Nadine Akkari

Jeddah international college

Nano-devices communicate in the Terahertz band and achieve very high transmission bit-rates at the cost of short communication distances due to wireless channel effects. Medium Access Control (MAC) protocols are needed for the communication between nano-devices and for the access coordination to the wireless channel. Since classical MAC protocols c...

In dense indoor areas, high numbers of people use their smartphones and tablets to share or download pictures, videos, or data. The heterogeneous network (HetNet) solves the problems caused by the explosion of data generated by smartphones and tablets. Heterogeneous networks use a mix of Relay, Femtocell, Pico, and Macro base stations to improve sp...

As the number of mobile users grows rapidly, wireless access technologies are evolving to provide high data rates to mobile users and to support emerging applications involving both human and machine-type communications. In this context, 5G is considered as a solution to provide wireless users with high coverage and increased network capacity, by e...

Nodes' clustering in wireless networks is one of the solutions that used to improve network performance. This paper discusses the clustering in wireless networks. Then it presents a novel clustering algorithm named Pragmatic Genetic Algorithm (PGA). It combines two of the well known artificial intelligence techniques: K-means and Genetic algorithm....

Densification is one of the 5G networks solutions to increase data rate and network capacity. This technology aims for constructing a large number of small cells in a specific area which may include different wireless technologies (LTE, IEEE 802.11, WiMAX, etc.). Small cells provide shorter distance between the cell access point and the mobile node...

Femto Access Points (FAP) and Device-to-Device (D2D) communications have recently been considered as potential candidates for 5G network densification and cell-edge performance. Mobility and handover management is a major issue in heterogeneous networks (HetNet) offering different access technologies. Recently, many Fuzzy and Multi-Attribute Decisi...

Nowadays, the popularity of smart phones creates huge capacity requirements for networks during mass events where thousands of people coexist in specific areas. At such events, large numbers of people use their smartphones to share pictures and download information. This behavior creates traffic profiles that differ from those typically observed in...

Nowadays, the current trend is to integrate WiFi with Long Term Evolution (LTE) networks in order to meet the growing demand for huge amounts of data traffic and provide ubiquitous coverage. Seamless mobility between heterogeneous networks with the required Quality of Services (QoS) provisioning for Mobile Terminals (MTs) is one of the most challen...

Wireless Sensor Networks (WSNs) are one of the most promising solutions for smart grid applications due to advantages, such as their low-cost, different functionalities, and successful adoption to smart grid environments. However, providing quality of service (QoS) requirements of smart grid applications with WSNs is difficult because of the power...

Abstract—Nanotechnology is enabling the development of miniature devices able to perform simple tasks at the nanoscale. The interconnection of such nano-devices with traditional wire- less networks and ultimately the Internet enables a new network- ing paradigm known as the Internet of Nano-Things (IoNT). De- spite their promising applications, nan...

With the increasing demand on data rate in 5G mobile networks, the deployment of small cells such as Femto Access Points (FAP) and device-device (D2D) communications in parallel with macro-cells have been adopted as key technologies for improving spectral efficiency to support the vision of 1000x capacity in 5G systems. One major challenge in the f...

Nano-devices communicating in the Terahertz band can achieve very high transmission bit-rates at the cost of short communication distances due to wireless channel effects. Medium Access Control (MAC) protocols are needed for the communication between nano-devices and for the access coordination to the wireless channel. Since classical MAC protocols...

The number of cluster heads (CH) has significant effects on the way in which the network performs, the connectivity it achieves, and the constricting cost. Hence, the selection of a suitable number of cluster head nodes represents a form of an optimization problem. The cross-layer optimization technique is considered in this paper, to select the be...

Finding the shortest path between two points on Earth is important especially in navigation. Since the Earth does not exactly follow one of the geometric shapes, calculating the distance on its surface is one of the important challenges. Haversine and Vincenty formulas are the two major formulas used for calculating distances on a sphere and ellipt...

