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Barrier coverage has important applications in military and homeland security. Given a set of mobile sensors and their initial positions, how to move these sensors to achieve the required barrier coverage while maintaining balanced battery consumption across all sensors is a challenging problem of great significance in both theory and applications. Given a set of grid points on the barrier line, a...
Nowadays wireless sensor network (WSN) of mobile nodes is used in most of the sensor applications especially in event-driven applications. The choice of mobile nodes are obvious as they are much more versatile than static sensors. Mobile nodes can be deployed in any scenario and cope with rapid changes in the environment. One of the fundamental problem of mobile WSN is energy consumption and this...
Given a random deployment of heterogeneous mobile nodes having different sensing ranges, this paper addresses the problem of covering a region using minimum number of nodes with minimum displacement. We propose an energy-efficient and light-weight self-organized distributed greedy heuristic to maximize area coverage such that the amount of computation, rounds of communication, and the distance traversed...
As mobile devices and wearable devices become more pervasive in the past decade, natural human-computer interaction has drawn much attention among scientists. Hence, people pay more and more attention to new approaches and age of your choice. However, you will need to sign the English version of the form below. Technologies for bridging the human-computer barrier. Eyes-Free based human-computer interaction...
The hierarchical model of interaction between mobile sensors in the wireless sensor networks using unmanned aerial vehicles is proposed in the paper. Proposed model is based in the conceptual representation of the wireless sensor networks control systems as a hierarchical structure with vertical connections that define management tasks subordination in the wireless sensor networks using unmanned aerial...
Sensor localization is a fundamental and crucial problem in wireless sensor network (WSN). A few methods have been proposed to deal with this issue, while schemes with mobile anchors stand out, due to the characters of low cost, flexibility and high precision. One key issue of the anchor based scheme is path planning. Proper path planning can guarantee good coverage of the whole sensing field while...
Barrier coverage is attractive for many practical applications of wireless sensor networks. In stationary networks, if the number of deployed sensors is not large enough, the intruder may pass though the barrier gaps undetected. Recently, using mobile sensors to repair gaps and improve network barrier coverage performance has attracted much attention. We focus on constructing energy efficient strong...
Low-Power and Lossy-Network (LLN) are usually composed of static nodes, but the increase demand for mobility in mobile robotic and dynamic environment raises the question how the a routing protocol for Low-Power and Lossy-Networks such as (RPL) would perform in where a mobile sink is deployed. In this paper we investigate and evaluate the behaviour of the RPL protocol in fixed and mobile sink environments...
Mobile phone users in Participatory sensing (PS) systems are requested to collect information from their nearby locations. To ensure accurate results this exercise is well ordered and coordinated with mobile objects assigned to collect data in each data collection point. The users location information should be concealed all the times. Several techniques in PS have been proposed recently to provide...
By reducing the need to perform multi-hop routing over long communication paths, the use of mobile data gathering devices in highly distributed wireless sensor networks (WSNs) can both save energy and cut down on the number of nodes that need to be deployed. However, reliable data deliver to mobile devices remains a challenging problem, especially in WSN environments that have a high bit error rate...
Mobile sinks have been shown to balance energy and help to achieve uniform power consumption across wireless sensor networks (WSN). In this paper, a compressive sensing (CS) based algorithm for distributed mobile sensors to collect data from static sensors deployed in a sensing area is proposed. The mobile sensors deployed randomly in the field are capable as mobile sinks. They move randomly in the...
Cell phones and other mobile devices become the part of human culture and change activity and lifestyle patterns. Mobile phone technology continuously evolves and incorporates more and more sensors for enabling advanced applications. Latest generations of smart phones incorporate GPS and WLAN location finding modules, vision cameras, microphones, accelerometers, temperature sensors etc. The availability...
We propose application of Opportunistic Resource Utilization Networks (Oppnets), a novel type of Mobile Ad Hoc NETworks (MANETs), for ad hoc networking of Unmanned Aerial Vehicles (UAVs) in surveillance missions. Oppnets provide effective resource virtualization and adaption to highly dynamic and unstable nature of MANETs. They can be viewed as middleware to facilitate building flexible and adaptive...
As a high-tech industry, the development of the Internet of Things industry plays an important role in the industrial transformation and upgrading of a country. In light of the six elements of the “Diamond Model”, this paper constructs an indicator system to assess the competitiveness of the Internet of Things industry. Using a comprehensive evaluation method which combines Gray Relational Analysis...
Crowdsourcing systems, by using smart devices like smartphones and iPad, have been widely used in various domains, but are currently facing new challenges. On one hand, different tasks offer different amount of incentive budgets in multitask systems, thus those tasks pay more should be satisfied preferentially. On the other hand, even if there are not enough budget for a sensing task, the system should...
Cooperative Spectrum Sensing has been investigated in Rayleigh-fading environments over non-ideal reporting channels, where the simulation results have shown that its performance is limited by the probability of reporting errors. This paper proposes a transmit diversity scheme using Differential Space-Time coding where channel state information is not required. By regarding multiple pairs of Cognitive...
With the rapid development of the mobile computing and wireless network technology, the mobile telehealth system has been used more and more widely. An important issue of the telehealth system is that too many network traffics are generated while transferring data from the sensors to servers. To solve this problem, we propose a differential algorithm for reducing the network traffics of the telehealth...
For integrated sensor networks, some methods to faster retrieve the sensor network site that has the queried mobile sensor data have been proposed. In these methods, the systems create the indexes for the site retrieval based on the locations at that sensor data are obtained. The systems can much faster retrieve the queried data by creating the indexes also based on the sensing information such as...
The developments in wireless sensor networks, mobile technology and cloud computing have been pushing forward the concept of intelligent or smart cities, and each day smarter infrastructures are being developed with the aim of enhancing the well-being of citizens. These advances in technology can provide considerable benefits for the diverse components of smart cities including smart health which...
Wireless sensor networks can be used to monitor and gather information from different environments, supporting a large set of applications that need constant monitoring. In some applications, the use of multiple mobile sinks can improve the network traffic and reduce energy consumption, leading to a higher network lifetime. Depending on the application characteristics, the priority of each sensor...
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