A method is disclosed for estimating one or more user terminal locations over a target coverage area by wireless signals transmitted by one or more access points and reflected by one or more reconfigurable intelligent surface panels. The method includes transmission of one or more pilot signals by each of the one or more access points, reflecting, by at least one of the one or more reconfigurable intelligent surface panels, the one or more pilot signals according to one or more predetermined reflection patterns, receiving the reflections by the user terminal, extracting one or more features from the reflections, and estimating of a user terminal location by a method based on a database comprising pairs of locations and the one or more features.

A method, controller and network node for using intelligent surfaces in a wireless communication system are disclosed. According to one aspect, method in a network node configured to communicate with a wireless device (WD), via a reconfigurable reflective surface, the reconfigurable reflective surface being controllable by a controller and being applied to a structure to controllably reflect signals exchanged between the network node and the WD. The method includes determining a configuration of the reconfigurable reflective surface associated with the WD, the determined configuration being associated with a particular reflection coefficient, transmitting to the controller of the reconfigurable reflective surface, an indication of the determined configuration, and receiving signals from the WD at least partially via reflection at the reconfigurable reflective surface.

An example method of positioning of a target UE in a presence of one or more RIDs, the method performed by a server and may comprise receiving, from the target UE, information of the one or more distributed RIDs indicating at least one or more positions of the one or more distributed RIDs, wherein the one or more distributed RIDs are used for link enhancement of a wireless link between the target UE and one or more radio access network (RAN) nodes configured for positioning the target UE, and wherein the one or more distributed RIDs are not directly controlled by the server. The method may also comprise positioning the target UE based at least in part on the information of the one or more distributed RIDs.

Provided are a reconfigurable intelligent surface, a communication method using the reconfigurable intelligent surface, and a transceiver device including the reconfigurable intelligent surface. The reconfigurable intelligent surface may include a plurality of unit cells arranged in a mesh form, a beam steering module electrically connected to the plurality of unit cells, and at least one sensing module electrically connected to the plurality of unit cells, wherein the plurality of unit cells may include a plurality of reflection unit cells configured to reflect at least one signal incident thereon in a direction set by the beam steering module, and a plurality of sensing unit cells configured to obtain phase information of the at least one signal and transmit the phase information to the at least one sensing module.

A signal conversion method and device for generating a modulation signal are provided. The signal conversion method includes receiving an input signal and a reflection coefficient of a reconfigurable intelligent surface (RIS) according to a sample time, selecting an optimized reflection coefficient of the RIS corresponding to the sample time, and generating the modulation signal by applying the optimized reflection coefficient of the RIS to the input signal.

Aspects of the present disclosure provide an over-the-air (OTA) interferometer that enables transmitting by a source and redirecting by a RIS, to a destination, one or more reference signals over multiple time-frequency resources. The time frequency resource may be time slots. In each time-frequency resource, phases of one or more reference signals may be modified. Signal strength measurements may be made at the destination during the multiple time-frequency resources and used to determine a phase difference between the reference signals received at the destination. Examples of different types of source and destination may be devices such as a base station, an access point, a transmit receive point (TRP) and user equipment (UE).

A positioning reference signal provision method includes: transmitting, from a UE directly to a telecommunication device other than a repeater, a first UL-PRS of a first type of UL-PRS; and transmitting, from the UE to a RIS, a second UL-PRS of a second type of UL-PRS.

A communication control method for controlling a relay apparatus configured to relay a radio signal between a base station and a user equipment in a time division duplex system includes a step of performing a downlink relay operation of relaying a downlink signal from the base station to the user equipment, a step of performing an uplink relay operation of relaying an uplink signal from the user equipment to the base station after or before the downlink relay operation, and a step of performing, in a time period between a downlink time period during which the downlink relay operation is performed and an uplink time period during which the uplink relay operation is performed, operation switching between the downlink relay operation and the uplink relay operation at a predetermined timing within the time period.

Presented are systems and methods for resource indication. A network node may receive at least one of (i) beam information and (ii) time domain information from a wireless communication node. The time domain information can be to indicate a time interval in which the beam information can be to be applied by the network node.

A real-time radio intelligent controller (RIC) executes in parallel with one or more virtual radio access network functions to provide real-time analytics and control of the virtual radio access network functions. At least a first processor core is configured to execute a radio network virtual function. The radio network virtual function is configured with a codelet to output selected operational data to a first stream associated with a first stream ID and receive control information from a control stream associated with a second stream ID. At least a second processor core is configured to execute the real-time RIC isolated from the at least the first processor core. The real-time RIC includes one or more dynamically loaded programs configured to: access the first stream; perform processing on the operational data; and write commands for the radio network virtual function to the control stream.