237 research outputs found

    Providing Spontaneous WLAN Guest Access as a Mobile Value Added Service

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    In this paper we describe the design and realization of a system that allows guests to connect to a company’s internet-access channel via wireless local area network (WLAN). The core of the corporate infrastructure stays protected against unauthorized access. Although a growing number of companies provide WLAN access for their employees, guest access is rarely granted due to security concerns and substantial maintenance hurdles. Even if a network administrator might be willing to provide such access, it often would be done manually with substantial time delay. The solution we propose to solve this problem and to simplify the whole procedure is based on establishing a chain of trust. An authorized corporate user assumes the role of a host who invites and trusts his guests, thus he issues access codes together with the invitations. The system we propose is composed of two scenarios. The first scenario is called the „consultant scenario“ and uses a Spontaneous WLAN Guest Access Server (SpoGA Server). In the second scenario, the so called „congress scenario“, we describe how to support a great number of guests. Here we propose an „Extended Invitation Management System” (E– IMS) for ease of use. This system can help organizers of events not only to provide participants with wireless network access but also to support other related tasks in the preparation of larger events. The current results as described in the paper pave the way for field testing and broad enrollment. In addition some considerations on further developments are provided

    Scenario driven requirement engineering for design and deployment of mobile communication networks

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    The numbers of users and usage of mobile data service are increasing dramatically due to the introduction of smartphones and mobile broadband dongles. For the next decade the mobile broadband market is expected to grow and reach a level where the average data consumption per user is orders of magnitude greater than today. For the telecom industry it is a magnificent challenge to design and deploy these s high-capacity wireless networks taking into account limitations in cost, energy and radio spectrum. The objective of this paper is to highlight the need to consider a multitude of scenarios for the requirements, design and deployment of mobile broad band networks. The R&D has for many years been targeting high peak data rates enabled by improved spectral efficiency, adding more spectrum bands, aggregation of frequency bands and offloading to local wireless networks connected via public fixed phones or broadband. However, many of these features driving the technology development are representative for the conditions in US and Western Europe. The wireless networks also need to be designed assuming deployment in regions in the world where both the availability of spectrum as well as the penetration of fixed phones and broadband are limited. --Mobile broadband networks,cost and capacity,spectrum,deployment strategies,telecommunications,management of technology and R&D,economic development of natural resources

    Description of Implementations of the Clinical Testbed Applications [83 pages]

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    ACUTA Journal of Telecommunications in Higher Education

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    In This Issue Wireless Outlook 2012 802.11n Wireless in the Enterprise- The Next Big Change The University of Tulsa: A Wireless Campus Advertorial: Deploying Media Switching Systems for Educational lnstitutions Faster Wireless LAN Connections May Help Support Voice & Video Traffic Wireless at Syracuse Expectation Versus Experience: The Realities of Life on the Wireless Road lnstitutional Excellence Award Honorable Mention UC Mobile Interview President\u27s Message From the Executive Directo

    An Open Management and Administration Platform for IEEE 802.11 Networks

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    The deployment of Wireless Local Area Network (WLAN) has greatly increased in past years. Due to the large deployment of the WLAN, the immediate need of management platforms has been recognized, which has a significant impact on the performance of a WLAN. Although there are various vendor-specific and proprietary solutions available in the market to cope with the management of wireless LAN, they have problems in interoperability and compatibility. To address this issues, IETF has come up with the interoperability standard of management of WLANs devices, Control And Provisioning of Wireless Access Points (CAPWAP) protocol, which is still in the draft phase. Commercial implementation of this draft protocol from WLAN equipment vendors is rather expensive. Open source community, therefore, tried to provide free management solutions. An open source project called openCAPWAP was initiated. However, it lacks a graphic user interface that makes it hard to implement for novice network administrators or regular customers. Therefore, the researcher designed and developed a web interface framework that encapsulates openCAPWAP at the bottom to provide user-friendly management experience. This application platform was designed to work with any remote web server in the public domain through which it can connect to access points or access controllers through a secure shell to configure them. This open platform is purely open source-based. It is operating system independent: it can be implemented on any open source environment such as regular Linux operating system or embedded operation system small form factor single board computers. The platform was designed and tested in a laboratory environment and a remote system. This development contributes to network administration in both network planning and operational management of the WLAN networks

    Ubiquitous Computing for Remote Cardiac Patient Monitoring: A Survey

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    New wireless technologies, such as wireless LAN and sensor networks, for telecardiology purposes give new possibilities for monitoring vital parameters with wearable biomedical sensors, and give patients the freedom to be mobile and still be under continuous monitoring and thereby better quality of patient care. This paper will detail the architecture and quality-of-service (QoS) characteristics in integrated wireless telecardiology platforms. It will also discuss the current promising hardware/software platforms for wireless cardiac monitoring. The design methodology and challenges are provided for realistic implementation

    Optimal Relay Station Placement in Broadband Wireless Access Networks

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    Mobile Ad hoc Networking: Imperatives and Challenges

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    Mobile ad hoc networks (MANETs) represent complex distributed systems that comprise wireless mobile nodes that can freely and dynamically self-organize into arbitrary and temporary, "ad-hoc" network topologies, allowing people and devices to seamlessly internetwork in areas with no pre-existing communication infrastructure, e.g., disaster recovery environments. Ad hoc networking concept is not a new one, having been around in various forms for over 20 years. Traditionally, tactical networks have been the only communication networking application that followed the ad hoc paradigm. Recently, the introduction of new technologies such as the Bluetooth, IEEE 802.11 and Hyperlan are helping enable eventual commercial MANET deployments outside the military domain. These recent evolutions have been generating a renewed and growing interest in the research and development of MANET. This paper attempts to provide a comprehensive overview of this dynamic field. It first explains the important role that mobile ad hoc networks play in the evolution of future wireless technologies. Then, it reviews the latest research activities in these areas, including a summary of MANET\u27s characteristics, capabilities, applications, and design constraints. The paper concludes by presenting a set of challenges and problems requiring further research in the future

    Mobile Ethnography as an Innovative Tool for Customer Experience Research in Tourism – A Case of the Tourism Destination Upper Austria

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    Service marketing has evolved from focussing on products to services to experiences. Enterprises are nowadays competing for and looking for competitive advantages in experiences rather than customer satisfaction. Even though customer experience management is nothing new, it is a field that has evolved strongly in the last years. Especially in tourism destinations, various local tourism providers struggle with providing high service quality throughout the whole customer journey. Customer experience management has thus become an interesting approach also in tourism research. This paper applies customer experience research by using an innovative research method. Mobile ethnography as a qualitative method transfers the classic ethnographic approach by using mobile devices. Thus, the customer becomes a researcher himself and has the possibility to self-structure his or her data. Especially for tourism destinations, this method allows to “follow” the guest throughout the geographical space that he or she uses and collects data in real-time and in-situ. It therefore overcomes many of the disadvantages of both classic survey studies and ethnography. However briefing of participants and incentivising them turned out to be the main challenges in two projects carried out in the Austrian province of Upper Austria
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