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. 11, 2000
Filed:
Sep. 29, 1996
Rod Averbuch, Buffalo Grove, IL (US);
Karen A Brailean, Park Ridge, IL (US);
Jeffrey J Blanchette, Palatine, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
In a wireless communication system, session timers are separately maintained by a communication device (101) and a system controller (104). When a portion of outbound data is sent to a base station (102) for transmission to the communication device, the base station creates at least one transmission time stamp which is then sent to the system controller (203). If a session has not been previously established, the system controller uses the at least one transmission time stamp to establish a session and initiate a session timer (204). If a session has been previously established, the system controller uses the at least one transmission time stamp to determine whether to continue the current session timer (709). This applies to inbound data as well. Furthermore, session timers can also be synchronized to paging acknowledgments (305), channel information messages (503) or channel access messages (602). In this manner, session timers are more accurately synchronized.