K.Ntoutsos-Oikonomou, D.Sapikas, N.Vasileiadis, D. Pantelis. Athens Wireless Network Analysis ( 2015 - Research Poster) (original) (raw)
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Mobile and Wireless Communications
2006
The mobile information society has revolutionised the way we work, communicate and socialise. Mobile phones, wireless free communication and associated technologies such as WANs, LANs, and PANs, cellular networks, SMS, 3G, Bluetooth, Blackberry and WiFi are seen as the driving force of the advanced society. The roots of today's explosion in wireless technology can be traced back to the deregulation of AT&T in the US and the Post Office and British Telecom in the UK, as well as Nokia's groundbreaking approach to the design and marketing of the mobile phone.Providing a succinct introduction to the field of mobile and wireless communications, this book: begins with the basics of radio technology and offers an overview of key scientific terms and concepts for the student reader; addresses the social and economic implications of mobile and wireless technologies, such as the effects of the deregulation of telephone systems Uses a range of case studies and examples of mobile and ...
Wireless Networks - Telecommunications' New Age
2004
The members of the Editorial Team of UPGRADE announce the inauguration of a new section called MOSAIC, and the issues that will be covered in the monographs of year 2004. Joint issue with N OVÁTICA * 3 Presentation Wireless Access: Towards Integrated Mobile Communications-Vicente Casares-Giner and Jordi Domingo-Pascual In their presentation the guest editors introduce the monograph, giving a brief historic outline of Telecommunications and explaining the present situation of Wireless Access technologies, where four families coexist: Cellular Systems, Cordless Systems, Wireless Local Area Networks (WLAN) and Satellite Systems. As usual, a list of Useful References is also included for those interested in knowing more about this subject.
Escola Tecnica Superior D'Enginyeria De Telecomunicació De Barcelona
tdr.cesca.es
August 2008. The thesis has been done as part of a larger project, which concentrates on mobile environment PeerHood. I want to thank my supervisor for the thesis, Professor Jari Porras, for supporting during my thesis and for giving me valuable insight into PeerHood peer-to-peer networking, and into its potential applications in mobile networks. I specially would like to thank Arto Hämäläinen, who has been the instructor for my thesis and lead for the PeerHood protocol design. Arto gave many ideas for my thesis and was a great teacher in many occasions. My gratitude also goes to Teemu Reisbacka and Bishal, who have been working with me in the same department, and giving good ideas for my thesis. I want to thank Teemu for his invaluable help during the writing process. Finally, I would like to thank my family and my girlfriend Laura for supporting me during all my studies.
New Media & Society, 2022
Wi-Fi is an integral and invaluable part of our media practices. Wireless networks are blended into our media environment and, in terms of infrastructural importance, have become comparable with electricity or water. This article offers a new transnational perspective on the underexplored history of IEEE 802.11 standards by focusing on the tensions between the United States and Europe in terms of development trajectories of wireless technology. The goal is to analyze the standardization of wireless networking through a transnational lens and to contribute to enhanced understanding of the global proliferation of Wi-Fi technology. Four particular aspects of the transnational development of Wi-Fi technology are discussed: the rivalry between US and European standards, the constitutive choice to focus on data transmission, radio spectrum availability, and the peculiarities of network authentication.
Use of Mobile Networks for the Purpose of Protecting Persons and Property
CBU International Conference Proceedings, 2019
Mobile networks have been around us for decades, and life without them is difficult to reconstruct. Their gradual evolution has varied over time, depending on the requirements of their users. Originally, they were used only for the transmission of telephony, but transmission in the speech band today is mainly used for data transmission and telephony is in moderate attenuation. Various types of data can be transmitted via mobile networks due to their size or importance. In the area of security, mobile networks are used from two basic points of view. The first aspect is the use for communication between the components of the electrical security system and the second is the transmission of information from the monitored object to the monitoring and alarm receiving center. The aim of the paper will be to point out the composition of mobile networks focusing on the functioning of cellular systems and the course of communication between individual parts of the system. The main view will...
