Mobile TV Screenings and Awards at MIPCOM 2006

Europe : The fourth-generation mobile network is called NGMN – Next Generation Mobile Network. As part of an in-house exhibition at the Siemens Forum in Munich, Siemens held a live presentation of the functionality and advantages of this network for the first time worldwide.

NGMN is the evolutionary enhancement of the UMTS mobile standard and will be on the market by 2010. The technology draws out maximum transmission capacity from existing UMTS frequencies and promises theoretical data rates of up to 100 megabit per second. “We are pioneers in the development of this technology”, says Christoph Caselitz, head of Mobile Networks at Siemens Communications. “NGMN will be based on existing infrastructures, enabling operators to introduce it quickly and cost-efficiently by 2010.” In a demonstration of the future network, Siemens simulated a complete NGMN radio network and used it to transmit live games and high-definition videos to mobile devices.

During its in-house exhibition “Mobile Network Evolution Days” at the Siemens Forum in Munich, the Siemens Communications Group was the first company in the world to hold a live presentation of the functionality of the NGMN radio network. Its advantages lie in the significantly higher transmission rates compared to the UMTS network-turbo High Speed Packet Access (HSPA). NGMN can theoretically reach up to 100 megabit per second, with more efficient spectrum utilization, a latency period up to three-times shorter and streamlined network architecture. All of this in addition to maintaining the same user mobility and network range.

For the demonstration, Siemens transmitted two high-definition HDTV videos, each with data rates of five megabit per second, to two devices via the simulated NGMN network. During the presentation, it was evident that the videos were being transmitted in a uniformly high quality independent of the user’s location in the network cell. In addition, Siemens highlighted the improved latency period with an online game, which demanded in particular an extremely low system delay along with a quick user reaction time.

The standardization board Third Generation Partnership Project (3GPP) has worked on NGMN radio network standardization since the beginning of 2005. Siemens has researched and developed the standard since then. Like the other cellular radio technologies WiMAX and Flash-OFDM, NGMN is based on OFDM. However, with NGMN, the individual frequencies are adaptively allocated. Users are assigned exactly those frequencies which are best for them. Moreover, network resources are reallocated in time intervals as small as 0.5 milliseconds – i.e. 2000 times per second – which dramatically improves delay performance compared to other OFDM systems.

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