Invention Grant
- Patent Title: WLAN to cellular handover techniques for voice calls
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Application No.: US17959957Application Date: 2022-10-04
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Publication No.: US11963060B2Publication Date: 2024-04-16
- Inventor: Yifan Zhu , Vijay Venkataraman , Viswanath Nagarajan , Sang Ho Baek , Lakshmi N. Kavuri , Utkarsh Kumar , Krisztian Kiss , Shivani Suresh Babu , Srinivasan Nimmala
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Kowert, Hood, Munyon, Rankin & Goetzel, P.C.
- Main IPC: H04W36/14
- IPC: H04W36/14 ; H04B17/318 ; H04L43/0829 ; H04L65/1016 ; H04L65/1073 ; H04W36/30 ; H04W84/04 ; H04W84/12

Abstract:
Techniques are disclosed relating to handover of WLAN voice calls to one or more cellular networks. In some embodiments, a device is configured to perform voice communications over one or more wireless local area networks, communicate with a first network using a first cellular radio access technology (RAT), and communicate with a second network using a second cellular RAT. The device may store, based on communications via the first network, information indicating that the first network does not support voice communications for the apparatus. The device may handover a voice call from a wireless local network directly to the second cellular RAT, based on the stored information and without handover of the voice call to the first cellular RAT, based on call conditions on the wireless local area network.
Public/Granted literature
- US20230023828A1 WLAN to Cellular Handover Techniques for Voice Calls Public/Granted day:2023-01-26
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