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    Thread boost mode for carrier-sense multiple access/carrier aggregation (CSMA/CA)
    63.
    发明授权
    Thread boost mode for carrier-sense multiple access/carrier aggregation (CSMA/CA) 有权

    公开(公告)号：US11510245B2

    公开(公告)日：2022-11-22

    申请号：US17239339

    申请日：2021-04-23

    Applicant: Apple Inc.

    Inventor： Yaranama Venkata Ramana Dass ,  Assaf Porat ,  Oren Shani ,  Venkateswara Rao Manepalli ,  Paul V. Flynn

    IPC: H04W74/08 ,  H04W84/18 ,  G16Y40/10 ,  G16Y10/75

    Abstract: An approach is described for a wireless device comprising a transceiver and a processor communicatively coupled to the transceiver. The processor is configured to detect a packet for transmission; scan, using the transceiver, a channel during an initial sliding window, the initial sliding window having N symbol durations; determine a power distribution of the initial sliding window based on the channel scan; determine that the channel is occupied during a first time period of the initial sliding window based at least on the power distribution; and determine a second sliding window having a second time period and a third time period. The second time period overlaps with the initial sliding window and a length of the third time period is determined based at least on the power distribution. The processor is further configured to scan, using the transceiver, the channel during the third time period; determine that the channel is idle during the third time period of the second sliding window; and transmit, using the transceiver, the packet to a second wireless device on the channel responsive to the third time period being idle.

    Error vector magnitude requirement negotiation for ranging operation
    65.
    发明授权
    Error vector magnitude requirement negotiation for ranging operation 有权

    公开(公告)号：US11265100B2

    公开(公告)日：2022-03-01

    申请号：US16662582

    申请日：2019-10-24

    Applicant: Apple Inc.

    Inventor： Roy Beeri ,  Qi Wang ,  Oren Shani ,  Yoav Feinmesser

    IPC: H04W4/00 ,  H04L1/00 ,  H04L1/20 ,  H04W48/16 ,  H04B17/309 ,  H04W24/10 ,  H04B17/21 ,  H04W84/12

    Abstract: Some embodiments of this disclosure include apparatuses and methods for implementing a requirement negotiation for an error vector magnitude (EVM) (or other metrics for measuring transmission signal quality) for ranging and/or positioning operation(s). Some embodiments relate to an electronic device including a transceiver and one or more processors communicatively coupled to the transceiver. The one or more processors transmit, during a negotiation phase of a ranging operation, an initial request frame to a second electronic device, wherein the initial request frame comprises a first indication of an error vector magnitude (EVM) requirement. The one or more processors receive an initial response frame from the second electronic device and determine a second indication of the EVM requirement based at least in part on the received initial response frame. The one or more processors implement a measurement phase of the ranging operation in accordance with the second indication of the EVM requirement.

    Ranging Priority Indication
    67.
    发明申请
    Ranging Priority Indication 有权

    公开(公告)号：US20210211836A1

    公开(公告)日：2021-07-08

    申请号：US17205840

    申请日：2021-03-18

    Applicant: Apple Inc.

    Inventor： Srinivas Burugupalli ,  Qi Wang ,  Oren Shani ,  Christiaan A. Hartman ,  Danlin Li ,  Aniruddha S. Diwan

    IPC: H04W4/02 ,  G01S13/76

    Abstract: This disclosure relates to techniques for performing ranging wireless communication including prioritization. A first wireless device may transmit a request for ranging services to a second wireless device. The first wireless device may transmit an indication of a ranging priority to the second wireless device. The second wireless device may determine a granted ranging priority. The first and second wireless device may perform ranging communication according to the granted ranging priority.

    Power saving for non-trigger-based ranging
    68.
    发明授权
    Power saving for non-trigger-based ranging 有权

    公开(公告)号：US11057829B2

    公开(公告)日：2021-07-06

    申请号：US16550508

    申请日：2019-08-26

    Applicant: Apple Inc.

    Inventor： Qi Wang ,  Christiaan A. Hartman ,  Oren Shani ,  Rafi Vitory ,  Roy Beeri ,  Yoav Feinmesser

    IPC: H04W52/02 ,  H04W64/00 ,  H04W84/12

    Abstract: Methods for performing a ranging procedure according to the non-trigger-based protocol may include negotiating timing parameters associated with the ranging procedure, performing a ranging measurement, and transmitting/receiving, after completion of the ranging measurement, a message announcing initiation of another ranging measurement. The timing parameters may indicate a time window in which an initiating device can initiate a subsequent ranging measurement and the message announcing initiation of the second ranging measurement may be received during the time range specified. Timing parameters may indicate a responding device's required minimum and maximum time between ranging measurements. Additional parameters may indicate an initiating device's required minimum and maximum time between ranging measurements. A power savings mode may be entered after the first ranging measurement and during at least a portion of a time period specified by the parameters.

    Efficient scan and service discovery
    69.
    发明授权
    Efficient scan and service discovery 有权

    公开(公告)号：US10999798B2

    公开(公告)日：2021-05-04

    申请号：US16013697

    申请日：2018-06-20

    Applicant: Apple Inc.

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

    IPC: H04W52/02 ,  H04W84/12

    Abstract: An interface circuit in an electronic device (such as an access point) may provide a wake-up beacon to a recipient electronic device. During operation, the interface circuit may provide a wake-up beacon associated with a predefined sub-channel in one or more channels in a band of frequencies, where the wake-up beacon is for a wake-up radio in the recipient electronic device. Moreover, the wake-up beacon may be provided within an associated time interval, such as a keep-alive interval of the electronic device. In some embodiments, the wake-up beacon includes a field with channel information that specifies one or more second channels used by a main radio in the recipient electronic device. Alternatively or additionally, the wake-up beacon may include a field with service information that specifies one or more types of services and/or a field with information specifying a transmit power of the interface circuit.

    Power saving using integrated CF-End indication
    70.
    发明授权
    Power saving using integrated CF-End indication 有权

    公开(公告)号：US10524286B2

    公开(公告)日：2019-12-31

    申请号：US15605158

    申请日：2017-05-25

    Applicant: Apple Inc.

    Inventor： Jarkko L. Kneckt ,  Ashok Ranganath ,  Yong Liu ,  Christiaan A. Hartman ,  Guoqing Li ,  Oren Shani ,  Joonsuk Kim

    IPC: H04W74/00 ,  H04W74/08 ,  H04L29/06 ,  H04W52/02 ,  H04W84/12

    Abstract: An electronic device that transmits a frame to a second electronic device is described. In particular, during operation, an interface circuit in the electronic device (such as an access point in a WLAN) may transmit the frame to the second electronic device using a Wi-Fi communication protocol. The frame may include information cancelling a previously specified NAV protected time in a preamble of the frame. For example, the information may include a CF-End indication. Moreover, the information may be included in a MAC header of the frame and, more generally, in a preamble of a high efficiency (HE) physical layer convergence protocol (PLCP) protocol data unit (PPDU). Furthermore, the electronic device may transmit the frame in response to a block acknowledgment (BA) from the second electronic device.

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