In 5G, is there a relationship between service type and subcarrier spacing?

5G NR
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1

Hello Experts.

In 5G, is there a relationship between service type and subcarrier spacing?

For example URLLC service has different subcarrier spacing than eMBB services or mMTC services?

2

The service is related to the slice to be used and for each slice, a preferred type of SCS to be adopted.

For eMBB, also different types of SCS to be used in case of rural or urban planning.

3

Thanks.

Could you please point to corresponding text in standard?

It would be helpful!

4

Yes, there is a relationship between service type and subcarrier spacing in 5G. Service type refers to the type of traffic or application that is being transmitted or received over the 5G network, such as voice, video, web browsing, gaming, etc.

Each service type has different requirements and characteristics, such as data rate, latency, reliability, mobility, etc. Subcarrier spacing refers to the distance between two adjacent subcarriers in the frequency domain of the 5G New Radio (5G NR) waveform.

Subcarrier spacing affects the time duration of the OFDM symbols and slots, which are the basic units of transmission and reception in 5G NR.

Subcarrier spacing also affects the channel coherence time and frequency selectivity, which are important factors for channel estimation and equalization.

The relationship between service type and subcarrier spacing is that different service types may benefit from different subcarrier spacings depending on their requirements and characteristics.

For example, service types that require low latency and high reliability, such as ultra-reliable low-latency communication (URLLC), may prefer wider subcarrier spacings (such as 60 kHz or 120 kHz) because they can reduce the symbol and slot duration and enable faster transmission and feedback.

On the other hand, service types that require high data rate and high spectral efficiency, such as enhanced mobile broadband (eMBB), may prefer narrower subcarrier spacings (such as 15 kHz or 30 kHz) because they can increase the number of subcarriers and enable higher modulation and coding schemes.

Therefore, 5G NR supports multiple subcarrier spacings to accommodate different service types and scenarios.