Patent application number | Description | Published |
20090006514 | METHOD AND DEVICE FOR NUMERICALLY GENERATING A FREQUENCY - To generate a digital signal at a given frequency, a step of calculating at least one trigonometric function for consecutive phases separated by a phase gap φ | 01-01-2009 |
20120278044 | METHOD AND DEVICE FOR MANAGING TRANSMISSIONS OF MEASUREMENTS PERIODICALLY CARRIED OUT BY A SENSOR - A method and device are provided for managing transmissions of a plurality of sets of measurements performed periodically by a measurement sensor capable of communicating with a collection device via a radio network. The method determines, according to a random distribution law, a date of transmission for each set of measurements of the plurality and transmits a message relating to at least one set of measurements, on one of the dates of transmission determined for the plurality. | 11-01-2012 |
20140074929 | PROTECTION AGAINST THE DETECTION OF ALERT SIGNALS - A method of communicating between at least one event detector sensor and a collector of event detection data transmitted by the sensor in the form of an event signalling message whose modulation is defined by at least one spreading code. The method comprises the steps implemented by the sensor of, upon detection of an event, generation of data of event detection, of reception of a synchronization message emitted by the collector, the synchronization message comprising a seed for a pseudo-random generation of at least one spreading code and of pseudo-random generation of at least one spreading code on the basis of the seed. The method furthermore comprises a step of emitting an event signalling message whose modulation is defined by the at least one spreading code generated randomly, the event signalling message comprising the event detection data. | 03-13-2014 |
20140137210 | METHOD OF PROCESSING A DATA PACKET ON TRANSMISSION, A METHOD OF PROCESSING A DATA PACKET ON RECEPTION, AND ASSOCIATED DEVICES AND NODES - A method is provided for processing a data packet on reception, where the data packet is transmitted by a first node to a second node over a link of a wireless electronic communications network. The packet includes a header and payload data. The method includes a step of receiving the data packet in two stages, a first stage of receiving the header and a second stage of receiving the payload data. The first stage includes the following steps performed by the second node on receiving a header of the data packet: detecting in the received preamble an authentication preamble for authenticating the link; using the data packet authentication preamble to authenticate the link; and in the event of the authentication having a positive result, deciding to trigger the second stage of receiving the payload data from the data packet. | 05-15-2014 |
20140233398 | MULTI-HOP ROUTING PROTOCOL - Disclosed is a method for calculating a route for a transfer of data between a source node and a destination node via at least one intermediate node in a network comprising a plurality of nodes, which, for a current node of said route, comprises a set of nodes adjacent to said current node. The method is suitable for selecting a selection law from a set of selection laws and for choosing an intermediate node according to the current node, by applying the selected law to all or a portion of the nodes of the predetermined set for the current node. Also disclosed is a node-forming device which implements the route calculation method. | 08-21-2014 |
20150055578 | METHOD OF ROUTING DATA IN A NETWORK OF SENSORS - A method is provided for routing data received during a first time window by a node-forming device of a network having a plurality of nodes suitable for communicating over a wireless communications channel. The method is adapted to select a time slot from a set of predefined time slots in a second time window consecutive with the first time window, to monitor the communications channel between the end of the first time window and the selected time slot in order to detect the presence or the absence of a signal on the channel, and to broadcast the data from an instant of the selected time slot in the event of detecting the absence of a signal and not to broadcast in the event of detecting the presence of a signal. Also provided is a node-forming device that performs the routing method. | 02-26-2015 |