Abstract
The distributed clustering method is widely used to extend network lifetime in traditional wireless sensor networks. However, it is difficult to achieve the idea performance of the whole network, such as transmission rate, energy consumption, and control overhead, neglecting the global stability of the network. To tackle this problem, a centralized mobility-based clustering (CMBC) protocol is proposed in the software defined sensor network. The method of CMBC mainly consists of two aspects: first, CMBC clusters the nodes with the connection time between the mobile nodes (i.e., noncluster head nodes, non-CH) and the cluster head (CH) and establishes stable topological structures between the non-CHs and the CH; second, when emergencies occur, the centralization management control center sends the configuration files to replace the CH. Compared to the distributed network of MBC, WCRA and IMP-MECA protocol, the proposed method can be applied in scenarios with high-speed mobile nodes to improve the network performance in terms of transmission successful rate, average power consumption, and average control overhead.
Highlights
Wireless sensor networks (WSNs) are self-organized ad-hoc network capable of sensing, data processing, and forwarding different physical parameters to users using multi-hop communication
The contribution of this paper is mainly reflected in the following aspects: first, Considering the importance of clustering strategy in load balancing, a clustering protocol supporting node mobility is proposed in large-scale mobile wireless sensor network; second, to reduce the energy consumption in distributed mobile wireless senor network, we develop a mobility-based clustering protocol named as centralized mobility-based clustering (CMBC) in centralized wireless sensor network, which is described as software defined sensor network (SDSN)
2.2 CMBC protocol description Inspired by the mobility-based clustering (MBC) protocol, the CMBC protocol is proposed to increase the control overhead and the power consumption caused by the request information sent to join the new cluster and avoid changes in the topological structure of the wireless mobile sensor network caused by the mobility of nodes
Summary
Wireless sensor networks (WSNs) are self-organized ad-hoc network capable of sensing, data processing, and forwarding different physical parameters to users using multi-hop communication. [4], the authors proposed a balanced clustering algorithm with distributed self-organization, which mainly considers the distance between nodes and the density distribution of nodes, the simulation results show that the algorithm can effectively balance the size of clusters and prolong the network lifetime. The contribution of this paper is mainly reflected in the following aspects: first, Considering the importance of clustering strategy in load balancing, a clustering protocol supporting node mobility is proposed in large-scale mobile wireless sensor network; second, to reduce the energy consumption in distributed mobile wireless senor network, we develop a mobility-based clustering protocol named as CMBC in centralized wireless sensor network, which is described as SDSN.
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