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:
Jun. 07, 2022
Filed:
May. 11, 2017
Apple Inc., Cupertino, CA (US);
Gahima S. Mbonye, San Jose, CA (US);
Vijay Venkataraman, San Jose, CA (US);
Srinivasan Nimmala, San Jose, CA (US);
Thanigaivelu Elangovan, Cupertino, CA (US);
Abdul-Munem Ai-Khudairi, Oakville, CA (US);
Anish K. Goyal, Milpitas, CA (US);
Rafael L. Rivera-Barreto, Santa Clara, CA (US);
Yifan Zhu, San Jose, CA (US);
Ryan Booth, San Jose, CA (US);
Lakshmi Kavuri, Cupertino, CA (US);
Venkateswara Rao Manepalli, San Jose, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
A method performed by a station that includes receiving information from a cell of a Public Land Mobile Network (PLMN), determining whether the information indicates the cell supports circuit switched fallback (CSFB) voice calls, when the CSFB voice calls are not supported, determining whether at least one packet switched voice property of the station satisfies a predetermined condition and attaching to the cell of the PLMN when the predetermined condition is satisfied. A further method performed by a station connected to a PLMN that includes identifying cells of the PLMN available for the station to camp on, determining whether the station is capable of executing packet switched calls, when the station is not capable of executing packet switched calls, determining whether the identified cells have a neighbor cell that supports CSFB voice calls and prioritizing the cells that are identified as having neighbor cells that support CSFB voice calls.