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    Method for returning from low-standard network to high-standard network and communications apparatus
    12.
    发明授权
    Method for returning from low-standard network to high-standard network and communications apparatus 有权

    公开(公告)号：US11589280B2

    公开(公告)日：2023-02-21

    申请号：US16976679

    申请日：2018-03-27

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Zhenrong Wei ,  Hao Song ,  Shujun Dang ,  Caihua Huang

    IPC: H04W36/14 ,  H04W8/18 ,  H04W88/06

    Abstract: This application provides a method for returning from a low-standard network to a high-standard network, to resolve a problem that a primary card of a terminal device in dual SIM dual standby single pass mode cannot return to the high-standard network after falling back from the high-standard network to the low-standard network during a data service. The method includes: detecting that a first subscriber identification module SIM card of the terminal device falls back from a first-standard network to a second-standard network; obtaining a registration status of a second SIM card, where the registration status includes an operator of the second SIM card and a network on which the second SIM card camps, and the first SIM card and the second SIM card enable the terminal device to work in the dual SIM dual standby single pass mode; obtaining a target standard network based on the registration status of the second SIM card; and registering the first SIM card with the target standard network.

    Method for selecting target cell and terminal
    16.
    发明授权
    Method for selecting target cell and terminal 有权

    公开(公告)号：US09807666B2

    公开(公告)日：2017-10-31

    申请号：US14901800

    申请日：2014-10-20

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Shujun Dang

    IPC: H04W36/30 ,  H04W36/08 ,  H04W48/16

    CPC classification number: H04W36/30 ,  H04W24/10 ,  H04W36/08 ,  H04W36/245 ,  H04W48/16 ,  H04W48/18

    Abstract: Embodiments of the present invention disclose a method for selecting a target cell and a terminal, comprising: acquiring, by a terminal, signal strengths of a serving cell and signal strengths of neighboring cells according to a predetermined time period; determining a candidate target cell set, where the candidate target cell set includes neighboring cells whose first strength parameters are greater than a first strength parameter of the serving cell at a specific moment; detecting signal change trends, which are within a predetermined time length before the specific moment, of the neighboring cells in the candidate target cell set; determining that a neighboring cell in a set of neighboring cells whose signal change trends satisfy a first state in the candidate target cell set is a target cell, where the first state is a stable trend and/or an ascending trend; and reselecting the target cell as a serving cell.

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