Interest in broadband wireless access (BWA) has been growing due to increased user mobility and the need for data at all times. IEEE 802.16e based WiMAX networks promise best available quality of experience mobile service users. Unlike LANs, incorporate several (QoS) mechanisms Media Access Control (MAC) level guaranteed services data, voice video. The problem assuring QoS is basically that how allocate resources among users order meet criteria such as delay, delay jitter throughput...

We present a simple analytical method for capacity evaluation of IEEE 802.16e Mobile WiMAX networks. Various overheads that impact the are explained and methods to reduce these also presented. The advantage model is effect each decision sensitivity various parameters can be seen easily. illustrate by estimating three sample applications—Mobile TV, VoIP, data. analysis process helps explain features WiMAX. It shown proper use overhead reducing mechanisms scheduling make an order magnitude...

Recently, Hypertext Transfer Protocol (HTTP)-based adaptive streaming has become the de facto standard for video over Internet. It allows clients to dynamically adapt media characteristics varying network conditions ensure a high quality of experience (QoE)—that is, minimize playback interruptions while maximizing at reasonable level changes. In case live streaming, this task becomes particularly challenging due latency constraints. The challenge further increases if client uses wireless...

Mobile WiMAX systems based on the IEEE 802.16e standard require all downlink allocations to be mapped a rectangular region in two dimensional subcarrier-time map. Many published resource allocation schemes ignore this requirement. It is possible that when regions may exceed capacity of frame, and QoS some flows violated. The rectangle mapping problem variation bin or strip packing problem, which known NP-complete. In previous paper, an algorithm called OCSA (One Column Striping with...

WiMAX has attracted a lot of attention recently in the telecommunication community including researchers, product developers, and service providers. Numerous papers have been published on various design issues networks. Since being discussed are usually ahead availability, most these studies require simulation. It is important to some common features among models so that their results can be compared. Therefore, Application Working Group Forum developed standard simulation methodology...

Generally, indoor navigation is considered as a challenging task, especially when people navigate through an unfamiliar place (e.g. university or mall). It even more endeavor for the visually impaired and blind community. This paper presents innovative approach to precise challenge individuals using multi-tier solution with help of intuitive smartphone interface. We utilize set different communication technologies (WiFi, Bluetooth radio-frequency identification) users reach object high...

The key to proper resource allocation for mobile video on wireless networks is have a good model the demands. In this paper, we present results of analysis number streams and show that simple seasonal ARIMA (SAM) can provide very representation both MPEG4-Part2 MPEG4-Part10 videos, formats are commonly used videos. has been implemented frame RTP packet generators. be represent different movies easily adjusted produce workloads simulation studies. We use SAM generator compare performance...

The mobile WiMax system is based on IEEE 802.16e, which defines radio interface supporting several classes of Internet Protocol applications and services. While the being deployed, 802.16m TG developing an amendment to 802.16e greatly improve performance, it focusing not only PHY MAC performance but also a level end-to-end improvement that includes scope network application embrace strong market request interest. To evaluate capacity all aspects evaluation - from air link are required. For...

With the current level of ubiquity social media websites, obtaining users preferences automatically became a crucial task to assess their tendencies and behaviors online. Arabic language as one most spoken languages in world fastest growing on Internet motivates us provide reliable automated tools that can perform sentiment analysis reveal opinions. In this paper, we present our work comments classification based collected manually annotated YouTube comments. We share results utilizing...

The Perceptual Evaluation of Audio Quality (PEAQ) is a standard ITU algorithm that widely used in audio quality evaluation. This reported to be accurate for high signal with low impairments are caused by lossy compression associated codecs. In this paper, we experimentally and quantitatively show PEAQ fails drastically under very small imperceptible frames' losses streaming applications over networks or due recording processing errors, which make it not preferable evaluation tool these applications.

