configuration is limited to four bands. The inter-band configuration is not standardized in Release R.16 for the FR2 band. 5.2.1. Carrier aggregation in the FR1 band 5.2.1.1. Carrier aggregation class In the FR1 band, for Release 16, the categories of radio bandwidth classes are defined in Table 5.1. 146 NG-RAN and 5G-NR The maximum transmission band configuration is defined for each CC (Component Carrier) aggregate radio channel. Class A corresponds to a 5G-NR configuration without carrier aggregation. The maximum 5G carrier band (BW Channel, max) depends on the band number and the numerology. Numerology defines the frequency spacing SCS between sub-carrier (Sub Carrier Spacing). Class A belongs to all the fallback groups and allows the mobile to return to a basic configuration without aggregation of carriers. Class B corresponds to a total bandwidth between 20 MHz and 100 MHz by the aggregation of two radio channels. Class C corresponds to a total bandwidth between 100 MHz and 200 MHz from the aggregation of two radio channels. Class D corresponds to a total bandwidth between 200 MHz and 300 MHz from the aggregation of three radio channels. Class E corresponds to a total bandwidth between 300 MHz and 400 MHz from the aggregation of four radio channels. Classes C, D and E belong to the same Fallback Group 1 fallback group. Class G corresponds to a total bandwidth between 100 MHz and 150 MHz from the aggregation of three radio channels. Class H corresponds to a total bandwidth between 150 MHz and 200 MHz from the aggregation of four radio channels. Class I corresponds to a total bandwidth between 200 MHz and 250 MHz from the aggregation of five radio channels. Class J corresponds to a total bandwidth between 250 MHz and 300 MHz from the aggregation of six radio channels. Class K corresponds to a total bandwidth between 300 MHz and 350 MHz from the aggregation of seven radio channels. Class L corresponds to a total bandwidth between 350 MHz and 400 MHz from the aggregation of eight radio channels. Classes G to L b