With the fast improvements of broadband wireless technologies more and more demanding services can be provided over wireless access networks. However, the highly varying nature of wireless channels and the stringent requirements of real-time applications require enhancements of service delivery. To achieve high user-perceived quality adaptive applications and adaptation-supportive network entities play a key role. Recently, cross-layer adaptation is getting acceptance as a method that efficiently increases the performance of wireless communications. Although several cross-layer optimisation methods have been proposed over the past years, the research for end-to-end concepts was rather short-handed. The multimedia pipe (M-Pipe) project was started, among others, to research existing approaches and propose a conceptual solution for cross-layer optimisation of multimedia delivery. In this paper, we overview some of the concepts under investigation in the project
['Attila Takacs', 'Akos Kovacs', 'Franz Kalleitner', 'Hermann Brand']
A general signalling approach for local adaptation