The article describes the potential gain by spectrum sharing between cellular operators in terms of network efficiency. focus study is on a specific resource scenario: two downlink transmission. If frequency bands are allocated dynamically and exclusively to one operator - case called orthogonal significant gains achievable throughput (spectrum 50 percent 100 percent) user satisfaction reported for asymmetric scenarios at link system level as well from hardware demonstrators. Additionally,...

Energy Harvesting Wireless Sensor Devices are increasingly being considered for deployment in sensor networks, due to their demonstrated advantages of prolonged lifetime and autonomous operation. However, irreversible degradation mechanisms jeopardize battery lifetime, calling intelligent management policies, which minimize the impact these phenomena while guaranteeing a minimum Quality Service (QoS). This paper explores mathematical characterization devices, focusing on interplay between...

The use of a larger bandwith in the millimeter wave (mmWave) spectrum is one key components next generation cellular networks. Currently, part this band allocated on co-primary basis to number other applications, such as fixed satellite services (FSSs). In paper, we investigate coexistence between network and FSSs mmWave scenario. light parameters recommended by standard recent results presented literature channel model, analyze different BSs deployments antenna configurations at...

Scheduling updates from remote sensors is a key task for the internet of things (IoT). In this context, mathematical concept age information often used to capture freshness received data. This is, in turn, relevant optimize frequency exchanges, especially resource constrained (e.g., energy-limited) sensors. Most investigations on subject assume that transmitter can leverage knowledge at receiver side decide when send data, even communication channel unreliable. reality, tracking outcome...

Over the years, radio resource management has been benchmarked mostly by its technical merits. A service provider, however, must also reckon with economics. When financial needs of provider and satisfaction users are considered, common objectives in management, like maximising throughput or meeting various quality constraints, may no longer be sufficient. We analyse next generation communication systems including models economics, which have presented literature, reasonable considerations to...

Wireless sensors can be integrated with energy harvesting (EH) devices to enable long-term, autonomous operation, necessitating efficient management. Existing research assumes knowledge of the state-of-charge (SOC) rechargeable battery; however, accurate SOC estimation in real-world is typically costly or impractical. This paper investigates impact imperfect and design policies cope such uncertainty. The optimization complexity reduced by decoupling different time scales system: first,...

Resource sharing is an issue for different fields of applications, giving rise to the so-called "Tragedy commons." This particularly important in reference upcoming Internet Things, where selfish behaviors from individual users jeopardize system cooperation, on which most network functions rely. We analyze two ways splitting resources context channel allocation wireless systems. describe outcomes strategies and we identify criteria emergence such games.

Underwater sensor networks are a very interesting case of wireless communication in extreme conditions. They exploit acoustic sea water and nowadays used surveillance monitoring applications. These present challenging aspects, such as low data rates large delays, well the special propagation characteristics underwater medium. We propose an integer-linear programming approach to jointly optimize routing, link-scheduling node placement scenario. Accounting for these aspects communications...

Joint design and optimization of traditionally independent problems such as routing link scheduling have recently become one the leading research trends in wireless mesh networks. Although technically challenging, cross-layering is, fact, expected to bring significant benefits from network resource exploitation standpoint achieve high system utilization. In this article we propose a versatile framework for joint scheduling, introducing notion activation constraints, which are related...

We present a framework, based on Markov models, for the analysis of error control techniques in video transmission over wireless channels. focus retransmission-based techniques, which require feedback channel but also enable to perform adaptive control. Traditional studies these methodologies usually consider uniform stream data packets. Instead, poses non-trivial challenge that packets have different sizes, and, even more importantly, are incrementally encoded; thus, carefully tailored...

Interactions between pedestrians, cyclists, and human-driven vehicles have become a major concern for traffic safety over the years. The upcoming age of autonomous will further raise problems on whether self-driving cars can accurately avoid accidents; other hand, usability issues arise pedestrians dominate road at expense that be programmed to accidents. This paper proposes some game theoretical models applied scenarios, where strategic interaction pedestrian an vehicle is analyzed. games...

The increasing demand for higher data rates has accelerated research on the next generation of mobile cellular networks (5G). One key factors 5G is use a larger bandwidth allocated in millimeter wave (mmWave) frequency spectrum. In particular, one candidate bands portion spectrum between 17 and 30 GHz that currently used by other technologies such as fixed satellite services (FSS) network backhaul. this paper, we analyze coexistence FSS considering main characteristics mmWave recently...

Coordination and cooperation among transmitters are fundamental paradigms to improve the performance of next-generation mobile networks. By grouping multiple into clusters, interference can be managed at end user's side. In this letter, we present a novel distributed clustering algorithm that adapts cluster configuration according users distribution average size. We compare obtained with other solutions in an LTE scenario using open-source network simulator ns3. Our proposed is shown...

Breast cancer is one of the commonest cause deaths in women. It starts developing when threatening bumps start forming from breast cells, and unfortunately most diagnoses happen later stages, thus resulting low chances survival for patient. So early detection prognosis, it necessary to detect benign or nature bumps. In this paper, Artificial Neural Networks (ANN) Decision Tree (DT) classifiers are used develop a machine learning (ML) model using Wisconsin diagnostic (WDBC) dataset, order...

In this letter we investigate the packet delay statistics of a fully reliable selective repeat ARQ scheme by considering discrete time Markov channel with non-instantaneous feedback and assigned round-trip m. Our focus is on studying impact arrival process experienced packet. An exact model introduced to represent system constituted transmitter buffer, m slots, state. By means model, evaluate discuss analyze parameters, in particular rate,

In this paper, we process channel Signal-to-Noise-Ratio time series gathered in the proximity of Pianosa island, Italy, Summer 2009. These traces are used to model performance capacity-achieving code ensembles as employed an Incremental Redundancy (IR) Hybrid Automatic Repeat reQuest (HARQ) error control scheme. We apply a code-matched state quantization technique aimed at representing evolution over with low error; among quantized states is then represented using Markov model, which base...

Relay sharing has been recently investigated to increase the performance of coexisting wireless multi-hop networks. In this paper, we analyze a scenario where two ad hoc networks are willing share some their nodes, acting as relays, in order gain benefits terms lower packet delivery delay and reduced loss probability. Bayesian network analysis is exploited compute probabilistic relationships between local parameters overall performance, whereas selection nodes made by means game theoretic...

We investigate a jamming problem in an underwater acoustic sensor network, where nodes try to communicate spite of adversary that is attempting block their communications. take into account the attenuation channels strongly dependent on communication distance and signal frequency. frame game theoretic setup, as Bayesian zero-sum network acts maximizer transmission capacity, while jammer minimizer. In particular, we are interested evaluating effect nodes' position resulting equilibrium. The...

We investigate the psycho-linguistic features of online discourse over climate change, focusing on its modifications throughout years 2017–2019 as a result collective actions emerging and spreading worldwide. seek to understand connection between digital activism psychological processes related social drives. To this end, semantic network is derived from platform Twitter, evolution traced time, tracking textual proxies identity empowerment. Original proposals are made identify communities...

An analytical derivation of age information is provided for a data stream with sequential content transmitted over an error-prone channel, using selective repeat automatic request error control. The impact the process and/or round trip time on resulting assessed. analysis allows to generate entire statistics AoI. results highlight consequences such as mild correlation in process, where bursts are not significantly longer than time, causing decrease This can serve reference devise...