US 12,081,284 B2
Apparatus, method and program for predicting attenuation of electromagnetic waves
Shoma Tanaka, Tokyo (JP); Hideki Omote, Tokyo (JP); Akihiro Sato, Tokyo (JP); Sho Kimura, Tokyo (JP); and HoYu Lin, Tokyo (JP)
Assigned to SoftBank Corp., Tokyo (JP)
Appl. No. 18/546,437
Filed by SoftBank Corp., Tokyo (JP)
PCT Filed Jan. 28, 2022, PCT No. PCT/JP2022/003416
§ 371(c)(1), (2) Date Aug. 15, 2023,
PCT Pub. No. WO2022/176575, PCT Pub. Date Aug. 25, 2022.
Claims priority of application No. 2021-024596 (JP), filed on Feb. 18, 2021.
Prior Publication US 2024/0097808 A1, Mar. 21, 2024
Int. Cl. H04B 17/373 (2015.01); G01W 1/10 (2006.01); G01W 1/14 (2006.01); H04B 17/309 (2015.01); H04B 17/391 (2015.01)
CPC H04B 17/373 (2015.01) [G01W 1/10 (2013.01); G01W 1/14 (2013.01); H04B 17/309 (2015.01); H04B 17/391 (2015.01)] 12 Claims
OG exemplary drawing
 
1. An apparatus for predicting an attenuation of electromagnetic waves between a radio apparatus located above a target area and a terrestrial surface, comprising:
a data acquisition section for acquiring past weather data in the target area; and
an estimation section for estimating a weather corresponding to a future target year in an upper airspace of the target area based on the past weather data, and estimating an attenuation of electromagnetic waves based on an estimation result of the weather,
wherein the data acquisition section acquires past rainfall-intensity data in the target area, and
wherein the estimation section:
updates a correction term included in an estimation equation of rainfall intensity for estimating a future rainfall intensity in the target area, based on the past rainfall-intensity data corresponding to the target area;
estimates a rainfall intensity of the future target year in the target area, based on the estimation equation of rainfall intensity including the correction term after updating; and
estimates the attenuation of the electromagnetic waves corresponding to the future target year in the target area, based on an estimation result of the rainfall intensity.