公开(公告)号：US11576024B2

公开(公告)日：2023-02-07

申请号：US17261813

申请日：2019-08-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ming Ding ,  Fenghui Dou ,  Jie Wu

IPC: H04W4/90 ,  H04W76/50 ,  H04W4/02 ,  H04W84/12

Abstract: This application provides a method and an apparatus for making an emergency call. The method includes: obtaining location information of UE; determining, based on the local information, whether the UE is located in a home country of an HPLMN of the UE; and when the UE is located in the home country of the HPLMN, if a predetermined condition is satisfied, initiating a VoWiFi emergency call by using an IMS APN of the HPLMN, where the predetermined condition includes: the UE has completed IMS registration, and a PLMN on which the UE camps includes no emergency APN. According to the method and apparatus for making an emergency call provided in this application, a VoWiFi emergency call success rate can be increased to some extent.

公开(公告)号：US10959278B2

公开(公告)日：2021-03-23

申请号：US16487253

申请日：2017-06-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kai Yuan ,  Fenghui Dou ,  Ming Ding ,  Hui Jin

IPC: H04W76/18 ,  H04W76/25 ,  H04W76/30 ,  H04W4/12

Abstract: A call setup method and associated apparatus discloses sending a first message to a network device, wherein the first message is used by the electronic device to request to set up an outgoing call; receiving a second message sent by the network device, wherein the second message is used by the electronic device to set up an incoming call; caching the second message when the electronic device is in a call initiation state; releasing the outgoing call based on an indication message received from the network device and setting up the incoming call.