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2. Personal and service mobility in ubiquitous computing environments

Author

Zhen E. Zhang, Gregor von Bochmann, N. Hadibi, and Khalil El-Khatib

Subjects
Service (systems architecture), Service quality, Ubiquitous computing, Computer Networks and Communications, Service delivery framework, business.industry, Computer science, Quality of service, Service design, Personal mobility, Mobile computing, Service discovery, Service level requirement, Differentiated service, Personalization, Systems architecture, Data as a service, Electrical and Electronic Engineering, business, Personal area network, Information Systems, Computer network, Service desk
Abstract

Ubiquitous computing environment is defined by the shift of computing technology from the desktop to the background. One of its most notable attributes is its potential to extend the scope of service and personal mobility. This paper describes an agent-based architecture that brings personal and service mobility to the ubiquitous computing environment. A software agent, running on a portable device carried by the user, leverages the existing service discovery protocols to learn about all services available in the vicinity of the user. Short-range wireless technology such as Bluetooth can be used to build a personal area network connecting only devices that are close enough to the user. Acting on behalf of the user and based on a number of aspects, the software agent runs a quality of service (QoS) negotiation and selection algorithm to select the most appropriate available service(s) to be used for a given communication session. The software agent selects as well the configuration parameters for each service. The proposed architecture supports also service hand-off to recompense for service volatility during user movement. Copyright © 2004 John Wiley & Sons, Ltd.

Published
2004

3. Support for Personal and Service Mobility in Ubiquitous Computing Environments

Author

N. Hadibi, Khalil El-Khatib, and Gregor von Bochmann

Subjects
Service quality, Service (systems architecture), User profile, Ubiquitous computing, business.industry, Service delivery framework, Computer science, Service design, Personal mobility, Service discovery, Mobile computing, Service level requirement, Differentiated service, User requirements document, World Wide Web, Data as a service, business, Personal area network, Computer network
Abstract

This paper describes an agent-based architecture that extends personal mobility to ubiquitous environment. A software agent, running on a portable device, leverages the existing service discovery protocols to learn about all services available in the vicinity of the user. Short-range wireless technology such as Bluetooth can be used to build a personal area network connecting only devices that are close enough to the user. Acting on behalf of the user, the software agent runs a QoS negotiation and selection algorithm to select the most appropriate available service(s) to be used for a given communication session, as well as the configuration parameters for each service, based on session requirements, the user preferences and the constraints of the devices that provide the service(s). The proposed architecture supports also service hand-off to take account of service volatility as a result of user mobility.

Published
2003

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