Node device having a function of traffic load management for content sharing service in delay tolerant network and method for traffic load management

摘要

Disclosed is an apparatus for managing a traffic load in a content sharing environment where a sending node sends a search message to a receiving node and the receiving node which has received the search message sends a response message to the sending node in a delay tolerant network. In an anti-packet generating part, the receiving node and a first delivery node which has firstly delivered the search message to the receiving node generate and store a first anti-packet for preventing diffusion of the search message, and the sending node and a second delivery node which has firstly delivered the response message to the sending node generate and store a second anti-packet for preventing diffusion of the response message. In an anti-packet delivery part, the receiving node and the first delivery node, if they meet other third delivery node, deliver a first anti-packet and the sending node and the second delivery node, if they meet other fourth delivery node, deliver a second anti-packet. A control part removes a message owned by a fifth delivery node by using the response message without copying the second anti-packet if the fifth delivery node which has received a copied response message to be transmitted from the receiving node to the sending node, is a delivery node having the same with the search message. The present invention applies the IMMUNE_TX and the VACCINE scheme, frequently used for preventing unnecessary message diffusion in delivering a one way message from the sending node to the receiving node, to a content sharing environment and operate the search message and the response message with the anti-packet, thereby reducing the message diffusion.