On Thursday, July 22, 2021, the University of Computer Science and Technology (STEKOM University) held a Viting International Lecture event in collaboration with Wuhan Polytechnic, China. In the event, a lecturer from China Ms. Wan XiaZi, PhD delivered a topic about "The Development Status and Industry Trend of 5G". The event was opened by the Chancellor of STEKOM University, and went smoothly until the end.

Wan XianZi explained in full about 5G, from background, business challenges to industry trends. The development of technology from the beginning to 5G is very rapid and adapted to the increasing and varied needs of consumers. With 5g technology, we will get a connection that is faster, stronger and with greater capacity, said Wan XianZi.

The emergence of 5G technology is expected to provide convenience to users. With 5G technology we can surf the internet 500% faster than 4G networks. The advantages of 5G Network are:

5G network advantages:

1. Much Better Transmission Speed

When compared to the technology used by LTE and WCDMA which supports frequencies up to below 6 GHz, 5G NR is able to support frequencies up to 100 GHz. Which means 5G networks deliver transmission speeds of up to 10 GB per second.

So, when compared to LTE, 5G NR also still uses OFDM (Orthogonal Frequency Division Multiplexing), but with some improvements. Flexible subcarrier spacing is one of them.

This can help 5G NR to handle different frequency spectrum and usage. With such a fast transmission, it is not surprising that 5G is seen as a very revolutionary technology in this era.

2. Wider Connection

In discussing the advantages and disadvantages of 5G networks, even though both use OFDM, 5G networks are able to offer advantages over 4G LTE. That is, the subcarrier spacing of 5G can be multiples of 15 kHz. LTE itself can only be 15 kHz.

With the convenience and flexibility it has, the use of radio frequency 5G technology is better able to adapt to various devices. Which means that 5G technology can be used on more devices.

More precisely, the capacity of this 5G network is up to 100 times larger than the previous network. This allows more people to communicate with each other at the same time.

3. Almost No Delay

5G networks don't just offer higher data transfer speeds. But this network is able to offer lower latency and higher connection density.

5G technology has a delay time of only about 4 to 5 milliseconds. In fact, it can be reduced to 1 millisecond. 10 times faster than 4G technology. This allows us to view high-resolution videos without buffering or twirling.

4. Energy Saving

Regarding the advantages and disadvantages of 5G networks, from the beginning 5G technology was designed to reduce energy consumption. Its ability to reduce energy use by 10% is done by reducing data traffic.

This super-fast data transmission speed also makes a big contribution to bringing energy-saving technology. In other words, 5G networks are greener and more data bits per kilowatt of energy than 4G networks.

Disadvantages of 5G technology:

Every technological invention in addition to providing great benefits, also saves drawbacks. This 5G technology is no exception. As the saying goes, there is no ivory that is not cracked. The disadvantages of 5G networks are:

1. Minimal Penetration

One of the drawbacks of 5G technology is that the penetration power is still very minimal or arguably low. Unlike previous technologies that can penetrate barriers such as walls and concrete.

5G technology is not good at breaking through barriers. This is because the bandwidth used in 5G technology increases, therefore the area that can be reached is reduced.

Devices that use 5G technology don't reach as far as 4G. Which will certainly affect the area that can be reached by 5G towers. So there are still areas or places that cannot use this 5G network.

2. Full Radio Frequency

Regarding the advantages and disadvantages of 5G networks, the use of radio frequencies, which are currently very dense, becomes a separate obstacle in the use of 5G technology. The radio spectrum is already full with the presence of 3G and 4G which are the ancestors of 5G.

Coupled with the presence of 5G, of course, it will be even more full. Additional 5G network frequency coverage of 6 GHz, which is already full of other signals. This density of radio frequencies can certainly cause new problems for the 5G network.

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Ratih Yuni Arman, M.Si as a representative from STEKOM University, explained the material about the 5G connection in the world of education, especially today in the State of Indonesia. During this pandemic, the educational process is very dependent on technology and will continue even after the pandemic ends. "Education must be reachable and affordable, and 5G will provide a solution to this issue of affordability," said Ratih.

Although currently, new 5G technology can be owned by several countries such as America, Europe, China and South Korea, but the development is significant for other countries who want to have this technology.