“Web radios in Greece. A quantitative and qualitative analysis on Greek web radios”
The development of audio broadcasting via the web is probably the biggest revolution in broadcasting since the advent of FM. An incredible variety of stations stream their audio on the Internet, from small stations to national radio, from broadcasters already known for their FM services to Internet-only stations. Additionally, numerous web radio stations have their own web sites with archives of their programs for on demand listening. Today, there are approximately 2500 Internet radio stations in Real Networks, around 3000 stations (Internet radio and television) in Windows Media and almost 3000 in SHOUTcast, according to data offered in their web sites. These numbers are growing at a rapid pace. There are several factors that contribute to this growth of web radio stations: 1. Web radio eliminates the coverage restriction found with FM radio stations. A radio station on the network can be accessed from any computer with Internet access. 2. Another factor is the ease of setting up a radio station server. Cheap hardware with Internet access along with free/ low-cost high-quality software enables any user to create his/ her own web radio station. Greece on the other hand is a technological contradiction. Despite the fact that according to several surveys Greece is rated with a low to medium rate on the implementation and incorporation of the latest technological developments, it seems that at the same time Greek people show a great interest about Internet and web radios. This paper will present the results of a quantitive and qualitive research conducted among the listeners and the administrators of the most popular web radios in Greece. It will also try to focus on the main reasons that lead Greek listeners to web radios and will try to explain the motives and the aesthetical criteria the Greek listeners and administrators of web radios use so as to rate the most popular of them.
The rise of the wireless internet
2003
The introduction of the mobile phone revolutionised the way people traditionally communicated with one another. People suddenly became accessible independent of their location, at any time of the day or week. A salesperson in business for instance, who was always on the road could now be reached and could in turn make phone calls conveniently between customer meetings. Bundled with the basic mobile voice service was messaging in the form of voice or text. The latter has especially proven to be a useful and cost-effective method for conveying a short message. Collectively residential and business mobile subscribers use the short message service (SMS) to send millions of text messages per day (each not more than 160 characters in length). Information 'push and pull' services in the form of SMS, such as the latest sports results or betting odds, are now commonplace value-added features offered by second-generation (2G) mobile service providers.
Changing Connections: Wi-Fi, Tablets and Evolving Systems of Connectivity
2016
Introduction The internet is growing. This is evident by almost any metric: the numbers of servers, data centres, cables, connection points, devices, appliances, people, locations, times and services that are connected to and through the internet have rapidly grown over the last 20 years and consequently so too has the volume of data that circulates. This has implications for energy demand. The total electricity used to manufacture and power information and communication technologies is estimated to have grown over the last decade as a proportion of total global electricity production. This trend is predicted to continue: from an estimated 10% in 2015 to around 20% of global electricity use by 2030, or 50% in a worst-case scenario (Andrae and Edler 2015). Growth in the volume of data flowing through the internet is especially significant in this. If we are to better understand the basis for such growth, it is important to consider how even lowpower and battery-operated digital devic...
Smartphones, tablets, and laptops connect users to the digital services of the Internet (email, social and locative media, etc.) while on the move: the operation of these networked devices harness always-on wireless, digital connectivity and are powered by batteries in need of regular charging. This digital overlay to everyday life cannot be separated from its underlying energy demands. Supporting ubiquitous digital communication is both the infrastructure of wireless connectivity but also the wired, global telecommunications systems of the Internet itself. These systems require not-insignificant amounts of electricity. Conceptualizing the energy demand of mobile communication begins by considering the interweaving of infrastructures with expectations of constant service pulsing through social practices of connectivity and charging. While the energy consumption of each device is low, the sheer number of devices in use aggregates higher, and ties into the energy consumption of digital systems themselves. Emerging social practices of charging smartphones in transit offer an entry-point to theorizing the energy needs surrounding information and communication technologies beyond home and workspaces, in public and in motion. The widespread adoption and constant use of smartphones signal the end-point of electricity consumption patterns as well as digital services stretching globally yet relying on locally-generated, co-produced electricity and digital infrastructures at the same time. Nested case studies of charging practices in train stations in the Northeast United States, on trains passing through these stations, and finally an examination of the electricity use of a prominent Philadelphia data center provide an overview of how the powering of smartphone batteries and the Internet represent conjoined infrastructures and, as such, frameworks for new practices to develop that create qualitatively new forms of energy demand. Introduction: Charging smartphone batteries, powering the Internet From cell phones to stem cells, stuff of all kinds increasingly makes us what we are.-Braun and Whatmore (2010, x) For many if not most people, the experience of travel goes metaphorically and literally hand-in-hand with a constant connection to a smartphone or other mobile computing device.