Design and Deployment of Link-Layer Boosters for Per-flow Improvement of {QoS} in Wireless Internet Access
Christian Hoene, Iacopo Carreras, Tianwei Chen, Adam Wolisz · 2002
The transport mechanisms of lnternet have an inherent drawback, which is due to their generality. Internet has to support a broad range of services (data, audio, video, etc.) on top of a unique protocol stack. On the other hand, it is well known, that there is a high potential .for QoS and if/ciency improvement if.joint source and channel coding are used. Utilization of this potential is especially attractive in the case of interactive multimedia transmitted over wireless channels. In this paper we present the Mobile Adaptation System (MAS), which supports the dynamic deployment of boosters .for .flow selective link level packet treatment in wireless Internet access. These boosters use the knowledge of the importance of individual packets, or relations among packets in order to optimise the link layer transmission. FEe discuss our approach using as example a speech property based (SPB) booster for improvement of the perceptual quality of Voice over IP transmission in FEireless LANs.