Determining the phase shift matrix for active-tag enhanced intelligent reflective surfaces

A method, comprising:

• obtaining, by a system comprising at least one processor, at a first location, first distance data and first orientation data calibrated for the first location relative to an intelligent reflective surface;
• obtaining, by the system, at a second location, second distance data and second orientation data calibrated for the second location relative to the intelligent reflective surface;
• determining, by the system, based on the first distance data, the first orientation data, the second distance data and the second orientation data, phase shift data of an element of the intelligent reflective surface with respect to redirection of an electromagnetic wave propagated between the first location and the second location via the element of the intelligent reflective surface;
• and
• outputting, by the system, the phase shift data to a reflecting coefficient matrix associated with an array of elements of the intelligent reflective surface,
• wherein the first orientation data is calibrated at the first location via a transmitted calibration signal from the first location to the intelligent reflective surface that is returned to the first location via at least one active backscatter tag coupled to a subgroup of selected elements of the intelligent reflective surface, and
• wherein the at least one active backscatter tag amplifies the transmitted calibration signal without changing a phase of the transmitted calibration signal.

A non-transitory machine-readable medium, comprising executable instructions that, when executed by at least one processor, facilitate performance of operations, the operations comprising:

• obtaining, at a first location, first distance data and first orientation data calibrated for the first location relative to an intelligent reflective surface;
• obtaining, at a second location, second distance data and second orientation data calibrated for the second location relative to the intelligent reflective surface;
• determining, based on the first distance data, the first orientation data, the second distance data and the second orientation data, phase shift data of an element of the intelligent reflective surface with respect to redirection of an electromagnetic wave propagated between the first location and the second location via the element of the intelligent reflective surface;
• and
• outputting the phase shift data to a reflecting coefficient matrix associated with an array of elements of the intelligent reflective surface,
• wherein the first orientation data is calibrated at the first location via a transmitted calibration signal from the first location to the intelligent reflective surface that is returned to the first location via at least one active tag coupled to a subgroup of selected elements of the intelligent reflective surface, and
• wherein the at least one active tag amplifies the transmitted calibration signal without modifying a phase of the transmitted calibration signal.