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General packet radio service (GPRS) is a packet oriented mobile data service on the 2G and 3G cellular communication systems global system for mobile communications (GSM). GPRS is the most widely used technology solutions to solve mobile communication combined with IP. Due to its advantage such as real-time online, binding billing, quick login, high-speed transmission, widespread coverage etc, it...
As more network-capable devices are developed, it becomes easier for us to remain connected to our friends, colleagues, and even our homes. Unfortunately, it becomes easier for unintended third parties to remain connected to us as well. The impact of this has been limited by our proximity to the third party (i.e. the same local area network) -- until now. The Internet Protocol version 6 (IPv6) includes...
This paper designs a wireless power meter system based on GSM network; the main communication way is GPRS and secondary SMS. The user can choose the different transfer modules based on different demands and can choose the Local network, dial network, ISDN, ADSL to connect into network. It accomplishes the hardware and software design in GSM network collector and the meter system software.
The traditional monitoring mode can't meet existing security requirements, so an effective monitoring method is needed to ensure that important equipments and peripheral situation in distribution network are visualization and control ability. This paper introduced a new system based on embedded system, video compression and 3G network, which can transport video image to remote monitoring center and...
The paper reviews the characteristics of geological disasters in Three Gorges reservoir area and the bandwidth of the communication lines, as well as the functions and the effects of emergency rescue system. The thesis briefly describes the target and content of the monitoring and prediction of the emergent geological disasters commanding platform, and also gives the data flow analysis of its subsystems...
Because of recent advances in both client devices and wireless communications, industry has started to look at the potentially relevant market of Location Based Services (LBSs). IP Multimedia Subsystem (IMS) and IMS-based presence service are putting together and standardizing the needed support for location data dissemination in industry-level LBS applications. However, the deployment of presence-based...
The co-existence of heterogeneous access technologies with largely different characteristics results in handoff asymmetry. As the convergence of dissimilar networks has been envisioned to characterize the next generation wireless networks, the seamless and efficient handoff between different access technologies (vertical handoff) has become essential. As the "best" network has to be chosen,...
With the rapid development of the mobile communication technology, multimedia transmission over mobile network has become a hotspot in the monitoring area. We propose an application of the embedded Linux system and CDMA1X wireless data transmission technology in the video surveillance system. It is also a general model of wireless video capture and transmission based on embedded Linux and CDMA1X network...
Video-streaming can now be offered on third-generation (3G) mobile networks. Most research efforts have focused on video download. This paper presents a detailed study of challenges faced for successfully deploying applications requiring life video upload. Both subjective and objective qualities as well as the effects of mobility are analyzed on real 3G networks. Consequently, video profiles are identified...
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