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:
Feb. 15, 2005
Filed:
Apr. 11, 2003
Siddhartha Ray Chaudhuri, San Diego, CA (US);
Chih-ping Hsu, San Diego, CA (US);
Chalapathi Rao Emani, San Diego, CA (US);
Jeremy H. Lin, San Diego, CA (US);
Gurdeep Singh, San Diego, CA (US);
Siddhartha Ray Chaudhuri, San Diego, CA (US);
Chih-Ping Hsu, San Diego, CA (US);
Chalapathi Rao Emani, San Diego, CA (US);
Jeremy H. Lin, San Diego, CA (US);
Gurdeep Singh, San Diego, CA (US);
Qualcomm Incorporated, San Diego, CA (US);
Abstract
Various techniques are disclosed for unambiguously determining and tracking frame offset in asynchronous wireless communication user equipment. The user equipment determines the unambiguous connection frame number of a downlink channel. The equipment then determines frame timing information for neighbor cells. The frame timing information for the primary common control physical channel and uplink dedicated physical channels is determined. The frame timing is determined as a coarse resolution frame offset in conjunction with a fine resolution chip offset. The frame numbering information for the uplink and downlink dedicated physical channels and the primary common control physical channel is also determined. Then the frame number and timing information is updated using a counter accurate to one chip resolution. The frame offset is updated if the number of chips underflows or overflows a predetermined window. Frame timing may be updated by updating only the fine chip offset or may be completely determined.