Reconfigurable intelligent surface failure mitigation and/or detection

An apparatus for wireless communication at a network entity, comprising:

• one or more memories;
• and
• one or more processors, coupled to the one or more memories, individually or collectively configured to cause the network entity to:
• identify a first network node to transmit a pilot signal;
• identify a second network node to receive the pilot signal and compute a measurement report based at least in part on the pilot signal;
• transmit, to a reconfigurable intelligent surface (RIS) controller, a configuration to apply an RIS pattern from a dedicated failed element detection codebook in accordance with a time schedule;
• receive, from the second network node, the measurement report;
• and
• transmit, to the RIS controller, an updated codebook, wherein the updated codebook is based at least in part on the measurement report.

A method of wireless communication performed by a network node, comprising:

• receiving, from a network entity, a configuration of a codebook associated with a reconfigurable intelligent surface (RIS) pattern;
• receiving, from the network entity, an indication of a codeword in the codebook that is potentially associated with RIS element failure based at least in part on one or more RIS attributes;
• and
• performing an RIS failure mitigation based at least in part on the indication.

A method of wireless communication performed by a network entity, comprising:

• identifying a first network node to transmit a pilot signal;
• identifying a second network node to receive the pilot signal and compute a measurement report based at least in part on the pilot signal, wherein the second network node is along a specular reflection or refraction direction;
• transmitting, to a reconfigurable intelligent surface (RIS) controller, a configuration to apply an RIS pattern from a dedicated failed element detection codebook in accordance with a time schedule;
• receiving, from the second network node, the measurement report;
• and
• transmitting, to the RIS controller, an updated codebook, wherein the updated codebook is based at least in part on the measurement report.