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:
May. 12, 2020
Filed:
Jan. 27, 2017
Mitsubishi Electric Corporation, Tokyo, JP;
Kaoru Tsukamoto, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
There are provided a signal transmitter that generates a signal indicating execution of distance measurement and transmits the signal to a plurality of antennas, a combiner that adds a plurality of received signals that are radio signals including a response signal from the mobile station and each of which is correspondingly received by each of the antennas, a timing detector that detects a timing at which reception power for a signal added by the combiner is maximized and determines a reception timing of the response signal, a base station time calculator that determines a round trip time from transmission of the signal indicating execution of distance measurement to reception of the response signal on the basis of the reception timing and a timing of the transmission of the signal indicating execution of distance measurement, a power detector that identifies one of the antennas that has received a received signal with highest reception power among the plurality of received signals, and a distance calculator that calculates a distance between the distributed antenna base station and the mobile station on the basis of the round trip time, a delay in signal transmission to the antenna identified by the power detector, and a distance to the identified antenna.