Abstract: A system obtains navigation data for Galileo from at least one terrestrial apparatus. The obtained navigation data corresponds to navigation data transmitted by a Galileo satellite. The system assembles assistance data comprising navigation data for Galileo and further data in an interrelated manner such that a message authentication codes (MACs) included for the navigation data for Galileo is usable for verifying authenticity of the further data as well. The system transmits the information to a device, which verifies the authenticity of the included navigation data for Galileo based on the MACs. Only in case the navigation data for Galileo in the assistance data is determined to be authentic, it considers the further data to be authentic.

Abstract: A system with at least one device obtains assistance data for Galileo for a current time from at least one terrestrial apparatus. The system predicts assistance data for Galileo for a plurality of subsequent time instants based on the obtained assistance data for Galileo and associates for each subsequent time instant a separate message authentication code with the predicted assistance data. The system causes transmission of information comprising at least the predicted assistance data for Galileo and the associated message authentication codes to a satellite signal receiver.

Abstract: 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.

Abstract: A method is disclosed including determining an indicator information indicative of one or more indicators of a current usage of an electronic device, determining a condition information indicative of if the electronic device is rigidly positioned with respect to a user, wherein the condition information is determined based, at least in part, on the determined indicator information. It is further disclosed an according apparatus, computer program and system.

Abstract: An apparatus obtains results of measurements of a mobile device on radio signals transmitted by a radio transmitter at a site. The results include at least an identifier of the radio transmitter and an indication of a received signal strength of the radio signals. A plurality of radio transmitters are distributed at the site. The apparatus compares the received signal strength with a threshold. If the received signal strength exceeds the threshold, the apparatus causes a notification of a user of the mobile device, obtains an indication of a location based on a user input identifying a location on a map of the site, the map presented on a display of the mobile device, and causes storage of the identifier of the radio transmitter and the indication of the location as approximate location of the radio transmitter.

Abstract: The disclosure inter alia relates to method, performed by at least one apparatus. The method includes obtaining information indicative of a use of an interfloor connector by a user of a mobile device; determining one or multiple potentially used interfloor connectors; and determining a horizontal position estimate of said mobile device at least based on one or multiple horizontal positions of said one or multiple determined potentially used interfloor connectors. The disclosure also relates to an apparatus including at least one processor and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause an apparatus at least to perform the method.

Abstract: A system obtains from each of a plurality of mobile devices a batch of data for a site. A batch includes data enabling a determination of a reference position, sensor data of motion sensors and sets of results of measurements performed by the mobile device on radio signals at different locations, each set including at least one indication of a received signal strength of radio signals and an associated identifier of at least one radio transmitter transmitting the radio signals. In at least two iterations, the system processes each batch to determine for each mobile device a (refined) sequence of fingerprints associating a respective position, which is based on the at least one reference position, the sensor data (and estimated characteristics of radio transmitters), with each set of results of measurements; and estimates characteristics of the radio transmitters based on the (refined) sequences of fingerprints.

Abstract: A method is disclosed comprising: obtaining a plurality of pieces of estimation information, the obtaining comprising receiving or determining the plurality of pieces of estimation information, wherein each of the plurality of pieces of estimation information represents one or more respective absolute values of an altitude, wherein each of the one or more absolute values of an altitude is associated with a respective position information, each of the plurality of pieces of estimation information determined based, at least in part, on a respective relative altitude information and, at least in part, on a respective absolute altitude information associated with a data element of a database comprising map data representing an altitude map; and aggregating the plurality of pieces of estimation information in a spatial grid, wherein the spatial grid is divided into a plurality of grid points. It is further disclosed an according apparatus, computer program and system.

Abstract: A method is disclosed comprising: obtaining a plurality of pieces of estimation information, the obtaining comprising receiving or determining the plurality of pieces of estimation information, wherein each of the plurality of pieces of estimation information represents one or more respective absolute values of an altitude, wherein each of the one or more absolute values of an altitude is associated with a respective position information, each of the plurality of pieces of estimation information determined based, at least in part, on a respective relative altitude information and, at least in part, on a respective absolute altitude information associated with a data element of a database comprising map data representing an altitude map; and aggregating the plurality of pieces of estimation information in a spatial grid, wherein the spatial grid is divided into a plurality of grid points. It is further disclosed an according apparatus, computer program and system.

