Zhenzhong Dong

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Node localization is an important problem for location-dependent applications of wireless sensor networks. Aiming at the positioning problem of wireless sensor networks node location, an improved DV-Hop localization algorithm is proposed in this paper. The proposed method firstly recalculates the hop-size and sends different correction along different(More)
Wireless sensor networks (WSN) have been widely used in many important areas. Medium access control (MAC) protocols have a significant influence on the function and performance of WSN. In existing protocols such as sensor MAC (SMAC), the sensor nodes reduce energy consumption by introducing an active/sleep duty cycle, which always leads to more control(More)
Localization is a fundamental and essential problem for wireless sensor networks (WSNs). Many localization algorithms have been proposed. Making use of the unused or underutilized information which is able to be obtained in present hardware is a reasonable way to enhance the performance of the existing localization algorithms. In this paper, a local(More)
The accuracy of localization is a significant criterion to evaluate the practical utility of localization algorithm in wireless sensor networks. By analyzing the impact of the network topology on the position accuracy of representative localization algorithms, in this paper, we proposed a novel Sequential Chain Directional Transmission-based Localization(More)
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