METHOD FOR DATA TRANSFER OF PUSH TYPE IN CCN ENVIRONMENT

摘要

PURPOSE: A push-type data transmission method in a content-centric network (CCN) environment is provided to quickly deliver small-sized data in case of push-type data transmission using a negative acknowledgement (NACK) content object. CONSTITUTION: A content providing device (12) inserts content information into an interest packet (301). The content providing device transmits the interest packet, into which the content information is inserted, to a content receiving device (11) (302). The content receiving device receives the interest packet from the content providing device (303). The content receiving device obtains the content information by parsing the received interest packet (304). The content receiving device generates a content object packet not containing contents and transmits to the content providing device (305). The content providing device receives the content object packet not containing contents from the content receiving device (306). The content receiving device requests contents from the content providing device by using the obtained content information (307). The content providing device receives the content request from the content receiving device (308) and transmits corresponding contents (309). The content receiving device receives the contents (310). [Reference numerals] (11) Content receiving device; (12) Content providing device; (301) Insert content information in an interest packet; (302) Transmit the interest packet in which the content information is inserted; (303) Receive the interest packet in which the content information is inserted; (304) Obtain the content information by parsing the received interest packet; (305) Generate and transmit a content object packet in which contents are not included (NACK Content Object Message); (306) Receive the content object packet in which the contents are not included; (307) Request the contents by using the obtained content information; (308) Receive a content request; (309) Transmit corresponding contents; (310) Receive the content