| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To apply QoS differentiation to a media stream transmitted from a transmitting station (STA) to a receiving STA in a WLAN system. <P>SOLUTION: The transmitting STA generates a base sub-stream and one or a plurality of enhancement sub-streams for subsequent transmission via a wireless communication channel and moreover assigns different priorities to different sub-streams. Depending on channel conditions, the transmitting STA may select and discard, without transmission, portions of data from enhancement sub-streams. This selection process is based on the assigned priority and operates to preserve as much as relatively high-priority data as possible. The receiving STA then processes the received data to generate a reconstructed media stream. This stream provides signal quality equal to or higher than the signal quality supported by the base sub-stream. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
