Title:
COMMUNICATION RELAY DEVICE, REMOTE CONTROL DEVICE, SYSTEM, AREA CONTROL METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2022/215487
Kind Code:
A1
Abstract:
Provided is an airborne communication relay device (HAPS) which is capable of implementing dynamic area control accommodating changes in the distribution of terminal devices in a service area composed of a plurality of cells formed toward the ground, and which can suppress an increase in the time required for relevant area optimization. The midair-residing communication relay device (HAPS) estimates the positions of a plurality of terminal devices located in a service area; divides the service area into a plurality (M) of sub-areas including a plurality of cells; optimizes, for each sub-area, a plurality (L) of types of antenna parameters of a service link antenna on the basis of a result of estimation of the positions of the plurality of terminal devices; and applies, to the service link antenna, optimum values of the plurality (L) of types of antenna parameters after the optimization for each sub-area is completed for all of the plurality (M) of sub-areas.
Inventors:
SHIBATA YOHEI (JP)
TAKABATAKE WATARU (JP)
HOSHINO KENJI (JP)
TAKABATAKE WATARU (JP)
HOSHINO KENJI (JP)
Application Number:
PCT/JP2022/012441
Publication Date:
October 13, 2022
Filing Date:
March 17, 2022
Export Citation:
Assignee:
SOFTBANK CORP (JP)
International Classes:
H04W16/26; H04B7/15; H04W16/28; H04W84/06
Domestic Patent References:
| WO2019235324A1 | 2019-12-12 |
Foreign References:
| JP2018093478A | 2018-06-14 | |||
| JP2005295090A | 2005-10-20 |
Other References:
SHIBATA, N. KANAZAWAM. KONISHIK. HOSHINO, Y. OHTAA. NAGATE: "System Design of Gigabit HAPS Mobile Communications", IEEE ACCESS, vol. 8, 2020, pages 157995 - 158007, XP011807911, DOI: 10.1109/ACCESS.2020.3019820
YOHEI SHIBATAWATARU TAKABATAKEKENJI HOSHINOATSUSHI NAGATE: "HAPS dynamic cell control algorithm considering user distribution in plural-cell configuration", IEICE TECHNICAL REPORT, vol. 120, no. 322, January 2021 (2021-01-01), pages 170 - 175
YOHEI SHIBATAWATARU TAKABATAKEKENJI HOSHINOATSUSHI NAGATE: "HAPS dynamic cell control algorithm considering user distribution in plural-cell configuration", IEICE TECHNICAL REPORT, vol. 120, no. 322, January 2021 (2021-01-01), pages 170 - 175
Attorney, Agent or Firm:
KURODA Hisashi et al. (JP)
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