Patent ID: 7606227
Filing Date: 2009-10-20
Classification: H04L,H04W

Abstract:
1. A method for distributing data multicast from a source and addressed to a receiving terminal which does not support a multicast function via a gateway, the multicast distribution method comprising the steps of: detecting a data request packet, sent from the receiving terminal registered in a first network to the source, at a first gateway located on a transfer path of a packet between the receiving terminal and the source; retaining an address of the receiving terminal included in the data request packet; detecting a registration message which the receiving terminal issues to a second network; sending a receive state information packet including information relating address information of the source and destination address information of data multicast to a second gateway located on a transfer path of a packet between the second network and the source; sending from the second gateway a distribution request packet of multicast data, based on a received receive state information packet, to the source; and converting address information of a multicast data packet sent from the source to an address of the receiving terminal and sending the multicast data packet to the receiving terminal.