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In recent years, the ever-growing number of mobile users and demands for mobile services exert great pressure on wireless content transmission. It is still a challenge to provide high-quality service in mobile scenario. To improve the quality of mobile service, proactive caching is proposed to push popular and requested service content to the nearest base stations or access points from mobile users...
Mobile Ad-hoc Networks (MANETs) are one possible solution for infrastructure-independent communication in disaster scenarios. In such scenarios, communication is essential to coordinate first responders and safe lives. But mobile nodes in large areas face several challenges related to connectivity, resulting in frequent partitions and intermittent connections. Protocols as well as network access technologies...
Although the computational power of mobile devices has been increasing, it is still not enough for some classes of applications. In the present, these applications delegate the computing power burden on servers located on the Internet. This model assumes an always-on Internet connectivity and implies a non-negligible latency. The thesis addresses the challenges and contributions posed to the application...
Recent distributed computing technologies are primarily oriented towards availability and reliability in the versatile environments. For data availability, replication is widely used in distributed environments to reduce the access cost and improve the overall performance. This paper addresses the one of the main issues in maintaining consistency in replica management particularly; effective local...
With the wide adoption of radio frequency identification (RFID) system, one of important issues is the anti-collision problem. This means that the reader should be identified all tags within the same range, efficiently, fast. Generally, the tree-based protocols should make the unique ID from the request from the reader and the response from tags. In the result, the traditional methods need the number...
The seamless combining with context-aware sensors and numerous devices and e-home server will soon become a part of our home environment in the near future. We name it as a context-aware home based on ubiquitous computing concept. This context-aware home reduces participations of users in order to realize a ubiquitous computing and automates various services. Therefore, the risk of privacy violation...
The increased availability of mobile broadband connec- tions enables the expansion of software downloads to mobile devices. This leads to greater number of available services and a better utilisation of the computational power of mobile devices. The downside of this increased software availability is an increase in the possible attack vectors. One scenario is the misuse of resources, for example,...
The increasing ubiquity of mobile embedded systems has been matched by the evolution of a variety of wireless network standards and technologies. The major constraints of wireless embedded systems are limitations of communication bandwidth, processing capabilities, and battery power. Remote wireless embedded systems often act as sensors, which provide data to a certain community. The exchange of data...
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