Abstract: A method is disclosed, comprising: holding available, by a first apparatus, encrypted first positioning support data, wherein said encrypted first positioning support data are decryptable by a first decryption key, and wherein said encrypted first positioning support data are configured to enable one or more mobile devices receiving said encrypted first positioning support data and having access to said first decryption key to determine their position at least partially based on said first positioning support data; and automatically and repeatedly sending or triggering sending, by said first apparatus, said encrypted first positioning support data.

Abstract: A positioning support device holds available stored data which enables a determination of characteristics of radio signals transmitted by the positioning support device, wherein the characteristics of radio signals are expected to be observable at different locations. The positioning support device automatically and repeatedly transmits the stored data. Mobile devices may receive the data to estimate their position based on the data and based on measurements on radio signals received at their current location. The positioning support device may be caused by some other apparatus to store the data that is transmitted by the positioning support device. The data may be obtained based on characteristics of radio signals observed by at least one mobile device at each of a plurality of measurement locations.

Abstract: A method is disclosed that includes obtaining one or more first radio signal parameters of one or more first radio signals and one or more second radio signals observed by a mobile device at an observation position. The one or more first and second radio signals are radio signals of first and second radio signal types, respectively. The method also includes obtaining first and second radio map information representing first and second radio maps, respectively, for estimating a position of said mobile device based on observable radio signals of the first and second radio signal types, respectively. The method further includes determining first and second position estimates for the observation position of the mobile device at least partially based on the one or more first and second radio signal parameters and the first and second radio map information, respectively. A corresponding apparatus and computer-readable storage medium are also disclosed.

Abstract: It is disclosed to obtain a frequency transformed radiomap data set by applying a discrete frequency transform to an original radiomap data set. It is also disclosed to obtain a reconstructed radiomap data set by applying an inverse discrete frequency transform to a frequency transformed radiomap data set.

Abstract: A method performed by a mobile device is disclosed that includes obtaining one or more first radio signal parameters of one or more radio signals at a first position of the mobile device and obtaining sensor information indicating a movement of the mobile device from the first position to a second position. The method also includes obtaining one or more second radio signal parameters of the one or more radio signals at the second position of the mobile device and determining, at least partially based on the first radio signal parameters and the sensor information, whether the second radio signal parameters are expected or unexpected for the second position of the mobile device. A corresponding apparatus and computer-readable storage medium are also disclosed.

Abstract: A method for obtaining a service by a first terminal related to a network entity, the method comprising receiving information indicative of capabilities related to the network entity, and selecting one or more of the capabilities. A further method for obtaining a service by a terminal related to an assistance server comprising sending by the terminal a capability request, and receiving, in the terminal, information indicative of capabilities related to the assistance server, wherein the information indicative of capabilities comprises indications of available assistance related to the assistance server.

Abstract: A first apparatus assembles assistance data for a satellite signal based positioning of a device, the assistance data comprising a satellite specific ionospheric model for at least one specific satellite and a time stamp that relates the satellite specific ionospheric model to particular ephemeris data for the at least one specific satellite. The assistance data is provided for transmission. A second apparatus receives the assistance data and computes a position of the device making use of the particular ephemeris data and of the satellite specific ionospheric model.

Abstract: It is disclosed to obtain a frequency transformed radiomap data set by applying a discrete frequency transform to an original radiomap data set. It is also disclosed to obtain a reconstructed radiomap data set by applying an inverse discrete frequency transform to a frequency transformed radiomap data set.

Abstract: Results of measurements by a mobile device on radio signals transmitted by at least one transmitter are obtained. The results of measurements comprise characteristics of the radio signals at each of a plurality of locations of measurements at a particular site, and indications of the locations of measurement. The results of measurement and the indications of the locations are provided and used as a basis for a generation of a radio map for use in supporting a positioning of mobile devices at the site. In addition, a user input to the mobile device is detected, the user input defining a localization area at the site that is to be covered by the radio map. A representation of the defined localization area is provided in addition for use in connection with the radio map.

Abstract: An apparatus obtains results of measurements, which are performed by a mobile device on signals of communication nodes. The measurement results for each of the communication nodes include a signal strength related value and an identification of the communication node. The apparatus obtains for one of the communication nodes a stored indication of a location and a stored signal strength related value and determines a difference between measured and stored signal strength related values. The apparatus estimates the position of the mobile device based on the results of measurements and on obtained stored radio model data. In the case that the determined difference for the at least one communication node falls short of a predetermined threshold, the apparatus determines a distance between estimated position and indicated location for the at least one communication node, as an indication of a health state of stored radio model data.

