Abstract: The invention relates to a modular communication device having a master element with a control unit and bidirectional electrical control input-outputs, a series of modular elements having an upstream connection interface with a series of upstream input-output terminals disposed in locations forming a predetermined pattern, a downstream connection interface having a series of downstream input-output terminals disposed in locations forming the same predetermined pattern, a plurality of bidirectional electrical links connecting an upstream input-output terminal to a downstream input-output terminal in such a manner as to form a circular permutation between the ranks of the upstream and downstream input-output terminals electrically connected in pairs, and in which one of the electrical links is a local control link having an electronic communications module, the modular elements being connected to one another.

Abstract: The invention relates to a method for geolocating a signal-transmitting device, the geolocation method comprising: a. supplying positions of a plurality of stations and dates of reception of the radio signal by said stations, b. selecting a reference station, c. defining a scanning zone, d. subdividing the scanning zone as a function of a scanning granularity, e. for each subzone, calculating a degree of cumulative error of said subzone, f. selecting a subzone exhibiting a minimal degree of cumulative error, g. defining a new scanning zone, h. defining a new scanning granularity, i. iterating the method from the step d).

Abstract: A method for geolocating a signal-transmitting device, the geolocation method including: supplying first data of reception by a plurality of first reception stations of a first radio signal transmitted at a first frequency, calculating a first geographic position of the signal-transmitting device, detecting that the geographic position of the signal-transmitting device is included in a predefined second geographic zone, transmitting a signal instructing transmission of a second radio signal, supplying second data of reception of the second radio signal by a plurality of second reception stations according to a second frequency, and calculating a second geographic position of the signal-transmitting device.

Abstract: A method for resolving an IP address, includes a step of receiving an address resolution request, the request including a datum representative of a MAC address; a step of looking up, within a data structure, an IP address, depending on the datum representative of a MAC address; and a step of transmitting said IP address.

Abstract: A method for geolocating a signal-transmitting device, the geolocation method including: supplying first data of reception by a plurality of first reception stations of a first radio signal transmitted at a first frequency, calculating a first geographic position of the signal-transmitting device, detecting that the geographic position of the signal-transmitting device is included in a predefined second geographic zone, transmitting a signal instructing transmission of a second radio signal, supplying second data of reception of the second radio signal by a plurality of second reception stations according to a second frequency, and calculating a second geographic position of the signal-transmitting device.

Abstract: The invention relates to a method for controlling the load of a data concentration gateway for a wireless communication network, the method comprising: —receiving a plurality of data signals from a plurality of remote client devices, —providing the communication start date of each data signal received, —selecting a received data signal, —determining a communication end date of each data signal received, —determining a number of data signals received by the gateway that are different from the selected data signal, which have a communication end date that is between the communication start date of the selected data signal and the communication end date of the selected data signal, —comparing the number of data signals to a threshold number, and —emitting an alarm signal in response to the detection that the number of data signals is greater than the threshold number.

Abstract: A method for establishing a communication between a gateway and a communication module, comprising: periodically radiobroadcasting from a gateway a synchronization signal, the duty cycle DC=Dx/Tx between the duration of the emission window Dx of the synchronization signal and the duration of the radiobroadcasting period Tx being less than 50%; periodically activating a receiver of a communication module activated during an awake window, the duration of the awake window being less than the duration Tr of the activation period, the duration Tr of the activation period being equal to Tr=Tx/(1+DC); receiving the synchronization radio signal by the receiver of the communication module during an overlap between a said awake window and a said emission window; radiobroadcasting a data message from an emitter of the communication module; and receiving the data message by a receiver of the gateway.

Abstract: The invention relates to a modular communication device having a master element with a control unit and bidirectional electrical control input-outputs, a series of modular elements having an upstream connection interface with a series of upstream input-output terminals disposed in locations forming a predetermined pattern, a downstream connection interface having a series of downstream input-output terminals disposed in locations forming the same predetermined pattern, a plurality of bidirectional electrical links connecting an upstream input-output terminal to a downstream input-output terminal in such a manner as to form a circular permutation between the ranks of the upstream and downstream input-output terminals electrically connected in pairs, and in which one of the electrical links is a local control link having an electronic communications module, the modular elements being connected to one another.

Abstract: A method for establishing a communication between a gateway and a communication module, comprising: periodically radiobroadcasting from a gateway a synchronization signal, the duty cycle DC=Dx/Tx between the duration of the emission window Dx of the synchronization signal and the duration of the radiobroadcasting period Tx being less than 50%; periodically activating a receiver of a communication module activated during an awake window, the duration of the awake window being less than the duration Tr of the activation period, the duration Tr of the activation period being equal to Tr=Tx/(1+DC); receiving the synchronization radio signal by the receiver of the communication module during an overlap between a said awake window and a said emission window; radiobroadcasting a data message from an emitter of the communication module; and receiving the data message by a receiver of the gateway.

Abstract: A gateway architecture able to meet the challenges raised by the large-scale deployment of wireless sensor networks. The main modules within such a gateway for wireless sensor networks, for example digital radio modems and analog radio interface modules take the form of various separate physical blocks that may be joined together. This technique makes it possible to implement adaptable and scalable modular gateways that may be quickly and easily configured or suited to any situation, simply by replacing existing physical blocks or adding new physical blocks.

Abstract: A gateway architecture able to meet the challenges raised by the large-scale deployment of wireless sensor networks. The main modules within such a gateway for wireless sensor networks, for example digital radio modems and analog radio interface modules take the form of various separate physical blocks that may be joined together. This technique makes it possible to implement adaptable and scalable modular gateways that may be quickly and easily configured or suited to any situation, simply by replacing existing physical blocks or adding new physical blocks.

Abstract: A method for resolving an IP address, includes a step of receiving an address resolution request, the request including a datum representative of a MAC address; a step of looking up, within a data structure, an IP address, depending on the datum representative of a MAC address; and a step of transmitting said IP address.

Abstract: A method and apparatus are provided for near field communication, which implement at least one communication reader configured to exchange data with at least one nomadic object. The method includes detecting a presence in the vicinity of the communication reader, delivering activation information, when a presence is detected, activating the power supply of the communication reader, upon reception of the activation information, and authorizing a self-service access according to at least one of said data exchanged.