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Paper Abstract and Keywords
Presentation 2016-05-19 13:30
Study on Coverage Enhancement of Uplink Data Channel for 3GPP Narrowband IoT
Tetsuya Yamamoto (Panasonic), Ryoko Kawauchi (PSNRD), Hidetoshi Suzuki (Panasonic) IN2016-5 RCS2016-27
Abstract (in Japanese) (See Japanese page) 
(in English) In 3rd Generation Partnership Project (3GPP), Narrowband Internet of Things (NB-IoT) has been discussed in order to efficiently support the use cases of massive machine type communication such as smart metering. The objectives of NB-IoT are ultra low device cost, low device power consumption, support for massive number of devices, and improved indoor coverage. In NB-IoT, repetition over multiple subframes is one of necessary solutions to improve coverage. In addition, the multiple subframe channel estimation technique, which combines demodulation reference signals (DMRSs) over multiple subframes in order to improve received signal-to-noise power ratio, can be applied assuming NB-IoT devices are operated in quasi-static fading channel environment. However, it is expected that to combine larger number of DMRSs could face the issue on frequency error. In this paper, we show the impact of frequency error on multiple subframe channel estimation for NB-IoT uplink data transmission. We also study the repetition methods which can suppress the impact of frequency error.
Keyword (in Japanese) (See Japanese page) 
(in English) NB-IoT / uplink / channel estimation / repetition / frequency offset / / /  
Reference Info. IEICE Tech. Rep., vol. 116, no. 46, RCS2016-27, pp. 19-24, May 2016.
Paper # RCS2016-27 
Date of Issue 2016-05-12 (IN, RCS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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)
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Conference Information
Committee IN RCS  
Conference Date 2016-05-19 - 2016-05-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To RCS 
Conference Code 2016-05-IN-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study on Coverage Enhancement of Uplink Data Channel for 3GPP Narrowband IoT 
Sub Title (in English)  
Keyword(1) NB-IoT  
Keyword(2) uplink  
Keyword(3) channel estimation  
Keyword(4) repetition  
Keyword(5) frequency offset  
1st Author's Name Tetsuya Yamamoto  
1st Author's Affiliation Panasonic Corporation (Panasonic)
2nd Author's Name Ryoko Kawauchi  
2nd Author's Affiliation Panasonic System Networks R&D Lab. Co. Ltd. (PSNRD)
3rd Author's Name Hidetoshi Suzuki  
3rd Author's Affiliation Panasonic Corporation (Panasonic)
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Date Time 2016-05-19 13:30:00 
Presentation Time 25 
Registration for RCS 
Paper # IEICE-IN2016-5,IEICE-RCS2016-27 
Volume (vol) IEICE-116 
Number (no) no.45(IN), no.46(RCS) 
Page pp.25-30(IN), pp.19-24(RCS) 
#Pages IEICE-6 
Date of Issue IEICE-IN-2016-05-12,IEICE-RCS-2016-05-12 

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