公开(公告)号：US11815607B2

公开(公告)日：2023-11-14

申请号：US17389028

申请日：2021-07-29

Applicant: QUALCOMM Incorporated

Inventor： Jordan Cookman ,  Krishnaranjan Rao ,  Jeffrey Wong ,  David Tuck

IPC: G01S19/21 ,  G01S19/42 ,  G01S19/24

CPC classification number: G01S19/215 ,  G01S19/42 ,  G01S19/243

Abstract: In conditions in which Global Navigation Satellite System (GNSS) signal spoofing is likely occurring, a GNSS receiver may be operated in a reduced operational state with respect to one or more GNSS bands that are likely being spoofed. According to embodiments, a reduced operational state with regard to a GNSS band may comprise performing one or more of the following functions with respect to that GNSS band: disabling data demodulation and decoding, disabling time setting (e.g., time of week (TOW), week number, etc.) disabling acquisition of unknown/not visible satellites, disabling satellite differences, disabling error recovery, reducing non-coherent integration time, and duty cycling the power for one or more receiver blocks associated with the GNSS band.

公开(公告)号：US11754723B2

公开(公告)日：2023-09-12

申请号：US17488424

申请日：2021-09-29

Applicant: QUALCOMM Incorporated

Inventor： Deepika Srinivasan ,  Krishnaranjan Rao ,  Jeffrey Wong ,  Jordan Cookman

IPC: G01S19/23

CPC classification number: G01S19/23

Abstract: An apparatus control method includes: controlling a first frequency band receive chain, of an apparatus, to alternate being on and off with a first duty cycle, the first frequency band receive chain being configured to measure satellite signals within a first frequency band; determining one or more performance criteria; and controlling, based on the one or more performance criteria, a second frequency band receive chain, of the apparatus, to alternate being on and off with a second duty cycle, the second frequency band receive chain being configured to measure satellite signals within a second frequency band.

公开(公告)号：US20230095394A1

公开(公告)日：2023-03-30

申请号：US17488424

申请日：2021-09-29

Applicant: QUALCOMM Incorporated

Inventor： Deepika Srinivasan ,  Krishnaranjan Rao ,  Jeffrey Wong ,  Jordan Cookman

IPC: G01S19/23

Abstract: An apparatus control method includes: controlling a first frequency band receive chain, of an apparatus, to alternate being on and off with a first duty cycle, the first frequency band receive chain being configured to measure satellite signals within a first frequency band; determining one or more performance criteria; and controlling, based on the one or more performance criteria, a second frequency band receive chain, of the apparatus, to alternate being on and off with a second duty cycle, the second frequency band receive chain being configured to measure satellite signals within a second frequency band.

公开(公告)号：US11609339B2

公开(公告)日：2023-03-21

申请号：US16752310

申请日：2020-01-24

Applicant: QUALCOMM Incorporated

Inventor： Jie Wu ,  Robert Thrasher ,  Jeffrey Wong ,  Krishnaranjan Rao

IPC: G01S19/19 ,  G01S19/34 ,  G01S19/42 ,  G01S19/46 ,  G01S19/47 ,  G01S19/00

Abstract: A method of monitoring swimming activity includes: determining at least one of an actual relationship of a mobile device to water or an expected relationship of the mobile device to water; determining ranges to satellites, based on signals received by a satellite positioning system (SPS) receiver of the mobile device, in response to the signals being received by the SPS receiver when the at least one of the actual relationship of the mobile device to water or the expected relationship of the mobile device to water is a desired relationship of the mobile device to water; and determining a location of the mobile device based on the ranges to the satellites.