Context awareness is an important issue in ambient
intelligence to anticipate the desire of the user and,
in consequence, to adapt the system. In context awareness,
localization is very important to enable a responsive environment
for the users.
Focusing on this issue, this paper presents a localization
system based on the use of Wireless Sensor Networks
devices. In contrast to a traditional RFID, these devices offer
the possibility of a collaborative sensing and processing of
environmental information.
The proposed system is a range-free localization algorithm
that uses fuzzy inference to process the RSSI measurement
and to estimate the position of mobile devices. The main
goal of the algorithm is to reduce the power consumption
and the cost of the devices, especially for the mobiles ones,
maintaining the accuracy of the inferred position
