Patent ID: 8451762
Filing Date: 2013-05-28
Classification: H04L

Abstract:
1. A method for reliable delivery of multicast data by a media gateway employing application layer multicast to unicast conversion, said method comprising: establishing a session with a receiver; mapping a multicast connection to a unicast resource identifier; transmitting to the receiver, information regarding available programs from a server, said available programs comprising a plurality of multicast addressed data packets, wherein said information has been modified by removing multicast connection information from at least one of said available programs; receiving a request from said receiver to receive one of said available programs, said request including a receiver port address; joining, by said media gateway, a multicast group in order to request said one of said available programs from said server as a proxy for said receiver, said receiver having no knowledge of multicast; allocating server ports; receiving multicast addressed data packets from an external network; converting said multicast addressed data packets to unicast addressed data packets, said conversion being performed above a transport layer of a communications protocol; and transmitting said converted data packets to said receiver port address.