Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Flicker-free across the Internet

29.06.2006
There can be no doubt about it: Our data highways are getting crowded. In addition to e-mails, images and music files, the Internet is increasingly being called upon to transport phone calls and video movies.

"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
Further information:
http://www.fraunhofer.de/fhg/EN/press/pi/2006/06/Mediendienst62006Thema2.jsp

More articles from Information Technology:

nachricht Making Waves
29.06.2017 | Institute of Science and Technology Austria

nachricht Seeing the forest through the trees with a new LiDAR system
28.06.2017 | The Optical Society

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Making Waves

Computer scientists use wave packet theory to develop realistic, detailed water wave simulations in real time. Their results will be presented at this year’s SIGGRAPH conference.

Think about the last time you were at a lake, river, or the ocean. Remember the ripples of the water, the waves crashing against the rocks, the wake following...

Im Focus: Can we see monkeys from space? Emerging technologies to map biodiversity

An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.

Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...

Im Focus: Climate satellite: Tracking methane with robust laser technology

Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.

Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...

Im Focus: How protons move through a fuel cell

Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.

As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...

Im Focus: A unique data centre for cosmological simulations

Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.

With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Plants are networkers

19.06.2017 | Event News

Digital Survival Training for Executives

13.06.2017 | Event News

Global Learning Council Summit 2017

13.06.2017 | Event News

 
Latest News

Nanostructures taste the rainbow

29.06.2017 | Physics and Astronomy

New technique unveils 'matrix' inside tissues and tumors

29.06.2017 | Life Sciences

Cystic fibrosis alters the structure of mucus in airways

29.06.2017 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>