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:
Nov. 19, 1991
Filed:
Mar. 11, 1988
Minori Kawano, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A method and apparatus for a hand-off of a call-in-progress according to the present invention is arranged such that both a first ratio of a length of time, in which a measured value of SNR is below a predetermined 'threshold' to a total length of the measuring time, and a second ratio of a length of time, in which a measured value of RSSI is below a predetermined 'threshold', to a total length of the measuring time are detected and that the first ratio functions mainly when the 'threshold' of RSSI is predetermined to a relatively low value; and the second ratio functions mainly when the 'threshold' of RSSI is predetermined to a relatively high value, thereby optimizing the hand-off timing.