Ayman Radwan

• PhD, CEng, PM at Alexandria shipyard

Fog–cloud-based hierarchical task-scheduling methods are embracing significant challenges to support e-Health applications due to the large number of users, high task diversity, and harsher service-level requirements. Addressing the challenges of fog–cloud integration, this paper proposes a new service/network-aware fog–cloud hierarchical resource-...

Advancements in fiber optic sensor technology and telecommunications have paved the way for innovative health monitoring systems. However, previous works in this area have often been limited by the lack of comprehensive datasets, hindering the development of accurate and robust solutions. This paper addresses this gap by presenting a novel dataset...

Multi-access edge computing service migration is a technology whose key objective is to support ultra-low-latency access to services. However, the complex ultra-large-scale edge service migration problem requires extensive research efforts, regarding the foreseen ultra-densified edge nodes in 5G and beyond. In this paper, we propose a novel dynamic...

Future networks are envisaged to support an increasingly wide range of diverse services, with distinct service requirements. Network slicing presents an economically sustainable solution to properly handle these stringent requirements, on top of a common physical infrastructure. The support of network slicing at different ran resource management ta...

Nowadays, our society has been experiencing the development of Healthcare 4.0, focusing on digitalization by utilizing cloud/fog computing-based consumer Internet-of-Things (CIoT). Meanwhile, Industry 5.0 has been defined recently, targeting improving the current Industry 4.0. Inspired by Industry 5.0, we are among the first wave of researchers to...

Upgrading of healthcare systems has never been so urgent in recent years, after the witness of limited resource availability and efficiency during the global pandemic of COVID-19. Although Healthcare 4.0 has been raised for years, we are still in the transition from Healthcare 3.0 to it, pursuing smart and efficient healthcare services with low cos...

While great advances have been made in vehicular networks, especially in terms of softwarization and dynamic infrastructure, increasing dependence on Artificial Intelligence (AI) continues to challenge optimizations of the Energy Efficiency (EE)-Quality of Experience (QoE) tradeoffs. Moreover, optimal achievement of trade-off between EE and QoE wil...

There is a growing tendency for people to spend more and more hours of their day sitting. This position leads to an increase in the postural problems in the population. For workers who have to spend long hours at work, in a seated position, investment should be directed towards the development of equipment that improves their working conditions, su...

In this paper, it is proposed an indoor localization system, relying on multiplexed fiber Bragg grating (FBG)-based accelerometers, targeting the activity levels monitoring of elders living alone. From the proposed consumer sensing system, floor vibration patterns generated by walking with high precision and reliability, were obtained. An indoor lo...

This work aims to minimize the power consumption of cloud virtualization components by addressing the important challenge of designing allocation schemes that cater for both radio and computational resources in a virtualized cloud-based radio environment. Unlike previous efforts, we consider the realistic behavior of radio resource heads (RRHs) ass...

5G and beyond mobile networks hold the promise of supporting a vast emergence of new services and increased traffic growth. This represents a challenge for mobile networks operators, which are faced with the pressure of providing a variety of these services according to the stringent requirements of future mobile network generations, while still be...

In order to fit the requirements of future enterprise management networks with multiple service providers, conventional Mobile Edge Computing enabled Small Cells (MEC-SCs) peer-offloading requires research efforts towards fully-decentralized computation-efficient global-optimal QoS-aware load balancing, while ensuring service providers' privacy pro...

Network automation has been bred by the deployment of 5G based Industrial Internet-of-Things (IIoT) in Industry 4.0, and further approaching pervasive AI and human-robot-interaction/-collaboration towards 6G based Industry 5.0. Hitherto, to the best of the authors knowledge, research efforts are still required to provide a comprehensive review of t...

Network automation has originated in the early 21st century by the International Business Machines Corporation (IBM), which was initialized conceptually, including automated configuration, optimization, healing, and protection of network deployment. In the framework of 5G and upcoming 6G, softwarization and virtualization, as well as the conceived...

The demographic shift of the population toward an increased number of elder citizens, together with the sedentary lifestyle we are adopting, is reflected in the increasingly debilitated physical health of the population [...]

