Abstract: A system, a device, and a method for transmitting a signal (11) comprising a preamble and a data frame (13) by preamble sampling in a communications network including a plurality of nodes (1a, 1b), said preamble including a numbered sequence of microframes (19).

Abstract: A method of communication, on a radio channel, between at least two nodes is disclosed. This method is adapted for emitting on the channel in an alternating manner, comprising formulating, by one of the two nodes, termed the emitter, a signal comprising a preamble comprising a series of frames, followed by the data frame, at least one first frame of the preamble comprising a copy of the data frame and indicating a number of frames of the preamble separating this first frame from the data frame and emitting, by the emitter node, of the signal thus formulated on the radio channel.

Abstract: Method of communication, on a radio channel in a network comprising a plurality of telecommunications nodes with which are associated respective values of a metric, including emitting, from a first node, a request on the radio channel, and subsequent to the receipt of the request by at least one second node, emitting a response message with a delay determined as a function of the metric value associated with said second node.

Abstract: A routing method, apparatus, and computer readable medium storing instructions to perform the method in a network having a set of communication nodes, to establish a route from at least one source node to a destination node, which includes broadcasting a request from the destination node, examining, in response to reception of the request at an intermediate node, whether the intermediate node previously received the request, and if the request was not previously received by the intermediate node, systematically rebroadcasting the request from the intermediate node with a delay that is a function of a routing metric associated with the intermediate node, and repeating the examining and rebroadcasting until the at least one source node is reached.

Abstract: Method of communication, on a radio channel, between at least two nodes (2) adapted for emitting on the said channel in an alternating manner, comprising the following steps, with a view to transmitting a data frame: formulation, by one of the two nodes, termed the emitter, of a signal (S) comprising a preamble comprising a series of frames, followed by the data frame, at least one first frame of the preamble comprising a copy of the data frame and indicating a number of frames of the preamble separating this first frame from the data frame; emission, by the emitter node, of the signal thus formulated on the radio channel.

Abstract: Method of communication, on a radio channel (4) in a network (1) comprising a plurality of telecommunications nodes (2) with which are associated respective values of a metric, comprising the following steps: /a/ emitting, from a first node, a request on the radio channel; /b/ subsequent to the receipt of the request by at least one second node (A), emitting a response message with a delay determined as a function of the metric value associated with said second node.

Abstract: A system, a device, and a method for transmitting a signal (11) comprising a preamble and a data frame (13) by preamble sampling in a communications network including a plurality of nodes (1a, 1b), said preamble including a numbered sequence of microframes (19).

Abstract: A transceiver station (10) forming a node of a telecommunications network, e.g. an ad hoc sensor network, comprises means (11) for receiving a request originating from another node of the network, means (19) for determining a delay as a function of a routing metric associated with the station, and means (16, 18) for rebroadcasting the request on the network with the determined delay on condition that the same request has not already been received beforehand.