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:
Jan. 19, 2010
Filed:
Dec. 03, 2004
Junichi Matsuda, Minato-ku, JP;
Akihisa Kurashima, Minato-ku, JP;
Junichi Matsuda, Minato-ku, JP;
Akihisa Kurashima, Minato-ku, JP;
NEC Corporation, Tokyo, JP;
Abstract
The propagation time () of signals between a terminal () and a base station () is calculated from the round-trip time () of signals between the terminal () and the base station () and the turn-around time () from the reception by terminal () of a signal from base station () until the transmission of the signal to the base station (). The propagation time () of signals between the terminal () and another base station () is similarly calculated. The difference between the propagation times (and) and the arrival time difference () that is calculated in the terminal () are then compared to calculate the transmission time difference () between the base stations (and).