Aymen Mohammed Khodayer Al-Dulaimi - Academia.edu (original) (raw)

Papers by Aymen Mohammed Khodayer Al-Dulaimi

In the paper, the QoE-centric adaptive multipath routing tensor model aimed at provisioning the R... more In the paper, the QoE-centric adaptive multipath routing tensor model aimed at provisioning the R-factor in software-defined networks has been presented. The flow-based routing model that is the base of the proposed approach takes into account possible packet losses caused by congestion of network elements and includes the conditions for realizing a multipath routing strategy, flow conservation, and link overload prevention. A tensor network description has been applied in order to construct the analytical form of conditions for ensuring the Quality of Experience in terms of the R-factor, as well as the expressions for calculating the average end-to-end delay and the probability of packet loss. Finally, the technological problem of adaptive routing has been reduced to solving the optimization problem of nonlinear programming that made it possible to ensure the adaptability feature of routing solutions when an increase in QoE requirements caused an increase in network resources needed. Using the proposed model is characterized by the load balancing within the multipath obtained for the network. As a result, a numerical study on a network fragment has been demonstrated, which is confirmed the proposed model adequacy and effectiveness in terms of load balancing in a case of increasing the network load.

This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY

Based on the detected disadvantages of the known mechanisms of the frequency resources scheduling... more Based on the detected disadvantages of the known mechanisms of the frequency resources scheduling in the downward channel the mathematical model introduced by a number of linear and nonlinear conditions-limitations is offered. The novelty of this model consists in the statement of the subchannels scheduling task as the tasks of rescheduling of the accessible capacity of the downward channel of the WiMAX technology for the information transmission in the direction of users stations, taking into account their territorial remoteness (type of the system of modulation and coding).

the aim of this paper is to Personalized Quality of Experience (QOE) Management using Data driven... more the aim of this paper is to Personalized Quality of Experience (QOE) Management using Data driven Architecture in 5G Wireless Networks that consume less resources. The proposed research will be the part of the overall research project, which focuses on addressing a problem that many organizations experience that introduce an Enterprise Architecture to support the integration of different services across the enterprise. With the rapid growth in mobile network usage and video streaming being the most popular service, Quality of Experience of video in mobile networks is of extreme importance to both service providers and their customers. The ability to effectively predict Quality of Experience of video is key for QoE adaptation and higher levels of customer satisfaction. In this work machine learning algorithms were used to create models that predict QoE with network QoS parameters, including wireless-specific and 5Gspecific parameters. An 5G simulation that reflects the current mobile traffic landscape was created to obtain the data set for training. An objective tool for video QoE evaluation was used to gather QoE data necessary to train the prediction models. Support Vector Machines, Random Forest, Gradient Boosted Trees and Neural Networks were chosen as the machine learning algorithms for Quality of Experience prediction, and it was shown that they achieve high accuracy. Influence of wireless-specific parameters on QoE prediction was also investigated, and it was discovered that they are suitable for use in Quality of Experience prediction models.The problem is that; organizations do not know where they either have or may encounter weaknesses in their Enterprise Architecture with Data Driven Architecture (DDA). The framework presented is based on concepts from Wireless Networks with Driven Architecture will be designed to support both Transitional Gap Analysis (TGA) and Comparative Gap Analysis (CGA). TGA is supported by comparing a baseline Data Driven Architecture (DDA) to a target QoE where both DDA have been defined from the management perspective. DDA is facilitated by mapping a QoE to two or more 5G networks. The research methodology used in the paper is design science research for the QoE management based 5G network. The QOE for implementation of 5th generation network and apply it in many different real-world organizations. The goal of the paper is to present a framework in the form an implementation and management model, called QOE, that visualizes the gaps (weaknesses) in proposed or existing enterprise architectures and to support a comparative analysis process for different a5Grnative solution approaches. a set of requirements on the QOE management can be presented and the frameworks are applied on Matlab for implementation.

