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One of the fundamental tasks for spatial index trees constructed in wireless sensor networks is to determine the sensors, which can participate in the region query accurately and quickly. Most of the existing works focus on constructing the spatial index trees for single attribute sensors having the same sensing capability. The key principle underlying the design of these works is the exploitation...
Coverage holes often exist in wireless sensor networks deployed with static nodes. In order to patch the holes and recover the network performance, an algorithm based on mobile nodes is presented, which guides the mobile nodes to the position of holes, and then get the resilient coverage. The static sensors bound a coverage hole can compute the optimum position for the mobile sensors which, after...
The introduction of mobile node brings new security problems and challenges to Heterogeneous Wireless Sensor Network(HWSN), that is how to ensure the credibility, security and low consumption of mobile node in the entire network. In this paper, we design a highly efficient re-authentication protocol for mobile node (MRAP) in HWSN, which makes two communicating parties achieve identity authentication...
Development of theory and technology of wireless sensor network (WSN) has made it possible to satisfy the new demand for location-based services such as location based access control. However, most of existing techniques do not take into account the security of location estimate of some access node whose goal would be to try to confuse the localization system by amplifiers and high gain antennas....
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