Abstract: An apparatus assembles positioning assistance data using a predetermined version of a set of values of parameters. The positioning assistance data relates to radio signals of a particular positioning support device. The apparatus encrypts the positioning assistance data using an encryption key that is associated with this version and causes the particular positioning support device to transmit the assembled and encrypted data. The positioning support device transmits the data. An apparatus obtains the data, received by a mobile device, and attempts to decrypt the data using at least one encryption key. If the decryption is successful with a particular encryption key, a version of a set of values of parameters may be selected that is associated with the encryption key.

Abstract: A method includes obtaining or holding available boundary information representing boundary of an indoor environment for which an indoor radio positioning map is to be updated and/or generated, determining whether a current position of a mobile device is in a vicinity of said indoor environment at least partially based on said boundary information; if it is determined that said current position of said mobile device is in a vicinity of said indoor environment, collecting or triggering collecting radio fingerprint observation reports by said mobile device, wherein said radio fingerprint observation reports are collected for updating and/or generating said indoor radio positioning map. Furthermore, a corresponding apparatus and system are disclosed.

Abstract: It is disclosed to obtain physical layout data of a radiomap based on a plurality of location information representatives, each of the location information representatives being associated with a radiomeasurement.

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: It is disclosed to obtain an observation data set comprising respective identification information of one or more observed radio nodes of an environment and respective radio measurements values determined with respect to the one or more observed radio nodes; to determine respective association measures for the observation data set with respect to respective radiomap data sets of two or more levels of the environment, wherein the radiomap data sets respectively comprise respective identification information of one or more radio nodes of the environment observable at the level of the respective radiomap data set and respective radio measurement value information for these one or more observable radio nodes; and to determine an estimate of a level associated with the observation data set based at least on the association measures.

Abstract: An apparatus obtains at least one fingerprint sample for at least one communication node, wherein each fingerprint sample of the at least one fingerprint sample comprises results of a measurement performed by a mobile device at a particular position on a signal of a communication node of the at least one communication node including at least a signal strength related value (201); and determines, for at least one fingerprint sample of the at least one fingerprint sample, whether the respective fingerprint sample fulfills an inconsistency criterion, wherein the inconsistency criterion is based on the signal strength related value of the respective fingerprint sample and a distance value indicative of an estimated distance between the mobile device and the communication node associated with the fingerprint sample (202).

Abstract: An apparatus obtains a set of radio data comprising signal strength related values for radio signals transmitted by a transmitter with an association of each signal strength related value with a representation of a geographical location (201). The apparatus applies a frequency transform to the obtained set of radio data to obtain transform coefficients, each transform coefficient comprising a transform index and an associated transform value (202). The apparatus selects a subset of transform indices having more significant transform values than the remaining transform indices (203) and compresses the transform indices by encoding each transform index exploiting a probability of occurrence of an index value of a respective transform index (204). The same or another apparatus decodes the compressed transform indices again for use in position operations.

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: A method performed by an apparatus is presented which comprises determining one or more potential installation positions and/or areas for installing one or more radio positioning support devices in a predetermined environment, wherein said one or more potential installation positions and/or areas are determined at least partially based on at least one radio coverage model.

Abstract: The invention relates to determination of a location of a device of a user. In a methods, information of signal strength of one or more wireless signals and information of signal strength distribution of wireless signals is obtained by a device. The information of signal strength and the information of signal strength distribution are used to determine at least one likelihood whether the device is inside an area. In the method radio maps representing signal strength distribution in the building may be used.

Abstract: The invention relates to determination of a location of a device of a user. In a methods, information of signal strength of one or more wireless signals and information of signal strength distribution of wireless signals is obtained by a device. The information of signal strength and the information of signal strength distribution are used to determine at least one likelihood whether the device is inside an area. In the method radio maps representing signal strength distribution in the building may be used.

Abstract: An apparatus assembles positioning assistance data using a predetermined version of a set of values of parameters. The positioning assistance data relates to radio signals of a particular positioning support device. The apparatus encrypts the positioning assistance data using an encryption key that is associated with this version and causes the particular positioning support device to transmit the assembled and encrypted data. The positioning support device transmits the data. An apparatus obtains the data, received by a mobile device, and attempts to decrypt the data using at least one encryption key. If the decryption is successful with a particular encryption key, a version of a set of values of parameters may be selected that is associated with the encryption key.

Abstract: A method performed by at least one apparatus is inter alia disclosed, said method comprising: obtaining measurement data on a location-specific quantity of a signal transmitted by a transmitter; obtaining location information associated with said measurement data on said location-specific quantity; and determining, based on said obtained measurement data and said obtained location information, one or more model parameters of a model describing said location-specific quantity in dependence of location, wherein said model assumes a location dependence of said location-specific quantity in form of a combination of a first location-specific function and a second location-specific function.

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: An apparatus obtains results of measurements by a mobile device on radio signals transmitted by a plurality of transmitters, the results of measurements comprising characteristics of the radio signals at the location of measurement. The apparatus estimates a position of the mobile device based on the obtained results of measurements and based on assistance data including information on expected characteristics of radio signals of various transmitters at various locations. The apparatus matches a distribution of characteristics of radio signals in the obtained results of measurements with a reference distribution of characteristics of radio signals. Alternatively or in addition, the apparatus determines matching transmitters for which characteristics are available in the results of measurements and in the assistance data, and matches a determined expected distribution for the matching transmitters with a predetermined reference distribution.

Abstract: A system receives user input based information that allows deriving an identifier of a first radio transmitter, wherein a database stores, associated with the identifier of the first radio transmitter, information that allows deriving expected characteristics of radio signals of the first radio transmitter at different locations of a site. The system moreover receives a user input based indication of a replacement of the first radio transmitter at the site. The system receives user input based information that allows deriving an identifier of a second radio transmitter replacing the first radio transmitter at the site. The system updates the database by associating the information that allows deriving expected characteristics of radio signals of the first radio transmitter at different locations of the site with the identifier of the second radio transmitter.

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: 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 method includes obtaining or holding available boundary information representing boundary of an indoor environment for which an indoor radio positioning map is to be updated and/or generated, determining whether a current position of a mobile device is in a vicinity of said indoor environment at least partially based on said boundary information; if it is determined that said current position of said mobile device is in a vicinity of said indoor environment, collecting or triggering collecting radio fingerprint observation reports by said mobile device, wherein said radio fingerprint observation reports are collected for updating and/or generating said indoor radio positioning map. Furthermore, a corresponding apparatus and system are disclosed.

Abstract: An apparatus obtains at least one fingerprint sample for at least one communication node, wherein each fingerprint sample of the at least one fingerprint sample comprises results of a measurement performed by a mobile device at a particular position on a signal of a communication node of the at least one communication node including at least a signal strength related value (201); and determines, for at least one fingerprint sample of the at least one fingerprint sample, whether the respective fingerprint sample fulfills an inconsistency criterion, wherein the inconsistency criterion is based on the signal strength related value of the respective fingerprint sample and a distance value indicative of an estimated distance between the mobile device and the communication node associated with the fingerprint sample (202).