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公开(公告)号：US11378672B2
公开(公告)日：2022-07-05
申请号：US17169025
申请日：2021-02-05
Applicant: Apple Inc.
Inventor： Benjamin A. Werner , Merrick McCracken , Robert W. Brumley
Abstract: A mobile device may receive a plurality of timestamps, wherein the plurality of timestamps indicate sending and receiving time for ranging packets and response packets. The mobile device may calculate a responder turn-around time as a first difference between the second time and the first time. The mobile device may calculate a responding round trip time as a second difference between the second time and the third time. The mobile device may receive from the electronic device an initiator turn-around time and an initiator round trip time. The mobile device may calculate a frequency offset for the wireless protocol using the responder turn-around time, the responding round trip time, the initiator turn-around time, and the initiator round trip time. The mobile device may compare an observed frequency offset to the calculated frequency offset to determine a frequency offset difference and whether it exceeds a threshold, adjusting a ranging measurement.
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公开(公告)号：US12019140B2
公开(公告)日：2024-06-25
申请号：US17805425
申请日：2022-06-03
Applicant: Apple Inc.
Inventor： Benjamin Werner , Merrick McCracken , Robert Brumley
CPC classification number: G01S13/46 , G01S5/0252 , G01S5/0289 , G01S5/10 , H04W64/006 , G01S5/0218 , G01S2013/468
Abstract: A mobile device may receive a plurality of timestamps, wherein the plurality of timestamps indicate sending and receiving time for ranging packets and response packets. The mobile device may calculate a responder turn-around time as a first difference between the second time and the first time. The mobile device may calculate a responding round trip time as a second difference between the second time and the third time. The mobile device may receive from the electronic device an initiator turn-around time and an initiator round trip time. The mobile device may calculate a frequency offset for the wireless protocol using the responder turn-around time, the responding round trip time, the initiator turn-around time, and the initiator round trip time. The mobile device may compare an observed frequency offset to the calculated frequency offset to determine a frequency offset difference and whether it exceeds a threshold, adjusting a ranging measurement.
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公开(公告)号：US20220299621A1
公开(公告)日：2022-09-22
申请号：US17805425
申请日：2022-06-03
Applicant: Apple Inc.
Inventor： Benjamin Werner , Merrick McCracken , Robert Brumley
Abstract: A mobile device may receive a plurality of timestamps, wherein the plurality of timestamps indicate sending and receiving time for ranging packets and response packets. The mobile device may calculate a responder turn-around time as a first difference between the second time and the first time. The mobile device may calculate a responding round trip time as a second difference between the second time and the third time. The mobile device may receive from the electronic device an initiator turn-around time and an initiator round trip time. The mobile device may calculate a frequency offset for the wireless protocol using the responder turn-around time, the responding round trip time, the initiator turn-around time, and the initiator round trip time. The mobile device may compare an observed frequency offset to the calculated frequency offset to determine a frequency offset difference and whether it exceeds a threshold, adjusting a ranging measurement.
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公开(公告)号：US20220099818A1
公开(公告)日：2022-03-31
申请号：US17169025
申请日：2021-02-05
Applicant: Apple Inc.
Inventor： Benjamin A. Werner , Merrick McCracken , Robert W. Brumley
Abstract: A mobile device may receive a plurality of timestamps, wherein the plurality of timestamps indicate sending and receiving time for ranging packets and response packets. The mobile device may calculate a responder turn-around time as a first difference between the second time and the first time. The mobile device may calculate a responding round trip time as a second difference between the second time and the third time. The mobile device may receive from the electronic device an initiator turn-around time and an initiator round trip time. The mobile device may calculate a frequency offset for the wireless protocol using the responder turn-around time, the responding round trip time, the initiator turn-around time, and the initiator round trip time. The mobile device may compare an observed frequency offset to the calculated frequency offset to determine a frequency offset difference and whether it exceeds a threshold, adjusting a ranging measurement.
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