Carrier aggregation is one of the key features for LTE-Advanced. By means CA, users gain access to a total bandwidth up 100 MHz in order meet IMT-Advanced requirements. The system may be contiguous, or composed several non-contiguous chunks that are aggregated. This article presents summary supported CA scenarios as well an overview functionality LTE-Advanced with special emphasis on basic concept, control mechanisms, and performance aspects. discussion includes definitions new terms primary...

Low-power base stations such as femtocells are one of the candidates for high-data-rate provisioning in local areas, residences, apartment complexes, business offices, and outdoor hotspot scenarios. Unfortunately, benefits not without new challenges terms interference management efficient system operation. Due to expected large number user-deployed cells, centralized network planning becomes impractical, scalable alternatives must be sought. In this article we propose a fully distributed...

The 5 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">th</sup> generation (5G) of mobile radio access technologies is expected to become available for commercial launch around 2020. In this paper, we present our envisioned 5G system design optimized small cell deployment taking a clean slate approach, i.e. removing most compatibility constraints with the previous generations technologies. This paper mainly covers physical layer aspects concept design.

Frequent and accurate inspections of industrial components equipment are essential because failures can cause unscheduled downtimes, massive material, financial losses or even endanger workers. In the mining industry, belt idlers rollers examples such critical components. Although there many precise laboratory techniques to assess condition a roller, companies still have trouble implementing reliable scalable procedure inspect their field assets. This article enumerates discusses existing...

Beam management is central in the operation of beamformed wireless cellular systems such as 5G New Radio (NR) networks. Focusing energy radiated to mobile terminals (MTs) by increasing number beams per cell increases signal power and decreases interference, has hence potential bring major improvements on area spectral efficiency (ASE). This paper proposes a first system-level stochastic geometry model encompassing aspects beam problem: frequencies, antenna configurations, propagation;...

Robots are essential for carrying out tasks, example, in a nuclear industry, where direct human involvement is limited. However, present-day robots not versatile due to limited autonomy and higher costs. This research presents teleoperated DexterTM robot’s transformation into an autonomous manipulator sort segregation tasks. The system comprises single/dual arm client designed operate extreme radiation environments similar local manipulator. In this paper, initially, kinematic model convex...

Robots are essential for carrying out tasks, example, in a nuclear industry, where direct human involvement is limited. However, present-day robots not versatile due to limited autonomy and higher costs. This research presents merely teleoperated DexterTM robot’s transformation into an autonomous manipulator sort segregation tasks. The system comprises arm client designed operate extreme radiation environments similar single/dual-arm local manipulator. In this paper, initially, kinematic...

This paper addresses the interference management problem in context of LTE-Advanced femtocells. Due to expected large number user-deployed cells, centralized network planning becomes increasingly less viable. Consequently, we consider an architecture autonomous decision makers. Our main contribution this paper, denominated Generalized Autonomous Component Carrier Selection (G-ACCS), is a distributed carrier-based inter-cell coordination scheme that represents one step towards cognitive radio...

A next generation Beyond 4G (B4G) radio access technology is expected to become available around 2020 in order cope with the exponential increase of mobile data traffic. In this paper, research motivations and high level requirements for a B4G local area concept are discussed. Our suggestions on design system as well choice its key components also presented.

Recent advances in the research of autonomous vehicles have showed a vast range applications, such as exploration, surveillance and environmental monitoring. Considering mining industry, it is possible to use prospection minerals commercial interest beneath ground. However, tasks geophysical surveys are highly dependent on specific sensors, which mostly not designed be used these new vehicles. In this work, we propose novel magnetic survey pipeline that aims increase versatility, speed...

Uncoordinated deployment of eNBs in local area environments will benefit from having support for dynamic frequency re-use mechanisms also known as "autonomous component carrier selection", where each eNB dynamically selects to use only a subset the available carriers (i.e. using one up maximum number carriers). Component are selected autonomously by depending on offered traffic, interference coupling with neighboring cells, etc. In this contribution we propose simple and distributed scheme...

LTE-advanced systems, which aim to provide high data rate wireless services, have received world-wide researching interests nowadays. In this paper, the performance of fixed frequency reuse with different factors is studied in systems. Performance measured terms both average cell throughput and edge user throughput. It found that a properly chosen factor respect size (which leads level inter-cell interference), can offer up 30% gain much higher for cell-edge local area (LA). This from makes...