Local energy trading has attracted the attention of many researchers as a result of its promising benefits. These benefits include minimizing gas emission, reducing power shortage , and establishing a competitive energy market. However, the energy trading between several prosumers causes trust, security, and privacy challenges in energy systems. On...

In this article, Internet of Things (IoTs) devices are used for sensing the data through which the device owners earn revenue. Interested users can purchase data from IoT device owners, according to their demands. However, users are not confident about the quality of data they are purchasing. Moreover, the users do not rely on the device owner and...

In literature, proposed approaches mostly focused on household appliances scheduling for reducing consumers' electricity bills, peak-to-average ratio, electricity usage in peak load hours, and enhancing user comfort level. The scheduling of smart home deployed energy resources recently became a critical issue on demand side due to a higher share of...

In recent studies, emphasis has been placed on optimal power flow (OPF) problems in traditional thermal, wind, and solar energy sources-based hybrid power systems. Various metaheuristic algorithms have been proposed to find optimal solutions to the OPF problems in the hybrid power system. The OPF, due to the quadratic nature of its primary objectiv...

Over the past few years, Micro Grids (MGs) have gained much popularity due to two-way communication in the power network with special emphasis on Distributed Energy Resources (DERs), which comprise of both Renewable Energy Sources (RESs) and Nonrenewable Energy Sources (NRESs). Currently, the main focus of researchers is to deal with the intermitte...

Microgrids in smart grid development create a new era towards resilient energy supply, while rendering complicated cyber-physical system development towards high scalability and comprehensiveness. Heterogeneous Small Cell based Networks (HSCNs) endow a suitable cyber infrastructure for microgrid based cyber-physical systems. To tackle this emerging...

Electrical capacitance tomography (ECT) has been used to measure flow by applying gas-solid flow in coal gasification, pharmaceutical, and other industries. ECT is also used for creating images of physically confined objects. The data collected by the acquisition system to produce images undergo blurring because of ambient conditions and the electr...

With the current sedentary lifestyle we are living, along with an aging population, there is a noticeable rise in the number of impaired and physically debilitated citizens. Such debilitations require new solutions to aid in the rehabilitation process and lift the burden on healthcare systems, which are already overwhelmed in many developed countri...

An expansion of services and unprecedented traffic growth is anticipated in future networks, aligned with the adoption of the long-awaited Fifth Generation (5G) of mobile communications. To support this demand, without exposing mobile operators to the pressure of CAPEX and OPEX, 5G uses new frequency bands, and adopts promising trends, including: d...

The continuous advances in sensing and telecommunications fields have boosted the development of new technologies towards the improvement of healthcare systems. This drive of knowledge is required to address the rise of life expectancy of an ageing population with increased associated physical impairments, in order to ease the burden on already str...

Network coding (NC)-enabled mobile small cells are observed as a promising technology for fifth-generation (5G) networks that can cover the urban landscape by being set up on-demand at any place and at any time on any device. Nevertheless, despite the significant benefits that this technology brings to the 5G of mobile networks, major security issu...

The highly anticipated 5G network is projected to be introduced in 2020. 5G stakeholders are unanimous that densification of mobile networks is the way forward. Densification will be realized by means of small cell technology and it is capable of providing coverage with a high data capacity. The EU funded H2020-MSCA project “SECRET” introduced cove...

Ensuring enough network resources for all emerging 5G mobile services, with the advent of 5G will be vital. Network sharing is seen as one of the adopted technologies of 5G, to enhance resource utilization by optimizing resource usage among different operators. A key enabler for network sharing is virtualization. While virtualization of the core ne...

In this paper, a 2-stage Doherty power amplifier and a single class B at 3.800 GHz, based on a 10 W GaN-HEMT technology using the bandwidth up to 6 GHz have been designed. The Doherty structure employes a class B bias condition for the main and a class C configuration for the auxiliary devices in the Agilent’s ADS design platform. An uneven Wilkins...

The continuous growth in wireless devices connected to the Internet and the increasing demand for higher data rates put ever increasing pressure on the 4G cellular network. The EU funded H2020-MSCA project “SECRET” investigates a scenario architecture to cover the urban landscape for the upcoming 5G cellular network. The studied scenario architectu...

