A method of wireless communication at a user equipment (UE) is provided. The method includes receiving, from a scheduling entity, an indication of at least two different cross link interference (CLI) measurement resources of a message for transmission from a transmission source. The method also includes receiving, from an intelligent reflecting surface (IRS), a reflected transmission of the message originating from the transmission source, wherein the reflected transmission of the message is reflected by the IRS based on one or more IRS coefficients. The method further includes determining one or more CLI measurement parameters to generate a report. The method includes transmitting, to the scheduling entity, a CLI measurement report. The method also includes receiving, from the IRS, another reflected transmission of the message originating from the transmission source using one or more configured IRS coefficients that are configured based on the CLI measurement report.

A method for establishing a direct communication using an unmanned aerial vehicle (UAV) with a reconfiguration intelligent surface (RIS) includes configuring RIS parameters based on compensating for undesired oscillations of a position and an orientation associated with the UAV. A signal reflection associated with a beam signal is steered to a target area based on the RIS parameters and by the RIS of the UAV. The signal beam is from a transmitter.

An electronic device comprises a processing circuit, which is configured to determine a base-station-side first beam transmitting direction of a base station for a direct link of a user equipment and a base-station-side second beam transmitting direction of the base station for a reflection link of a large intelligent surface (LIS). On the basis of the base-station-side first beam transmitting direction and the base-station-side second beam transmitting direction, the processing circuit determines a first scanning range of the LIS for a reflected beam of a reflection link of the user equipment and a second scanning range of the LIS for a received beam of the user equipment. Additionally, the processing circuit executes control to perform beam training on the reflection link between the LIS and the user equipment on the basis of the first scanning range and the second scanning range.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a reconfigurable intelligent surface (RIS) may receive configuration information indicating a passive beamforming and information transfer (PBIT) scheme, the configuration information being based at least in part on at least one of energy consumption of the PBIT scheme or an error performance of the PBIT scheme. The RIS may communicate information available to the RIS to the network device based at least in part on the PBIT scheme. Numerous other aspects are described.

Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) may obtain configuration information that identifies resources for sounding reference signal (SRS) positioning. The UE may transmit, to a reconfigurable intelligent surface (RIS), a plurality of SRS transmissions at different times according to the configuration information. The UE may receive, from the RIS, a plurality of SRS transmissions comprising reflections of the plurality of SRS transmissions to the RIS, wherein each of the plurality of SRS transmissions from the RIS is transmitted at a different angle of departure (AoD) from the RIS. The UE may measure each of the plurality of SRS transmissions from the RIS to produce a plurality of measurements. The UE may perform a positioning operation based on the plurality of measurements.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive configuration information identifying a set of sub-bands for receiving, via a set of reconfigurable intelligent surfaces (RISs), a signal. The UE may receive, via a first RIS of the set of RISs, the signal in a first sub-band of the set of sub-bands. The UE may receive, via a second RIS of the set of RISs, the signal in a second sub-band of the set of sub-bands. The UE may transmit, based at least in part on receiving the signal, RIS information indicating at least one of: first RIS information regarding the first RIS, or second RIS information regarding the second RIS. Numerous other aspects are described.

Schemes and mechanisms for timing advance adjustment are provided. In a method for wireless communication, a BS transmits, to a user equipment (UE), a first timing offset configuration associated with a first reconfigurable intelligent surface (RIS) state and a second timing offset configuration associated with a second RIS state. The BS transmits, to the UE, a timing offset indication indicating one of the first timing offset configuration or the second timing offset configuration. The BS receives, from the UE based on the timing offset indication, an uplink (UL) communication.

The present invention discloses a near-field broadband uplink MIMO transmission method assisted by a dynamic metasurface antenna. The method includes: Broadband signals sent by a plurality of users distributed in a near-field region are processed with a large-size dynamic metasurface antenna as a receive antenna on a base station side, which can reduce system hardware costs and power consumption; and compared with the current hybrid beamforming based on a phase shifter and a conventional antenna, hybrid beamforming based on the dynamic metasurface antenna can effectively improve transmission performance. The present invention proposes an algorithm framework jointly designing a dynamic metasurface antenna and a baseband beamformer and including method such as matrix-weighted mean square error sum (MWMSE) minimization, alternate optimization, matrix vectorization, and MM. The present invention implements near-field broadband large-scale MIMO uplink transmission assisted by a dynamic metasurface antenna with low algorithm complexity and good convergence.

A reconfigurable intelligent surface (RIS) may include a multi-directional and fully connected load impedance network may be provided. The RIS may include a plurality of elements that are each configured to receive and/or transmit signals. Each element of the RIS may be connected to each of the other elements of the RIS via a multi-directional and fully connected load impedance network. The RIS may receive feedback that comprises channel quality information for a channel between the RIS and another device. The RIS may determine routing information for the RIS based on the feedback. The routing information may comprise a mapping of ingress signals to egress signals. A first signal may be received via an ingress element. The RIS may route and phase shift the first signal to an egress element based on the determined routing information. The RIS may transmit the phase shifted first signal via the second element.

Aspects of the disclosure are directed to an apparatus configured for wireless communication. In certain aspects, the apparatus is configured to obtain, from a network node, a first codeword indicating a first incident direction of a first beam and a first reflected direction of a second beam, the first codeword being one of at least one codeword of a stage-1 codebook. In certain aspects, the apparatus is configured to obtain, from the network node, a second codeword of a stage-2 codebook, the stage-2 codebook being associated with the first codeword, the second codeword indicating a parameter of the second beam. In certain aspects, the apparatus is configured to update the second beam according to the parameter indicated by the second codeword.