公开(公告)号：US10958306B2

公开(公告)日：2021-03-23

申请号：US16818191

申请日：2020-03-13

Applicant: Apple Inc.

Inventor： Xiaoming Yu ,  Alejandro J. Marquez ,  Lei Li ,  Peter M. Agboh ,  Shang-Te Yang ,  Vusthla Sunil Reddy ,  Pradeep K. Marri ,  Manjit S. Walia ,  Ali Pourghorban Saghati

IPC: H04B1/7176 ,  H04B1/7163 ,  H04B1/717

Abstract: Some embodiments include a system, method, and computer program product for managing the Ultra Wideband (UWB) systems, especially when the UWB system is collocated with another wireless system (e.g., WiFi) to transmit and/or receive UWB signals with an occupied bandwidth (OBW) that satisfies a UWB OBW standard (e.g., a UWB OBW>=500 MHz.) In some embodiments a TailBit signal (e.g., a periodic signal at a selected frequency) is added to a UWB packet to generate frequency components at the selected frequency that enables the power spectrum of the TailBit UWB signal to satisfy the UWB OBW standard. In some embodiments an altered code sequence is used to generate an altered spread signal, where the altered code sequence reduces or removes a frequency component peak near DC frequency of the power spectrum of an altered UWB signal, resulting in altered UWB OBW that satisfies the UWB OBW standard.

公开(公告)号：US09319887B2

公开(公告)日：2016-04-19

申请号：US14095913

申请日：2013-12-03

Applicant: APPLE INC.

Inventor： Camille Chen ,  Lei Li ,  Chris Zimmermann ,  Michael J. Giles ,  Jaime Tolentino ,  Chris Hartman ,  Arthur Lin

IPC: H04L12/28 ,  H04W4/00 ,  H04B15/00 ,  H04W16/14 ,  H04L1/24 ,  H04W28/04 ,  H04W24/02 ,  H04W92/18 ,  H04L1/20 ,  H04W24/06 ,  H04W24/10 ,  H04W28/18 ,  H04W84/12 ,  H04W84/18 ,  H04W88/06

CPC classification number: H04W28/04 ,  H04B7/0413 ,  H04B17/318 ,  H04L1/20 ,  H04L1/24 ,  H04W4/80 ,  H04W16/14 ,  H04W24/02 ,  H04W24/06 ,  H04W24/10 ,  H04W28/18 ,  H04W52/243 ,  H04W84/12 ,  H04W84/18 ,  H04W88/06 ,  H04W92/18 ,  Y02D70/00 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/22

Abstract: Methods and apparatus for reduction of interference between a plurality of wireless interfaces. In one exemplary embodiment, a device having a first (e.g., Wi-Fi) interface and a second (e.g., Bluetooth) interface monitors interference between its interfaces. A reduction in transmit power of the Wi-Fi module causes a disproportionately larger reduction in undesirable interference experienced at the Bluetooth antennas. For example, when the Bluetooth interface detects interference levels above acceptable thresholds, the Wi-Fi interface adjusts operation of one or more of its transmit chains based on various conditions such as duty cycle, Received Signal Strength Indication (RSSI), etc. Various embodiments of the present invention provide simultaneous operation of WLAN and PAN interfaces, without requiring time division coexistence, by reducing power on a subset of interfering antennas.

公开(公告)号：US20140177459A1

公开(公告)日：2014-06-26

申请号：US13725801

申请日：2012-12-21

Applicant: APPLE INC.

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

IPC: H04W24/00

CPC classification number: H04B17/14 ,  H04L41/0806 ,  H04L43/50

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US10602397B2

公开(公告)日：2020-03-24

申请号：US15708521

申请日：2017-09-19

Applicant: APPLE INC.

Inventor： Anatoli Gostev ,  Louay Alsakka ,  Axel Berny ,  Tad Dreier ,  Joachim Hammerschmidt ,  Lei Li ,  Xiaojun Chen ,  Vusthla Sunil Reddy ,  Peter M. Agboh ,  Mohit Narang

IPC: H04H20/71 ,  H04W28/04 ,  H04L29/14 ,  H04R1/10 ,  H04L29/06 ,  H04L1/16 ,  H04L1/18 ,  H04W76/14 ,  H04W84/18 ,  H04W88/04 ,  H04R5/033 ,  H04W84/20 ,  H04L1/00 ,  H04W4/80 ,  H04W56/00 ,  H04W72/04

Abstract: Exemplary embodiments include a system having a first wireless audio output device configured to connect to a source device via a first piconet and a second wireless audio output device configured to connect to the first wireless audio output device via a second piconet. A schedule of the first piconet includes a plurality of slots associated with an audio packet, a first subset of the slots used by the source device to transmit the audio packet, the first and second wireless audio output devices tuning to the first piconet to listen for the transmissions of the audio packet, and when, after a last one of the first subset of slots, the first or second wireless audio output devices did not receive the audio packet, the first and second wireless audio output devices exchange information via the second piconet such that the both wireless audio output device receive the audio packet.

