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Paper Abstract and Keywords
Presentation 2017-11-08 16:45
Low latency ARQ scheme for Wireless entrance systems for 5G small cell base stations
Atsushi Ohta, Satoshi Kurosaki, Kazuto Goto, Yutaka Imaizumi, Naoki Kita (NTT) RCS2017-218
Abstract (in Japanese) (See Japanese page) 
(in English) Toward 5th generation mobile communications system, various researches for small cells with massive MIMO, which are effective for off-loading the heavy mobile traffic around crowded places to networks from macro cell systems, have been studied. Because the small cell base stations (SBSs) with high-SHF bands will be allocated on walls of buildings, it is expected that the wireless entrance systems for the SBSs can accelerate its prompt service development due to its installation flexibility. In 5G, both very low latency and BER performance are required as well as high speed communication ability. In case of installation of SBS to a signboard on a wall, the size of the SBS itself and its antenna system should be as small as possible. The situation is different from the cases with large parabolic antenna, therefore the effects of reflected waves in the street canyon will not be negligible small and it usually degrades its BER performance and cause high level error floor on high speed wireless communication over 10 Gbit/s. In order to overcome the problem, introducing automatic repeat request (ARQ) schemes is reasonable approach, however, the ARQ improves BER performance at the sacrifice of transmission delay performance. Because of strict delay requirement for 5G, the target delay time for the wireless entrance systems is expected to be quite low around 100-150s. In this paper, we propose a new ARQ scheme with very low latency and report its basic characteristics with computer simulations and analytic approach.
Keyword (in Japanese) (See Japanese page) 
(in English) 5G / Small Cell / Millimeter Wave / Wireless Entrance / ARQ / Low Latency / Mobile Fronthaul /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 284, RCS2017-218, pp. 75-80, Nov. 2017.
Paper # RCS2017-218 
Date of Issue 2017-11-01 (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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF RCS2017-218

Conference Information
Committee AP RCS  
Conference Date 2017-11-08 - 2017-11-10 
Place (in Japanese) (See Japanese page) 
Place (in English) Fukuoka University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc. 
Paper Information
Registration To RCS 
Conference Code 2017-11-AP-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Low latency ARQ scheme for Wireless entrance systems for 5G small cell base stations 
Sub Title (in English)  
Keyword(1) 5G  
Keyword(2) Small Cell  
Keyword(3) Millimeter Wave  
Keyword(4) Wireless Entrance  
Keyword(5) ARQ  
Keyword(6) Low Latency  
Keyword(7) Mobile Fronthaul  
1st Author's Name Atsushi Ohta  
1st Author's Affiliation NTT Corporation (NTT)
2nd Author's Name Satoshi Kurosaki  
2nd Author's Affiliation NTT Corporation (NTT)
3rd Author's Name Kazuto Goto  
3rd Author's Affiliation NTT Corporation (NTT)
4th Author's Name Yutaka Imaizumi  
4th Author's Affiliation NTT Corporation (NTT)
5th Author's Name Naoki Kita  
5th Author's Affiliation NTT Corporation (NTT)
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Date Time 2017-11-08 16:45:00 
Presentation Time 25 
Registration for RCS 
Paper # IEICE-RCS2017-218 
Volume (vol) IEICE-117 
Number (no) no.284 
Page pp.75-80 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2017-11-01 

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