A system reduces duplicate signaling in a wireless network using a reconfigurable intelligent surface (RIS) mounted on a structure and positioned in a signal path between a transmitter and a receiver. The RIS includes passive reflecting elements electrically connected to control circuitry. The control circuitry receives a RIS configuration allowance parameter from a Master Information Block message and uses this parameter to adjust both phase shifts of the passive reflecting elements and multi-input multi-output (MIMO) beamforming. The unified control through a single parameter coordinates RIS and MIMO operations while reducing signaling overhead.

Methods and apparatuses are provided in which a slot is generated including a symbol and a synchronization signal, which is transmitted through the symbol. The slot is transmitted to a reconfigurable intelligent surface (RIS) and a user equipment (UE). The symbol is used to determine an operation to be performed by the UE during a predetermined time period including the slot. The slot is transmitted to the UE through beams formed according to a first RIS pattern. A result of measuring each beam based on the beams is received from the UE. A second RIS pattern is determined for transmitting data based on the result of measuring each beam. A signal for controlling the first RIS pattern based on the second RIS pattern is transmitted to the RIS. A data signal is transmitted to the UE through the RIS. The second RIS pattern is applied to the RIS.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first network node may communicate a reference signal using at least one antenna element disposed at one or more locations on a radio frequency reflection array associated with the first network node. The first network node may communicate with a second network node based at least in part on a characteristic of the reference signal. Numerous other aspects are described.

The technology described herein is directed towards a reconfigurable intelligent surface that receives and redirects incoming electromagnetic signals based on power efficient subarrays of unit cells. Each subarray integrates a power amplifier and tunable attenuator device to selectively amplify and/or selectively attenuate the reflected signal. For example, the power amplifier and tunable attenuator device can be shared by a mn (e.g., 33) subarray of unit cells, which can be arranged as a module of a larger reconfigurable intelligent surface. Proper impedance matching between the power amplifier and the reconfigurable intelligent surface elements is maintained by using a matching circuit to minimize signal reflection. The system design thus facilitates receiving and reflecting the electromagnetic signal by coupling the RF energy, processing, amplifying, and attenuating. The technology further facilitates estimation of the angle of arrival of the incoming signal.

This document generally relates to wireless communication systems that involve one or more intelligent reflecting devices. A plurality of second nodes that communicate with a first node may be grouped into node groups based on one or more communication parameters between the plurality of second nodes and an intelligent reflecting device. In turn, the first node may transmit signals to the plurality of second nodes via the intelligent reflecting device according to a time schedule based on the node grouping. In addition or alternatively, an intelligent reflecting device may include surface elements that are divided into multiple surface element regions. The first node may communicate with the multiple surface element regions independently in order to service the plurality of second nodes.

It discloses a communication system design method based on an intelligent omni-surface, comprising step 1: constructing an optimization problem by minimizing a total power consumption of the communication system as an objective function, the communication system being a communication system based on an intelligent omni-surface; step 2: setting a constraint condition for the optimization problem constructed in the step 1, the constraint condition comprising a minimum rate constraint of a user, a phase shift constraint of the intelligent omni-surface and a length constraint of an allocated time slot; and step 3: solving the optimization problem after setting with the constraint condition to obtain solution for minimizing the total power consumption of the system. When lowest rate requirements of all users are met, the method reduces the total power consumption of the system and realizes omnidirectional coverage of a communication area, and has a good application value.

The technology described herein is directed towards a reconfigurable intelligent surface that receives and redirects incoming electromagnetic signals based on power efficient subarrays of unit cells. Each subarray integrates a power amplifier and tunable attenuator device to selectively amplify and/or selectively attenuate the reflected signal. For example, the power amplifier and tunable attenuator device can be shared by a mn (e.g., 33) subarray of unit cells, which can be arranged as a module of a larger reconfigurable intelligent surface. Proper impedance matching between the power amplifier and the reconfigurable intelligent surface elements is maintained by using a matching circuit to minimize signal reflection. The system design thus facilitates receiving and reflecting the electromagnetic signal by coupling the RF energy, processing, amplifying, and attenuating. The technology further facilitates estimation of the angle of arrival of the incoming signal.

Disclosed embodiment of 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: receive, from an IRS manager, a scheduling data request. The one or more processors further causes the network device to transmit, to the IRS manager, responsive to the received scheduling data request, a scheduling data response and receive, from the IRS manager, an IRS resource command, wherein the IRS manager transmits the IRS resource command responsive to the scheduling data response. Further, the one or more processors causes the network device to transmit to an IRS controller associated with the IRS, the received IRS resource command, wherein IRS controller is configured to allocate the IRS resources to each of the plurality of UEs based on the IRS resource command.

A method for controlling Reconfigurable Intelligent Surface (RIS) networking, a controller, and a storage medium are disclosed. The method may include: determining a first RIS and a second RIS from a plurality of RISs; and sending first configuration information corresponding to the first RIS to the first RIS and the second RIS, for the first RIS and the second RIS to perform codebook configuration processing.

A state of a user equipment (UE) may depend on a state of a reconfigurable intelligent surface (RIS). The UE obtains a time pattern of a RIS that defines activation states of the RIS including at least an off-state and an on-state. The UE determines a state of the UE based at least in part on the time pattern of the RIS. The base station also determines the state of the UE and schedules communications with the UE when the UE is in an active state. The UE may measure channel conditions between the UE and a base station when the RIS is in at least the off-state and the on-state. The state of the UE may also be based in part on the channel conditions between the UE and the base station when the RIS is in at least the off-state and the on-state.