公开(公告)号：US11082854B2

公开(公告)日：2021-08-03

申请号：US16586713

申请日：2019-09-27

Applicant: Apple Inc.

Inventor： Alejandro J. Marquez ,  Dinesh Poopalaratnam ,  Shang-Te Yang ,  Indranil Sen ,  Peiyu Chen

IPC: H04W12/12 ,  H04B17/345 ,  G01S11/06 ,  H04L25/02 ,  H04W76/14 ,  H04B17/336

Abstract: A device implementing signal validation for secure ranging includes at least one processor configured to obtain a channel estimate based at least in part on a signal received from an other device over a channel. The at least one processor may be further configured to determine an average noise level of a beginning portion of the channel estimate and establish a direct path signal acceptance level for the channel estimate based at least in part on the average noise level. The at least one processor may further configured to identify a candidate direct path signal for the channel in a remaining portion of the channel estimate and validate the candidate direct path signal as a direct path signal for the channel when a signal level corresponding to the candidate direct path signal satisfies the direct path signal acceptance level, otherwise reject the candidate direct path signal as the direct path signal for the channel.

公开(公告)号：US09781687B2

公开(公告)日：2017-10-03

申请号：US14282326

申请日：2014-05-20

Applicant: Apple Inc.

Inventor： Indranil Sen ,  Mohit Narang ,  Digvijay Arjunrao Jadhav ,  William S. Burchill ,  Vinay R. Majjigi ,  Paul V. Flynn ,  Wen Zhao ,  Matthew L. Semersky

IPC: H04W52/34 ,  H04W52/36 ,  H04W88/06 ,  H04W88/04 ,  H04W88/12 ,  H04W84/04 ,  H04W84/12

CPC classification number: H04W52/34 ,  H04W52/346 ,  H04W52/367 ,  H04W84/042 ,  H04W84/12 ,  H04W88/06

Abstract: A method for controlling transmission power in accordance with a total transmission power limit in a multi-radio wireless communication device including a master radio and a slave radio is provided. The method can include the wireless communication device determining, at the master radio, a transmission power of the master radio. The method can further include the wireless communication device providing information indicative of the transmission power of the master radio from the master radio to the slave radio. The method can additionally include determining, at the slave radio, an allowable transmission power for the slave radio. A sum of the allowable transmission power and the transmission power of the master radio may not exceed the total transmission power limit.

公开(公告)号：US20150341869A1

公开(公告)日：2015-11-26

申请号：US14282326

申请日：2014-05-20

Applicant: Apple Inc.

Inventor： Indranil Sen ,  Mohit Narang ,  Digvijay Arjunrao Jadhav ,  William S. Burchill ,  Vinay R. Majjigi ,  Paul V. Flynn ,  Wen Zhao ,  Matthew L. Semersky

IPC: H04W52/34

CPC classification number: H04W52/34 ,  H04W52/346 ,  H04W52/367 ,  H04W84/042 ,  H04W84/12 ,  H04W88/06

Abstract: A method for controlling transmission power in accordance with a total transmission power limit in a multi-radio wireless communication device including a master radio and a slave radio is provided. The method can include the wireless communication device determining, at the master radio, a transmission power of the master radio. The method can further include the wireless communication device providing information indicative of the transmission power of the master radio from the master radio to the slave radio. The method can additionally include determining, at the slave radio, an allowable transmission power for the slave radio. A sum of the allowable transmission power and the transmission power of the master radio may not exceed the total transmission power limit.

Abstract translation: 提供了一种用于在包括主无线电和从无线电的多无线电无线通信设备中根据总发射功率限制来控制发射功率的方法。 该方法可以包括无线通信设备在主无线电中确定主无线电的发射功率。 该方法还可以包括无线通信设备，其提供指示主无线电从主无线电到从无线电的发送功率的信息。 该方法还可以包括在从属无线电装置处确定从无线电装置的可允许发射功率。 主无线电的允许发送功率和发送功率的总和可以不超过总发送功率限制。

公开(公告)号：US09190725B2

公开(公告)日：2015-11-17

申请号：US13787515

申请日：2013-03-06

Applicant: Apple Inc.

Inventor： Diego C. Hernandez ,  Indranil Sen ,  Chun-Lung Chen ,  Javier Gomez Tagle

IPC: H04B17/00 ,  H01Q3/26 ,  H04B17/12 ,  H04B17/27

CPC classification number: H01Q3/267 ,  H04B17/12 ,  H04B17/27

Abstract: A test system may include a master test station and slave test stations. The test stations may receive devices under test such as portable wireless electronic devices. Each test station may have adjustable antenna structures coupled to test equipment. The adjustable antenna structures may include antenna support structures on which test antennas are mounted and rail along which the antenna support structures and test antennas are moved by a pneumatic positioner. A rotatable platform may be provided in each test station to support the device under test in that test station. By making a series of over-the-air test measurements in the master test station while adjusting the antenna system and device positioning system, a satisfactory location for the active test antenna and device position may be identified. This configuration may then be used in performing single-point over-the-air tests in the slave test stations.

Abstract translation: 测试系统可以包括主测试站和从站测试站。 测试台可以接收被测设备，如便携式无线电子设备。 每个测试台可以具有耦合到测试设备的可调天线结构。 可调天线结构可以包括其上安装有测试天线的天线支撑结构和轨道，天线支撑结构和测试天线沿着该天线支撑结构由气动定位器移动。 可以在每个测试台中提供可旋转的平台，以支持在该测试台中被测试的设备。 通过在主测试台进行一系列空中测试测量，同时调整天线系统和设备定位系统，可以识别有源测试天线和设备位置的令人满意的位置。 然后，该配置可用于在从站测试站中执行单点空中测试。

公开(公告)号：US20140256373A1

公开(公告)日：2014-09-11

申请号：US13787515

申请日：2013-03-06

Applicant: APPLE, INC.

Inventor： Diego C. Hernandez ,  Indranil Sen ,  Chun-Lung Chen ,  Javier Gomez Tagle

IPC: H04B17/00

CPC classification number: H01Q3/267 ,  H04B17/12 ,  H04B17/27

Abstract: A test system may include a master test station and slave test stations. The test stations may receive devices under test such as portable wireless electronic devices. Each test station may have adjustable antenna structures coupled to test equipment. The adjustable antenna structures may include antenna support structures on which test antennas are mounted and rail along which the antenna support structures and test antennas are moved by a pneumatic positioner. A rotatable platform may be provided in each test station to support the device under test in that test station. By making a series of over-the-air test measurements in the master test station while adjusting the antenna system and device positioning system, a satisfactory location for the active test antenna and device position may be identified. This configuration may then be used in performing single-point over-the-air tests in the slave test stations.

Abstract translation: 测试系统可以包括主测试站和从站测试站。 测试台可以接收被测设备，如便携式无线电子设备。 每个测试台可以具有耦合到测试设备的可调天线结构。 可调天线结构可以包括其上安装有测试天线的天线支撑结构和轨道，天线支撑结构和测试天线沿着该天线支撑结构由气动定位器移动。 可以在每个测试台中提供可旋转的平台，以支持在该测试台中被测试的设备。 通过在主测试台进行一系列空中测试测量，同时调整天线系统和设备定位系统，可以识别有源测试天线和设备位置的令人满意的位置。 然后，该配置可用于在从站测试站中执行单点空中测试。