Patent ID: 8817794

Claim:
A network system comprising: a first communication node, a second communication node, and a third communication node, located in a network; wherein the first communication node comprises: a first receiving unit that receives a first packet from outside of the network; a first sequence information adding unit that adds first internal sequence information to the first packet, wherein the first internal sequence information is in time synchronization with other communication nodes; and a first sending unit that sends the first packet with the added first internal sequence information to the third communication node; wherein the second communication node comprises: a second receiving unit that receives a second packet from outside of the network; a second sequence information adding unit that adds second internal sequence information to the second packet, wherein the second internal sequence information is in time synchronization with other communication nodes; and a second sending unit that sends the second packet with the added second internal sequence information to the third communication node; wherein the third communication node comprises: a third receiving unit that receives the first packet with the added first internal sequence information from the first communication node via the network and the second packet with the second internal sequence information from the second communication node via the network; and a third sending unit that sends the first packet and the second packet based on an order of the first internal sequence information and the second internal sequence information to outside of the network; and wherein the first communication node further comprises a delay insertion unit that causes the first packet to be delayed by a predetermined time according to an address of the first packet before sending the first packet to the third communication node.