In a second facility device whose installation location is unknown, a relative location estimator measures a wireless signal transmitted by a first facility device whose installation location is known and estimates a relative location between the first facility device and the second facility device. In a controller, a relative location receiver receives information indicating the relative location sent by the second facility device. An absolute location estimator estimates an absolute location of the second facility device based on the relative location indicated by the information received by the relative location receiver, the installation location of the first facility device, and installation specifications stipulated for the facility devices.

In a second facility device whose installation location is unknown, a relative location estimator measures a wireless signal transmitted by a first facility device whose installation location is known and estimates a relative location between the first facility device and the second facility device. In a controller, a relative location receiver receives information indicating the relative location sent by the second facility device. An absolute location estimator estimates an absolute location of the second facility device based on the relative location indicated by the information received by the relative location receiver, the installation location of the first facility device, and installation specifications stipulated for the facility devices.

A device for estimating a fixed position of a wireless communication is provided. The device comprises a radio connected to an antenna array, a memory and a process. The radio can receive a first signal transmitted from a first direction by the wireless communication device to the movable device, and a second signal transmitted from a second direction by the wireless communication device to the movable device. The processor can calculate a first angle of arrival (AOA) a second AOA. The processor can estimate the fixed position of the wireless communication device based on the first AOA, the second AOA, the first position and the second position.

A method of operating a network node of a network is provided. The network comprising a first access node and at least one second access node. The method includes establishing a first state of one or more first beams of a first transmission between the first access node and a mobile device. The method further includes determining whether a certain one of one or more second beams of a second transmission between the at least one second access node and the mobile device is to be activated, based on the first state and a predetermined mapping between the first state and a second state of the one or more second beams, the second transmission comprising positioning reference signals.

In an aspect, a user equipment (UE) may obtain an indication of one or more reconfigurable intelligent surfaces (RIS) for use during a self-localization positioning session. The UE may receive a reference signal (RS) configuration for transmitting one or more RS for the self-localization positioning session. The UE may receive a reflection schedule for at least one RIS of the one or more RIS, wherein the reflection schedule indicates one or more reflection phases of the at least one RIS for reflecting the one or more RS transmitted by the UE and corresponding times at which each reflection phase of the one or more reflection phases is activated at the at least one RIS.

An indoor positioning method includes: receiving a first measurement parameter obtained by a first device by measuring a second device in a first coordinate system, where the first measurement parameter includes a first angle and a first distance, the first angle is an angle of the second device in the first coordinate system, and the first distance is a distance of the second device relative to an origin of coordinates of the first coordinate system; determining a first spatial position of the second device in the first coordinate system based on the first angle and the first distance; and determining a spatial position of the second device in a geodetic coordinate system based on the first spatial position and a conversion relationship between the first coordinate system and the geodetic coordinate system.

A method for passively locating a radio emission source is described. The method includes receiving radio signal datasets corresponding to each of three or more sensors that includes at least one radio receiver, receiving or retrieving a physical location that define a convex hull corresponding to each sensor determining whether an emitter signal within a target frequency range is present in any of the radio signal datasets, and assigning any radio signal dataset which includes the emitter signal as a detection dataset. In response, a signal location is calculated based on arrival times of the emitter signal and the respective physical locations. A locus of possible positions is generated based on calculating two or more alternative signal locations One or more estimated radio emission source locations is output based on a respective cluster of signal locations.

A method for passively locating a radio emission source is described. The method includes receiving radio signal datasets corresponding to each of three or more sensors that includes at least one radio receiver, receiving or retrieving a physical location that define a convex hull corresponding to each sensor determining whether an emitter signal within a target frequency range is present in any of the radio signal datasets, and assigning any radio signal dataset which includes the emitter signal as a detection dataset. In response, a signal location is calculated based on arrival times of the emitter signal and the respective physical locations. A locus of possible positions is generated based on calculating two or more alternative signal locations One or more estimated radio emission source locations is output based on a respective cluster of signal locations.

A device for mapping safety equipment to predefined locations in an area of interest (AOI). The device includes a communication module configured to transmit and/or receive a radio signal, and a controller configured to receive the radio signal from one or more safety equipment using the communication module, determine a position for each of the one or more safety equipment with respect to the device based on the received radio signal, and map each of the one or more safety equipment to at least one predefined location from one or more predefined locations on the AOI based on the corresponding position of the one or more safety equipment.

A method and apparatus for determining a device pointed to by a UE is provided. The method includes determining UE pointing information based on spatial information of UWB devices; and determining a target non-UWB device pointed to by the UE based on the UE pointing information and spatial information of at least one non-UWB device. The disclosure determines a target non-UWB device pointed to by the UE in the UWB environment based on spatial perception capability of UWB and improve the user experience of UWB pointing operations.