Date Added: Jun 2012
The Wireless Sensor Networks (WSNs) consists of several sensor nodes which will monitor the environmental conditions such as temperature, pressure, vibration, etc. Basically the sensor nodes sense the information and process the information. Then they transmit the information as data packets to the sink node. When an event occurs in the network, large number of sensor nodes will report their data packets to sink. When large number of sensor nodes are active in transmitting the data packets the load becomes heavy and traffic will also increases. This might leads to congestion in the network.