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| Presentation | 2021-09-10 10:35 Demonstration of Footprint Fixation and Area Optimization Using a Prototype Cylindrical Array Antenna for HAPS Service Link Shoichi Sudo, Yohei Shibata, Koji Tashiro, Wataru Takabatake, Kenji Hoshino (SB)  AP2021-62 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | High-Altitude Platform Station (HAPS), which provides direct communication services to mobile devices on the ground from an altitude of 20 km, is attracting attention as a new communication platform for disaster countermeasures. In the HAPS system, an ultra-wide area is realized by covering the service area with multiple cells. In this case, HAPS using unmanned aerial vehicles (UAVs) such as solar planes cannot maintain stable communication quality due to simultaneous handovers of many devices between cells which are caused by circling flight in the stratosphere. To solve this problem, we proposed a digital beamforming method to fix the footprint (FP) using a cylindrical multi-element phased array antenna and demonstrated the FP fixation control in a single cell. We also proposed an automatic area optimization scheme using beamforming antennas to optimize the configuration of each cell according to the geographical bias of the user distribution. We have implemented the FP fixation control function and the dynamic cell optimization function using multiple cells. In this paper, we report the results of the demonstration of each function. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | HAPS / Footprint Fixation / Cylindrical Array Antenna / Area Optimization / Pseudo-inverse Matrix / Experiment / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 168, AP2021-62, pp. 29-34, Sept. 2021. | |
| Paper # | AP2021-62 | |
| Date of Issue | 2021-09-02 (AP) | |
| 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 | AP2021-62 |
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| Conference Information | |
| Committee | MW AP |
| Conference Date | 2021-09-09 - 2021-09-10 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Microwave, Millimeter wave |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2021-09-MW-AP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Demonstration of Footprint Fixation and Area Optimization Using a Prototype Cylindrical Array Antenna for HAPS Service Link |
| Sub Title (in English) | |
| Keyword(1) | HAPS |
| Keyword(2) | Footprint Fixation |
| Keyword(3) | Cylindrical Array Antenna |
| Keyword(4) | Area Optimization |
| Keyword(5) | Pseudo-inverse Matrix |
| Keyword(6) | Experiment |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Shoichi Sudo |
| 1st Author's Affiliation | SoftBank Corp. (SB) |
| 2nd Author's Name | Yohei Shibata |
| 2nd Author's Affiliation | SoftBank Corp. (SB) |
| 3rd Author's Name | Koji Tashiro |
| 3rd Author's Affiliation | SoftBank Corp. (SB) |
| 4th Author's Name | Wataru Takabatake |
| 4th Author's Affiliation | SoftBank Corp. (SB) |
| 5th Author's Name | Kenji Hoshino |
| 5th Author's Affiliation | SoftBank Corp. (SB) |
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| Speaker | Author-1 |
| Date Time | 2021-09-10 10:35:00 |
| Presentation Time | 25 minutes |
| Registration for | AP |
| Paper # | AP2021-62 |
| Volume (vol) | vol.121 |
| Number (no) | no.168 |
| Page | pp.29-34 |
| #Pages | 6 |
| Date of Issue | 2021-09-02 (AP) |
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