Scientists from the Heinrich-Hertz-Institut (HHI), the Fraunhofer Institute for Telecommunications, will present their optimized Radio Resource Managers at the GSMA Mobile World Congress to be held from February 27 to March 1, 2012 in Barelona.
HHI’s optimized Radio Resource Managers are capable of facilitating network operators to address heavy traffic issue of cellular networks. Typical Radio Resource Managers are facing problems in handling this issue due to ever-increasing usage of Internet for watching videos. Cellular networks are not able to know the size of the data volumes getting downloaded or the video stream requirements. The researchers have already developed a prototype of their optimized Radio Resource Manager solution.
According to Dr. Thomas Schierl, HHI’s Group Manager for Multimedia Communications, the researchers optimized Radio Resource Managers by coupling long term evolution (LTE), a replacement for UMTS, with dynamic adaptive streaming, a web streaming format, over HTTP or ‘DASH’ for short. One of the features of the DASH standard is its ability to produce images or video in different qualities or in different file sizes, thus allowing a user to choose various video qualities and to understand how rapidly videos are loaded or websites are launched.
HHI’s Group Manager, Thomas Wirth informed that the DASH standard will be deployed even on cellular networks at its full strength. If a user starts a video by clicking on the preview, the mobile device and the transmitting stations automatically verify reception and traffic volume on the network. If network traffic is heavy or reception is poor, then the mobile receiver device and the transmitting stations alter the video quality so that the user can now view the videos without judders but with a slightly decreased image quality.
The optimized Radio Resource Managers allow network operators to use their network cell resources effectively. Wirth explained that these saved resources can then be assigned to others, which in turn augment the number of users to be serviced.
Source: http://www.fraunhofer.de