Communication node architecture in a globaly asynchrone network on-chip system

The method involves providing inputs and outputs, associated with input and output controllers, to nodes of an on-chip network. A node is utilized to find a hierarchy of transfer between two data packets to be transmitted towards the same output based on the priority channel information associated with each packet. The information is transmitted using a synchronization signal following an asynchronous communication protocol. An independent claim is also included for a data transmission device including a unit determining a hierarchy of transfer between two data packets.