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Mobile-hierarchy architecture was widely adopted for query a deployed wireless sensor network in an intelligent transportation system recently. Secure handshake among mobile node and ordinary nodes becomes an important part of an intelligent transportation system. For dividing virtual communication area, pre-negotiation should be conducted between mobile node and ordinary node before formal handshake...
A composed localization error estimation method is presented for the application in wireless sensor networks (WSNs) which employs maximum likelihood (ML) to locate. Two statistic indexes are given in this method to characterize the whole localization performance of WSN in error aspect. The number of WSN nodes can be determined before deploying to achieve the necessary localization accuracy. Through...
Wireless sensor networks is one of important information acquisition methods and also has been a promising technique for many applications in recent years. Node localization is one of challenging and fundamental topics in distributed WSNs research. The goal of this paper is to propose an efficient range-free localization algorithm in WSN. We use directional antennas other than omnidirectional antennas...
A map building method based on wireless sensor networks (WSNs) is presented in this paper which applies the technology of WSNs to the field of mobile robots. In our scheme, a series of factors blocking the mobile robot are considered carefully and besides, multiple information is employed to develop the practicability of maps. The general used gird map is provided through our method. Extensive simulations...
It's a new and good method to apply wireless sensor networks on robot navigation. We proposed an environment map free navigation for robot based on wireless sensor networks. In this system, the robot did not need to obtain the environment map and can get online navigation. The wireless sensor nodes collected environment and position information and made distributed information fusing to give a path...
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