What is data aggregation strategy in wireless sensor network?
As a traditional approach in WSN, nodes send data individually when the base station demands for network. But in Data aggregation approach, the aggregator, a special node is used to collect data from its neighboring stations, add them and forward that combined data to base station i.e sink node in multi-hop manner.
What is meant by scalability in wireless sensor network?
Scalability is defined as ability to handle growing number of users in a network . A routing protocol is considered scalable with respect to network size. In a wireless sensor network the routing protocol which is very efficient in performance is the hierarchi- cal routing Protocol.
Which architecture is used in wireless sensor networks?
There are 2 types of architecture used in WSN: Layered Network Architecture, and Clustered Architecture.
What are different optimization goals for wireless sensor network?
We also summarize different objectives used to formulate the multi-objective optimization problem, i.e., maximization of coverage, minimization of packet error rate, maximization of network life, maximization of energy efficiency, minimization of cost, minimization of delay and maximization of throughput.
What is data aggregation in sensor networks?
Data aggregation is a widely used technique in wireless sensor networks. The security issues, data confidentiality and integrity, in data aggregation become vital when the sensor network is deployed in a hostile environment. Data aggregation is a process of aggregating the sensor data using aggregation approaches.
What is the significance of scalability in sensor network design?
Scalability is an important factor in designing an efficient routing protocol for wireless sensor networks (WSNs). A good routing protocol has to be scalable and adaptive to the changes in the network topology. Thus scalable protocol should perform well as the network grows larger or as the workload increases.
What are wireless sensor networks and how they are different from traditional networks?
In a wireless sensor network, sensor nodes are densely deployed. Sensor nodes are prone to failure. The topology of a wireless sensor network changes very frequently. Sensor nodes mainly use broadcast communication paradigms whereas most traditional ad hoc networks are based on point-to-point communications.
What are the characteristics of wireless sensor networks?
Characteristics of Wireless Sensor Network
- The consumption of Power limits for nodes with batteries.
- Capacity to handle node failures.
- Some mobility of nodes and Heterogeneity of nodes.
- Scalability to a large scale of distribution.
- Capability to ensure strict environmental conditions.
- Simple to use.
- Cross-layer design.
How do you optimize a wireless sensor network?
To optimizing wireless sensor networks for secured data transmission both at cluster head and base station data aggregation is needed. Data aggregation is performed in every router while forwarding data. The life time of sensor network reduces because of employing energy inefficient nodes for data aggregation.