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Founded in 2005 YouTube has became the most fast growing stream service, that has a great impact on the internet traffic distribution. Thus understanding YouTube's characteristics is crucial to network providers. In this survey we are going to present the factors that impact user's satisfaction, in other meaning the impact on the Quality of experience(QoE). Furthermore we will discuss how to determine...
The high reliance on the Internet observed recently makes the quests of mobile networks capacity demand and reliability crucial in mobile networks design and management. The next generation mobile networks is anticipated to address the problem of increasing capacity demand by employing various techniques such as Massive MIMO, Heterogeneous Networks (HetNets), and millimeter wave (mm-Wave). Nevertheless,...
The goals of 5G networks — low latency, high bandwidth, and support for fast mobility — are non-trivial and they demand improvements across all involved technology fields. Researchers are therefore exploring approaches that leverage on network function virtualization and software-defined networking for meeting the demands of verticals expected to use 5G networks. One approach which appears promising...
This paper reviews the impact of the advent of 5G (fifth generation) over the architecture of the mobile networks. To do so, a methodological proposal that would allow a systematic and orderly review of a large amount of information from multiple sources and facilitate the analysis of the most important components, was necessary. In addition, three types of entities were taken into account: the Academy,...
The recent exponential growth of the Internet of Things (IoT) and its mobile devices asks for the advancement of mobile networks technology. In such direction, current and next generations of cellular and vehicular networks foresees adhoc communication. In such paradigm, as entities are constantly moving, connections between them are intermittent and of little, if none, reliability. Recent studies...
Congestion in today's mobile networks is mainly managed by end to end congestion control algorithms such as TCP. However, in spite of its many merits, TCP does not cope well with the high variability inherent to radio links and customer experience may sometimes be poor as TCP reveals unable to rapidly grasp such a fluctuating bandwidth. To remedy this problem, we introduce in this paper a new proposal...
The increasing number of mobile devices with high processing power and high-resolution screens had led to an enormous growth of mobile video traffic. Mobile network operators face the requirement to efficiently support large numbers of concurrent unicast streaming sessions. In the present work, the long-term quality of experience perceived by the user, the fairness, and the overall system efficiency...
The quality of service for an end user is defined by the quality of the network links connecting user and service provider. There are several parameters impacting network communication links, a very important one being the available end-to-end bandwidth. Bandwidth measurements in cellular wireless networks with traffic reactive nature, nomadic end users and highly dynamic shared resources is a challenging...
Users trying to access censored content may experience different results, depending on the technique adopted to enforce Internet Censorship, that in turn depends on different factors. Administrative control of the network (i.e. the entity managing network devices) is one of such factors. To the best of our knowledge, we are the first to focus on censorship detection on 3G/4G (hereafter mobile) network...
YoMoApp (YouTube Monitoring App) is an Android app to monitor mobile YouTube video streaming on both application- and network-layer. Additionally, it allows to collect subjective Quality of Experience (QoE) feedback of end users. During the development of the app, the stable versions of YoMoApp were already available in the Google Play Store, and the app was downloaded, installed, and used on many...
Mobile networks are expected to serve a wide range of verticals, however the Long Term Evolution (LTE) network is optimized for basic mobile operator services only. The network functions serving LTE networks are largely implemented as dedicated single function devices that offer poor customization options. This intrinsic inflexibility makes current LTE networks unable to meet the requirements of future...
The next generation of mobile networks has risen the expectations and has induced a whole new approach in the networking future. This study summarizes solutions, that meet all the existing requirements integrating Software Defined Network (SDN) and Network Function Virtualization (NFV) in mobile networking. The main contribution of this research activity is that it is a tool for literature reference...
Development of the Next Generation Networks is ongoing process. The research community is focused on development of 5G network that will assure advanced communication. Solutions are argued on daily basis and are expected to be finalized around 2020. In this paper, we present an advanced transport protocol, designed to assure efficient data usage in the future 5G mobile networks. This transport protocol...
Dedicated Short Range Communication is attracting a lot of interest these days due to its utility in vehicular safety applications, intelligent transportation system and infotainment applications. Such vehicular networks are characterized by the highly dynamic changes in topology, no significant power constraints and ephemeral links. Considering an interaction between the client and server nodes that...
The flow of information among people in today's world is essential. People need to exchange data, but they also need to store larger chunks of data for future retrieval. Various business schemes have grown by feeding themselves on these assumptions. Some of them provide the needed infrastructure, such as, cables or wireless base stations in case of GSM/LTE networks, while others provide complementary...
Mobile phone communication is an important part of human life. Nowadays a great variety of scientific works are dedicated to the investigation of the calls and cellular networks. Efficient analysis of such networks can be a great source of the information useful for reconstruction and simulation of social phenomena. The main goal of this work was to understand how much information can be obtained...
Virtualization and cloudification of mobile network functions (MNF) is an attractive solution for a rapid and flexible deployment of mobile networks. However, the support of MNFs in the cloud arises challenges for the efficient utilization of computational resources in datacenters (DCs) and of network resources in the communication network interconnecting the DCs. This paper envisions a unified orchestrator...
Crowdsourcing is a novel paradigm which has applications in a plethora of disciplines including software development, public administration, and communication technologies. In the field of telecommunications, crowdsourcing makes a viable addition to state of the art benchmarking methods for mobile networks, when combined with mobile sensing approaches to employ smartphones as end nodes. In this paper,...
Virtualization of network functions combined with the cloud paradigm enables the derealization of mobile network functionalities in data-centers (DC). Such virtualized mobile network functions (MNF) can be then provisioned dynamically and flexibly, leading to more scalable and cost-effective mobile services. Although advantageous, the provisioning of mobile network functions imposes a significant...
Mobile network technologies require some degree of tracking of user location, specifically user equipment tracking, as part of their fundamental mechanism of working. Without this basic function, features such as hand-over between cells would not work. Since mobile devices are typically associated with a single person, this provides a potential mechanism for user location surveillance. Network operators...
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