Numerology – Subcarrier Spacing
- As we know in LTE we have only one type of subcarrier spacing i.e 15Khz.
- NR support multiple type of subcarrier spacing .
- NR supports a flexible OFDM numerology with subcarrier spacings ranges from 15 kHz to 240 kHz with a proportional change in cyclic prefix duration.
Below diagram will be showing subcarrier mapping based on numerology
Supported Channel mapping with numerology
- Its Not like that every numerology can be used for every physical channel.
- Numerologies has been specified as per certain type of physical channel.
Numerology, Radio Frame Structure and Slot Length
- Slot Length changes depending on numerology.
- Increase in subcarrier spacing will decrease slot length.
- Symbol per slot will same based on slot configuration like for configuration 0 number of symbols for a slot is 14 and for configuration 1 it will be 7.
Numerology, Radio Frame Structure and Slot Length
Radio Frame Structure based on different numerology
