title: Calculating the number of cluster heads based on the rate-distortion function in wireless sensor networks.
abstract: Due to limited resources in wireless sensor nodes, energy efficiency is considered as one of the primary constraints in the design of the topology of wireless sensor networks (WSNs). Since data that are collected by wireless sensor nodes exhibit the characteristics of temporal association, data fusion has also become a very important means of reducing network traffic as well as eliminating data redundancy as far as data transmission is concerned. Another reason for data fusion is that, in many applications, only some of the data that are collected can meet the requirements of the sink node. In this paper, we propose a method to calculate the number of cluster heads or data aggregators during data fusion based on the rate-distortion function. In our discussion, we will first establish an energy consumption model and then describe a method for calculating the number of cluster heads from the point of view of reducing energy consumption. We will also show through theoretical analysis and experimentation that the network topology design based on the rate-distortion function is indeed more energy-efficient.
authors.affiliation: College of Computer Science and Technology, Beijing University of Technology, Beijing 100124, China ; College of Economics Management, Hebei University of Science and Technology, Shijiazhuang 050018, China.
authors.forename: Mingxin
authors.initials: M
authors.lastname: Yang
authors.affiliation: School of Software Engineering, Beijing University of Technology, Beijing 100124, China.
authors.forename: Jingsha
authors.initials: J
authors.lastname: He
authors.affiliation: College of Computer Science and Technology, Beijing University of Technology, Beijing 100124, China.
authors.forename: Yuqiang
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D016000:Cluster Analysis; D003195:Computer Communication Networks; D008962:Models, Theoretical; D059015:Wireless Technology
references.citation: ScientificWorldJournal. 2013 Oct 27;2013:704504
references.pmid: 24288502
references.citation: ScientificWorldJournal. 2014 Feb 13;2014:359897
references.pmid: 24696640