In telecoms, 5G is the fifth-generation technology standard for broadband cellular networks, which cellular phone operators began implementing globally in 2019. It is the intended replacement to 4G networks, which connect most existing cellphones.
What is 5G ?
5G refers to the fifth generation of mobile networks. After 1G, 2G, 3G, and 4G networks, it is a new global wireless standard. 5G enables a new type of network capable of connecting virtually everyone and everything, including machines, objects, and devices.
Higher performance and efficiency enable new user experiences and link new industries.
What technologies underpin 5G?
OFDM (Orthogonal frequency-division multiplexing) is a method of modulating a digital signal across multiple channels to reduce interference.
5G OFDM, like 4G LTE, is based on the same mobile networking principles. However, the new 5G NR air interface can further improve OFDM to provide much greater flexibility and scalability.
What are the variations between previous mobile network generations and 5G?
Previous mobile network generations include 1G, 2G, 3G, and 4G.
- 1G (first generation): 1G delivered analogue voice in the 1980s.
- 2G stands for second generation.
Early 1990s: Digital voice was introduced by 2G. (e.g. CDMA- Code Division Multiple Access).
- 3G stands for third generation.
Early 2000s: 3G enabled mobile data (e.g. CDMA2000).
- 4G LTE stands for fourth generation.
The 2010s saw the arrival of 4G LTE, ushering in the era of mobile broadband.
1G, 2G, 3G, and 4G all led to 5G, which is intended to provide greater connectivity than ever before.
What makes 5G superior to 4G?
- 5G is significantly faster than 4G;
- it has more capacity than 4G; and
- it has lower latency than 4G.
- 5G is a more capable unified platform than 4G.
- 5G makes better use of spectrum than 4G.