Date Added: Aug 2012
Wireless Sensor network is the network of sensors. The sensors are the nothing but the small devices which have the sensing ability, storage capacity and also the energy or the power storage. The function of the sensors is to sense the environmental conditions like temperature, humidity and send this information to a device or node called sink node or base station. There are number of sensors in the network. All the sensors sense and transmit the data to a single sink node at the same time, which can cause the congestion.