A method for optimizing user equipment wireless localization using K reconfigurable intelligent surfaces reflecting signal(s) transmitted between a base station and the user equipment, the method including, whatever an a priori position of the user equipment selecting at least one reconfigurable intelligent surface to activate among the K reconfigurable intelligent surfaces, determining phases of elements of the at least one reconfigurable intelligent surface, by minimizing a predetermined cost function, depending on the a priori position, and accounting for a predetermined position error bound of the user equipment, while ensuring that at most K reconfigurable intelligent surfaces are selected, ensuring that the minimum Euclidian distance between two consecutive selected reconfigurable intelligent surfaces of a predetermined configuration, is strictly higher than a predetermined value limiting interference between additional multipath components generated by the at least one reconfigurable intelligent surface.

A method for optimizing user equipment wireless localization using K reconfigurable intelligent surfaces reflecting signal(s) transmitted between a base station and the user equipment, the method including, whatever an a priori position of the user equipment selecting at least one reconfigurable intelligent surface to activate among the K reconfigurable intelligent surfaces, determining phases of elements of the at least one reconfigurable intelligent surface, by minimizing a predetermined cost function, depending on the a priori position, and accounting for a predetermined position error bound of the user equipment, while ensuring that at most K reconfigurable intelligent surfaces are selected, ensuring that the minimum Euclidian distance between two consecutive selected reconfigurable intelligent surfaces of a predetermined configuration, is strictly higher than a predetermined value limiting interference between additional multipath components generated by the at least one reconfigurable intelligent surface.

A node including a non-planar reflective surface is disclosed. The node may receive, from a base station, an indication of a surface configuration of at least one convex reflective surface of the node. The indication may indicate that the surface configuration corresponds to at least one of a broadcast configuration or a UE-specific configuration. The node may configure, upon receiving the indication of the surface configuration, the at least one convex reflective surface based on the surface configuration. The surface configuration may correspond to at least one of the broadcast configuration or the UE-specific configuration. The node may forward communication received from, or forward communication to, the base station based on the surface configuration of the at least one convex reflective surface.

A support has a first surface and a second surface, and directions of normal vectors of the first surface and the second surface pointing outside are different from each other. A first antenna is provided on the first surface, and a second antenna is provided on a second surface. A radio frequency signal received at the first antenna is transmitted through a transmission line to the second antenna, and a radio frequency signal received at the second antenna is transmitted through the transmission line to the first antenna. The first antenna, the second antenna, and the transmission line are configured such that the directivity of the first antenna is different from the directivity of the second antenna.

A support has a first surface and a second surface, and directions of normal vectors of the first surface and the second surface pointing outside are different from each other. A first antenna is provided on the first surface, and a second antenna is provided on a second surface. A radio frequency signal received at the first antenna is transmitted through a transmission line to the second antenna, and a radio frequency signal received at the second antenna is transmitted through the transmission line to the first antenna. The first antenna, the second antenna, and the transmission line are configured such that the directivity of the first antenna is different from the directivity of the second antenna.

Examples disclosed herein relate to a meta-structure based reflectarray for beamforming wireless applications and a method of operation of passive reflectarrays in an indoor environment. The method includes receiving, by a plurality of passive reflectarrays, a Radio Frequency (RF) signal from a source. The method also includes reflecting, by the plurality of passive reflectarrays, the RF signal to generate a plurality of RF beams to a respective target coverage area, in which each of the plurality of RF beams increases a multipath gain along a signal path between a corresponding passive reflectarray to the respective target coverage area.

Examples disclosed herein relate to a meta-structure based reflectarray for beamforming wireless applications and a method of operation of passive reflectarrays in an indoor environment. The method includes receiving, by a plurality of passive reflectarrays, a Radio Frequency (RF) signal from a source. The method also includes reflecting, by the plurality of passive reflectarrays, the RF signal to generate a plurality of RF beams to a respective target coverage area, in which each of the plurality of RF beams increases a multipath gain along a signal path between a corresponding passive reflectarray to the respective target coverage area.

A passive relay device (100) relays radio communication between the inside of a radio wave shielding structure (200) and the outside of the radio wave shielding the structure (200), and the device includes an internal antenna (10) which connects with the inside, an external antenna (20) which connects with the outside, and a connection part (30) which connects the internal antenna (10) and the external antenna (20).

A passive relay device (100) relays radio communication between the inside of a radio wave shielding structure (200) and the outside of the radio wave shielding the structure (200), and the device includes an internal antenna (10) which connects with the inside, an external antenna (20) which connects with the outside, and a connection part (30) which connects the internal antenna (10) and the external antenna (20).

A system for wireless power networking, preferably including one or more nodes, such as transmit nodes, receive nodes, relay nodes, and/or hybrid nodes. The system may function to form a power network (e.g., mesh network) configured to transfer power wirelessly between nodes of the system. A method for wireless power networking, preferably including transmitting power, controlling relay nodes, and/or receiving power, and optionally including optimizing power network operation. The method is preferably performed at (e.g., by one or more nodes of) the system, but can additionally or alternatively be performed by any other suitable system(s).