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This paper proposes a distributed filtering scheme over sensor networks with topology switching and topology-dependent event-triggered transmission schemes. A new monitoring mechanism is introduced to identify the topology switching instants, and the system output is sampled by sensors when the network topology switches. Based on the time-varying sampled-outputs, a group of distributed topology-dependent...
Target traversing has been an important research topic in wireless sensor networks. Most works in this area consider the coverage issues of the target's moving paths. The support path is to find a path among sensors so that the target's support from the sensors is minimized, where support of the target from a sensor is defined as the inversely proportional to the distance of the target from the sensor...
Target traversing is an important research topic in wireless sensor networks. Most works in this area consider the coverage issues of the target's moving paths. The minimal exposure path problem is to find a path among sensors so that the target's total exposure to the sensors is minimized. Most existing traversal algorithms ensure the target to stay as far as possible from static sensors. In this...
Recent research shows that significant energy saving can be achieved in wireless sensor networks by using mobile elements (MEs) capable of carrying data mechanically. Though ME can reduce the energy consumption at each sensor node, it increases the latency from the time the data is generated at a node to the time the base station receives it. To address this issue, we proposed a collection-based approach...
Wireless Sensor networks are seen as one of the most promising emerging technologies, and location awareness is highly critical for wireless sensor networks for fulfilling its mission. Currently, the researches on localization generally focus on how to locate the position of the sensors, and at the same time, some researches on whether the network can be localizable are blooming, and some necessary...
This paper highlights the recent typical applications of the types of household, garment, accessory and network, and discusses the key technologies to realize the portability, security and intelligence of the personalized home healthcare measure technology and equipment, and also gives a brief guide to our department's novel research achievements, such as wireless communication technology, detection...
We consider the problem of planning path of a ??data mule?? in a cluster based sensor networks. Recent research shows that significant energy saving can be achieved by using this mobile data collection nodes. Although a data mule (DM) can reduce the energy consumption of the cluster head (CH), it increases the latency from the time the CH gain the data to the time the base station receives it. To...
Since there is no fixed infrastructure or centralized management in wireless sensor networks, a connected dominating set (CDS) has been proposed to serve as a virtual backbone. The CDS of a graph representing a network has a significant impact on the efficient design of routing protocols in wireless sensor networks. This problem has been studied extensively, in which all nodes have the same transmission...
Data gathering is a major function of many applications in wireless sensor networks (WSNs). In real world applications, it is unrealistic to guarantee all sensors have the same energy because they have different energy consumption. Moreover, sensor redeployment also results in the heterogeneous energy capacities. In this paper, An effective data gathering scheme for heterogeneous energy WSNs (EDGA)...
Wireless biomedical sensor network (WBSN) improves monitoring conditions, community medical and health services remarkably. Meanwhile, it poses prominent characteristics and challenges for its particular medical application. This paper highlights the recent researches and achievements in this field and also gives a guide to pivotal challenges of WBSN for researchers and engineers.
In this paper, we develop kappa-connectivity in wireless multi-hop networks in the presence of both the log-normal shadowing and Nakagami-m fading. The formula are generally applicable in a variety of realistic physical situations. Based on the results, we are able to find the critical node density to satisfy node kappa-connectivity almost with probability 1. In addition, kappa-connectivity shows...
This paper proposes a new energy-efficient local metric, termed as efficient advancement metric (EAM), for channel aware geographic-informed forwarding (CAGIF) algorithm, which studies the optimal selection of the relay nodes by taking into account the underlying channel conditions. The proposed metric considers not only the forward distance but also the packet successful probability under a certain...
In this paper, we study the network performance of a wireless multi-hop network in terms of the successful link probability and k-connectivity probability by taking into account shadowing. We provide the closed-form analytic results of the successful link probability, and henceforth k-connectivity, in the context of shadowing multi-hop networks. Given a certain number of nodes spatially distributed...
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