PROTON: A Policy-based Solution for Future 4G devices
POLICY '04 Proceedings of the Fifth IEEE International Workshop on Policies for Distributed Systems and Networks
Proceedings of the 3rd international conference on Mobile and ubiquitous multimedia
Towards qos-awareness of context-aware mobile applications and services
OTM'05 Proceedings of the 2005 OTM Confederated international conference on On the Move to Meaningful Internet Systems
Vertical handover supporting pervasive computing in future wireless networks
Computer Communications
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In a dynamic, heterogeneous environment, context-aware adaptation is a key concept to meet the varying requirements of different users. Connectivity is an important context source that can be utilized for optimal management of diverse networking resources. Application Quality of Service (QoS) is another important issue. This paper presents connectivity from the point of view of context awareness, identifies various relevant raw connectivity contexts, and discusses how high-level context information can be abstracted from the raw context information. Further, rich context information is utilized in various policy representation with respect to user profile and preference, application characteristics, device capability, and network QoS conditions. Finally, a context-aware end-to-end evaluation algorithm is presented that takes into account the application QoS .in a multi-access wireless network. Simulation results show its efficiency and effectiveness.