MobiHoc '01 Proceedings of the 2nd ACM international symposium on Mobile ad hoc networking & computing
Web caching and replication
iQueue: A Pervasive Data Composition Framework
MDM '02 Proceedings of the Third International Conference on Mobile Data Management
Architectural Support for Global Smart Spaces
MDM '03 Proceedings of the 4th International Conference on Mobile Data Management
Composing Pervasive Data Using iQL
WMCSA '02 Proceedings of the Fourth IEEE Workshop on Mobile Computing Systems and Applications
Grid Computing: Making the Global Infrastructure a Reality
Grid Computing: Making the Global Infrastructure a Reality
A Survey of Context-Aware Mobile Computing Research
A Survey of Context-Aware Mobile Computing Research
Cache-and-query for wide area sensor databases
Proceedings of the 2003 ACM SIGMOD international conference on Management of data
Providing architectural support for building context-aware applications
Providing architectural support for building context-aware applications
An architecture for privacy-sensitive ubiquitous computing
Proceedings of the 2nd international conference on Mobile systems, applications, and services
Solar: building a context fusion network for pervasive computing
Solar: building a context fusion network for pervasive computing
IrisNet: An Architecture for a Worldwide Sensor Web
IEEE Pervasive Computing
A survey and comparison of peer-to-peer overlay network schemes
IEEE Communications Surveys & Tutorials
Routing techniques in wireless sensor networks: a survey
IEEE Wireless Communications
A natural wayfinding exploiting photos in pedestrian navigation systems
Proceedings of the 8th conference on Human-computer interaction with mobile devices and services
Exploiting real world knowledge in ubiquitous applications
Personal and Ubiquitous Computing
An information service infrastructure for ambient networks
PDCN'07 Proceedings of the 25th conference on Proceedings of the 25th IASTED International Multi-Conference: parallel and distributed computing and networks
Middleware for ubiquitous context-awareness
Proceedings of the 6th international workshop on Middleware for pervasive and ad-hoc computing
Information management architecture for multiaccess networks
GIIS'09 Proceedings of the Second international conference on Global Information Infrastructure Symposium
GlobeCon: a scalable framework for context aware computing
EuroSSC'07 Proceedings of the 2nd European conference on Smart sensing and context
Pervasive open spaces: a transparent and scalable dome-based pervasive resource allocation system
ISPA'06 Proceedings of the 2006 international conference on Frontiers of High Performance Computing and Networking
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Context-aware systems are systems that use context information to adapt their behavior or to customize the content they provide. Prior work in the area of context-aware systems focused on applications where context sources, Context-Aware Services (CASs), and users are in each other's spatial proximity. In such systems no scalability problem exists. However, other relevant CASs are subject to strong scalability problems due to the number of users, the geographical distribution of the context sources, the users, and the CAS as well as the number of organizations that participate in the provision of the context-aware system. In this paper, we classify CASs according to their scalability needs and review context provision and service provision infrastructures with regard to their scalability. For building large-scale context-aware systems it is not sufficient to Zuse large-scale service provision and context provision infrastructures. Additionally an integration layer is needed that makes the heterogeneous access interfaces of the context provision infrastructures transparent for the CASs. We outline our proposal for such an integration layer and describe how it can be combined with an infrastructure that allows handhelds themselves to gather context information in their immediate vicinity via wireless technologies.