Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may belong to a group of UEs that includes at least a second UE and a third UE. The first UE may perform a channel access procedure and, when the channel access procedure is successful, may transmit a first positioning reference signal (PRS) over a sidelink communication link to the second and third UEs. The first UE may transmit the first PRS during a first time interval of a transmission window. Based on receiving the first PRS, the second UE may perform a channel access procedure and may transmit a second PRS to the first UE during a second time interval of the transmission window. The second PRS may be multiplexed (e.g., using frequency division multiplexing (FDM) or code division multiplexing (CDM)) with at least a third PRS transmitted by the third UE.

Positioning of a target user equipment (UE) using a mobile anchor node is supported by providing motion information for the mobile anchor node and/or measurement restrictions. The target UE receives motion information for the mobile anchor node, which may be an ordered list of points or, e.g., a motion path. The target UE may generate positioning measurements using the motion information for the mobile anchor node to determine the position of the mobile anchor node when it transmits positioning reference signals (PRS). The target UE may receive an indication of position measurement restriction if the mobile anchor node is moving. The target UE may receive PRS over a plurality of PRS occasions. The target UE may restrict measurement to only one PRS occasion, may generate and separately report measurements for each PRS occasions or may combine a plurality of measurements using filter coefficients provided by a location server.

Disclosed are techniques for positioning. In an aspect, a network entity receives, from at least one network node, a measurement report including one or more radio frequency fingerprint (RFFP) measurements, wherein the one or more RFFP measurements include at least one RFFP measurement of at least one sidelink channel between a first user equipment (UE) and a second UE, determines one or more locations of a target UE based on the one or more RFFP measurements and a machine learning module, wherein the machine learning module is trained based on previously collected RFFP measurements of one or more downlink channels, RFFP measurements of one or more uplink channels, RFFP measurements of one or more sidelink channels, locations of one or more sidelink anchor UEs, locations of one or more base stations, or any combination thereof.

An apparatus, method and computer program is described comprising: receiving, at a user device, positioning signals from each of a plurality of nodes of a mobile communication system, wherein the positioning signals comprise first positioning signals received from each of one or more fixed nodes of the mobile communication system and second positioning signals received from each of one or more mobile nodes of the mobile communication system; determining relative angles of arrival of positioning signals between a first plurality of pairs of said nodes; determining a collinearity indication for each of the pairs of nodes of the first plurality, wherein each collinearity indication is based on the respective determined relative angles of arrival of said positioning signals; and selecting at least some of the plurality of pairs of nodes for use in positioning refinement, wherein the selecting is based, at least in part, on the determined collinearity.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a mobile station may receive first information identifying a value for a threshold parameter associated with a sidelink positioning procedure. The mobile station may transmit second information identifying a suitability for anchoring the sidelink positioning procedure, wherein the suitability is associated with the value for the threshold parameter. Numerous other aspects are described.

Apparatus and methods of artificial intelligent based provision of digital content where and when the digital content is needed based upon where a user is located and a purpose for accessing the content as well as credentials of a user seeking to access the digital content. Persistent digital content is linked to location coordinates. More specifically, the present invention links a physical onsite location with digital content to enable a user interface with augmented reality that combines aspects of the physical area with location specific digital content. In addition, access to digital content may be limited to users in defined access areas.

The invention relates to a guidance system for leading an aircraft to a reference point, characterised in that it comprises: An active beacon capable of emitting a first electromagnetic signal in a first emission cone, defined by an apex coinciding with the reference point, a first beam angle and a first axis corresponding to an emission direction; and a multi-beam radar, installed on board the aircraft, operating in reception mode and capable of performing deviation measurements on a signal received from the active beacon, the multi-beam radar comprising an antenna adapted for receiving in at least two spatially separate reception cones.

In an aspect, a user equipment (UE) may control one or more reconfigurable intelligent surfaces (RIS) in accordance with one or more RIS schedules that indicate times when the one or more RIS are in an enabled state and times when the one or more RIS are in a disabled state. The UE may request at least one participating UE of one or more participating UEs to transmit at least one positioning reference signal (PRS) in a PRS resource. The UE may measure the at least one PRS from the at least one participating UE in accordance with the RIS schedule to make one or more measurements of the at least one PRS when the one or more RIS are in the disabled state and to make one or more measurements of the at least one PRS when the one or more RIS are in the enabled state.

A method is provided for estimating at least one characteristic of a signal received by a receiver, the signal having been transmitted in succession by a plurality of antennas in successive time segments, each segment being dedicated to one separate antenna, the signal being modulated into the form of pulses according to ultra-wideband modulation. The method includes steps of: receiving and digitizing the signal, computing the product of multiplication of each symbol of the received signal by the complex conjugate of the corresponding transmitted symbol, for each segment and for each symbol of the signal received for this segment, estimating a phase error by means of a phase-locked loop applied to the product, for each segment, determining a reference phase by means of a linear regression applied to the phase errors estimated for all of the segments, determining, for at least one pair of antennas, a phase difference between the signals transmitted by the antennas of the pair, on the basis of the difference between the reference phases computed for the segments associated with the antennas.

A system for identifying a location of one or more assets in a predefined two-dimensional area comprises at least three tracking stations and one or more tracking tags. Each tracking station selectively emits a vertical laser line upon which is embedded a unique identifier, selectively sweeps its laser line about its central axis such that each tracking station's laser line sweeps across at least a portion of the predefined 2-D area, and selectively transmits a current angle of its laser line as its laser line sweeps about its central axis. Each tracking tag detects a laser line from at least three tracking stations within its line of sight. Each tracking tag decodes the unique tracking station identifier, receives the current angle from the tracking station corresponding to the detected laser line, and stores the decoded unique tracking station identifier and the received current angle.