Invention Grant
- Patent Title: Voice rat selection in multi-SIM devices
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Application No.: US15590518Application Date: 2017-05-09
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Publication No.: US10219132B2Publication Date: 2019-02-26
- Inventor: Ashutosh Gupta , Amandeep Singh Bedi , Rajendra Prasad Katakam , Ankit Banaudha , Harinath Reddy Patel
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Paradice and Li LLP
- Main IPC: H04W4/00
- IPC: H04W4/00 ; H04W4/60 ; H04L29/12

Abstract:
Apparatuses and methods for a wireless communication device having multiple Subscriber Identity Modules (SIMs) in which a first SIM is associated with an Internet Protocol (IP) Multimedia Subsystem (IMS) subscription used for IMS services. The method includes but not limited to, attaching the IMS subscription to a first cell of a packet-switched cellular network, determining a cause of IMS voice service being not currently available at the IMS subscription, determining availability of a wireless local area network (WLAN) connection at the IMS subscription, and providing voice service at the IMS subscription based on the cause of IMS voice service being not currently available and the availability of the WLAN connection at the IMS subscription.
Public/Granted literature
- US20180332428A1 VOICE RAT SELECTION IN MULTI-SIM DEVICES Public/Granted day:2018-11-15
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