Abstract: A method for detecting a resending of a frame, each frame sent that includes an identifier and a counter, the counter remaining identical during a resending, each frame sent being received by a plurality of gateways, each gateway retransmitting each frame to a central server, a response delay being predefined, the method comprising the steps of receiving a first frame comprising an identifier and a counter, storing as reference parameters a first reception time and the counter, receiving a second frame comprising the same identifier and another counter, and, if the values of the counters are equal then determining a second reception time of the second frame, and, if the difference between the reception times is greater than the response delay, then the second frame is a resending of the first frame, and updating the reference parameters with the second reception time.

Abstract: A method for detecting a resending of a frame, each frame sent that includes an identifier and a counter, the counter remaining identical during a resending, each frame sent being received by a plurality of gateways, each gateway retransmitting each frame to a central server, a response delay being predefined, the method comprising the steps of receiving a first frame comprising an identifier and a counter, storing as reference parameters a first reception time and the counter, receiving a second frame comprising the same identifier and another counter, and, if the values of the counters are equal then determining a second reception time of the second frame, and, if the difference between the reception times is greater than the response delay, then the second frame is a resending of the first frame, and updating the reference parameters with the second reception time.

Abstract: A method for managing the allocation, by a server of a wide area communication network, of a first list of carrier frequencies that can be used by an electronic device for sending messages, the method including determining a second list of carrier frequencies, receiving a first message from the electronic device via a first carrier frequency not included in the second list, determining the value of a quality parameter associated with the first message received, when this value exceeds the value of a first threshold; determining a first sub-list of the second list, including at least one second carrier frequency not included in the first list, determining a second sub-list of the first list, including at least a third frequency not included in the second list, and sending to the electronic device a second message to replace the carrier frequencies of the second sub-list with those of the first sub-list.

Abstract: Method for a communication system comprising an electronic device and a plurality of gateways, the electronic device and each gateway being adapted for sending and receiving frames on a radio frequency band, each gateway being connected to the same central server, a first frame being sent by the electronic device to the central server, the frame comprising an identifier of the electronic device, each gateway receiving said frame and transmitting the received frame, in association with an identifier of the gateway, to the central server, a response delay being predefined for responding to the first frame, the method allowing selection by the central server of a gateway among the plurality of gateways for sending a second frame to the electronic device in response to the first frame.

Abstract: Method for a communication system comprising an electronic device and a plurality of gateways, the electronic device and each gateway being adapted for sending and receiving frames on a radio frequency band, each gateway being connected to the same central server, a first frame being sent by the electronic device to the central server, the frame comprising an identifier of the electronic device, each gateway receiving said frame and transmitting the received frame, in association with an identifier of the gateway, to the central server, a response delay being predefined for responding to the first frame, the method allowing selection by the central server of a gateway among the plurality of gateways for sending a second frame to the electronic device in response to the first frame.

Abstract: In the context of a dynamic adaptation of a transmission data rate of a terminal device in a wireless communication network, predefined transmission profiles that correspond to respective data rates are associated respectively with reception sensitivities. A server performs an optimization of said transmission data rate in successive stages, and decides to switch to a new stage according to a frame delivery rate with respect to a predefined threshold. The server selects the transmission profile to be applied by the terminal device while keeping at least a predefined margin, dependent on the stage at which the operation is performed, between received signal strength indication and reception sensitivity corresponding to said transmission profile.

Abstract: In a communication system of the LPWAN type including a server and a plurality of gateways intended to make wireless communications with terminals in said communication system, the server: obtains a description of a mobility hierarchy in which mobility types are hierarchically defined; obtains a description of a mobility tree in which mobility areas are hierarchically defined, in conformity with the mobility hierarchy; obtains terrain measurements associated with each mobility area defined in the mobility tree; establishes a frequency plan on the basis of the mobility tree and terrain measurements; and configures the gateways and the terminals according to the frequency plan established.

Abstract: A method for managing the allocation, by a server of a wide area communication network, of a first list of carrier frequencies that can be used by an electronic device for sending messages, the method including determining a second list of carrier frequencies, receiving a first message from the electronic device via a first carrier frequency not included in the second list, determining the value of a quality parameter associated with the first message received, when this value exceeds the value of a first threshold; determining a first sub-list of the second list, including at least one second carrier frequency not included in the first list, determining a second sub-list of the first list, including at least a third frequency not included in the second list, and sending to the electronic device a second message to replace the carrier frequencies of the second sub-list with those of the first sub-list.

Abstract: In the context of a dynamic adaptation of a transmission data rate of a terminal device in a wireless communication network, predefined transmission profiles that correspond to respective data rates are associated respectively with reception sensitivities. A server performs an optimisation of said transmission data rate in successive stages, and decides to switch to a new stage according to a frame delivery rate with respect to a predefined threshold. The server selects the transmission profile to be applied by the terminal device while keeping at least a predefined margin, dependent on the stage at which the operation is performed, between received signal strength indication and reception sensitivity corresponding to said transmission profile.

Abstract: In a communication system of the LPWAN type including a server and a plurality of gateways intended to make wireless communications with terminals in said communication system, the server: obtains a description of a mobility hierarchy in which mobility types are hierarchically defined; obtains a description of a mobility tree in which mobility areas are hierarchically defined, in conformity with the mobility hierarchy; obtains terrain measurements associated with each mobility area defined in the mobility tree; establishes a frequency plan on the basis of the mobility tree and terrain measurements; and configures the gateways and the terminals according to the frequency plan established.