| Presentation | 2022-10-27 Investigation of NOMA-Based Highly-Efficient Low-Latency HARQ Method with Inter-Base Station Cooperation for URLLC Ryota Kobayashi, Takanori Hara, Yasuaki Yuda, Kenichi Higuchi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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) |
| Keyword(in English) | NOMA / Inter-base station cooperation / Hybrid ARQ / Transmission rate control / URLLC / eMBB |
| Paper # | RCS2022-131 |
| Date of Issue | 2022-10-20 (RCS) |
| Conference Information | |
| Committee | RCS |
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| Conference Date | 2022/10/27(2days) |
| 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. |
| Chair | Kenichi Higuchi(Tokyo Univ. of Science) |
| Vice Chair | Tomoya Tandai(Toshiba) / Fumihide Kojima(NICT) / Osamu Muta(Kyushu Univ.) |
| Secretary | Tomoya Tandai(Panasonic) / Fumihide Kojima(Univ. of Electro-Comm) / Osamu Muta(Sharp) |
| Assistant | Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Issei Kanno(KDDI Research) / Yuyuan Chang(Tokyo Inst. of Tech) / Kazuki Maruta(Tokyo Univ. of Science) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems |
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| Language | JPN |
| 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 |
| 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) |
| Date | 2022-10-27 |
| Paper # | RCS2022-131 |
| Volume (vol) | vol.122 |
| Number (no) | RCS-235 |
| Page | pp.pp.19-24(RCS), |
| #Pages | 6 |
| Date of Issue | 2022-10-20 (RCS) |