US Patent No. 10,798,752


Patent No. 10,798,752
Issue Date October 06, 2020
Title Method And Device For Executing Emergency Call
Inventorship Hui Jin, Beijing (CN)
Bo Zhang, Beijing (CN)
Xianglei Xin, Shenzhen (CN)
Lei Fu, Beijing (CN)
Xiaoyan Duan, Beijing (CN)
Assignee Huawei Technologies Co., Ltd., Shenzhen (CN)

Claim of US Patent No. 10,798,752

1. A method for executing an emergency call, the method comprising:receiving an emergency call request;
initiating, according to the emergency call request, emergency calls according to the emergency call request simultaneously, wherein the emergency calls includes a first emergency call and a second emergency call, the first and emergency call being initiated on a first communications network and the second emergency call being initiated on a second communications network, the first communications network being separate and distinct from the second communications network;
establishing a network connection for at least one of the emergency calls; and
releasing the other emergency calls for which no network connection has been established; and, wherein initiating n emergency calls simultaneously comprises:
initiating each emergency call using a respective underlying protocol stack; and
establishing the connection for one of the emergency calls comprises:
when answering responses of at least two of the n emergency calls are received, determining a corresponding underlying protocol stack according to preset priorities, and establishing the connection using the determined underlying protocol stack.