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. 15, 2021
Filed:
Feb. 26, 2020
Apple Inc., Cupertino, CA (US);
Sweta B. Desai, San Jose, CA (US);
Abhishek Walia, New York, NY (US);
Ajoy K. Singh, Milpitas, CA (US);
Bhanu Prasad Pamidi, San Jose, CA (US);
Rohit Thareja, Pacifica, CA (US);
Sharad Garg, Cupertino, CA (US);
Vijay Gadde, San Jose, CA (US);
Vijendrakumar K. Ashiwal, San Jose, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Apparatuses, systems, and methods for enhancement of Wi-Fi calling for DSDS user equipment devices (UEs). The UE may register a first connection supported by a first SIM with IMS for VoWiFi based on a determination to prefer VoWiFi for the first SIM. The first SIM may be associated with a first subscription to a first RAN. The UE may include a second SIM that may be associated with a second subscription to a second RAN. The UE may register a second connection associated with the second SIM with the IMS for VoWiFi and/or VoLTE and initiate/receive, via the first connection supported by the first SIM, a VoWiFi call. A recommendation to handover the VoWiFi call from Wi-Fi to cellular data may be received and, based, at least in part, on the recommendation, the UE may register a second connection associated with the second SIM for IWLAN over cellular data.