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Paper Abstract and Keywords
Presentation 2022-10-27 10:45
Investigation of NOMA-Based Highly-Efficient Low-Latency HARQ Method with Inter-Base Station Cooperation for URLLC
Ryota Kobayashi, Takanori Hara (Tokyo Univ. of Science), Yasuaki Yuda (Panasonic), Kenichi Higuchi (Tokyo Univ. of Science) RCS2022-131
Abstract (in Japanese) (See Japanese page) 
(in English) This paper extends our previously reported non-orthogonal multiple access (NOMA)-based high-efficient and low-latency hybrid automatic repeat request (HARQ) method for ultra-reliable low latency communications (URLLC) to the case with inter-base station cooperation. In the proposed method, delay-sensitive URLLC packets are preferentially multiplexed with best-effort enhanced mobile broadband (eMBB) packets in the same channel by using superposition coding to reduce the transmission latency of the URLLC packet while alleviating the throughput loss in eMBB. Although the data transmission to the URLLC user is conducted by multiple base stations based on the inter-base station cooperation, the proposed method allocates the radio resource to URLLC users which includes the scheduling (bandwidth allocation) and power allocation at each base station independently to achieve short transmission latency required for URLLC. To avoid an excessive radio resource assignment to URLLC user due to independent resource assignment at each base station, which may result in the throughput degradation in eMBB users, we employ the adaptive pathloss-dependent weighting approach in the calculation of scheduling metric. This achieves appropriate radio resource assignment to URLLC users while reducing the packet error rate (PER) and transmission delay time thanks to the inter-base station cooperation. We show that the proposed method can significantly improve the overall performance of the system that provides simultaneous services of eMBB and URLLC.
Keyword (in Japanese) (See Japanese page) 
(in English) NOMA / Inter-base station cooperation / Hybrid ARQ / Transmission rate control / URLLC / eMBB / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 235, RCS2022-131, pp. 19-24, Oct. 2022.
Paper # RCS2022-131 
Date of Issue 2022-10-20 (RCS) 
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 RCS2022-131

Conference Information
Committee RCS  
Conference Date 2022-10-27 - 2022-10-28 
Place (in Japanese) (See Japanese page) 
Place (in English) Ehime University, and online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Communication Schemes, Wireless Communication Systems, Wireless Standards, Future Wireless Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2022-10-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Investigation of NOMA-Based Highly-Efficient Low-Latency HARQ Method with Inter-Base Station Cooperation for URLLC 
Sub Title (in English)  
Keyword(1) NOMA  
Keyword(2) Inter-base station cooperation  
Keyword(3) Hybrid ARQ  
Keyword(4) Transmission rate control  
Keyword(5) URLLC  
Keyword(6) eMBB  
Keyword(7)  
Keyword(8)  
1st Author's Name Ryota Kobayashi  
1st Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
2nd Author's Name Takanori Hara  
2nd Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
3rd Author's Name Yasuaki Yuda  
3rd Author's Affiliation Panasonic Holdings Corporation (Panasonic)
4th Author's Name Kenichi Higuchi  
4th Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
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Speaker Author-1 
Date Time 2022-10-27 10:45:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2022-131 
Volume (vol) vol.122 
Number (no) no.235 
Page pp.19-24 
#Pages 6 
Date of Issue 2022-10-20 (RCS) 

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