| 摘要 |
Methods and devices for network transmission in a network sytem, e.g. WLAN are 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.
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