Invention Grant
- Patent Title: Techniques for improving VoNR-to-VoLTE fallback
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Application No.: US16594374Application Date: 2019-10-07
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Publication No.: US11190993B2Publication Date: 2021-11-30
- Inventor: Yongsheng Shi , Xipeng Zhu , Haris Zisimopoulos , Kirankumar Bhoja Anchan , Lenaig Genevieve Chaponniere , Shanshan Wang , Arvind Vardarajan Santhanam , Mona Agrawal , Aziz Gholmieh , Tom Chin
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Patterson + Sheridan, L.L.P.
- Main IPC: H04W36/00
- IPC: H04W36/00 ; H04W36/14 ; H04W48/16 ; H04L29/06

Abstract:
Certain aspects of the present disclosure relate to methods and apparatus for improving voice over new radio (VoNR)-to-voice over long term evolution (VoLTE). An example method generally includes communicating with and camping on a next generation node B (gNB) in a 5G new radio (NR) system; initiating a voice call with the gNB; receiving a 5G NR-to-long term evolution (LTE) handover command in response to initiating the voice call; performing a handover procedure in response to the handover command; detecting a failure in the handover procedure; and taking one or more actions in response to detecting the failure in the handover procedure.
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