Showing posts from July, 2010

How Sensor network is different from Adhoc Network

Have you wonder why the sensor nodes are differed from their counterpart adhoc nodes. here is the list Sensor nodes are densely deployed Energy is the main criteria for sensor nodes whereas it is secondary criteria for Adhoc nodes. The topology of sensor networks changes frequently all the sensor nodes in any application has a common goal (all the nodes work for a particular application) Sensor nodes are huge in numbers, so they don’t have global identification to locate the nodes. Sensor nodes uses broadcasting whereas adhoc nodes uses point to point communicatio.

Introduction to wireless sensor networks

Sensor networks contain large collection of nodes which are autonomous in nature and has short range communication. Sensor nodes are good for monitoring the animal habitat (movement) in forest, identifying the ripened fruit among given set of fruits, objects in a building, etc. The main challenge behind the deployment of WSN is Energy. Energy is scarce resource, means once the battery is drained, there may be situation where the battery may not be replaced (Eg. dense forests, sea, ocean, etc) So in these cases, energy efficiency should be maintained between the sensor nodes. Also sometimes the nodes will be thrown in to the sea or ocean for identifying fish availability. in those cases, the sensor nodes will not be taken back and hence these nodes are short lived. They give data for sometime and after that they die. Because of these real world applications, the sensor networks are nowadays having good research potential when compared with the adhoc networks. So, what makes sensor