公开(公告)号：US10263753B2

公开(公告)日：2019-04-16

申请号：US14850834

申请日：2015-09-10

Applicant: Apple Inc.

Inventor： Lei Li ,  Xiaojun Chen ,  Vusthla Sunil Reddy ,  Diego C. Hernandez ,  Peter M. Agboh ,  Mohit Narang ,  Ruben Caballero ,  Indranil S. Sen

IPC: H04L5/00 ,  H04W72/08 ,  H04W84/12 ,  H04W72/04

Abstract: In order to improve the quality of communication between electronic devices, one or more sub-channels used during communication between the electronic devices are dynamically modified based on one or more performance metrics and allowed transmit powers of the sub-channels. In particular, when the one or more performance metrics indicate that a distance between the electronic devices falls within a mid-range of distances, the one or more performance metrics may be used to guide selective changes to the sub-channels used during the communication based on the allowed transmit powers. The changes to the sub-channels used during the communication may increase, decrease or leave the total bandwidth unchanged. Moreover, by changing the sub-channels used during the communication, the allowed transmit power(s) of the sub-channel(s) used may be increased, which may improve the performance during the communication.

公开(公告)号：US20180317127A1

公开(公告)日：2018-11-01

申请号：US15960421

申请日：2018-04-23

Applicant: Apple Inc.

Inventor： Camille Chen ,  Lei Li ,  Chris Zimmermann ,  Michael J. Giles ,  Jaime Tolentino ,  Chris Hartman ,  Arthur Lin

IPC: H04W28/04 ,  H04W28/18 ,  H04W4/80 ,  H04W52/24 ,  H04B17/318 ,  H04B7/0413 ,  H04W92/18 ,  H04W24/02 ,  H04W16/14 ,  H04W24/10

CPC classification number: H04W16/14 ,  H04B7/0413 ,  H04B17/318 ,  H04L1/20 ,  H04L1/24 ,  H04W4/80 ,  H04W24/02 ,  H04W24/06 ,  H04W24/10 ,  H04W28/04 ,  H04W28/18 ,  H04W52/243 ,  H04W84/12 ,  H04W84/18 ,  H04W88/06 ,  H04W92/18 ,  Y02D70/00 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/22

Abstract: Methods and apparatus for reduction of interference between a plurality of wireless interfaces. In one exemplary embodiment, a device having a first (e.g., Wi-Fi) interface and a second (e.g., Bluetooth) interface monitors interference between its interfaces. A reduction in transmit power of the Wi-Fi module causes a disproportionately larger reduction in undesirable interference experienced at the Bluetooth antennas. For example, when the Bluetooth interface detects interference levels above acceptable thresholds, the Wi-Fi interface adjusts operation of one or more of its transmit chains based on various conditions such as duty cycle, Received Signal Strength Indication (RSSI), etc. Various embodiments of the present invention provide simultaneous operation of WLAN and PAN interfaces, without requiring time division coexistence, by reducing power on a subset of interfering antennas.

公开(公告)号：US20160242071A1

公开(公告)日：2016-08-18

申请号：US15099397

申请日：2016-04-14

Applicant: Apple Inc.

Inventor： Camille Chen ,  Lei Li ,  Chris Zimmermann ,  Michael J. Giles ,  Jaime Tolentino ,  Chris Hartman ,  Arthur Lin

IPC: H04W28/04 ,  H04B17/318 ,  H04W24/10 ,  H04W52/24 ,  H04W24/02 ,  H04W28/18 ,  H04W4/00 ,  H04B7/04

CPC classification number: H04W28/04 ,  H04B7/0413 ,  H04B17/318 ,  H04L1/20 ,  H04L1/24 ,  H04W4/80 ,  H04W16/14 ,  H04W24/02 ,  H04W24/06 ,  H04W24/10 ,  H04W28/18 ,  H04W52/243 ,  H04W84/12 ,  H04W84/18 ,  H04W88/06 ,  H04W92/18 ,  Y02D70/00 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/22

