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The current ever-growing advances in wireless networking and the great success of mobile computing have contributed to the development of an increasing amount of mobile services. Due to this growth of published services, quality of service (QoS) is becoming a key feature to provide the most appropriate needed service to mobile clients according to their requirements. However, managing QoS represents...
Many industrial and medical scenarios today are building on mobile devices as their end systems. These devices are typically connected to backend systems via the mobile phone network with their corresponding data services. Today's network protocols are optimized for reliable transfer of voice traffic, however, available bandwidth and latency for data traffic may vary significantly with location and...
Mobile devices like PDAs or mobile phones have become widespread. Similarly network functionality like GSM, Bluetooth or WLAN has become a standard. Nevertheless, not many applications take mobility into account. An application and its communication component are tightly coupled and the application assumes that network behavior does not change. Here in this paper we propose a new lightweight architecture...
Current advances in portable devices, wireless technologies have created a mobile computing environment which is characterized by a large scale of dynamism. But mobile computing is quite different from traditional middleware while addressing the dynamic and pervasive aspects of mobile systems. This paper represents the experience of our project related to next generation middleware systems, with high...
Internet Relay Chat (IRC) is a critical application in military networks for maintaining situational awareness and conducting battle management at all echelons. But these networks are often subject to frequent disconnections, limited bandwidth, and long delays, especially when using satellite services and field radios. Such conditions are inhospitable to TCP, and thus the standard IRC protocol, which...
In recent years, integrating SIP with OSGi has become one of the important research topics in the communication between mobile and networked home devices. In this paper, the general architecture for combining OSGi and SIP is investigated and implementation issues with the communication middleware are discussed. The encapsulation of OSGi devices with SIP has been realized by the concept of "SIP...
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