PEER-TO-PEER GROUP COMMUNICATION IN CONTENT CENTRIC NETWORKING

摘要

A provided is an inter-layer group communication method in a content centric networking environment. The inter-layer group communication in a content centric networking (CCN) environment among the embodiments includes: a step that a CCN router receives an attendance message having a service name which a user node subscribes from the user node; a step that the CCN router transmits the attendance message toward a rendez-vous point which is mapped with the service name and forms a group sharing tree; a step that the CCN router receives a content request message having a content name which the CCN router wants to receive from the user node through the service; and a step that the CCN router transmits the content request message through uplink and downlink interfaces which are connected to the group sharing tree. [Reference numerals] (AA) Start; (BB) End; (S310) User node generating an attendance message including a service name; (S320) Transmitting the attendance message to a CCN router; (S330) Transmitting the attendance message toward a rendez-vous point; (S340) Generating a group sharing tree based on the rendez-vous point; (S350) CNN router receiving the contents request message and adding the corresponding interface to a reception interface list of PIT; (S360) Interface not transmitting the contents request message exists?; (S380) Transmitting through an interface existing on the reception interface list of PIT when receiving the requested contents; (SS370) Transmitting the contents request message and adding the corresponding interface to a transmission interface list of PIT