The active badge location system
ACM Transactions on Information Systems (TOIS)
Some computer science issues in ubiquitous computing
Communications of the ACM - Special issue on computer augmented environments: back to the real world
Composable ad-hoc mobile services for universal interaction
MobiCom '97 Proceedings of the 3rd annual ACM/IEEE international conference on Mobile computing and networking
Project Aura: Toward Distraction-Free Pervasive Computing
IEEE Pervasive Computing
Integrating Internet Telephony Services
IEEE Internet Computing
CT '97 Proceedings of the 2nd International Conference on Cognitive Technology (CT '97)
Stanford interactive workspaces: a framework for physical and graphical user interface prototyping
IEEE Wireless Communications
Location-based communication services
Proceedings of the 2004 ACM SIGMM workshop on Effective telepresence
Ubiquitous device personalization and use: The next generation of IP multimedia communications
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
Enabling SIP-based sessions in ad hoc networks
Wireless Networks
Journal of Network and Systems Management
Multimedia adaptation in ubiquitous environments: benefits of structured multimedia documents
Proceedings of the eighth ACM symposium on Document engineering
A SIP-Based Programming Framework for Advanced Telephony Applications
Principles, Systems and Applications of IP Telecommunications. Services and Security for Next Generation Networks
xtel: a development environment to support rapid prototyping of "ubiquitous content"
Proceedings of the 3rd International Conference on Tangible and Embedded Interaction
Agent-Based Support for Context-Aware Provisioning of IMS-Enabled Ubiquitous Services
SOCASE '09 Proceedings of the AAMAS 2009 International Workshop on Service-Oriented Computing: Agents, Semantics, and Engineering
Streaming multimedia contents to nomadic users in ubiquitous computing environments
INFOCOM'09 Proceedings of the 28th IEEE international conference on Computer Communications Workshops
An integrated mobility framework for ad hoc distributed personal networks
International Journal of Communication Networks and Distributed Systems
GIS web service using context information in mobile environments
ICCSA'06 Proceedings of the 6th international conference on Computational Science and Its Applications - Volume Part I
Building infrastructure support for ubiquitous context-aware systems
ISPA'04 Proceedings of the Second international conference on Parallel and Distributed Processing and Applications
A realization method of voice over IP system passing through firewall and its implementation
ICOIN'06 Proceedings of the 2006 international conference on Information Networking: advances in Data Communications and Wireless Networks
Intelligent secure web service using context information
KES'06 Proceedings of the 10th international conference on Knowledge-Based Intelligent Information and Engineering Systems - Volume Part III
Future Multimedia System: SIP or the Advanced Multimedia System
International Journal of Ambient Computing and Intelligence
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In the past decade, there have been numerous efforts in ubiquitous computing, making computational resources or communication more widely available. We believe that it is time to move to a global-scale ubiquitous computing system that is securable, administered by multiple independent administrators and integrates off-the-shelf hardware and software. We are developing such a system based on the Session Initiation Protocol (SIP), with Bluetooth devices for location sensing and Service Location Protocol (SLP) for service discovery. We also introduce context-aware location information to augment device discovery and user communication. The system builds on our CINEMA infrastructure and can support a range of activities, from home-based settings to collaboration between distant sites.