公开(公告)号：US20220132371A1

公开(公告)日：2022-04-28

申请号：US17508876

申请日：2021-10-22

Applicant: Apple Inc.

Inventor： Tianyu Wu ,  Jinjing Jiang ,  Jarkko Lauri Sakari Kneckt ,  Yong Liu ,  Lochan Verma ,  Qi Wang ,  Su Khiong Yong

IPC: H04W28/06 ,  H04L29/06 ,  H04L29/08

Abstract: Techniques for trigger-based transmission in a wireless network include receiving, at a first wireless device, a trigger signal including an indication of a first value for a parameter of a trigger-based physical layer protocol data unit (TB PPDU) transmission to a second wireless device, selecting, by the first wireless device, a second value for the parameter of the TB PPDU transmission, wherein the second value for the parameter is different from the first value for the parameter, and transmitting, by the first wireless device and to the second wireless device, the TB PPDU transmission using the second value for the parameter.

公开(公告)号：US20210410137A1

公开(公告)日：2021-12-30

申请号：US17355438

申请日：2021-06-23

Applicant: Apple Inc.

Inventor： Jinjing Jiang ,  Su Khiong Yong ,  Yong Liu ,  Jarkko L. Kneckt ,  Tianyu Wu ,  Lochan Verma ,  Qi Wang ,  Guoqing Li

IPC: H04W72/04 ,  H04W72/12 ,  H04W72/08

Abstract: An electronic device may receive a frame associated with a second electronic device. This frame may include a MAC header with information specifying a request for a trigger or a trigger frame, and the information may include a suggested time interval during which the trigger or the trigger frame is to be provided and a requested resource allocation. For example, the MAC header may include an A-control field, and the A-control field may include the information or may include multiple A-MPDUs and one or more of the A-MPDUs (such as a last A-MPDU or all of the A-MPDUs) may include the information. Moreover, the time interval may begin at a previous transmission associated with the second electronic device, and the requested resource allocation may include a capacity. In response to the request, the electronic device may provide the trigger or the trigger frame addressed to the second electronic device.

公开(公告)号：US11160017B2

公开(公告)日：2021-10-26

申请号：US16662848

申请日：2019-10-24

Applicant: Apple Inc.

Inventor： Yong Liu ,  Christiaan A. Hartman ,  Siegfried Lehmann ,  Su Khiong Yong ,  Guoqing Li

IPC: H04W52/02 ,  H04L29/06 ,  G08C17/02 ,  H04B7/185 ,  H04W68/02 ,  H04W84/04 ,  H04W84/12 ,  H04W48/12 ,  H04W4/80 ,  H04W88/10 ,  H04W88/06

Abstract: A dual-radio AP including both a high-power (e.g., Wi-Fi) radio and a low-power (e.g., BLE) radio may support an assisted wakeup service for a power-limited dual-radio mobile device (STA). The power-limited STA may register with the AP for the assisted wakeup service, and may then disable its Wi-Fi radio (or otherwise initiate a lower-power mode). The power-limited STA may receive a BLE communication indicating the AP has pending Wi-Fi transmissions or updates applicable to the power-limited STA. In response, the power-limited STA may turn on its Wi-Fi radio and receive the pending transmissions or updates from the AP. If an AP does not include a low-power radio, then a high-power/low-power dual-radio STA that is not power-limited may serve as an assisted wakeup service proxy. The proxy may scan and trace the Wi-Fi beacons from the AP, and generate the BLE communication to the power-limited STA on behalf of the AP.

公开(公告)号：US10959174B2

公开(公告)日：2021-03-23

申请号：US16113550

申请日：2018-08-27

Applicant: Apple Inc.

Inventor： Jarkko L. Kneckt ,  Yong Liu ,  Su Khiong Yong ,  Christiaan A. Hartman ,  Guoqing Li

IPC: H04W52/02 ,  H04W84/12

Abstract: An interface circuit in an electronic device (such as an access point) may receive a wake-up-radio (WUR)-setup request associated with a recipient electronic device, where the WUR-setup request specifies one or more proposed data criteria or wake-up criteria that indicate when a wake-up frame is to be transmitted to the recipient electronic device. In response, the electronic device may determine one or more data criteria (or wake-up criteria) for use based at least in part on the one or more proposed data criteria. Then, the interface circuit may provide a WUR-setup response intended for the recipient electronic device, where the WUR-setup response indicates acceptance of the one or more proposed data criteria for use as the one or more data criteria or a proposed modification of at least one of the one or more proposed data criteria.

公开(公告)号：US10893482B2

公开(公告)日：2021-01-12

申请号：US16550640

申请日：2019-08-26

Applicant: Apple Inc.

Inventor： Yong Liu ,  Christiaan A. Hartman ,  Jarkko L. Kneckt ,  Su Khiong Yong

IPC: H04W52/04 ,  H04W4/80 ,  H04W52/24 ,  H04W8/00 ,  H04W84/12

Abstract: Wireless stations may operate to configure direct communication with neighboring wireless stations (direct communication between wireless stations without an intermediate access point). Mechanisms for near-field device-to-device communications are disclosed. A wireless station may be configured to determine a minimum power level for a near-field device-to-device datapath. The wireless device may determine an average channel interference for a first discovery channel and compare the average channel interference to a first threshold. If the average channel interference is less than the first threshold, the wireless device may select a first transmission mode associated with a first power level and determine a maximum data rate for the first transmission mode. If the maximum data rate at least meets a quality of service requirements for a device-to-device transmission with a neighboring wireless device, the wireless device may perform device-to-device transmissions with the neighboring wireless device using the first transmission mode.

