More flexibility in radio spectrum

More flexibility in radio spectrum

The terrestrial broadcast networks are a fairly static affair, it will be scheduled once, and then hardly changed. But after more and are more Internet-enabled television sets in homes, the weighting of the transmission shifts more towards the broadband networks. A first step, to carry the development into account, the DVB is a hybrid broadband broadcast TV (HbbTV) is gone, the link to a broadcast program with additional information from the organizer of the Web, or vice versa pops up a running program in the considered site.


Prof. Dr.-Ing. Ulrich Reimers
 ifn.ing.tu-bs.de At the International Conference on Intelligence in Next Generation Networks (ICIN 2011) in Berlin drew Professor Ulrich Reimers, Director of the Institute for Telecommunications (Neurobiology) at the TU Braunschweig and Technical Director of the DVB consortium, now "Dynamic broadcasting" the next step to the fore. According to this approach would limit the terrestrial broadcasting on the mass market at the same sought-after shows and the less popular programs - the "Long Tail" - distributed over broadband networks.

"The mobile networks will be flooded with videos," said Reimers. The Cisco Virtual Networking Index (VNI) predicted that by 2015 accounted for two thirds of the total traffic in the wireless networks on video. With this development, the mobile bump up against limits, both in terms of its rising energy demand and the "carbon footprint" in the form of carbon dioxide emissions caused by him as well as simply in terms of capacity. "LTE is wonderful, LTE-Advanced is even better, but both are networks with limited capacity," Reimers said, "the need for additional spectrum will increase."

Therefore Reimers pleaded for closer cooperation between TV broadcasters and network operators that takes advantage of both systems utilize. About a new version of DVB-H broadcasting Dynamical aims but far beyond. In the "mobile radio" much sought-after programs might already be partly saved by consumers on the disks, dynamic program guide may differ, which contents are already there and which are available on that network, the distribution channel would be chosen flexibly according to demand. For terrestrial digital radio means that, as Reimers explained, "no more fixed multiplexes," where are now the single linear broadcast channels assigned to certain broadcast channels. Could be fed to a secondary use, such as the mobile - through more flexible spectrum would be free, that - "is displayed with an appropriate signal".

Technically, the flexibility is achieved using more intelligence in the distribution, this has been already demonstrated in Neurobiology, Reimers said in his keynote address at the ICIN 2011; now it was "time for new thinking."