2021 IEEE 8th International Conference on Problems of Infocommunications, Science and Technology (PIC S&T)

2015 International Conference on Antenna Theory and Techniques (ICATT), 2015

Based on the laws of the known mechanisms of the frequency resources scheduling in the download c... more Based on the laws of the known mechanisms of the frequency resources scheduling in the download channel, solution of the problem raised in this paper assures QoS by available resources which directly influent on quality of design of the equipment. The WiMAX resource allocation algorithms determine which users to schedule, how to allocate subcarriers to them, and how to determine the appropriate power levels for each user on each subcarrier. We present a brief survey of recent scheduling research. The goals of scheduling are to achieve the optimal usage of resources, to assure the QoS. The mathematical model introduced by a number of linear and nonlinear conditions-limitations is analyzed in this research, Therefore, a model is proposed that consists in the statement of the sub-channels scheduling problem. This model gives solutions of problems of rescheduling of the accessible capacity of the download channel of the WiMAX technology for the information transmission in the direction of users stations, taking into account their territorial remoteness.

2015 International Conference on Antenna Theory and Techniques (ICATT), 2015

The results of development of a mathematical model for time-frequency resource allocation in the ... more The results of development of a mathematical model for time-frequency resource allocation in the LTE technology downlink using Resource Allocation Type 1 are given. Using the proposed model allows taking into account the technological features of the LTE downlink (splitting the resource blocks into subsets, allocation of RB of only one subset to user equipment), as well as territorial remoteness of user equipment (type of modulation system and coding). During the analysis it was found that use of the proposed model is aimed at providing each user equipment with quality of service according to the bandwidth in the downlink with the possibility of access to additional (unguaranteed) bandwidth. The analysis of the proposed model for time-frequency resource allocation in the LTE technology from the viewpoint of providing the required bandwidths for user equipment in the downlink was conducted.

2014 24th International Crimean Conference Microwave & Telecommunication Technology, 2014

A method is proposed to meet the requirements of the transmission rate in a downlink of WiMAX. Th... more A method is proposed to meet the requirements of the transmission rate in a downlink of WiMAX. The novelty of the method is to formulate the problem as a problem of subchannel allocation redistribution of the available bandwidth for the transmission of downlink information in the direction of subscriber stations (SS) with their spatial remoteness registered (type of modulation and coding scheme), and the required transmission rate.

2022 IEEE 16th International Conference on Advanced Trends in Radioelectronics, Telecommunications and Computer Engineering (TCSET), Feb 22, 2022

International Journal of Computing, Mar 30, 2021

This paper discusses wireless traffic consisting of various types of data packets. Regardless of ... more This paper discusses wireless traffic consisting of various types of data packets. Regardless of the type of data being sent and received, the transmission can suffer from latency problems. The wireless multimedia standard enables the service provider to prioritize voice, video, best-effort, and background data by adding differentiated services code point value to the internet protocol header. This effectively allows network users to benefit from optimal network performance while using various applications with different latency and throughput requirements. In this paper, we conducted a study of five use-cases over two common wireless standards, IEEE 802.11n and IEEE 802.11ac. The study was carried out by prioritizing, respectively, voice, video data packets, with lowest priority assigned to best-effort data packets. The best-effort traffic can have more bandwidth than the voice or video. Under each use case, we evaluated the impact of additional network load on video streaming.

2022 International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT), Oct 20, 2022

In this paper proposed realization of resource blocks allocation in LTE downlink in the form of n... more In this paper proposed realization of resource blocks allocation in LTE downlink in the form of nonlinear optimization. In using improved model it is possible to avoid the control variables Boolean nature, which has a positive impact on the computational complexity of final technological solutions for resource allocation. Problem of RAT 1 was reduced to the problem solution of nonlinear optimization. In solving this problem minimized both the number of resource blocks used, and downlink bandwidth.

