Methods and apparatus are disclosed for positioning a vehicle. An apparatus for determining positioning information for a vehicle may comprise a plurality of receive coil circuits and a hardware processor. The plurality of receive coil circuits is configured to generate voltage signals from a magnetic field. The hardware processor is configured to generate position estimates of a position of the magnetic field generator with respect to a position of the plurality of receive coils. Each of the first sequence of position estimates is determined based upon a corresponding voltage vector derived from the voltage signals and at least one of a plurality of reference vectors. The hardware processor is configured to update the plurality of reference vectors based upon the first sequence of position estimates and a second sequence of position estimates generated based upon a source different from the plurality of receive coil circuits.

UE location determined by collecting and preprocessing signal data at a detector and sending extracted data to a remote locate server. The detector buffers samples from signals provided by receive channels, detects known reference signals from receive channels based on reference signal parameters, isolates symbols carrying the reference signal from frames, extracts data from symbols, and sends extracted data to locate server. The locate server receives the extracted data, estimates locate observables based on the extracted data and calculates the UE location based on the estimated locate observables, the reference signal parameters and the extracted data. The detector and/or the server may also generate correlation coefficients between reference signals carrying spectrum received from a serving cell and utilize the correlation coefficients to cancel a serving cell signal in symbols that include known in advance reference signals from the serving cell and one or more neighboring cells of the wireless system.

A technique for estimating the location of a wireless terminal at an unknown location in a geographic region is disclosed. The technique is based on the recognition that there are location-dependent traits of electromagnetic signals. In environments where multiple antennas are radiating the same signal, as in the case of distributed antennas or host-repeater configurations, one or more possible locations of the wireless terminal can be designated as improbable based on i) a measure of the propagation delay of a signal traveling between a) a base station and b) the wireless terminal or an infrastructure antenna, or ii) the maximum distance at which a signal is detectable by the wireless terminal. Additionally, the applicable set of values for the location-dependent traits is selected based on similar criteria.

Method and system for radiolocation of RF transmitter in the presence of multipath interference. RF receivers are spatially separated at known locations in a moderate multipath environment in the vicinity of the transmitter. Upon detection of a received active RF signal associated with the transmitter, the receivers are directed to acquire measurements of the detected RF signal. Each receiver obtains a sequence of measurements of the RF signal at different positions along a trajectory that provides multiple measurements at relative phase differences between the direct-path and the multipath reflections of the detected RF signal. The receivers may be repositioned automatically or manually, or prearranged or selectively deployed at fixed positions along the trajectory. TDOA measurements between pairs of receivers are calculated based on the obtained measurements, and are averaged to provide a respective updated TDOA measurement value for each receiver pair, which is used to determine the transmitter location.

Methods, systems, and storage media are described for the measurement and reporting of user equipment (UE) positioning in cellular networks. Other embodiments may be described and/or claimed.

Apparatuses, methods, and systems are disclosed for configuration corresponding to a reconfigurable intelligent surface controller. One method includes providing a capability report to a location management function. The capability report corresponds to reconfigurable intelligent surfaces used for positioning. The method includes transmitting control information to a reconfigurable intelligent surface controller for reflecting a positioning reference signal received from a transmitting device and directed to a receiving device. The method includes transmitting a multi-port positioning reference signal configuration to the receiving device. The method includes transmitting, to the receiving device, information indicating to report measurements corresponding to multi-port positioning reference signals reflected from multiple reconfigurable intelligent surfaces.

UE positioning is added by use of a reconfigurable reflecting surface (e.g., IRS). The IRS is configured to adjust elements of the surface. The configuration may include signal switching on or off, signal phase, group delay, or signal amplitude. Positioning reference signal transmissions are performed that have line of sight to the UE and that reflect off the IRS. The UE takes measurements for the transmissions and can determine measurement(s) of angle of arrival or time of arrival or reference signal received power, and/or determine a channel estimation. Multiple methods are proposed to provide UE positioning.

Some embodiments use scanning devices to characterize radio signals received at a number of locations within a geographical area of interest. The signal characteristics along with the location information associated with the characteristics are stored in a centralized reference database. A mobile device characterizes signals it receives at a certain location and compares the characteristics with the signal characteristics stored in the reference database to obtain accurate location information of the certain location.

A signal measurement assistance method includes: obtaining reference signal angle information comprising first indications indicating a first reference signal and a first expected angle of arrival of the first reference signal; and at least one of: requesting a transmission/reception point (TRP) to transmit, to a user equipment, the first indications; or requesting the TRP to search for the first reference signal based on the first expected angle of arrival.

A server, a communication system, and a positioning method based on mobile network thereof are provided. In the method, a first measurement report and a second measurement report are received. The first measurement report is related to a first network performance measurement of a user equipment (UE) with a mobile network and includes first location information of the UE, and the second measurement report is related to a second network performance measurement of the UE with the mobile network. The Second location information of the UE is determined according to a monitoring result obtained from the second measurement report. The monitoring result is related to the signal transmission condition of the UE in the mobile network. The second location information is calibrated according to the first location information. Accordingly, the accuracy of the location of the UE may be improved.