Abstract: A packet transmission method, in which first packets are sent by source stations (5, 6, 7) to target stations (8, 9), the source and target stations being connected via a packet mode data network (1), in which first packets (P1, P2, P3), chosen according to at least the size and the target station of each first packet from a set of first packets sent by source stations, are aggregated to form respective second packets (Pu) of the same protocol level as the first packets; when a second packet satisfies a determined transmission criterion, the second packet is sent to an address determined as a function of the target stations intended to receive first packets aggregated in the said second packet.