What is 5G? - 3GPP

What is 5G?


Introduction to 5G

5G - The newest mobile communication technology standard defined by 3GPP, started in year 2017. 5G specification is part of 3GPP release 15 and beyond.

Many people are saying, 5G will increase the throughput, decrease the latency, error rate etc. But as I see, it will enable whole bunch of new possibilities. The 5G network will not only be use for our mobile for call to our friends, watching video and playing online games, but it will also connect these tiny smart devices, sensors, vehicles, medical surgeries, almost all kind of IoT controlled devices and so on...

In the last few decades the throughput and use cases of mobile network has evolved extensively.. starting from 2G to 3G, LTE and now 5G. 5G promises to gives Giga bits of throughput, while currently we are waiting to see 1 Gbps of speed by 4G network in real time. Few places it says it will have 10 Gbps of throughput, 1 ms of latency. We will read and get references as we progress in our next posts.

5G logo




There are lots of group who are researching on 5G mobile networks like METIS, 5G-PPP, EMPhAtiC, 5GIC, NEWCOM, 5Gforum etc. You can read the white papers of these research group for in depth understanding of their work.

The way I understand any network architecture is that, I start from phy (not how does it works, but how much does it need to transmit data and how does it possible. I might be contradicting myself here.. :) ). So, for 5G, as the data rate would be higher than 4G, so we need additional bandwidth, i.e we need additional spectrum or radio channel to transmit more data.

It is believed that 5G will have a new radio architecture to tranmit data and achieve its goal for High throughput and low latency, So the term coined "New Radio (NR)". This is what I am able to relate. There is no any official reason for giving the name NR.

As per my initial view of MAC spec, I found tramit power controlled RNTIs, Zero Power CSI-RS, aperiodic CSI etc. Whereas NAS specs has given the provision to indicate 2^64 kbps of bitrates (Do not get mislead by this. Obviously, 5G is not going to provide this much throughput, it's just the provision which is provided for next gen networks).

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