PACKET INFORMATION TRANSFER SYSTEM

PURPOSE:To shorten the in-network passing delay time of information transfer even when the system scale is large and the number of nodes to be relayed is large by deciding the correspondence between a link inputted to each node and a link outputted from a node in advance. CONSTITUTION:Identifiers (a, b, c...) are given to an input link and an output link in nodes A-J and the input link and the output link in pairs having the same identifier are set to be regarded as the trunk line. When the information packet of the fixed length is transferred on the trunk line with a frame subjected to time slot, each frame is constituted of the time division of two elements. That is, an idle/occupancy state signal displaying in a 1st time section 21 whether or not the effective information packet exists in the succeeding time division is transferred. Moreover, a packet is transferred when the signal of the section 21 is in an occupancy state in a 2nd time section 22 and an invalid signal is transferred when the signal is in an idle state, then the in-network passing delay time for transfer is shortened even when the system scale is large and lots of relay nodes are employed.