Date Added: May 2012
Wireless Sensor Networks (WSNs) become active suddenly, when an event occurs in order to respond to the event. Depending on the network and the application, there exist different levels of congestion that need to be controlled. This paper presents the design of a new Fuzzy Congestion Controller (FCC) in WSNs. This FCC detects and avoids congestion by developing the ad hoc fuzzy rules base as well as membership functions. In this concept, two parameters have been used as the sign of congestion: channel load and the size of queue within intermediate nodes. These parameters constitute the input to FCC.