Method and apparatus for reliable multicast streaming
AssigneeThomson Licensing
InventorsRen Lei Chen, Zhi Gang Zhang, Xiao Jun Ma
Life of this patent
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Abstract
A method and apparatus for network transmission in a network system, e.g. WLAN is provided. In the network system, there is a media server for multicasting video stream, a QoS server for obtaining important packets from the media server and reconstructing the obtained important packets into a QoS multicast stream. Then there is an AP for receiving and sending out the multicast video stream to mobile stations directly, and for receiving the QoS multicast stream, re-encapsulating and sending out the stream in multicast-over-unicast way.
Claims11
1-8. (canceled)
Method for transmitting a packet stream containing a first set of packets in a network, wherein, it comprises the steps of:
- receiving said first set of packets in multicast mode in a first stream and a second set of packets in multicast mode in a second stream, wherein, said second set of packets is a subset of the packets of the first set of packets and selected as a function of the importance of said packets for decoding;
- and
- sending said first set of packets to at least one receivers in multicast mode;
- and said second set of packets to one or more receivers among said at least one receivers in unicast mode.
Method for receiving a packet stream containing a first set of packets in a network, wherein, at the side of a receiver, it comprises the steps of
- receiving the first set of packets in multicast mode;
- receiving the second set of packets in unicast mode, wherein the packets of the second set are a subset of the packets of the first set of packets and selected as a function of importance of said packets for decoding;
- and
- using packets from the second set to replace lost or uncorrectable packets from the first set of packets.
Dependencies are inferred from the claim text.