Sensor networks communication architecture

The sensor nodes are usually scattered in a sensor field as shown in Fig. 2.



Each of these scattered sensor nodes has the capabilities to collect data and route data back to the sink and the end users. Data are routed back to the end user by a
multihop infrastructureless architecture through the sink as shown in Fig. 2. The sink may communicate with the task manager node via Internet or Satellite.
The protocol stack used by the sink and all sensor nodes is given in Fig. 3.