In this study, a smart and affordable system that utilizes an RGB-D camera to measure the exact position of operator with respect adjacent robotic manipulator was developed. This developed technology implemented in simulated human operation automated manufacturing robot achieve two goals; enhancing safety measures around by adding for detection control developing will allow between human-robot collaboration finish predefined task. The utilized Xbox Kinect V2 sensor/camera Scorbot ER-V Plus...

The recent introduction of carrier aggregation in LTE-Advanced enables new possibilities designing frequency domain interference reduction and management schemes. These methodologies are extreme interest the case dense uncoordinated deployments femtocells. In such scenarios, deployment cells coupled with scarcity resources may lead to a potentially disruptive amount interference, which severely affects performance system. This contribution presents novel method inspired by graph coalitional...

The ideal successive interference cancellation paradigm helps to achieve the capacity of some multiuser channels, such as Gaussian multiple access and broadcast channels. However, its performance is much more modest under realistic constraint on decodability signal. In this paper, we rely basic stochastic geometry models analytically evaluate receivers in a local area network scenario, `realistic' rate-constraints Analytical findings are validated by extensive Monte Carlo experiments....

The need for continuous safety improvements and increased operational efficiency is driving the mining industry through a transition toward automated operations. From communications perspective, this introduces new set of high-bandwidth business-critical mission- critical applications that to be met by wireless network. This article fundamental concepts behind open-pit discusses why ever-changing environment strict industrial reliability requirements pose unique challenges traditional...

Low-power home base stations, also known as femtocells, are one of the strong candidates for high data rate provisioning in indoor environments. Unfortunately, benefits not without new challenges terms interference management and efficient system operation. In this paper we take a closer look at several aspects associated with deployment LTE-Advanced eNBs under two different access policies: closed subscriber group (CSG) open (OSG). Our results derived from extensive downlink level...

Beam management is central in the operation of dense 5G cellular networks. Focusing energy radiated to mobile terminals (MTs) by increasing number beams per cell increases signal power and decreases interference, has hence potential bring major improvements on area spectral efficiency (ASE). This benefit, however, comes with unavoidable overheads that increase MT speed. paper proposes a first system-level stochastic geometry model encompassing aspects beam problem: frequencies, antennas,...

WiFi is the prevalent wireless access technology in local area deployments and expected to play a major role mobile operator's data offloading strategy. As result, having simple tools that are able assess potential of IEEE 802.11 networks vital. In this paper, we propose closed-form solution calculate down- uplink throughput values per user under full-buffer traffic when small cells used offload macrocells. Extensive measurement campaigns simulation results demonstrate there an excellent...

In this paper we present the results of an extensive measurement campaign performed at two large iron ore mining centers in Brazil 2.6 GHz band. Although several studies focusing on radio propagation underground mines have been published, data and careful analyses for open-pit are still scarce. Our aim filling gap literature. The research is motivated by ongoing mine automation initiatives, where connectivity becomes critical. This presents first set comprising measurements under a gamut...

In order to accommodate the growing traffic demand in GSM cellular networks, several features are continuously being developed improve voice capacity of GSM/EDGE radio access network (GERAN). this paper we investigate a considering use some these features, namely, interference rejection combining (IRC), single-antenna cancellation (SAIC), source-adaptive AMR (SA-AMR), dynamic frequency and channel allocation (DFCA), 8-PSK channels. These techniques have been previously investigated...

5G will play a pivotal role in the digitization of industrial sector and is expected to make best use every bit spectrum available. In this light, paper presents results an extensive measurement campaign two iron-ore open-pit mining complexes, at 700 MHz 2.6 GHz bands, considering macro small cell deployments. The study further motivated by rise unmanned machinery industry. We present values path loss exponents, shadow fading standard deviations, autocorrelation distances inter-frequency...

In this paper, we investigate the suitability of propagation models ITU-R 526, Okumura Hata, COST Hata and Standard Propagation Model (SPM) to predict path loss in open-pit mines. The are evaluated by comparing predicted data with measurements obtained two operational iron-ore mining complexes Brazil. Additionally, a simple deterministic model, based on inclusion an effective antenna height term is proposed compared other methods. results show that model root-mean-square error (RMSE) values...

Reduced workspace is the main parallel robot disadvantage. It generally due to configuration, mainly platform orientation constraint, present work intends find maximum sphere within workspace, i.e., singularity-free regions. These regions are related through Roll-Pitch-Yaw angles. Therefore, an optimization genetic algorithm used determine initial corresponding largest volume. In this algorithm, geometrical parameters and direct inverse singularities constraints. The constraints may be...