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:
Dec. 13, 1994
Filed:
Jun. 28, 1993
Stelios J Patsiokas, Plantation, FL (US);
Kenneth D Alton, Coral Springs, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A method for handset spectrum registration in cordless telephone systems having base stations operating in a first spectrum (102) and a second spectrum (101) where the first and second spectrums have a portion (103) of overlapping spectrum ranges comprises the steps at a handset (206) of scanning (18) the portion of overlapping spectrum ranges provided by a base station which is either a first base station having the first spectrum range or a second base station having the second spectrum and then choosing (20) a channel within the overlapping spectrum ranges substantially free from interference and designating the channel as the initial link establishment channel and as a re-establishment channel for subsequent re-establishment links. The handset then sends (22) a re-establishment link request to the base station to have the base re-establish a link with the re-establishment channel on the handset. Then, the handset determines (24) if the re-establishment channel was for a base station operating in the first spectrum range or a base station operating in the second spectrum range by measuring the amount of time it takes to achieve the re-establishment.