Sigfox

Unabiz

Renaud Marty

Juan Carlos Zuniga

Olivier Isson

Guillaume Larignon

Sofiane Dhouib

Perrine Gissot

Julien Boite

A method for geolocating a terminal of a wireless communication system. A set of reference elements is determined with the aid of messages transmitted by calibration terminals during a calibration phase. Each reference element includes a radio signature and a geographical position of a calibration terminal when a message is transmitted. A refinement phase makes it possible to clean and/or to enrich the set of reference elements by virtue of the identification of points of interest corresponding to preferential positions of transmission of messages by the terminals. During a search phase, the position of a terminal of interest is determined based on its radio signature and of the modified set of reference elements.

Method and system for geolocating a terminal occupying particular geographical positions

A method for geolocating a terminal of a wireless communication system from measurements of a parameter representative of a radio signal exchanged between the terminal and base stations of the communication system. The method uses fixed base stations and a mobile base station which is displaced in a determined search area. During a predefined search period, the terminal emits several radio signals to the fixed base stations and the mobile base station. A precise geographical position can then be determined, on the one hand, from the measurements carried out during the search period for the different base stations, and on the other hand, from the geographical positions of the fixed base stations and from the geographical positions of the mobile base station at the different times of emission of the radio signals by the terminal.

Method and system for geolocating an object using a mobile base station

A method for estimating the geographical position of a terminal of interest, among a panel of terminals of a wireless communication system. For each terminal of the panel, a time signature including values measured for each terminal during a predetermined observation period is determined. Values of similarity between the time signatures of the terminals of the panel is calculated, a similarity value calculated for two terminals representing the probability of the terminals being moved together or having been located at the same place during the observation period. Various terminals of the panel are partitioned into different groups depending on the similarity values. The geographical position of the terminal of interest is estimated as a function of the available geolocation data for at least one other terminal of the group to which the terminal of interest belongs.

Method and system for geolocation of group-evolving terminals

A method of notifying of the information determined by a terminal to an access network of a wireless communication system by the terminal. Evaluation of a predetermined criterion for motion detection as a function of measurements provided by a motion sensor. Time stamping of the motion detected, when the motion detection criterion is satisfied, by storing an instant of detection of the detected motion. Determination of respective start times and end times of mobility phases of the terminal, as a function of the instants of detection. Determination of information by the terminal as a function of the respective start times and end times of the mobility phases of the terminal. Formation of a notification message including the information determined. Transmission of the notification message.

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Ramonville Saint Agne, France

Renaud Marty