For providing real-time data collecting in a telehealthcare system composed of wireless sensor network and home automation network, a middle- ware called CodaQ is designed. It provides context data and takes into account QoS requirements of the applications. In this paper, we show how the data are modeled for including context information and how the QoS requirements are handled within a middleware. First measurements on a test bed have been car- ried out showing the good performance of our design.