Paper Abstract and Keywords |
Presentation |
2021-06-23 13:40
Investigation of NOMA-based High-Efficient and Low-Latency HARQ Method for URLLC Ryota Kobayashi (Tokyo Univ. of Science), Yasuaki Yuda (Panasonic), Kenichi Higuchi (Tokyo Univ. of Science) RCS2021-40 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Hybrid automatic repeat request (HARQ) is an essential technology to efficiently reduce the error rate. However, for ultra-reliable low latency communications (URLLC) in the 5th generation mobile communication systems and beyond, it is necessary to minimize the increase in latency during the initial transmission and retransmission in HARQ. In this paper, we propose a non-orthogonal multiple access (NOMA)-based high-efficient and low-latency HARQ method for URLLC while minimizing the performance loss for the coexisting service (use case) such as enhanced mobile broadband (eMBB). In the proposed method, delay-sensitive URLLC packets are preferentially multiplexed with best-effort 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. This is achieved by the weighted channel-aware scheduler. The inter-packet interference multiplexed in the same channel is removed by the successive interference canceller (SIC) at the receiver. Furthermore, the transmission rate and resource allocation for the first transmission and retransmission are controlled in an appropriate manner for each service in order to deal with reception errors caused by error in transmission rate control due to time varying channel. 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) |
Non-orthogonal multiple access / Hybrid ARQ / transmission rate control / URLLC / eMBB / / / |
Reference Info. |
IEICE Tech. Rep., vol. 121, no. 72, RCS2021-40, pp. 68-74, June 2021. |
Paper # |
RCS2021-40 |
Date of Issue |
2021-06-16 (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) |
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RCS2021-40 |
Conference Information |
Committee |
RCS |
Conference Date |
2021-06-23 - 2021-06-25 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Online |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
First Presentation in IEICE Technical Committee, Resource Control, Scheduling, Wireless Communications, etc. |
Paper Information |
Registration To |
RCS |
Conference Code |
2021-06-RCS |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Investigation of NOMA-based High-Efficient and Low-Latency HARQ Method for URLLC |
Sub Title (in English) |
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Keyword(1) |
Non-orthogonal multiple access |
Keyword(2) |
Hybrid ARQ |
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transmission rate control |
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URLLC |
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eMBB |
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1st Author's Name |
Ryota Kobayashi |
1st Author's Affiliation |
Tokyo University of Science (Tokyo Univ. of Science) |
2nd Author's Name |
Yasuaki Yuda |
2nd Author's Affiliation |
Panasonic Corporation (Panasonic) |
3rd Author's Name |
Kenichi Higuchi |
3rd Author's Affiliation |
Tokyo University of Science (Tokyo Univ. of Science) |
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Speaker |
Author-1 |
Date Time |
2021-06-23 13:40:00 |
Presentation Time |
10 minutes |
Registration for |
RCS |
Paper # |
RCS2021-40 |
Volume (vol) |
vol.121 |
Number (no) |
no.72 |
Page |
pp.68-74 |
#Pages |
7 |
Date of Issue |
2021-06-16 (RCS) |
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