A method is proposed for operating a re-configurable reflective device, RRD, the RRD being re-configurable to provide multiple spatial filters, each one of the multiple spatial filters being associated with a respective input spatial direction from which incident signals on a data radio channel are accepted and with a respective output spatial direction into which the incident signals are reflected by the RRD. The method comprises: receiving, by the RRD from a first communication node, CN1, on a positioning radio channel different from the data radio channel, a CN1 reference signal, determining, by the RRD, an estimated CN1 angle of arrival of the CN1 reference signal, and reconfiguring the RRD based on the estimated CN1 angle of arrival.

A first communication apparatus receives first indication information, used to determine an operating mode and/or operating configuration information of the first communication apparatus in a backhaul network, the first communication apparatus includes a first antenna array. The first antenna array is an electromagnetic metasurface antenna array. The first communication apparatus establishes the backhaul network based on the first indication information. A backhaul network is established by using an electromagnetic metasurface antenna array, to implement a flexible and high-performance D-MIMO transmission solution.

In some example embodiments, there may be provided an apparatus. The apparatus may include a surface including at least one electro-magnetic reflective element programmed to provide a plurality of reflected signals, such that the plurality of reflected signals constructively adds at a location of a receiver of the plurality of reflected signals. Related systems, methods, and articles of manufacture are also described.

Systems, methods, apparatuses, and computer program products for initialization and operation of intelligent reflecting surface. The method may include transmitting a synchronization signal block burst to a reflection surface device. The method may also include receiving a first measurement report of the synchronization signal block burst received at the reflection surface device. The method may further include determining a transmit beam for a subsequent synchronization signal block burst based on a highest strength of signals in the synchronization signal block burst. In addition, the method may include receiving a second measurement report of the subsequent synchronization signal block burst. Further, the method may include determining an arrival angle of the subsequent synchronization signal block burst at the reflection surface device. The method may also include establishing a connection with the reflection surface device based on the transmit beam and the arrival angle.

In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. In some aspects, the apparatus may be a user equipment (UE) or a component thereof; however, in some other aspects, the apparatus may be a base station or a component thereof. The apparatus may be configured as a wireless node that configures an intermediary apparatus to reflect signals for the wireless node and another wireless node. The apparatus may be further configured to communicate a set of sensing signals with the other wireless node using the intermediary apparatus. The apparatus may be further configured to sense an object based on a set of measurements associated with the set of sensing signals.

Systems, methods, apparatuses, and computer program products for intelligent reflecting surface configuration. The method may include scanning for synchronization signal blocks and reflection surface synchronization signal blocks during a cell search at a frequency on a synchronization raster. The method may also include determining whether a synchronization signal block or a reflection surface synchronization signal block is detected as a result of the scanning. The method may further include selecting a detected synchronization signal block or a detected reflection synchronization signal block based on a measurement metric of the detected synchronization signal block and the detected reflection synchronization signal block. In addition, the method may include performing an access procedure with a network element using the selected synchronization signal block or the selected reflection synchronization signal block.

An electronic device, includes an intelligent reflecting surface and an electronic device controller. The intelligent reflecting surface is configured to reflect all or a part of a received signal. The electronic device controller is configured to control the intelligent reflecting surface to determine a first phase of the intelligent reflecting surface to increase a relay gain of first data of the received signal, determine a second phase related to second data, and control a phase of the intelligent reflecting surface based on a sum of the first phase and the second phase to reflect the first data and the second data to a receiving device by beamforming.

Certain aspects of the present disclosure provide techniques for acquiring location information of an assisting node, such as an assisting transmission and reception point (TRP). The location information may include geographical location information as well as spatial information. The location information may be used to facilitate positioning and other purposes, such as beam management, interference management, and sensing between one or more assisting TRPs and one or more network entities (e.g., a gNodeB (gNB), a user equipment (UE), a central unit (CU), or a distributed unit (DU)). To achieve these purposes, accurate locations of the assisting TRPs are needed. The present disclosure provides techniques for acquiring and exchanging the accurate location information of such assisting TRPs.

The disclosure relates to a 5G or a 6th generation (6G) communication system for supporting a higher data transmission rate after a 4th generation (4G) communication system such as LTE. An operating method of a BS in a wireless communication system includes broadcasting a power signal of an IRS, broadcasting an SSB, and requesting receive beam reporting from a control unit of the IRS.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a first signal associated with a downlink control channel, wherein the first signal uses a modulation signature that identifies a first security key associated with a reconfigurable intelligent surface (RIS), and wherein the first signal includes a second security key. The UE may receive a second signal associated with a downlink shared channel, wherein the second signal includes a third security key, and wherein the second signal is authenticated by the UE based at least in part on the first security key, the second security key, and the third security key. Numerous other aspects are described.