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Wireless sensor network is an important part of the Internet of Things. Preservation of privacy and integrity in wireless sensor networks is extremely urgent and challenging. This paper proposes an efficient mechanism, called PTK, for define and solve the practical and challenging problem of privacy-preserving and verifiable Top-k query processing in two-tier sensor network. PTK prevents adversaries...
Wireless Sensor Network is an important part of the Internet of Things. Data privacy preservation in wireless sensor networks is extremely urgent and challenging. To address this problem, we propose in this paper a privacy-preserving data aggregation protocol in wireless sensor networks. Compared to the previous research, our protocol protects the actual data from other nodes based on a rotation scheme...
Wireless sensor network is an important part of the Internet of Things. Preservation of privacy and integrity in wireless sensor networks is extremely urgent and challenging. To address this problem, we propose in this paper an efficient and secure range query protocol in two-tiered wireless sensor networks introducing master nodes. Our proposal not only prevents adversaries from gaining sensitive...
In this paper the limitations of the existing acoustic signal acquisition system have been analyzed, a novel acoustic signal acquisition system based on wireless sensor networks (WSN) has been proposed. The hardware structure and software design has been described in detail. The compressed sensing theory and the compression algorithm are also introduced. We use the system to collect the crawling voice...
This paper proposes two novel audio signal acquisition methods based on compressed sensing theory, which can perfectly achieve long time, continuous, high-speed acquisition of audio signal and real-time, reliable transmission of high-volume of sampling data in wireless sensor network with the limited resources. Reasonable experiments are designed to verify the effectiveness of the two algorithms,and...
In order to reduce the impact of inherent network time-varying transmission delay, packet loss and other phenomena on performance of the remote monitoring system based on wireless sensor network, a kind of multi-objective optimization control strategy based on network quality of service (QoS) management is proposed from the perspective of improving the overall system performance. For the data transmission...
Wireless technology enables the sensors to gather data to the base station through a so-called multi-hop communication. For data aggregation in wireless sensor networks, a tree overlay is necessary to guide the data transportation from one node to another in an efficient way. Here the data aggregation means that the data is merged while it is transported among the sensors. TinyDB and Cougar are typical...
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