Electronics and Telecommunications Research Institute

Seung-hun Oh

Jai-sang Koh

Byung-Tak Lee

Il-kyun Park

Sim-kwon Yoon

Nac-woo Kim

Byong-kwon Moon

Kyung-hun Kim

Seok-kap Ko

A fragmentation repetition detection apparatus () for detecting an IP fragmentation repetition which may occur in a multicast or unicast environment is provided. The fragmentation repetition detection apparatus () includes a packet capturing unit () which captures a received packet, a fragmentation repetition detector which detects whether or not the captured packet is a packet which is repetitively fragmented, and a path maximum transmission unit (PMTU) transmitter () which transmits PMTU information acquired by the fragmentation repetition detector () to a server which transmits the packet when the captured packet is a packet which is repetitively fragmented. Since a packet is transmitted by readjusting a PMTU, a fragmentation of an IP packet can be prevented.

System for controlling path maximum transmission unit by detecting repetitional IP packet fragmentation and method thereof

Disclosed is a system of transporting multimedia based on network, and more particularly, to an apparatus for inserting, transporting and extracting a timestamp through a network protocol. A network timestamp is transported without changing a preset transport standard such as a UDP, an RTP and a MPEG-2 standard by adding a packet having a timestamp, which is used to compensate for network jitter and used for synchronization, to a packet stream transported through a UDP or an RTP.

Apparatus and method for inserting or extracting network timestamp

Growing community of inventors

Gwangju-si, South Korea

Seung-hun Oh