A method for assisting in position determination in a wireless communication system comprises obtaining (S1) of pairs of radio frequency environment data sets for each of a plurality of common positions. A pair of radio frequency environment data sets comprises radio frequency environment data of devices of a first access technology and a second access technology at a common position. A transformation operator is created (S2) based on the pairs. The transformation operator represents a relation between radio frequency environment data sets of the first and second access technology. A method for position determination in a wireless communication system based on transformation operator and network nodes therefore is also disclosed, as well as network nodes for performing the methods.

Example methods, apparatuses, and/or articles of manufacture are disclosed herein that may be utilized, in whole or in part, to facilitate and/or support one or more operations and/or techniques for selective crowdsourcing for multi-level positioning, such as positioning in a multi-level structure, for example.

A server performs: acquiring measurement data of a mobile terminal; extracting fixed AP measurement data of a specific fixed AP; extracting measurement data including a measurement time of which a difference from the measurement time in the fixed AP measurement data is equal to or less than a threshold value, position information of which a difference from a position of the specific fixed AP is equal to or less than a threshold value, and a reception intensity of which a difference from the reception intensity in the fixed AP measurement data is equal to or less than a threshold value as target measurement data and to set the radio access point corresponding to the target measurement data as a target AP; and determining whether the target AP corresponds to a fixed AP on the basis of the measurement data corresponding to the target AP and the fixed AP measurement data.

According to an example, a signal space based navigation apparatus may receive traces of wireless signal observations and corresponding pedestrian deadreckoning (PDR) traces between different ones of the wireless signal observations from a plurality of user devices. A plurality of wireless clusters may be generated based on the traces of wireless signal observations. A PDR displacement vector may be generated between two or more of the wireless clusters based on the two or more of the wireless clusters and a subset of the PDR traces corresponding to the two or more of the wireless clusters. A sensing map may be generated based on the plurality of wireless clusters and a plurality of PDR displacement vectors including the PDR displacement vector.

A method of determining locations of access points in a venue, one or more electronic devices configured to receive radio signals from the access points, the method comprises: generating and storing, at a server in communication with the one or more electronic devices, a database comprising information received from the one or more electronic devices, the information comprising: values associated with a radio signal characteristic of the radio signals at locations of RF scan capture by the one or more electronic devices and access point identifiers representing access points corresponding to the values, the locations of RF scan capture being unknown at a time of RF scan capture; assigning correlation values to quantify similarity between the values for pairs of the access point identifiers; mapping the correlation values to correlation ranges based on known locations of at least two of the access points; determining the locations of the access points based on the correlation ranges and the known locations.

Methods and systems are disclosed for improving reliability in mobile device positioning. A mobile device generates position data for a device, receives a first access point position reliability state associated with the first access point, determines a reliability of the position data based on the first access point position reliability state and an estimated location of the first access point, determines a threshold reliability requirement of an application associated with the mobile device, compares the reliability of the position data to the threshold reliability requirement of the application, and provides the position data of the device based on the comparison. A network entity determines access point characteristics associated with an access point, generates a position reliability state for the access point, sends the position reliability state to a mobile device, receives position data associated with the mobile device, and determines a trustworthiness of the position data.

An apparatus obtains test data, which comprises radio samples with associated indications of reference locations. The apparatus estimates for each of a plurality of representations of a radio environment positions based on the radio samples of the test data and on the respective representation. Each representation has been generated based on a different selection of batches of fmgerprints. Each fmgerprint comprises a radio sample and an indication of a location of measurement. Each radio sample includes a characteristic of a radio signal transmitted by at least one beacon and an identification of the respective beacon. The apparatus determines for each representation a positioning performance by comparing the estimated positions with the reference locations. Based on the determined positioning performances, the apparatus determines whether any batch of fmgerprints is to be excluded from further use and/or which representation is to be used as a valid representation of the radio environment.

Disclosed is an approach for detecting that a state of an air-conditioning system in a building has changed and ultimately determining the air-conditioning system's operating pattern, which could help improve collection and/or use of crowdsourced data for an indoor positioning solution and thus lead to more accurate position estimates. According to the disclosed approach, processor(s) may receive pressure and movement data from a mobile device. The pressure data may indicate a pressure change, and the movement data may indicate a movement pattern of the mobile device that occurred substantially during the pressure change. Given this, processor(s) could make a determination that the movement pattern lacks a substantial change in altitude of the mobile device during the pressure change and could use this determination as basis to detect that the state of the air-conditioning system has changed.

A method, apparatus and computer readable storage medium determine the position of a mobile device. Position data items are collected that indicate if the mobile device was located in a vicinity of a predetermined public transportation building when the respective position parameter was captured. Motion data items are also collected that represent a respective motion parameter captured by the mobile device within the vicinity of the predetermined public transportation building. Based on the positioning data item(s), the motion data item(s) and/or public transportation data, it is determined if the mobile device has left the vicinity of the predetermined public transportation building on board a public transportation vehicle and/or has arrived at the vicinity of the predetermined public transportation building on board a public transportation vehicle and, if so, the motion data item(s) are associated with a boarding or waiting and/or arrival area for passengers of the public transportation vehicle.

The embodiments herein relate to method performed by a radio network node, a network node, a method performed by a UE, a UE, a method performed by a location server and a location server. The method performed by the network node includes: transmitting at least one signal to other network nodes; detecting signals transmitted from said other network nodes; measuring the signal strength of each received signal; transforming said measured signal strengths into a reference point or into measurement data; and transferring or transmitting the reference point or the measurement data to a location entity or a location node or a location server in the network.