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In the past decade, with the rapid development of wireless communication and sensor technology, ubiquitous smartphones equipped with increasingly rich sensors have more powerful computing and sensing abilities. Thus, mobile crowdsensing has received extensive attentions from both industry and academia. Recently, plenty of mobile crowdsensing applications come forth, such as indoor positioning, environment...
In Mobile Wireless Sensor Networks (MWSN), during routing, there may be an increase in congestion levels. It is required to automatically alter the traffic rate accordingly. In this paper, we propose to design an intra and inter cluster congestion control technique for MWSN. In intra-cluster congestion control, the Cluster Head (CH) proactively monitors the congestion within the cluster each time...
Present approaches to achieve k-coverage for Wireless Sensor Networks still rely on centralized techniques. In this paper, we devise a distributed method for this problem, namely Distributed VOronoi based Cooperation scheme (DVOC), where nodes cooperate in hole detection and recovery. In previous Voronoi based schemes, each node only monitors its own critical points. Such methods are inefficient for...
In a wireless sensor network, virtual coordinates provide most of the advantages of geographic routing strategies without actually relying on the location information of the nodes. Using a mobile sink provides advantages such as distributing energy consumption throughout the network. However, nodes need to be updated about the new virtual coordinate of the mobile sink as it moves. In this paper, we...
This paper investigates pose synchronization on the Special Euclidean group SE(3). We first introduce a passivity-based distributed velocity input law to achieve pose synchronization presented in our previous works, where the velocity input partially makes use of absolute pose information to cancel the coupling term between position and orientation. In this paper, we present a new velocity input based...
Cognitive radio (CR) networks rely on the spectrum sensing function to ensure that there is no interference to the licensed or primary users (PUs). Typically, sensing algorithms assume a static PU activity model, i.e., spectrum usage model, which is constant for a given channel and known in advance. This approach fails to capture the dynamic and time-varying behavior of the PUs. In this paper, a spectrum...
We propose a consensus protocol to solve the assignment problem in a completely distributed manner without any central management or global knowledge. Our protocol is based on the auction algorithm and ensures convergence to an assignment that is within n∈ of being optimal where n is the number of agents and ∈ is a design parameter. We then apply the proposed protocol to the mobile sensor dispatch...
This paper investigates the probabilistic connectivity of the Wireless Underground Sensor Networks (WUSNs). Due to the unique channel characteristics and the heterogeneous network architecture of the WUSNs, the connectivity analysis is much more complicated than in the terrestrial wireless sensor networks and ad hoc networks. To our knowledge, this connectivity problem in WUSNs was not addressed before...
In uneven ubiquitous computing environments, there exists no one design paradigm, such as client/server, code on demand, remote evaluation or mobile agent, which can do well in all types of contexts. Thus, it is an important task to evaluate the performances of these paradigms in various environments in order to select and use the optimal paradigm in the specified contexts. This paper analyzes the...
In this paper the coverage control for mobile sensor networks is studied. The novelty is to consider an anisotropic sensor model where the performance of the sensor depends not only on the distance but also on the orientation from the sensor to the target. Moreover we consider sensors with limited-range sensing defined by a probabilistic model and we assume that each robot is equipped with omni-directional...
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