Vertical handoffs in wireless overlay networks
Mobile Networks and Applications - Special issue: mobile networking in the Internet
A Middleware Infrastructure for Active Spaces
IEEE Pervasive Computing
Aura: an Architectural Framework for User Mobility in Ubiquitous Computing Environments
WICSA 3 Proceedings of the IFIP 17th World Computer Congress - TC2 Stream / 3rd IEEE/IFIP Conference on Software Architecture: System Design, Development and Maintenance
ICESS '05 Proceedings of the Second International Conference on Embedded Software and Systems
ISWPC'09 Proceedings of the 4th international conference on Wireless pervasive computing
Towards location based QoS-aware network selection mechanism for the nomadic mobile services
CCNC'09 Proceedings of the 6th IEEE Conference on Consumer Communications and Networking Conference
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Specifically ubiquitous computing paradigm is based on seamless connectivity. And also to guarantee the seamless connectivity, an intelligent network management between heterogeneous network interfaces, called vertical handoff (VHO), should be designed. Besides, conventional VHO schemes are based on network information only, and do not provide any service manage-ment scheme for seamless service. For this reason, this paper proposes a middleware architecture supporting efficient seamless connectivity with service management. In this architecture, we define modules to perform VHOs in accordance with contexts of services, user intention as well as network information. And also we define profiles used to express the contexts related to the process of VHOs and service management. With the proposed scheme, we can reduce the number of unnecessary VHOs and application failures significantly. This leads to around 130% of enhancement in data throughput, and also 85% of application failures can be reduced.