SK Telecom, Korean vendors develop relay capabilities for 5G networks

Friday 1 December 2017 | 07:10 CET | News
South Korean operator SK Telecom has announced it has developed relay capabilities for 5G networks after a 6-month collaboration with local partners. These partners include High Gain Antenna and SK Telecom’s subsidiary SK Telesys. According to SK Telecom, the new relay capabilities are designed to enable network operators to stabilize communications services even in the ultra-high frequency bands of 5G networks, and have been successfully applied to a trial network. 

The new 5G relay services jointly developed by SK Telecom and local partners can be classified into three techniques: the flat framing, in which radio waves are reflected at right angles towards both sides; the convex mirroring, in which radio waves are reflected outwards as if they hit a convex mirror; and the multi-beam generation and amplification, in which a multiple number of radio waves are aggregated and amplified. 

Among the techniques, SK Telecom applied the multi-beam generation and amplification technique to its 5G trial network in Gangnam, Korea only to achieve three times wider coverage than that of a single beam. While the existing single beam relay repeater covers 70 meters in diagram, the company reports it is now able to extend the coverage to 200 meters in diagram with a new relay repeater implementing the multi-beam generation and amplification technique. 

SK Telecom has already proven wider coverage in its 5G trial networks in Gangnam and Bundang, Korea by applying a new relay repeater which can cover both indoor and outdoor environments. 

High Gain Antenna developed technologies to implement the flat framing and convex mirroring techniques, while SK Telesys realized the concept of multi-beam generation and amplification. SK Telecom has worked with the two vendors for the past six months and demonstrated these techniques in its 5G trial networks in the company’s Bundang office and two dense urban areas in Seoul.

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