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The widespread use of heterogeneous wireless network technologies and their integration with multi-mode terminals enable users to be associated to the best available networks according to user preferences and application specific requirements. We study a user-centric quality of experience based resource allocation problem with several operators, several types of users and different classes of services...
The paper analyses the performance of wireless networks working over unlicensed frequency ranges, making use of diversity transmission systems, as an effective means to increase outdoor coverage capabilities in rural scenarios. To this purpose, a network has been designed and realized, providing coverage to a wide rural area in the hills of Piedmont, a region located in North-Western Italy. Once constructed,...
This paper is devoted to the problem of influence various factors on the rate of data transmission in Wi-Fi networks and increasing efficiency of devices in such kind of networks. For that purpose specific work of different equipment was experimentally researched. Also proper software and standards of a wireless network for providing suitable service was analyzed. In addition, the aim of this paper...
Nowadays, in wireless computing, guaranteeing a certain grade of Quality of Service (QoS) during wireless sessions is an important issue, especially when non-tolerant applications are running into the system. Mobility and channel quality often affect system performance, depending on the grade of mobility of hosts. In this paper, providing QoS to mobile hosts belonging to a certain service class (Mobility...
Low cost digital radios are sometimes proposed as an affordable tool for the realization of long distance (multikilometric - MKM) point-to-point telecommunication infrastructures in Developing Countries. To analyze the performance and the reliability of an architecture based on use of cheap wireless cards, several point-to-point links ranging from 50 up to 300 kilometers have been implemented in harsh...
The technology of Worldwide Interoperability for Microwave Access (WiMAX) is based on the IEEE 802.16 standard which enables the delivery of last mile wireless broadband access within tens of kilometers. Under a single base station, the coverage is much wider than WLAN and can reach a transmission rate of 70 Mbps. In this paper, we study the implementation of WiMAX for university campuses in the Taichung...
It is widely recognized that next generation wireless networks will integrate heterogeneous wireless technologies. Nowadays, the borders among the different wireless network technologies are quickly disappearing. UMTS and WLAN, a popular and representative interworking paradigm, provides a plethora of multimedia services to mobile users with multimode access capability. In this paper, we propose an...
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