A method of measuring a location of a user equipment (UE) located indoors in a wireless network includes receiving signals from a plurality of access points (APs), performing training for machine learning using the received signals or information acquired from the received signals, setting a weight vector to be applied to a relevance vector machine (RVM) method using data subjected to the training for machine learning, and applying RVM regression to the set weight vector and measured strengths of the received signals and determining whether the signals received from the plurality of APs are line of sight (LOS) signals or non line of sight (NLOS) signals.

A method and apparatus are provided for obtaining and using multiple timing advance measurements for positioning purposes. A first timing advance measurement is obtained. The first timing advance measurement is indicative of a measurement based on one or more signals of a first serving cell. A second timing advance measurement is also obtained. The second timing advance measurement is indicative of a measurement based on one or more signals of a second serving cell. A location estimate is determined based at least partially on the first timing advance measurement and the second timing advance measurement.

Methods and apparatus relating to use of actual and/or virtual beacons are described. Virtual beacons are virtual in that an actual beacon need not be transmitted but a rather a virtual beacon transmitter at a desired location may be considered to transmit virtual beacons. Beacon transmitter information indicates transmission power and location of actual and virtual beacon transmitters as well as information to be communicated by virtual beacons and is dynamically updated based on device movement, a schedule and/or the locations of devices in a group. Virtual personal beacons, virtual group beacons and virtual scheduled beacons are supported. A virtual personal beacon transmitter location is updated as the location of a device corresponding to the person moves. Reception of a virtual beacon is reported in a message sent to a wireless terminal or a component of the wireless terminal which acts upon receiving an indication of beacon reception.

A radio frequency locator system and method. First, second and third reference devices are operable to transmit a plurality of spread spectrum chirp signals frequency offset from one another. An object device is operable to receive the plurality of spread spectrum chirp signals, the object device is further operable to evaluate the received plurality of spread spectrum chirp signals for relative phase shifts between the plurality of spread spectrum chirp signals and derive a fine propagation time between the reference devices and the object device using the phase shifts between the spread spectrum chirp signals. The reference devices determine their location independent of the object device and determine the location of the object device as a function of each of their locations and of their range to the object device.

A method of locating a radiator is provided. A channel measurement vector is defined that includes a signal value measured at each of a plurality of antennas in response to a signal transmitted from a radiator. (a) A cell covariance matrix of a first cell from a plurality of cells defined for a region in which the radiator is located is selected. (b) A likelihood value that the radiator is located in the first cell is calculated using the selected cell covariance matrix and the defined channel measurement vector. (a) and (b) are repeated with each cell of the plurality of cells as the first cell. A cell location of the radiator is selected based on the calculated likelihood value for each cell of the plurality of cells.

A method in a network node and a network is provided to determine line of sight, LOS, base stations for a user equipment (UE) is provided. A request is provided to at least one of the UE and a plurality of base stations to measure and report LOS detection measurements, wherein the plurality of base stations includes base stations of a serving cell of the UE. The LOS detection measurements are received from the at least one of the UE and the plurality of base stations. LOS base stations for the UE are determined based on the LOS detection measurements. An indication of the LOS base stations is transmitted to the UE.

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. Disclosed are method and apparatus for a semi-persistent scheduling (SPS) for vehicle to everything (V2X) in a wireless communication system.

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 user equipment, user equipment method, location server, location server method and computer program are disclosed. The method performed at the user equipment comprises: monitoring for a position reference signal broadcast by a network node; measuring a time of arrival of a peak in a received signal indicative of receipt of said position reference signal and measuring a time of arrival of at least one further peak in said received signal; transmitting a time offset signal indicative of a time difference between said arrival of said at least one further peak and said peak as part of an enhanced reference time difference signal.

The invention relates to a device for transmitting an ultra-wideband-type signal, the signal including, one after the other temporally, a synchronization header and a data payload field. The transmission device includes a first generator to generate first synchronization header symbols and a third generator to generate third data payload symbols. The transmission device further includes a time sequencing device for sequencing the first and third symbols in a sequence of symbols, successively including the first symbols in the synchronization header and the third symbols in the data payload field. The transmission device further includes at least one antenna, capable of transmitting the signal including the sequence. The transmission device additionally includes a fourth generator to generate at least one fourth secret symbol, the time sequencing device being configured to insert the at least one fourth secret symbol into the sequence of symbols.