Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
Low robustness under mobility is the Achilles' heel of the emerging 60 GHz networking technology. Instead of using omni-directional antennas as in existing Wi-Fi/cellular networks, 60 GHz radios communicate via highly-directional links formed by phased-array beam-forming, so as to upgrade wireless link throughput to multi-Gbps. However, user motion causes misalignment between the Tx's and Rx's beam...
The recent proliferation of mobile devices embedded with capable sensors, provides an opportunity to the popular concept of mobile crowdsensing. By studying the correlation of crowd-sensed data in both spatial and temporal dimensions, we can get a clear understanding of the intrinsic pattern of data in mobile crowdsensing, which is the basic for further data analysis, such as data filtering, smoothing...
As video accounts for larger wireless traffic, improving users' quality of experience becomes important for network service providers. In this paper, we apply supervised machine learning technique to predict one objective QoE metric, video starvation, with the users' features, recorded at the beginning of each video session. We show that static users and adaptive streaming users have less starvation...
Recently many studies demonstrate that exploiting the Device-to-Device (D2D) content sharing in offline Mobile Social Networks (MSNs) is a promising solution to offload cellular data to local connectivities in proximity to reduce the duplicated cellular transmissions via the backbone network demanded by nearby users and hence to improve users' quality of service (QoS). However, related D2D-based social...
Businesses are interested in marketing over the mobile social network (MSN) during holiday seasons to expand their holiday sales. Understanding the “holiday syndrome” — how people behave during holidays — over the MSN is important to create a successful marketing campaign that delights customers. In this paper, we conduct an empirical measurement study of WeChat Moments (the most popular social network...
Wellness is an affective state that plays a significant role in our everyday lives, influencing our behaviour, social communication and performance, and even more. Although technological advancements are used to help our society to become more health conscious, wellness and mental health is still lacking in adequate resources, particularly among the student population. In this study, we collected...
The performance of mobile networks is significantly influenced by the mobility patterns of wireless device holders. Human mobility models, which yields synthetic trajectories with essential mobility patterns of crowd, are important for the research and development of mobile networks. However, traditional models are often perceived as not realistic for depicting urban context (such as urban hotspots...
Mobile devices are used for communication and for tasks that are sensitive and subject to tampering. Indeed, attacks can be performed on the users' devices without user awareness, this represents additional risk in mission critical scenarios, such as Public Protection and Disaster Relief (PPDR). Intrusion Detection Systems are important for scenarios where information leakage is of crucial importance,...
Information-centric networking is poised as an alternative to the address based network model, being mobility friendly and allowing for improved caching. However, VANETs, one of the biggest trends in ad-hoc networking, are defined by their peculiarities and pose additional challenges to the implementation of caching systems. The volatile nature of VANETs requires the development of specialized solutions,...
We propose a hybrid architecture to integrate RF (i.e., sub-6 GHz) and millimeter wave (mmWave) interfaces for 5G cellular systems. To alleviate the challenges associated with mmWave communications, our proposed architecture integrates the RF and mmWave interfaces for beamforming and data transfer, and exploits the spatio-temporal correlations between the interfaces. Based on extensive experimentation...
This paper proposes an inter-symbol interference (ISI) suppression scheme employing periodic signals for network MIMO-OFDM systems. Network MIMO-OFDM suffers from the ISI due to long time difference of arrival (TDOA) among the users especially in large cells. In the proposed scheme, the periodic signals generated by only the even-numbered sub-carriers is adopted for suppressing the ISI and the appropriate...
In telecommunication network systems, there are a large number of interconnected components which also contain many subcomponents. Heavy rain, thunder or other factors can cause mal-function of the components or disconnections between the components which trigger alarms. Because of the interconnection of elements, triggered alarms may propagate to other components. This creates harsh challenges to...
Rapid development has been observed in the deployment of communication technologies and the use of the Internet across the globe. Information exchange is the main aspect of use of such technologies in everyday life. Crimes associated with the misuse of information on the Internet are on the increase and are resulting in various losses. Saudi Arabia is one of the fastest developing countries in the...
In this work, we focus on how to dispatch the mobile sensor nodes to heal the existed coverage holes in hybrid wireless sensor networks containing both stationary sensor nodes and mobile sensor nodes. Based on the proposed novel confident information coverage model(CIC), we formulate and define the confident information coverage hole healing problem(CICHH).For solving the CICHH problem, we design...
User number prediction in cell phone base station is a very important problem for cell phone communication system design and base station location selection. Recent years, we have witnessed the encouraging potentials of deep neural networks for real-life applications of various domains. User number prediction, however, is still in its initial stage. In this paper, we propose a wavelet-based stacked...
The popularity of mobile devices and the opportunity to learn regardless of time and place make mobile learning an important method in lifelong learning. However, acceptance of mobile learning by learners is crucial to the success of mobile learning. The objective of this study is to investigate main determinants of mobile learning acceptance in higher education in China. Based on the unified theory...
Call detail records (CDRs) collected at telecommunication networks have been well studied to reveal human behaviors such as voice service usage, contact regularities and mobility patterns. With the advances in big data technology, carriers can now collect, store and analyze more data, such as records of user mobile web activities, at scales much larger than CDRs. In this paper, we study 14 features...
The evolving 5G standards promise green communications with enhanced data services and significant link reliability. Massive multi input multi output (MIMO) techniques are the driving force behind green communications, since they provide better energy efficiency with reduced transmit power. The massive data generated from such mobile communication systems, is a rich data source of great value. Procuring...
Because a huge number of base stations are deployed due to the recent development of mobile access services, network monitoring in mobile networks becomes more challenging. In this paper, we propose a novel change-point detection scheme to efficiently detect a time instant (change-point) when the spatial distribution of mobile terminals connecting to base stations is changed dramatically. In the proposed...
As the most abundant active transposable elements, Alu elements have 1.1 million copies and occupy 6% of the human genome. Recent evidence indicates that 22 AluY and 6 AluS subfamilies have been the most active Alu elements in recent human history, whose transposition has been implicated in several inherited human diseases and in various forms of cancer by integrating into genes; therefore, understanding...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.