The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 2025
Filed:
Jul. 07, 2021
Softbank Corp., Tokyo, JP;
Takafumi Fujii, Tokyo, JP;
SoftBank Corp., Tokyo, JP;
Abstract
It is to prevent a deterioration of communication quality due to an instantaneous increase in a propagation spatial correlation between plural feeder links between plural antennas for feeder link (FL antennas) incorporated in an aerial-floating type communication relay apparatus (HAPS) and plural gateway (GW) stations. The aerial-staying type communication relay apparatus (HAPS) comprises a feeder-link communication section that transmits and receives relay signals different from each other at a same frequency in the feeder links between the communication relay apparatus and plural GW stations that are time-synchronized with each other, an interference suppression section that suppresses interferences between the plural feeder links formed between the communication relay apparatus and the plural GW stations, means for obtaining correlation index values (SINRs, singular values or eigenvalues) indicating respective degrees of propagation spatial correlation of the plural feeder links, and means for changing a mutual positional relationship between the plural antennas for feeder link, based on a comparison result between the correlation index values and a predetermined threshold value.