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| description |
Many scenarios of beyond 3G mobile communications describe the
integration of various access technologies into one system. Being
always best connected under certain optimization criteria will be a
crucial point for network operators and mobile users and requires
network changes of mobile devices at runtime, the so-called vertical
handovers. For those, bandwidth fluctuations up to the order of one
or two magnitudes, e.\,g., when changing from an IEEE~802.11 to a
GPRS System, have to be expected and applications have to cope with
them in an user friendly way. Multi-modality and flexible data
representations exploiting weights and semantic of transmitted data
as means for making applications resource adaptive are currently
under investigation. On top of that, device and system-wide
adaptation control instances are needed to solve cross-layer and
inter-application issues. This requires a rethinking of the
classical communication paradigm of OSI-like protocol layering. With
this paper, an overview on adaptation in communications is presented
and an experimental framework providing system support for
application adaptation and adaptation control is introduced as part
of that discussion.
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| publisher |
University of Stuttgart : Collaborative Research Center SFB 627
(Nexus: World Models for Mobile Context-Based
Systems)
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| Madrid: none
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| type |
Text
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| Article in Proceedings
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| source |
In: Colmenarejo (ed.): Proceedings of the 11th Open European Summer
School and IFIP WG 6.6, WG 6.4, WG 6.9 Workshop (EUNICE 2005), pp.
1-8
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| contributor |
Institut für Kommunikationsnetze und Rechnersysteme
(IKR)
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| subject |
Network Architecture and Design (CR C.2.1)
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| Mobile communications
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| adaptive communications
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| system architecture
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| middleware
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| message based communications
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