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    METHODS AND APPARATUS FOR RAPID AND COST EFFECTIVE TESTING OF WIRELESS SYSTEMS
    1.
    发明申请
    METHODS AND APPARATUS FOR RAPID AND COST EFFECTIVE TESTING OF WIRELESS SYSTEMS 审中-公开
    无线系统快速有效测试的方法与装置

    公开(公告)号：US20140177459A1

    公开(公告)日：2014-06-26

    申请号：US13725801

    申请日：2012-12-21

    申请人： APPLE INC.

    发明人： Alf O. Watt ,  David B. Cheung ,  Camille Chen ,  Lei Li ,  Hsin-Yao Chen

    IPC分类号： H04W24/00

    CPC分类号： H04B17/14 ,  H04L41/0806 ,  H04L43/50

    摘要： Apparatus and methods for rapid, cost effective testing of wireless systems. In one embodiment, a unit under test (UUT) is tested by a test “server”. The UUT and test server communicate via a “connectionless” protocol which is based on beacons (and beacon responses) which can carry one or more test primitives. The aforementioned “connection-less” test protocol can be performed without wireless network configuration, which greatly reduces test time, Additionally, exemplary solutions are presented for “lock-up” of the UUT and the test server.

    摘要翻译： 无线系统快速，经济高效测试的装置和方法。 在一个实施例中，被测单元（UUT）由测试“服务器”测试。 UUT和测试服务器通过基于可携带一个或多个测试原语的信标（和信标响应）的“无连接”协议进行通信。 上述“无连接”测试协议可以在没有无线网络配置的情况下执行，这大大减少了测试时间。另外，呈现了UUT和测试服务器的“锁定”的示例性解决方案。

    SYNCHRONIZED WIRELESS AND VIDEO OPERATIONS
    2.
    发明申请
    SYNCHRONIZED WIRELESS AND VIDEO OPERATIONS 审中-公开

    公开(公告)号：US20200068002A1

    公开(公告)日：2020-02-27

    申请号：US16111184

    申请日：2018-08-23

    申请人： Apple Inc.

    发明人： David B. Cheung

    IPC分类号： H04L29/06 ,  H04N19/164

    摘要： Methods and systems are disclosed for joint scheduling of wireless and video activities. Video data may be accessed to estimate an encoding time interval for the video data, identify a per-frame display duration for the video data, and to define a non-encoding time interval. A schedule may be generated for a set of network-calibration events that indicates, for each network-calibration event of the set of network-calibration events. Streaming of the video data to a display device may be initiated such that for each frame of a set of frames represented in the video data: the frame is encoded, transmitted, and the set of network-calibration events is initiated according to the schedule. Each of the network-calibration event being configured to be initiated during a non-encoding time interval during which none of the set of frames are being encoded.

    Device, system, and method for coexistence based frequency hopping
    3.
    发明授权
    Device, system, and method for coexistence based frequency hopping 有权

    公开(公告)号：US10128902B1

    公开(公告)日：2018-11-13

    申请号：US15698766

    申请日：2017-09-08

    申请人： APPLE INC.

    发明人： David B. Cheung ,  Paul Flynn

    IPC分类号： H04B7/06 ,  H04B1/715 ,  H04B7/08 ,  H04W76/15

    摘要： Devices, systems, and methods utilize coexistence-based frequency hopping. Methods are performed at a user equipment including an antenna arrangement comprising a first plurality of antennas configured for use with a first connection and a second plurality of antennas configured for use with a second connection. The methods include determining, for each of a plurality of combinations of one of the first antennas and one of the second antennas, an individual expected interference limiting a number of usable channels for the first connection. The methods include determining a combined expected interference based at least in part on at least one of the individual expected interferences. The methods also include selecting, based at least in part on the combined expected interference, an operational antenna of the first plurality of antennas for communication associated with the first connection.

    Synchronized wireless and video operations
    5.
    发明授权
    Synchronized wireless and video operations 有权

    公开(公告)号：US10911514B2

    公开(公告)日：2021-02-02

    申请号：US16111184

    申请日：2018-08-23

    申请人： Apple Inc.

    发明人： David B. Cheung

    IPC分类号： H04L29/06 ,  H04N19/164

    摘要： Methods and systems are disclosed for joint scheduling of wireless and video activities. Video data may be accessed to estimate an encoding time interval for the video data, identify a per-frame display duration for the video data, and to define a non-encoding time interval. A schedule may be generated for a set of network-calibration events that indicates, for each network-calibration event of the set of network-calibration events. Streaming of the video data to a display device may be initiated such that for each frame of a set of frames represented in the video data: the frame is encoded, transmitted, and the set of network-calibration events is initiated according to the schedule. Each of the network-calibration event being configured to be initiated during a non-encoding time interval during which none of the set of frames are being encoded.

    Non-Line-of-Sight Detection
    7.
    发明申请
    Non-Line-of-Sight Detection 有权

    公开(公告)号：US20210075526A1

    公开(公告)日：2021-03-11

    申请号：US16562777

    申请日：2019-09-06

    申请人： Apple Inc.

    发明人： Ioannis Pefkianakis ,  Weiping Dou ,  David B. Cheung ,  Ye Sun ,  Faraz Faheem

    IPC分类号： H04B17/336 ,  H04B17/17 ,  H04B17/00 ,  H04L5/00 ,  H04L1/00

    摘要： A wireless device can perform non-line-of-sight detection. The wireless device may establish a wireless link with another wireless device using a wireless channel. The wireless device may perform one or more channel measurements for the wireless channel. The wireless device may determine whether a line-of-sight path is available for the wireless channel based at least in part on the one or more channel measurements. The wireless device may determine whether to trigger beamforming selection, antenna selection, and/or any other link maintenance operations based at least in part on the determined line-of-sight availability.