Mobile device with improved network selection while roaming
    22.
    发明授权
    Mobile device with improved network selection while roaming 有权
    移动设备在漫游时具有改进的网络选择

    公开(公告)号:US09525995B2

    公开(公告)日:2016-12-20

    申请号:US14732765

    申请日:2015-06-07

    Applicant: Apple Inc.

    CPC classification number: H04W8/065 H04W48/16 H04W60/005 H04W60/02 H04W88/06

    Abstract: Apparatuses, systems, and methods for user equipment (UE) devices to perform a radio access technology (RAT) upgrade. A UE may initiate a background scan to upgrade RAT while camped on a first system in response to an occurrence of a first condition. The first system may include a first PLMN that operates according a first RAT. The UE may determine a second system operates according to a second RAT that provides upgraded service as compared to the first RAT. The second system may be included in one or more systems found during the background scan. The UE may attempt to register on the second system based on the second PLMN operating according to the second RAT. The first and second PLMNs may each have an associated operator preference and the first PLMN may be preferred over the second PLMN.

    Abstract translation: 用于用户设备(UE)设备执行无线电接入技术(RAT)升级的设备,系统和方法。 响应于第一状况的发生,UE可以启动后台扫描以升级RAT,同时驻留在第一系统上。 第一系统可以包括根据第一RAT操作的第一PLMN。 UE可以根据与第一RAT相比提供升级服务的第二RAT来确定第二系统操作。 第二系统可以被包括在在后台扫描期间发现的一个或多个系统中。 UE可以基于根据第二RAT操作的第二PLMN来尝试在第二系统上注册。 第一和第二PLMN可以各自具有相关联的运营商偏好,并且第一PLMN可以优于第二PLMN。

    Imbalance compensation for uplink (UL)—multiple-input and multiple-output (MIMO) transmissions

    公开(公告)号:US12250033B2

    公开(公告)日:2025-03-11

    申请号:US18544802

    申请日:2023-12-19

    Applicant: Apple Inc.

    Abstract: Systems, methods, and apparatuses disclosed herein can compensate for imbalances between multiple transport streams of an uplink (UL)-multiple-input and multiple-output (MIMO) transmission. These systems, methods, and apparatuses can adjust one or more signal metrics of multiple recovered transport streams of the UL-MIMO transmission that are received in the presence of imbalances between the multiple transport streams of the UL-MIMO transmission. As an example, these systems, methods, and apparatuses can inject noise into one or more of the multiple recovered transport streams to adjust the one or more signal metrics of the multiple recovered transmission streams to lessen the imbalances between the multiple transmission streams.

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