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:
May. 07, 2002
Filed:
Aug. 10, 2000
James E. Beckman, Boulder, CO (US);
David J. Hoover, Cary, NC (US);
Ericsson Inc., Research Triangle Park, NC (US);
Abstract
The present invention provides a new method for determining the point at which the mobile station is required to transmit a periodic registration to the base station when the mobile station is locked onto a DAMPS Digital Control Channel. The REGID system clock in the mobile station is replaced with a timing mechanism termed REGID_PER_TMR. Instead of tracking the REGID system clock from zero to NXTREG, REGID_PER_TMR is a function of the NXTREG permanent variable and the REGID_PER variable transmitted in the Registration Parameters FBCCH message. Thus, REGID_PER_TMR is calculated as a specific time period as a function of NXTREG and REGID_PER on power up of the mobile station and does not need to be stored within the memory of the mobile station. REGID_PER_TMR then functions as a countdown timer relative to NXTREG such that the mobile station automatically executes Periodic Registration Determination per IS 136.1, Section 6.3.9 on expiration of REGID_PER_TMR. Since the REGID system clock has been eliminated, the value of REGID is calculated on an as-needed basis from other parameters.