (MS) and base station (BS). This results in initial beam access challenges, since the MS and BS are now compelled to perform spatial search to determine the best beam directions that return highest signal levels. The high number of signal measurements here prolongs access times and latencies, as well as increasing power and energy consumption. Hence this paper proposes a first study on leveraging deep learning schemes to simplify the beam access procedure in standalone mmWave networks. The proposed scheme combines bidirectional recurrent neural network (BRNN) and long short-term memory (LSTM) to achieve fast initial access times. Namely, the scheme predicts the best beam index for use in the next time step once a MS accesses the network, e.g., transition from sleep to active (or idle) modes. The scheme eliminates the need for beam scanning, thereby achieving ultra-low access times and energy efficiencies as compared to existing methods.
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spelling doaj.art-f4d20a8edfc04d58aa67b55116f8d14d2023-11-22T01:08:44ZengMDPI AGElectronics2079-92922021-06-011013150510.3390/electronics10131505BRNN-LSTM for Initial Access in Millimeter Wave CommunicationsAdel Aldalbahi0Farzad Shahabi1Mohammed Jasim2Department of Electrical Engineering, College of Engineering, King Faisal University, P.O. Box 380, Al-Ahsa 31982, Saudi ArabiaDepartment of Electrical Engineering, School of Engineering, University of South Florida, Tampa, FL 33620, USASchool of Engineering, University of Mount Union, Alliance, OH 44601, USAThe use of beamforming technology in standalone (SA) millimeter wave communications results in directional transmission and reception modes at the mobile station (MS) and base station (BS). This results in initial beam access challenges, since the MS and BS are now compelled to perform spatial search to determine the best beam directions that return highest signal levels. The high number of signal measurements here prolongs access times and latencies, as well as increasing power and energy consumption. Hence this paper proposes a first study on leveraging deep learning schemes to simplify the beam access procedure in standalone mmWave networks. The proposed scheme combines bidirectional recurrent neural network (BRNN) and long short-term memory (LSTM) to achieve fast initial access times. Namely, the scheme predicts the best beam index for use in the next time step once a MS accesses the network, e.g., transition from sleep to active (or idle) modes. The scheme eliminates the need for beam scanning, thereby achieving ultra-low access times and energy efficiencies as compared to existing methods.https://www.mdpi.com/2079-9292/10/13/1505millimeter wavebeamforminginitial beam accessbidirectional recurrent neural networklong short-term memoryaccess times
spellingShingle Adel Aldalbahi
Farzad Shahabi
Mohammed Jasim
BRNN-LSTM for Initial Access in Millimeter Wave Communications
Electronics
millimeter wave
beamforming
initial beam access
bidirectional recurrent neural network
long short-term memory
access times
title BRNN-LSTM for Initial Access in Millimeter Wave Communications
title_full BRNN-LSTM for Initial Access in Millimeter Wave Communications
title_fullStr BRNN-LSTM for Initial Access in Millimeter Wave Communications
title_full_unstemmed BRNN-LSTM for Initial Access in Millimeter Wave Communications
title_short BRNN-LSTM for Initial Access in Millimeter Wave Communications
title_sort brnn lstm for initial access in millimeter wave communications
topic millimeter wave
beamforming
initial beam access
bidirectional recurrent neural network
long short-term memory
access times
url https://www.mdpi.com/2079-9292/10/13/1505
work_keys_str_mv AT adelaldalbahi brnnlstmforinitialaccessinmillimeterwavecommunications
AT farzadshahabi brnnlstmforinitialaccessinmillimeterwavecommunications
AT mohammedjasim brnnlstmforinitialaccessinmillimeterwavecommunications