Satellite IP multicasting system and method

Abstract

The present invention relates to a satellite IP multicasting system and method for constructing an IP multicast network by a unit of internet node having a router for subscriber connection or a switch, and for transmitting a multicasting packet transmitted from a content provider into a local IP multicast network via a satellite. The satellite IP multicasting system features a backbone network, a content provider, a satellite network and a local network. The local network, which is interworked with the backbone network, is configured to multicasting protocol at a router or a switch, performs reverse path forwarding by static multicasting routing setup on a router or a switch connected to the satellite network via Ethernet and on a subscriber router or by IP designation of the same sub-net with source address of IP header of the multicast packet to an output port of a satellite data receiver and a port of a router connected to the satellite data receiver, and transmits the multicast packet into a terminal client.

Description

technical field [0001] The present invention relates to a kind of IP multicasting system, relate to a kind of satellite IP multicasting system more specifically, wherein satellite multicasting network is used for bypassing the backbone network of ISP and the satellite network and the local node of ISP interact directly, relate to For constructing an IP multicast network by a local node unit of an ISP (i.e., by an Internet node unit having a router and a switch for user connection) and for transmitting a multicast packet sent from a content provider to a local via satellite A method for an IP multicast network and relates to a method for interworking a satellite multicast network with a local access network. Background technique [0002] Compared with the multicast protocol, the unicast protocol is less efficient in terms of network traffic and transmission costs, because the same data packet is copied on the source server and sent to each user connected to the source server,...

AI Technical Summary

Problems solved by technology

[0019] Although there are problems such as network traffic in traditional unicast transmission systems and CDN solutions, the limited number of parallel connectors and the cost due to the expansion of leased channel capacity, from the perspective of technology, time and cost, in the whole It is difficult to realize the IP multicast solution on the Internet

[0020] As a result, it is difficult to smoothly provide content services for in-house broadcasting in education or the Internet in which multiple access is performed via conventional Internet networks

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