Aspects of the present application provide a system with a RIS panel with a unique geometrical shape surface, two RIS panels, also referred to as an RIS-pair, or a group of more than two RIS panels that are jointly controlled to aid wireless communication coverage holes.

This disclosure provides systems, methods, and devices for wireless communication that support enhanced RIS configuration operations. In a first aspect, a method of wireless communication includes receiving a discovery beacon from a RIS controller of a vehicle. The method also include transmitting acknowledgement information in response to the discovery beacon. The method further includes receiving reconfigurable intelligent surface (RIS) configuration information for the vehicle based on the transmission of the acknowledgement information. The RIS configuration information indicates one or more RIS configurations of a plurality of RIS configurations for one or more RISs of the vehicle. Other aspects and features are also claimed and described.

Various embodiments for beam configuration in a wireless communication system are disclosed. In one embodiment, a method for configuring a beam by a base station may include determining a beam parameter including at least one of a beam width, a beam aiming direction, and a beam transmission power of a beam based on at least one of a location and an area of a reflective surface; generating beam configuration information including at least one beam based on the determined beam parameter and transmitting the beam configuration information to a controller that controls the reflecting surface; forming the at least one beam according to the beam parameter and the beam configuration information; receiving beam quality information from the controller; and adjusting beamforming based on the received beam quality information.

Certain aspects of the present disclosure provide techniques for user equipment (UE) positioning using one or more intelligent reflecting surfaces (IRSs). A method that may be performed by a UE includes for each IRS of the one or more IRSs: identifying a first IRS reflection center, measuring a first impulse response from the IRS to obtain a first measured impulse response representation, determining a first impulse response for a first ray reflected from the first IRS reflection center of the IRS, estimating a first position of the UE based on, at least, the first IRS reflection centers for each of the one or more IRSs and the first impulse responses for each of the one or more IRSs, and estimating a second position of the UE in an iterative manner until one or more conditions are satisfied.

An assisting network device receives an incoming signal from a transmitting device. The assisting network device forwards the incoming signal to a receiving device in a beam direction based on a frequency of the incoming signal. A method of wireless communication by a first wireless device includes determining an indication of a frequency domain beam sweeping configuration of an assisting network device. The method communicates a signal with a second wireless device via the assisting network device in a beam direction based on a frequency of the signal. A method of wireless communication by a controlling entity determines a frequency domain beam sweeping configuration of an assisting network device. The method indicates the frequency domain beam sweeping configuration to a first wireless device, via the assisting network device, for communication with a second wireless device in a beam direction based on a frequency of an incoming signal.

A relay system includes: one or more radiation units configured to form a beam in a predetermined direction by radiating radio waves from each of a plurality of elements; a detection unit configured to detect a physical environment on a radio wave propagation path that affects the beam formed by the radiation unit; a direction determination unit configured to determine a direction in which the radiation unit should form the beam based on the physical environment detected by the detection unit; a phase calculation unit configured to calculate a phase of radio wave to be radiated by each of the plurality of elements such that the radiation unit forms a beam in the direction determined by the direction determination unit; and a phase control unit configured to control the phase of the radio wave radiated by each of the plurality of elements based on the phase calculated.

Methods, systems, and devices for wireless communications are described. A first device may include reflective elements and may reflect signals between a second and third device using the reflective elements. In some cases, the first device may receive signaling from the second device indicating a first subset of the reflective elements corresponding to a first phase configuration and a second subset of the reflective elements corresponding to a second phase configuration. In some other cases, the first device may receive signaling indicating a transmission beam of the second device. Here, the first device may identify the first and second subsets of the reflective elements based on an angle of arrival and departure associated with the indicated transmission beam. In either case, the first device may set the phase configurations of the reflective elements according to the first and second subsets.

Processing methods and apparatuses, communication apparatuses, and storage mediums are provided for precoding information to improve service quality in a wireless communication system. The service quality is improved by: Precoding information sent by a network-side device is obtained, an incident beam is precoded based on the precoding information to form a composite beam, and the composite beam is emitted. The provided methods can reduce the complexity of precoding.

Systems, methods, apparatuses, and computer program products for mode switching schemes for reconfigurable intelligent surface (RIS) assisted backscatter communications. The method may include connecting with a network node for communication, receiving, from the network node, an indication of activation of backscattering, receiving a backscatter signal together with a signal sent by the network node, and demodulating the backscatter signal and the signal sent by the network node, the backscatter signal including backscatter data.

A method of a reflecting node may comprise: receiving, from a first node, power control information that sets an amplification amount of a first signal transmitted from the first node to a second node in an n-th slot, n being a natural number; amplifying the first signal received from the first node based on the power control information; and reflecting the amplified first signal to the second node, wherein the power control information includes information on a mode of a reflector included in the reflecting node, a maximum transmission power of the reflecting node, a signal power expected to be received at reflecting elements of the reflecting node, a first transmission gain function, and a first parameter set.