The traditional power grid in many countries suffers from high maintenance costs and scalability issues along with the huge expense of building new power stations, and lack of efficient system monitoring that could increase the overall performance by acting proactively in preventing potential failures. To address these problems, a next-generation e...

The traditional power grid in many countries suffers from high maintenance costs and scalability issues along with the huge expense of building new power stations, and lack of efficient system monitoring that could increase the overall performance by acting proactively in preventing potential failures. To address these problems, a next-generation e...

Nanonetworks consist of nano-sized communicating devices which are able to perform simple tasks at the nanoscale. The limited capabilities of individual nanomachines and the Terahertz (THz) band channel behavior lead to error-prone wireless links. In this paper, a cross-layer analysis of error-control strategies for nanonetworks in the THz band is...

With the increasing number of smart devices and handheld computers, mobile users should be provided with always-on connectivity. Many research works have addressed the problem of providing mobile users with a seamless handover to avoid losing connectivity while moving to uncovered areas or gaps among WiFi access points (AP). The criteria of choosin...

Today, wireless networks have become more important due to the widespread use of smartphones. To achieve Always Best Connectivity (ABC), mobile nodes should handover to a new point of attachment to maintain connection. IEEE802.21 is a protocol used to unify the handover process independently of the network types involved. The newly deployed IEEE802...

With advances in technology, network operators may need to set up a Dynamic Spectrum Access (DSA) overlay in Heterogeneous Networks (HetNets) to increase network coverage, spectrum efficiency, and the capacity of these networks. Uses of TV White Space (TVWS) and Long Term Evolution (LTE) are the combination of a new research direction to meet the i...

Adaptive open learning technology provides adaptive methods of interacting with the technology used in open learning. Since most of online learning systems are computer-based, adapting the keyboard for people with special needs will be of great effectiveness. This article presents an adaptive keyboard technology based on Morse code that will enable...

In large open dense areas, high numbers of people use their smart phones to share pictures or data and download other information. This behavior creates traffic profiles that differ from those typically seen in the traditional network in less dense areas where less uplink traffic and less frequent packet transmission will be experienced. Thus plann...

—Tethering has been recently proposed as an efficient solution for the increase in number of mobile users and the requested bandwidth in cellular networks. The idea is to group the mobile nodes into clusters, each containing slaves served by a hotspot. To save licensed spectrum, the hotspot-slave link can use other frequency channels like the newly...

To enable seamless handovers for broadband networks, many researchers have addressed the integration of heterogeneous access technologies to provide users with always-on connectivity. Currently, there are several researches reported in the literature that discuss the integration of beyond 3G networks such as 3GPP Long Term Evolution LTE and mobile...

Wireless NanoSensor Networks (WNSNs) will allow novel intelligent nanomaterial-based sensors, or nanosensors, to detect new types of events at the nanoscale in a distributed fashion over extended areas. Two main characteristics are expected to guide the design of WNSNs architectures and protocols, namely, their Terahertz Band wireless communication...

As next generation networks are evolving toward providing the mobile users with higher bandwidth and better Quality of Service, relaying was considered as a solution that will contribute to a better service provisioning to the end users. In a recent paper, grouping the mobile nodes into clusters was proposed as an alternative solution to relaying....

To extend and improve the cell coverage, an efficient solution is to place several relay antennas in the cell. Several protocols for relay selection were proposed in the past years. However, the asynchronism between the received signals due to the different locations of the relays was not addressed. In this paper, we propose to select the relays ba...

As wireless access networks are being developed to provide the users with always-on connectivity and better QoS, many papers have addressed the issue of providing service adaptation for the multimedia application in the case of vertical handovers VHO. Thus providing service continuity while roaming among different wireless access networks is one of...

As wireless access networks are being developed to provide the users with always-on connectivity and better QoS, many papers have addressed the issue of providing service adaptation for the multimedia application in the case of vertical handovers. Thus providing service continuity while roaming among different wireless access networks is one of the...

