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. 29, 2009
Filed:
Jan. 18, 2006
Stanislaw Czaja, Cardiff, CA (US);
Kraig Lamar Anderson, San Diego, CA (US);
Hong Kui Yang, San Diego, CA (US);
Stanislaw Czaja, Cardiff, CA (US);
Kraig Lamar Anderson, San Diego, CA (US);
Hong Kui Yang, San Diego, CA (US);
VIA Telecom Co., Ltd., San Diego, CA (US);
Abstract
A novel method and apparatus for initiating a reverse link intergenerational handoff in a CDMA communication system is disclosed. The inventive reverse link intergenerational handoff initialization method and apparatus measures and compares parameters between a serving base station of one generation and a target base station of another generation to determine the best possible handoff initiation time instant for performing a reverse link intergenerational hard handoff. The method and apparatus can utilize one of several embodiments to determine the best possible handoff initiation time instant. A pilot signal strength embodiment determines a handoff initiation time instant based upon the total pilot signal strength of both a serving and target base station. The E/Nembodiment determines a handoff initiation time instant based upon E/N(ratio of average power per bit to total received power spectral density) values of both a serving and a target base station. The disclosed method and apparatus decreases the probability of degraded or dropped calls during intergenerational handoffs.