Automatic and effective service provision with context-aware service composition mechanism in cyber-physical systems

作者：Wang Tao^*; Cheng Lianglun; Zhang Ke

来源：Advances in Information Sciences and Service Sciences, 2012, 4(11): 151-160.

DOI：10.4156/AISS.vol4.issue11.18

• Context aware services
• Context-Aware
• Cyber physical systems (CPSs)
• Hierarchical architectures
• In-depth study
• Logic models
• Ontology model
• Physical resources
• Physical world
• Real time constraints
• Service aggregation
• Service compositions
• Service Oriented
• Service provider
• Service provisions
• Service selection
• Service-ability
• Specific tasks

Cyber-Physical Systems (CPSs) seamlessly integrate lots of heterogeneous cyber and physical entities to realize precise controlling of the physical world. Traditional service-oriented models are insufficient to effectively compose the atomic services provided by cyber and physical entities to implement a specific task. In this paper, we presented an efficient context-aware service composition framework for automatic and effective service provision in CPSs. We firstly proposed an ontology model for context-aware specification of the service abilities of physical entities, as well as a hierarchical architecture for atomic service aggregation and management. And then, the workflow logic model was given for functionality decomposition of a task. Furthermore, an automatic two-phase context-aware service selection optimization mechanism is proposed, and it is used to select out the optimal service providers to implement the task effectively and dependably. Our proposed service composition framework is helpful to automate the composition process under real-time constraints and under various physical resource constraints. This preliminary solution for service composition in CPS is important and helpful for in-depth study and practical applications of CPSs.

• 出版日期2012