Patent ID: 7701876
Filing Date: 2010-04-20
Classification: H04L

Abstract:
1. A message transmission method carried out by a first node in a mixed network comprised of a private network having at least one node and a public network, the message transmission method comprising: checking whether an address of a destination node to receive a message is recorded in a communication node list of the first node, when the address of the destination node is not the address of the first node; transmitting the message to the destination node of which the address is recorded in the communication node list, when it is determined that the address of the destination node is recorded in the communication node list; and transmitting the message and the address of the destination node to one of an upper-level node and lower-level nodes with respect to the first node having an address determined to be closest to the address of the destination node among the addresses recorded in the communication node list, when the address of the destination node is not recorded in the communication node list; wherein the first node has a communication function and a processing function, and wherein a reference address is given to a node in the network serving as a reference node in relation to the first node, and the addresses of nodes other than the reference node are generated based on the position of the other nodes in the network with respect to the reference node.