"Triple play" is the magic word: the parallel transmission of information, voice and video images in real time. At present, though, network operators are finding it hard to cope with the rising data stream. Customers with a DSL connection expect high-speed delivery of data at all times despite the growing volume of information – but there is no guarantee that they will get it. At peak traffic times, the data stream slows down and data may even be lost on the way. This type of failure severely impairs Internet telephony, as the words get chopped up and are inclined to echo. When videos are played back in real time, a time delay causes the picture to jerk. It is therefore essential to have a guaranteed data transmission rate for future multimedia applications.
Scientists from the Munich-based Fraunhofer Institute for Communication Systems ESK and the University of Paderborn are among the participants in a collaborative project with Infineon Technologies dubbed "NGN PlaNetS", which has been set up to investigate the use of Ethernet on the Internet. This technology has been established in private and corporate networks for a long time – and it is cheaper than expanding network capacity, too. "Ethernet has the advantage of being used already in more than 95 percent of home and company networks. That makes it easier to combine it with the Internet," explains ESK scientist Dietmar Tölle. The researchers have meanwhile demonstrated in a laboratory that Ethernet is indeed able to handle triple-play services.
The Ethernet solution enables data streams to be delivered without difficulty at the same time as videos and telephone calls. The system is flexible enough to bypass overloaded sections of the data path via alternative routes. The ESK has developed procedures for monitoring all current data streams and re-routing them where there is a risk of congestion. The industrial partners in the NGN-PlaNetS project are testing these procedures in prototypes for the next generation of Internet.
Monika Weiner | alfa
Stanford researchers create new special-purpose computer that may someday save us billions
21.10.2016 | Stanford University
New 3-D wiring technique brings scalable quantum computers closer to reality
19.10.2016 | University of Waterloo
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.
In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...
'Ferroelectric' materials can switch between different states of electrical polarization in response to an external electric field. This flexibility means they show promise for many applications, for example in electronic devices and computer memory. Current ferroelectric materials are highly valued for their thermal and chemical stability and rapid electro-mechanical responses, but creating a material that is scalable down to the tiny sizes needed for technologies like silicon-based semiconductors (Si-based CMOS) has proven challenging.
Now, Hiroshi Funakubo and co-workers at the Tokyo Institute of Technology, in collaboration with researchers across Japan, have conducted experiments to...
14.10.2016 | Event News
14.10.2016 | Event News
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21.10.2016 | Information Technology
21.10.2016 | Materials Sciences