Wei Wang, Soung Chang Liew, and Victor O. K. Li
This paper already highlight the main impairments in VoWLAN: Protocol overhead and uplink/downlink unfairness.
Their solution (M-M) consists on multiplexing-multicasting the packets for download. These multicasted packets require strict prioritization to avoid collision.
The main drawback I can see is how could be this combined with level-2 security (WPA) so widespread this days.
The authors also analyze the impact their solution has on delay and the impact of elastic flows on the number of VoIP Streams.
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