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Nokia Siemens Networks has completed the world’s first multi-user field trial in an urban environment using the new Long Term Evolution (LTE) technology that offers mobile data rates up to 173 Mb/s.

In recent years the wireless industry has made a series of progressive improvements in the performance. However, end users now make increased use of mobile multimedia services and they stay online for longer periods. They therefore require faster data rates, quicker response times and longer battery life in order to enjoy the benefits of services such as voice over IP, mobile video, sharing and collaboration and rich multimedia telephony.

One year ago Nokia Siemens Networks conducted the world’s first LTE demonstration in conjunction with MIMO (Multiple Input / Multiple Output) antenna technology. In this demonstration peak data rates of 160 Mb/s were realized.

The field trial was conducted in a real urban outdoor environment with multiple users using the new 2.6 GHz spectrum. It confirms that LTE performance requirements can be met using 3GPP standardized technologies and it realized data rates of more than 100 Mb/s over distances of several hundred meters, while maintaining excellent throughput at the edge of typical urban mobile radio cells.

It also proves that LTE makes optimum use of the OFDM (orthogonal frequency-division multiplexing) and adaptive multi antenna technologies, as well as the intelligent algorithms used to schedule user traffic to the radio resources in multi-user environments. This enables substantial optimization of network capacity and, in combination with a scalable flat network architecture, this will provide substantial benefits for operators offering mobile broadband connectivity.

"As the world continues to move closer to our vision of 5 billion people connected by 2015, mobile operators will need to use all of the available spectrum with minimum network complexity and maximum cost efficiency to handle a 100 fold increase in traffic," says Stephan Scholz, CTO of Nokia Siemens Networks. "This field trial is an important initial proof of concept for LTE."

This field trial was assisted by the Heinrich Hertz Institut (HHI), a world-wide recognized expert center in the field of intelligent adaptive MIMO/Algorithms.
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