Context-awareness for heterogeneous access management
The increasing availability of both static and dynamic context information has steadily been driving the development of context-aware communication systems. Adapting system behavior according to current context of the network, the user, and the terminal can yield significant end-to-end performance i...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | deu |
| Published: |
Copernicus Publications
2010-11-01
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| Series: | Advances in Radio Science |
| Online Access: | http://www.adv-radio-sci.net/8/257/2010/ars-8-257-2010.pdf |
| Summary: | The increasing availability of both static and dynamic context information
has steadily been driving the development of context-aware communication
systems. Adapting system behavior according to current context of the
network, the user, and the terminal can yield significant end-to-end
performance improvements. In this paper, we present a concept for how to use
context information, in particular location information and movement
prediction, for Heterogeneous Access Management (HAM). In a first step, we
outline the functional architecture of a distributed and extensible context
management system (CMS) that defines the roles, tasks, and interfaces of all
modules within such a system for large-scale context acquisition and
dissemination. In a second step, we depict how the available context
information can be exploited for optimizing terminal handover decisions to be
made in a multi-RAT (radio access technology) environment. In addition, the
utilized method for predicting terminal location as well as the objective
functions used for evaluating and comparing system performance are described.
Finally, we present preliminary simulation results demonstrating that HAM
systems that include current and future terminal context information in the
handover decision process clearly outperform conventional systems. |
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| ISSN: | 1684-9965 1684-9973 |