The recent explosive growth of mobile data traffic, the continuously growing demand for higher data rates, and the steadily increasing pressure for higher mobility have led to the fifth-generation mobile networks. To this end, network-coding (NC)-enabled mobile small cells are considered as a promising 5G technology to cover the urban landscape by...

Abstract. The recent explosive growth of mobile data traffic, the continuously growing demand for higher data rates, and the steadily increasing pressure for higher mobility have led to the fifth-generation mobile networks. To this end, network-coding (NC)-enabled mobile small cells are considered as a promising 5G technology to cover the urban lan...

In an era of unprecedented progress in sensing technology and communication, health services are now able to closely monitor patients and elderly citizens without jeopardizing their daily routines through health applications on their mobile devices in what is known as e-Health. Within this field, we propose an optical fiber sensor (OFS) based syste...

This book constitutes the thoroughly refereed conference proceedings of the 12th International Conference on Cognitive Radio Oriented Wireless Networks, CROWNCOM 2017, held in Lisbon, Portugal, in September 2017. The 28 revised full papers presented were carefully reviewed and selected from numerous submissions and cover the evolution of cognitive...

The vision of wireless multimedia sensor networks (WMSNs) nowadays is to afford real-time multimedia applications using the pervasive wireless sensors around us. This necessitates strict QoS conditions, which have led to new emerging challenges in terms of data delivery in the Internet of Things era. Accordingly, multipath routing protocols with mu...

Wireless sensor networks suffer from some limitations such as energy constraints and the cooperative demands essential to perform multi-hop geographic routing for real-time applications. Quality of Service (QoS) depends to a great extent on offering participating nodes an incentive for collaborating. In this paper, we present a novel traffic model...

The advances and fast spread of mobile devices and technologies, we witness today, have extended its advantages over medical and health practice supported by mobile devices, giving rise to the growing research of Internet of Things (IoT), especially the e-Health field. The features provided by mobile technologies revealed to be of major importance...

In the future connected societies, everyone and everything will be inter-connected, under the umbrella of the Internet of Things, where tens to hundreds of devices will be serving every single citizen. However, connecting this massive number of energy-constrained devices poses a serious challenge on the wireless networking paradigm; energy efficien...

The concept of OFS is not new and has been around since the 1960s, but OFS has made the big leap to practical implementation, only thanks to the advances in modern low-loss optical fibers, although some trails using low-loss optical fibers were shown in 1970s [1, 2]. The field of OFS owes its advancement to the progress achieved in the general fiel...

The continuous progress in electronics has led to disruptive innovations in the field of networking, towards the formation of a ubiquitous wireless network, which paved the way to the world of Internet of Things (IoT). The Internet of Things stands for a fully connected world, providing independent automated intercommunication between smart “Things...

In previous chapters, different optical sensing mechanisms have been discussed. The characteristics of the different types of OFSs have been presented and compared. Although different types and characteristics have been shown, all those sensing techniques were fabricated using silica optical fibers. In this chapter, an alternative line of optical f...

Having paved the way, this chapter discusses the use of OFSs in IoT. The current chapter introduces the concept of IoT, highlighting the factors and motivation pushing towards a more connected world; hence the so-called Internet of Things (IoT) and in the more extreme scenario the Internet of Everything (IoE). To begin, the term “Internet of Things...

Since the Nobel Prize award in 2009, received by Prof. Charles K. Kao, for his research and pioneering achievements regarding the transmission of light in an optical fiber, optical fiber has been regarded as one of the top inventions of the last decades revolutionizing not only telecommunications systems, but also new fields of applications such as...

The demonstrated advantages of optical fiber sensing systems over other sensing technologies increased the demand for these sensing mechanisms [1]. According to an ElectroniCast market forecast study on Optical Fiber Sensor (OFS) consumption, the use of optical fiber sensors generated revenue of $2.79 Billion in 2015 and it is forecasted that durin...

In an era of unprecedented progress in technology and increase in population age, continuous and close monitoring of elder citizens and patients is becoming more of a necessity than a luxury. Contributing toward this field and enhancing the life quality of elder citizens and patients with disabilities, this work presents the design and implementati...

This brief provides a review of the evolution of optical fiber sensing solutions and related applications. Unique production methods are presented and discussed, highlighting their evolution and analyzing their complexity. Under this scope, this brief presents the existing silica optical fiber sensors and polymer optical fiber sensors solutions, co...

