Samsung Electronics and SK Telecom, South Korean mobile operator, has formed an agreement for research and development on 5G Wireless data transmission which will transmit at 7.55Gbps in October last year. The two companies are planning to do a demo of the progress of their development at the Mobile World Congress expo in Barcelona which will begins on Monday. Mobile World Congress is the biggest event for wireless telecommunication technology which is held annually.
The data transmission will be using millimeter wave frequency which transmits over 6GHz which higher than the current mobile phone and Wi-Fi frequency. One of the advantage is the high speed whereas the disadvantage include poor propagation. Millimeter wave frequency is currently used in the direct-to-home satellite TV systems. This system requires an unobstructed transmission path to transmit data. Therefore, normally there is a dish installed together with the system that needs a clear view of satellite in the sky. It transmits millimeter waves at around 11GHz. Therefore, when used for mobile phone, it will require the same concept, which means walls, windows and other objects can easily interfere or even cut off the data communications.
To address this issue, the two companies are experimenting with a technique called “3D beamforming”. It is a technique whereby the system able to sense the location of a smartphone and directing a narrow pencil-like transmission beam towards it. A cellular base station will then transmits signals over a wide area, but with more intelligent antenna systems in 5G wireless that could change.
Millimeter wave frequency bands are used to help alleviate crowding in lower frequencies, therefore, it is seen as the better ways to serve users in crowded cities for cellular carriers and equipment makers. On top of that, millimeter waves are easily impaired by objects, therefore, the same frequencies can be reused in areas close to each other, most probably in narrow location, without fear of interference. All this aspects will lead to more efficient use of spectrum.
The two companies are planning to implement this technology in South Korea in 2020.