Method of intermediating multicasting signal for multicasting embodiment

A multicasting relay method under a digital subscriber line (xDSL) environment, the method comprising the steps of:

• prompting a contents providing server to track a first xDSL connector internet address and discriminate the existence of a multicast box (server) moving along with a xDSL server (B-RAS) to which the first xDSL connector belongs when a digital subscriber line (xDSL) connector is connected with the contents providing server to select a desired contents (step 1);
• prompting the contents providing server to transmit multicasting data to a relevant multicast box (server) in real time (step 2);
• prompting the multicast box (server) to make a multicasting data transmission command to the first xDSL connector terminal (step 3);
• prompting the first xDSL connector terminal to make a multicasting attempt to a xDSL service device of the xDSL server according to the multicasting data transmission command (step 4);
• prompting the multicast box (server) to broadcast multicasting data through the xDSL service device to the first xDSL connector terminal in real time when the xDSL service device supports multicasting data as a result of success at step 4 (step 5);
• and
• prompting the contents providing server to induce the second xDSL connector terminal to a multicast box (server) moving along with an xDSL server (B-RAS) to which the second xDSL connector terminal belongs, when the second xDSL connector gets an access after completion of step 5 and to relay multicasting data to the second xDSL connector terminal through xDSL service device of a relevant xDSL server (step 6).

A multicasting relaying method under a modem environment, the method comprising the steps of:

• prompting a contents providing server to induce a modem connector terminal to a server (NAS) to which the modem connector terminal belongs when a modem connector is accessed (step 1);
• prompting the contents providing server to broadcast multicasting broadcasting data to the server (step 2);
• and
• prompting the server to broadcast multicasting broadcasting data to the modem connector terminal one-on-one in real time (step 3).

A recording medium readable by a computer recorded with programs for realizing a set of functions for:

• prompting a contents providing server to induce a first xDSL connector terminal to a xDSL server (B-RAS) to which the first xDSL connector terminal belongs if a first digital subscriber line (xDSL) connector gets an access to the contents providing server to select a desired contents (first function);
• prompting the contents providing server to broadcast a multicasting data to the xDSL server in real time (second function);
• discriminating whether xDSL service device belonging to the xDSL server supports the multicasting data (third function);
• prompting the xDSL service device to broadcast the multicasting data to the first xDSL connector terminal in real time and the xDSL service device to receive the broadcasting data from the first xDSL connector terminal at a multicasting address if the xDSL service device supports the multicasting data according to the discrimination result of the third function (fourth function);
• and
• prompting the contents providing server to induce the second xDSL connector terminal to a xDSL server (B-RAS) to which the second xDSL connector terminal belongs, when the second xDSL connector gets an access, after completion of the fourth function, and relay the multicasting data from xDSL service device belonging to a relevant xDSL server to the second xDSL connector terminal (fifth function).

A recording medium readable by a computer recorded with programs for realizing a set of functions for:

• prompting a contents providing server to track an internet address of the first xDSL connector and confirm the existence of a multicast box (server) subsequently moving along with xDSL server (B-RAS) to which the first xDSL connector belongs when a digital subscriber line connector gets an access to a contents providing server to select desired contents (first function);
• prompting the contents providing server to transmit a multicasting data to a relevant multicast box (server) in real time (second function);
• prompting the multicast box (server) to make a multicasting data transmission command to the first xDSL connector terminal (third function);
• prompting the first xDSL connector terminal to make a multicasting attempt to xDSL service device belonging to the xDSL server according to the multicasting data transmission command (fourth function);
• prompting the multicast box (server) to broadcast the multicasting data through the xDSL service device to the first xDSL connector terminal in real time when the xDSL service device supports multicasting data as a result of the successful attempt of function 4 (fifth function);
• and
• prompting the contents providing server to induce the second xDSL connector terminal to the multicast box (server moving along with a xDSL server (B-RAS) to which the second xDSL connector terminal belongs when the second xDSL connector gets an access after completion of the fifth function, and the multicast box (server) to relay the multicasting data through xDSL service device of a relevant xDSL server to the second xDSL connector terminal (sixth function).

A recording medium readable by a computer recorded with programs for realizing a set of functions for:

• prompting a contents providing server to induce the modem connector terminal to a server (NAS) to which the modem connector terminal belongs (first function);
• prompting the contents providing server to broadcast a multicasting data to the server (NAS) in real time (second function);
• and
• prompting the server (NAS) to broadcast the multicasting data to the modem connector terminal one-on-one in real time (third function).