Invention Grant
- Patent Title: Method and apparatus for handling circuit switched calls at a user equipment
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Application No.: US15956441Application Date: 2018-04-18
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Publication No.: US10736000B2Publication Date: 2020-08-04
- Inventor: Hamid Syed Mahmood , Mathurin Wadjeu
- Applicant: BlackBerry Limited
- Applicant Address: CA Waterloo
- Assignee: BlackBerry Limited
- Current Assignee: BlackBerry Limited
- Current Assignee Address: CA Waterloo
- Agency: Moffat & Co
- Main IPC: H04W36/00
- IPC: H04W36/00 ; H04W60/00 ; H04W36/14 ; H04W60/04 ; H04W48/18 ; H04W88/06 ; H04W76/18 ; H04W76/16 ; H04W76/19
Abstract:
A method at a user equipment including detecting that a circuit switched (CS) call has been requested at the user equipment; if a most recent registration attempt or registration update attempt with a network of a first radio access technology (RAT) resulted in an abnormal state, registering with a network of a second RAT; and initiating the CS call with the network of the second RAT.
Public/Granted literature
- US20180242203A1 METHOD AND APPARATUS FOR HANDLING CIRCUIT SWITCHED CALLS AT A USER EQUIPMENT Public/Granted day:2018-08-23
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