Wireless sensor network based on multilevel femtocells for home monitoring

An intelligent femtocell-based sensor network is proposed for home monitoring elderly or people with chronic diseases. The femtocell is considered as a small sensor network which is placed into patient house and consists on both mobile and fixed sensors disposed on three layers. The first layer contains body sensors attached to the patient that monitor different health parameters, patient location, position and possible falls. The second layer is dedicated for ambient sensors and routing inside the cell. The third layer contains emergency ambient sensors that cover burglary events or toxic gas concentration, distributed by necessities. Cell implementation is based on IRIS family of motes. In order to reduce energy consumption and radiation level, adaptive rates of acquisition and communication are used. Experimental results on body sensors and ambient ones are presented in the last section.