公开(公告)号：US20220337992A1

公开(公告)日：2022-10-20

申请号：US17762012

申请日：2020-09-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Fusheng Shen ,  Yuwei Fan ,  Binjun Liu

IPC: H04W8/18 ,  H04W24/08

Abstract: An objective of this application is to provide a SIM card switching method and apparatus, and an electronic device, so that the electronic device can quickly and accurately perform SIM card switching. The electronic device comprehensively determines, based on a use status of a radio frequency and a network connection status, whether a SIM card needs to be switched. When the radio frequency is used by a specific service, a network connection is temporarily abnormal. However, this temporarily abnormal network connection does not affect operation experience of a user. In this case, if the SIM card is switched, traffic of the SIM card is wasted, and time consumption during SIM card switching also increases a user operation delay. Consequently, determining whether to switch the SIM card only based on the network connection causes incorrect SIM card switching. In this application, incorrect SIM card switching can be avoided.

公开(公告)号：US11895215B2

公开(公告)日：2024-02-06

申请号：US17910711

申请日：2021-03-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Binjun Liu ,  Yuwei Fan ,  Fusheng Shen ,  Weichen Zhu ,  Lixin Lin ,  Ying Zhu

IPC: H04L61/4511 ,  H04L69/167 ,  H04L101/659

CPC classification number: H04L69/167 ,  H04L61/4511 ,  H04L2101/659

Abstract: The present disclosure relates to application server access methods and terminals. One example method includes in response to a terminal failing to connect to an application server by using an IPv6 address, setting an accessed domain name to a restricted domain name, and, when the accessed domain name is re-accessed later, connecting to the application server by directly using an IPv4 address.

公开(公告)号：US20230199602A1

公开(公告)日：2023-06-22

申请号：US17926168

申请日：2021-05-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yong Li ,  Hai Lian ,  Yuwei Fan

IPC: H04W36/30 ,  H04W36/00

CPC classification number: H04W36/305 ,  H04W36/0069 ,  H04W36/0058

Abstract: This application relates to the field of mobile communications, and discloses a terminal network connection control method, and a medium and a chip therefor. The control method in this application includes: A terminal detects that link quality of a data link of the terminal does not meet a specified quality condition. The terminal disconnects from a 4G network in an access network when the terminal does not activate a dual connectivity function and is not in a call state, and the terminal re-requests to connect to a 5G network and the 4G network in the access network when the terminal generates a data service requirement or when signaling triggers connection establishment. The terminal disconnects from a 5G network in a first 5G serving cell when the terminal activates a dual connectivity function, and re-establishes a connection to the 5G network in a second 5G serving cell.

公开(公告)号：US20220345955A1

公开(公告)日：2022-10-27

申请号：US17761528

申请日：2020-07-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lixin Lin ,  Yuwei Fan ,  Fengguang Qiu

IPC: H04W36/00 ,  H04W36/30

Abstract: A network handover method and a terminal device, the method including obtaining, by a terminal device, a link quality parameter of a data link of the terminal device, determining that a 5G system accessed by the terminal device is unavailable in response to the link quality parameter meeting a specified condition, and handing over from the 5G system to a non-5G system in response to the 5G system being unavailable, where the link quality parameter includes quantities of uplink and downlink data packets received in a duration, and here the specified condition comprises the quantity of downlink data packets received in the duration by exceeding a first threshold and a quantity of sent uplink data packets being 0, or a quantity of uplink data packets sent in the duration exceeding a second threshold and the quantity of received downlink data packets being 0.

公开(公告)号：US12177732B2

公开(公告)日：2024-12-24

申请号：US17761528

申请日：2020-07-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lixin Lin ,  Yuwei Fan ,  Fengguang Qiu

IPC: H04W36/00 ,  H04W36/14 ,  H04W36/30 ,  H04W36/36

Abstract: A network handover method and a terminal device, the method including obtaining, by a terminal device, a link quality parameter of a data link of the terminal device, determining that a 5G system accessed by the terminal device is unavailable in response to the link quality parameter meeting a specified condition, and handing over from the 5G system to a non-5G system in response to the 5G system being unavailable, where the link quality parameter includes quantities of uplink and downlink data packets received in a duration, and here the specified condition comprises the quantity of downlink data packets received in the duration by exceeding a first threshold and a quantity of sent uplink data packets being 0, or a quantity of uplink data packets sent in the duration exceeding a second threshold and the quantity of received downlink data packets being 0.

公开(公告)号：US20230319189A1

公开(公告)日：2023-10-05

申请号：US18015373

申请日：2021-07-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Weilin Gong ,  Jingjing Yao ,  Yuwei Fan ,  Hai Lian ,  Yinyuan Jia

IPC: H04M7/00

CPC classification number: H04M7/0075

Abstract: This application discloses a call method and system, and a related apparatus. When a specific condition is met (for example, a callee fails to be paged), a network device forwards, to a VoIP server, a first call request to a target number, where the first call request is a call request initiated by a calling terminal to the target number, and the target number has been subscribed to a call forwarding service. Then the VoIP server parses a forwarding message from the network device to obtain a called number, searches, based on the called number, for the called terminal associated with the called number, and initiates a VoIP call to the called terminal, so that the callee in an out-of-service state (for example, there is no signal of an operator network or the callee is in an airplane mode) can still receive the call request from the caller.

公开(公告)号：US10652389B2

公开(公告)日：2020-05-12

申请号：US16474796

申请日：2016-12-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhenzhong Zhang ,  Yuwei Fan

IPC: H04M3/428

Abstract: A call hold method includes receiving a call hold request sent from a peer end; returning a 200 OK message to the peer end; receiving a user instruction for sending a call hold request to the peer end; determining whether an acknowledgement message based on the call hold request of the peer end is received from the peer end; and processing, based on an acknowledgement message determining result, the user instruction for sending a call hold request to the peer end. Accordingly, when a user has a call hold request, a mobile terminal first determines whether a procedure based on the call hold request of the peer end is completed at the peer end, and then determines to process the call hold request of the user, thereby preventing a call drop.