Abstract: A method is disclosed comprising: determining at least one relative altitude information based, at least in part, on at least one pressure information, wherein the at least one relative altitude information is indicative of a relative value of an altitude, determining at least one absolute altitude information associated with a data element of a database comprising map data, wherein the at least one absolute altitude information is indicative of an absolute value of an altitude, determining an estimation information based, at least in part, on the determined relative altitude information and, at least in part, on the determined absolute altitude information, wherein the estimation information represents an absolute value of an altitude. It is further disclosed an according apparatus, computer program and system.

Abstract: A device obtains at least one characteristic of at least one radio signal detected at a mobile device that is located at a particular site and a representation of a radio environment for the site and a definition of at least one specified path section for the site. The at least one path section has been specified by a person in a map presented on a display. The device determines a location estimate for the mobile device based on the at least one characteristic of the at least one radio signal and based on the representation of the radio environment for the site and adjusts the determined location estimate based on the definition of at least one specified path section.

Abstract: The disclosure relates to a method, performed by at least one apparatus. The method may include obtaining new opportunity signal data pertaining to an opportunity signal source and indicating opportunity signal values for particular locations at a site; obtaining previous opportunity signal data pertaining to said opportunity signal source and indicating opportunity signal values for particular locations at said site; comparing at least a part of said opportunity signal values of said new opportunity signal data pertaining to said opportunity signal source of said site and said opportunity signal values of said previous opportunity signal data pertaining to said opportunity signal source of said site for corresponding locations at said site; and classifying said opportunity signal source based at least in part on said comparing.

Abstract: It is disclosed a method including obtaining, via a user interface, information being associated with a location of a map, the location of the map being considered to be associated with a problem.

Abstract: 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.

Abstract: The disclosure relates to a method, performed by at least one apparatus. The method may include obtaining new opportunity signal data pertaining to an opportunity signal source and indicating opportunity signal values for particular locations at a site; obtaining previous opportunity signal data pertaining to said opportunity signal source and indicating opportunity signal values for particular locations at said site; comparing at least a part of said opportunity signal values of said new opportunity signal data pertaining to said opportunity signal source of said site and said opportunity signal values of said previous opportunity signal data pertaining to said opportunity signal source of said site for corresponding locations at said site; and classifying said opportunity signal source based at least in part on said comparing.

Abstract: An apparatus estimates successive headings of a mobile device based on respective results of measurements by the mobile device on radio signal transmitted by a plurality of transmitters to obtain estimated headings (201). It computes a mean heading based on a predetermined number of the estimated headings and computing a standard deviation of the predetermined number of estimated headings (202). It determines whether the mean heading is to be considered valid based on the computed standard deviation of the estimated headings (203). Finally, it provides an indication of the mean heading as an indication of a current heading of the mobile device for use by a specific application only if the mean heading is determined to be considered valid (204).

Abstract: It is disclosed a method comprising one or more of the following: a first determining whether or not at least one characteristic that has been derived from a coverage map being representative of respective coverage areas of a plurality of beacons deployed in an area is affected at least by a count of the beacons deployed in the area and to their respective positions and affects an accuracy of a positioning of one or more terminals located in the area that is at least based on the coverage map and on respective fingerprints provided by the one or more terminals, is considered at least partially insufficient, and a providing, in case the first determining has come to an affirmative result, of first information on the at least one characteristic considered at least partially insufficient and/or on instances that at least contributed to the at least one characteristic being considered at least partially insufficient; a second determining, at least based on one or more fingerprints received from one or more termin

Abstract: In a system a map of a site is presented on a display. A user input specifying at least one path section in the map on the display is detected. A definition of the at least one path section is stored. A representation of a radio environment stored for the site is provided as positioning assistance data. The representation of the radio environment enables a determination of a location estimate for a mobile device at the site based on at least one characteristic of at least one radio signal detected by the mobile device at the site. The definition of the at least one specified path section is provided for enabling an adjustment of a determined location estimate.

Abstract: A device obtains at least one characteristic of at least one radio signal detected at a mobile device that is located at a particular site and a representation of a radio environment for the site and a definition of at least one specified path section for the site. The at least one path section has been specified by a person in a map presented on a display. The device determines a location estimate for the mobile device based on the at least one characteristic of the at least one radio signal and based on the representation of the radio environment for the site and adjusts the determined location estimate based on the definition of at least one specified path section.

Abstract: 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.