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| Presentation | 2021-10-21 13:00 Initial access beam search method with variable beam width according to the area size Takuto Arai, Tatsuhiko Iwakuni, Syuki Wai, Daisei Uchida, Naoki Kita (NTT)  RCS2021-122 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | High gain antennas using narrow-beamforming are required to compensate for high propagation loss in high frequency bands such as millimeter wave and sub-terahertz , which are promising bands to be used for extreme high-speed and high-capacity. When the narrow-beamforming is used for initial access beam searching over all directions, the overhead needed for the beam searching is large. On the other hand, when the wide-beamforming is used to reduce the overhead for the initial access, the coverage area shrinks due to beamforming gain lowering. In this paper, we propose a newly initial access beam search scheme with variable beam width based on the distance to shadowing obstacles for each direction. Our simulation evaluations show that the proposed method can reduce the overhead without shrinking the coverage area in shadowing environments compared with the narrow-beamforming over all directions. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Beam search / Initial access / High frequency band / Overhead reduction / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 210, RCS2021-122, pp. 25-30, Oct. 2021. | |
| Paper # | RCS2021-122 | |
| Date of Issue | 2021-10-14 (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 | RCS2021-122 |
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| Conference Information | |
| Committee | RCS |
| Conference Date | 2021-10-21 - 2021-10-22 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | 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 | 2021-10-RCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Initial access beam search method with variable beam width according to the area size |
| Sub Title (in English) | |
| Keyword(1) | Beam search |
| Keyword(2) | Initial access |
| Keyword(3) | High frequency band |
| Keyword(4) | Overhead reduction |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Takuto Arai |
| 1st Author's Affiliation | NTT Corporation (NTT) |
| 2nd Author's Name | Tatsuhiko Iwakuni |
| 2nd Author's Affiliation | NTT Corporation (NTT) |
| 3rd Author's Name | Syuki Wai |
| 3rd Author's Affiliation | NTT Corporation (NTT) |
| 4th Author's Name | Daisei Uchida |
| 4th Author's Affiliation | NTT Corporation (NTT) |
| 5th Author's Name | Naoki Kita |
| 5th Author's Affiliation | NTT Corporation (NTT) |
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| Speaker | Author-1 |
| Date Time | 2021-10-21 13:00:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2021-122 |
| Volume (vol) | vol.121 |
| Number (no) | no.210 |
| Page | pp.25-30 |
| #Pages | 6 |
| Date of Issue | 2021-10-14 (RCS) |
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