Patent attributes
A communication system includes a server with at least one end device and one gathering gateway that transmit to the server uplink frames having moments of transmission according to which are defined reception windows intended for downlink frames supposed to be constructed by the server and relayed by one said gathering gateway selected by the server. A disengageable delegation mechanism vis-à-vis at least one elected end device is implemented in collaboration with the server by an elected gathering gateway by: allocating a buffer to each elected end device and storing therein useful data received asynchronously from the server for the attention of said elected end device; and by constructing and transmitting, on behalf of the server, downlink frames in response to the uplink frames received from each elected end device.