What is cluster head in wireless sensor networks?
A cluster head is a node that gathers data from the cluster sensors and passes this data to the base stations. Learn more in: Optimizing WSNs for CPS Using Machine Learning Techniques. 3. A node in a cluster that is responsible for collecting data from the sensors in its cluster and relay these data to the Base Station …
Why clustering is important for wireless network?
Clustering is one of the important methods for prolonging the network lifetime in wireless sensor networks (WSNs). It involves grouping of sensor nodes into clusters and electing cluster heads (CHs) for all the clusters.
What cluster heads do?
The cluster-head assigns a timetable to the sensor nodes of its cluster based on the TDMA approach. At the indicated time the nodes can send data to the cluster-head. The steady phase consists of the following steps: Sensor nodes start sensing and transmitting data to cluster-heads.
What is the benefit of clustering?
Clustering Intelligence Servers provides the following benefits: Increased resource availability: If one Intelligence Server in a cluster fails, the other Intelligence Servers in the cluster can pick up the workload. This prevents the loss of valuable time and information if a server fails.
How clusters are formed in WSN?
Nodes are organized into clusters, each of which has a cluster head; the rest of the nodes become cluster members. We focus on the behavior of a given cluster. To form the clusters, all nodes transmit a packet directly to the sink node and continue to transmit that packet until it is successfully received.
What are the advantages of a clustered architecture over a layered architecture in a sensor network?
In clustered structure, CH performs more responsibilities than other cluster members. Clustering owes more benefits that include load balancing, less energy consumption, reusability of resources and improved network life time.
What is the need for clustering nodes in a sensor networks?
Clustering in wireless sensor networks. Sensor nodes in an environment collect data and transmit it to a sink either directly or collaboratively through other nodes. Many sensor applications cluster the sensor nodes to achieve scalability, robustness and reduced network traffic.
What is cluster in wireless communication?
A cluster is a group of cells in which all available frequencies have been used once and only once. Since the same frequencies can be used in neighboring clusters, interference may become a problem. Therefore, the frequency re-use distance must be kept as large as possible.
What is cluster head node?
In simple terms a head node, sometimes identified as a login node, is a configured system that sits in a Rack as part of a cluster and act as a Master node for the whole cluster in which case it becomes the single point for managing all the computational resources.
What is cluster head selection?
Cluster head is a node, which collects data from the cluster sensors and passes it to the base station. Thus, it should be energy efficient. Many methods are in practice for cluster head selection however they limits due to various reasons like. Selecting an appropriate cluster head.