Stationary WSN Vs Mobile WSN | Difference between Stationary WSN and Mobile WSN
This page compares Stationary WSN vs Mobile WSN and mentions difference between Stationary WSN and Mobile WSN (Wireless Sensor Network).
What is WSN ?
The WSN (Wireless Sensor Network) consists of end sensor nodes, routing nodes and base station or data collector sink node (or base station or gateway). The WSN should be scalable and secure to deliver efficient and reliable network.
The WSN can be classified based on network type, clustering, communication method, protocol, application usage and coverage. There are mainly two categories of WSN viz. stationary WSN and mobile WSN. Refer article on WSN >>.
The wireless sensor network (WSN) in which sensor nodes are static is called as stationary WSN. This is shown in the figure-2 above.
Advantages : The stationary WSNs are easy to deploy and easier to maintain. The sensor nodes can be installed at
optimized place and hence more number of nodes can be placed in lesser space.
Disadvantages : The topology of this WSN type can be changed automatically. If any node fails, it results into network partition.
The WSN in which nodes are mobile is known as mobile WSN. It is also called as MANET (Mobile Ad hoc network). It is infrastructure less network of mobile devices or nodes which has following properties i.e. self-configure, self-heal, self-optimize and self-protect.
The mobile sensor nodes senses physical parameters and when they reach near to sink, it delivers the data collected. There are situations where sink itself is mobile in nature and collects the data from stationary sensor nodes.
The figure depicts mobile WSN architecture in which sensor nodes and sink are immobile. Hence mobile data collectors are used which collects the data from sensor nodes and delivers to the data sink. These mobile data collectors are called data mules and the process of data collection/delivery is referred as data muling technique.
The mobile WSN is used in following domains.
Underwater Mobile WSN: In this type of MWSN, sensor nodes sense various parameters under the sea or water levels.
Terrestrial Mobile WSN: In this type of MWSN, sensor nodes are deployed over the land surface for various applications which include wildlife monitoring, surveillance, object tracking etc.
Aerial Mobile WSN: In this type of mobile WSN, nodes fly on air and sense data.
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