Mobile multicast system for supporting network-based mobility and method thereof

A method for providing multicast data to a mobile node from a manager connected to a mobility control server through an IP core network, comprising:

• receiving a general query message for detecting a mobile node that wants to receive multicast data from the mobility control server and transferring the received general query message to mobile nodes through an access point;
• receiving a membership report message from at least one mobile node that wants to receive the multicast data among mobile nodes connected to the access point and transferring the received membership report message to the mobility control server;
• setting up an interface of a packet received the at least one mobile node to a multicast router at a binding table when a tunnel between the at least one mobile node to the multicast router is formed in response to the membership report message from the mobility control server;
• and
• transferring a multicast packet received at the at least one mobile node through the interface when the at least one mobile node receives the multicast packet from the multicast router through the tunnel.

A method for providing multicast data to a mobile node from a router connected to a mobility control server through an IP core network, comprising:

• transmitting a general query message for detecting a mobile node that wants to receive the multicast data from the mobility control server at a predetermined time interval;
• forming a tunnel between a mobile node that wants to receive the multicast data and a manager that communicates with the mobile node when a membership report message of the mobile node and information about the manager is received from the mobility control server;
• and
• transmitting the multicast data to the mobile node through the tunnel.

A mobile multicast system supporting network based mobility, comprising:

• access points configured to communicate with mobile nodes having no mobility supporting function in an access network through a wireless channel and to obtain and provide a 2 layer (L2) address of a mobile node;
• managers configured to control a handover process of each mobile node included in the access points, to transmit a multicast packet to the mobile node, and to be provided corresponding to each one of the access points;
• a router configured to receive multicast data through a network and to transmit the multicast packet to a mobile node that wants to receive the multicast data;
• and
• a mobility control server configured to obtain location information of a mobile node from the managers, to determine whether a mobile node is registered for a multicast service or not by transmitting a query message for determining whether multicast data is received or not to the managers when the query message is received from the router, to form a tunnel between the router and a manager that transmits a membership report message when the membership report message for registering the multicast service is received.