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公开(公告)号：US20190305813A1
公开(公告)日：2019-10-03
申请号：US16297425
申请日：2019-03-08
Applicant: QUALCOMM Incorporated
Inventor： Xiaoxin Zhang , Erik David Lindskog , Sunil Ravi , Kurt Erwin Landenberger , Mukul Sharma , Arjun Bhatia
Abstract: This disclosure provides systems, methods and apparatuses, including computer programs encoded on computer storage media, for ranging procedures performed using antenna switching. In one aspect, a device initiating a ranging procedure may transmit a ranging request, which may include antenna switching capabilities of the initiating device, a request for antenna switching by a responding device during the ranging procedure, or both. Ranging signaling may be communicated between the initiating device and the responding device using different transmit antennas, receive antennas, or both. In some implementations, ranging messages transmitted by the responding device may include transmit antenna indices used for transmission of different ranging messages, and receive antenna indices used for reception of different ranging response messages. The initiating device may estimate a range relative to the responding device based on round trip times (RTTs) associated with different antenna pairs used during the ranging procedure.
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公开(公告)号：US11381275B2
公开(公告)日：2022-07-05
申请号：US16297425
申请日：2019-03-08
Applicant: QUALCOMM Incorporated
Inventor： Xiaoxin Zhang , Erik David Lindskog , Sunil Ravi , Kurt Erwin Landenberger , Mukul Sharma , Arjun Bhatia
Abstract: This disclosure provides systems, methods and apparatuses, including computer programs encoded on computer storage media, for ranging procedures performed using antenna switching. In one aspect, a device initiating a ranging procedure may transmit a ranging request, which may include antenna switching capabilities of the initiating device, a request for antenna switching by a responding device during the ranging procedure, or both. Ranging signaling may be communicated between the initiating device and the responding device using different transmit antennas, receive antennas, or both. In some implementations, ranging messages transmitted by the responding device may include transmit antenna indices used for transmission of different ranging messages, and receive antenna indices used for reception of different ranging response messages. The initiating device may estimate a range relative to the responding device based on round trip times (RTTs) associated with different antenna pairs used during the ranging procedure.
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公开(公告)号：US20200099495A1
公开(公告)日：2020-03-26
申请号：US16267822
申请日：2019-02-05
Applicant: QUALCOMM Incorporated
Inventor： Xiaoxin Zhang , Sunil Ravi , Kurt Erwin Landenberger , Alireza Raissinia
Abstract: In some implementations, an apparatus transmits information indicating a modulation and coding scheme (MCS) table for transmitting non-legacy acknowledgement (ACK) frames during a ranging operation to a responder device, receives a ranging frame including an indication of whether the responder device is capable of supporting the indicated MCS table, and transmits to the responder device an ACK frame using an MCS that is based on the capability of the responder device to support the MCS table. In other implementations, the apparatus receives from an initiator device information indicating an MCS table for transmitting non-legacy ACK frames during the ranging operation, transmits a ranging frame including an indication of whether the apparatus is capable of supporting the indicated MCS table, and receives from the initiator device an ACK frame transmitted using an MCS that is based on the capability of the apparatus to support the MCS table.
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