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:
Jul. 02, 2002
Filed:
Aug. 27, 1999
Kenichi Kato, Shizuoka, JP;
NEC Corporation, Tokyo, JP;
Abstract
The present invention provides a PHS mobile radio station, which can efficiently attain resynchronization when the wave interference between radio control signals sent from base stations (BS) occurs and no synchronization therebetween cannot be established. The PHS mobile radio station of the present invention has a memory unit for latching the time difference between the transmission times of control signals through logical control channels respectively corresponding to two control frequencies. During this mobile radio station receives control signals in synchronization with the logical control channel (LCCH) corresponding to one of the two control frequencies, if an abnormality in the LCCH synchronization state occurs owing to wave interference, the mobile radio station controls a timing generation unit and a frequency changing unit according to information memorized in the memory unit so that the reception of control signals is synchronized with the logical control channel corresponding to the other control frequency. Thus, this PHS mobile radio station, which can efficiently attain resynchronization.