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:
Apr. 22, 2014
Filed:
Feb. 10, 2010
Venkatasubramanian Ramasamy, San Jose, CA (US);
Giri Prassad Deivasigamani, San Jose, CA (US);
Srinivasan Vasudevan, Sunnyvale, CA (US);
Mohit Narang, Cupertino, CA (US);
Longda Xing, San Jose, CA (US);
Venkatasubramanian Ramasamy, San Jose, CA (US);
Giri Prassad Deivasigamani, San Jose, CA (US);
Srinivasan Vasudevan, Sunnyvale, CA (US);
Mohit Narang, Cupertino, CA (US);
Longda Xing, San Jose, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
User equipment such as cellular telephones and other wireless electronic devices may communicate wirelessly with 2G and 3G cells in a cellular network. The cellular network may broadcast a list of primary scrambling codes corresponding to 3G cell sites that are potentially available for wirelessly communicating with the user equipment. The user equipment may perform an evaluation of primary scrambling code pilot signal strengths for each of the primary scrambling codes in the list. The user equipment may also maintain a record whenever a more extensive full primary scrambling code scan fails. If the evaluation reveals that at least one signal strength is sufficient, the cellular telephone may establish a corresponding 3G wireless link. If the evaluation does not identify any sufficiently strong 3G cells, a full pilot signal scan may be performed, provided that no full scans have failed within a predetermined time interval before the current time.