NOMA-Based Highly-Efficient Low-Latency HARQ with Inter-Base Station Cooperation for URLLC

Ryota KOBAYASHI; Takanori HARA; Yasuaki YUDA; Kenichi HIGUCHI

doi:10.1587/transcom.2023EBT0005

IEICE TRANSACTIONS on Communications

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NOMA-Based Highly-Efficient Low-Latency HARQ with Inter-Base Station Cooperation for URLLC

Ryota KOBAYASHI, Takanori HARA, Yasuaki YUDA, Kenichi HIGUCHI

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Summary :

This paper extends our previously reported non-orthogonal multiple access (NOMA)-based highly-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 using superposition coding to reduce the transmission latency of the URLLC packet while alleviating the throughput loss in eMBB. Although data transmission to the URLLC terminal is conducted by multiple base stations based on inter-base station cooperation, the proposed method allocates radio resources to URLLC terminals which include scheduling (bandwidth allocation) and power allocation at each base station independently to achieve the short transmission latency required for URLLC. To avoid excessive radio resource assignment to URLLC terminals due to independent resource assignment at each base station, which may result in throughput degradation in eMBB terminals, we employ an adaptive path-loss-dependent weighting approach in the scheduling-metric calculation. This achieves appropriate radio resource assignment to URLLC terminals while reducing the packet error rate (PER) and transmission delay time thanks to the inter-base station cooperation. We show that the proposed method significantly improves the overall performance of the system that provides simultaneous eMBB and URLLC services.

Publication: IEICE TRANSACTIONS on Communications Vol.E106-B No.11 pp.1219-1227

Publication Date: 2023/11/01

Publicized: 2023/07/24

Online ISSN: 1745-1345

DOI: 10.1587/transcom.2023EBT0005

Type of Manuscript: PAPER

Category: Wireless Communication Technologies

Authors

Ryota KOBAYASHI
  Tokyo University of Science
Takanori HARA
  Tokyo University of Science
Yasuaki YUDA
  Panasonic Holdings Corporation
Kenichi HIGUCHI
  Tokyo University of Science

Keyword

Hybrid ARQ, non-orthogonal multiple access, NOMA, Inter-base station cooperation, scheduling, transmission rate control, URLLC, eMBB

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Ryota KOBAYASHI, Takanori HARA, Yasuaki YUDA, Kenichi HIGUCHI, "NOMA-Based Highly-Efficient Low-Latency HARQ with Inter-Base Station Cooperation for URLLC" in IEICE TRANSACTIONS on Communications, vol. E106-B, no. 11, pp. 1219-1227, November 2023, doi: 10.1587/transcom.2023EBT0005.
Abstract: This paper extends our previously reported non-orthogonal multiple access (NOMA)-based highly-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 using superposition coding to reduce the transmission latency of the URLLC packet while alleviating the throughput loss in eMBB. Although data transmission to the URLLC terminal is conducted by multiple base stations based on inter-base station cooperation, the proposed method allocates radio resources to URLLC terminals which include scheduling (bandwidth allocation) and power allocation at each base station independently to achieve the short transmission latency required for URLLC. To avoid excessive radio resource assignment to URLLC terminals due to independent resource assignment at each base station, which may result in throughput degradation in eMBB terminals, we employ an adaptive path-loss-dependent weighting approach in the scheduling-metric calculation. This achieves appropriate radio resource assignment to URLLC terminals while reducing the packet error rate (PER) and transmission delay time thanks to the inter-base station cooperation. We show that the proposed method significantly improves the overall performance of the system that provides simultaneous eMBB and URLLC services.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2023EBT0005/_p

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@ARTICLE{e106-b_11_1219,
author={Ryota KOBAYASHI, Takanori HARA, Yasuaki YUDA, Kenichi HIGUCHI, },
journal={IEICE TRANSACTIONS on Communications},
title={NOMA-Based Highly-Efficient Low-Latency HARQ with Inter-Base Station Cooperation for URLLC},
year={2023},
volume={E106-B},
number={11},
pages={1219-1227},
abstract={This paper extends our previously reported non-orthogonal multiple access (NOMA)-based highly-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 using superposition coding to reduce the transmission latency of the URLLC packet while alleviating the throughput loss in eMBB. Although data transmission to the URLLC terminal is conducted by multiple base stations based on inter-base station cooperation, the proposed method allocates radio resources to URLLC terminals which include scheduling (bandwidth allocation) and power allocation at each base station independently to achieve the short transmission latency required for URLLC. To avoid excessive radio resource assignment to URLLC terminals due to independent resource assignment at each base station, which may result in throughput degradation in eMBB terminals, we employ an adaptive path-loss-dependent weighting approach in the scheduling-metric calculation. This achieves appropriate radio resource assignment to URLLC terminals while reducing the packet error rate (PER) and transmission delay time thanks to the inter-base station cooperation. We show that the proposed method significantly improves the overall performance of the system that provides simultaneous eMBB and URLLC services.},
keywords={},
doi={10.1587/transcom.2023EBT0005},
ISSN={1745-1345},
month={November},}

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TY - JOUR
TI - NOMA-Based Highly-Efficient Low-Latency HARQ with Inter-Base Station Cooperation for URLLC
T2 - IEICE TRANSACTIONS on Communications
SP - 1219
EP - 1227
AU - Ryota KOBAYASHI
AU - Takanori HARA
AU - Yasuaki YUDA
AU - Kenichi HIGUCHI
PY - 2023
DO - 10.1587/transcom.2023EBT0005
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E106-B
IS - 11
JA - IEICE TRANSACTIONS on Communications
Y1 - November 2023
AB - This paper extends our previously reported non-orthogonal multiple access (NOMA)-based highly-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 using superposition coding to reduce the transmission latency of the URLLC packet while alleviating the throughput loss in eMBB. Although data transmission to the URLLC terminal is conducted by multiple base stations based on inter-base station cooperation, the proposed method allocates radio resources to URLLC terminals which include scheduling (bandwidth allocation) and power allocation at each base station independently to achieve the short transmission latency required for URLLC. To avoid excessive radio resource assignment to URLLC terminals due to independent resource assignment at each base station, which may result in throughput degradation in eMBB terminals, we employ an adaptive path-loss-dependent weighting approach in the scheduling-metric calculation. This achieves appropriate radio resource assignment to URLLC terminals while reducing the packet error rate (PER) and transmission delay time thanks to the inter-base station cooperation. We show that the proposed method significantly improves the overall performance of the system that provides simultaneous eMBB and URLLC services.
ER -

IEICE TRANSACTIONS on Communications