Time and effort to generate an electric field map to realize high-accuracy positioning is reduced. In an electric field map generation device (10) that generates an electric field map in which RSSI obtained when radio waves transmitted from a beacon (60) are observed at each of a plurality of points in the same space is associated with each of coordinates at the plurality of points, a radio wave strength acquisition unit (12) acquires RSSI observed at each of at least three observation points different in distance from the beacon (60), a space propagation characteristics estimation unit (14) estimates space propagation characteristics of the radio waves transmitted from the beacon (60) in the same space using the acquired RSSI at the observation points, a radio wave strength estimation unit (16) estimates RSSI at estimation points on the basis of the estimated space propagation characteristics and distances between the estimation points different from the observation points and the beacon (60), and a generation unit (18) generates the electric field map (26) using the RSSI at the observation points and the estimation points.

Various embodiments relate to the generation and/or use of a positioning map comprising instances of neighbor-cell information that each comprising, are associated with, and/or indexed by a respective globally unique identifier. In an example embodiment, a processor determines a locally unique identifier and an estimated location of an observed neighbor cell. The processor defines a globally unique identifier for the neighbor cell comprising the locally unique identifier and an indication of the estimated location of the neighbor cell. The processor generates a positioning map to include an instance of neighbor-cell information corresponding to the neighbor cell. The instance of neighbor-cell information comprises, is associated with, and/or is indexed by the defined globally unique identifier. The instance of neighbor-cell information may be accessed via an observed locally unique identifier when determining a position estimate for a computing entity that observed a neighbor cell corresponding to the observed locally unique identifier.

Systems and methods are described for automated detection of border conflicts in physical radiofrequency (RF) communication network infrastructures. For example, proposed sector antennas in a greenfield physical network deployment may be licensed to radiate in certain spectrum blocks in the mapped licensed geographic regions (mLGR) where they are located, but the licenses may not permit radiated power in those spectrum blocks to cross into adjacent mLGRs. Embodiments compute radiation contours for the sector antennas indicating estimated local power levels computed based on antenna characteristics of the sector antennas and propagation model data that defines geographic morphologies for the mLGRs. The radiation contours are analyzed to detect any border conflict conditions where the estimated local power levels exceed defined threshold radiation levels in unlicensed regions. A culprit set of the sector antennas can be output to indicate those responsible for detected border conflict conditions.

A wireless device for indoor positioning has a satellite positioning system, a transceiver, a motion measurement system, and a position estimation system. The satellite positioning system is configured to determine a location of the device based on received satellite positioning signals. The wireless local area network transceiver is configured to measure while in the areas of non-reception, signals transmitted by wireless local area network (WLAN) access points (APs). The motion measurement system is configured to measure movement of the wireless device. The position estimation system is configured to determine a reference location, and record measurements of movement. The reference location and the recorded measurements are to be provided to a positioning database that generates a positioning grid.

A method is disclosed including determining at least one floor detection parameter based on a floor characteristic of a building; using the floor detection parameter in a floor detection process or providing the floor detection parameter for use in a floor detection process. Furthermore, a method is disclosed, including receiving at least one floor detection parameter determined based on a floor characteristic of a building, and using the at least one floor detection parameter in a floor detection process. According apparatuses, computer programs and systems are also disclosed.

An apparatus obtains fingerprints that have been collected by at least one mobile device for supporting a positioning of other mobile devices. Each fingerprint comprising results of measurements on radio signals of at least one communication node at a particular location and an indication of the particular location. The apparatus estimates values of parameters defining a radio model for the at least one communication node based on the obtained fingerprints. The apparatus determines a quality of the radio model. The apparatus generates data for a feedback for a user of the at least one mobile device based on the determined quality of the radio model.

An information processing apparatus includes a reception unit, a first storage unit, a first processor, a second storage unit, a third storage unit, and a second processor. The second processor executes a process of specifying a place by place specifying data of a partial area stored in the second storage unit based on a signal received by the reception unit, and a process of updating the place specifying data of the partial area stored in the second storage unit and an identification information of an access point stored in the third storage unit through the first processor when the identification information of the access point detected from the signal received by the reception unit is stored in the third storage unit.

The present invention discloses a method and an apparatus for localization and mapping based on RFID, applicable for real-time mapping of an area to be localized in which at least one RFID tag is arranged, the method comprises: taking a location of a first RFID tag as a coordinate origin of a coordinate system when information of the first RFID tag is obtained by a mobile electronic device which is moving along a certain trajectory for a first time; moving the mobile electronic device with the coordinate origin as a starting point to traverse the entire area to be localized, calculating coordinates of an obstacle based on a location of the mobile electronic device when the mobile electronic device detects the obstacle; constructing a map based on the recorded information and coordinates of the RFID tags and coordinates of each obstacle when the traversal has been finished.

A method of setting up a tracking system of the type including a plurality of spaced-apart stationary nodes for tracking mobile nodes within a tracking environment, the method including using an independent localisation system to determine respective locations of at least a subset of the stationary nodes within the tracking environment.

Techniques for providing access point (AP) vicinity information are disclosed. In one example, the techniques include determining a first set of vicinity information corresponding to signal values for an AP at a set of grid points for the coverage area of the AP, encoding the first set of AP vicinity information based at least on a difference between AP vicinity information values for adjacent grid points to generate a second set of AP vicinity information, and providing the second set of AP vicinity information to a device. In one example, the techniques include receiving, for a set of grid points, a first set of AP vicinity information that is compressed based at least on a difference between AP vicinity information values for adjacent grid points, and performing decompression to obtain a second set of AP vicinity information corresponding to signal values for an AP at the set of grid points.