Churn prediction represents one of the most important components Customer Relationship Management (CRM). In purpose retaining customers and maintaining their satisfaction, researchers many fields including business intelligence, marketing information technology were motivated to investigate best methods that deliver services for customers. Many machine learning algorithms had been implemented in optimally predicting possible churning making right decisions at moments. Researchers conducted...

Most of IEEE 802.16e resource allocation proposals only focus on how to allocate the resources meet QoS parameters such as throughput, delay, and delay-jitter. As described in standard, mapping from into downlink subframe for each burst needs be a rectangular shape. The problem is variation bin or strip packing problem, which known NP complete. However, decision made within few milliseconds Mobile WiMAX frame. In this paper, we introduce heuristic algorithm, called One Column Striping with...

Active Learning explores the use of minimal human intervention to improve efficiency supervised machine learning algorithms during learning/training phase. improves performance, especially for ambiguous or unknown cases that are not clearly defined in classification criteria applied data. In learning, quality used data greatly determines task outcomes. Especially with current abundance resources, labeling process represents a major hurdle classification. this paper, we share our results...

There are enormous numbers of applications that require the use tracking algorithms to predict future states a system according its previous accumulated states. Thus, many efficient techniques widely adopted estimate at every point in time get desired performance levels. Kalman filter is popular and an method for online estimations linear measurements. Extended Filter (EKF), on other hand, more suited nonlinear However, EKF algorithm well known be computationally intensive, may not achieve...

In wireless networks, the definition of fair resource allocation is ambiguous because channel condition not constant over time and location. Two main ways to define are: by number allocated service units per user, temporal fairness, or transmitted bytes throughput fairness. broadband networks i.e., IEEE 802.16e Mobile WiMAX, quality services level offered providers associated with price paid. Similar a traditional cellular phone system, users may be required pay air-time charges. The...

Most of the IEEE 802.16e Mobile WiMAX scheduling proposals for real-time traffic using Unsolicited Grant Service (UGS) focus on throughput and guaranteed latency. The delay variation or jitter effect burst overhead have not yet been investigated. This paper introduces a new technique called Swapping Min-Max (SWIM) UGS that only meets constraint with optimal throughput, but also minimizes overhead.

We propose a simple model that is capable of capturing the statistical characteristics mobile video traces encoded using MPEG4-Part2, AVC and SVC-TS encoding standards. The can be adjusted to adapt diverse workload configurations, which gives fellow researchers great flexibility evaluate different network traffic scenarios. also discuss model-based trace generator challenges its implementation. Moreover, we present simulation results validating settings. In addition that, provide several...

In this paper, we introduce an innovative way to model and predict high-definition (HD) video traces encoded with H.264/AVC encoding standard. Our results are based on comparing over 50 HD traces. We show through our that model: simplified seasonal ARIMA (SAM) provides a good representation for videos, it significant improvements in prediction accuracy other regressions methods. addition, discuss methodology collect encode library of describe the tools have created used generating create...

<span lang="EN-US">The cloud computing model offers a shared pool of resources and services with diverse models presented to the clients through internet by an on-demand scalable dynamic pay-per-use model. The developers have identified need for automated system (cloud service broker (CSB)) that can contribute exploiting capability, enhancing its functionality, improving performance. This research presents congestion management (DCM) which manage massive amount requests while...

In this paper, we propose a new dynamic resource allocation (DRA) scheme to support the constantly increasing online video stream traffic, especially high definition (HD) streams. Our DRA is based on traffic prediction using seasonal time analysis. seeks provide accurate prediction, minimize negotiation frequency, and increase utilization of network resources while meeting maximum delay requirements. We validate our approach various traces, including collection more than 50 HD traces. show...

This study focuses on the challenges encountered in online cybersecurity education. It adopts an exploratory research design using a mixed-methods approach to investigate perceptions and experiences of postgraduate students enrolled program. The collection data is structured into two distinct phases. In initial phase, qualitative insights are gathered through workshops with industry experts, followed by administering questionnaire delve deeper students’ challenges. Thematic analysis...