公开(公告)号：US10805056B2

公开(公告)日：2020-10-13

申请号：US15336728

申请日：2016-10-27

Applicant: Apple Inc.

Inventor： Guoqing Li ,  Christiaan A. Hartman ,  Joonsuk Kim ,  Su Khiong Yong ,  Yong Liu

IPC: H04L5/00 ,  H04W52/02 ,  H04W28/18 ,  H04L1/00 ,  H04W84/12

Abstract: A wireless local area network station (STA) changes a receiver operating mode (ROM) and saves power by influencing when a ROM-conforming access point (AP) transmission takes place. The STA evaluates candidate delay regimes after a negotiation exchange with the STA. The STA then instructs the AP of a selected delay regime which the AP is permitted to use when transmitting data according to the changed ROM. The ROM can involve a change in the system bandwidth demodulated by the STA and/or the number of spatial streams demodulated by the STA. The delay regime can allow the AP to transmit with little or no delay based on the changed ROM, or the delay regime may require a fixed time delay before the AP transmits according to the changed ROM.

公开(公告)号：US10681759B2

公开(公告)日：2020-06-09

申请号：US16110557

申请日：2018-08-23

Applicant: Apple Inc.

Inventor： Yong Liu ,  Christiaan A. Hartman ,  Guoqing Li ,  Lawrie Kurian ,  Peter N. Heerboth ,  Su Khiong Yong

IPC: H04W4/00 ,  H04W76/14 ,  H04W8/00 ,  H04W84/12 ,  H04W48/12

Abstract: One or more wireless stations may operate to configure direct communication with neighboring mobile stations, e.g., direct communication between the wireless stations without utilizing an intermediate access point. A mechanism for a wireless station to transmit a paging beacon outside of a paging window may include establishing a paged data link with a peer station, determining that one or more data frames associated with the paged data link are pending transmission, and transmitting a beacon to the peer station outside of a scheduled paging window of the paged data link. The beacon may include a paging attribute indicating there are pending data frames.

公开(公告)号：US20200100189A1

公开(公告)日：2020-03-26

申请号：US16550640

申请日：2019-08-26

Applicant: Apple Inc.

Inventor： Yong Liu ,  Christiaan A. Hartman ,  Jarkko L. Kneckt ,  Su Khiong Yong

IPC: H04W52/24 ,  H04W4/80 ,  H04W8/00

Abstract: Wireless stations may operate to configure direct communication with neighboring wireless stations (direct communication between wireless stations without an intermediate access point). Mechanisms for near-field device-to-device communications are disclosed. A wireless station may be configured to determine a minimum power level for a near-field device-to-device datapath. The wireless device may determine an average channel interference for a first discovery channel and compare the average channel interference to a first threshold. If the average channel interference is less than the first threshold, the wireless device may select a first transmission mode associated with a first power level and determine a maximum data rate for the first transmission mode. If the maximum data rate at least meets a quality of service requirements for a device-to-device transmission with a neighboring wireless device, the wireless device may perform device-to-device transmissions with the neighboring wireless device using the first transmission mode.

公开(公告)号：US20200084706A1

公开(公告)日：2020-03-12

申请号：US16564259

申请日：2019-09-09

Applicant: Apple Inc.

Inventor： Su Khiong Yong ,  Christiaan A. Hartman ,  Jarkko L. Kneckt ,  Mingguang Xu ,  Mithat C. Dogan ,  Yong Liu

IPC: H04W48/16 ,  H04B17/373 ,  H04W64/00 ,  H04L12/26

Abstract: Methods for performing error recovery during a ranging procedure may include negotiation one or more ranging parameters, including a set of secure training sequences and receipt of a first ranging frame that may include a first dialog token and may have an appended first secure training sequence. The first ranging frame may be decoded based on the first dialog token but not correlated based on the first secure training sequence. A first acknowledgment that may include an appended second secure training sequence may be transmitted. The second secure training sequence may be associated with a prior dialog token. A second ranging frame that may include a second dialog token and may have an appended third secure training sequence may be received. The second ranging frame may be decoded based on the third dialog token and correlated based on the third secure training sequence.

公开(公告)号：US10588168B2

公开(公告)日：2020-03-10

申请号：US15926016

申请日：2018-03-20

Applicant: Apple Inc.

Inventor： Yong Liu ,  Christiaan A. Hartman ,  Guoqing Li ,  Lawrie Kurian ,  Peter N. Heerboth ,  Su Khiong Yong

IPC: H04W76/14 ,  H04W76/27 ,  H04L12/825 ,  H04W52/02 ,  H04W36/00 ,  H04W8/00 ,  H04W84/18 ,  H04W84/12 ,  H04W88/06

Abstract: In some embodiments, one or more wireless stations operate to configure direct communication with one or more neighboring mobile stations, e.g., direct communication between the wireless stations without utilizing an intermediate access point. Embodiments of the disclosure relate to a mechanism for a wireless station to transmit a pause indication to one or more neighboring peer wireless stations, indicating a pause in direct communication.