Abstract: Methods and apparatus for reduction of interference between a plurality of wireless interfaces. In one exemplary embodiment, a device having a first (e.g., Wi-Fi) interface and a second (e.g., Bluetooth) interface monitors interference between its interfaces. A reduction in transmit power of the Wi-Fi module causes a disproportionately larger reduction in undesirable interference experienced at the Bluetooth antennas. For example, when the Bluetooth interface detects interference levels above acceptable thresholds, the Wi-Fi interface adjusts operation of one or more of its transmit chains based on various conditions such as duty cycle, Received Signal Strength Indication (RSSI), etc. Various embodiments of the present invention provide simultaneous operation of WLAN and PAN interfaces, without requiring time division coexistence, by reducing power on a subset of interfering antennas.

Abstract translation: 用于减少多个无线接口之间的干扰的方法和装置。 在一个示例性实施例中，具有第一（例如Wi-Fi）接口和第二（例如，蓝牙）接口的设备监视其接口之间的干扰。 Wi-Fi模块的发射功率的降低导致在蓝牙天线上经历的不期望的干扰的不成比例地更大的减少。 例如，当蓝牙接口检测到高于可接受阈值的干扰电平时，Wi-Fi接口根据诸如占空比，接收信号强度指示（RSSI）等各种条件调整其发射链中的一个或多个的操作。各种实施例 本发明通过减少干扰天线子集的功率来提供WLAN和PAN接口的同时操作，而不需要时分共享。

公开(公告)号：US11076359B2

公开(公告)日：2021-07-27

申请号：US16607169

申请日：2017-06-02

Applicant: Apple Inc.

Inventor： Zhu Ji ,  Ruirui Zong ,  Wenshan Pan ,  Lei Li ,  Yaoqi Yan ,  Elliot S. Briggs

IPC: H04W52/20 ,  H04W52/14 ,  H04L1/20 ,  H04W52/36 ,  H04W72/04 ,  H04W52/34

Abstract: A device, system, and method adaptively adjusts uplink power transmission to component carriers in carrier aggregation. The method is performed at a user equipment configured with a carrier aggregation functionality including a primary component carrier (PCC) and a secondary component carrier (SCC), the UE using a first transmit power for an uplink transmission on the PCC and using a second transmit power for the uplink transmission on the SCC. The method includes determining whether a total transmit power including the first and second transmit powers for the uplink transmission exceeds a predetermined threshold. The method includes, when the total transmit power exceeds the predetermined threshold, adjusting the first transmit power based on a connectivity parameter for the PCC. The method includes adjusting the second transmit power based on the adjusting of the first transmit power.

公开(公告)号：US10681773B2

公开(公告)日：2020-06-09

申请号：US16238750

申请日：2019-01-03

Applicant: APPLE INC.

Inventor： Lei Li ,  Xiaojun Chen ,  Vusthla Sunil Reddy ,  Peter M. Agboh ,  Mohit Narang

IPC: H04W88/04 ,  H04L5/00 ,  H04W84/18 ,  H04W72/08 ,  H04W72/04 ,  H04W88/06 ,  H04W4/80 ,  H04L1/00

Abstract: Exemplary embodiments include a system having a first wireless audio output device and a second wireless audio output device. One of the first or second audio output devices is configured to one of connect as a slave to a source device in a first piconet and connect as a master to the other one of the first or second audio output devices in a second piconet. The one of the first or second wireless audio output devices determines whether an audio packet transmitted by the source device via the first piconet was received by the first wireless audio output device and the second wireless audio output device, and, when at least one of the first wireless audio output device or the second wireless audio output device did not receive the audio packet, the audio packet is exchanged between the first and second wireless audio output devices via the second piconet.

公开(公告)号：US10517111B2

公开(公告)日：2019-12-24

申请号：US15708746

申请日：2017-09-19

Applicant: APPLE INC.

Inventor： Lei Li ,  Xiaojun Chen ,  Vusthla Sunil Reddy ,  Mohit Narang ,  Qiyang Wu ,  Peter M. Agboh

IPC: H04W4/00 ,  H04W72/12 ,  H04W72/04 ,  H04W84/20 ,  H04W4/80 ,  H04W4/70

Abstract: Exemplary embodiments include a method performed by a wireless device configured as a slave in a first piconet and configured as a master in a second piconet. The method includes determining whether the wireless device has data to transmit over the second piconet to an other wireless device, determining an availability of a full slot in a first piconet schedule, selecting a data transmission scheme based on the availability of the full slot in the first piconet schedule and transmitting the data via the second piconet to the other wireless device in accordance with the selected data transmission scheme.