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Paper Abstract and Keywords
Presentation 2019-08-19 14:20
[Invited Talk] A study of wireless technologies for 5G mobile communications system
Eiji Okamoto (NITech) SRW2019-20
Abstract (in Japanese) (See Japanese page) 
(in English) In the fifth generation mobile communications system (5G), in addition to the conventional enhanced mobile broadband (eMBB) use case, two use cases of ultra-reliable and low-latency communications (URLLC) and massive machine type communications (mMTC) have newly been added. Furthermore, high frequencies not only in microwave band but also millimeter-wave band are used in 5G to realize a broadband communication. However, according to the frequency increase, a cell coverage becomes small due to a large propagation loss, and the maximum Doppler frequency of fading becomes high, resulting in a severe transmission performance degradation. Therefore, to satisfy the various performance requirements such as reliability, latency, and energy efficiency in the new use cases of 5G, applying additional technologies are indispensable. We are considering exploiting short range wireless transmissions to improve the 5G performances. In this study, we introduce some of the proposed schemes for 5G. In particular, for URLLC, we consider utilizing a cooperative vehicle-to-vehicle transmission to improve an uplink vehicle-to-infrastructure (V2I) transmission from far vehicle, an adaptive beam tracking scheme for uplink V2I transmission, and an open-loop hybrid automatic repeat request scheme for low-latency transmission. For mMTC, we consider an energy-efficient uplink Internet of things (IoT) data transmission scheme using an unmanned aerial vehicle base station, a radio-wave encrypted non-orthogonal multiple access scheme for massive secure uplink IoT transmission, and an advanced human mobility control scheme.
Keyword (in Japanese) (See Japanese page) 
(in English) 5G / ultra-reliable and low-latency communications / massive machine type communications / vehicle wireless communication / IoT / / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 166, SRW2019-20, pp. 41-41, Aug. 2019.
Paper # SRW2019-20 
Date of Issue 2019-08-12 (SRW) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF SRW2019-20

Conference Information
Committee SRW  
Conference Date 2019-08-19 - 2019-08-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Tanzan University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Network， MAC， Sensor， mmWave, etc. 
Paper Information
Registration To SRW 
Conference Code 2019-08-SRW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study of wireless technologies for 5G mobile communications system 
Sub Title (in English)  
Keyword(1) 5G  
Keyword(2) ultra-reliable and low-latency communications  
Keyword(3) massive machine type communications  
Keyword(4) vehicle wireless communication  
Keyword(5) IoT  
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1st Author's Name Eiji Okamoto  
1st Author's Affiliation Nagoya Institute of Technology (NITech)
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Speaker Author-1 
Date Time 2019-08-19 14:20:00 
Presentation Time 50 minutes 
Registration for SRW 
Paper # SRW2019-20 
Volume (vol) vol.119 
Number (no) no.166 
Page p.41 
#Pages 1 
Date of Issue 2019-08-12 (SRW) 

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