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公开(公告)号：US20240426960A1
公开(公告)日：2024-12-26
申请号：US18828662
申请日：2024-09-09
Applicant: Apple Inc.
Inventor： Qiang Chen , Robert W. Brumley
Abstract: In some aspects, a mobile device may receive, from a transmitting device, the signal by a plurality of antennas. The mobile device may measure one or more phase differences among the signal received at the plurality of antennas. The mobile device may determine a first set of possible values for the angle of arrival that are consistent with the one or more phase differences. The mobile device may measure one or more signal values using one or more sensors of the mobile device. The mobile device may for each of the first set of possible values, determining a confidence score based on the one or more signal values. The mobile device may select, based on the confidence scores, one of the first set of possible values as the angle of arrival.
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公开(公告)号：US12085657B2
公开(公告)日：2024-09-10
申请号：US17339868
申请日：2021-06-04
Applicant: APPLE INC.
Inventor： Qiang Chen , Robert W. Brumley
Abstract: In some aspects, a mobile device may receive, from a transmitting device, the signal by a plurality of antennas. The mobile device may measure one or more phase differences among the signal received at the plurality of antennas. The mobile device may determine a first set of possible values for the angle of arrival that are consistent with the one or more phase differences. The mobile device may measure one or more signal values using one or more sensors of the mobile device. The mobile device may for each of the first set of possible values, determining a confidence score based on the one or more signal values. The mobile device may select, based on the confidence scores, one of the first set of possible values as the angle of arrival.
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公开(公告)号：US20230353365A1
公开(公告)日：2023-11-02
申请号：US17931072
申请日：2022-09-09
Applicant: APPLE INC.
Inventor： Qiang Chen , Robert W. Brumley , Robert Golshan , Jinjing Jiang
CPC classification number: H04L9/3226 , H04L9/0825 , H04L9/3297
Abstract: A mobile device may receive a plurality of polling messages with each polling message including an identifier of a particular access device transmitting the polling message. Each polling message of the plurality of polling messages may be transmitted during a polling phase. The mobile device may select a timeslot of a response phase of a communication session. The mobile device may transmit a response message during the timeslot of the response phase. The mobile device may receive, during a third phase, an assignment message including an assigned timeslot for a response phase of a future session. The mobile device may perform secure ranging with one or more access devices of the plurality of access devices during the future session using the assigned timeslot. The mobile device may provide an access credential to the one or more access devices based on a location determined using the secure ranging.
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公开(公告)号：US20220390541A1
公开(公告)日：2022-12-08
申请号：US17339868
申请日：2021-06-04
Applicant: APPLE INC.
Inventor： Qiang Chen , Robert W. Brumley
Abstract: In some aspects, a mobile device may receive, from a transmitting device, the signal by a plurality of antennas. The mobile device may measure one or more phase differences among the signal received at the plurality of antennas. The mobile device may determine a first set of possible values for the angle of arrival that are consistent with the one or more phase differences. The mobile device may measure one or more signal values using one or more sensors of the mobile device. The mobile device may for each of the first set of possible values, determining a confidence score based on the one or more signal values. The mobile device may select, based on the confidence scores, one of the first set of possible values as the angle of arrival.
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