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With the rapid development of wireless sensor network (WSN), Entity authentication in a wireless environment is highly desirable, but ensuring security and efficiency of this process is challenging. In this paper, we built a two-party entity certification model based on SEAHA (Secure and Efficient Handover Authentication) scheme, and made improvements on its authentication algorithm. The improved...
Wireless sensor networks (WSNs) enable the collection of physical measurements over a large geographic area. It is often the case that the authors are interested in computing and tracking the spatial-average of a function of the sensor measurements over a region covered by the WSN. Unfortunately, conventional methods need a large number of channel uses for collecting sensor data in the case of a large...
It is foreseeable that in the near future any object will have an Internet connection - this is the Internet of Things vision. All these objects will be able to exchange and process information and all information will be accessible from Internet. Some of these objects, with wireless support, are characterized by small size, power constrains and small computing resources. Connecting such devices to...
Visualization tools make it easier for users to observe the status of the wireless sensor networks (WSNs). So far, developers of WSNs have created various visualization tools under certain project/research backgrounds. These tools, however, are limited in certain application scenarios, since the underlying packet formats are hard coded into the programs. For this purpose, we present NetViewer, a universal...
Localization problem in wireless sensor networks (WSNs) has been widely studied recently. However, most previous work simply assume that all the nodes stay awake during the localization phase. This assumption clearly overlooks the common scenario that sensor nodes are usually duty-cycled in order to save energy. In this paper we propose a kind of novel DV (distance vector)-based localization algorithm...
This paper investigates the radio irregularity (RI) phenomenon and its impact on communication performance in wireless sensor networks (WSNs). Based on the theoretical analysis, we find that the RI phenomenon induces the asymmetric links problem. According to this discovery, we propose a novel HCT (Hop-count Correction Tree) scheme to handle this problem. HCT utilizes graph theoretical method to get...
This paper introduces the characteristics of the wireless network, including self-organizing, dynamic topology, wireless communications and so on, which make the network nodes have limited energy, the same as processing power, storage capacity and communication capabilities, therefore, the efficient use of energy, maximizing its network cycle is the wireless sensor network's core issue. Network coding...
Congestion has always been a serious problem for all kinds of communication networks. Wireless sensor networks (WSN) face special difficulties in dealing with congestion due to their unique requirements and constraints. Various congestion control schemes for WSN have been proposed recently. These schemes try to solve the problem either at the MAC layer or through a cross-layer approach. This paper...
Focus on anti-monitoring problem of the mobile object in sensory fields, a novel dynamic heuristic anti-monitoring path searching algorithm in sensory field by combining prior property of eight-neighbor quadratic cell and A* algorithm is designed. Theoretical analyses and experimental results show that, compared with conventional works, the new algorithm has better anti-monitoring performance which...
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