Abstract: A positioning support device transmits radio signals using at least one default configuration parameter value. A mobile device measures characteristics of the signals at different locations. An apparatus assembles, based on the measured characteristics and indications of the locations of measurement, data which enables a determination of characteristics of radio signals transmitted by the positioning support device, which are expected to be observable at different locations. The apparatus determines in addition at least one adapted configuration parameter value and causes the positioning support device to store the assembled data for future transmissions and to use the at least one adapted configuration parameter value for future transmissions. As a result, the positioning support device transmits radio signals including the stored data using the at least one adapted configuration parameter value.

Abstract: An apparatus obtains fingerprints that have been collected by at least one mobile device for supporting a positioning of other mobile devices. Each fingerprint comprises 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 determines a positioning quality that can be achieved in a positioning which is based on obtained fingerprints collected by the at least one mobile device. The apparatus generates, based on the determined positioning quality, a feedback to a user of the at least one mobile device, the feedback indicating whether further fingerprints should be collected.

Abstract: A first apparatus assembles assistance data for a satellite signal based positioning of a device, the assistance data comprising a satellite specific ionospheric model for at least one specific satellite and a time stamp that relates the satellite specific ionospheric model to particular ephemeris data for the at least one specific satellite. The assistance data is provided for transmission. A second apparatus receives the assistance data and computes a position of the device making use of the particular ephemeris data and of the satellite specific ionospheric model.

Abstract: A method is disclosed that includes obtaining one or more pieces of spoofing information indicative of a data set enabling positioning based on radio signals sent by a respective radio node. The data set is further indicative of one or more parameters based on which said positioning is performed and/or controlled and which is considered to be at least partially unexpected. The method further includes aggregating spoofing information based on the one or more parameters of the respective data set of the one or more pieces of spoofing information; and providing at least a part of the aggregated spoofing information for usage in a positioning. A corresponding apparatus, computer-readable storage medium and system are also disclosed.

Abstract: A method performed by a mobile device is disclosed that includes obtaining one or more first radio signal parameters of one or more radio signals at a first position of the mobile device and obtaining sensor information indicating a movement of the mobile device from the first position to a second position. The method also includes obtaining one or more second radio signal parameters of the one or more radio signals at the second position of the mobile device and determining, at least partially based on the first radio signal parameters and the sensor information, whether the second radio signal parameters are expected or unexpected for the second position of the mobile device. A corresponding apparatus and computer-readable storage medium are also disclosed.

Abstract: A method is disclosed that includes obtaining one or more radio signal parameters of one or more radio signals observed by a mobile device at an observation position. The method also includes obtaining or holding available radio map information representing a radio map of a predetermined environment. The radio map is indicative of an expected radio environment of the predetermined environment. The method further includes determining, at least partially based on the one or more radio signal parameters and the radio map information, whether the one or more radio signal parameters are expected or unexpected. A corresponding apparatus and a computer-readable storage medium are also disclosed.

Abstract: A method is disclosed that includes obtaining one or more first radio signal parameters of one or more first radio signals and one or more second radio signals observed by a mobile device at an observation position. The one or more first and second radio signals are radio signals of first and second radio signal types, respectively. The method also includes obtaining first and second radio map information representing first and second radio maps, respectively, for estimating a position of said mobile device based on observable radio signals of the first and second radio signal types, respectively. The method further includes determining first and second position estimates for the observation position of the mobile device at least partially based on the one or more first and second radio signal parameters and the first and second radio map information, respectively. A corresponding apparatus and computer-readable storage medium are also disclosed.

Abstract: A method is provided that is performed by a mobile device at least partially under control of a positioning program. The method includes establishing or initiating establishing a secure communication path to a remote device for receiving one or more signature parameter data sets and receiving said signature parameter data set(s) via said secure communication path. The method also includes estimating a position of said mobile device at least partially based on radio signal parameter(s) obtained by said mobile device. The position data are obtained as a result of said estimating. The method further includes determining a digital signature of said position data at least partially based on at least one of said signature parameter data set(s). The method also includes providing said position data and said signature data to one or more application programs. A corresponding device and computer-readable storage medium are also provided.

Abstract: A method, apparatus and computer-readable storage medium are provided that maintain a database including information identifying of one or more mobile devices. Each mobile device of the one or more mobile devices is configured to enable positioning based on radio signals. The positioning enabled by the respective mobile device is considered to be at least partially unexpected.

Abstract: Systems and methods are provided to allow for the use of existing satellite identification parameters generically, so as to allow for Global Navigation Satellite System (GLONASS) identification. In addition, an optional or conditional parameter is linked to the satellite identification parameter for a frequency identification, where frequency identification is indicative of a Frequency Division Multiple Access (FDMA) frequency value. Such a frequency identification parameter is optional as it is needed only for current GLONASS and/or near-future GLONASS (e.g., GLONASS-M) satellites. Hence, utilization of the frequency identification parameter maybe unnecessary and therefore, not included/not linked when considering next generation GLONASS satellites, e.g., GLONASS-K satellites. Additionally, signals supported by particular global positioning system (GPS) satellites can be indicated with the use of generic satellite identification.