Why to select different sub carrier spacings (pros and cons)?

5G NR
1

Hello Experts.

For 5G NR, there are different sub carrier spacings available.

Why to select one vs another, and the associated pros and cons?

NR_Numerology_SubCarrierSpacing_38_211_v17_6_0_01
NR_Numerology_SubCarrierSpacing_38_211_v17_6_0_01772×691 69.7 KB

Source: Numerology - Subcarrier Spacing

2

Generally, higher SCS will lead to lower latency, because the higher you subcarrier in the frequency domain, the shorter he is in time domain. So if your goal is to achieve low latency, you should transmit (and recieve) at higher SCS.
Obviously, your BW depends on the SCS. So if your device can’t support high BW, you wiil select lower SCS.