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With the continuing penetration of sensor devices and the development of wireless communication techniques, increasing number of applications involving context awareness in ubiquitous computing have been used in daily life. How to collect data from mobile devices at a low energy cost and to mine contextual habits of users remains a key challenge for ubiquitous computing. We proposed an efficient context-...
It is well known that the fragmentation of Android ecosystem has caused severe compatibility issues. Therefore, for Android apps, cross-platform testing (the apps must be tested on a multitude of devices and operating system versions) is particularly important to assure their quality. Although lots of cross-platform testing techniques have been proposed, there are still some limitations: 1) it is...
With the ever-increasing demand for high quality video, mobile video transmission optimization over limited wireless network capacity has been attracted extensive attention. HTTP Adaptive Bit Rate (ABR) streaming is a main solution to provide better Quality of Experience (QoE) by adapting multimedia content over wireless channels real-timely. Deployment of caching in wireless network has been considered...
With the recent proliferation of powerful mobile devices, such as smart phones and tablets, data traffic on mobile networks is growing explosively. To cope with the challenges brought by the explosive growth of mobile traffic, mobile network operators tend to deploy and operate their own content distribution system within their existing network infrastructure. In this paper, we present a novel content...
This paper describes an approach to analyze the EMI impact on the transmission distance of wireless communications. The article first simulates the ultrashort broadcast transmitter's behavior level model using ADS, then analyzes the radio's amplitude-frequency characteristics and output power in the case of frequency modulation. With the same antenna characteristics, same receiver sensitivity, and...
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