The Federal Communications Commission (FCC) of the United States has recently completed compatibility testing of the first 5G router, which will be used by customers using the wireless Internet connection. The Samsung router with the designation SFG-D0100 will be available in the offer of the American operator Verizon. This equipment works in the 5 G mmWave 28 GHz millimetre band.
Already some time ago information appeared that the first 5G devices will not be smartphones. It is true that Samsung has already organized tests with the use of 5G tablets, and Qualcomm has built a prototype device with a mobile chip that supports 5G mmWave. However, these solutions are far from commercialization. One of the first devices that will use the new generation of cellular networks will be a Samsung router with a working name SFG-D0100. Such a designation is in the reports of the FCC, an organization that, among other things, certifies all telecommunications devices admitted for sale in the United States. The results of these tests are publicly available, so at the same time we learned what parameters have the first 5G router known to us.
Samsung Router supports 5G mmWave 28 GHz and has as many as 64 antennas
Radio waves from the 28 GHz millimetre range have the same strong propagation suppression. This means that the range of the base station is small. However, engineers working on 5G solved this problem using beamforming techniques. This means that both the base station and the client’s device can, using the antenna system, form a directional antenna radiation pattern aimed at the direction chosen by the system. The Samsung router uses for this purpose 2 antenna systems, of which each of them consists of 32 small antennas. Each of the systems radiates on a different polarity, so data transmission takes place in 2×2 MIMO mode. On the other hand, the very high frequency allows us to occupy the 800 MHz wide channel (here we aggregate 8 blocks, 100 MHz each). 64 QAM is used for data transmission, which is the same as in LTE.
The FCC organization examined the emissivity of the 5G router. This means that the above parameters apply to the uplink, i.e. the link from the user to the base station. Unfortunately, we do not know what modulation is used when downloading data. Then we could learn the theoretical maximum transmission speed. The operator who will sell this solution ensures that 5G mmWave will provide a speed of 1 Gbps for each user. Even the one that is on the edge of the base station range. However, 32 element antenna systems should create several orthogonal (i.e. non-interfering) beams aimed at different users. Thanks to this, each of them will be able to enjoy fast internet. Will 5G in such a release displace fiber optic links?