A diversity transmission method, a terminal, and a network-side device are provided. The diversity transmission method includes: determining, by a terminal, a target encoded codeword; and performing, by the terminal, diversity transmission based on the target encoded codeword, where the target encoded codeword meets a target encoding structure; the target encoded codeword is an encoding matrix with N?N dimensions; N=2.sup.k, and k is a positive integer; the target encoding structure includes a first basic element, a second basic element, a first generation element, and a second generation element; the first generation element is an opposite number of a conjugate operation result of the first basic element, and the second generation element is a conjugate operation result of the second basic element; and the first basic element, the second basic element, the first generation element, and the second generation element are complex numbers or block matrices.

The present disclosure may include receiving, by a terminal in a wireless communication system, at least one reference signal from a base station, generating channel status information after channel measurement based on the at least one reference signal, and giving feedback on the generated channel status information to the base station, wherein the at least one reference signal may be a reference signal that is transmitted from the base station to the terminal through a reconfigurable intelligent surface (RIS), and first beamforming transmitted from the base station to the RIS may be determined based on the feedback.

Certain aspects of the present disclosure provide techniques for a method for wireless communication by a first wireless entity, comprising: receiving signaling from a second network entity to configure reconfigurable intelligent surface (RIS) elements based on a direction of a target incident signal and a direction of a target reflected signal, and configuring the RIS elements based on the direction of the target incident signal and the direction of the target reflected signal and to randomize reflections, based on the signaling.

Embodiments of a system, device and method for suspending sharing of a reflection-based communication element. In some aspects, a wireless communication method includes sending, by a first wireless communication node to a second wireless communication node, a first message to suspend sharing of a reflection-based communication element between the first wireless communication node and the second wireless communication node, wherein the reflection-based communication element keeps sharing configuration parameters from the first wireless communication node and the second wireless communication node.

Aspects of the present disclosure provide techniques for configuring RIS components in order to achieve a certain object. According to certain aspects, a first device may participate in a first training procedure to obtain a set of channel estimates corresponding to different paths between a second device and the first device involving reflections from different reconfigurable intelligent surface (RIS) components, participate in a second training procedure, using the set of channel estimates, to obtain a combining vector of coefficients to configure the RIS components based on at least one objective, and communicate with the second device with the RIS components configured according to the combining vector.

Methods, systems, and devices for wireless communications are described. The described techniques provide for a network entity to indicate a desired beamforming coverage scheme to a controller of a reconfigurable intelligent surface (RIS). The RIS controller may identify one or more realizable multi-lobe beamforming patterns in accordance with the desired beamforming coverage scheme, and may transmit multi-lobe beam information indicating the one or more realizable multi-lobe beamforming patterns to the network entity. In some cases, the RIS may indicate single-lobe beam information to the network entity, and the network entity may transmit one or more vectors to support generating the multi-lobe beam information. In some examples, based on the multi-lobe beam information, the network entity may indicate a multi-lobe beamforming pattern that the RIS is to use for relaying a multi-lobe reflect beam or a multi-lobe incident beam.

Embodiments of a sixth generation (6G) network device in communication with one or more Intelligent Reflecting Surface (IRSs) and one or more UEs are disclosed. In an embodiment, the 6G network device includes one or more processors coupled to a memory storing a set of instructions which when executed by the one or more processors cause the network device to compute IRS tilt information associated with the one or more IRSs based at least in part on one or more of signal-to-noise-plus-interference ratio (SINR) information, Reference Signal Received Power (RSRP) information, and Reference Signal Received Quality (RSRQ) information received from the one or more UEs. The one or more processors further cause the network device to communicate the computed IRS tilt information to the one or more IRSs via a network interface, wherein the IRS tilt information is used to control one or more operational aspects of the one or more IRSs.

Methods, systems, and devices for wireless communications are described. A network entity may utilize parameterized codebooks to support reconfigurable intelligent surface (RIS)-assisted communications. For example, a network entity may receive an indication of one or more codebooks associated with respective sets of parameters including one or more of a respective field of view (FOV) or a respective configuration switching latency, among other parameters. The network entity may select a codebook for RIS-assisted communications based on whether the codebook satisfies one or more thresholds. The network entity may indicate the codebook to a RIS controller and may communicate one or more messages with a user equipment (UE) using a RIS in accordance with the indicated codebook.

A method of communication in a cellular network is described. The method comprises establishing, by at least one first node. a connection with at least one second node. At least one first node receives capability information of the at least one second node. One or more of the at least one first node. the at least one second node. and at least one third node calibrate a channel among one or more of the at least one first node. the at least one second node, and at least one third node. The at least one first node transmits control information to the at least one second node. based on at least one of the calibration information and the capability information. The at least one second node beamforms signals transmitted to and received from the at least one third node

Provided in the present disclosure are a terminal and a sending device in a communication system. The sending device includes: a receiving unit, which is configured to receive position information of a terminal, and a control unit, which is configured to determine a first codeword in a first codebook and offset information according to the position information. The first codeword indicates initial phases of at least some array elements in a reconfigurable intelligent surface (RIS). The offset information indicates an offset relative to the at least one of the at least some array elements, the initial phases, and a reference position of the RIS.