Method, Device and System For Packet Transmission Over IP Networks

摘要

In a method for packet transmission over IP networks redundant IP packet streams are generated by an IP transmitter (32) and transmitted using separate network paths (34) to one or more IP receivers (36). At each IP receiver (36) duplicate IP packets are overwritten to form a single combined packet stream. By using redundant IP packet streams the effects of packet loss and of network congestion can be reduced. A device and system for packet transmission over IP networks is also provided.

主权项

1. A method of packet transmission over IP networks, the method comprising:
receiving from one or more network transmitters a plurality of input IP media broadcast streams, each input stream consisting of a sequence of IP media packets of broadcast data with each IP media packet including header information containing source information identifying the source of the IP media packet and packet ordering data and each input stream representing the same one or more media broadcasts; buffering in a buffer each IP media packet with respect to its source information and its packet ordering data; and outputting from an output interface an output media broadcast stream using the buffered IP media packets, wherein, where a duplicate IP media packet is received which has identical broadcast data to an IP media packet previously buffered, the previously buffered IP media packet is overwritten by the duplicate IP media packet without comparison of the header information of the duplicate IP media packet with the header information of the previously buffered IP media packet, where the source information and packet ordering data of the duplicate IP media packet are identical to those of the previously buffered IP media packet.