SFB 627: Nexus
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SFB 627: Nexus
Project A1:

Context-Aware Communication Control

Deutsche Version
Prof. Dr.-Ing. Dr. h.c. mult. Paul J. Kühn

University of Stuttgart
Institute of Communication Networks and Computer Engineering
Pfaffenwaldring 47
D 70569 Stuttgart

Tel. +49 (0)711 685-8027
Fax +49 (0)711 685-7983


Complex context-aware applications impose stringent requirements on the communication infrastructure with respect to bandwidth and Quality of Service. There is a latent time- and location-variant discrepancy between these requirements and the capabilities of heterogeneous mobile communication networks. Applications such as the visualization of spatial-world model information on mobile handsets must be adaptive in order to compensate for these differences. Consequently, a comprehensive control of adaptation mechanisms spanning different protocol layers and application instances is required. Therefore, one focus of this sub-project is to develop supporting methods for adaptive Nexus applications. This includes approaches for network-based mediation of spatial-world model data and approaches for adaptive communication patterns. The evaluation of the interaction with Nexus applications is realized in collaboration with other sub-projects working on Nexus applications.

The second focus of the sub-project is a cross-layer and cross-application adaptation control and orchestration. Adaptation decisions can be significantly improved using high-quality context information that is available in world models. In addition to cell coverage areas stored in the Nexus world model, context information related to individual users is of particular interest, since this allows to predict future network connectivity and user needs. An example for such context information is the location of users in combination with movement prediction, which is obtained from navigation components in the Nexus world model. Moreover, past usage scenarios, information about current activities and (price) preferences can be considered, too. To process such context information, the sub-project applies methods developed by other projects within the center of excellence (diffuse information, detection of situations, etc.).


- Institute of Communication Networks and Computer Engineering    


- Project Head    
 - Prof. Dr.-Ing. Dr. h.c. mult. Paul J. Kühn   
- Scientific Staff Members    
 - Michael Scharf   
 - Christian Müller