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:
Oct. 08, 2002
Filed:
Sep. 29, 1997
John R. Sorenson, San Diego, CA (US);
Jan C. Ault, Santee, CA (US);
James A. Hutchison, IV, San Diego, CA (US);
Qualcomm Incorporated, San Diego, CA (US);
Abstract
A wireless communication device automatically and seamlessly switches to an alternate, available system when it is unable to complete a call origination attempt, without requiring the user to take any affirmative actions to select the alternate system. The wireless communication device stores a list of preferred communication systems. The mobile station attempts to acquire one of these preferred communication systems upon failure of the reverse link. If that is not successful, the mobile station attempts to acquire a communication system most likely to provide service. If that is also not successful, the mobile station re-attempts acquisition of the current communication system. The mobile station also re-attempts acquisition with one of the preferred communication systems after a predetermined idle time.