Abstract
It is expected that in the near future wireless sensor network (WSNs) will be more widely used in the mobile environment, in applications such as Autonomous Underwater Vehicles (AUVs) for marine monitoring and mobile robots for environmental investigation. The sensor nodes’ mobility can easily cause changes to the structure of a network topology, and lead to the decline in the amount of transmitted data, excessive energy consumption, and lack of security. To solve these problems, a kind of efficient Topology Control algorithm for node Mobility (TCM) is proposed. In the topology construction stage, an efficient clustering algorithm is adopted, which supports sensor node movement. It can ensure the balance of clustering, and reduce the energy consumption. In the topology maintenance stage, the digital signature authentication based on Error Correction Code (ECC) and the communication mechanism of soft handover are adopted. After verifying the legal identity of the mobile nodes, secure communications can be established, and this can increase the amount of data transmitted. Compared to some existing schemes, the proposed scheme has significant advantages regarding network topology stability, amounts of data transferred, lifetime and safety performance of the network.
Highlights
Mobile wireless sensor networks (MWSNs) are a kind of wireless sensor network
The identity authentication after movement and the large energy consumption are the main bottleneck for the application of MWSNs
In the topology maintenance stage, aiming at the mobility of the nodes, a digital signature authentication method based on Error Correction Code (ECC) and the soft handover communication mechanism were adopted
Summary
Mobile wireless sensor networks (MWSNs) are a kind of wireless sensor network. Usually they are composed of any minority or majority of mobile sensor nodes in a monitoring area, and they can form an arbitrary network topology among the nodes. Research on an efficient topology control algorithm for MWSNs has great significance [4,5] It can make nodes adjust their own working state according to the environment changes and adapt to the dynamic environment, so it can make the WSN support node movement better, and extend the lifetime of the network, and improve the communication capacity [6]. Aiming at addressing some of the problems of MWSNs, like the frequent topology changes, large energy consumption and security weakness, a kind of efficient Topology Control algorithm support for nodes Mobility (TCM) is proposed in this paper. In the topology maintenance stage, aiming at the mobility of the nodes, a digital signature authentication method based on Error Correction Code (ECC) and the soft handover communication mechanism were adopted This can increase the amount of data transmitted and extend the network lifetime on the basis of considering the establishment of secure communication between the nodes.
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