公开(公告)号：US10924993B2

公开(公告)日：2021-02-16

申请号：US16109985

申请日：2018-08-23

Applicant: Apple Inc.

Inventor： Jarkko L. Kneckt ,  Matthew L. Semersky ,  Christiaan A. Hartman ,  Oren Shani ,  Yong Liu ,  Xiaowen Wang ,  Tushar R. Shah ,  Yoel Boger ,  Rajneesh Kumar ,  Josef Peery ,  Christian W. Mucke ,  Guoqing Li

IPC: H04W52/02 ,  H04W28/06 ,  H04W88/08 ,  H04W84/12

Abstract: An interface circuit in an electronic device (such as an access point) may utilize a configurable wake-up-frame format. During operation, the interface circuit may receive a wake-up-radio (WUR)-setup request associated with a recipient electronic device, where the WUR-setup request specifies a proposed configurable wake-up-frame format. In response, the electronic device may determine the configurable wake-up-frame format to be used based at least in part on the proposed configurable wake-up-frame format. Then, the interface circuit may provide a WUR-setup response intended for the recipient electronic device, where the WUR-setup response specifies the configurable wake-up-frame format selected for use. Note that the configurable wake-up-frame format may specify a payload length in a wake-up frame and/or one or more operations of at least one of the recipient electronic device or the electronic device after the wake-up frame is transmitted by the electronic device.

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：US20200217875A1

公开(公告)日：2020-07-09

申请号：US16723226

申请日：2019-12-20

Applicant: Apple Inc.

Inventor： Guoqing Li ,  Jarkko L. Kneckt ,  Yong Liu ,  Christiaan A. Hartman ,  Welly Kasten

IPC: G01R1/067 ,  H04W88/08 ,  H04L29/06

Abstract: Methods, systems, and apparatus are presented for performing network probing. A user equipment device (UE) may store a record associating traditional service set identifiers (SSIDs) with corresponding Short SSIDs. According to some embodiments, the UE may receive a message including a Short SSID, and determine whether a corresponding full SSID is known to the UE. Based on the determination, a probe request may be generated, addressed to either the Short SSID or the full SSID. After transmitting the probe request, the UE may receive a probe response, which may include a full SSID corresponding to the Short SSID. The UE may store a record associating the full SSID with the Short SSID, if applicable. According to some embodiments, a UE may receive a plurality of messages including respective SSIDs, and may generate a single probe request addressed to the SSIDs. The UE may receive a plurality of probe responses.

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.

公开(公告)号：US20200059858A1

公开(公告)日：2020-02-20

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 ,  H04W84/04 ,  H04W68/02 ,  H04B7/185 ,  G08C17/02

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：US10568158B2

公开(公告)日：2020-02-18

申请号：US16130342

申请日：2018-09-13

Applicant: Apple Inc.

Inventor： Yong Liu ,  Christiaan A. Hartman ,  Daniel R. Borges ,  Peter N. Heerboth ,  Lawrie Kurian ,  Su Khiong Yong ,  Anand Rajagopalan ,  Saravanan Balasubramaniyan ,  Tashbeeb Haque ,  Andreas Wolf ,  Guoqing Li ,  Lilach Zukerman ,  Oren Shani

IPC: H04W76/14 ,  H04L29/08 ,  H04W8/00 ,  H04W72/12

Abstract: In one set of embodiments, one or more client stations operate to configure Neighbor Awareness Networking (NAN)—direct communication with neighboring client stations, i.e., direct communication between the client stations without utilizing an intermediate access point. Embodiments of the disclosure relate to NAN datapath scheduling and NAN pre-datapath operation setup and scheduling. The NAN datapath embodiments described herein provide a mechanism through which devices can communicate and provide services. Aspects of the datapath development include datapath scheduling, including datapath setup and scheduling attributes, as well as pre-datapath operation triggering and scheduling. Scheduling may include determination of a type of datapath, including paging and synchronized datapaths. NAN data cluster base schedules may be scheduled as equal-sets or subsets of datapath schedules. The datapath model may be implemented for unicast and multicast communication between client stations.