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US 12,732,231 B2Granted
Reconfigurable intelligent surface calibration
AssigneeQUALCOMM Incorproated
InventorsNarayan Prasad, Navid Abedini, Tao Luo, Junyi Li
Life of this patent
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Abstract
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may transmit, to a reconfigurable intelligent surface (RIS) controller associated with an RIS, a configuration for applying an RIS pattern. The network node may receive, from a network element, a measurement report indicating received observations of pilot signals reflected by the RIS in accordance with the RIS pattern. The network node may transmit, to the RIS controller and based at least in part on the measurement report, an indication of one or more of an updated codebook or a phase drift associated with a calibration of the RIS. Numerous other aspects are described.
Claims22
An apparatus for wireless communication at a network node, comprising:
- one or more memories;
- and
- one or more processors, coupled to the one or more memories, configured to cause the network node to:
- identify a first network element to transmit pilot signals;
- identify a second network element to receive the pilot signals reflected by a reconfigurable intelligent surface (RIS) and indicate a measurement report;
- transmit, to a RIS controller associated with the RIS, a configuration for applying an RIS pattern;
- receive, from the second network element, the measurement report indicating received observations of the pilot signals reflected by the RIS in accordance with the RIS pattern;
- and
- transmit, to the RIS controller and based at least in part on the measurement report, an indication of one or more of an updated codebook associated with a calibration of the RIS or a phase drift associated with the calibration of the RIS.
6 more elements
An apparatus for wireless communication at a network node, comprising:
- one or more memories;
- and
- one or more processors, coupled to the one or more memories, configured to cause the network node to:
- transmit, to a reconfigurable intelligent surface (RIS) controller associated with an RIS, a configuration for applying an RIS pattern, wherein the RIS pattern is an applied sequential time-varying RIS pattern;
- receive, from a network element, a measurement report indicating received observations of pilot signals reflected by the RIS in accordance with the RIS pattern;
- and
- transmit, to the RIS controller and based at least in part on the measurement report, an indication of one or more of an updated codebook associated with a calibration of the RIS or a phase drift associated with the calibration of the RIS.
4 more elements
An apparatus for wireless communication at a network node, comprising:
- one or more memories;
- and
- one or more processors, coupled to the one or more memories, configured to cause the network node to:
- transmit, to a reconfigurable intelligent surface (RIS) controller associated with an RIS, a configuration for applying an RIS pattern;
- receive, from a network element, a measurement report indicating received observations of pilot signals reflected by the RIS in accordance with the RIS pattern;
- and
- transmit, to the RIS controller and based at least in part on the measurement report, an indication of one or more of an updated codebook associated with a calibration of the RIS or a phase drift associated with the calibration of the RIS;
- wherein the measurement report further indicates supporting information, and the supporting information indicates one or more of:
- location information associated with the network element, or an angular direction of reference elements associated with the network element with respect to an RIS array reference element.
6 more elements
An apparatus for wireless communication at a network node, comprising:
- one or more memories;
- and
- one or more processors, coupled to the one or more memories, configured to cause the network node to:
- transmit, to a reconfigurable intelligent surface (RIS) controller associated with an RIS, a configuration for applying an RIS pattern;
- receive, from a network element, a measurement report indicating received observations of pilot signals reflected by the RIS in accordance with the RIS pattern;
- compute a phase drift based at least in part on the received observations of the pilot signals reflected by the RIS and an effective channel;
- transmit, to the RIS controller and based at least in part on the measurement report, an indication of the computed phase drift.
4 more elements
An apparatus for wireless communication at a network node, comprising:
- one or more memories;
- and
- one or more processors, coupled to the one or more memories, configured to cause the network node to:
- identify a network element to transmit the pilot signals;
- and
- identify the network element to receive the pilot signals reflected by a reconfigurable intelligent surface (RIS) and indicate a measurement report, wherein the network element is associated with a full-duplex operation;
- transmit, to an RIS controller associated with the RIS, a configuration for applying an RIS pattern;
- receive, from the network element, the measurement report indicating received observations of the pilot signals reflected by the RIS in accordance with the RIS pattern;
- transmit, to the RIS controller and based at least in part on the measurement report, an indication of one or more of an updated codebook associated with a calibration of the RIS or a phase drift associated with the calibration of the RIS.
6 more elements
An apparatus for wireless communication at a network node, comprising:
- one or more memories;
- and
- one or more processors, coupled to the one or more memories, configured to cause the network node to:
- transmit, to a reconfigurable intelligent surface (RIS) controller associated with an RIS, a configuration for applying an RIS pattern;
- receive, from a network element, a measurement report indicating received observations of pilot signals reflected by the RIS in accordance with the RIS pattern;
- and
- transmit, to the RIS controller and based at least in part on the measurement report, an indication of one or more of an updated codebook associated with a calibration of the RIS or a phase drift associated with the calibration of the RIS;
- wherein a calibration or a recalibration is triggered based at least in part on:
- a signal quality satisfying a threshold, or
- sensor information from the RIS.
7 more elements
A method of wireless communication performed by a network node, comprising:
- identifying a first network element to transmit pilot signals;
- identifying a second network element to receive the pilot signals reflected by a reconfigurable intelligent surface (RIS) and indicate a measurement report;
- transmitting, to a RIS controller associated with the RIS, a configuration for applying an RIS pattern;
- receiving, from the second network element, the measurement report indicating received observations of the pilot signals reflected by the RIS in accordance with the RIS pattern;
- and
- transmitting, to the RIS controller and based at least in part on the measurement report, an indication of one or more of an updated codebook associated with a calibration of the RIS or a phase drift associated with the calibration of the RIS.
3 more elements
Dependencies are inferred from the claim text.