Abstract
Abstract Aiming at the character that is the limited mobile terminal resources joining in collaborative design in ubiquitous environment, we propose the model of asymmetrical collaborative awareness, the mechanism and the corresponding method for keeping the logical consistency of shared working space. By the topology mapping of views of shared working space, it makes that the mapping area in asymmetrical mapping is only the current possible considerable content of terminals with limited resources, reduces the demanded resources for collaborative awareness. At the same time the maintenance of data consistency of awareness views is implemented by acquirement mechanism according the demand.
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