Third-generation cellular systems will provide wide coverage and nearly universal roaming, but will not realistically live up to the bit rate expectations placed on them. On the other hand, WLAN systems already offer bit rates surpassing those of 3G systems, but are often found lacking with respect to roaming and mobility support. In short, WLAN systems are great for hot spot coverage, while 3G...

The evolution and successful deployment of wireless LANs (WLANs) worldwide has yielded a demand to integrate them with third generation (3G) mobile networks. The key goal of this integration is to develop heterogeneous mobile data networks, named as beyond 3G (B3G) networks, capable of supporting ubiquitous computing. Currently, the network architecture (3rd Generation Partnership Project [3GPP...

As the rapid growth of economy and population, the wild animals’ habitat is badly damaged by the development and utilization of wild animals living environment by people. To carry out the research on wildlife monitoring technology is of great significance. Along with the advent of the era of 3G, 3G transmission technology is more and more advanced, and the Android operating system is currently ...

With the explosion of technology development, information appliance (IA) and digital devices (DD) become more and more popular these years. And the development of the third generation (3G) mobile phone is viewed as the most potential profitable product in the next decade. However, 3G mobile phone is confronting its promotion bottleneck. By using diffusion of innovation and lifestyle theory, hen...

Assuming the use of GSM/UMTS co-sitting for initial 3G network deployment, real data extracted from the GSM network can be used to optimise 3G planning and RRM issues. It has been developed a 3G planning simulation tool which instead of using theoretical models, benefits from the availability of realistic propagation, mobility, as well as spatial and temporal traffic distributions. The tool is ...

Media streaming is a popular application demanding high data rates and hard delay constraints. These requirements raise great challenges in the wireless environment, where signal fading, noise interference and network congestion introduce data losses or corruptions. Today, the availability of the Third Generation (3G) wireless system and the Wireless Local Area Network (WLAN) provides a broader...

By creating a single market and introducing competition and the de facto global standard, GSM, the European Union (EU) achieved economies of scale and has been the world's leader in the mobile communications sector. A number of interrelated issues surrounding the third-generation (3G) system have recently become visible, however. The first indication is the high 3G spectrum license prices mobil...

Real-time video capture and communication is expected to be an important function in many urban sensor networks composed of camera-equipped mobile phones. In this paper, we present AnySense, a network architecture that supports video communication between 3G phones and Internet hosts in urban sensing applications. AnySense implements transcoding of video streams between the Internet and circuit...