Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


Three generations of optic Internet


Professor Mikel Izal from the Public University of Navarre, Basque Country, has analysed the problems to integrate new optic networks in actual network and transfer level (TCP/IP) Internet protocols. This integration will enable to create the core of the second Internet generation in future, the so called Internet 2.

In that area, technological innovations are created everyday and the thesis has been focused on the burst switching networks corresponding to the second optic Internet generation.

Nowadays new optic technologies are based on wavelength division multiplexing. That way, several channels are transferred in a single optic fibre by using different wavelength carriers. Those optic technologies are divided into three generations. The first generation is based on wavelength division multiplexing (WDM). Here it is possible to create high capacity link networks between actual IP routers. The second one offers the possibility to make some operations of direct switching via optic technology. That way, the core of the network may offer optic channels, named Ligthpaths, or it can switch data in large packages, named burst switching networks.

Finally, the third generation would make all steps of channelling and processing of data-packages in the optic level, obtaining a complete optic switching of packages. At the present, the first generation is being implanted, as there are just experimental prototypes or architecture proposals for the second and third generations.

Problems with protocols

One of the theoretical advantage of optic Internet networks would be a faster data-transfer. However, if data is transferred in small packages, even if new networks have more transfer capacity and bandwidth, the network will be slow. In fact, the current problems of transfer time are based on protocols that were designed to have a secure network. Therefore, in order to make better use of speed capacity, data packages must be handled in larger packages.

In order to achieve that result, fractal traffic patterns or autosimilar patterns have been used. In new network architectures, the services of Internet protocols have been analysed, analytic expressions have been obtained and finally, simulations of such networks have been made to estimate the results.

Similarly, to offer the services Internet nowadays has the most effective protocols to be used in the second and third generations have been studied. In those studies the same result has been obtained: actual protocols would reduce significantly the speed in second and third generation networks. Therefore, it would be better to use protocols that have less interaction, but send larger data packages.

Finally, professor Izal has studied Internet traffic in a burst switching system. According to that research, it can be said that Internet and telephone traffic are not the same. The latter is stable in a certain scale, but Internet traffic is more difficult to predict. Therefore, the characteristics of burst traffic have been analysed and, as a consequence, the size and number of bursts have been grouped in a pattern. Indeed, that pattern could be useful for the design of optic switching of core of the network.

Garazi Andonegi | alfa
Further information:

More articles from Information Technology:

nachricht Green Light for Galaxy Europe
15.03.2018 | Albert-Ludwigs-Universität Freiburg im Breisgau

nachricht Tokyo Tech's six-legged robots get closer to nature
12.03.2018 | Tokyo Institute of Technology

All articles from Information Technology >>>

The most recent press releases about innovation >>>

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

Im Focus: Locomotion control with photopigments

Researchers from Göttingen University discover additional function of opsins

Animal photoreceptors capture light with photopigments. Researchers from the University of Göttingen have now discovered that these photopigments fulfill an...

Im Focus: Surveying the Arctic: Tracking down carbon particles

Researchers embark on aerial campaign over Northeast Greenland

On 15 March, the AWI research aeroplane Polar 5 will depart for Greenland. Concentrating on the furthest northeast region of the island, an international team...

Im Focus: Unique Insights into the Antarctic Ice Shelf System

Data collected on ocean-ice interactions in the little-researched regions of the far south

The world’s second-largest ice shelf was the destination for a Polarstern expedition that ended in Punta Arenas, Chile on 14th March 2018. Oceanographers from...

Im Focus: ILA 2018: Laser alternative to hexavalent chromium coating

At the 2018 ILA Berlin Air Show from April 25–29, the Fraunhofer Institute for Laser Technology ILT is showcasing extreme high-speed Laser Material Deposition (EHLA): A video documents how for metal components that are highly loaded, EHLA has already proved itself as an alternative to hard chrome plating, which is now allowed only under special conditions.

When the EU restricted the use of hexavalent chromium compounds to special applications requiring authorization, the move prompted a rethink in the surface...

Im Focus: Radar for navigation support from autonomous flying drones

At the ILA Berlin, hall 4, booth 202, Fraunhofer FHR will present two radar sensors for navigation support of drones. The sensors are valuable components in the implementation of autonomous flying drones: they function as obstacle detectors to prevent collisions. Radar sensors also operate reliably in restricted visibility, e.g. in foggy or dusty conditions. Due to their ability to measure distances with high precision, the radar sensors can also be used as altimeters when other sources of information such as barometers or GPS are not available or cannot operate optimally.

Drones play an increasingly important role in the area of logistics and services. Well-known logistic companies place great hope in these compact, aerial...

All Focus news of the innovation-report >>>



Industry & Economy
Event News

Ultrafast Wireless and Chip Design at the DATE Conference in Dresden

16.03.2018 | Event News

International Tinnitus Conference of the Tinnitus Research Initiative in Regensburg

13.03.2018 | Event News

International Virtual Reality Conference “IEEE VR 2018” comes to Reutlingen, Germany

08.03.2018 | Event News

Latest News

Wandering greenhouse gas

16.03.2018 | Earth Sciences

'Frequency combs' ID chemicals within the mid-infrared spectral region

16.03.2018 | Physics and Astronomy

Biologists unravel another mystery of what makes DNA go 'loopy'

16.03.2018 | Life Sciences

Science & Research
Overview of more VideoLinks >>>