Is a hierarchical routing
protocol that combines sensors into clusters, each controlled by CH.
A hierarchical routing
protocol gives the preference to a node with highest energy to be called as CH.
The way to organize WSNs can be divided into three categories: (a) the cluster routing methods; (b) the hierarchical routing
method; and (c) the itinerary routing method [14,15].
The topics include interval-valued hesitant fuzzy geometric Bonferroni mean aggregation operator, deep learning with large scale dataset for credit card data analysis, improving the histogram for infrequent color-based illustration image classification, an improved intelligent student advising system, and a quality-of-service-aware hierarchical routing
protocol based on signal-to-interference plus noise ratio and link duration for mobile ad hoc networks.
As shown in the previous discussion, there are no works focusing on reviewing the hierarchical routing
protocols that support the mobility of sensor nodes and/or sink node.
According to many researchers such as    the best type of routing data in WSNs are the hierarchical routing
 I., O., Eleburuike, S., S., Adekunle, "An energy efficient protocol based on hierarchical routing
technique for WSN", Master Thesis Blekinge Institute of Technology, 2010.
ZHLS (Zone-Based Hierarchical Link-State Routing) [1, 12] protocol incorporates location information into a novel peer-to-peer hierarchical routing
Since the main objective of this paper is to find the impact of network structure based hierarchical routing
protocols on various parameters of sensor networks, we described here a brief introduction about different categories of routing protocols used in WSNs.
techniques divide the network into distinguished clusters.