Title:
SYNCHRONIZATION-SIGNAL CONVERTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/044861
Kind Code:
A1
Abstract:
[Problem] To provide a synchronization-signal converting device that increases the degree of freedom of system construction by realizing a system that is synchronized with GPS standard time even in an environment in which it is difficult to receive GPS signals. [Solution] Provided is a synchronization-signal converting device in which: for a specific search range, an LTE-signal searching unit 113 sets a PCI and a center frequency in a BCH demodulator 114 to perform demodulation on the basis of a correlation value between an S-SS signal and a known reference, sets said signal as a synchronization-LTE-signal candidate if the CRC result is normal and determines candidates for a plurality of search ranges, and selects a candidate in which the correlation value becomes maximum so as to serve as a synchronization LTE signal; and a pseudo-GPS-reception-signal transmitting unit 115 identifies a system-synchronizing signal that is synchronized with the GPS standard time from notification information obtained by demodulating the synchronization LTE signal, generates time information synchronized with the standard time by correcting, at the timing of the system-synchronizing signal, the time information acquired from a broadcast wave, generates a pseudo GPS reception signal, and outputs said signal to a base-station device 20.
Inventors:
TAKASHIMA MITSUHIRO (JP)
YOTSUMOTO KOJI (JP)
KUSHIOKA YOICHI (JP)
YOTSUMOTO KOJI (JP)
KUSHIOKA YOICHI (JP)
Application Number:
PCT/JP2020/031460
Publication Date:
March 11, 2021
Filing Date:
August 20, 2020
Export Citation:
Assignee:
HITACHI INT ELECTRIC INC (JP)
International Classes:
H04L7/00; G01S19/11; G01S19/37; H04W56/00
Domestic Patent References:
| WO2016194518A1 | 2016-12-08 |
Foreign References:
| JP2017169150A | 2017-09-21 | |||
| JP2016213530A | 2016-12-15 |
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