5G Carrier Aggregation

Carrier Aggregation (CA) increases the bandwidth by combining several carriers. Each aggregated carrier is referred to as a Component Carrier (CC). 5G NR CA supports up to 16 contiguous and non-contiguous CCs with different numerologies in the FR1 band and in the FR2 band. A Carrier aggregation configuration includes the type of carrier aggregation (intra-band, contiguous or not or inter-band), no. of bands and the bandwidth class.

 Key Pointer

• 5G NR CA supports up to 16 contiguous and non-contiguous CCs with different numerologies
• Bandwidth Class is a Series of Alphabets, which defines the min. and max. bandwidth along with the no. of CCs
• FR1 has CA Class starting from A to O as per release 17
• FR1 bands allows total max. CA bandwidth as 400 MHz
• FR2 has CA Class starting from A to Q per release 17
• FR2 bands allows total max. CA bandwidth as 800 MHz

CA – Bandwidth Classes for FR1

CA – Bandwidth Classes for FR2

Nr channel spacing:   channel spacing (nrexplained.com)

5G NR ARFCN calculator: 5G NR ARFCN calculator | 5G-Tools.com

NR Freq-gscn Tool: NR Dimensioning Tool

Non-Contiguous Bn257[4CC]

2071675  22446   27550.560

2073341  22452   27650.520  99.96   [Cell-1 & Cell-2 Contigious]

2075009  22458   27750.600  100.08 [Cell-2 & Cell-3 non-Contigious]

2076677  22464   27850.680  100.08 [Cell-3 & Cell-4 non-Contigious]

UE-MRDC-Capability : {
measAndMobParametersMRDC {
  measAndMobParametersMRDC-FRX-Diff {
   simultaneousRxDataSSB-DiffNumerology supported
  }
},
rf-ParametersMRDC {
  supportedBandCombinationList {
   {
    bandList {
     nr : {
       bandNR 257,
       ca-BandwidthClassDL-NR g,
       ca-BandwidthClassUL-NR g
      },
     nr : {
       bandNR 257,
       ca-BandwidthClassDL-NR o,
       ca-BandwidthClassUL-NR o
      },
     nr : {
       bandNR 257,
       ca-BandwidthClassDL-NR i, //Forr 4CC DL
       ca-BandwidthClassUL-NR g
      }},