公开(公告)号：US11576224B2

公开(公告)日：2023-02-07

申请号：US17084159

申请日：2020-10-29

Applicant: GM Global Technology Operations LLC

Inventor： Jaswanth Krishna Aavula ,  Charles A Everhart ,  Sitaram Emani ,  Vishnu Chikondla

IPC: H04W4/40 ,  H04W36/34 ,  H04W8/18 ,  H04L65/1016 ,  H04L12/28 ,  H04M3/42 ,  H04W76/18 ,  H04M7/00 ,  H04L67/12

Abstract: A method of operating a mobile communication system of a motor vehicle is provided for initiating a voice call with a third party. The system includes an ECU, and the ECU includes a controller and a memory storing computer code. The method includes the steps of: (a) initiating a timer; (b) operating the ECU in a first mode in which the ECU attempts to engage in a VoNR call via a first network; (c) repeating step (b) within a predetermined amount of time until the ECU successfully engages in the VoNR call; and (d) operating the ECU in a second mode to attempt to engage in a VoLTE call via a second network in response to the controller determining that the ECU in the first mode did not successfully engage in the VoNR call within a predetermined amount of time.

公开(公告)号：US20220141906A1

公开(公告)日：2022-05-05

申请号：US17084159

申请日：2020-10-29

Applicant: GM Global Technology Operations LLC

Inventor： Jaswanth Krishna Aavula ,  Charles A. Everhart ,  Sitaram Emani ,  Vishnu Chikondla

IPC: H04W76/18 ,  H04W4/40 ,  H04M7/00

Abstract: A method of operating a mobile communication system of a motor vehicle is provided for initiating a voice call with a third party. The system includes an ECU, and the ECU includes a controller and a memory storing computer code. The method includes the steps of: (a) initiating a timer; (b) operating the ECU in a first mode in which the ECU attempts to engage in a VoNR call via a first network; (c) repeating step (b) within a predetermined amount of time until the ECU successfully engages in the VoNR call; and (d) operating the ECU in a second mode to attempt to engage in a VoLTE call via a second network in response to the controller determining that the ECU in the first mode did not successfully engage in the VoNR call within a predetermined amount of time.