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:
Jul. 02, 2013
Filed:
May. 03, 2010
Francesco Grilli, San Diego, CA (US);
Charles E. Wheatley, Iii, San Diego, CA (US);
Serge Willenegger, Onnens, SE;
Parvathanathan Subrahmanya, Sunnyvale, CA (US);
Francesco Grilli, San Diego, CA (US);
Charles E. Wheatley, III, San Diego, CA (US);
Serge Willenegger, Onnens, SE;
Parvathanathan Subrahmanya, Sunnyvale, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Schemes to time-align transmissions from multiple base stations to a terminal. To achieve time-alignment, differences between the arrival times of transmissions from the base stations, as observed at the terminal, are determined and provided to the system and used to adjust the timing at the base stations such that terminal-specific radio frames arrive at the terminal within a particular time window. In one scheme, a time difference between two base stations is partitioned into a frame-level time difference and a chip-level time difference. Whenever requested to perform and report time difference measurements, the terminal measures the chip-level timing for each candidate base station relative to a reference base station. Additionally, the terminal also measures the frame-level timing and includes this information in the time difference measurement only if required. Otherwise, the terminal sets the frame-level part to a predetermined value (e.g., zero).