Cooperative communications based on data sharing and relaying have been gaining huge interest lately, due to the increase in the number of mobile devices and the advancement in their capabilities. Research on green communications, location based services and mobile social networking have fueled research on this topic. Vehicular technology have also...

Privacy-preservation is of paramount importance for the emerging Intelligent Transportation System (ITS) applications, such as traffic monitoring and road safety. These applications require regular transmission of messages among vehicles or between vehicles and back-end servers. The received messages should be authenticated so that messages from ma...

Clustering became relevant in the past as a solution for the scalability problems of ad hoc networking, but, the unsuccessful application of ad hoc solutions to real scenarios, such as the projects SURAN and PRNet, decreased the interest of research community on ad hoc communications, and subsequently, on clustering algorithms. Recently, however, c...

Although 4G networks are vastly being deployed around the world, the exponential growth of mobile traffic and the requirements of upcoming services are further pushing the limits on current mobile networks; hence, worldwide research interests have shifted toward 5G paradigm. But 5G networks are not to be deployed until 2020; hence, there is a need...

The previous chapters mainly examined methods to save energy at the mobile handset, either by using short-range cooperation between mobile terminals, or by performing smart vertical handovers between heterogeneous radio access technologies. These techniques can be beneficial to mobile systems, but they have to be performed based on informed decisio...

Applications are increasingly becoming more sophisticated and rich in content, requiring more capable devices with higher energy requirements. This provides the impetus for an overhaul of the design process to engineer future emerging handsets to include energy efficiency as an optimization metric, complementing legacy design goals that include mul...

Legacy mobile handsets already incorporate multimode features, with dual, tri and quad band functionality already the norm, and the very latest smart phone having WiFi connectivity. However, complete interoperability is still in its infancy with several hurdles still to overcome, and energy efficiency is one of them. Unless mobile handsets are smar...

Next generation handsets will need to be energy aware so as to support 5G services, that are likely to be intelligent and bandwidth hungry, as well as support multi-mode operation (LTE, LTE+, HSDPA, 3G, WiFi among others) in Heterogeneous Networking (HetNet) environment. This vision gives way to stringent design requirements on the RF system design...

Cognitive radio is envisaged as a promising solution to cope with the problem of spectrum scarcity. In cognitive radio networks, users can sense the medium and opportunistically use available frequency bands. Users can cooperate in order to increase the reliability of the sensing process, which is called cooperative spectrum sensing (CSS). However,...

Security is of paramount importance for vehicular communications to verify regular updates from authorized vehicles while detecting misleading reports from malicious or malfunctioning on board units (OBUs). This should however be provided without violating the privacy of the users. Using frequently changing pseudonyms for the vehicles is an effecti...

The first wave of 4th Generation systems is finally being deployed over Europe, providing a vehicle for broadband mobile services at any time and anywhere. However, mobile traffic is still growing and the need for more sophisticated broadband services will further push the limit on current standards to provide an even tighter integration between wi...

Next generation handsets will need to be energy aware so as to support 5G services, that are likely to be intelligent and bandwidth hungry, as well as support multi-mode operation (LTE, LTE+, HSDPA, 3G, WiFi among others) in Heterogeneous Networking (HetNet) environment. This vision gives way to stringent design requirements on the RF system design...

Legacy mobile handsets already incorporate multimode features, with dual, tri and quad band functionality already the norm, and the very latest smart phone having WiFi connectivity. However, complete interoperability is still in its infancy with several hurdles still to overcome, and energy efficiency is one of them. Unless mobile handsets are smar...

Clustering has been recently suggested in VANETs to support privacy preserving systems and to provide LTE scalability. First, cluster formation has been suggested to share traffic using short range communication links, aggregate this traffic in one vehicle, and to relay this aggregated traffic hiding the transmitters identities. Second, teaming up...

The first wave of 4th Generation systems is finally being deployed over Europe, providing a vehicle for broadband mobile services at anytime, anyplace and anywhere. However, mobile traffic is still growing (Cisco in Visual Networking Index: Global Mobile Data Traffic Forecast Update 2012–2017, [1]) and the need for more sophisticated broadband serv...