Internet broadcasting system and method thereof

An Internet broadcasting system, comprising:

• a signal converter for receiving an analog broadcasting signal and converting the analog broadcasting signal into a digital broadcasting data;
• an Internet broadcasting unit for sending the digital broadcasting data after storing the digital broadcasting data;
• a repeater for relaying the digital broadcasting data to a switching unit connected with a user terminal according to a broadcasting request message inputted from the user terminal but selectively relaying a channel selected by the user terminal by referring to a first multicasting forwarding table created by using a user datagram protocol (UDP) port number extracted from the broadcasting request message;
• and
• the switching unit for snooping on the broadcasting request message transmitted from the user terminal to the repeater, extracting the UDP port number from the broadcasting request message, storing the extracted UDP port number into a second multicasting forwarding table such that the extracted UDP port number corresponds to information on a location of the user terminal, and transmitting the digital broadcasting data of the selected channel received from the repeater to the corresponding user terminal by referring to an entry of the second multicasting forwarding table.