Q. What kinds of technology is Samsung using in its 5G trials and what are the challenges the trials are designed to explore?
A. One of the core focuses of our early 5G trials has been the delivery of high throughput and high capacity connectivity over relatively dense footprints. Today’s LTE networks generally communicate using radio frequencies between 600 and 2600 MHz, which has now become a very crowded space. In order to meet the goals of our 5G vision, Samsung has been exploring the usage of ultra-high frequency spectrum, commonly called millimeter waves (or mmWave). There are extremely large portions of this spectrum that are unused or under-used – easily five to ten times more than the total amount available for LTE.
Until a few years ago, millimeter waves were a large unknown for the industry. They have a unique set of characteristics and challenges. For example, mmWaves have a more difficult time penetrating solid objects and are much more easily absorbed in the air when compared to the lower LTE frequencies. Because of this, the potential of mobile communications at these high frequencies has been at the core of our research and development over the past four years, and is now playing a significant role in our 5G field trials.
Adaptive beamforming is one of the technologies designed to overcome the challenges at high frequencies. Beamforming works by tightly focusing the radio waves into individual beams that are targeted independently at each device. A combination of small antenna arrays and advanced signal processing makes this possible, enabling high quality signals and incredible data throughputs.