Patent ID: 8218455
Filing Date: 2012-07-10
Classification: H04L

Abstract:
1. An information communication system comprising an overlay network formed by participation of a plurality of node devices, mutually connected through a communication route, at least one of the plurality of node devices comprising: a memory unit for memorizing node information indicative of a first node device to be a candidate of an information transfer destination; a participation request information transfer unit for judging whether or not the information transfer destination is memorized in the memory unit, based on the node information indicative of a participation request node device, in response to receiving participation request information which indicates a participation request into the overlay network and includes the node information of the participation request node device requesting participation, and transferring the participation request information to the information transfer destination in response to judging that the information transfer destination is memorized in the memory unit; an existence confirmation information sending unit for judging whether or not node information indicative of a second node device, the second node device being a node device other than the information transfer destination, is memorized in the memory unit, in response to receiving the participation request information, and sending the existence confirmation information including the node information of the participation request node device to the second node device in response to judging that the node information indicative of the second node device is memorized; and a return information sending unit for sending return information to the participation request node device in response to receiving the existence confirmation information.