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This paper proposes a low-cost ubiquitous healthcare framework for home-based health and medical care systems. This framework mainly resolves the problem of bio-data gathering and preprocessing at home through 1) the hierarchical data flow model and 2) the networking and structured models. The framework is compatible for most of communication methods and medical appliances commonly used, and it is able to be extended to vast space and mobile scenes. This framework is economic to use based on current techniques. A reference implementation is also given to validate the framework. [ABSTRACT FROM AUTHOR]