Backscatter-based positioning
AssigneeQUALCOMM Incorporated
InventorsXiaojie Wang, Jing Sun, Mohammad Tarek Fahim, Srinivas Yerramalli
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Abstract
Systems, methods, and devices for wireless communication that support backscatter-based positioning. A method of wireless communication includes receiving a tag device indicator that indicates a tag capability of a tag device. The method also includes generating a tag configuration associated with transmission of a backscatter signal based on a positioning reference signal (PRS). The tag configuration indicates a frequency shifting parameter based on a frequency shifting capability of a tag device, a phase scrambling parameter based on a phase scrambling capability of the tag device, or a combination thereof. The method further includes transmitting the tag configuration.
Claims27
A method of wireless communication performed by a network entity, the method comprising:
- receiving a tag device indicator that indicates a tag capability, the tag capability including the frequency shifting capability, the phase scrambling capability, or a combination thereof;
- generating a tag configuration associated with transmission of a backscatter signal based on a positioning reference signal (PRS), the tag configuration indicating:
- a frequency shifting parameter based on a frequency shifting capability of a tag device,
- a phase scrambling parameter based on a phase scrambling capability of the tag device, or
- a combination thereof;
- and
- transmitting the tag configuration.
A method of wireless communication performed by a transmission/reception point (TRP), the method comprising:
- transmitting, to the network entity, a measurement report, wherein the measurement report indicates a type and a magnitude of interference in a backscatter signal received from a tag device in response to transmission of the PRS;
- receiving, from a network entity, a TRP configuration that indicates:
- a frequency shifting parameter,
- a phase scrambling parameter, or
- a combination thereof;
- and
- transmitting, based on the TRP configuration, a PRS.
A method of wireless communication performed by a tag device, the method comprising:
- transmitting, to a network entity, a tag device indicator that indicates a tag capability of the tag device, the tag capability including the frequency shifting capability, the phase scrambling capability, or both;
- receiving a tag configuration that indicates:
- a frequency shifting parameter based on a frequency shifting capability of the tag device,
- a phase scrambling parameter based on a phase scrambling capability of the tag device, or
- a combination thereof, and
- transmitting, based on the tag configuration, a backscatter signal in response to a positioning reference signal (PRS).
An apparatus for wireless communication, the apparatus including:
- at least one processor;
- and
- a memory coupled to the at least one processor, wherein the at least one processor is configured to:
- receive, from a network entity, a transmit/receive point (TRP) configuration that indicates a frequency shifting parameter, a phase scrambling parameter, or a combination thereof, wherein the frequency shifting parameter includes a backscatter frequency offset value of a backscatter signal and a timeframe during which a frequency shifting operation is to be performed, and wherein the frequency shifting parameter is configured based on a frequency shifting capability of the tag device;
- and
- initiate transmission of a positioning reference signal (PRS) to a tag device.
Dependencies are inferred from the claim text.