公开(公告)号：US20230397280A1

公开(公告)日：2023-12-07

申请号：US18453597

申请日：2023-08-22

Applicant: Apple Inc.

Inventor： Lei LI ,  Xiaojun CHEN ,  Camille CHEN ,  Siegfried LEHMANN ,  Vusthla Sunil REDDY ,  Peter M. AGBOH

IPC: H04W76/16 ,  H04W52/50 ,  H04W4/80 ,  H04L5/00 ,  H04W84/18 ,  H04B17/318 ,  H04W12/55

CPC classification number: H04W76/16 ,  H04W52/50 ,  H04W4/80 ,  H04L5/0055 ,  H04W84/18 ,  H04B17/318 ,  H04W12/55

Abstract: Methods performed by a first sink device, a source device, or a second sink device. The first sink device is connected to a source device via a first communication link and a second sink device via a second communication link, wherein the second sink device is configured to eavesdrop on communications between the first sink device and the source device on the first communication link. The methods include determining an occurrence of a trigger event and modifying an operation of at least one of the first sink device, the second sink device or the source device based at least on the trigger event occurring.

公开(公告)号：US20220338056A1

公开(公告)日：2022-10-20

申请号：US17810105

申请日：2022-06-30

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: H04W28/04 ,  H04L69/40 ,  H04R1/10 ,  H04L69/14 ,  H04L1/16 ,  H04L1/18 ,  H04W76/14 ,  H04W84/18

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：US20180212669A1

公开(公告)日：2018-07-26

申请号：US15709360

申请日：2017-09-19

Applicant: Apple Inc.

Inventor： Lei LI ,  Peter M. AGBOH ,  Xiaojun CHEN ,  Qiyang WU ,  Vusthla Sunil REDDY ,  Mohit NARANG

IPC: H04B7/08 ,  H04B1/44 ,  H04B17/12 ,  H04L5/14 ,  H04B7/06

CPC classification number: H04B7/0814 ,  H04B1/44 ,  H04B7/0604 ,  H04B7/0608 ,  H04B17/12 ,  H04B17/318 ,  H04L5/1461 ,  H04W72/0446

Abstract: A wireless communication device includes a number of radio-frequency (RF) antennas and one or more radio circuits. Each radio circuit includes a receive (RX) chain to process RX signals and a transmit (TX) chain to process TX signals. An RF switch network couples at least one RF antenna to at least one radio circuit. A baseband processor controls a configuration of the RF switch network. The baseband processor determines a plurality of parameters and controls the RF switch network based on at least one of the parameters. The parameters are determined during a training interval including at least an inter-frame space (IFS). The configuration of the RF switch network is based on the determined parameters and is employed for selection of an antenna to improve a link performance when used for communication of a next packet following the IFS.

公开(公告)号：US20240106689A1

公开(公告)日：2024-03-28

申请号：US18238456

申请日：2023-08-25

Applicant: Apple Inc.

Inventor： Lei LI ,  Camille CHEN ,  Siegfried LEHMANN ,  Yuelin MA

IPC: H04L27/227 ,  H04L27/26

CPC classification number: H04L27/2278 ,  H04L27/2662

Abstract: Systems and methods for low power wireless device detection are provided. In one or more implementations, a transmitting/advertising device may include a device identifier and/or one or more time-offset bits in a wireless communication frame for a scanning/receiving device. The scanning/receiving device may perform sequence-level correlation operations to detect the presence of the transmitting/advertising device. The sequence-level correlation operations may detect the transmitting/advertising device based on a detection of a correlation signal peak corresponding to the device identifier, and/or based relative timing of the correlation signal peak corresponding to the device identifier and a correlation signal peak corresponding to another item in the wireless communication frame.

公开(公告)号：US20180084569A1

公开(公告)日：2018-03-22

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: H04W72/12 ,  H04W72/04

CPC classification number: H04W72/1263 ,  H04W4/70 ,  H04W4/80 ,  H04W72/0446 ,  H04W72/1252 ,  H04W84/20

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.

公开(公告)号：US20240107426A1

公开(公告)日：2024-03-28

申请号：US18238454

申请日：2023-08-25

Applicant: Apple Inc.

Inventor： Lei LI ,  Camille CHEN ,  Siegfried LEHMANN ,  Yuelin MA

IPC: H04W48/10 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04W48/10 ,  H04L5/0017 ,  H04L27/2695

Abstract: Systems and methods for low power wireless device detection are provided. In one or more implementations, a transmitting/advertising device may include a device identifier and/or one or more time-offset bits in a wireless communication frame for a scanning/receiving device. The scanning/receiving device may perform sequence-level correlation operations to detect the presence of the transmitting/advertising device. The sequence-level correlation operations may detect the transmitting/advertising device based on a detection of a correlation signal peak corresponding to the device identifier, and/or based relative timing of the correlation signal peak corresponding to the device identifier and a correlation signal peak corresponding to another item in the wireless communication frame.

公开(公告)号：US20220183097A1

公开(公告)日：2022-06-09

申请号：US17652792

申请日：2022-02-28

Applicant: Apple Inc.

Inventor： Lei LI ,  Xiaojun CHEN ,  Camille CHEN ,  Siegfried LEHMANN ,  Vusthla Sunil REDDY ,  Peter M. AGBOH

IPC: H04W76/16 ,  H04W52/50 ,  H04W4/80 ,  H04L5/00 ,  H04W84/18 ,  H04B17/318 ,  H04W12/55

Abstract: Methods performed by a first sink device, a source device, or a second sink device. The first sink device is connected to a source device via a first communication link and a second sink device via a second communication link, wherein the second sink device is configured to eavesdrop on communications between the first sink device and the source device on the first communication link. The methods include determining an occurrence of a trigger event and modifying an operation of at least one of the first sink device, the second sink device or the source device based at least on the trigger event occurring.

公开(公告)号：US20200382159A1

公开(公告)日：2020-12-03

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: H04B1/7163 ,  H04B1/7176 ,  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：US20180084606A1

公开(公告)日：2018-03-22

申请号：US15708584

申请日：2017-09-19

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

CPC classification number: H04W88/04 ,  H04L5/0055 ,  H04L2001/0097 ,  H04W4/80 ,  H04W72/0446 ,  H04W72/085 ,  H04W84/18 ,  H04W88/06

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.