Yousif Al Ridhawi

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The inefficiency of one-to-one matching of user requirements to a single service has given rise to service composition. Service composition allows simple services to be dynamically combined into more complex services. In mobile environments, service discovery and integration involves cooperation between various service nodes where reliance on a centralized(More)
The emergence of ubiquitous computing, enabled by the availability of portable devices and advances in (wireless) networking technologies , has increased the need for personalized and adaptive services in mobile environments. Making use of context is essential to cope and timely react to changes in such environments and hence achieve adaptability,(More)
This paper presents a dynamic hybrid Service Overlay Network (SON) for service composition for multimedia delivery in mobile networks. The overlay considers the nomadic nature of mobile nodes in the decision for node placement within the overlay as well as the types of services provided and expected Quality of Service (QoS) levels. Dynamic re-organization(More)
This paper presents a policy-based context-level negotiation protocol and context-aware system architecture to personalize consumer-received context information through negotiations. Location tracking and prediction empower the system to shape contextual information delivered to users according to their expected needs.
Context based dynamic adaptation of autonomous services and applications require the acquisition of an array of contextual information. Context dissemination mechanisms may result in network flooding, unrestricted access to private context information, and the inability of consumers to limit or personalize received context. Adapting context information(More)
This paper proposes a new vertical handover (VHO)-enhanced mobile service discovery and composition method over a hybrid service overlay network (H-SON). The overlay considers the dynamic characteristics of mobile nodes in the decision for node placement as well as the types of services provided and Quality of Service (QoS) levels. The mobile nature of(More)