Over the past few years, Next Generation Networks (NGN) is perceived as a platform that will bring both application developers and mobile operators togather to develop applications with enhanced quality of experience. IP Multimedia Subsystem (IMS) is considered to be one of the important features in Mobile Next Generation Networks (MNGN). In our wo...

As wireless access technologies grow rapidly, the recent studies have focused on granting mobile users the ability of roaming across different wireless networks in a seamless manner thus offering seamless mobility. The different characteristics of each wireless technology with regard to Quality of Service (QoS) brought many challenges for provision...

Nowadays, the current trend is to integrate mobile WiMAX with 3G networks to meet the growing demand for high-speed connectivity and ubiquitous coverage. The design and implementation of seamless integration architecture for heterogeneous networks is a challenging task, as it requires comprehensive effort to provide mobile user with seamless experi...

IP Multimedia Subsystem (IMS) is considered to be one of the important features in Mobile Next Generation Networks (MNGN). It adds value to the mobile services and applications by integrating mobile network resources, such as location, billing and authentication. This is achieved by enabling a third party access to network resources. In previous wo...

Over the past few years, mobile operators are faced with enormous challenges. Of such challenges, evolved user demands on personalized applications. Telecommunications industry as well as research community have paid enormous attention to Next Generation Networks (NGN) to address this challenge. NGN is perceived as a sophisticated platform where bo...

The vision of next generation wireless network (NGWN) is to integrate different wireless access technologies, each with its own characteristics, into a common IP-based core network to provide mobile user with service continuity and seamless roaming. One of the major issues for the converged heterogeneous networks is providing a seamless vertical ha...

As wireless access technologies grow rapidly, the recent studies have focused on granting mobile users the ability of roaming across different wireless networks in a seamless manner thus offering seamless mobility. The different characteristics of each wireless technology with regards to QoS brought many challenges for provisioning the continuous s...

Over the past few years, mobile operators are faced with enormous challenges. Of such challenges, evolved user demands on personalized applications. Telecommunications industry as well as research community have paid enormous attention to Next Generation Networks (NGN) to address this challenge. NGN is perceived as a sophisticated platform where bo...

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This paper describes a new vision for mobility management in next generation all IP networks. We evaluate the vertical-to-horizontal handover in the proposed integration architecture for the third generation wireless communication (3G) from one side and WLAN 802.11 from the other side. In this architecture, the inter-domain management IDM module in...

This paper describes an anticipated mobility between the two access technologies WLAN and UMTS considered as complementary technologies for next generation networks integration. We propose to apply anticipated vertical handover (AVHO) in the integration of the third generation wireless communication (3G) from one side and WLAN 802.11 from the other...

This paper describes a new architecture for mobility management in next generation networks. The proposed architecture aims to offer mobile users, roaming in next generation networks service continuity without QoS degradation. This is based on the proposed Inter-Domain Management module IDM responsible of guiding the vertical handover to WiMax netw...

The vision of next generation networks is an all-IP network supporting heterogeneous access technologies such as WLAN, UMTS and WiMax for the purpose of providing the mobile user with roaming capability across different networks. To enable this type of mobility known as vertical handover (HO), a special mobility management is proposed in order for...

Les réseaux de la nouvelle génération (Next Generation Networks) sont basés sur l'intégration des différentes technologies d'accès. Pour garantir la QoS et la mobilité transparente d'un terminal se déplaçant d'une technologie d'accès à une autre, une gestion spéciale de mobilité et de QoS est nécessaire. Dans ce contexte, nous présentons les différ...

paper describes a new vision for mobility management in next generation all IP networks. We propose a new integration architecture for the third generation wireless communication (3G) from one side and WLAN 802.11 from the other side. The proposed architecture offers mobile users, roaming in the next generation networks, service continuity without...