2022 IEEE 9th International Conference on Problems of Infocommunications, Science and Technology (PIC S&T)

2022 International Conference on Communications, Information, Electronic and Energy Systems (CIEES)

Background. The number of IoT devices is increasing every year. At the same time, the number of d... more Background. The number of IoT devices is increasing every year. At the same time, the number of data transmitted by these systems over networks is growing. Smart devices do not need a powerful processor, and the amount of memory is usually measured in kilobytes, so antivirus software and firewalls are not installed on such devices. Cybercriminals are increasingly exploiting the vulnerabilities of such home networks for the purpose of extortion or simply hooliganism. There is a securityproblem in the Internet of things networks that needs to be solved.Objective. The aim of the article is to identify the main causes of vulnerabilities in smart home systems and networks and to offer protection.Methods. As methods, we consider the most common attacks on smart home systemsResults. The main security features on the Internet of things are timely software updates, changing default settings, multifactor authentication, encrypting traffic on your home network, installing a firewall on your ho...

Sensors

The purpose of this paper is to provide a high-level overview of the most important non-orthogona... more The purpose of this paper is to provide a high-level overview of the most important non-orthogonal multiple access (NOMA) protocols in 5G and 6G networks that incorporate code division within the context of 3GPP standardization. The article’s objective is also to look into and compare the various strategies that have been proposed as a solution to the issue of resource distribution to achieve high performance. Many different NOMA plans for 5G and 6G systems have been suggested by a multitude of businesses. NOMA is currently developing in two primary directions: one of them is with power division, and the other is with code division. During the process of standardization carried out by the 3GPP, the attention of the developers was concentrated in the second direction for the application of NOMA schemes in 5G and 6G systems. Hardware communication, also known as D2D communication, performs a significant role in the process of communication between devices. This will increase the effic...

2022 2nd International Conference on Computing and Machine Intelligence (ICMI)

Issues related to improving the design of multiservice SOA networks are discussed. Issue of creat... more Issues related to improving the design of multiservice SOA networks are discussed. Issue of creation of complex services, their orchestration and choreography are considered. Problem arising when creating an integrated service is discussed. It is shown that the formal description of the service using temporal logics will perform rigorous verification service and eliminate design errors.Обговорюються питання, пов'язані з удосконаленням конструкції мультисервісної SOA мережи. Розглядуються питання про створення комплексних послуг, їх інструментування та хореографії. Обговорюється проблема, що виникає при створенні інтегрованих послуг. Показано, що формальний опис послуги за допомогою тимчасових логік буде виконувати сувору послугу перевірки та усунення помилок проектування

Problemi telekomunìkacìj, Dec 11, 2018

A research on the previously proposed method for allocation of time-frequency resource of the LTE... more A research on the previously proposed method for allocation of time-frequency resource of the LTE downlink has been conducted. The method is based on the solution of the optimization problem on the allocation of resource blocks in the downlink LTE technology, which corresponds to the RAT 1 scheme. The advantage of the method is that the allocation of resource blocks of the downlink LTE is carried out in a balanced manner taking into account the signal-interference environment, type and level of bandwidth requirements. The results of the comparative analysis confirmed the effectiveness of this method. A number of numerical examples have shown that using the method allows to increase the bandwidth of the LTE network from 16-20% to 33-47% compared to the known solutions presented by the Max C/I Ratio, Round Robin and Proportional Fair algorithms. The article offers recommendations for the practical implementation of the proposed solution and presents a variant of the multi-level functional architecture for the block of allocation of the time-frequency resource of the downlink LTE network.

2021 IEEE 8th International Conference on Problems of Infocommunications, Science and Technology (PIC S&T)

2015 International Conference on Antenna Theory and Techniques (ICATT), 2015

2014 24th International Crimean Conference Microwave & Telecommunication Technology, 2014

2022 IEEE 16th International Conference on Advanced Trends in Radioelectronics, Telecommunications and Computer Engineering (TCSET), Feb 22, 2022

International Journal of Computing, Mar 30, 2021

2022 International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT), Oct 20, 2022

2022 IEEE 9th International Conference on Problems of Infocommunications, Science and Technology (PIC S&T)

2022 International Conference on Communications, Information, Electronic and Energy Systems (CIEES)

Sensors

2022 2nd International Conference on Computing and Machine Intelligence (ICMI)

Problemi telekomunìkacìj, Dec 11, 2018