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    5G NR Efficient FR1/FR2 Operation
    72.
    发明申请
    5G NR Efficient FR1/FR2 Operation 有权

    公开(公告)号：US20210385707A1

    公开(公告)日：2021-12-09

    申请号：US17331331

    申请日：2021-05-26

    Applicant: Apple Inc.

    Inventor： Muhammad Saad ,  Syed A. Rahim ,  Sharad Garg ,  Vijay Venkataraman ,  Jia Tang ,  Wenping Lou ,  Thanigaivelu Elangovan ,  Pengkai Zhao ,  Tarakkumar G. Dhanani

    IPC: H04W36/00 ,  H04W24/04 ,  H04W74/08

    Abstract: Apparatuses, systems, and methods for RACH procedures to avoid excessive handover/secondary cell group failures. A base station may declare a handover and/or secondary cell group (SCG) failure and may determine that a failure threshold has been met. The base station may perform a remedial action in response to meeting the failure threshold. The failure threshold may be multi-dimensional, where a first dimension is associated with a number of handover/SCG failures and where a second dimension is associated with a time period in which the number of handover/SCG failures occurred. Further, a third dimension may be associated with a UE mobility state and a fourth dimension may be associated with whether the UE is using FR1 or FR2. The remedial action in response to meeting the failure threshold may include the base station suspending transmission of measurement object configurations for a specified period of time.

    Cellular system selection frequency scan scope
    75.
    发明授权
    Cellular system selection frequency scan scope 有权

    公开(公告)号：US10609600B2

    公开(公告)日：2020-03-31

    申请号：US16372263

    申请日：2019-04-01

    Applicant: Apple Inc.

    Inventor： Jianxiong Shi ,  Lakshmi N. Kavuri ,  Madhusudan Chaudhary ,  Thanigaivelu Elangovan ,  Viswanath Nagarajan ,  Yifan Zhu

    IPC: H04W36/00 ,  H04J11/00 ,  H04W36/32 ,  H04W36/36 ,  H04W48/16 ,  H04W48/18

    Abstract: Apparatuses, systems, and methods for user equipment (UE) devices to perform more efficient frequency scans for potential base stations. According to techniques described herein, the UE may determine that it does not have cellular service and determine first information based on a last camped cell. A time period during which the first information was acquired may be determined and one or more frequency scans may be performed. The frequency scans may be limited to a set of frequencies based in part on the time period. Thus, if the time period is less than a first value, the set of frequencies may include a first set of frequencies and if the time period is greater than the first value but less than a second value, the set of frequencies may include the first set of frequencies and a second set of frequencies.

    Fast Return to Wi-Fi
    77.
    发明申请
    Fast Return to Wi-Fi 审中-公开

    公开(公告)号：US20180332506A1

    公开(公告)日：2018-11-15

    申请号：US15593686

    申请日：2017-05-12

    Applicant: Apple Inc.

    Inventor： Venkateswara Rao Manepalli ,  Paul V. Flynn ,  Artiom Shamis ,  Thanigaivelu Elangovan ,  Vijay Venkataraman ,  Ajoy K. Singh ,  Veerendra Boodannavar

    IPC: H04W36/00 ,  H04W48/16

    CPC classification number: H04W36/0022 ,  H04W48/16 ,  H04W84/12 ,  H04W88/06

    Abstract: Embodiments for performing a fast return to Wi-Fi following completion of a cellular voice call are provided. These embodiments include detecting that a device has switched from communicating over a Wi-Fi interface to communicating over a cellular interface; determining the earliest time that the device can switch back to Wi-Fi; and instituting the switch. In some embodiments, the process of performing a fast return to Wi-Fi is carried out by devices having small form factors, such as smartwatches and other wearables, which may be susceptible to coexistence and peak power problems. The fast return to Wi-Fi embodiments disclosed herein allow a device to perform a voice call over a cellular interface when Wi-Fi calling is not available, and switch over to a Wi-Fi interface immediately upon completion of the voice call in order to conserve battery life, achieve higher data speeds, and avoid high costs associated with cellular data transmissions.

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